CN216477794U

CN216477794U - Plunger pump gland sealing device for petroleum well cementation and fracturing equipment

Info

Publication number: CN216477794U
Application number: CN202122488829.9U
Authority: CN
Inventors: 莫东海; 张远; 冷美玲
Original assignee: Panjin Aojia Petroleum Machinery Equipment Co ltd
Current assignee: Panjin Aojia Petroleum Machinery Equipment Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-10
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a plunger pump pressure cover sealing device for oil cementing and fracturing equipment, which comprises a plunger pump body, a sleeve, two chutes, two sliding blocks, a sealing ring, a pressing cover and a bolt, and relates to the technical field of oil drilling and production equipment, the utility model increases the connection stability between the sleeve and the plunger pump body through the design of external threads arranged on the outer side of the sleeve and internal threads arranged in the plunger pump body, prevents the sealing ring and the sealing ring from falling off in the using process, can quickly insert the sealing ring and the sealing ring into the sleeve through the arrangement of the sliding blocks and the chutes, can quickly and stably fix the sealing ring in the sleeve through the arrangement of the pressing cover and the bolt, simplifies the replacement steps of the sealing ring, is convenient for installation and disassembly of workers, and reduces the operation time of the workers, the working efficiency is improved.

Description

Plunger pump gland sealing device for petroleum well cementation and fracturing equipment

Technical Field

The utility model relates to the technical field of petroleum drilling and production equipment, in particular to a plunger pump gland sealing device for petroleum well cementation and fracturing equipment.

Background

In the plunger pump in the petroleum well cementing and fracturing equipment, the static seal at the gland bears high pressure and resists corrosion of media such as slurry, fracturing fluid, acidic liquid and the like. The used structures such as O-shaped rings and check rings, D-shaped rings and check rings, Y-shaped rings and the like can leak in different degrees in a short time, and the seal rings are easy to extrude or leak by penetrating media.

The staff need carry out the periodic replacement to the sealing washer, but, current sealing washer connected mode is comparatively complicated, and installation and dismantlement are comparatively inconvenient, have influenced staff's operation, have reduced work efficiency, in view of this, to above-mentioned problem, deep research, tunnel and have the present case to produce.

Disclosure of Invention

In order to solve the problems, namely the problems of the background art, the utility model provides a plunger pump pressure cover sealing device for oil well cementing and fracturing equipment, which comprises a plunger pump body, a sleeve, two sliding grooves, two sliding blocks, a sealing ring, a pressing cover and a bolt, wherein an internal thread is arranged on the inner side wall of the plunger pump body, an external thread is arranged on the outer side of the sleeve, the top of the sleeve is of an open structure, a first through hole is arranged at the bottom of the sleeve, the sliding grooves are respectively arranged on the left side and the right side of the sleeve, threaded holes are respectively arranged on the front side and the rear side of the top of the sleeve, the sleeve is positioned on the inner side of the plunger pump body, the external thread of the sleeve is spirally connected with the internal thread of the plunger pump body, the two sliding blocks are respectively and fixedly arranged on the left side and the right side outside the sealing ring, the two sliding blocks are movably embedded in the two sliding grooves of the sleeve, and are in sliding fit with the two sliding grooves, the sealing ring is fixedly connected with the inner side of the sealing ring, the pressing cover is located at the top of the sealing ring and provided with a second through hole, the pressing cover is connected with the top of the sleeve through a bolt, and the bolt is arranged in the front and at the back.

Preferably, an annular supporting plate is fixedly arranged on the inner side of the plunger pump body, and a third through hole is formed in the annular supporting plate.

Preferably, the diameter of the first through hole in the sleeve is the same as the diameter of the sealing ring, the diameter of the second through hole in the pressing cover and the diameter of the third through hole in the annular supporting plate.

Preferably, the two sliding blocks and the two sliding grooves are both rectangular structures.

The beneficial technical effects of the utility model are as follows: according to the utility model, the stability of connection between the sleeve and the plunger pump body is increased through the design of the external threads arranged on the outer side of the sleeve and the internal threads arranged in the plunger pump body, and the phenomenon that the sealing ring and the sealing ring fall off in the use process is prevented.

Drawings

Fig. 1 shows a schematic front view of the present invention.

Fig. 2 shows a partially disassembled perspective structure of the present invention.

Fig. 3 shows an assembled perspective view of fig. 2.

Reference numerals: 1. a plunger pump body; 2. a sleeve; 3. a chute; 4. a slider; 5. a seal ring; 6. a seal ring; 7. a compression cover; 8. a bolt; 9. annular backup pad.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1-3, the utility model provides a plunger pump gland sealing device for oil cementing and fracturing equipment, comprising a plunger pump body 1, a sleeve 2, two chutes 3, two sliders 4, a sealing ring 5, a sealing ring 6, a pressing cover 7 and a bolt 8, wherein an internal thread is formed on the inner side wall of the plunger pump body 1, an external thread is arranged on the outer side of the sleeve 2, the top of the sleeve 2 is of an open structure, a first through hole is formed at the bottom of the sleeve 2, the chutes 3 are formed on the left side and the right side of the sleeve 2, threaded holes are formed on the front side and the rear side of the top of the sleeve 2, the sleeve 2 is positioned on the inner side of the plunger pump body 1, the external thread of the sleeve 2 is spirally connected with the internal thread of the plunger pump body 1, the two sliders 4 are fixedly arranged on the left side and the right side of the outer side of the sealing ring 5 respectively, the two sliders 4 are movably embedded in the two chutes 3 of the sleeve 2, and the two sliders 4 are in sliding fit with the two chutes 3, sealing washer 6 and 5 inboard fixed connection of sealing ring compress tightly lid 7 and are located 5 tops of sealing ring, and compress tightly lid 7 and seted up the second through-hole, compress tightly lid 7 and be connected through bolt 8 with 2 tops of sleeve, and bolt 8 sets up around being.

Specifically, an annular support plate 9 is fixedly arranged on the inner side of the plunger pump body 1, and a third through hole is formed in the annular support plate 9.

Specifically, the diameter of the first through hole in the sleeve 2 is the same as the diameter of the seal ring 6, the diameter of the second through hole in the hold-down cap 7, and the diameter of the third through hole in the annular support plate 9.

Specifically, the two sliders 4 and the two chutes 3 are each of a rectangular structure.

The working principle is as follows: as can be seen from fig. 1 to 3, when the sealing ring 5 and the sealing ring 6 are installed, the sleeve 2 is screwed into the plunger pump body 1 until the sleeve 2 contacts the annular support plate 9, then the slider 4 with the sealing ring 5 is aligned with the sliding groove 3 in the sleeve 2, the slider 4 is completely inserted into the sliding groove 3, then the bolt 8 on the pressing cover 7 is aligned with the threaded hole on the sleeve 2, and the bolt 8 is screwed so that the pressing cover 7 is connected with the sleeve 2, thereby fixing the sealing ring 5.

While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims

1. Oil well cementation and for fracturing equipment plunger pump pressure lid sealing device, including plunger pump body (1), sleeve (2), two spout (3), two slider (4), sealing ring (5), sealing washer (6), compress tightly lid (7) and bolt (8), its characterized in that: the plunger pump comprises a plunger pump body (1), wherein an inner thread is formed in the inner side wall of the plunger pump body (1), an outer thread is arranged on the outer side of a sleeve (2), the top of the sleeve (2) is of an open structure, a first through hole is formed in the bottom of the sleeve (2), sliding grooves (3) are formed in the left side and the right side of the sleeve (2), threaded holes are formed in the front side and the rear side of the top of the sleeve (2), the sleeve (2) is located on the inner side of the plunger pump body (1), the outer thread of the sleeve (2) is in threaded connection with the inner thread of the plunger pump body (1), two sliding blocks (4) are fixedly arranged on the outer left side and the right side of a sealing ring (5) respectively, the two sliding blocks (4) are movably embedded in the two sliding grooves (3) of the sleeve (2) and are in sliding fit with the two sliding grooves (3), and the sealing ring (6) is fixedly connected with the inner side of the sealing ring (5), the pressing cover (7) is located at the top of the sealing ring (5), the pressing cover (7) is provided with a second through hole, the pressing cover (7) is connected with the top of the sleeve (2) through a bolt (8), and the bolt (8) is arranged in the front and back directions.

2. The plunger pump pressure cap sealing device for oil cementing and fracturing equipment of claim 1, wherein: an annular supporting plate (9) is fixedly arranged on the inner side of the plunger pump body (1), and a third through hole is formed in the annular supporting plate (9).

3. The plunger pump pressure cap sealing device for oil cementing and fracturing equipment of claim 1, wherein: the diameter of the first through hole in the sleeve (2) is the same as that of the sealing ring (6), that of the second through hole in the pressing cover (7) and that of the third through hole in the annular supporting plate (9).

4. The plunger pump pressure cap sealing device for oil cementing and fracturing equipment of claim 1, wherein: the two sliding blocks (4) and the two sliding grooves (3) are both of rectangular structures.