CN207018187U - A kind of piston rod assembly, plunger pump cold end and plunger pump - Google Patents
A kind of piston rod assembly, plunger pump cold end and plunger pump Download PDFInfo
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- CN207018187U CN207018187U CN201720856189.3U CN201720856189U CN207018187U CN 207018187 U CN207018187 U CN 207018187U CN 201720856189 U CN201720856189 U CN 201720856189U CN 207018187 U CN207018187 U CN 207018187U
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- piston rod
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- guide sleeve
- cylinder body
- seal component
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Abstract
The utility model discloses the plunger pump cold end and plunger pump of a kind of piston rod assembly and the application piston component, the piston rod assembly, it includes piston rod, guide sleeve, seal assembly and elastic component；The guide sleeve includes front end guide sleeve and end guide sleeve, and the seal assembly includes forward end seal component and end seal component；Front end guide sleeve, forward end seal component, elastic component, end seal component and end guide sleeve are disposed with the front end of the piston rod to end；Front end guide sleeve and end the guide sleeve fixed setting is on the piston rod；The forward end seal component, elastic component and end seal component slippage are set on the piston rod；The elastic component is extruded by forward end seal component and end seal component, and the elastic component makes forward end seal component part compress front end guide sleeve, end seal component is compressed end guide sleeve.The piston component can reduce the abrasion of seal and inboard wall of cylinder block, improve the service life of seal.
Description
Technical field
LNG fields are the utility model is related to, refer in particular to a kind of piston rod assembly, plunger pump cold end and plunger pump.
Background technology
Plunger pump is an important device of hydraulic system.It is moved back and forth by piston rod in cylinder body, makes sealing work
The volume for making cavity volume changes to realize oil suction, force feed.Plunger pump has high rated pressure, compact-sized, efficiency high and stream
The advantages that easy to adjust is measured, is widely used in the occasion that high pressure, big flow and flow need to adjust.
Many seals are provided between existing piston rod and cylinder body, seal is fixedly installed on the piston rod, seal
Contacted with inboard wall of cylinder block, in motion process, seal is easy to wear piston rod, and the service life of seal is shorter.
The content of the invention
The purpose of this utility model is：For above-mentioned problem, there is provided a kind of piston rod assembly and apply the work
The plunger pump cold end and plunger pump of plug assembly, the piston component can reduce the abrasion of seal and inboard wall of cylinder block, improve sealing
The service life of part.
The technical solution adopted in the utility model is as follows：
A kind of piston rod assembly, it includes piston rod, guide sleeve, seal assembly and elastic component；Before the guide sleeve includes
End guide sleeve and end guide sleeve, the seal assembly include forward end seal component and end seal component；The piston rod
Front end guide sleeve, forward end seal component, elastic component, end seal component and end is disposed with front end to end to be oriented to
Set；Front end guide sleeve and end the guide sleeve fixed setting is on the piston rod；Forward end seal component, elastic component and the end
Seal assembly is slidably arranged on piston rod；The elastic component is extruded by forward end seal component and end seal component, the bullet
Property part make forward end seal component part compress front end guide sleeve, make end seal component compress end guide sleeve.
Due to said structure, forward end seal component, elastic component and end seal component slippage are set on the piston rod, sealing
When component rubs with inboard wall of cylinder block, seal assembly can move on the piston rod, change in seal assembly outer rim and cylinder body
The contact surface of wall, make the outer rim uniform wear of seal assembly.And existing seal is fixed on the piston rod, its outer rim and cylinder body
Contact surface can not adjust, therefore, the wear surface of existing seal is concentrated at one, and seal is easily damaged.This reality
With the elastic component in new, reset response is played, seal assembly is maintained at home position as far as possible in the course of the work, avoids
Certain is deposited in after seal assembly movement, and influences sealing effectiveness.
Further, the seal assembly is made up of some sealing rings.
Further, the elastic component is butterfly shell fragment or spring.
Further, the piston, which is caught up with also to slide, is provided with spacer sleeve, is spaced and is set on elastic component and end is close
Between sealing assembly, the spacer sleeve is compressed by elastic component and end seal component.
Further, be additionally provided with the piston rod and scrape white circle, it is described scrape frost circle be arranged on end seal component after
End, the frost circle of scraping are fixedly installed on the piston rod by swivel nut.
Further, the piston rod includes shaft and head, and the head is arranged on the front end of shaft, the head
Diameter be more than shaft diameter, the guide sleeve, seal assembly, elastic component, spacer sleeve, scrape frost circle be arranged on shaft；Institute
State and end support ring is additionally provided between end seal component and spacer sleeve, also set between forward end seal component and front end guide sleeve
It is equipped with front support ring.Wherein front support ring makes shaft concordant with head with end support ring；In work process, make shaft
All the time it is in poised state.
Further, the nose to end is disposed with guide ring and some head sealing rings；The head
On offer some grooves, be disposed therein guide ring and head sealing ring.
The invention also discloses a kind of plunger pump cold end, and it includes cylinder body, cooling chamber and above-mentioned piston rod assembly, institute
Piston rod assembly is stated to be arranged in cylinder body, the liquid feeding end of the cylinder body is arranged in cooling chamber, be provided with the cooling chamber into
Liquid mouth；Cooling Holes are offered on the outer wall of cylinder block, the Cooling Holes make inner chamber of cylinder block be connected with cooling chamber.
Further, vacuum chamber is additionally provided with outside the cooling chamber, the vacuum chamber wraps up whole cooling chamber, described true
Vacuum nozzle is provided with cavity.
The invention also discloses a kind of plunger pump, its Packet driven device, motor, cylinder body and above-mentioned piston rod group
Part, the piston rod are arranged in cylinder body, and the end of the piston rod is connected with drive device, and the drive device, which drives, also fills in
Bar does linear reciprocating motion in cylinder body, and the drive device is connected with motor, and the motor carries for drive device
For power.
In summary, by adopting the above-described technical solution, the beneficial effects of the utility model are：
In the utility model, seal assembly is slidably arranged on piston rod, when seal assembly rubs with inboard wall of cylinder block,
Seal assembly can move on the piston rod, change the contact surface of seal assembly outer rim and inboard wall of cylinder block, make the outer of seal assembly
Edge uniform wear.And then improve the service life of seal.
Plunger pump cold end of the present utility model and plunger pump can improve the use birthday noodle of seal simultaneously, and avoid liquid
Vaporization of the natural gas in transportation, reduce piston rod and frictional heat caused by cylinder body part.
Brief description of the drawings
Fig. 1 is piston rod assembly structure chart；
Fig. 2 is plunger pump cold end structure figure.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Embodiment 1：
The utility model discloses a kind of piston rod assembly, and it includes piston rod, guide sleeve, seal assembly and elastic component 5；
The guide sleeve includes front end guide sleeve 3 and end guide sleeve 8, and the seal assembly includes forward end seal component 4 and end is close
Sealing assembly；Front end guide sleeve 3, forward end seal component 4, elastic component 5, end are disposed with the front end of the piston rod to end
Hold seal assembly 7 and end guide sleeve 8；The front end guide sleeve 3 and end guide sleeve 8 are fixedly installed on the piston rod；It is described
Forward end seal component 4, elastic component 5 and end seal component 7 are slidably arranged on piston rod；The elastic component 5 is by forward end seal
Component 4 and end seal component 7 extrude, and the elastic component 5 makes 4 compression front end guide sleeves 3 of forward end seal component, makes end close
Sealing assembly 7 compresses end guide sleeve 8.
The seal assembly is made up of some sealing rings.Each sealing ring contacts with each other by elastic component 5 and guide sleeve compression.
The elastic component is butterfly shell fragment or spring；In the present embodiment, elastic component 5 is butterfly shell fragment.
The piston, which is caught up with also to slide, is provided with spacer sleeve 6, and institute's spacer sleeve 6 is arranged on elastic component 5 and end seal component 7
Between, the spacer sleeve 6 is compressed by elastic component 5 and end seal component 7.
It is additionally provided with the piston rod and scrapes frost circle 9, the rear end scraped frost circle 9 and be arranged on end seal component 7 is described
Frost circle 9 is scraped to be fixedly installed on the piston rod by swivel nut 10.
The piston rod includes shaft and head, and the head is arranged on the front end of shaft, and the diameter of the head is more than
The diameter of shaft, the guide sleeve, seal assembly, elastic component 5, spacer sleeve 6, scrape frost circle and 9 be arranged on shaft.The end
End support ring 19 is additionally provided between seal assembly 7 and spacer sleeve 6, is also set between forward end seal component 4 and front end guide sleeve 3
It is equipped with front support ring 18.
The nose to end is disposed with guide ring 1 and some head sealing rings 2；Offered in the head
Some grooves, it is disposed therein guide ring 1 and head sealing ring 2.
Embodiment 2
The invention also discloses a kind of plunger pump cold end, and it includes cylinder body 11, cooling chamber 14 and above-mentioned piston rod group
Part, the piston rod assembly are set in cylinder body 11, and the liquid feeding end of the cylinder body 11 is arranged in cooling chamber 14, the cooling chamber 14
On be provided with inlet；Cooling Holes 13 are offered on the outer wall of cylinder body 11, the Cooling Holes 13 make the inner chamber of cylinder body 11 and cooling
Chamber 14 connects.
Vacuum chamber 12 is additionally provided with outside the cooling chamber 14, the vacuum chamber 12 wraps up whole cooling chamber 14, described true
Vacuum nozzle is provided with cavity 12.
In LNG fields, the liquified natural gas of low pressure, enter plunger pump cylinder body from the low pressure inlet in plunger pump cold end
After in 11, low-pressure liquid natural gas is after plunger pump piston compresses, from the high pressure liquid outlet discharge on plunger pump cylinder body 11.It is living
Plug is moved back and forth in cylinder body 11, and heat can be produced after being rubbed with the inwall of cylinder body 11.And the boiling point of liquified natural gas is relatively low, one
As at -196 degrees Celsius.Heat caused by friction is easy to vaporize liquified natural gas.
Due to said structure, liquified natural gas is after inlet enters cooling chamber 14, a part of liquid in cooling chamber 14
Natural gas enters in cylinder body 11 in the presence of the inner piston rod of cylinder body 11 from the liquid feeding end of cylinder body 11, after piston rod acts on, becomes
Discharged into high-pressure liquid natural gas from the high pressure liquid outlet of cylinder body 11；Another part liquified natural gas in cooling chamber 14 is then from cylinder
Cooling Holes 13 on body 11 are flowed into cylinder body 11.Due to wall friction in piston rod and cylinder body 11, substantial amounts of heat can be produced, if heat
Biography is delivered at high pressure liquid outlet, the liquified natural gas vaporization that will discharge high pressure liquid outlet.In order to avoid vaporizing, low temperature
Liquified natural gas is flowed into cylinder body 11 from Cooling Holes 13, is cooled down the shaft and the inwall of cylinder body 11 of piston rod, is avoided caused by friction
Heat transfer avoids the generation of vaporization phenomenon at high pressure liquid outlet.
Meanwhile it is improved using the piston rod assembly, the service life of seal.
Embodiment 3
The invention also discloses a kind of plunger pump, its Packet driven device 16, motor 17, cylinder body 11 and above-mentioned work
Stopper rod component, the piston rod are arranged in cylinder body 11, and the end of the piston rod is connected with drive device 16, the driving dress
Put 16 drives and go back stopper rod and linear reciprocating motion is done in cylinder body 11, the drive device 16 is connected with motor 17, the drive
Dynamic motor 17 is that drive device 16 provides power.The output shaft of motor 17 directly can be connected with drive device 16, or
It is connected by way of V belt translation.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
- A kind of 1. piston rod assembly, it is characterised in that：It includes piston rod, guide sleeve, seal assembly and elastic component（5）；It is described Guide sleeve includes front end guide sleeve（3）With end guide sleeve（8）, the seal assembly includes forward end seal component（4）And end Seal assembly（7）；Front end guide sleeve is disposed with the front end of the piston rod to end（3）, forward end seal component（4）、 Elastic component（5）, end seal component（7）With end guide sleeve（8）；The front end guide sleeve（3）With end guide sleeve（8）It is fixed Set on the piston rod；The forward end seal component（4）, elastic component（5）With end seal component（7）It is slidably arranged in piston rod On；The elastic component（5）By forward end seal component（4）With end seal component（7）Extruding, the elastic component（5）Make front end close Sealing assembly（4）Part compresses front end guide sleeve（3）, make end seal component（7）Compress end guide sleeve（8）.
- A kind of 2. piston rod assembly according to claim 1, it is characterised in that：The seal assembly is by some sealing ring structures Into.
- A kind of 3. piston rod assembly according to claim 2, it is characterised in that：The elastic component（5）For butterfly shell fragment or Spring.
- A kind of 4. piston rod assembly according to claim 3, it is characterised in that：The piston catch up with also slide be provided between Spacer（6）, institute's spacer sleeve（6）It is arranged on elastic component（5）With end seal component（7）Between, the spacer sleeve（6）By elastic component （5）With end seal component（7）Compress.
- A kind of 5. piston rod assembly according to claim 4, it is characterised in that：It is additionally provided with the piston rod and scrapes white circle （9）, it is described to scrape white circle（9）It is arranged on end seal component（7）Rear end, it is described to scrape white circle（9）Pass through swivel nut（10）Fixation is set Put on the piston rod.
- A kind of 6. piston rod assembly according to one of claim 1 to 5, it is characterised in that：The piston rod includes shaft And head, the head are arranged on the front end of shaft, the diameter of the head is more than the diameter of shaft, the guide sleeve, sealing Component, elastic component（5）, spacer sleeve（6）, scrape white circle（9）It is arranged on shaft；The end seal component（7）And spacer sleeve （6）Between be additionally provided with end support ring（19）, forward end seal component（4）With front end guide sleeve（3）Between be additionally provided with front end Support ring（18）.
- A kind of 7. piston rod assembly according to claim 6, it is characterised in that：The nose to end is set gradually There is guide ring（1）With some head sealing rings（2）；Some grooves are offered in the head, make guide ring（1）Sealed with head Circle（2）It is disposed therein.
- 8. a kind of plunger pump cold end, it includes cylinder body（11）, cooling chamber（14）With the work described in one of the claims 1 to 7 Stopper rod component, the piston rod assembly are arranged on cylinder body（11）It is interior, it is characterised in that：The cylinder body（11）Liquid feeding end be arranged on Cooling chamber（14）It is interior, the cooling chamber（14）On be provided with inlet；The cylinder body（11）Cooling Holes (13) are offered on outer wall, The Cooling Holes (13) make cylinder body（11）Inner chamber and cooling chamber（14）Connection.
- A kind of 9. plunger pump cold end according to claim 8, it is characterised in that：The cooling chamber（14）It is outer to be additionally provided with very Cavity (12), the vacuum chamber (12) is by whole cooling chamber（14）Wrap up, vacuum nozzle is provided with the vacuum chamber (12).
- 10. a kind of plunger pump, its Packet driven device (16), motor (17), cylinder body（11）With the claims 1 to 7 it Piston rod assembly described in one, it is characterised in that：The piston rod is arranged on cylinder body（11）It is interior, the end of the piston rod and drive Dynamic device (16) is connected, and the drive device (16) drives and goes back stopper rod in cylinder body（11）Inside do linear reciprocating motion, the driving Device (16) is connected with motor (17), and the motor (17) is that drive device (16) provides power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720856189.3U CN207018187U (en) | 2017-07-14 | 2017-07-14 | A kind of piston rod assembly, plunger pump cold end and plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720856189.3U CN207018187U (en) | 2017-07-14 | 2017-07-14 | A kind of piston rod assembly, plunger pump cold end and plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207018187U true CN207018187U (en) | 2018-02-16 |
Family
ID=61482992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720856189.3U Active CN207018187U (en) | 2017-07-14 | 2017-07-14 | A kind of piston rod assembly, plunger pump cold end and plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207018187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404274A (en) * | 2018-10-25 | 2019-03-01 | 烟台杰瑞石油装备技术有限公司 | A kind of cold end of low-temperature high-pressure plunger pump |
| CN110578496A (en) * | 2019-09-19 | 2019-12-17 | 梅小军 | low-friction well head oil pumping device |
-
2017
- 2017-07-14 CN CN201720856189.3U patent/CN207018187U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404274A (en) * | 2018-10-25 | 2019-03-01 | 烟台杰瑞石油装备技术有限公司 | A kind of cold end of low-temperature high-pressure plunger pump |
| CN110578496A (en) * | 2019-09-19 | 2019-12-17 | 梅小军 | low-friction well head oil pumping device |
| CN110578496B (en) * | 2019-09-19 | 2021-12-31 | 山东创新石油技术有限公司 | Low-friction well head oil pumping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 610041 No.3, floor 11, building 6, no.599, shijicheng South Road, Chengdu high tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu City, Sichuan Province Patentee after: Houpu clean energy Co.,Ltd. Address before: 610041, No. 11, No. 6, No. 599, No. 3 South City Road, Chengdu hi tech Development Zone, Sichuan Patentee before: CHENGDU HUAQI HOUPU HOLDING Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.3, 11th floor, building 6, no.599, shijicheng South Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee after: Houpu clean energy (Group) Co.,Ltd. Address before: No.3, 11th floor, building 6, no.599, shijicheng South Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee before: Houpu clean energy Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |