CN212583930U - Oil-well pump inlet valve of two-way flow - Google Patents

Abstract

A two-way flowing oil-well pump oil inlet valve, a valve cavity is arranged in a valve body, a liquid discharge hole is drilled downwards from the upper end face of the valve body and is communicated with the valve cavity, a valve ball is arranged in the valve cavity, a valve seat is arranged in the valve body, the upper end face of the valve seat is limited by a shoulder in the valve body, the valve ball is seated on the valve seat to realize sealing, the upper part of a lower connector is in threaded connection with the lower part of the valve body, the upper end face of the lower connector is pressed against the lower end face of the valve seat to enable the upper end face of the valve seat to be pressed against the shoulder in the valve body, a pressing column is arranged on the lower end face of a pressing plate, an n-shaped groove is arranged on the lower part of the pressing column, the upper part of a pulling claw is inserted into the n-shaped groove arranged on the lower part of the pressing column, the pulling claw is connected to the lower part of the pressing column by a pin shaft and can rotate around the pin shaft, a vertical connecting through hole is arranged on the pressing plate, the, the lower end of the pushing plate is seated on the upper end face of the spring, the lower portion of the upper connector is connected with the upper portion of the valve body, and the upper end face of the pushing plate is abutted to the lower end face of the shoulder in the upper connector.

Description

Oil-well pump inlet valve of two-way flow

Technical Field

The utility model discloses a pumping well downhole tool that oil field machinery adopted oil and was used is a two-way mobile's oil-well pump inlet valve.

Background

The oil well of oil field is mostly the pumping well which uses the oil pump to lift the well fluid, the oil pump is put in the well and driven by the pumping rod of the pumping unit to reciprocate to pump oil, the lower part of the oil pump is provided with an oil inlet valve, the oil inlet valve is a one-way valve, the well fluid can only flow upwards from the lower part of the valve ball, but can not flow downwards from the upper part of the valve ball. Therefore, after the pipe column of the oil well pump is put in, the well liquid in the oil pipe on the pump can not flow downwards, when the oil pumping pipe column is put forward, in order to prevent the well liquid in the oil pipe on the pump from spraying to the ground, the oil drain device is required to be installed on the oil pumping pipe column, the oil drain device is opened when the oil pumping pipe column is put forward, the well liquid in the oil pipe on the pump is drained into the sleeve, and the well liquid can be prevented from spraying to the ground. The existing oil drainers are various in types, and most of the existing oil drainers are opened by using a sucker rod in a well to drain oil or opened by using a ground throwing tool to drain oil. The most used pin drains are this type of drain. The pin oil drain device is arranged between an oil inlet valve and a pump barrel of the oil well pump, a piston of the oil well pump cannot touch a pin of the oil drain device during oil pumping, the oil well pump can work normally, when oil drainage is needed, a sucker rod and a piston of the oil well pump need to be put forward first, then the sucker rod is put in, the sucker rod falls rapidly to impact the hollow pin, and oil drainage is achieved after the hollow pin is broken. If the sucker rod of the oil drain device is disconnected, the sucker rod cannot be lifted out, and oil drainage cannot be realized. Also shown in the slip style rotary drain of patent No. 00258996.6. Although the sucker rod can also drain oil after being broken, the sucker rod can not be used for injecting liquid into a well from an oil pipe on the pump, and can not be used for an oil well needing to inject liquid into the well, such as a hydraulic packer under the pump to be pressed and sealed. If the oil well needs to be run into the hydraulic tool, only the next time of special purpose is to drive into the tubular column of the hydraulic tool, the lower part of the tubular column is provided with the hydraulic tool, so that the hydraulic tubular column is lost in the well, the tubular column for driving the hydraulic tool is proposed again, then the oil pumping tubular column is run into, when the maintenance hydraulic tool needs to be proposed, two times of tubular columns are required, the working procedures are multiple, the construction time is long, and the cost is high.

Disclosure of Invention

The utility model aims at overcoming the not enough of current oil-well pump inlet valve, bleeder, providing a two-way flow's oil-well pump inlet valve, oil pipe can leak oil on the pump when the sucker rod takes off absolutely, can follow the pump and go up the oil pipe and pour into the fluid downwards, reduces the operation, reduces the working costs.

The purpose of the utility model is realized like this: the hydraulic well plugging device comprises an upper connector, a pushing plate, a spring, a pin shaft, a pulling claw, a valve ball, a valve seat, a valve body and a lower connector, wherein a valve cavity is arranged in the valve body, a liquid discharge hole is drilled downwards from the upper end face of the valve body and is communicated with the valve cavity, 2-6 liquid discharge holes are uniformly distributed by taking the axis of the valve body as the center, the valve ball is placed in the valve cavity, the valve seat is placed in the valve body, the valve seat is positioned below the valve cavity, the upper end face of the valve seat is limited by a shoulder in the valve body, the diameter of the valve ball is larger than the inner diameter of the valve seat, the valve ball is seated on the valve seat to realize sealing, so that well liquid cannot flow downwards from top, the upper part of the lower connector is in threaded connection with the lower part of the valve body, the upper end face of the lower connector is pressed against the lower end face of the valve seat, the upper end face of the valve seat is pressed against the shoulder in the, the upper part of the pulling claw is inserted into an n-shaped groove formed in the lower part of the compression column, the pulling claw is connected to the lower part of the compression column through a pin shaft, the pulling claw can rotate around the pin shaft, a vertical through hole is formed in the pushing plate, the lower end face of the spring is seated on the upper end face of the valve body, the lower part of the compression column and the pulling claw are placed in the liquid discharge hole, the lower end of the pushing plate is seated on the upper end face of the spring, the lower part of the upper connector sleeves the pushing plate and the spring, the lower part of the upper connector is connected with the upper part of the valve body, the connection part keeps sealed, the upper end face of the pushing plate is propped against the lower end face of an inner circular bead of the upper connector, and when the spring is compressed by applying pressure from the upper end of the pushing plate, the hook end of the lower.

The utility model has the advantages that: the utility model discloses connect under the pump barrel of oil-well pump, when the oil-well pump was in bumping the pump state, the compression plate was being bulldozed in the pole weight pressure, made bulldoze the down compression spring of board, the lower part of pulling claw is gone down to valve ball department simultaneously, and the lower part hook end of pulling claw pulls out the valve ball and leaves the disk seat, realizes the UNICOM, makes well liquid can flow from the top down. Therefore, the utility model discloses have the draining function, need not drop into the sucker rod again after going out sucker rod, piston in the coming year and realize draining, also can guarantee to drain when the sucker rod breaks off, the utility model discloses can also follow the pump and oil pipe and pour into fluid downwards, can satisfy the requirement of taking hydraulic means under the pump, can reduce the operation process, shorten the engineering time, reduce the working cost, have apparent economic benefits.

Drawings

Fig. 1 is an assembly view of an embodiment of the present invention.

Fig. 2 is a lower left side view of the pushing plate 2 in fig. 1.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings.

The embodiment of the utility model comprises an upper joint 1, a push plate 2, a spring 3, a pin shaft 4, a pulling claw 5, a valve ball 6, a valve seat 7, a valve body 8 and a lower joint 9, wherein the valve body 8 is internally provided with a valve cavity 8-2, a liquid discharge hole 8-1 is drilled downwards from the upper end surface of the valve body 8, the liquid discharge hole 8-1 is communicated with the valve cavity 8-2, the number of the liquid discharge holes 8-1 is 2-6 and is uniformly distributed by taking the axis of the valve body 8 as the center, the valve ball 6 is arranged in the valve cavity 8-2, the valve seat 7 is arranged in the valve body 8, the valve seat 7 is positioned under the valve cavity 8-2, the upper end surface of the valve seat 7 is limited by a shoulder in the valve body 8, the diameter of the valve ball 6 is larger than the inner diameter of the valve seat 7, the valve ball 6 can realize sealing when being seated on the valve seat 7, so that well liquid can not flow from top to, the upper end surface of the lower joint 9 is pressed against the lower end surface of the valve seat 7 to enable the upper end surface of the valve seat 7 to be pressed on a shoulder surface in the valve body 8, the lower end surface of the pushing plate 2 is provided with a pressing column 2-1 extending downwards, the lower part of the pressing column 2-1 is provided with an n-shaped groove (as shown in figure 2), the upper part of the pulling claw 5 is inserted into the n-shaped groove arranged on the lower part of the pressing column 2-1, the pulling claw 5 is connected with the lower part of the pressing column 2-1 through a pin shaft 4, the pulling claw 5 can rotate around the pin shaft 4, the pushing plate 2 is provided with a vertical through hole 2-2, the lower end surface of the spring 3 is seated on the upper end surface of the valve body 8, the lower part of the pressing column 2-1 and the pulling claw 5 are placed in the liquid discharge hole 8-1, the lower end surface of the pushing plate 2 is seated on the upper end surface of the spring 3, the lower part of the, the lower part of the upper joint 1 is connected with the upper part of the valve body 8, the connection part keeps sealed, the upper end surface of the pushing plate 2 is propped against the lower end surface of the shoulder in the upper joint 1, when pressure is applied from the upper end of the pushing plate 2 to compress the spring 3, the lower hook end of the pulling claw 5 can pull the valve ball 6 to separate from the valve seat 7, and well fluid can flow from top to bottom.

The upper portion of top connection 1 has the screw thread, and the lower part of lower clutch 9 has connecting thread, the utility model discloses connect under the pump barrel of oil-well pump, replace current oil-well pump inlet valve.

After the sucker rod is lifted to prevent impact distance, the piston of the oil well pump cannot reach the pushing plate 2, the oil well pump is in a state as shown in figure 1, well fluid can push open the valve ball to pass through the valve cavity 8-2, the fluid-discharge hole 8-1 and the vertical connecting hole 2-2 and is discharged, and the oil well pump can normally work. When oil drainage is needed in the industry, a sucker rod string is lowered, the weight of the sucker rod is pressed on the pushing plate 2, the pushing plate 2 compresses the spring 3 downwards, meanwhile, the lower part of the pulling claw 5 moves downwards to the valve ball 6, the lower hook end of the pulling claw 5 pulls the valve ball 6 to leave the valve seat 7, so that well fluid can flow from top to bottom, and oil drainage is achieved. When the sucker rod is broken and taken off, the weight of the sucker rod below the breaking point plays a role of bumping the pump, and oil drainage is automatically realized. When fluid is injected downwards, the sucker rod string is placed downwards to enable the sucker rod string to be in a pump bumping state, the lower hook end of the pulling claw 5 pulls the valve ball 6 to enable the sucker rod string to leave the valve seat 7, the communication is achieved, and the fluid can be injected into the well, the construction requirement of fluid injection under the pump is met, and if the construction is wax, air lock, hydraulic seat sealing and the like are removed. After finishing the constructions of wax application, air lock release, hydraulic seat sealing and the like, the pumping rod is lifted to a state of not touching the pump, the spring 3 releases energy to push the pushing plate 2 to move upwards, so that the state of the figure 1 is realized, and the normal oil pumping production can be realized.

The spring 3 needs to avoid the liquid discharge hole 8-1 and the vertical communicating hole 2-2, so that the flow channel is smooth.

Claims (1)

1. A two-way flowing oil inlet valve of an oil well pump comprises an upper connector (1), a push plate (2), a spring (3), a pin shaft (4), a pulling claw (5), a valve ball (6), a valve seat (7), a valve body (8) and a lower connector (9), wherein a valve cavity (8-2) is arranged in the valve body (8), a liquid discharge hole (8-1) is drilled downwards from the upper end face of the valve body (8), the liquid discharge hole (8-1) is communicated with the valve cavity (8-2), 2-6 liquid discharge holes (8-1) are uniformly distributed by taking the axis of the valve body (8) as the center, the valve ball (6) is placed in the valve cavity (8-2), the valve seat (7) is placed in the valve body (8), the valve seat (7) is positioned below the valve cavity (8-2), the upper end face of the valve seat (7) is limited by a shoulder in the valve body (8), the diameter of valve ball (6) is greater than the internal diameter of disk seat (7), and valve ball (6) are sat and can be realized sealing on disk seat (7), make well fluid can not flow from the top down, and the upper portion of lower clutch (9) and the lower part threaded connection of valve body (8), the lower terminal surface of the up end roof pressure disk seat (7) of lower clutch (9), make the up end of disk seat (7) press tightly on the shoulder face in valve body (8), characterized by: a pressing column (2-1) is arranged on the lower end face of the pushing plate (2), an n-shaped groove is formed in the lower portion of the pressing column (2-1), the upper portion of a pulling claw (5) is inserted into the n-shaped groove formed in the lower portion of the pressing column (2-1), the pulling claw (5) is connected to the lower portion of the pressing column (2-1) through a pin shaft (4), the pulling claw (5) can rotate around the pin shaft (4), a vertical through hole (2-2) is formed in the pushing plate (2), the lower end face of a spring (3) is seated on the upper end face of a valve body (8), the lower portion of the pressing column (2-1) and the pulling claw (5) are placed in the liquid discharge hole (8-1), the lower end of the pushing plate (2) is seated on the upper end face of the spring (3), the lower portion of an upper connector (1) pushes and sleeves the plate (2) and the spring (3), and the lower portion of the upper connector (1) is connected with the upper portion of the valve, the joint keeps sealed, the upper end surface of the pushing plate (2) is propped against the lower end surface of the inner shoulder of the upper joint (1), and when pressure is applied from the upper end of the pushing plate (2) to compress the spring (3), the lower hook end of the pulling claw (5) can pull the valve ball (6) to separate from the valve seat (7), so that well fluid can flow from top to bottom.

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