CN114803522A - Pilot-operated type low-pressure energy-saving embolism conveying system - Google Patents
Pilot-operated type low-pressure energy-saving embolism conveying system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
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Abstract
本发明公开了一种先导式低压节能栓塞输送系统,涉及输送系统技术领域,包括:料位信号获取模块:用于获取料位信号,并根据料位信号进行装料;满仓信号获取模块;气压获取与调节模块:用于获取仓泵气压数据并调节仓泵气压,压力达到栓塞系统启动气压时,自动启动栓塞系统;先导式系统触发模块;堵塞定位模块;栓塞阀启动模块;本发明是在总结多种输送系统的基础上进行技术探索、研究,技术革新,实现了在低压、恒压状态下能够顺利输送并无堵管现象,从而大大减少了耗气量,充分达到了节能效果,也降低了磨损,并且在保留了原来新型栓塞技术所有功能的同时,还具备了先导功能。真正实现了低压、低磨损、超低耗能,同时实现永不堵管。
The invention discloses a pilot-type low-pressure energy-saving plug conveying system, which relates to the technical field of conveying systems and includes: a material level signal acquisition module: used for acquiring material level signals, and charging according to the material level signals; a full warehouse signal acquisition module; Acquisition and adjustment module: used to acquire the air pressure data of the silo pump and adjust the air pressure of the silo pump. When the pressure reaches the starting air pressure of the embolization system, the embolization system is automatically started; the pilot system triggering module; the blockage positioning module; the plug valve starting module; On the basis of summarizing various conveying systems, technical exploration, research, and technological innovation have been carried out to achieve smooth conveyance under low pressure and constant pressure without pipe blockage, thus greatly reducing air consumption, fully achieving energy-saving effects, and reducing wear and tear and retain all the features of the original new embolization technology, while also having a pilot function. It truly realizes low pressure, low wear and ultra-low energy consumption, and at the same time, it can never block the pipe.
Description
技术领域technical field
本发明涉及输送系统技术领域,尤其涉及一种先导式低压节能栓塞输送系统。The invention relates to the technical field of conveying systems, in particular to a pilot-type low-pressure energy-saving embolism conveying system.
背景技术Background technique
气力输送是清洁生产的一个重要环节,它是利用空气(或者其它气体)流作为输送动力,在管道中进行搬运粉粒状固体物料。物料在管道中的流动状态很复杂,根据物料在管道中的固气比都密相输送系统。气力输送系统广泛应用于石油,化工,冶金,建材,粮油,制药等工厂的一些原料,粉粒料的输送。气力输送系统可输送的散料有颜料,染料,涂料,炭黑,钛白粉,氧化铁,陶瓷粉,重钙,轻钙,膨润土,分子筛,高岭土,硅胶粉,活性炭,尿素,氯化铵,碳酸氢铵,苏打粉,固体农药,钨粉,农药助剂,铜精矿粉,煤粉,磷矿粉,氧化铝粉,水泥,陶土,黄沙,石英沙,粘土粉,硅石,石灰石粉,白云石粉,木屑粉,玻璃纤维,二氧化硅,滑石粉,面粉,淀粉,谷物,奶粉,食品添加剂等。Pneumatic conveying is an important part of cleaner production. It uses air (or other gas) flow as conveying power to carry powder and granular solid materials in pipelines. The flow state of the material in the pipeline is very complex, and the dense phase conveying system is based on the solid-gas ratio of the material in the pipeline. Pneumatic conveying system is widely used in the conveying of some raw materials and powders in petroleum, chemical, metallurgy, building materials, grain and oil, pharmaceutical and other factories. The bulk materials that can be conveyed by the pneumatic conveying system are pigments, dyes, coatings, carbon black, titanium dioxide, iron oxide, ceramic powder, heavy calcium, light calcium, bentonite, molecular sieve, kaolin, silica powder, activated carbon, urea, ammonium chloride, Ammonium bicarbonate, soda powder, solid pesticide, tungsten powder, pesticide adjuvant, copper concentrate powder, coal powder, phosphate rock powder, alumina powder, cement, clay, yellow sand, quartz sand, clay powder, silica, limestone powder , Dolomite powder, sawdust powder, glass fiber, silicon dioxide, talc, flour, starch, cereals, milk powder, food additives, etc.
