CN109404274A - A kind of cold end of low-temperature high-pressure plunger pump - Google Patents
A kind of cold end of low-temperature high-pressure plunger pump Download PDFInfo
- Publication number
- CN109404274A CN109404274A CN201811248753.9A CN201811248753A CN109404274A CN 109404274 A CN109404274 A CN 109404274A CN 201811248753 A CN201811248753 A CN 201811248753A CN 109404274 A CN109404274 A CN 109404274A
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- China
- Prior art keywords
- plunger
- cold end
- pressure
- low
- cylinder sleeve
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- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000012856 packing Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 210000004907 gland Anatomy 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 79
- 239000007788 liquid Substances 0.000 abstract description 39
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 39
- 239000002184 metal Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 238000009834 vaporization Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
- F04B2015/081—Liquefied gases
- F04B2015/0824—Nitrogen
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention belongs to low-temperature high-pressure plunger pump technical fields, more particularly to a kind of cold end of low-temperature high-pressure plunger pump, including cold end shell, plunger and cylinder sleeve, the inside of cylinder sleeve is arranged in plunger, the cylinder sleeve is located at the inside of cold end shell, the front end of cold end shell is provided with connection locking device, cold end shell includes left and right two interconnected cavity bodies, it include cylinder sleeve, valve group and discharge flange in right cavity body, valve group includes valve seat, the high pressure valve being installed in valve seat and the low pressure valve being mounted between cylinder sleeve and valve seat.Novel valve block structure, using metal sealing, pass through the continuous switch of high pressure valve and low pressure valve, the ultra-low temperature liquid nitrogen of normal pressure is switched into high pressure low temperature liquid nitrogen and is discharged, it can satisfy the requirement of high frequency time switch, low with pumped (conveying) medium temperature, the high feature of output pressure solves the problems, such as that common plunger pump can not pump cryogenic high pressure liquid nitrogen.
Description
Technical field
The invention belongs to low-temperature high-pressure plunger pump technical fields, more particularly to a kind of cold end of low-temperature high-pressure plunger pump.
Background technique
Liquid nitrogen pump is one of common equipment in oil gas drilling operation, is mainly used to carry out pressure break with note, gaslift or displacement
Operation；The compressed nitrogen that common separating nitrogen gas preparing equipment directly generates only up to generate the discharge pressure of 35MPa, it is difficult to meet
How the pressure break requirement in oil field, generate high pressure nitrogen as a problem.Since liquid nitrogen is a kind of super-low liquid, boiling point-
It is 196 DEG C, very sensitive to temperature, it is influenced by this physical features and liquid nitrogen special process of liquid nitrogen, the injection of traditional sucrose
Equipment, the water injecting pump as used in oil-field flooding, the fracturing pump of conventional pressure break are not suitable for the conveying of cryogenic liquid.Because general
The heat transfer that the plunger pump of logical structure is easy to generate power end friction at work into the liquid nitrogen pumped so as to cause
Liquid nitrogen vaporization, and conventional fluid end can not also prevent the liquid nitrogen of pumping from absorbing heat from the external world and vaporize, the vaporization of liquid nitrogen
Will lead to plunger pump can not work normally.
Existing technology pumping liquid nitrogen is mainly the plunger pump of low-temp low-pressure.The heat generated in high-speed motion due to plunger
Amount can make liquid nitrogen vaporization, therefore cannot pump note high-pressure liquid nitrogen.And other fracturing pumps etc. on structure, sealing and material also all without
Method meets the cryogenic high pressure pumping of this special media of liquid nitrogen, the reason is that: 1, it prevents from pumping without heat preservation or heat insulation layer in structure
The liquid nitrogen sent directly generates heat with the external world and exchanges, so that liquid nitrogen vaporization；2, common material does not have low temperature using characteristic,
It can fail under low temp operation；3, there is no sealing ring support between the plunger and cylinder body of fracturing pump, due to friction in high-speed motion
Face is not only easy to produce greatly more heats, but also plunger is easy to produce bias during exercise, is unfavorable for cryogenic high pressure pumping.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned technical problems, and to provide a kind of cold end of low-temperature high-pressure plunger pump, can be complete
Complete solution is determined above-mentioned technical problem.
The technical solution for solving above-mentioned technical problem is as follows:
The inside of cylinder sleeve is arranged in a kind of cold end of low-temperature high-pressure plunger pump, including cold end shell, plunger and cylinder sleeve, plunger,
Cylinder sleeve is located at the inside of cold end shell, and the front end of cold end shell is provided with connection locking device, and cold end shell includes left and right two
The right end of interconnected cavity body, plunger is packed into cylinder sleeve, and the left end of plunger passes through left cavity body and stretches out outside cold end shell, left
Sealing element around plunger is installed in cavity body, includes cylinder sleeve, valve group and discharge flange in right cavity body, valve group includes valve
The center of seat, the high pressure valve being installed in valve seat and the low pressure valve being mounted between cylinder sleeve and valve seat, valve seat is equipped with through-hole, both ends
Equipped with spiral groove, valve seat, cylinder sleeve and discharge flange are compressed by gland；The right end face of cylinder sleeve is provided with spiral groove, cylinder sleeve
Left end wall on offer through-hole, be connected to by the through-hole with cold end shell, be provided with gas returning port on the midfeather of cold end shell
And inlet.
It further says, connection locking device includes that jackscrew, clip, clip retaining ring connect bolt, clip retaining ring with plunger
It is successively inserted in clip after plunger connects bolt, the end of plunger connection bolt is connect with plunger, and spiral shell is provided on the left of clip
Line, screw thread are connect with power end, are locked after connection by jackscrew.
It further says, the sealing element around plunger includes plunger rides ring, plunger sealing ring and plunger sealing support ring.
Further to say, the left intracorporal front end of cavity is provided with packing_seal group, and packing_seal group is compressed by pressure ring, and by
Support ring is assembled on packing pressure cap locking, packing pressure cap right side, and white ring is scraped in left side installation, and is limited with baffle ring, retaining ring to white ring is scraped.
It further says, is also respectively provided with suction attachment, nut and exhaust joint on the cold end shell.
The cold end of low-temperature high-pressure plunger pump, including cold end shell, cylinder sleeve, plunger, valve group, discharge flange, pressure cap, locking screw
Nail, packing assemblies, plunger sealing ring etc., plunger, will be low by the continuous effect of height pressure valve in reciprocatory movement
Hydraulic fluid nitrogen is transformed into high-pressure liquid nitrogen and is discharged；The design of sealing support ring solves plunger and is easy to produce eccentric ask during exercise
Topic reduces the heat of plunger sealing ring and cylinder sleeve friction generation；Plunger sealing ring, the first gasket seal, the second gasket seal will
The area of low pressure of high-pressure area and cold end shell in cylinder sleeve keeps apart, and the liquid nitrogen that low-pressure area circulates is constantly by power end
The heat for heat and the external environment transmitting that friction generates is taken away, so that high-pressure liquid nitrogen will not be because of extraneous heat transfer in cylinder sleeve
And vaporize, to improve stability and the service life of cold end operation；For plunger when low-temperature and high-speed moves back and forth, packing_seal group can be with
Playing the role of sealing liquid nitrogen, the design for blowing white ring can guarantee the ice of plunger and the generation of atmosphere contact area under cryogenic conditions
Frost, impurity will not scratch packing_seal group, guarantee the reliability of sealing；The design of pressure cap and lock-screw can be according to practical feelings
Condition adjusts the first gasket seal and the second gasket seal decrement, so that reaching prevents liquid nitrogen from revealing purpose.
The beneficial effects of the present invention are:
The present invention provides a kind of new structural cold end of low-temperature high-pressure plunger pump, have the advantage that
(1) novel valve block structure, using metal sealing, by the continuous switch of high pressure valve and low pressure valve, by the super of normal pressure
Low temperature liquid nitrogen switchs to high pressure low temperature liquid nitrogen and is discharged, and can satisfy the requirement of high frequency time switch, has pumped (conveying) medium temperature low, defeated
The high feature of pressure out solves the problems, such as that common plunger pump can not pump cryogenic high pressure liquid nitrogen.
(2) cylinder body is provided with the through-hole being connected to shell, and shell is equipped with gas returning port, this part is connected to intracavitary liquid nitrogen and absorbs
The heat of the heat and external transmitting that are generated in plunger operational process, the gas so that liquid nitrogen for protecting pump note intracavitary will not heat up
Change, not only increases pump note ability, and extend the service life of cold end.
(3) all parts of cold end all select low temperature material, ensure that the reliability under -196 DEG C of operating temperatures.
(4) device is without being lubricated cold end plunger, so that operation and maintenance is convenient.
(5) novel plunger movable sealing structure design, ensure that the safety sealed under cryogenic high pressure, reliability.
(6) job requirements of the existing liquid nitrogen pump in pressure break with the operations Intermediate High Pressure such as note, gaslift are met.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural diagram of the present invention；
In figure: 1 is jackscrew, and 2 be clip, and 3 be clip retaining ring, and 4 connect bolt for plunger, and 5 be plunger, and 6 be packing pressure cap,
7 be retaining ring, and 8 be baffle ring, and 9 is scrape white ring, and 10 be support ring, and 11 be pressure ring, and 12 be packing_seal group, and 13 be nut, and 14 be cold
End housing, 15 be cylinder sleeve, and 16 be plunger rides ring, and 17 be plunger sealing ring, and 18 be sealing support ring, and 19 be exhaust joint, 20
It is low pressure valve for low pressure spring, 21,22 be the first gasket seal, and 23 be high pressure valve, and 24 be high pressure valve support ring, and 25 be valve seat,
26 be the second gasket seal, and 27 be low pressure seal circle, and 28 be high pressure spring, and 29 be discharge flange, and 30 be lock-screw, and 31 be pressure
Cap, 32 be pressing plate, and 33 be suction attachment.
Specific embodiment
Embodiment 1:
A kind of cold end of low-temperature high-pressure plunger pump, including cold end shell 14, plunger 5 and cylinder sleeve 15, plunger 5 are arranged in cylinder sleeve 15
Inside, cylinder sleeve 15 is located at the inside of cold end shell 14, and the front end of cold end shell 14 is provided with connection locking device, cold end shell
14 include left and right two interconnected cavity bodies, and the right end of plunger 5 is packed into cylinder sleeve 15, and the left end of plunger 5 passes through left cavity
Body stretches out outside cold end shell 14, and the sealing element around plunger is equipped in left cavity body, includes cylinder sleeve 15, valve group in right cavity body
With discharge flange 29, valve group include valve seat 25, the high pressure valve being installed in valve seat 25 23 and be mounted on cylinder sleeve 15 and valve seat 25 it
Between low pressure valve 21, the center of valve seat 25 is equipped with through-hole, and both ends are equipped with spiral groove, valve seat 25, cylinder sleeve 15 and discharge flange 29
It is compressed by gland；The right end face of cylinder sleeve 15 is provided with spiral groove, offers through-hole on the left end wall of cylinder sleeve 15, logical by this
Hole is connected to cold end shell 14, is provided with gas returning port and inlet on the midfeather of cold end shell 14.
Connection locking device includes that jackscrew 1, clip 2, clip retaining ring 3 connect bolt 4, clip retaining ring 3 and clip 2 with plunger
After being successively inserted in plunger connection bolt 4, the end of plunger connection bolt 4 is connect with plunger 5, and the left side of clip 2 is provided with screw thread,
Screw thread is connect with power end, is locked after connection by jackscrew 1.
Sealing element around plunger includes plunger rides ring 16, plunger sealing ring 17 and plunger sealing support ring 18.
The left intracorporal front end of cavity is provided with packing_seal group 12, and packing_seal group 12 is compressed by pressure ring 11, and by packing
Pressure cap 6 is locked, and assembles support ring 10 on the right side of packing pressure cap 6, and white ring 9 is scraped in left side installation, and with baffle ring 8, retaining ring 7 to scraping white ring 9
Limit.
It is also respectively provided with suction attachment 33, nut 13 and exhaust joint 19 on cold end shell, works as low-temperature high-pressure plunger pump
After cold end is threadedly coupled with power end, nut 13 is tightened, fixed locking effect is played to cold end.
Assemble sequence are as follows: plunger rides ring 16, plunger sealing ring 17, plunger sealing support ring 18 are successively attached to column in order
On plug 5, the plunger 5 that assembly is completed is packed into cylinder sleeve 15；Again by low pressure valve spring 20, low pressure valve 21, the first gasket seal 22, valve
Seat 25, high pressure valve 23, high pressure valve support ring 24, it is whole after being successively assembled on cylinder sleeve 15 to be packed into 14 right chamber of cold end shell；Again will
High pressure valve spring 28, the second gasket seal 26, low pressure seal circle 27, discharge flange 29, pressing plate 32 are sequentially loaded into, and tighten pressure cap
31, and compressed the first gasket seal 22, the second gasket seal 26 in right chamber with lock-screw 30, it prevents from revealing；By packing
Sealing group 12, pressure ring 11 are packed into 14 left side cavity of cold end shell, are tightened with packing pressure cap 6, are assembled support ring on the right side of packing pressure cap 6
10, white ring 9 is scraped in left side installation, and is limited with baffle ring 8, retaining ring 7 to white ring 9 is scraped, and suction attachment 33, exhaust joint 19 are tightened to
On cold end shell 14, after clip retaining ring 3, clip 2 are inserted in plunger connection bolt 4, plunger connection bolt 4 is tightened to plunger 5
On, screw thread is had on the left of clip 2, can be connect with power end, and jackscrew 1 is locked after connection, prevents connection from loosening.
The cold end course of work: when plunger moves downward, low pressure valve is opened at this time, and high pressure valve is closed, and low temperature liquid nitrogen is from suction
Enter connector and enters inner chamber of cylinder block；When plunger moves right, plunger pressurizes to the liquid nitrogen in cylinder sleeve, and low pressure valve is closed at this time, high
Pressure valve is opened, and high-pressure liquid nitrogen is discharged through high pressure valve inner hole from discharge flange；Plunger sealing ring 17 by cylinder sleeve high-pressure liquid nitrogen with
Low pressure liquid nitrogen between cold end shell is kept apart, and in the cold end course of work, has low temperature liquid nitrogen to enter from suction attachment 33 always, from
Exhaust joint 19 flow back into storage tank or emptying, the heat of the heat and external environment transmitting that constantly generate power end friction
Amount is taken away, to guarantee that the low temperature liquid nitrogen of higher-pressure region in whole cylinder body is not influenced by ambient temperature, vaporization is reduced, to improve cold
The working performance at end and service life；Packing_seal group 12, low pressure seal circle 26 keep apart low temperature liquid nitrogen and ambient atmosphere, guarantee
Cryogenic liquid is not revealed；It blows white ring 9 to clean out the impurity, ice, frost on 5 surface of plunger, guarantees plunger 5 in the process of running not
It scratches packing_seal group 12 and reveals.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to any simple modification to the above embodiments in technical spirit of the invention, equivalent variations, guarantor of the invention is each fallen within
Within the scope of shield.
Claims (5)
1. a kind of cold end of low-temperature high-pressure plunger pump, including cold end shell, plunger and cylinder sleeve, the plunger are arranged in cylinder sleeve
Portion, the cylinder sleeve are located at the inside of cold end shell, which is characterized in that the front end of the cold end shell is provided with connection locking
Device, the cold end shell include left and right two interconnected cavity bodies, and the right end of the plunger is packed into the cylinder sleeve
Interior, the left end of the plunger passes through left cavity body and stretches out outside the cold end shell, is equipped in left cavity body around the close of plunger
Sealing, includes cylinder sleeve, valve group and discharge flange in right cavity body, and the valve group includes valve seat, the high pressure that is installed in valve seat
Valve and the low pressure valve being mounted between cylinder sleeve and valve seat, the center of the valve seat are equipped with through-hole, and both ends are equipped with spiral groove, institute
Valve seat, the cylinder sleeve and the discharge flange stated are compressed by gland；The right end face of the cylinder sleeve is provided with spiral groove, described
Through-hole is offered on the left end wall of cylinder sleeve, is connected to by the through-hole with cold end shell, is set on the midfeather of the cold end shell
It is equipped with gas returning port and inlet.
2. cold end of low-temperature high-pressure plunger pump according to claim 1, which is characterized in that the connection locking device includes
Jackscrew, clip, clip retaining ring connect bolt with plunger, and the clip retaining ring is successively inserted in after plunger connects bolt with clip,
The end of plunger connection bolt is connect with plunger, and screw thread is provided on the left of the clip, and the screw thread and power end connect
It connects, is locked after connection by jackscrew.
3. cold end of low-temperature high-pressure plunger pump according to claim 1, which is characterized in that the sealing element around plunger
Support ring is sealed including plunger rides ring, plunger sealing ring and plunger.
4. cold end of low-temperature high-pressure plunger pump according to claim 1, which is characterized in that the intracorporal front end of left cavity
It is provided with packing_seal group, the packing_seal group is compressed by pressure ring, and is locked by packing pressure cap, assembly on the right side of packing pressure cap
Support ring, white ring is scraped in left side installation, and is limited with baffle ring, retaining ring to white ring is scraped.
5. cold end of low-temperature high-pressure plunger pump according to claim 1, which is characterized in that also distinguish on the cold end shell
It is provided with suction attachment, nut and exhaust joint, the nut can guarantee that cold end of low-temperature high-pressure plunger pump and power end connect
When connecing, fixation is locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248753.9A CN109404274A (en) | 2018-10-25 | 2018-10-25 | A kind of cold end of low-temperature high-pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248753.9A CN109404274A (en) | 2018-10-25 | 2018-10-25 | A kind of cold end of low-temperature high-pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404274A true CN109404274A (en) | 2019-03-01 |
Family
ID=65469060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811248753.9A Pending CN109404274A (en) | 2018-10-25 | 2018-10-25 | A kind of cold end of low-temperature high-pressure plunger pump |
Country Status (1)
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| CN (1) | CN109404274A (en) |
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|---|---|---|---|---|
| CN109798233A (en) * | 2019-03-25 | 2019-05-24 | 中盐安徽红四方股份有限公司 | Modified cryogenic liquid pump |
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Application publication date: 20190301 |