CN210195714U

CN210195714U - Oil drain device on reciprocating pump

Info

Publication number: CN210195714U
Application number: CN201920875071.4U
Authority: CN
Inventors: Weicheng Liang; 梁伟成; Chuang Liang; 梁闯
Original assignee: Liaoning Xinhua Instruments Co Ltd
Current assignee: Liaoning Xinhua Instruments Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-03-27
Anticipated expiration: 2029-06-12

Abstract

An oil drainer on a reciprocating pump comprises an upper joint, an upper outer sleeve, a clamping jaw, a lower joint and a sliding connecting rod, and is characterized in that the inner diameter of the upper part of the upper outer sleeve is provided with a clamping groove, and the inner diameter of the lower part of the upper outer sleeve is provided with a clamping groove; the clamping jaw is milled with two equally-divided notches, the upper end of the clamping jaw is provided with an inner boss and an outer boss, and the middle part of the clamping jaw is provided with an outer boss; the clamping jaw is arranged in the upper outer sleeve, and the outer boss at the upper end of the clamping jaw is arranged in the clamping groove of the upper outer sleeve; the upper outer sleeve is in threaded connection with the lower outer sleeve between the upper outer sleeve and the lower connector, and an oil drainage hole is processed on the lower outer sleeve; a sealing gasket is arranged at the gap between the upper outer sleeve and the lower end of the clamping jaw; vulcanizing a rubber pad in an inner hole at the upper end of the lower joint; the sliding connecting rod is arranged in the clamping jaw, and the upper end and the lower end of the sliding connecting rod are respectively provided with an internal thread and an external thread which are connected with the sucker rod. The utility model discloses requirement to using operating condition is more loose, moreover can used repeatedly.

Description

Oil drain device on reciprocating pump

Technical Field

The utility model relates to a downhole tool, especially bleeder on pump that oil field workover was used.

Background

The existing oil drain device has two using and mounting modes, one is mounted between the upper end of a pump cylinder of an oil well pump and the lower end of an oil pumping pipe of an oil well, and the other is mounted between the lower end of the pump cylinder of the oil well pump and the upper end of a fixed valve cover of the pump. In the well repairing operation process, the oil drainage operation process of the oil drainer is as follows: firstly, taking out the sucker rod and the piston from the well; then, throw the heavy object to the DH, make it strike and cut the shear pin and open the oil drainage hole, and then reach the goal of draining oil. The main problems of the oil drain device in the using process are as follows: before the oil drainage function is realized, the piston of the oil well pump must be taken out of the well, otherwise, the oil drainage operation cannot be carried out, so that the requirements on the use operation conditions are strict; in addition, after the oil drainage operation is completed once, the oil drainer is completely scrapped and must be replaced, namely, the oil drainer does not have the function of repeated use, so the use cost is higher; and then, as the heavy object is thrown, the accidents are more, if oil is viscous or blocked, the heavy object is not easy to cut off the shear pin, and the oil drain device cannot drain oil.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art, providing an oil drainer on reciprocating pump, relatively loose the requirement of using operating condition, moreover can used repeatedly.

The utility model provides a technical scheme: including top connection, last overcoat, jack catch, lower clutch and sliding connection pole, characterized by: a clamping groove A is formed in the inner diameter of the upper part of the upper outer sleeve, and a clamping groove B is formed in the inner diameter of the lower part of the upper outer sleeve; the clamping jaw is milled with two equally-divided notches, the upper end of the clamping jaw is provided with an inner boss and an outer boss, and the middle part of the clamping jaw is provided with an outer boss; the clamping jaw is arranged in the upper outer sleeve, and the outer boss at the upper end of the clamping jaw is arranged in the clamping groove A of the upper outer sleeve; the upper outer sleeve is in threaded connection with the lower joint, and an oil drainage hole C is formed in the lower outer sleeve; a sealing gasket is arranged at the gap between the upper outer sleeve and the lower end of the clamping jaw; vulcanizing a rubber pad D in an inner hole at the upper end of the lower joint; the sliding connecting rod is arranged in the clamping jaw, and the upper end and the lower end of the sliding connecting rod are respectively provided with an internal thread and an external thread which are connected with the sucker rod.

The utility model discloses an actively the effect: the requirements on the using operation conditions are relatively loose, and the device can be repeatedly used.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic view of the jaws.

Fig. 3 is a perspective view of the pawl.