现有的输送系统,在使用时,无法做到智能感知输灰管道内的压力,当达到设定值时可以智能开启、关闭,无须程序控制,每个先导式自动成栓阀都可以自主工作,无法实现了在低压、恒压状态下能够顺利输送并无堵管现象,从而大大减少了耗气量,充分达到了节能效果,也降低了磨损的问题,为此我们提出一种先导式低压节能栓塞输送系统来解决上述问题。The existing conveying system cannot intelligently sense the pressure in the ash conveying pipeline when it is in use. When the set value is reached, it can be opened and closed intelligently, without program control, and each pilot-type automatic throttling valve can work independently , it is impossible to achieve smooth transportation under low pressure and constant pressure without blocking the pipe, thus greatly reducing the gas consumption, fully achieving the energy saving effect, and reducing the problem of wear and tear. For this reason, we propose a pilot type low pressure energy saving. Embolism delivery system to solve the above problems.
发明内容SUMMARY OF THE INVENTION
本发明的目的是为了解决现有技术中存在无法做到智能感知输灰管道内的压力,当达到设定值时可以智能开启、关闭,无须程序控制,每个先导式自动成栓阀都可以自主工作,无法实现了在低压、恒压状态下能够顺利输送并无堵管现象,从而大大减少了耗气量,充分达到了节能效果,也降低了磨损的问题,而提出的一种先导式低压节能栓塞输送系统。The purpose of the present invention is to solve the problem in the prior art that the pressure in the ash conveying pipeline cannot be intelligently sensed. When the set value is reached, it can be opened and closed intelligently without program control. Working independently, it is impossible to achieve smooth transportation under low pressure and constant pressure without blocking the pipe, thus greatly reducing the gas consumption, fully achieving the effect of energy saving, and reducing the problem of wear and tear, and the proposed pilot type low pressure Energy efficient embolism delivery system.
为了实现上述目的,本发明采用了如下技术方案:In order to achieve the above object, the present invention adopts the following technical solutions:
一种先导式低压节能栓塞输送方法,包括如下步骤:A pilot-type low-pressure energy-saving embolism delivery method, comprising the following steps:
获取料位信号,并根据料位信号进行装料;Obtain the material level signal, and charge according to the material level signal;
获取装料满仓信号,打开单个主进气;Obtain the signal of the full bin, and open a single main air intake;
获取仓泵气压数据并调节仓泵气压,压力达到栓塞系统启动气压时,自动启动栓塞系统;Obtain the air pressure data of the silo pump and adjust the air pressure of the silo pump. When the pressure reaches the starting air pressure of the embolization system, the embolization system is automatically activated;
栓塞系统被启动后,先导式系统触发,自动启动介质流动方向的一个栓塞阀;After the embolization system is activated, the pilot system is triggered to automatically activate a plug valve in the direction of medium flow;
采集管道内压力,并定位堵塞位置,判断是否达到栓塞阀启动压力;Collect the pressure in the pipeline, locate the blockage position, and judge whether the start pressure of the plug valve is reached;
根据判断结果启动栓塞阀进行点进气。According to the judgment result, the plug valve is activated for point air intake.
优选地,获取装料满仓信号,打开单个主进气,在主进气与伴气管总管上加装调节阀,所有的流化气、二次气、防堵气全部取消。Preferably, a signal of full bin is obtained, a single main air intake is opened, a regulating valve is installed on the main air intake and the main pipe of the accompanying air pipe, and all the fluidizing gas, secondary gas and anti-blocking gas are canceled.
优选地,获取仓泵气压数据并调节仓泵气压,压力达到栓塞系统启动气压时,自动启动栓塞系统,启动气压为0.3MPa,栓塞系统是主动力,先导式是预动力,仓泵气压调节步骤如下:Preferably, the air pressure data of the silo pump is obtained and the air pressure of the silo pump is adjusted. When the pressure reaches the starting air pressure of the embolization system, the embolization system is automatically started, and the starting air pressure is 0.3 MPa. as follows:
计算主气路流量;Calculate the main air flow;
计算主气路气动力矩;Calculate the aerodynamic torque of the main air path;
根据设定仓泵压力值计算控制仓压力;Calculate the control bin pressure according to the set bin pump pressure value;
根据计算结果调节主气路流量。Adjust the main air flow according to the calculation result.
优选地,采集管道内压力,并定位堵塞位置,判断是否达到栓塞阀启动压力,堵塞定位步骤如下:Preferably, the pressure in the pipeline is collected, and the blockage position is located to determine whether the starting pressure of the plug valve is reached. The blockage positioning steps are as follows:
采集压力数据;Collect pressure data;
获取管道堵塞粗位置;Get the rough position of pipe blockage;
计算压力波波速;Calculate the pressure wave velocity;
利用小波信号识别压力拐点信号;Use wavelet signal to identify pressure inflection point signal;
利用高斯函数识别奇异点;Identify singular points using Gaussian function;
根据上述结果进行进行计算,根据计算结果进行堵塞定位。Calculation is performed according to the above results, and blockage location is performed according to the calculation results.
