CN212360145U

CN212360145U - Oil field plunger pump outlet header with buffer device

Info

Publication number: CN212360145U
Application number: CN202020598493.4U
Authority: CN
Inventors: 朱由村; 王建宁; 李金刚; 田衍震
Original assignee: Shandong Jinpeng Petrochemical Equipment Co ltd
Current assignee: Shandong Jinpeng Petrochemical Equipment Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-01-15
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses an oil field plunger pump outlet header with buffer, the one end of export header is the relief valve connector, and the other end of export header is water injection pipeline interface, is equipped with the feed liquor pipe and the buffer tube of radial alignment on the lateral wall of export header, be equipped with buffer on the buffer tube. The buffer devices are arranged in alignment with the liquid inlet pipe, so that high-pressure water impact of each pump outlet can be relieved, the water pressure is effectively reduced, the pressure of the outlet manifold can be kept stable, and excessive impact cannot be caused; adopt a plurality of buffer, not only be convenient for maintain, the cost is reduced, buffering effect is better moreover, use more stable, fully ensures the operating stability of plunger pump in the course of the work, has reduced the problem that the perforation of export manifold leaks, has improved the work efficiency and the life of plunger pump.

Description

Oil field plunger pump outlet header with buffer device

Technical Field

The utility model relates to a plunger pump outlet header technical field specifically is an oil field plunger pump outlet header with buffer.

Background

The oilfield flooding is an important means for compensating the underground deficit caused by the production of crude oil, maintaining or improving the pressure of an oil layer, realizing high and stable yield of the oilfield and obtaining higher recovery ratio. The plunger pump has small volume, high energy efficiency and high pressure, so that the plunger pump is widely applied to the water injection work of various large oil fields.

However, during the actual use of the plunger pump (3-9 cylinders), the collecting pipe is used for collecting the liquid flow of 3-9 plunger cylinder outlets. 3-9 liquid flows from the plunger pump are periodic high-pressure liquid flows, and the liquid pressure waves generate great impact and abrasion on the manifold system, so that the problems of strong vibration of the manifold system and perforation and water leakage at the welding part of the manifold and the branch pipe are caused, and the working stability and the service life of the plunger pump are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an oil field plunger pump outlet manifold with a plurality of buffer devices aiming at the defects of the prior art, which can slow down the high pressure water impact of each pump outlet by adopting a plurality of buffer devices and a liquid inlet pipe to be arranged, effectively reduces the water pressure, can keep the pressure of the outlet manifold stable and can not cause overlarge impact; adopt a plurality of buffer, not only be convenient for maintain, the cost is reduced, buffering effect is better moreover, use more stable, fully ensures the operating stability of plunger pump in the course of the work, has reduced the problem that the perforation of export manifold leaks, has improved the work efficiency and the life of plunger pump.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an oil field plunger pump outlet header with buffer, the one end of outlet header is the relief valve connector, and the other end of outlet header is the water injection pipeline interface, is equipped with radially aligned feed liquor pipe and buffer tube on the lateral wall of outlet header, be equipped with buffer on the buffer tube.

Preferably, the export convergent pipe includes basic pipe and extension pipe, be equipped with 3 at least feed liquor pipes and 3 buffer tubes on the basic pipe, be equipped with 1 at least feed liquor pipe and 1 buffer tube on the extension pipe, the tip of basic pipe and extension pipe all is equipped with the flange who is used for connecting, and the centre is equipped with first sealing washer when two flange joint.

Preferably, the damping device is an accumulator.

Preferably, the accumulator is a gas accumulator.

Preferably, the one end that the export collection pipe was kept away from to the buffer tube is equipped with the buffer tube flange of being connected with the energy storage ware, the middle part of buffer tube flange is equipped with out the liquid hole, the internal diameter size of buffer tube is less than the internal diameter size of feed liquor pipe, it is the toper structure to go out the liquid hole, and goes out the diameter in liquid hole and reduce gradually from inside to outside.

Preferably, an energy accumulator flange is arranged on the energy accumulator, the energy accumulator flange is connected with the buffer pipe flange through a bolt, and a second sealing ring is arranged between the energy accumulator flange and the buffer pipe flange.

Preferably, the energy accumulator flange is provided with a first sealing groove matched with the second sealing ring, and the buffer pipe flange is provided with a second sealing groove matched with the second sealing ring.

Preferably, the edge of energy storage ware flange is equipped with the constant head tank, the edge of buffer pipe flange is equipped with the locating lever with constant head tank complex.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model adopts the alignment installation of the plurality of buffer devices and the liquid inlet pipe, can slow down the high pressure water impact of each pump outlet, effectively reduces the water pressure, can keep the pressure stability of the outlet manifold, and can not cause too much impact; adopt a plurality of buffer, not only be convenient for maintain, the cost is reduced, buffering effect is better moreover, use more stable, fully ensures the operating stability of plunger pump in the course of the work, has reduced the problem that the perforation of export manifold leaks, has improved the work efficiency and the life of plunger pump.

2. The utility model adopts the energy accumulator as the buffer device, has good buffer effect, low cost and convenient maintenance; the liquid outlet hole is of a conical structure, so that the impact of a high-pressure water column can be relieved, the water pressure loss of the plunger pump is reduced, and the working pressure of the pump is ensured.

3. The utility model discloses edge at the energy storage ware flange is equipped with the constant head tank, the edge of buffer tube flange be equipped with constant head tank complex locating lever, locating lever and constant head tank direct cooperation when connecting, can support the energy storage ware on the one hand, use manpower sparingly, on the other hand can improve the speed of bolt hole butt joint, saves connection time.

4. The utility model discloses an export manifold is sectional type detachable construction, can adapt to the plunger pump liquid stream of different jar numbers and collect the needs, and it is more convenient to use, when the manifold section appears damaging and scraps, only needs the segmentation to change, has saved the maintenance cost.

Drawings

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

FIG. 2 is a schematic view of the structure of the extension tube;

FIG. 3 is a schematic view of the buffer device in connection with a buffer tube;

FIG. 4 is a schematic structural view of a buffer tube flange;

fig. 5 is a schematic structural view of an accumulator flange.

In the figure: 1-an accumulator; 101-accumulator flange; 102-a positioning groove; 103-a first sealing groove 2-a lengthening tube; 3-a base pipe; 4-a liquid inlet pipe; 5-a buffer tube; 501-buffer pipe flange; 502-liquid outlet holes; 503-positioning rod; 504-a second seal groove; 6-butting flange; 7-a first sealing ring; 8-second sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, one end of the outlet manifold is a safety valve connecting port and is connected with a pressure relief valve, the other end of the outlet manifold is a water injection pipeline interface, a liquid inlet pipe 4 is arranged on the side wall of the outlet manifold, a buffer pipe 5 opposite to the liquid inlet pipe 4 is arranged on the side wall of the outlet manifold, and a buffer device is arranged on the buffer pipe 5.

In this embodiment, the buffer device is an energy accumulator, the energy accumulator is a gas type energy accumulator, the material of the shell of the energy accumulator is 316L stainless steel, the designed wall thickness of the shell is 7mm, the nominal pressure is 20MPa, the water pressure test pressure is 30MPa, the tightness test pressure is 22MPa, the engineering solvent is 0.63L, the working medium used in the energy accumulator is nitrogen, and other gases with inactive chemical properties can also be used.

When the plunger pump is used for compression drainage, water enters from the liquid inlet pipe 4 and collides into the opposite buffer pipe 5, enters the energy accumulator and compresses the capsule filled with nitrogen, so that the effect of buffering impact is achieved; when the plunger pump sucks water, the water in the accumulator can be discharged from the accumulator again to maintain the hydraulic pressure in the outlet header.

The multiple energy accumulators are arranged opposite to the liquid inlet pipe, so that the high-pressure water column of each pump outlet can be slowed down, the water pressure is effectively reduced, the pressure stability of the outlet manifold can be kept, and the overlarge impact cannot be caused. A plurality of energy storage wares 1 replace a big energy storage ware, not only are convenient for maintain, the cost is reduced, and the buffering effect is better moreover, use more stable, fully ensures plunger pump operating stability in the course of the work, has reduced the problem that the perforation of export manifold leaks, has improved the work efficiency and the life of plunger pump.

In order to facilitate replacement, as shown in fig. 2, a buffer tube flange 501 connected with the energy accumulator is arranged at one end of the buffer tube 5 far away from the outlet manifold, a liquid outlet hole 502 is arranged in the middle of the buffer tube flange 501, the inner diameter of the buffer tube 5 is about 3/5 of the inner diameter of the liquid inlet tube 4, the liquid outlet hole 502 is of a conical structure, the diameter of the liquid outlet hole 502 is gradually reduced from inside to outside, and the diameter of the outlet is about 2/5 of the inner diameter of the liquid inlet tube 4, so that high-pressure water impact at the outlet of the plunger cylinder can be relieved, and water pressure loss of the plunger pump is reduced.

Further, an energy storage flange 101 is arranged on the energy storage device 1, the energy storage flange 101 is connected with the buffer pipe flange 501 through bolts, and a second sealing ring 8 is arranged between the energy storage flange 101 and the buffer pipe flange 501.

In order to increase the fixing firmness of the second seal ring 8, the energy accumulator flange 101 is provided with a first seal groove 103 matched with the second seal ring 8, and the buffer pipe flange 501 is provided with a second seal groove 504 matched with the second seal ring 8.

Since bolt holes need to be aligned when the flanges are installed, and the flanges cannot rotate only after two bolts are screwed, which greatly increases the complexity of connection, as shown in fig. 3-5, a positioning groove 102 is provided at the edge of the energy accumulator flange 101, and a positioning rod 503 matched with the positioning groove 102 is provided at the edge of the buffer tube flange 501. Locating lever 503 and constant head tank 102 direct cooperation when connecting, can support energy storage ware 1 on the one hand, use manpower sparingly, and on the other hand can improve the speed of bolt hole butt joint, saves the joining time.

In addition, because the export manifold of prior art is overall structure, when there is a damage, then lead to scrapping of whole pipeline, and each kind of export manifold can only correspond a plunger pump, it is very inconvenient to use, manufacturing cost has been increased, in this embodiment, the export manifold includes basic pipe 3 and extension pipe 2, be equipped with 3 at least

feed liquor pipes

4 and 3 buffer tubes 5 that the position is relative on the basic pipe 3, be equipped with 1 at least

feed liquor pipe

4 and 1 buffer tube 5 on the extension pipe 2, the tip of basic pipe 3 and extension pipe 2 all is equipped with the flange 6 that is used for the connection, pass through bolted connection between flange 6, in order to increase the leakproofness, set up first sealing washer 7 between two flange 6. In this embodiment, be equipped with three feed liquor pipes 4 on the base pipe 3, be equipped with two feed liquor pipes 4 on the extension pipe 2, plunger pump according to the difference, select a base pipe 3 or several extension pipe 2, be a base pipe 3 and two extension pipe 2 in the figure 1, it has 7 feed liquor pipes 4 to correspond, it then becomes 9 feed liquor pipes 4 to increase an extension pipe 2, it then becomes 5 feed liquor pipes 4 and adapts to the export of plunger pump and is 3 to reduce one, 5, 7 or 9 the condition, it is more convenient to use, and when the harm, only need the segmentation to be changed, and the maintenance cost is saved.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides an oil field plunger pump outlet header with buffer, the one end of export header is the relief valve connector, and the other end of export header is water injection pipeline interface, its characterized in that: the side wall of the outlet header is provided with a liquid inlet pipe and a buffer pipe which are aligned in the radial direction, and the buffer pipe is provided with a buffer device.

2. An oilfield plunger pump outlet header with a cushioning device as defined in claim 1, wherein: the export convergent pipe includes basic pipe and extension pipe, be equipped with 3 at least feed liquor pipes and 3 buffer tubes on the basic pipe, be equipped with 1 at least feed liquor pipe and 1 buffer tube on the extension pipe, the tip of basic pipe and extension pipe all is equipped with the flange who is used for connecting, and the centre is equipped with first sealing washer when two flange joint.

3. An oilfield plunger pump outlet header with a cushioning device as defined in claim 1, wherein: the buffer device is an energy accumulator.

4. An oilfield plunger pump outlet header with a cushioning device as defined in claim 3, wherein: the energy accumulator is a gas type energy accumulator.

5. An oilfield plunger pump outlet header with a cushioning device as defined in claim 3, wherein: the one end that the export convergent pipe was kept away from to the buffer tube is equipped with the buffer tube flange of being connected with the energy storage ware, the middle part of buffer tube flange is equipped with out the liquid hole, the internal diameter size of buffer tube is less than the internal diameter size of feed liquor pipe, it is the toper structure to go out the liquid hole, and goes out the diameter in liquid hole and reduce from inside to outside gradually.

6. An oilfield plunger pump outlet header with a cushioning device as defined in claim 5, wherein: and an energy accumulator flange is arranged on the energy accumulator, the energy accumulator flange is connected with the buffer pipe flange through a bolt, and a second sealing ring is arranged between the energy accumulator flange and the buffer pipe flange.

7. An oilfield plunger pump outlet header with a cushioning device as defined in claim 6, wherein: the energy accumulator flange is provided with a first sealing groove matched with the second sealing ring, and the buffer pipe flange is provided with a second sealing groove matched with the second sealing ring.

8. An oilfield plunger pump outlet header with a cushioning device as defined in claim 6, wherein: the edge of energy storage ware flange is equipped with the constant head tank, the edge of buffer pipe flange is equipped with the locating lever with constant head tank complex.