CN212947572U - Hanging chuck of drill pump valve seat puller - Google Patents

Abstract

The utility model relates to a "dop is hung to drilling pump valve seat drawer", in particular to pulling operation technical field of triplex horizontal piston pump valve seat for oil drilling. The hanging clamping head comprises a hanging clamping head body 1, an F-shaped stop block 2, a hinge pin shaft 3, a limiting pin shaft 4, a tensioning spring 5, a positioning bolt 6, a connecting thread 7, a spring mounting hole 8, a hinge pin hole 9 and a positioning pin hole 10. The utility model is connected with the screw rod of the valve seat puller and then is put into the valve seat to be pulled for use; the F-shaped stop block 2 is opened before being placed, the F-shaped stop block 2 is restored to be opened under the tension action of the tension spring 5 after being placed, and the valve seat can be pulled out by operating the manual hydraulic pump to press the valve seat, so that the valve seat is pulled out. The beneficial effects are that: the structure is simple, and the use is convenient; the pulling device solves the problem that the pulling end of the puller and the valve seat to be pulled are not easy to reliably and effectively connect in the pulling process of the valve seat of the drilling pump.

Description

Hanging chuck of drill pump valve seat puller

Technical Field

The utility model relates to a dop is hung to drilling pump valve seat drawer, in particular to pulling operation technical field of triplex horizontal piston pump valve seat for oil drilling.

Background

The drilling pump is a key device in petroleum drilling construction, and has the functions of pumping the drilling fluid to the well bottom by the reciprocating motion of the piston in the cylinder sleeve, cooling the drill bit, cleaning the well bottom, breaking rock by waterpower and the like. The book number published by the university of petroleum press 2011 in 7 months is ISBN978-7-5636-3324-1, and the page P168 in the first book of the petroleum and petrochemical professional skill training course with the book name of "petroleum drilling industry" is described in detail: "China's domestic pump for petroleum and natural gas well drilling has realized the standardization, the well drilling pump used at present is the three-cylinder horizontal piston pump". When the drilling pump works, the drilling fluid can be pumped to the bottom of the well through the reciprocating motion of the piston, and the cylinder sleeve is connected with the hydraulic end. The valve assembly is mainly composed of a valve seat and a valve body, the valve seat is fixed on the liquid end body, the valve body is located on the valve seat and can move up and down, and dynamic sealing is formed between the valve seat and the valve body. When the piston moves outwards in the cylinder sleeve, the upper valve assembly is closed, the lower valve assembly is opened, and drilling fluid is sucked in; when the piston moves inwards in the cylinder sleeve, the lower valve assembly is closed, the upper valve assembly is opened, and the drilling fluid is output under the action of pressure. Because the working pressure of the drilling pump is higher, the sealing part of the valve body and the valve seat is often damaged by high-pressure fluid, and at the moment, the valve body or the valve seat needs to be replaced. Journal of Shandong province, Shandong Industrial technology, 22 nd 2019 has the following description: in the working process of the drilling pump, the valve seats of a water feeding cylinder and a water discharging cylinder at a hydraulic end are easy to damage, and particularly under the condition of high solid content of drilling fluid, the damage is more serious, a valve seat puller is required to be used for pulling, and a new valve seat is required to be replaced. The tool for pulling out the valve seat of the through hole is a common inverted T-shaped hanging and pulling rod, the upper end of the pulling rod is pulled out by hydraulic drive, the structure is simple, the inverted T-shaped pulling claw at the hanging end is larger than the inner diameter of the valve seat, a thin steel wire rope is required to be pulled to the inverted T-shaped pulling claw at the hanging end to be erected to form a vertical shape, the inverted T-shaped pulling claw is smaller than the inner diameter of the valve seat, the hanging end can only enter the valve seat, the state of a steel wire rope traction rope in a cylinder cannot be seen after the hanging end is hung on the valve seat, the traction steel wire rope is extremely easy to damage and break in the pulling process, and the hanging end cannot be normally hung on the valve seat when the tool is used again. Under the circumstance, the common method on site is to lower the valve seat puller to the upper water chamber and use a method of knocking or undershooting for many times to enable the hanging end inverted T-shaped pulling claw to be hung on the valve seat, or to hang the hanging end inverted T-shaped pulling claw on the valve seat by manual operation when taking the valve seat at the drainage end, so that potential safety hazards exist, and time and labor are wasted. If the hanging end is inverted T-shaped, the pulling claw deforms, time and labor are wasted by adopting a manual method and knocking or punching downwards, if the hanging end deforms seriously, the hanging end cannot be used, and a new pulling rod assembly needs to be replaced, so that manpower and material resources are wasted, the labor intensity of workers is increased, and the working efficiency is reduced.

Disclosure of Invention

The utility model aims at providing "a drill pump valve seat extractor hangs the chuck to the above-mentioned defect that prior art exists," hanging the end "of the valve seat extractor of field usage is applied to the operation of pulling out of valve seat, realizes that valve seat extractor" hangs the end "and waits to pull out quick, the effective connection of valve seat. The valve seat extractor solves the problem that the hanging end of the existing valve seat extractor is not easily connected with a valve seat to be extracted and is easy to damage tools.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a hanging chuck of a well drilling pump valve seat extractor comprises a hanging chuck body, an F-shaped stop block, a hinge pin shaft, a limiting pin shaft, a tensioning spring, a positioning bolt, a connecting thread, a spring mounting hole, a hinge pin hole and a positioning pin hole. The hanging chuck body is integrally designed to be sleeve-shaped, and is provided with 2 hinge pin holes and 1 positioning pin hole; a threaded hole matched with the positioning bolt is designed on the lower end face of the hanging clamping head body so as to install the positioning bolt; the upper end of the hanging chuck body is provided with a connecting thread used for connecting with a valve seat puller screw rod; the F-shaped stop block is integrally designed to be F-shaped, and the lower end of the F-shaped stop block is provided with a hole with the diameter larger than that of the hinge pin shaft for being connected with the hanging chuck body through the hinge pin shaft; the inner side surface of the F-shaped block is provided with a blind hole as a spring mounting hole for mounting a tensioning spring; the limiting pin shaft is arranged in the positioning pin hole and used for positioning and limiting the rotation stroke of the F-shaped stop block; the positioning bolt is arranged in a threaded hole at the lower part of the hanging clamping head body and is used for fixing a hinge pin shaft for hinging the hanging clamping head body and the F-shaped stop block to prevent the hanging clamping head body and the F-shaped stop block from falling off.

Compared with the prior art, the beneficial effects of the utility model are that: the structure is simple, the processing and the use are convenient, the cost is low, the device can be used for many times, the manpower can be saved, and the maintenance efficiency of the drilling pump is improved; the pulling device solves the problem that the pulling end of the puller and the valve seat to be pulled are not easy to reliably and effectively connect in the pulling process of the valve seat of the drilling pump.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention.

Fig. 2 is a schematic view of the assembly structure of the present invention (the component "hanging chuck body 1" is fully cut open).

In the drawings: the hanging clamping head comprises a hanging clamping head body 1, an F-shaped stop block 2, a hinge pin shaft 3, a limiting pin shaft 4, a tensioning spring 5, a positioning bolt 6, a connecting thread 7, a spring mounting hole 8, a hinge pin hole 9 and a positioning pin hole 10.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments. The hanging chuck body 1 is made of round steel with the diameter being 5-10 mm smaller than the diameter of the inner hole of the valve seat, and the interior of the hanging chuck body is hollowed to facilitate the installation of an F-shaped stop block 2, a limiting pin shaft 4 and a tensioning spring 5; the upper part of the hanging chuck body 1 is provided with a connecting thread 7 matched with the thread at the lower end of the screw rod of the valve seat extractor so as to realize firm and reliable connection; the F-shaped stop block 2 is limited by a limiting pin shaft 4 and a tension spring 5 and can freely deflect within a certain angle range by taking the hinge pin shaft 3 as a shaft; the F-shaped stop block 2 is symmetrically arranged inside the hanging chuck body 1 through a hinge pin shaft 3 and a hinge pin hole 9, and the hinge pin shaft 3 is fixed by using a positioning bolt 6 after installation; the limiting pin shaft 4 is arranged in the positioning pin hole 10 in an interference connection mode.

When the valve seat pulling device is applied on site, the utility model is connected and fastened with a screw rod of the valve seat pulling device through the connecting thread 7, and then the valve seat pulling device is put into a valve seat to be pulled through a valve seat through hole for use; the front F-shaped block 2 is placed and is under the tension action of a tension spring 5 to be in an open state, the outer side face of the F-shaped block 2 is limited by an inner hole of a valve seat in the process of continuously lowering, the spring tension of the tension spring 5 is overcome, the F-shaped block 2 contracts in a hanging chuck body 1 and is continuously lowered, when the F-shaped block 2 descends to cross the lower end face of the valve seat, the F-shaped block 2 is not limited by the inner hole of the valve seat any more, the tension action of the tension spring 5 restores to the open state, the valve seat puller at the moment firmly clamps the valve seat to be pulled, then the manual hydraulic pump can be operated to pump, the jack generates displacement along with the rise of the liquid pressure, and the valve seat can be pulled out to finish the pulling of the valve seat.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims (1)

1. A hanging chuck of a well drilling pump valve seat extractor comprises a hanging chuck body (1), an F-shaped stop block (2), a hinge pin shaft (3), a limiting pin shaft (4), a tensioning spring (5), a positioning bolt (6), a connecting thread (7), a spring mounting hole (8), a hinge pin hole (9) and a positioning pin hole (10); the hanging chuck body (1) is characterized in that: the whole design is sleeve-shaped, 2 hinge pin holes (9) and 1 positioning pin hole (10) are designed on the sleeve-shaped hinge pin, a threaded hole matched with the positioning bolt (6) is designed on the lower end face of the sleeve-shaped hinge pin, so that the positioning bolt (6) can be installed, the positioning bolt (6) is installed in the threaded hole at the lower part of the hanging chuck body (1) and is used for fixing the hinge pin shaft (3) of the hinge connecting hanging chuck body (1) and the F-shaped stop block (2) to prevent the hinge pin shaft from falling off; the F-shaped stop block (2) is characterized in that: the integral design is F-shaped, the lower end of the integral design is provided with a hole with the diameter larger than that of the hinge pin shaft (3) and used for being connected with the hanging clamping head body (1) through the hinge pin shaft (3), the inner side surface of the F-shaped retainer (2) is provided with a blind hole as a spring mounting hole (8) and used for mounting a tensioning spring (5), the F-shaped retainer (2) is limited by the limiting pin shaft (4) and the tensioning spring (5) and can freely deflect within a certain angle range by taking the hinge pin shaft (3) as an axis, the limiting pin shaft (4) is mounted in a positioning pin hole (10) in an interference connection mode and used for positioning and limiting the rotation stroke of the F-shaped retainer (2), and the F-shaped retainer (2) is symmetrically mounted inside the hanging clamping head body (1) through the hinge pin shaft (3) and the hinge pin hole (9).

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