优选地,根据判断结果启动栓塞阀进行点进气,栓塞阀开启压力及位置不同,根据输送现场压力及堵塞定位计算结果进行调节,进行点进气,以达到最佳输送效率。Preferably, according to the judgment result, the plug valve is activated to perform point air intake. The opening pressure and position of the plug valve are different, and the pressure on the delivery site and the calculation result of the blockage location are adjusted to perform point air intake, so as to achieve the best delivery efficiency.
一种先导式低压节能栓塞输送系统,包括:A pilot-operated low-pressure energy-saving embolism delivery system, comprising:
料位信号获取模块:用于获取料位信号,并根据料位信号进行装料;Material level signal acquisition module: used to obtain material level signals and load materials according to the material level signals;
满仓信号获取模块:用于获取装料满仓信号,打开单个主进气;Full bin signal acquisition module: used to obtain the full bin signal and open a single main air intake;
气压获取与调节模块:用于获取仓泵气压数据并调节仓泵气压,压力达到栓塞系统启动气压时,自动启动栓塞系统;Air pressure acquisition and adjustment module: used to obtain the air pressure data of the silo pump and adjust the air pressure of the silo pump. When the pressure reaches the starting air pressure of the embolization system, the embolization system is automatically activated;
先导式系统触发模块:用于栓塞系统被启动后,先导式系统触发,自动启动介质流动方向的一个栓塞阀;Pilot-operated system triggering module: After the embolization system is activated, the pilot-operated system triggers and automatically starts an embolization valve in the flow direction of the medium;
堵塞定位模块:用于采集管道内压力,并定位堵塞位置,判断是否达到栓塞阀启动压力;Blockage positioning module: used to collect the pressure in the pipeline, locate the blockage position, and determine whether the start pressure of the plug valve is reached;
栓塞阀启动模块:用于根据判断结果启动栓塞阀进行点进气。Plug valve start module: used to start the plug valve for point air intake according to the judgment result.
优选地,所述气压获取与调节模块包括:Preferably, the air pressure acquisition and adjustment module includes:
流量计算单元:用于计算主气路流量;Flow calculation unit: used to calculate the main air flow;
气动力矩计算单元:用于计算主气路气动力矩;Aerodynamic torque calculation unit: used to calculate the aerodynamic torque of the main air circuit;
压力计算单元:用于根据设定仓泵压力值计算控制仓压力;Pressure calculation unit: used to calculate the control bin pressure according to the set bin pump pressure value;
流量调节单元:用于根据计算结果调节主气路流量。Flow adjustment unit: used to adjust the flow of the main gas path according to the calculation result.
优选地,所述堵塞定位模块包括:Preferably, the blockage location module includes:
压力采集单元:用于采集压力数据;Pressure acquisition unit: used to collect pressure data;
粗位置获取单元:用于获取管道堵塞粗位置;Coarse position acquisition unit: used to obtain the rough position of pipeline blockage;
波速计算单元:用于计算压力波波速;Wave velocity calculation unit: used to calculate the pressure wave velocity;
压力拐点信号识别单元:用于利用小波信号识别压力拐点信号;Pressure inflection point signal identification unit: used to identify pressure inflection point signals using wavelet signals;
奇异点识别单元:用于利用高斯函数识别奇异点;Singular point identification unit: used to identify singular points using Gaussian function;
堵塞定位单元:用于根据上述结果进行进行计算,根据计算结果进行堵塞定位。Blockage locating unit: used to perform calculation according to the above results, and perform blockage positioning according to the calculation results.
相比现有技术,本发明的有益效果为:Compared with the prior art, the beneficial effects of the present invention are:
1、本发明的实施可适应任何粉体物料的输送系统,安装先导栓塞阀后、在主动力和预动力的作用下系统永远不会发生堵管,且可靠性非常高。可以实现远距离输送,理论上把栓塞阀主动力与预动力看成一个输送单元,多个单元相加,想送多远都有可能,低能耗,常规输送系统输送分为四个过程,进料、加压流化、输送、管道吹扫;新型栓塞输送系统只三个过程,进料、加压输送,省略了管道吹扫;并且磨损小。1. The implementation of the present invention can be adapted to any powder material conveying system. After the pilot plug valve is installed, the system will never block the pipe under the action of the main power and the pre-power, and the reliability is very high. It can realize long-distance transportation. In theory, the main power and pre-power of the plug valve are regarded as a conveying unit. When multiple units are added together, it is possible to send as far as you want. Low energy consumption, the conventional conveying system is divided into four processes. Feeding, pressurized fluidization, conveying, and pipeline purging; the new embolization conveying system has only three processes, feeding, pressurized conveying, and omits pipeline purging; and the wear is small.
2、本发明具有超高效率,同等输灰管径输送量是常规输送系统的二倍以上,同等的系统配置,使用先导式输送系统后,输送能力可提高二到三倍以上,先导式低压节能栓塞输送系统适应性广,几乎所有的粉状物料都可以输送,且永不会堵管。系统配置相当简单,没有繁琐的控制,没有繁琐的电气、仪表,仓泵只有主进气一个进气点。所有的仓泵流化、一次气、二次气都不需要,减少的系统的故障点、控制点。2. The present invention has ultra-high efficiency. The conveying capacity of the same ash conveying pipe diameter is more than twice that of the conventional conveying system. With the same system configuration, after using the pilot conveying system, the conveying capacity can be increased by more than two to three times. The energy-saving plug conveying system has wide adaptability, and can convey almost all powdery materials without blocking the pipe. The system configuration is quite simple, there is no cumbersome control, no cumbersome electrical and instrumentation, and the silo pump has only one intake point for the main intake. All silo pump fluidization, primary gas and secondary gas are not required, which reduces the failure points and control points of the system.
3、本发明是在总结多种输送系统的基础上进行技术探索、研究,技术革新,实现了在低压、恒压状态下能够顺利输送并无堵管现象,从而大大减少了耗气量,充分达到了节能效果,也降低了磨损,并且在保留了原来新型栓塞技术所有功能的同时,还具备了先导功能。真正实现了低压、低磨损、超低耗能,同时实现永不堵管。3. The present invention conducts technical exploration, research, and technological innovation on the basis of summarizing various conveying systems, and realizes smooth conveying under low pressure and constant pressure without pipe blocking, thereby greatly reducing air consumption and fully achieving the It saves energy and reduces wear and tear, and has a pilot function while retaining all the functions of the original new embolization technology. It truly realizes low pressure, low wear and ultra-low energy consumption, and at the same time, it can never block the pipe.
附图说明Description of drawings
图1为本发明提出的一种先导式低压节能栓塞输送方法的整体步骤流程示意图;Fig. 1 is the overall step flow diagram of a kind of pilot type low-pressure energy-saving embolism delivery method proposed by the present invention;
图2为本发明提出的一种先导式低压节能栓塞输送方法的仓泵气压调节步骤流程示意图;2 is a schematic flowchart of the air pressure adjustment steps of a silo pump of a pilot-type low-pressure energy-saving plug delivery method proposed by the present invention;
图3为本发明提出的一种先导式低压节能栓塞输送方法的堵塞定位步骤流程示意图。FIG. 3 is a schematic flowchart of blockage positioning steps of a pilot-type low-pressure energy-saving plug delivery method proposed by the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.
参照图1-3,一种先导式低压节能栓塞输送方法,包括如下步骤:Referring to Figures 1-3, a pilot-type low-pressure energy-saving plug delivery method includes the following steps:
S1:获取料位信号,并根据料位信号进行装料;S1: Obtain the material level signal, and charge according to the material level signal;
S2:获取装料满仓信号,打开单个主进气,在主进气与伴气管总管上加装调节阀,所有的流化气、二次气、防堵气全部取消;S2: Obtain the signal of filling the bin, open a single main intake, install a regulating valve on the main intake and the main pipe of the accompanying gas pipe, and cancel all the fluidizing gas, secondary gas and anti-blocking gas;
S3:获取仓泵气压数据并调节仓泵气压,压力达到栓塞系统启动气压时,自动启动栓塞系统,启动气压为0.3MPa,栓塞系统是主动力,先导式是预动力,仓泵气压调节步骤如下:S3: Obtain the air pressure data of the silo pump and adjust the air pressure of the silo pump. When the pressure reaches the starting air pressure of the embolization system, the embolization system is automatically activated. The starting air pressure is 0.3MPa. The embolization system is the main power, and the pilot type is the pre-power. :
S301:计算主气路流量,计算公式如下:S301: Calculate the flow of the main gas path, the calculation formula is as follows:
式中,G为气体流量;C1为流量系数;D为流通直径;α为蝶板转角;Pr为进口压力;Pe为出口压力;T为气体温度;In the formula, G is the gas flow; C 1 is the flow coefficient; D is the flow diameter; α is the disc rotation angle; P r is the inlet pressure; P e is the outlet pressure; T is the gas temperature;
S302:计算主气路气动力矩,计算公式如下:S302: Calculate the aerodynamic torque of the main air path, the calculation formula is as follows:
式中,M为气体力矩;Kt为气动力矩系数;Pr为进口压力;Pe为出口压力;where M is the gas torque; K t is the aerodynamic torque coefficient; P r is the inlet pressure; P e is the outlet pressure;
S303:根据设定仓泵压力值计算控制仓压力,计算公式如下:S303: Calculate the control bin pressure according to the set bin pump pressure value, the calculation formula is as follows:
式中,Pk为控制仓压力;Ak为控制仓等效面积;Pe为出口压力;Ae为出口腔等效面积;K为弹簧刚度;X0为弹簧初始压缩量;X为膜片位移;F为气动力矩对膜片组件的作用力;In the formula, P k is the pressure of the control chamber; Ak is the equivalent area of the control chamber; Pe is the outlet pressure; A e is the equivalent area of the outlet cavity ; K is the spring stiffness; X 0 is the initial compression of the spring; X is the membrane Displacement of the diaphragm; F is the force of the aerodynamic moment on the diaphragm assembly;
S304:根据计算结果调节主气路流量,当出口压力达到0.3MPa时无需调节主气路流量,当未达到0.3MPa时需调节主气路流量;S304: Adjust the flow of the main gas path according to the calculation results. When the outlet pressure reaches 0.3MPa, there is no need to adjust the flow of the main gas path, and when it does not reach 0.3MPa, the flow of the main gas path needs to be adjusted;
S4:栓塞系统被启动后,先导式系统触发,自动启动介质流动方向的一个栓塞阀;S4: After the embolization system is activated, the pilot system is triggered to automatically activate an embolization valve in the direction of medium flow;
S5:采集管道内压力,并定位堵塞位置,判断是否达到栓塞阀启动压力,堵塞定位步骤如下:S5: Collect the pressure in the pipeline, locate the blockage position, and determine whether the starting pressure of the plug valve is reached. The blockage positioning steps are as follows:
S501:采集压力数据;S501: collect pressure data;
S502:获取管道堵塞粗位置,当在距离管道首端x0处发生堵塞后,t1时刻,在管道首端对管道加压,产生一个脉冲正压波,它将沿管道向下游传播,t2到达堵塞点受阻又向上游传播,在t3时刻回到管道的首端。通过捕捉正压波两次到达首端压力变送器的时间差,再结合正压波的传播速度便可以确定管道堵塞位置,其定位公式如下:S502: Obtain the rough position of the pipeline blockage. When the blockage occurs at a distance x 0 from the head end of the pipeline, at time t 1 , pressurize the pipeline at the head end of the pipeline to generate a pulse positive pressure wave, which will propagate downstream along the pipeline, t 2 reaches the blocking point and is blocked and propagates upstream, returning to the head end of the pipeline at time t3 . By capturing the time difference between the positive pressure wave reaching the head-end pressure transmitter twice, and combining with the propagation speed of the positive pressure wave, the position of the pipeline blockage can be determined. The positioning formula is as follows:
式中,x0表示堵塞粗位置;a表示正压波传播速度;Δt表示正压波两次传播到管道首端的时间差;In the formula, x 0 represents the rough position of the blockage; a represents the propagation velocity of the positive pressure wave; Δt represents the time difference between the positive pressure wave propagating to the head end of the pipeline twice;
S503:计算压力波波速,管内压力波的传播速度决定于流体的弹性、密度、管材的弹性等因素,可按照下式计算,由于管道中负压波的传播速度受输送介质参数的变化影响;因此,在实际应用中,将管道划分为若干段,根据每段的具体参数计算每一段的压力波波速,可以提高计算的精度;S503: Calculate the wave velocity of the pressure wave. The propagation velocity of the pressure wave in the pipe is determined by factors such as the elasticity of the fluid, the density, and the elasticity of the pipe material. Therefore, in practical applications, the pipeline is divided into several sections, and the pressure wave velocity of each section is calculated according to the specific parameters of each section, which can improve the calculation accuracy;
式中:ρ表示流体密度;D/e表示管径与壁厚之比;K表示流体弹性模量;E表示管材弹性模量;In the formula: ρ represents fluid density; D/e represents the ratio of pipe diameter to wall thickness; K represents fluid elastic modulus; E represents pipe elastic modulus;
S504:利用小波信号识别压力拐点信号,计算公式如下:S504: Use the wavelet signal to identify the pressure inflection point signal, and the calculation formula is as follows:
WTaf(t)=f(t)*ψa(t)WT a f(t)=f(t)*ψ a (t)
式中,是由满足允许性条件∫ψ(t)dt=0且均方可积的以为函数ψa(t)在尺度因子a下作拉伸后得到的;*代表求卷积;In the formula, It is obtained by stretching the function ψ a (t) under the scale factor a that satisfies the allowable condition ∫ψ(t)dt=0 and the mean square integrable; * represents convolution;
S505:利用高斯函数识别奇异点,计算公式如下:S505: Identify singular points using the Gaussian function, and the calculation formula is as follows:
高斯低通函数为: The Gaussian low-pass function is:
因此 therefore
S506:根据上述结果进行进行计算,根据计算结果进行堵塞定位,计算公式如下: S506: Calculate according to the above results, and locate the blockage according to the calculation results. The calculation formula is as follows:
此时小波变换WTaf(t)被表示为信号f(t)在尺度a被g(t)平滑后的一阶导数,而WTaf(t)的模极大值点对应于f(t)的突变点,从而实现管道的精确堵塞定位;At this time, the wavelet transform WT a f(t) is expressed as the first derivative of the signal f(t) after the scale a is smoothed by g(t), and the modulus maximum point of WT a f(t) corresponds to f( t), so as to achieve accurate blockage positioning of the pipeline;
S6:根据判断结果启动栓塞阀进行点进气,栓塞阀开启压力及位置不同,根据输送现场压力及堵塞定位计算结果进行调节,进行点进气,以达到最佳输送效率。S6: Start the plug valve for point air intake according to the judgment result. The opening pressure and position of the plug valve are different, and adjust according to the pressure on the delivery site and the calculation result of the blockage location, and perform point air intake to achieve the best delivery efficiency.
一种先导式低压节能栓塞输送系统,包括:A pilot-operated low-pressure energy-saving embolism delivery system, comprising:
料位信号获取模块:用于获取料位信号,并根据料位信号进行装料;Material level signal acquisition module: used to obtain material level signals and load materials according to the material level signals;
满仓信号获取模块:用于获取装料满仓信号,打开单个主进气;Full bin signal acquisition module: used to obtain the full bin signal and open a single main air intake;
气压获取与调节模块:用于获取仓泵气压数据并调节仓泵气压,压力达到栓塞系统启动气压时,自动启动栓塞系统;Air pressure acquisition and adjustment module: used to obtain the air pressure data of the silo pump and adjust the air pressure of the silo pump. When the pressure reaches the starting air pressure of the embolization system, the embolization system is automatically activated;
先导式系统触发模块:用于栓塞系统被启动后,先导式系统触发,自动启动介质流动方向的一个栓塞阀;Pilot-operated system triggering module: After the embolization system is activated, the pilot-operated system triggers and automatically starts an embolization valve in the flow direction of the medium;
堵塞定位模块:用于采集管道内压力,并定位堵塞位置,判断是否达到栓塞阀启动压力;Blockage positioning module: used to collect the pressure in the pipeline, locate the blockage position, and determine whether the start pressure of the plug valve is reached;
栓塞阀启动模块:用于根据判断结果启动栓塞阀进行点进气。Plug valve start module: used to start the plug valve for point air intake according to the judgment result.
其中,所述气压获取与调节模块包括:Wherein, the air pressure acquisition and adjustment module includes:
流量计算单元:用于计算主气路流量,计算公式如下:Flow calculation unit: used to calculate the flow of the main gas path, the calculation formula is as follows:
式中,G为气体流量;C1为流量系数;D为流通直径;α为蝶板转角;Pr为进口压力;Pe为出口压力;T为气体温度;In the formula, G is the gas flow; C 1 is the flow coefficient; D is the flow diameter; α is the disc rotation angle; P r is the inlet pressure; P e is the outlet pressure; T is the gas temperature;
气动力矩计算单元:用于计算主气路气动力矩,计算公式如下:Aerodynamic torque calculation unit: used to calculate the aerodynamic torque of the main air path, the calculation formula is as follows:
式中,M为气体力矩;Kt为气动力矩系数;Pr为进口压力;Pe为出口压力;where M is the gas torque; K t is the aerodynamic torque coefficient; P r is the inlet pressure; P e is the outlet pressure;
压力计算单元:用于根据设定仓泵压力值计算控制仓压力,计算公式如下:Pressure calculation unit: It is used to calculate the pressure of the control bin according to the set pressure value of the bin pump. The calculation formula is as follows:
式中,Pk为控制仓压力;Ak为控制仓等效面积;Pe为出口压力;Ae为出口腔等效面积;K为弹簧刚度;X0为弹簧初始压缩量;X为膜片位移;F为气动力矩对膜片组件的作用力;In the formula, P k is the pressure of the control chamber; Ak is the equivalent area of the control chamber; Pe is the outlet pressure; A e is the equivalent area of the outlet cavity ; K is the spring stiffness; X 0 is the initial compression of the spring; X is the membrane Displacement of the diaphragm; F is the force of the aerodynamic moment on the diaphragm assembly;
流量调节单元:用于根据计算结果调节主气路流量,当出口压力达到0.3MPa时无需调节主气路流量,当未达到0.3MPa时需调节主气路流量。Flow adjustment unit: It is used to adjust the flow of the main gas path according to the calculation results. When the outlet pressure reaches 0.3MPa, there is no need to adjust the flow of the main gas path. When it does not reach 0.3MPa, the flow of the main gas path needs to be adjusted.
