CN215486543U

CN215486543U - Plunger sealing structure of water injection pump for oil field

Info

Publication number: CN215486543U
Application number: CN202121118508.3U
Authority: CN
Inventors: 田军辉; 田军义; 陈伯军
Original assignee: Puyang Tianlong Industrial Co ltd
Current assignee: Puyang Tianlong Industrial Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-01-11
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a plunger sealing structure of a water injection pump for an oil field, and relates to the technical field of oil field water injection. The plunger pump comprises a pump body and a piston, wherein the piston is movably clamped in the pump body, a tail plug is hermetically clamped in the interior of the tail end of the pump body, a front plate is fixedly connected to the outer cylindrical surface of the head end of the pump body, a sleeve is slidably clamped in the outer cylindrical surface of the plug body, and the sleeve is fixedly clamped in the pump body. According to the utility model, the sealing gasket is positioned in the annular groove at the head end of the inner cavity of the pump body, the sleeve and the pump body are sealed, and the plug body is always in sliding clamping connection with the sleeve, so that the problem of aging of a rubber ring due to frequent movement of a piston is solved; the device is fixed through the base, the relative feeding length of the piston can be adjusted through different fixed positions, so that the motion track of the transmission part connected with the piston can be adjusted, and the problem that the function of the part is affected when the part inside the water injection pump device is obliquely installed is solved.

Description

Plunger sealing structure of water injection pump for oil field

Technical Field

The utility model belongs to the technical field of oilfield water injection, and particularly relates to a plunger sealing structure of a water injection pump for an oilfield.

Background

The plunger type water injection pump is mainly used in the oil extraction process of the oil field, a motor in the plunger type water injection pump drives a main shaft of the pump to rotate at a high speed through a belt, so that a plunger reciprocates in a cylinder, liquid in the cylinder is extruded, the pressure is increased, and the liquid pushes away an output pipeline of a discharge valve to inject water into the oil field, but the plunger type water injection pump still has the following defects in the actual use:

1. the existing plunger sealing structure of the water injection pump for the oil field is characterized in that a rubber ring is arranged in a connecting end cover of a piston and a pump body for sealing, and the rubber ring is aged due to frequent movement of the piston and frequent friction of the rubber ring in the working process of the water injection pump, so that the problem of engine oil leakage is caused;

2. the existing plunger sealing structure of the water injection pump for the oil field usually works in a severe environment when oil is extracted from the oil field, and when parts inside the water injection pump device are obliquely installed, the functions of the parts are affected.

Therefore, the existing plunger sealing structure of the water injection pump for the oil field cannot meet the requirements in practical use, so that an improved technology is urgently needed in the market to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a plunger sealing structure of a water injection pump for an oil field, wherein a sealing gasket is positioned in an annular groove at the head end of an inner cavity of a pump body, a sleeve is sealed with the pump body, and a plug body is always in sliding clamping connection with the sleeve, so that the problem of aging of a rubber ring due to frequent movement of a piston is solved; the device is fixed through the base, the relative feeding length of the piston is adjusted through different fixed positions of the base, so that the motion track of the transmission part connected with the piston can be adjusted, and the problem that the function of the part is affected when the part inside the water injection pump device is obliquely installed is solved.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a plunger sealing structure of a water injection pump for an oil field, which comprises a plunger pump and a piston, wherein the plunger pump comprises a pump body, the piston is movably clamped in the pump body, and the piston reciprocates in the pump body, so that the volume of an inner cavity of the sealed working pump body is changed to absorb and press oil.

Furthermore, the plunger pump still includes tail plug and leading board, the inside seal joint of pump body tail end has the tail plug, and the tail plug can adjust the flow when inhaling oil, pressing oil, and applicable in the occasion that high pressure, large-traffic and flow need be adjusted, the outer cylinder fixedly connected with leading board of pump body head end.

Further, the piston includes cock body and connecting plate, the outer cylinder slip joint of cock body has the sleeve, the fixed joint of sleeve is inside the pump body, then the cock body is located the inside of pump body, and cock body and sleeve inner wall. The sleeve is sealed joint with pump body inner wall, avoids hydraulic oil to get into the gap between the pump body, cock body and the sleeve, influences piston work precision then, and the sleeve is located the outside one end fixedly connected with connecting plate of the pump body, the connecting plate just is located the sealed pad of sleeve outer cylinder fixedly connected with, and sealed pad is located the ring channel of pump body inner chamber head end, seals sleeve and the pump body to make this device seal structure simple, sealing performance is strong, guarantees that the pump body is in vacuum state in the course of the work.

Further, leading board and the bottom fixedly connected with base of the pump body, and leading board is located the both sides of the pump body and has seted up two mounting holes respectively with the base, and the base is the rectangle, and two mounting holes of accessible are fixed, fixes this device then, and the fixed position of accessible is different, adjusts the piston and feeds length relatively.

Further, the equal slip joint in both sides of connecting plate has the bolt, and two the bolt meshes with the mounting hole of leading board both sides respectively, through the tight meshing of deciding of bolt and leading board, makes the connecting plate extrusion seal pad, fills inside the ring channel after the sealed atress compression of filling then, makes sealed effect better.

Further, the cock body runs through the sleeve, and the cock body is located the outside one end fixedly connected with spliced pole of sleeve, and the spliced pole is provided with two, and the drive link can be connected in the middle part of two spliced poles, and the drive link can rotate also parallel connection.

The utility model has the following beneficial effects:

1. according to the utility model, the sealing gasket is positioned in the annular groove at the head end of the inner cavity of the pump body, the sleeve and the pump body are sealed, so that the device is simple in sealing structure and strong in sealing performance, the plug body is always in sliding clamping connection with the sleeve, and the problem that the rubber ring is aged and engine oil leaks due to frequent movement of the piston and frequent friction of the rubber ring is solved.

2. The device is fixed through the base, the relative feeding length of the piston can be adjusted through different fixing positions, the two connecting columns are arranged, the middle parts of the two connecting columns can be connected with the transmission rods, and the transmission rods can be connected in a rotating or parallel mode, so that the motion track of the transmission part connected with the piston can be adjusted, and the problem that the function of parts is affected when the parts in the water injection pump device are installed obliquely is solved.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the plunger pump of the present invention;

FIG. 3 is a schematic cross-sectional view of the plunger pump of the present invention;

FIG. 4 is a schematic view of the piston structure of the present invention;

fig. 5 is a schematic diagram of the piston explosion structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a plunger pump; 110. a pump body; 120. a tail plug; 130. a front panel; 140. a base; 150. mounting holes; 200. a piston; 210. a plug body; 220. a sleeve; 230. a connecting plate; 240. a gasket; 250. a bolt; 260. connecting columns.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-5, the present invention relates to a plunger sealing structure for a water injection pump in an oil field, which includes a plunger pump 100 and a piston 200, wherein the plunger pump 100 includes a pump body 110, the piston 200 is movably clamped inside the pump body 110, and the piston 200 reciprocates in the pump body 110, so that the volume of the inner cavity of the pump body 110 is changed to absorb and press oil.

As shown in fig. 2 and 3, the plunger pump 100 further includes a tail plug 120 and a front plate 130, the tail plug 120 is sealed and clamped inside the tail end of the pump body 110, the tail plug 120 can adjust the flow rate when absorbing and pressing oil, and is suitable for occasions where high pressure, large flow rate and flow rate need to be adjusted, and the front plate 130 is fixedly connected to the outer cylindrical surface of the head end of the pump body 110; the front plate 130 and the bottom of the pump body 110 are fixedly connected with a base 140, two mounting holes 150 are respectively formed in the two sides of the front plate 130, which are located on the pump body 110, and the base 140 is rectangular and can be fixed through the two mounting holes 150, so that the device is fixed, the relative feeding length of the piston 200 can be adjusted through different fixed positions.

As shown in fig. 4 and 5, the piston 200 includes a plug body 210 and a connecting plate 230, a sleeve 220 is slidably engaged with an outer cylindrical surface of the plug body 210, the sleeve 220 is fixedly engaged inside the pump body 110, the plug body 210 is located inside the pump body 110, and the plug body 210 and an inner wall of the sleeve 220 are provided. The sleeve 220 is in sealing clamping connection with the inner wall of the pump body 110, so that hydraulic oil is prevented from entering gaps among the pump body 110, the plug body 210 and the sleeve 220, and further the working precision of the piston 200 is influenced, one end, located outside the pump body 110, of the sleeve 220 is fixedly connected with a connecting plate 230, the connecting plate 230 is fixedly connected with a sealing gasket 240, located on the outer cylindrical surface of the sleeve 220, the sealing gasket 240 is located in an annular groove at the head end of an inner cavity of the pump body 110, and the sleeve 220 and the pump body 110 are sealed, so that the device is simple in sealing structure and high in sealing performance, and the pump body 110 is guaranteed to be in a vacuum state in the working process; bolts 250 are slidably clamped on two sides of the connecting plate 230, the two bolts 250 are respectively meshed with the mounting holes 150 on two sides of the front plate 130, the connecting plate 230 extrudes the sealing gasket 240 through the tight meshing of the bolts 250 and the front plate 130, and then the sealing gasket 240 is compressed under force and filled in the annular groove, so that the sealing effect is better; the plug body 210 runs through the sleeve 220, one end of the plug body 210, which is located outside the sleeve 220, is fixedly connected with two connecting columns 260, the two connecting columns 260 are arranged, the middle parts of the two connecting columns 260 can be connected with driving rods, and the driving rods can rotate and can be connected in parallel.

The working principle is as follows:

when the device is used, the base 140 can be fixed through the two mounting holes 150, the device is further fixed, the fixing positions can be different, the relative feeding length of the piston 200 can be adjusted, the two connecting columns 260 are arranged, the middle parts of the two connecting columns 260 can be connected with the transmission rods, the transmission rods can be connected in a rotating mode or in a parallel mode, the movement track of the transmission piece connected with the piston 200 can be adjusted, the sealing gasket 240 is located in the annular groove at the head end of the inner cavity of the pump body 110, the sealing sleeve 220 is connected with the pump body 110, the sealing structure of the device is simple, the sealing performance is high, the connecting plate 230 extrudes the sealing gasket 240 through tight engagement of the bolt 250 and the front plate 130, the sealing gasket 240 is filled in the annular groove after being compressed by force, and the sealing effect is better.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.

Claims

1. The utility model provides an oil field is with injection pump plunger seal structure, includes plunger pump (100) and piston (200), its characterized in that: the plunger pump (100) comprises a pump body (110), and a piston (200) is movably clamped in the pump body (110).

2. The plunger seal structure of the water injection pump for the oil field according to claim 1, wherein the plunger pump (100) further comprises a tail plug (120) and a front plate (130), the tail plug (120) is hermetically clamped in the inner part of the tail end of the pump body (110), and the front plate (130) is fixedly connected to the outer cylindrical surface of the head end of the pump body (110).

3. The plunger sealing structure of the water injection pump for the oilfield according to claim 1, wherein the piston (200) comprises a plug body (210) and a connecting plate (230), the outer cylindrical surface of the plug body (210) is slidably clamped with a sleeve (220), the sleeve (220) is fixedly clamped inside the pump body (110), one end of the sleeve (220) located outside the pump body (110) is fixedly connected with the connecting plate (230), and the connecting plate (230) is fixedly connected with a sealing gasket (240) located on the outer cylindrical surface of the sleeve (220).

4. The plunger seal structure of the water injection pump for the oilfield according to claim 2, wherein the front plate (130) is fixedly connected with the base (140) at the bottom of the pump body (110), and the front plate (130) is located on two sides of the pump body (110) and is provided with two mounting holes (150) with the base (140).

5. The plunger seal structure of the water injection pump for the oilfield according to claim 3, wherein bolts (250) are slidably clamped on both sides of the connecting plate (230), and the two bolts (250) are respectively engaged with the mounting holes (150) on both sides of the front plate (130).

6. The plunger seal structure of the water injection pump for the oilfield according to claim 3, wherein the plug body (210) penetrates through the sleeve (220), and a connecting column (260) is fixedly connected to one end of the plug body (210) located outside the sleeve (220).