CN208749529U - A kind of liquid nitrogen pump power end assembly - Google Patents
A kind of liquid nitrogen pump power end assembly Download PDFInfo
- Publication number
- CN208749529U CN208749529U CN201820807349.XU CN201820807349U CN208749529U CN 208749529 U CN208749529 U CN 208749529U CN 201820807349 U CN201820807349 U CN 201820807349U CN 208749529 U CN208749529 U CN 208749529U
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- China
- Prior art keywords
- crankcase
- crosshead
- assembly
- liquid nitrogen
- oil pipe
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 230000001050 lubricating effect Effects 0.000 claims abstract description 10
- 238000005461 lubrication Methods 0.000 claims description 14
- 230000013011 mating Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003672 processing method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 37
- 239000010687 lubricating oil Substances 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model provides a kind of liquid nitrogen pump power end assembly, including crankcase assembly, and crankcase assembly has been correspondingly connected with crosshead housing assembly, has been correspondingly provided with lubricating system between crankcase assembly and crosshead housing assembly.Using crankcase assembly and the combination assembly of crosshead housing assembly Split module, crankcase is designed to welded type, crosshead housing design is at cast type, compared with monoblock cast or integral solder, it is not only simple in structure compact, and consider existing processing method, manufacture easy to process, assembly and maintenance, crosshead, which is equipped with, to be threadedly coupled, it can be connect with the fluid end of different size in the market and play the role of transmitting power, the split type structure that crankshaft uses d-axis to connect with multiple eccentric wheels by flat key, reduce the difficulty of crankshaft overall processing, crosshead pin shaft is equipped with top wire hole, the axial float of pin shaft can be eliminated by jackscrew fixation, lubricating system can protect moving link, extend moving link service life.
Description
Technical field
The utility model relates to liquid nitrogen pump technical fields, and in particular to a kind of liquid nitrogen pump power end assembly.
Background technique
Currently, conventional liquid nitrogen pump is mainly used to be pressurized for liquid nitrogen, operating pressure is generally in 16.5MPa or less.Its is worked
Journey is similar with common reciprocating pump, is the driving by exterior power, is converted into connecting rod, crosshead and column by crankshaft rotary motion
The linear reciprocating motion of plug, to realize the low pressure sucking and high pressure discharge of fluid media (medium).Because conventional liquid nitrogen pump pressure is lower, make
It is subject to certain restrictions with range.With the variation of oil field at home operation technique, pressure incrementally increases 40-100MPa, speed of crankshaft
Increase to 600-900rpm, because of the increase of pressure and revolving speed, the stress of power end transmission mechanism will increase, thus to power
More stringent requirements are proposed for end housing intensity and the heat dissipation of the lubrication of moving component.
Domestic existing oil field liquid nitrogen pump and integrated system are external import, and the fluid end as high pressure vulnerable part exists
External comparative maturity makes it not only be able to satisfy the country and incrementally increases so being necessary to design a kind of liquid nitrogen pump power end
Operational pressure, and can be connected with the fluid end of external different size model.
Summary of the invention
The purpose of this utility model overcomes the lubrication heat dissipation problem of existing liquid nitrogen pump power end casing rigidity, moving component,
And can not connection mating with the fluid end of external different size model the problem of, provide a kind of liquid nitrogen pump power end assembly, no
It is only able to satisfy the domestic operational pressure incrementally increased, and can be connected with the fluid end of external different size model.
The purpose of this utility model is reached by following technical measures: a kind of liquid nitrogen pump power end assembly, including song
Axle box assembly, it is characterised in that: the crankcase assembly has been correspondingly connected with crosshead housing assembly, crankcase assembly and
Lubricating system is correspondingly provided between crosshead housing assembly.
Further, the crankcase assembly includes crankcase welded case, is equipped with crankshaft in crankcase welded case
Axle box bearing seat, crankcase bearing seat is corresponding to be equipped with crankshaft bearing, is equipped with crankshaft in crankshaft bearing, crankshaft is connected with connecting rod.
Further, the crankcase welded case includes crankcase body and crankcase case lid, crankcase body and bent
Axle box case lid is connected by crankcase fixing bolt, and crankcase body and cross housing assembly mating surface are equipped with flange mounting surface,
Crankcase welded case is equipped with oil return opening.Oil return opening can store the lubricating oil of reflux, realizes the continuous lubrication of lubricating oil and returns
It receives and utilizes.
Further, the crankshaft includes d-axis, eccentric wheel and flat key, and eccentric wheel is mounted on d-axis by flat key, partially
Heart wheel and d-axis are equipped with oilhole, the number of eccentric wheel be it is multiple, eccentric wheel is connect with connecting rod.Crankshaft using d-axis and
The split type structure that three eccentric wheels are linked together by flat key reduces the difficulty of crankshaft overall processing.
Further, the crosshead housing assembly includes cross casing, and cross casing is matched with crankcase assembly
Conjunction face is equipped with flange mounting surface, and crosshead sliding sleeve is equipped in cross casing, and cross casing is equipped with oilhole, cross sliding sleeve
Interior to be equipped with crosshead and crosshead pin shaft, crosshead and connecting rod are by crosshead pin axis connection, and crosshead is far from crosshead pin shaft
One end be equipped with and can be equipped with semi-circular oil leab with the screw thread of fluid end clamp connection, crosshead sliding sleeve, cross casing be
Cast type.
Further, the crosshead pin shaft is equipped with the jackscrew that installation can prevent the jackscrew of crosshead pin shaft axial float
Hole.
Further, the lubricating system includes main oil pipe and rotary joint, and main oil pipe is connected with branch oil pipe, branch oil pipe packet
The first branch oil pipe and the second branch oil pipe are included, the first branch oil pipe is connect by rotary joint with d-axis, the second branch oil pipe and crosshead
Shell connection.
Further, the oilhole on first branch oil pipe and eccentric wheel and d-axis forms lubrication eccentric wheel, crankshaft
The semi-circular on oilhole and crosshead sliding sleeve on the circuit of bearing and connecting rod, the second branch oil pipe and cross casing lubricates
Oil duct forms the circuit of lubrication crosshead and crosshead sliding sleeve.
Further, the number of the crosshead housing assembly is multiple.
Further, the crankcase assembly is pacified by flange connection surface and multiple crosshead housing assemblies by flange
Dress face is bolted with corresponding.Crankcase is designed to welded type, it is this split type by crosshead housing design at cast type
Structure than monoblock cast or integral solder convenient for assembly and maintenance.
Compared with prior art, the utility model has the beneficial effects that total using crankcase assembly and cross casing
It is assembled at split type block combiner, crankcase is designed to welded type, crosshead housing design is at cast type, compared with whole casting
Make or integral solder, be not only simple in structure it is compact, and according to the design feature of each module, fully considered it is existing plus
Work mode, manufacture, assembly and maintenance easy to process.
Design has threaded connection in crosshead, can be played with the conventional fluid end of different size in the market by clamp connection
Reinforce the effect of fastening.
The split type structure that crankshaft uses d-axis to connect with multiple eccentric wheels by flat key, reduces crankshaft overall processing
Difficulty.
Crosshead pin shaft is equipped with top wire hole, and the axial float of pin shaft can be eliminated by jackscrew fixation.
The oilhole on the first branch oil pipe and eccentric wheel and d-axis in lubricating system forms lubrication eccentric wheel, crankshaft axis
Hold the circuit with connecting rod, the semi-circular lubricating oil on oilhole and crosshead sliding sleeve on the second branch oil pipe and cross casing
Road forms the circuit of lubrication crosshead and crosshead sliding sleeve, and there are oil outlet, storage and reflux lubrications below crankshaft welded case
Oil, the system completely lubricated can protect moving link, extend the service life of moving link.
It elaborates with reference to the accompanying drawings and detailed description to the utility model.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the main view of the utility model.
Fig. 3 is the structural schematic diagram of the utility model crankcase assembly.
Fig. 4 is the structural schematic diagram of the utility model crosshead housing assembly.
Fig. 5 is A-A cross-sectional view in the utility model Fig. 2.
Fig. 6 is B-B cross-sectional view in the utility model Fig. 5.
Wherein: 100- crankcase assembly, 101- crankcase case lid, 102- crankcase body, 103- d-axis, 104- are eccentric
Wheel, 105- flat key, 106- crankshaft bearing, 107- connecting rod, 108- crankcase fixing bolt, 109- crankcase bearing seat, 110- are bent
Axle box welded case, 200- crosshead housing assembly, 201- cross casing, 202- crosshead, 203- crosshead sliding sleeve, 204-
Crosshead pin shaft, 205- top wire hole, 300- lubricating system, 301- main oil pipe, 302- branch oil pipe, 303- rotary joint, 304- are returned
Hydraulic fluid port.
Specific embodiment
Embodiment, as shown in Figures 1 to 6, a kind of liquid nitrogen pump power end assembly, including crankcase assembly 100, crankcase
Total 100 one-tenth correspondences are connected with cross housing assembly 200, crankcase assembly 100 and cross shell it is 200 one-tenth total between be correspondingly provided with
Lubricating system 300, total 100 one-tenth of crankcase include crankcase welded case 110, set in crankcase welded case 110 there are four
Crankcase bearing seat 109, for the corresponding installation of crankcase bearing seat 109 there are four crankshaft bearing 106, crankshaft bearing 106 is interior to be equipped with song
Axis, crankshaft are connected with connecting rod 107, and crankcase welded case 110 includes crankcase body 101 and crankcase case lid 102, crankcase
Cabinet 101 is connect with crankcase case lid 102 by eight crankcase fixing bolts 108, crankcase body 101 and cross casing
200 mating surface of assembly is equipped with flange mounting surface, and for 110 lower section of crankcase welded case there are oil return opening 304, crankshaft includes d-axis
103, eccentric wheel 104 and flat key 105, eccentric wheel 104 are mounted on d-axis 103 by flat key 105, eccentric wheel 104 and d-axis 103
Equipped with oilhole, the number of eccentric wheel 104 is three, and eccentric wheel 104 is connect with connecting rod 107, each 104 two sides of eccentric wheel point
Not She You 106 crankshaft bearing 106 of crankshaft bearing use cylinder roller bearing, crosshead housing assembly 200 include cross casing
201, the individually casting processing of cross casing 201, cross casing 201 and the total 100 one-tenth mating surfaces of crankcase are pacified equipped with flange
Dress face, is equipped with crosshead sliding sleeve 203 in cross casing 201, and cross casing 201 is equipped with oilhole, in cross sliding sleeve 203
Equipped with crosshead 202 and crosshead pin shaft 204, crosshead 202 is equipped with far from one end of crosshead pin shaft 204 can be with fluid end card
The screw thread of connection is bound round, crosshead 202 is connect with connecting rod 107 by crosshead pin shaft 204, and crosshead sliding sleeve 203 is equipped with semi-circular
Oil leab, crosshead pin shaft 204 are equipped with the top wire hole 205 that installation can prevent the jackscrew of crosshead pin shaft axial float, lubrication
System 300 includes main oil pipe 301 and rotary joint 303, and main oil pipe 301 is connected with branch oil pipe 302, and branch oil pipe 302 includes first
Branch oil pipe and the second branch oil pipe, the first branch oil pipe are connect by rotary joint 303 with d-axis 103, the second branch oil pipe and crosshead
Shell 201 connects, and the oilhole on the first branch oil pipe and eccentric wheel 104 and d-axis 103 forms lubrication eccentric wheel 104, crankshaft
The circuit of bearing 106 and connecting rod 107, lubricating oil can spray the song in 104 two sides of eccentric wheel from the oilhole on eccentric wheel 104
On axle bearing 106, the lubrication of crankshaft bearing 106, oilhole and cross on the second branch oil pipe and cross casing 201 are realized
Semi-circular oil leab on head sliding sleeve 203 forms the circuit of lubrication crosshead 202 and crosshead sliding sleeve 203, and lubricating oil passes through
Ten under semi-circular oil leab lubricating movements state on oilhole and crosshead sliding sleeve 203 on cross casing 201
Prefix 202, oil return opening 304 can store and flow back lubricating oil, realize the recycling of lubricating oil, crosshead housing assembly 200
Number is 3, crankcase assembly 100 by flange connection surface and 3 crosshead housing assemblies 200 by flange mounting surface and
Correspondence is bolted.
When liquid nitrogen pump work, power is applied on eccentric wheel 104 by the flat key 105 on d-axis 103, eccentric wheel 104
Connecting rod 107 is driven, and drags crosshead pin shaft 204 and crosshead 202 does linear reciprocating motion in crosshead sliding sleeve 203, ten
Plunger in prefix 202 and fluid end is by clamp connection, to impart power to fluid end.
Claims (10)
1. a kind of liquid nitrogen pump power end assembly, including crankcase assembly, it is characterised in that: the crankcase assembly is corresponding to be connected
It is connected to crosshead housing assembly, lubricating system, crankcase are correspondingly provided between crankcase assembly and crosshead housing assembly
It is split type assembly and connection with cross casing.
2. a kind of liquid nitrogen pump power end assembly according to claim 1, it is characterised in that: the crankcase assembly includes
Crankcase welded case, crankcase welded case is interior to be equipped with crankcase bearing seat, and crankcase bearing seat correspondence is equipped with crankshaft axis
It holds, crankshaft is equipped in crankshaft bearing, crankshaft is connected with connecting rod.
3. a kind of liquid nitrogen pump power end assembly according to claim 2, it is characterised in that: the crankcase welded case packet
Crankcase body and crankcase case lid are included, crankcase body is connect with crankcase case lid by crankcase fixing bolt, crankcase
Cabinet and crosshead housing assembly mating surface are equipped with flange mounting surface, and crankcase welded case is equipped with oil return opening.
4. a kind of liquid nitrogen pump power end assembly according to claim 2, it is characterised in that: the crankshaft include d-axis, partially
Heart wheel and flat key, eccentric wheel are mounted on d-axis by flat key, and eccentric wheel and d-axis are equipped with oilhole, and the number of eccentric wheel is
Multiple, eccentric wheel is connect with connecting rod.
5. a kind of liquid nitrogen pump power end assembly according to claim 2, it is characterised in that: the crosshead housing assembly packet
Cross casing is included, cross casing and crankcase assembly mating surface are equipped with flange mounting surface, are equipped with ten in cross casing
Prefix sliding sleeve, cross casing are equipped with oilhole, are equipped with crosshead and crosshead pin shaft, crosshead and connecting rod in cross sliding sleeve
By crosshead pin axis connection, crosshead far from one end of crosshead pin shaft be equipped with can with the screw thread of fluid end clamp connection, ten
Prefix sliding sleeve is equipped with semi-circular oil leab.
6. a kind of liquid nitrogen pump power end assembly according to claim 5, it is characterised in that: the crosshead pin shaft is equipped with peace
Dress can prevent the top wire hole of the jackscrew of crosshead pin shaft axial float.
7. a kind of liquid nitrogen pump power end assembly according to claim 4, it is characterised in that: the lubricating system includes main oil
Pipe and rotary joint, main oil pipe are connected with branch oil pipe, and branch oil pipe includes the first branch oil pipe and the second branch oil pipe, and the first branch oil pipe is logical
It crosses rotary joint to connect with d-axis, the second branch oil pipe is connect with cross casing.
8. a kind of liquid nitrogen pump power end assembly according to claim 7, it is characterised in that: first branch oil pipe and bias
Oilhole on wheel and d-axis forms the circuit of lubrication eccentric wheel, crankshaft bearing and connecting rod, the second branch oil pipe and cross head capsule
Semi-circular oil leab on oilhole and crosshead sliding sleeve on body forms the circuit of lubrication crosshead and crosshead sliding sleeve.
9. a kind of liquid nitrogen pump power end assembly according to claim 1, it is characterised in that: the crosshead housing assembly
Number is multiple.
10. a kind of liquid nitrogen pump power end assembly according to claim 9, it is characterised in that: the crankcase assembly is logical
It crosses flange connection surface and is bolted by flange mounting surface with corresponding with multiple crosshead housing assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807349.XU CN208749529U (en) | 2018-05-29 | 2018-05-29 | A kind of liquid nitrogen pump power end assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807349.XU CN208749529U (en) | 2018-05-29 | 2018-05-29 | A kind of liquid nitrogen pump power end assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208749529U true CN208749529U (en) | 2019-04-16 |
Family
ID=66052531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820807349.XU Active CN208749529U (en) | 2018-05-29 | 2018-05-29 | A kind of liquid nitrogen pump power end assembly |
Country Status (1)
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| CN (1) | CN208749529U (en) |
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