其中,所述堵塞定位模块包括:Wherein, the blockage location module includes:
压力采集单元:用于采集压力数据;Pressure acquisition unit: used to collect pressure data;
粗位置获取单元:用于获取管道堵塞粗位置,当在距离管道首端x0处发生堵塞后,t1时刻,在管道首端对管道加压,产生一个脉冲正压波,它将沿管道向下游传播,t2到达堵塞点受阻又向上游传播,在t3时刻回到管道的首端。通过捕捉正压波两次到达首端压力变送器的时间差,再结合正压波的传播速度便可以确定管道堵塞位置,其定位公式如下:Coarse position acquisition unit: used to obtain the rough position of the pipeline blockage. When the blockage occurs at x 0 from the head end of the pipeline, at time t 1 , the pipeline is pressurized at the head end of the pipeline to generate a pulse positive pressure wave, which will move along the pipeline. Propagating downstream, t 2 reaches the blocking point and is blocked and propagates upstream again, returning to the head end of the pipeline at time t 3 . By capturing the time difference between the positive pressure wave reaching the head-end pressure transmitter twice, and combining with the propagation speed of the positive pressure wave, the position of the pipeline blockage can be determined. The positioning formula is as follows:
式中,x0表示堵塞粗位置;a表示正压波传播速度;Δt表示正压波两次传播到管道首端的时间差;In the formula, x 0 represents the rough position of the blockage; a represents the propagation velocity of the positive pressure wave; Δt represents the time difference between the positive pressure wave propagating to the head end of the pipeline twice;
波速计算单元:用于计算压力波波速,管内压力波的传播速度决定于流体的弹性、密度、管材的弹性等因素,可按照下式计算,由于管道中负压波的传播速度受输送介质参数的变化影响;因此,在实际应用中,将管道划分为若干段,根据每段的具体参数计算每一段的压力波波速,可以提高计算的精度;Wave velocity calculation unit: It is used to calculate the wave velocity of pressure waves. The propagation velocity of pressure waves in the pipe depends on factors such as the elasticity of the fluid, density, and elasticity of the pipe material. It can be calculated according to the following formula. Therefore, in practical applications, the pipeline is divided into several sections, and the pressure wave velocity of each section is calculated according to the specific parameters of each section, which can improve the calculation accuracy;
式中:ρ表示流体密度;D/e表示管径与壁厚之比;K表示流体弹性模量;E表示管材弹性模量;In the formula: ρ represents fluid density; D/e represents the ratio of pipe diameter to wall thickness; K represents fluid elastic modulus; E represents pipe elastic modulus;
压力拐点信号识别单元:用于利用小波信号识别压力拐点信号,计算公式如下:Pressure inflection point signal identification unit: It is used to identify the pressure inflection point signal by using the wavelet signal. The calculation formula is as follows:
WTaf(t)=f(t)*ψa(t)WT a f(t)=f(t)*ψ a (t)
式中,是由满足允许性条件∫ψ(t)dt=0且均方可积的以为函数ψa(t)在尺度因子a下作拉伸后得到的;*代表求卷积;In the formula, It is obtained by stretching the function ψ a (t) under the scale factor a that satisfies the allowable condition ∫ψ(t)dt=0 and the mean square integrable; * represents convolution;
奇异点识别单元:用于利用高斯函数识别奇异点,计算公式如下:Singular point identification unit: used to identify singular points using Gaussian function, the calculation formula is as follows:
高斯低通函数为: The Gaussian low-pass function is:
因此 therefore
堵塞定位单元:用于根据上述结果进行进行计算,根据计算结果进行堵塞定位,计算公式如下: Blockage locating unit: used to perform calculation according to the above results, and block blockage according to the calculation results. The calculation formula is as follows:
此时小波变换WTaf(t)被表示为信号f(t)在尺度a被g(t)平滑后的一阶导数,而WTaf(t)的模极大值点对应于f(t)的突变点,从而实现管道的精确堵塞定位。At this time, the wavelet transform WT a f(t) is expressed as the first derivative of the signal f(t) after the scale a is smoothed by g(t), and the modulus maximum point of WT a f(t) corresponds to f( t), so as to achieve accurate blockage positioning of the pipeline.
一种智能计算机设备,包括存储器和处理器,所述存储器中存储有计算机可读指令,所述处理器执行所述计算机可读指令时实现如所述的先导式低压节能栓塞输送方法的步骤。An intelligent computer device includes a memory and a processor, wherein computer-readable instructions are stored in the memory, and when the processor executes the computer-readable instructions, the processor implements the steps of the pilot-type low-voltage energy saving plug delivery method.
一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机可读指令,所述计算机可读指令被处理器执行时实现如所述的先导式低压节能栓塞输送方法的步骤。A computer-readable storage medium having computer-readable instructions stored on the computer-readable storage medium, when the computer-readable instructions are executed by a processor, implements the steps of the described pilot-type low-pressure energy saving plug delivery method.
所谓具备先导功能必须是两个先导式栓塞阀及以上组成的一个小系统单元。当第一个先导式栓塞阀达到启动指令时,先导式系统触发,永远启动介质流动方向的一个相邻先导栓塞阀自动启动。第一个先导式栓塞阀启动定为主动力,介质流向相邻先导式栓塞阀启动定为预动力,在主动力与预动力相结合的作用下,使先导式输送系统达到了气力输灰系统中的巅峰。本特点的工作原理好象是接力赛,前一个先导式栓塞阀的作用负责把输送介质传递给后面一个先导式栓塞阀,先导式的作用就好象是一个的推车,但是又加了一个人在前面拉车,这样一推一拉,更有利于输送,且输送要求气源压力更低,又好比汽车,原来二驱,加入先导系统后成了四驱。The so-called pilot function must be a small system unit composed of two pilot-operated plug valves and above. When the first pilot-operated plug valve reaches the activation command, the pilot-operated system triggers, and an adjacent pilot-operated plug valve in the direction of the flow of the medium is automatically activated. The actuation of the first pilot-operated plug valve is set as the main driving force, and the medium flowing to the adjacent pilot-operated plug valve is set as the pre-power. peak in. The working principle of this feature seems to be a relay race. The function of the former pilot plug valve is responsible for transmitting the conveying medium to the latter pilot plug valve. The function of the pilot type is like a cart, but another one is added. People pulling the car in front of it, pushing and pulling in this way, is more conducive to transportation, and the transportation requires lower air pressure, and it is like a car. The original two-wheel drive system became a four-wheel drive after adding the pilot system.
新型栓塞输送系统当介质输送到一定距离时会产生堵管情况,此时安装在管道上的自动成栓阀会自动检测输灰管内的压力,当管道内的压力达到自动成栓阀开启的压力时,阀门会自动打开向管道内进气,管道内的介质受到进气的扰动,会自动疏松,此点的堵管现象消除,阀门自动关闭,管道内的介质继续向前运动。介质运动到另一个距离时,输灰管又出现堵管现象,此时安装在管道上的自动成栓阀又会自动检测输灰管内的压力,又当管道内的压力达到自动成栓阀开启的压力时,阀门又会自动打开向管道内进气,管道内的介质又受到进气的扰动,又会自动疏松,此点的堵管现象又消除,阀门又自动关闭,管道内的介质又继续向前运动,反复此现象,最终把灰输到灰库为止。输灰管越长此现象越多。所以新型栓塞输送系统存在输送时间不稳定,压力不稳定,输送时间长的问题。先导式低压节能栓塞输送系统在先功功能主动力与预动力的作用下就避免了这一现象,使输送时间更加稳定、压力更加稳定、输送时间相应的减少等特点。The new plug conveying system will block the pipe when the medium is transported to a certain distance. At this time, the automatic plug valve installed on the pipeline will automatically detect the pressure in the ash conveying pipe. When the pressure in the pipeline reaches the pressure at which the automatic plug valve opens At this time, the valve will automatically open to intake air into the pipeline, the medium in the pipeline will be automatically loosened by the disturbance of the intake air, the pipe blocking phenomenon at this point will be eliminated, the valve will be automatically closed, and the medium in the pipeline will continue to move forward. When the medium moves to another distance, the ash conveying pipe is blocked again. At this time, the automatic bolting valve installed on the pipeline will automatically detect the pressure in the ash conveying pipe, and when the pressure in the pipeline reaches the automatic bolting valve opens. When the pressure is high, the valve will automatically open to intake air into the pipeline, and the medium in the pipeline will be disturbed by the intake air, and will automatically loosen. Continue to move forward, repeat this phenomenon, and finally output the ash to the ash warehouse. The longer the ash pipe is, the more this phenomenon occurs. Therefore, the new embolism delivery system has the problems of unstable delivery time, unstable pressure and long delivery time. The pilot-operated low-pressure energy-saving embolism conveying system avoids this phenomenon under the action of the active power and pre-power of the first function, making the conveying time more stable, the pressure more stable, and the conveying time correspondingly reduced.
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.
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