Detailed Description

Referring to fig. 1-3, the specific structure is as follows: the upper end of the upper joint 1 is provided with an internal thread connected with an oil pipe, the upper outer sleeve 3 is in threaded connection with the lower end of the upper joint 1 and is sealed by a sealing ring 7, a clamping groove A is machined in the inner diameter of the upper part of the upper outer sleeve 3, and a clamping groove B is machined in the inner diameter of the lower part of the upper outer sleeve 3; the claw 2 is milled with two sections of 10 equally-divided gaps 8-1 and 8-2 to ensure that the claw is elastic; the upper end of the clamping jaw 2 is provided with an inner boss 2-1 and an outer boss 2-2, and the middle part of the clamping jaw 2 is provided with the outer boss 2-2; the clamping jaw 2 is arranged in the upper outer sleeve 3, and the inner boss 2-1 and the outer boss 2-1 at the upper end of the clamping jaw 2 are arranged in the clamping groove A of the upper outer sleeve 3; the upper outer sleeve 3 is in threaded connection with the lower joint 6 through the lower outer sleeve 5, and an oil drainage hole C is formed in the lower outer sleeve 5; a sealing gasket 4 is arranged at the gap between the upper outer sleeve 3 and the lower end of the clamping jaw 2; vulcanizing a rubber mat D in an inner hole at the upper end of the lower joint 6; the sliding connecting rod 8 is arranged in the clamping jaw 2, and the upper end and the lower end of the sliding connecting rod 8 are respectively provided with an internal thread 8-1 and an external thread 8-2 which are connected with the sucker rod. The upper end and the lower end of the sliding connecting rod 8 are respectively connected with the sucker rod. After the main tool (except the sliding connecting rod 8) is run into the well, the sliding connecting rod 8 is run into the well along with the sucker rod.

Principle of operation

The utility model discloses the tool main part (except sliding connection rod 8) is connected between 2 nd and 3 rd oil pipe from last, the draining passageway is for the open mode, after having gone up oil pipe down, sliding connection rod 8 is connected between 1 st and 2 nd sucker rod from last, along with the sucker rod in going into the well down, go into assigned position under, sliding connection rod 8 and jack catch 2 contact, because the shrink state is in the middle of jack catch 2, then drive jack catch 2 downstream, jack catch 2 and 6 vulcanized rubber pads D contacts of lower clutch, realize sealed drainage hole C that closes. At the moment, the middle outer boss 2-2 of the clamping jaw 2 enters the clamping groove B of the upper outer sleeve 3, the middle part expands, the sliding connecting rod 8 passes through the inside of the clamping jaw 2 and can continuously move downwards, at the moment, the upper part of the clamping jaw 2 also retreats from the clamping groove A of the upper outer sleeve 3, and the upper end of the clamping jaw 2 contracts. The sucker rod can be produced after being lowered. The connection position between the tool body and the slide link 8 is staggered, so that the oil extraction operation is not affected. Namely, the tool body is connected between the 2 nd to last and 3 rd oil pipes, and the sliding connecting rod 7 is connected between the 1 st to last and 2 nd sucker rods.

When workover needs the draining, play the sucker rod out, sliding connection 8 shifts up along with the sucker rod, because the upper end of jack catch 2 is the shrink state, sliding connection 8 drives jack catch 2 rebound when lifting, jack catch 2 separates with lower clutch 6, opens the draining passageway, accomplishes the draining, continues to lift jack catch 2, in the protruding draw-in groove A that gets into in the upper end of jack catch 2, the upper end is bloated, sliding connection 8 passes through from jack catch 2 upper end, accomplishes the pole-lifting operation. At this time, the oil drainage channel is completely opened, and other well repair operations can be carried out. When the rod is lowered again, the principle is the same as the above, the oil drainage channel is closed again, and production can be carried out.

Claims

1. The utility model provides an bleeder on reciprocating pump, includes top connection, goes up overcoat, jack catch, lower clutch and sliding connection pole, characterized by: the inner diameter of the upper part of the upper outer sleeve is provided with a clamping groove, and the inner diameter of the lower part of the upper outer sleeve is provided with a clamping groove; the clamping jaw is milled with two equally-divided notches, the upper end of the clamping jaw is provided with an inner boss and an outer boss, and the middle part of the clamping jaw is provided with an outer boss; the clamping jaw is arranged in the upper outer sleeve, and the inner boss and the outer boss at the upper end of the clamping jaw are arranged in the clamping groove of the upper outer sleeve; the upper outer sleeve is in threaded connection with the lower outer sleeve between the upper outer sleeve and the lower connector, and an oil drainage hole is processed on the lower outer sleeve; a sealing gasket is arranged at the gap between the upper outer sleeve and the lower end of the clamping jaw; vulcanizing a rubber pad in an inner hole at the upper end of the lower joint; the sliding connecting rod is arranged in the clamping jaw, and the upper end and the lower end of the sliding connecting rod are respectively provided with a thread connected with the sucker rod.