A plunger pump head servicing tool

Abstract

The utility model discloses a plunger pump head maintenance tool, including screw rod mechanism, the righting disc mechanism of setting on the screw rod mechanism, the adjusting nut mechanism of setting on the screw rod mechanism behind the righting disc mechanism, the spacing pin member of detachable connection on the righting disc mechanism, the push -and -pull mechanism of setting on the screw rod mechanism before the righting disc mechanism, the spacing nut member of screw connection on the screw rod mechanism, the connector member of screw connection on the front end of screw rod mechanism, the traction head member of screw connection on the front end of connector member. The utility model can easily and conveniently dismantle valve seat and spring seat, also can easily and conveniently install spring seat to pump head liquid jar, saves time and labour when maintenance operation, is not easy to damage the plunger pump, is not easy to make maintenance personnel be injured, can improve maintenance efficiency, reduce the labor intensity of maintenance personnel, reduce the potential safety hazard. The utility model is suitable for using when dismantling plunger pump head valve seat and spring seat, installing spring seat.

Description

Technical Field

[0001] This utility model relates to a plunger pump repair tool, specifically a plunger pump head repair tool. Background Technology

[0002] Oilfields using water injection typically employ plunger pumps to pressurize wastewater from the oilfield and inject it into the formation to increase formation pressure and maintain well production.

[0003] The existing plunger pump head includes a pump head cylinder, a valve seat mounted inside the pump head cylinder, and a spring seat mounted inside the pump head cylinder. Because the injected wastewater is corrosive, it easily corrodes and damages the valve seat and spring seat in the plunger pump head, severely affecting the pumping efficiency. In this case, it is necessary to repair and replace the valve seat and spring seat. During the repair and replacement process, the damaged valve seat and spring seat must first be disassembled, and then the new valve seat and spring seat must be installed into the plunger pump. Currently, when disassembling the valve seat, a pry bar is used to forcefully pry it off. This method is time-consuming and laborious, and the pry bar can easily damage the plunger pump head and injure maintenance personnel, posing a safety hazard. When disassembling the spring seat, a round tube is first inserted into the pump head cylinder to hold the spring seat in place, and then a sledgehammer is used to strike the top of the tube until the spring seat is removed. This method is also time-consuming and laborious, easily damages the plunger pump head, and can injure the maintenance personnel's hands, posing a safety hazard. When installing the spring seat, a copper rod is used to symmetrically strike it. Due to the small space in the plunger assembly box, the striking operation is limited, making it easy to misalign and jam the spring seat during installation, requiring disassembly and reinstallation. This method is also time-consuming and laborious, easily damages the plunger pump head, and poses a safety hazard.

[0004] In summary, currently, disassembling valve seats and spring seats and installing spring seats requires a variety of tools, and the operation is both time-consuming and costly. It can easily damage the plunger pump and injure maintenance personnel, which will seriously affect maintenance efficiency, increase the labor intensity of maintenance personnel, and pose significant safety hazards. Summary of the Invention

[0005] To address the aforementioned shortcomings in the existing technology, this utility model aims to provide a plunger pump head repair tool to improve repair efficiency, reduce the labor intensity of repair personnel, and reduce safety hazards.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a plunger pump head repair tool, comprising a screw mechanism, a centering disc mechanism sleeved on the screw mechanism and fixedly connected to the valve seat clamping flange bolt component in the plunger pump head, an adjusting nut mechanism threadedly connected to the screw mechanism and located behind the centering disc mechanism, a limiting pin component detachably connected to the centering disc mechanism and capable of limiting the adjusting nut mechanism, a push-pull mechanism sleeved on the screw mechanism and located in front of the centering disc mechanism, a limiting nut component threadedly connected to the screw mechanism and pressing against the front end of the push-pull mechanism, a connecting head component threadedly connected to the front end of the screw mechanism, and a traction head component threadedly connected to the front end of the connecting head component and capable of being threadedly connected to the valve seat in the plunger pump head.

