CN211103739U - Hydraulic puller for plunger pump valve seat - Google Patents
Hydraulic puller for plunger pump valve seat Download PDFInfo
- Publication number
- CN211103739U CN211103739U CN201921511355.1U CN201921511355U CN211103739U CN 211103739 U CN211103739 U CN 211103739U CN 201921511355 U CN201921511355 U CN 201921511355U CN 211103739 U CN211103739 U CN 211103739U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- plunger pump
- hydraulic cylinder
- piston rod
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model provides a ware is drawn to plunger pump valve seat hydraulic pressure, include: the device comprises a hydraulic cylinder, a drawing head, a pump station and a safety valve, wherein a piston disc is assembled in the hydraulic cylinder in a sliding mode, a piston rod is connected onto the piston disc, and the outer end of the piston rod extends out of the hydraulic cylinder; the drawing head is connected to the outer end of the piston rod, and pawls are arranged on two sides of the drawing head; the pump station is communicated with the rodless cavity and the rod cavity of the hydraulic cylinder through a valve body and a pipeline; the safety valve is arranged in the hydraulic cylinder, the inlet of the safety valve is communicated with the rod cavity, and the outlet of the safety valve is communicated with the rodless cavity. The utility model discloses a plunger pump valve seat hydraulic pressure puller pulls the work through pneumatic cylinder drive piston rod to the valve seat, and the piston rod of pneumatic cylinder stretches out and withdrawal speed is fast, can operate alone, can save a large amount of manpowers, improves work efficiency. The utility model discloses a plunger pump valve seat hydraulic pressure puller pulls the work through pneumatic cylinder drive piston rod to the valve seat, and the piston rod of pneumatic cylinder stretches out and withdrawal speed is fast, can operate alone, can save a large amount of manpowers, improves work efficiency.
Description
Technical Field
The utility model belongs to the technical field of the oil field instrument, concretely relates to plunger pump valve seat hydraulic pressure puller.
Background
In recent years, large-scale fracturing construction gradually becomes a normal state, and has the characteristics of large discharge capacity, large sand quantity, large liquid quantity, complex liquid system and long construction time, so that the loss of the valve seat of the plunger pump of the fracturing truck is increased greatly.
Usually, the construction pressure of the Changqing area is 50-70 Mpa, and a valve seat needs to be replaced by a pump for every two to three sections of sand fracturing. According to statistics, each horizontal well (12 sections, construction displacement 8 m)3Min) the number of the valve seats to be replaced in the fracturing construction is all 150-Above, the most even 300 valve seats can be replaced in one well, especially the number of the cluster well sites needs to be replaced is more, and the valve seat replacement becomes a heavy work.
At present, the common method for replacing the valve seat is as follows: the manual booster pump is matched with the pressure plate and the screw rod, 2-3 persons are needed for matching each time when the valve seat is replaced, the time is 10-15min, the main time is 2min when the assembly is carried and assembled, the screw rod is tightly matched with the pressure plate, 24 pipe clamps are needed to be fastened, the time is 5min, and the manual booster pump is used for pressurizing for 2-3 min. The pump is examined once per 3 layers, if the valve seat needs to be replaced, 60-90min is needed, and more conventional puller assembly components are needed to be carried, so that the traditional operation method is high in labor intensity, low in working efficiency, prone to cause the injury consequence of a tool clamp when an operator is matched with the valve seat, and not in line with the safe operation requirement.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is an object of the present invention to provide a plunger pump valve seat hydraulic puller for overcoming the above problems or at least partially solving or alleviating the above problems.
The utility model provides a ware is drawn to plunger pump valve seat hydraulic pressure, include:
the hydraulic cylinder is internally provided with a piston disc in a sliding way, the piston disc is connected with a piston rod, and the outer end of the piston rod extends out of the hydraulic cylinder;
the drawing head is connected to the outer end of the piston rod, and pawls are arranged on two sides of the drawing head;
the pump station is communicated with the rodless cavity and the rod cavity of the hydraulic cylinder through a valve body and a pipeline;
the safety valve is arranged in the hydraulic cylinder, the inlet of the safety valve is communicated with the rod cavity, and the outlet of the safety valve is communicated with the rodless cavity.
