CN223287795U - Venturi tube, ceramic fiber filter tube and flue gas dust removal device - Google Patents
Venturi tube, ceramic fiber filter tube and flue gas dust removal deviceInfo
- Publication number
- CN223287795U CN223287795U CN202422435859.7U CN202422435859U CN223287795U CN 223287795 U CN223287795 U CN 223287795U CN 202422435859 U CN202422435859 U CN 202422435859U CN 223287795 U CN223287795 U CN 223287795U
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- venturi tube
- tube
- ceramic fiber
- fiber filter
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Abstract
本实用新型公开了一种文丘里管、陶瓷纤维滤管以及烟气除尘装置，涉及烟气处理技术领域，文丘里管包括沿长度方向依次连接的入口段、收缩段、喉部以及扩散段，扩散段远离喉部的一端连接有稳流段，稳流段沿长度方向上的内径保持一致；本实用新型的技术方案提出的文丘里管通过设置稳流段在扩散段之后提供一个供气体流动稳定的区域，将压缩气体在文丘里管的内壁经过两次反弹后的流向修正，使气体压力、流速降低，减少了对陶瓷纤维滤管的损害，大大降低喷吹远端的断管率，保障了陶瓷纤维滤管的工作的稳定性也延长了其使用寿命。
The utility model discloses a venturi tube, a ceramic fiber filter tube and a flue gas dust removal device, which relate to the technical field of flue gas treatment. The venturi tube comprises an inlet section, a contraction section, a throat and a diffusion section connected in sequence along the length direction. The end of the diffusion section away from the throat is connected to a flow stabilization section, and the inner diameter of the flow stabilization section along the length direction is consistent. The venturi tube proposed in the technical solution of the utility model provides an area for stable gas flow after the diffusion section by arranging the flow stabilization section, corrects the flow direction of the compressed gas after two rebounds on the inner wall of the venturi tube, reduces the gas pressure and flow rate, reduces the damage to the ceramic fiber filter tube, greatly reduces the tube breakage rate at the far end of the injection, ensures the working stability of the ceramic fiber filter tube and prolongs its service life.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment, in particular to a venturi tube, a ceramic fiber filter tube and a flue gas dust removal device.
Background
The ceramic fiber filter tube is fume treatment equipment integrating dust removal and denitration, the fume treatment equipment is made of micron-sized fibers, the ceramic fiber filter tube is of a complicated fiber structure, dust can be well trapped on the surface of the filter tube, clean fume can pass through the filter tube to be discharged into the atmosphere, and the dust on the surface of the filter tube is collected and discharged outside after a dust hopper of a dust remover after being subjected to pulse blowing and ash removal. With the gradual application of ceramic fiber filter tubes to flue gas treatment in industries such as glass, coking, biomass power generation and the like, the running stability, the service life and the pipe breakage rate of the ceramic fiber filter tubes are more and more concerned.
The prior ceramic fiber filter tubes are mostly blown by adopting compressed air pulse, after a pulse valve is opened, compressed air in an air bag enters the blowing tube through the pulse valve, then each filter tube is blown by a row of nozzles below the blowing tube, and the compressed air sprayed by the nozzles firstly passes through a venturi tube above the filter tubes to adjust the flow rate, pressure and trend of the air and then enters the filter tubes to form blowing. After compressed air enters the blowing pipe, the condition of uneven air flow can occur, and the impact on the ceramic fiber filter pipe is large. In addition, after the ceramic filter tube dust remover is filled with high-temperature flue gas, the ceramic filter tube dust remover is heated and expanded to deform, so that the injection tube is slightly misplaced, the injection is not centered and uneven, and the impact of a far-end nozzle on the inner wall of the ceramic fiber filter tube can be further increased, so that the service life of the ceramic fiber filter tube is influenced.
Disclosure of utility model
The utility model mainly aims to provide a venturi tube, a ceramic fiber filter tube and a flue gas dust removal device, and aims to reduce the impact of compressed gas on the ceramic fiber filter tube and prolong the service life of ceramic fibers.
In order to achieve the above purpose, the venturi tube provided by the utility model comprises an inlet section, a contraction section, a throat section and a diffusion section which are sequentially connected along the length direction, wherein one end of the diffusion section, which is far away from the throat section, is connected with a steady flow section, and the inner diameter of the steady flow section along the length direction is kept consistent.
In one embodiment, the steady flow section and the diffusion section have the same diameter near one end of the steady flow section.
In one embodiment, the length of the steady flow section is A, and A is more than or equal to 10cm and less than or equal to 20cm.
In one embodiment, the length of the steady flow section is 10cm.
In one embodiment, a transition fillet is provided at the junction of the diffuser section and the flow stabilizing section.
In one embodiment, the venturi tube is made of one of ceramic, cast iron and stainless steel.
In one embodiment, the diffusion section and the steady flow section are of a unitary structure.
In one embodiment, the inlet section is formed with a mounting portion extending radially outwardly from an end of the convergent section.
The utility model also provides a ceramic fiber filter tube, which comprises a venturi tube and a tube body, wherein the venturi tube part extends into an inner hole of the tube body, and the installation part is lapped on the air inlet end of the tube body.
The venturi comprises an inlet section, a contraction section, a throat and a diffusion section which are sequentially connected along the length direction, one end of the diffusion section, which is far away from the throat, is connected with a steady flow section, and the inner diameter of the steady flow section along the length direction is kept consistent.
The utility model also provides a flue gas dust removal device which comprises the ceramic fiber filter tube.
The technical scheme of the utility model provides a venturi tube which comprises an inlet section, a contraction section, a throat section, a diffusion section and a steady flow section. The velocity of the gas increases as it enters the constriction from the inlet section, resulting in a pressure drop, thereby creating a negative pressure zone in the throat which helps to trap particulate matter in the gas. The steady flow section is arranged to provide a region for stable gas flow after the diffusion section, so that the flow direction of compressed gas after two rebounds on the inner wall of the venturi tube is corrected, the gas pressure and the flow speed are reduced, the damage to the ceramic fiber filter tube is reduced, the pipe breaking rate of the injection far end is greatly reduced, and the working stability of the ceramic fiber filter tube is ensured, and the service life of the ceramic fiber filter tube is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an embodiment of a venturi tube according to the present utility model.
Reference numerals illustrate:
1000. 1, an inlet section, 11, an installation part, 2, a contraction section, 3, a throat part, 4, a diffusion section, 5, and a steady flow section.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present utility model), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The ceramic fiber filter tube is fume treatment equipment integrating dust removal and denitration, the fume treatment equipment is made of micron-sized fibers, the ceramic fiber filter tube is of a complicated fiber structure, dust can be well trapped on the surface of the filter tube, clean fume can pass through the filter tube to be discharged into the atmosphere, and the dust on the surface of the filter tube is collected and discharged outside after a dust hopper of a dust remover after being subjected to pulse blowing and ash removal. With the gradual application of ceramic fiber filter tubes to flue gas treatment in industries such as glass, coking, biomass power generation and the like, the running stability, the service life and the pipe breakage rate of the ceramic fiber filter tubes are more and more concerned.
The prior ceramic fiber filter tubes are mostly blown by adopting compressed air pulse, after a pulse valve is opened, compressed air in an air bag enters the blowing tube through the pulse valve, then each filter tube is blown by a row of nozzles below the blowing tube, and the compressed air sprayed by the nozzles firstly passes through a venturi tube above the filter tubes to adjust the flow rate, pressure and trend of the air and then enters the filter tubes to form blowing. After compressed air enters the blowing pipe, the condition of uneven air flow can occur, and the impact on the ceramic fiber filter pipe is large. In addition, after the ceramic filter tube dust remover is filled with high-temperature flue gas, the ceramic filter tube dust remover is heated and expanded to deform, so that the injection tube is slightly misplaced, the injection is not centered and uneven, and the impact of a far-end nozzle on the inner wall of the ceramic fiber filter tube can be further increased, so that the service life of the ceramic fiber filter tube is influenced.
In order to solve the above-mentioned problems, please refer to fig. 1, the present utility model proposes a venturi tube 1000, which comprises an inlet section 1, a constriction section 2, a throat section 3 and a diffuser section 4 sequentially connected along the length direction, wherein one end of the diffuser section 4, which is far away from the throat section 3, is connected with a steady flow section 5, and the inner diameter of the steady flow section 5 along the length direction is kept consistent.
The technical scheme of the utility model provides a venturi tube 1000, which comprises an inlet section 1, a contraction section 2, a throat section 3, a diffusion section 4 and a steady flow section 5. The gas increases in velocity as it enters the constriction 2 from the inlet section 1, resulting in a pressure drop, thereby creating a negative pressure zone in the throat 3 which helps to trap particulate matter in the gas. By arranging the steady flow section 5 to provide a region for stabilizing the flow of gas after the diffusion section 4, the flow direction of the compressed gas after the inner wall of the venturi tube 1000 is rebounded for two times is corrected, so that the pressure and the flow speed of the gas are reduced, the damage to the ceramic fiber filter tube is reduced, the pipe breaking rate at the far end of injection is greatly reduced, the working stability of the ceramic fiber filter tube is ensured, and the service life of the ceramic fiber filter tube is prolonged.
In an alternative embodiment, to ensure the stability of the compressed air in the venturi tube 1000, please refer to fig. 1, the diameters of the steady flow section 5 and the end of the diffusion section 4 near the steady flow section 5 are equal. The effect of this design is to provide a smooth transition that reduces drag and turbulence of the fluid as it enters the steady flow section 5 from the diffuser section 4, thereby helping to maintain stability of the fluid flow. In fluid dynamics, abrupt diameter changes can result in abrupt changes in fluid velocity and pressure, thereby creating turbulence and eddies. By making the diameters of the steady flow section 5 and the diffuser section 4 equal, such abrupt changes can be avoided, reducing the instability of the compressed air after passing through the diffuser section 4. This smooth transition helps to reduce fluid scouring against the inner walls of the venturi 1000, thereby extending the service life of the device. At the same time, this also helps to reduce the energy loss of the compressed air as it passes through the venturi 1000, improving the efficiency of the overall venturi 1000.
Optionally, the length of the steady flow section 5 is A, and A is more than or equal to 10cm and less than or equal to 20cm. The effect of this design is to provide a suitable flow stabilizing zone so that the compressed air has sufficient length to stabilize after leaving the diffuser section 4, reducing turbulence and eddies, and thus improving dust removal efficiency. The length of the steady flow section 5 is critical to ensure stability of the fluid flow. If the length is too short, the compressed air may not be sufficiently stabilized, resulting in poor dust removal, and if the length is too long, the overall size of the venturi 1000 may be increased, resulting in reduced space utilization efficiency. Therefore, by defining the length range of the steady flow section 5, it is possible to ensure that the compactness of the apparatus can be maintained while maintaining efficient dust removal. This design also helps to reduce the energy loss of the fluid in the steady flow section 5 and to improve the energy efficiency of the whole system. Further, by providing a standardized length, the venturi 1000 may be more easily mass produced and installed. By fixing the length of the steady flow section 5, the consistency of the performance of each venturi 1000 can be ensured, facilitating performance testing and quality control. In addition, standardized lengths also help simplify inventory management and logistics processes. In this embodiment, the length of the steady flow section 5 is 15cm, and in other embodiments, the length of the steady flow section 5 may be specifically selected according to the pressure of the compressed gas in the venturi 1000 and the diameter of the venturi 1000.
Further, in order to ensure the stable transition of the compressed air when the compressed air enters the steady flow section 5 from the diffusion section 4, referring to fig. 1, a transition fillet is provided at the junction of the diffusion section 4 and the steady flow section 5. The effect of providing transition fillets is to reduce drag and turbulence in the fluid flow process by reducing sharp edges at the junction, thereby improving the smoothness and stability of the fluid flow. The design of the transition rounded corners helps to reduce the energy loss of the fluid as it passes through the diffuser section 4 and the stabilizer section 5, improving the efficiency of the venturi 1000. In addition, the rounded corners can also reduce the scouring of the inner wall of the venturi 1000 by the fluid and prolong the service life of the device. In fluid dynamics, sharp edges can lead to fluid separation and the generation of vortices, which can increase pressure loss and wear. By introducing transition fillets, the flow path of the compressed air can be smoothed, reducing these adverse effects.
In an alternative embodiment, to ensure the service life of the venturi 1000, the venturi 1000 is made of one of ceramic, cast iron, and stainless steel. The ceramic has good wear resistance and corrosion resistance, is suitable for high-temperature and corrosive environments, has lower cast iron cost, is suitable for general industrial application, and has good strength and corrosion resistance. By providing a variety of material choices, it is ensured that the venturi 1000 can meet the needs of different usage scenarios. This flexibility in design helps to expand the applicability of the venturi 1000.
In an alternative embodiment, to facilitate manufacturing of venturi 1000, diffuser section 4 and stabilizer section 5 are integrally formed. The integral structure helps to improve the overall strength and stability of the venturi 1000, reducing the risk of failure due to loosening of the connection. In addition, the unitary structure also helps to reduce leakage and turbulence during fluid flow and improves the performance of the venturi 1000. The unitary structure may reduce the need for welding or threading during manufacturing, thereby reducing manufacturing complexity and cost. Helping to improve the reliability of the venturi 1000 and reducing potential leakage points and maintenance requirements.
In an alternative embodiment, to facilitate the installation of the venturi tube 1000, referring to fig. 1, the end of the inlet section 1 remote from the convergent section 2 is formed with a mounting portion 11 extending radially outwardly. The purpose of this design is to provide a structure that facilitates installation so that the venturi 1000 can be more easily connected to external equipment or piping. The design of the mounting portion 11 helps to simplify the mounting process of the venturi 1000, improving the convenience and reliability of the mounting. In addition, the mounting portion 11 may also serve as a support structure to enhance the stability of the venturi 1000. In practice, the mounting portion 11 may be designed to match the shape of the pipe or device interface, thereby ensuring that the venturi 1000 can be seamlessly integrated into the overall system. And also helps to reduce potential errors during installation, improving convenience and accuracy of installation of the venturi 1000.
The utility model also provides a ceramic fiber filter tube, which comprises a tube body and a venturi tube 1000, wherein the venturi tube 1000 partially stretches into an inner hole of the tube body, and the installation part 11 is lapped on the air inlet end of the tube body. The venturi 1000 is combined with the body to form a complete ceramic fiber filter tube system for the filtration of compressed air. And, by combining the venturi 1000 with the tube body, it is ensured that the fluid can achieve an efficient dust removal effect when passing through the filter tube. The design of the venturi 1000 helps to accelerate the fluid flow and increase the dust removal efficiency, while the tube provides a structural support that protects the venturi 1000 from damage. In addition, the design of the mounting part 11 allows the whole filter tube system to be conveniently mounted in the existing pipeline system, and the flexibility and compatibility of the system are improved. The specific structure of the venturi tube 1000 refers to the above embodiments, and since the ceramic fiber filter tube adopts all the technical solutions of all the embodiments, the venturi tube has at least all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
The utility model also provides a flue gas dust removal device which comprises the ceramic fiber filter tube, and the flue gas dust removal device can utilize the acceleration and deceleration effects of the Venturi tube 1000 and the filtering effect of the ceramic fiber to realize the efficient removal of dust in flue gas. The device is suitable for various industrial processes, and is helpful for reducing air pollution and improving environmental quality. In addition, the design of the ceramic fiber filter tube also helps to reduce maintenance requirements of the apparatus because it can withstand high temperatures and corrosive environments, thereby extending the service life of the apparatus. The specific structure of the ceramic fiber filter tube refers to the above embodiments, and because the flue gas dust removal device adopts all the technical schemes of all the embodiments, the ceramic fiber filter tube has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only exemplary embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422435859.7U CN223287795U (en) | 2024-10-08 | 2024-10-08 | Venturi tube, ceramic fiber filter tube and flue gas dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422435859.7U CN223287795U (en) | 2024-10-08 | 2024-10-08 | Venturi tube, ceramic fiber filter tube and flue gas dust removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223287795U true CN223287795U (en) | 2025-09-02 |
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ID=96867012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422435859.7U Active CN223287795U (en) | 2024-10-08 | 2024-10-08 | Venturi tube, ceramic fiber filter tube and flue gas dust removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223287795U (en) |
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2024
- 2024-10-08 CN CN202422435859.7U patent/CN223287795U/en active Active
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