[0007] As a limitation of this utility model, the screw mechanism includes a first screw and a second screw fixed at the rear end of the first screw, wherein the diameter of the first screw is smaller than the diameter of the second screw.

[0008] As a further limitation of this utility model, the screw mechanism also includes a hexagonal block fixed to the end of the second screw.

[0009] As a further definition of this utility model, the centering disc mechanism includes a stepped disc-shaped component and multiple through holes provided on the stepped disc-shaped component that are adapted to the valve seat clamping flange bolt component in the plunger pump head, and the multiple valve seat clamping flange bolt components can be correspondingly inserted into the multiple through holes.

[0010] As a further limitation of this utility model, the adjusting nut mechanism includes an adjusting nut body and two first operating handles that are fixedly mounted on the side wall of the adjusting nut body.

[0011] As another limitation of this utility model, the push-pull mechanism includes a disc-shaped component.

[0012] As a further limitation of this utility model, the limiting nut component is a round nut.

[0013] As a further limitation of this utility model, the connector component adopts a hexagonal nut.

[0014] As a further limitation of this utility model, the limiting pin component includes a pin body, a threaded post fixed to the front end of the pin body, and a second operating handle fixed to the rear end of the pin body.

[0015] As a third limitation of this utility model, the traction head component includes a first connecting threaded rod threadedly connected to the front end of the connecting head component and a second connecting threaded rod fixed to the front end of the first connecting threaded rod and threadedly connected to the threaded hole on the valve seat in the plunger pump head.

[0016] By adopting the above-mentioned technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows: This utility model adopts a structure combining a screw mechanism, a centralizing disc mechanism, an adjusting nut mechanism, a limiting pin component, a push-pull mechanism, a connecting head component, and a traction head component. When using this utility model to disassemble the valve seat, insert the utility model into the pump head cylinder and connect the traction head component to the valve seat. Fix the centralizing disc mechanism to the pump head cylinder, remove the limiting pin component, and then rotate the adjusting nut mechanism. While rotating the adjusting nut mechanism, the screw mechanism will move away from the valve seat. Continuing to rotate the nut mechanism will disassemble the valve seat. When using this utility model to disassemble the spring seat, insert the utility model into the pump head cylinder and fix the centralizing disc mechanism to the pump head cylinder. An upper limit pin is installed on the pump head cylinder. Rotating the screw mechanism drives a push-pull mechanism to push the spring seat out of its mounting position. When installing the spring seat using this invention, the screw mechanism moves to pull the spring seat into its mounting position via the push-pull mechanism. Compared to existing technologies, this invention eliminates the need for multiple tools, requiring only one tool to easily and conveniently disassemble the valve seat and spring seat, and easily install the spring seat into the pump head cylinder. Maintenance operations are time-saving and labor-saving, less likely to damage the plunger pump, and less likely to injure maintenance personnel. It significantly improves maintenance efficiency, reduces the labor intensity of maintenance personnel, and reduces safety hazards. This invention is suitable for disassembling the valve seat and spring seat in the plunger pump head and for installing the spring seat. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a disassembly diagram of an embodiment of the present utility model; In the diagram: 1. Screw mechanism; 2. Large disc; 3. Small disc; 4. Through hole; 5. Adjusting nut body; 6. First operating handle; 7. Push-pull mechanism; 8. Limiting nut component; 9. Connecting head component; 10. Traction head component. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] Example 1: A plunger pump head repair tool like Figure 1 , Figure 2As shown, this embodiment includes a screw mechanism 1, a centralizing disc mechanism sleeved on the screw mechanism 1 and fixedly connected to the valve seat clamping flange bolt component in the plunger pump head, an adjusting nut mechanism threadedly connected to the screw mechanism 1 and located behind the centralizing disc mechanism, a limiting pin component detachably connected to the centralizing disc mechanism and capable of limiting the adjusting nut mechanism, a push-pull mechanism 7 sleeved on the screw mechanism 1 and located in front of the centralizing disc mechanism, a limiting nut component 8 threadedly connected to the screw mechanism 1 and pressing against the front end of the push-pull mechanism 7, a connecting head component 9 threadedly connected to the front end of the screw mechanism 1, and a traction head component 10 threadedly connected to the front end of the connecting head component 9 and capable of being threadedly connected to the valve seat in the plunger pump head. The limiting nut component 8 is a round nut, and the connecting head component 9 is a hexagonal nut.

[0021] The screw mechanism 1 includes a first screw, a second screw fixed to the rear end of the first screw, and a hexagonal block fixed to the end of the second screw, wherein the diameter of the first screw is smaller than the diameter of the second screw. Specifically, in this embodiment, the hexagonal block is adapted to an existing electric wrench, allowing the screw mechanism 1 to rotate using an electric wrench.

[0022] The centering disc mechanism includes a stepped disc-shaped component and multiple through holes 4 on the stepped disc-shaped component that are adapted to the valve seat clamping flange bolts in the plunger pump head. The multiple valve seat clamping flange bolts can be correspondingly inserted into the multiple through holes 4. Specifically, in this embodiment, the stepped disc-shaped component includes a large disc 2 and a small disc 3 fixed to the front end of the large disc 2. A central circular hole is provided at the center of both the large disc 2 and the small disc 3. A second screw passes through the central circular hole, and the central circular hole and the second screw are clearance-fitted to allow the stepped disc-shaped component to slide on the second screw. Six through holes 4 are spaced apart around the circumference of the large disc 2, and all six through holes 4 are circular holes. It should be noted that the valve seat clamping flange bolt assembly includes the valve seat clamping flange bolt body and the flange bolt nut threaded onto the valve seat clamping flange bolt body. When it is necessary to fix the centering disc mechanism to the outer wall of the pump head cylinder in the plunger pump head, the valve seat clamping flange bolt bodies are passed through the multiple through holes 4 on the stepped disc-shaped component, and the stepped disc-shaped component is fixed to the outer wall of the pump head cylinder using the corresponding flange bolt nuts.

[0023] The adjusting nut mechanism includes an adjusting nut body 5 and two first operating handles 6 fixedly mounted on the side wall of the adjusting nut body 5. In this embodiment, the adjusting nut body 5 is a hexagonal nut, and the first operating handles 6 are round rods.

[0024] The push-pull mechanism 7 includes a disc-shaped component. When the disc-shaped component is subjected to a pushing force, it can push the spring seat out from its mounting position to disassemble the spring seat. When the disc-shaped component is subjected to a pulling force, it can pull the spring seat into its mounting position to install the spring seat. It should be noted that after assembly in this embodiment, the rear end of the push-pull mechanism 7 needs to be fitted against the front end of the second screw.

[0025] The limiting pin component includes a pin body, a threaded post fixed at the front end of the pin body, and a second operating handle fixed at the rear end of the pin body.

[0026] The traction head component 10 includes a first connecting threaded rod threadedly connected to the front end of the connecting head component and a second connecting threaded rod fixed to the front end of the first connecting threaded rod and threadedly connected to a threaded hole on the valve seat in the plunger pump head.

[0027] The usage method of this embodiment is as follows: I. Method of using this embodiment when disassembling the valve seat First, pause the plunger pump and depressurize it. Then, remove the valve seat clamping flange and take off the drain valve plate. Insert one end of the traction head component 10 into the pump head cylinder cavity of the plunger pump head, and insert both the push-pull mechanism 7 and the small disc 3 in the centering disc mechanism into the pump head cylinder cavity. Rotate the screw mechanism 1 to thread the traction head component 10 onto the valve seat. Then, fix the centering disc mechanism onto the outer wall of the pump head cylinder. Remove the limiting pin component and then rotate the adjusting nut mechanism. When rotating the adjusting nut mechanism, the screw mechanism 1 will move away from the valve seat. Continuing to rotate the nut mechanism will remove the valve seat.

[0028] II. Method of using this embodiment when disassembling the spring seat First, pause the plunger pump and depressurize it. Then, disassemble the valve seat clamping flange, the lower drain valve plate, the suction spring, the plunger assembly, and the spring seat fixing bolts. Insert one end of the traction head component 10 into the plunger pump head and make the front end of the push-pull mechanism 7 fit against the end face of the spring seat. Then, insert the small disc 3 in the straightening disc mechanism into the pump head cylinder cavity. Fix the straightening disc mechanism on the outer wall of the pump head cylinder and install the upper limit pin component. Then, rotate the screw mechanism 1. The screw mechanism 1 can drive the push-pull mechanism 7 to push the spring seat out from the spring seat installation position.

[0029] III. Method of using this embodiment when installing the spring seat Disassemble the connector component 9, the limiting nut component 8, and the push-pull mechanism 7. Insert one end of the spring seat into the pump head cylinder cavity. Insert the small disc 3 in the aligning disc mechanism into the pump head cylinder cavity, so that the screw mechanism 1 passes through the spring seat. Then, put the push-pull mechanism 7 on the screw mechanism 1. Tighten the limiting nut component 8 so that it presses against the front end of the push-pull mechanism 7. Remove the limiting pin component. Then, rotate the adjusting nut mechanism. When rotating the adjusting nut mechanism, the screw mechanism 1 will move towards the spring seat. Continue to rotate the nut mechanism. The screw mechanism 1 can drive the push-pull mechanism 7 to install the spring seat into the pump head cylinder. Then, disassemble this embodiment in sequence. Finally, install the spring seat fixing bolt, plunger assembly, valve seat, and valve seat clamping flange in sequence.

[0030] It should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plunger pump head repair tool, characterized in that: It includes a screw mechanism, a centralizing disc mechanism sleeved on the screw mechanism and fixedly connected to the valve seat clamping flange bolt component in the plunger pump head, an adjusting nut mechanism threaded on the screw mechanism and located behind the centralizing disc mechanism, a limiting pin component detachably connected on the centralizing disc mechanism and capable of limiting the adjusting nut mechanism, a push-pull mechanism sleeved on the screw mechanism and located in front of the centralizing disc mechanism, a limiting nut component threaded on the screw mechanism and pressing against the front end of the push-pull mechanism, a connecting head component threaded on the front end of the screw mechanism, and a traction head component threaded on the front end of the connecting head component and capable of being threadedly connected to the valve seat in the plunger pump head.

2. The plunger pump head repair tool according to claim 1, characterized in that: The screw mechanism includes a first screw and a second screw fixed at the rear end of the first screw, wherein the diameter of the first screw is smaller than the diameter of the second screw.

3. A plunger pump head repair tool according to claim 2, characterized in that: The screw mechanism also includes a hexagonal block fixed to the end of the second screw.

4. A plunger pump head repair tool according to claim 3, characterized in that: The centering disc mechanism includes a stepped disc-shaped component and multiple through holes on the stepped disc-shaped component that are adapted to the valve seat clamping flange bolt components in the plunger pump head. The multiple valve seat clamping flange bolt components can be correspondingly inserted into the multiple through holes.

5. A plunger pump head repair tool according to claim 4, characterized in that: The adjusting nut mechanism includes an adjusting nut body and two first operating handles that are fixed to the side wall of the adjusting nut body.

6. A plunger pump head repair tool according to any one of claims 1-5, characterized in that: The push-pull mechanism includes a disc-shaped component.

7. A plunger pump head repair tool according to claim 6, characterized in that: The limiting nut component is a round nut.

8. A plunger pump head repair tool according to claim 7, characterized in that: The connector component uses a hexagonal nut.

9. A plunger pump head repair tool according to claim 8, characterized in that: The limiting pin component includes a pin body, a threaded post fixed at the front end of the pin body, and a second operating handle fixed at the rear end of the pin body.

10. A plunger pump head repair tool according to any one of claims 1-5 and 7-9, characterized in that: The traction head component includes a first connecting threaded rod threadedly connected to the front end of the connecting head component and a second connecting threaded rod fixed to the front end of the first connecting threaded rod and threadedly connected to a threaded hole on the valve seat in the plunger pump head.

Images