The utility model discloses optional characteristic below still having.
Optionally, the relief valve is provided on the piston disc.
Optionally, the safety valve includes a pressure channel and a pressure relief channel disposed on the piston disc, a port of the pressure channel is located on one side of the piston disc facing the rod chamber, a port of the pressure relief channel is located on one side of the piston disc facing the rodless chamber, a diameter of the pressure relief channel is larger than a diameter of the pressure channel, and a ball plug, a spring and an inner nut are sequentially assembled in the pressure relief channel from inside to outside.
Optionally, the pump station is a hand-held electric pressure test pump.
Optionally, a centering retaining ring is arranged at the front end of the hydraulic cylinder, and the centering retaining ring is matched with a cylinder opening on the plunger pump.
Optionally, a pair of handles is provided on the side wall of the cylinder body of the hydraulic cylinder.
The utility model discloses a plunger pump valve seat hydraulic pressure puller stretches out or contracts through the piston rod on pump station and the pneumatic cylinder drive piston dish, makes the puller on the piston rod can stretch into in the plunger pump and catch on the valve seat through the pawl and take out the valve seat from the plunger pump, changes the valve seat. Further, the utility model discloses a plunger pump valve seat hydraulic pressure puller draws work to the valve seat through pneumatic cylinder drive piston rod, and the piston rod of pneumatic cylinder stretches out and withdrawal speed is fast, can operate alone, can save a large amount of manpowers, improves work efficiency.
Drawings
Fig. 1 is a schematic view of an overall structure of an embodiment of a plunger pump valve seat hydraulic puller of the present invention;
fig. 2 is a schematic view of the internal structure of the hydraulic cylinder in fig. 1.
In the above figures: 1, a hydraulic cylinder; 2 a piston disc; 201 pressure channel; 202 a pressure relief passage; 3 a piston rod; 4, drawing the head; 5 a pawl; 6, a pump station; 7, blocking the ball; 8, a spring; 9, an inner nut; 10, righting the retainer ring; 11 a handle.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Detailed Description
Example 1
Referring to fig. 1 and 2, an embodiment of the present invention provides a plunger pump valve seat hydraulic puller, including: the device comprises a hydraulic cylinder 1, a drawing head 4, a pump station 6 and a safety valve, wherein a piston disc 2 is assembled in the hydraulic cylinder 1 in a sliding mode, a piston rod 3 is connected onto the piston disc 2, and the outer end of the piston rod 3 extends out of the hydraulic cylinder 1; the drawing head 4 is connected to the outer end of the piston rod 3, and pawls 5 are arranged on two sides of the drawing head 4; the pump station 6 is communicated with the rodless cavity and the rod cavity of the hydraulic cylinder 1 through a valve body and a pipeline; the safety valve is arranged in the hydraulic cylinder 1, the inlet of the safety valve is communicated with the rod cavity, and the outlet of the safety valve is communicated with the rodless cavity.
When the pump station 6 is controlled to supply oil to the rodless cavity of the hydraulic cylinder 1, the piston rod 3 extends out of the hydraulic cylinder 1, when the oil is supplied to the rod cavity of the hydraulic cylinder 1, the piston rod 3 retracts into the hydraulic cylinder 1, the pulling head 4 is connected to the tail end of the piston rod 3 through threads, the piston rod 3 in the hydraulic cylinder 1 is controlled to extend out or retract through the pump station 6, the pulling head 4 on the piston rod 3 can stretch into the plunger pump to hook the valve seat through the pawl 5, the valve seat is taken out of the plunger pump, and the valve seat is replaced.
Example 2
Referring to fig. 2, on the basis of embodiment 1, a relief valve is provided on the piston disc 2.
The piston disc 2 separates the rod cavity and the rodless cavity of the hydraulic cylinder 1, the safety valve is arranged on the piston disc 2, high-pressure hydraulic oil in the rod cavity can be directly released into the rodless cavity, a pressure release pipeline does not need to be connected to the outer side of the hydraulic cylinder 1, and construction safety of workers is guaranteed.
Example 3
Referring to fig. 2, on the basis of embodiment 2, the safety valve comprises a pressure channel 201 and a pressure relief channel 202 which are arranged on a piston disc 2, wherein a port of the pressure channel 201 is positioned on one side of the piston disc 2 facing a rod cavity, a port of the pressure relief channel 202 is positioned on one side of the piston disc 2 facing a rodless cavity, the diameter of the pressure relief channel 202 is larger than that of the pressure channel 201, and a blocking ball 7, a spring 8 and an inner nut 9 are sequentially assembled in the pressure relief channel 202.
The piston disc 2 is provided with a pressure channel 201 and a pressure relief channel 202, the pressure relief channel 202 is internally provided with a blocking ball 7 and a spring 8, the internal nut 9 is in threaded fit with the pressure relief channel 202 to block the blocking ball 7 and the spring 8 in the pressure relief channel 202, when the pulling head 4 on the piston rod 3 hooks the valve seat through the pawl 5 to pull the valve seat outwards, the oil pump pumps hydraulic oil into the rod cavity of the hydraulic cylinder 1 to improve the pressure to push the piston disc 2 and the piston rod 3 to retract, the hydraulic oil in the rod cavity transmits the pressure to the blocking ball 7 through the pressure channel 201 on the piston disc 2, when the pressure in the rod cavity exceeds the preset pressure relief pressure, the blocking ball 7 overcomes the pressure of the spring 8 to open the pressure relief channel 202, and the pressure in the rod cavity is released into the rodless cavity.
Example 4
Referring to fig. 1, in the embodiment 1, the pumping station 6 is a portable electric pressure test pump.
The electric pressure test pump can generate pulling force required by separation of the valve seat and the hydraulic end by pressurizing within 2-5 seconds, and meanwhile, for convenience and rapidness in field use, a portable electric pressure test pump is adopted.
Example 5
Referring to fig. 1, on the basis of embodiment 1, a centering check ring 10 is arranged at the front end of a hydraulic cylinder 1, and the centering check ring 10 is matched with a cylinder port on a plunger pump.
The centering retainer ring 10 is fixed at the front end of the hydraulic cylinder 1, surrounds the periphery of the piston rod 3, can extend into the cylinder opening of the plunger pump and be matched with the cylinder opening, and can ensure that the piston rod 3 is positioned at the axis position of the cylinder opening of the plunger pump, so that the drawing head 4 can directly penetrate through the valve seat.
Example 6
Referring to fig. 1, in embodiment 1, a pair of handles 11 are provided on the side wall of the cylinder body of the hydraulic cylinder 1.
The handle 11 symmetry sets up on the lateral wall of pneumatic cylinder 1, makes things convenient for the staff to operate and carry equipment in the use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (6)
1. The utility model provides a ware is drawn to plunger pump valve seat hydraulic pressure which characterized in that includes:
the hydraulic cylinder (1) is internally provided with a piston disc (2) in a sliding way, the piston disc (2) is connected with a piston rod (3), and the outer end of the piston rod (3) extends out of the hydraulic cylinder (1);
the drawing head (4) is connected to the outer end of the piston rod (3), and pawls (5) are arranged on two sides of the drawing head (4);
the pump station (6) is communicated with the rodless cavity and the rod cavity of the hydraulic cylinder (1) through a valve body and a pipeline;
the safety valve is arranged in the hydraulic cylinder (1), the inlet of the safety valve is communicated with the rod cavity, and the outlet of the safety valve is communicated with the rodless cavity.
2. Plunger pump valve seat hydraulic puller according to claim 1, characterized in that said safety valve is provided on said piston disc (2).
3. The plunger pump valve seat hydraulic puller according to claim 2, characterized in that the safety valve comprises a pressure channel (201) and a pressure relief channel (202) which are arranged on the piston disc (2), the port of the pressure channel (201) is positioned on the side of the piston disc (2) facing the rod cavity, the port of the pressure relief channel (202) is positioned on the side of the piston disc (2) facing the rodless cavity, the diameter of the pressure relief channel (202) is larger than that of the pressure channel (201), and a blocking ball (7), a spring (8) and an internal nut (9) are sequentially assembled in the pressure relief channel (202).
4. The plunger pump valve hydraulic puller according to claim 1, wherein the pump station (6) is a hand-held electric pressure test pump.
5. The plunger pump valve seat hydraulic puller according to claim 1, wherein a centering check ring (10) is arranged at the front end of the hydraulic cylinder (1), and the centering check ring (10) is matched with a cylinder opening on the plunger pump.
6. Plunger pump valve hydraulic puller according to claim 1, characterized in that a pair of handles (11) is provided on the side wall of the cylinder body of the hydraulic cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921511355.1U CN211103739U (en) | 2019-09-11 | 2019-09-11 | Hydraulic puller for plunger pump valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921511355.1U CN211103739U (en) | 2019-09-11 | 2019-09-11 | Hydraulic puller for plunger pump valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211103739U true CN211103739U (en) | 2020-07-28 |
Family
ID=71694157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921511355.1U Active CN211103739U (en) | 2019-09-11 | 2019-09-11 | Hydraulic puller for plunger pump valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211103739U (en) |
-
2019
- 2019-09-11 CN CN201921511355.1U patent/CN211103739U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120024521A1 (en) | Hydraulic lubricator for use at a wellhead | |
| CN203939790U (en) | The reciprocal supercharging device of twin-tub | |
| CN211103739U (en) | Hydraulic puller for plunger pump valve seat | |
| CN108687711A (en) | A kind of mining bracket hydraulic pin remover | |
| CN107542637B (en) | Manual and pedal dual-purpose hydraulic pump | |
| CN109630372B (en) | Novel ultrahigh-pressure pilot-operated hydraulic manual pump | |
| CN209579426U (en) | A kind of slush pump pulls out valve device | |
| CN201756925U (en) | Safety polished rod clip for pumping unit well | |
| CN207509137U (en) | A kind of throttle orifice pipe hydraulic pressure drawer | |
| CN211103738U (en) | Plunger pump valve seat puller | |
| CN204061075U (en) | A kind of air-driven hydraulic pump | |
| CN110605682A (en) | Plunger pump valve seat puller | |
| CN209761647U (en) | Novel ultrahigh pressure pilot hydraulic manual pump | |
| CN205200963U (en) | Tool for drawing valve seat | |
| CN203603668U (en) | Hydraulic type radar cabin opening device | |
| CN202877821U (en) | Novel hydraulic valve drawing device | |
| CN204646826U (en) | A kind of hydraulic system of hydraulic test bench | |
| CN115446772B (en) | Valve seat extractor | |
| CN206862783U (en) | A kind of in-situ compressor with backplate | |
| US6079956A (en) | Multi-stage hydraulic pump | |
| CN202910549U (en) | Valve seat pulling device | |
| CN211314686U (en) | Portable supercharging device for hydraulic support pulling shaft | |
| CN103935929B (en) | Jam-on type high-mobility, multipurpose, wheeled vehicle draws ejection device | |
| CN210660800U (en) | Combination valve and hydraulic tool | |
| CN203404035U (en) | Hand-operated vacuum pumping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201027 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: Room 1203, Changqing building, xinglongyuan community, Changqing, Central District, Xi'an City, Shaanxi Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |