High-pressure plunger pump skid-mounted device for oilfield water injection

Abstract

The utility model discloses a high-pressure plunger pump skid-mounted device for oilfield water injection, which comprises a skid-mounted base, a plunger pump standby unit is arranged at the top of the skid-mounted base, a plunger pump unit is arranged at the top of the skid-mounted base, a liquid outlet pipe is arranged on one side of the plunger pump standby unit and one side of the plunger pump unit, and a liquid outlet pipe is arranged on the other side of the skid-mounted base. The skid-mounted liquid filter has the beneficial effects that the filter cartridge and the supporting top seat are arranged, so that liquid entering the sealing cover and the fixed barrel through the low-pressure liquid inlet hose is filtered through the filter cartridge, the filtered liquid is discharged through the water outlet pipe in the sealing seat, and impurities are cleaned; and by arranging the filter screen, impurities in liquid are cleaned for multiple times, impurity treatment on the liquid is facilitated, the stability of the pump during working is improved, and the service life of the pump during working is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of skid-mounted devices, in particular to a skid-mounted device for a high-pressure plunger pump used for oilfield water injection. Background Art

[0002] After the oil field is put into development, as the mining time increases, the energy of the oil layer itself will be continuously consumed, causing the oil layer pressure to continue to drop, underground crude oil to degas in large quantities, viscosity to increase, oil well production to be greatly reduced, and even stop spraying and production, resulting in a large amount of dead oil remaining underground that cannot be extracted. In order to make up for the underground deficit caused by the extraction of crude oil, maintain or increase the oil layer pressure, achieve high and stable production of the oil field, and obtain a higher recovery rate, the oil field must be injected with water, but the existing high-pressure plunger pumps often face high temperature and high pressure working environment, and accumulate a lot of impurities inside, which will cause the plunger pump to have defects such as loud noise and easy failure after working for a long time. Utility Model Content

[0003] The purpose of the utility model is to provide a skid-mounted device for a high-pressure plunger pump for oilfield water injection, so as to solve the problem proposed in the above background technology that the existing high-pressure plunger pumps are often faced with a high-temperature and high-pressure working environment, and a large amount of impurities are accumulated inside, which will cause the plunger pump to have defects such as loud noise and easy failure after working for a long time.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a skid-mounted device for high-pressure plunger pump for oilfield water injection, comprising a skid-mounted base, a plunger pump standby unit is arranged on the top of the skid-mounted base, a plunger pump unit is arranged on the top of the skid-mounted base, a liquid outlet pipe is arranged on one side of the plunger pump standby unit and the plunger pump unit, a filter box is fixedly connected to the top of the skid-mounted base, a shunt pipe is fixedly connected to one side of the plunger pump standby unit and the plunger pump unit, a low-pressure pneumatic shut-off valve is installed on the shunt pipe, a plunger pump control valve is installed on the shunt pipe, and a connection is fixedly connected to one side of the shunt pipe. Pipe, one end of the connecting pipe is fixedly connected to the filter box, a closing plate is installed on the top of the filter box by bolts, a low-pressure liquid inlet hose is fixedly connected to the inner side of the closing plate, one end of the low-pressure liquid inlet hose is fixedly connected to a closing cover, the inside of the filter box is fixedly connected to a fixed barrel, the closing cover and the fixed barrel are connected by bolts, the inside of the fixed barrel is fixedly connected to a sealing seat, a filter cartridge is installed on the outside of the sealing seat, a water outlet pipe is fixedly connected to the inside of the sealing seat, the water outlet pipe is fixedly connected to the filter box, and a filter screen matching the water outlet pipe and the connecting pipe is installed inside the filter box.

[0005] As a preferred solution of the utility model: a fixing plate is installed inside the filter box, the bottom of the fixing plate is fixedly connected to the filter screen, the top of the fixing plate is fixedly connected to a mounting plate, and the mounting plate and the filter box are connected by bolts.

[0006] As a preferred solution of the utility model: the top of the filter cartridge is fixedly connected with a supporting top seat.

[0007] As a preferred solution of the utility model: a main liquid inlet valve is installed on the top of the skid-mounted base.

[0008] As a preferred solution of the utility model: one end of the low-pressure liquid inlet hose is connected to the main liquid inlet valve.

[0009] As a preferred solution of the utility model: one end of the main liquid inlet valve is fixedly connected to a main liquid inlet pipe, the liquid outlet pipe is fixedly connected to a liquid return pipe, and one end of the liquid return pipe is connected to the main liquid inlet valve.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a filter cartridge and a support top seat, thereby realizing that the liquid enters the closing cover and the fixed barrel through the low-pressure liquid inlet hose, is filtered through the filter cartridge, and is discharged through the outlet pipe in the sealing seat after filtration to clean up impurities. By providing a filter net, impurities in the liquid are cleaned multiple times, which facilitates the impurity treatment of the liquid and improves the stability and service life of the pump during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a top view of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the filter box of the utility model;

[0013] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0014] In the figure: 1. Skid-mounted base; 2. Plunger pump spare unit; 3. Plunger pump unit; 4. Liquid outlet pipe; 5. Liquid return pipe; 6. Low-pressure pneumatic shut-off valve; 7. Plunger pump control valve; 8. Diverter pipe; 9. Filter box; 10. Low-pressure liquid inlet hose; 11. Main liquid inlet valve; 12. Main liquid inlet pipe; 13. Closing plate; 14. Closing cover; 15. Fixed barrel; 16. Filter cartridge; 17. Support top seat; 18. Sealing seat; 19. Water outlet pipe; 20. Filter screen; 21. Mounting plate; 22. Fixed plate; 23. Connecting pipe. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figures 1 to 3 The utility model provides a technical solution: a skid-mounted device for high-pressure plunger pump for oilfield water injection, comprising a skid-mounted base 1, a plunger pump standby unit 2 is arranged on the top of the skid-mounted base 1, a plunger pump unit 3 is arranged on the top of the skid-mounted base 1, a liquid outlet pipe 4 is arranged on one side of the plunger pump standby unit 2 and the plunger pump unit 3, a filter box 9 is fixedly connected to the top of the skid-mounted base 1, a shunt pipe 8 is fixedly connected to one side of the plunger pump standby unit 2 and the plunger pump unit 3, a low-pressure pneumatic shut-off valve 6 is installed on the shunt pipe 8, a plunger pump control valve 7 is installed on the shunt pipe 8, a connecting pipe 23 is fixedly connected to one side of the shunt pipe 8, one end of the connecting pipe 23 is fixedly connected to the filter box 9, a closing plate 13 is installed on the top of the filter box 9 by bolts, and a low-pressure inlet is fixedly connected to the inner side of the closing plate 13 A liquid hose 10, one end of the low-pressure liquid inlet hose 10 is fixedly connected with a closing cover 14, a fixed barrel 15 is fixedly connected inside the filter box 9, the closing cover 14 and the fixed barrel 15 are connected by bolts, a sealing seat 18 is fixedly connected inside the fixed barrel 15, a filter cartridge 16 is installed on the outside of the sealing seat 18, an outlet pipe 19 is fixedly connected inside the sealing seat 18, the outlet pipe 19 is fixedly connected to the filter box 9, a filter screen 20 matched with the outlet pipe 19 and a connecting pipe 23 is installed inside the filter box 9, the low-pressure liquid inlet hose 10 enters the closing cover 14 and the fixed barrel 15, the impurities are filtered by the filter cartridge 16, and then pumped through the outlet pipe 19 in the sealing seat 18, and then secondary filtration is performed with the filter screen 20, thereby improving the filtering effect.

[0017] Among them, a fixing plate 22 is installed inside the filter box 9, the bottom of the fixing plate 22 is fixedly connected to the filter screen 20, and the top of the fixing plate 22 is fixedly connected to the mounting plate 21. The mounting plate 21 and the filter box 9 are connected by bolts. By disassembling the mounting plate 21, the fixing plate 22 and the filter screen 20 can be taken out and disassembled from the filter box 9, and the filter screen 20 can be cleaned.

[0018] The top of the filter cartridge 16 is fixedly connected with a supporting top seat 17 .

[0019] A main liquid inlet valve 11 is installed on the top of the skid-mounted base 1, and the liquid inlet state is controlled and processed by the main liquid inlet valve 11.

[0020] One end of the low-pressure liquid inlet hose 10 is connected to the main liquid inlet valve 11 .

[0021] Among them, one end of the main liquid inlet valve 11 is fixedly connected to the main liquid inlet pipe 12, the liquid outlet pipe 4 is fixedly connected to the return liquid pipe 5, one end of the return liquid pipe 5 is connected to the main liquid inlet valve 11, and the liquid inlet is controlled and processed through the main liquid inlet valve 11.

[0022] Specifically, when in use, liquid is pumped into the low-pressure liquid inlet hose 10 through the main liquid inlet valve 11, enters the closing cover 14 and the fixed barrel 15 through the low-pressure liquid inlet hose 10, filters impurities through the filter cartridge 16, and then is pumped through the outlet pipe 19 in the sealing seat 18, and is secondary filtered through the filter net 20 at the bottom of the fixed plate 22 installed in the filter box 9, the impurities are cleaned, and then discharged through the connecting pipe 23 and enter the diversion pipe 8 for transportation.

[0023] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A skid-mounted device for a high-pressure plunger pump for oilfield water injection, comprising a skid-mounted base (1), characterized in that: A plunger pump standby unit (2) is provided on the top of the skid-mounted base (1), a plunger pump unit (3) is provided on the top of the skid-mounted base (1), a liquid outlet pipe (4) is provided on one side of the plunger pump standby unit (2) and the plunger pump unit (3), a filter box (9) is fixedly connected to the top of the skid-mounted base (1), a shunt pipe (8) is fixedly connected to one side of the plunger pump standby unit (2) and the plunger pump unit (3), a low-pressure pneumatic shut-off valve (6) is installed on the shunt pipe (8), a plunger pump control valve (7) is installed on the shunt pipe (8), a connecting pipe (23) is fixedly connected to one side of the shunt pipe (8), one end of the connecting pipe (23) is fixedly connected to the filter box (9), and the top of the filter box (9) is bolted. A closing plate (13) is installed, a low-pressure liquid inlet hose (10) is fixedly connected to the inner side of the closing plate (13), one end of the low-pressure liquid inlet hose (10) is fixedly connected to a closing cover (14), the interior of the filter box (9) is fixedly connected to a fixed barrel (15), the closing cover (14) and the fixed barrel (15) are connected by bolts, the interior of the fixed barrel (15) is fixedly connected to a sealing seat (18), the outer side of the sealing seat (18) is installed with a filter cartridge (16), the interior of the sealing seat (18) is fixedly connected to a water outlet pipe (19), the water outlet pipe (19) is fixedly connected to the filter box (9), and the interior of the filter box (9) is installed with a filter screen (20) that cooperates with the water outlet pipe (19) and the connecting pipe (23).

2. The skid-mounted device for high-pressure plunger pump for oilfield water injection according to claim 1, characterized in that: A fixing plate (22) is installed inside the filter box (9), the bottom of the fixing plate (22) is fixedly connected to the filter screen (20), the top of the fixing plate (22) is fixedly connected to a mounting plate (21), and the mounting plate (21) is connected to the filter box (9) by bolts.

3. The skid-mounted device for high-pressure plunger pump for oilfield water injection according to claim 1, characterized in that: The top of the filter cartridge (16) is fixedly connected to a supporting top seat (17).

4. The skid-mounted device for high-pressure plunger pump for oilfield water injection according to claim 1, characterized in that: A main liquid inlet valve (11) is installed on the top of the skid-mounted base (1).

5. The skid-mounted device for high-pressure plunger pump for oilfield water injection according to claim 4, characterized in that: One end of the low-pressure liquid inlet hose (10) is connected to the main liquid inlet valve (11).

6. The skid-mounted device for high-pressure plunger pump for oilfield water injection according to claim 4, characterized in that: One end of the main liquid inlet valve (11) is fixedly connected to a main liquid inlet pipe (12), and the liquid outlet pipe (4) is fixedly connected to a liquid return pipe (5), and one end of the liquid return pipe (5) is connected to the main liquid inlet valve (11).

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