Polymer injection pump with novel sealing structure

Abstract

The polymer injection pump with the novel sealing structure comprises a polymer injection pump body, a pump outlet is fixedly connected to the front end of the polymer injection pump body, a pump connecting pipe is arranged at the outward end of the pump outlet, a first connecting flange is fixedly connected to the outer ring of the tail end of the pump outlet, and a second connecting flange is fixedly connected to the outer ring of the tail end of the pump outlet. A sealing ring is fixedly connected to the outer side of the first connecting flange, a second connecting flange is fixedly connected to the outer ring of the inward end of the pump connecting pipe, a sealing groove is formed in the outer side of the second connecting flange, evenly-distributed springs are fixedly connected into the sealing groove, and sealing rings are fixedly connected to the outward ends of the springs. Mounting sleeves are arranged at the upper ends and the lower ends of the first connecting flange and the second connecting flange. According to the pump connecting pipe, the two mounting sleeves are mounted outside the first connecting flange and the second connecting flange, and the two connecting flanges can be fixedly mounted in cooperation with the bolts, so that the pump connecting pipe can be conveniently mounted or dismounted.

Description

Technical Field

[0001] This utility model relates to the field of polymer injection pumps, and in particular to a polymer injection pump with a novel sealing structure. Background Technology

[0002] As oilfields age, the energy of the oil reservoir is continuously depleted after years of extraction, leading to a decline in reservoir pressure and reduced well production. This results in a large amount of unrecoverable dead oil. A common method to extract oil is through water injection, which involves injecting large amounts of water underground. However, the recovered oil often contains up to 90% water. After oil-water separation, the oil-bearing water is injected underground again to prevent surface contamination. This repeated injection and extraction process increases costs and significantly reduces production. Polyacrylamide injection pumps, on the other hand, can meet the needs of multiple extraction operations. They inject polyacrylamide underground, using the polymer to drive the oil reservoir to the well for extraction.

[0003] Because of the heavy load of the polymer injection pump, the pump pipe is prone to damage and has a short lifespan. Replacing it during use is quite troublesome, and the connection of the pump pipe does not have a sealing structure, thus failing to guarantee the sealing performance of the connection between the polymer injection pump pipe and the connection. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a polymer injection pump with a novel sealing structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a polymer injection pump with a novel sealing structure, comprising a polymer injection pump body, a pump outlet fixedly connected to the front end of the pump body, a pump connecting pipe provided at the outward end of the pump outlet, a first connecting flange fixedly connected to the outer ring of the pump outlet end, a sealing ring fixedly connected to the outer side of the first connecting flange, a second connecting flange fixedly connected to the outer ring of the inward end of the pump connecting pipe, a sealing groove provided on the outer side of the second connecting flange, a uniformly distributed spring fixedly connected in the sealing groove, a sealing ring fixedly connected to the outward end of the spring, mounting sleeves provided at the upper and lower ends of the first and second connecting flanges, trapezoidal grooves provided on the inner sides of the two mounting sleeves, connecting blocks fixedly connected to both ends of the two mounting sleeves, through holes provided in the connecting blocks, and bolts provided in the through holes.

[0006] As a further description of the above technical solution:

[0007] The sealing ring is disposed inside the sealing groove and outside the sealing ring.

[0008] As a further description of the above technical solution:

[0009] The sealing ring is disposed within the sealing groove.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the trapezoidal groove is slidably connected to the outer walls of the first connecting flange and the second connecting flange.

[0012] As a further description of the above technical solution:

[0013] A nut is threaded below the outer ring of the bolt, and the nut is located on the outside of the connecting block.

[0014] As a further description of the above technical solution:

[0015] The bottom of the polymer injection pump body is fixedly connected to a base.

[0016] As a further description of the above technical solution:

[0017] The bolt passes through and slides into the through hole.

[0018] This utility model has the following beneficial effects:

[0019] In this invention, the pump outlet, pump connecting pipe, first connecting flange, sealing ring, second connecting flange, sealing groove, spring, sealing ring, mounting sleeve, and trapezoidal groove work together. By installing two mounting sleeves on the outside of the first and second connecting flanges, and using bolts, the two connecting flanges can be fixedly installed, thus facilitating the installation or disassembly of the pump connecting pipe. Furthermore, the trapezoidal groove tightens as it comes into contact with the outside of the first and second connecting flanges, and together with the spring and sealing ring, it improves the sealing performance at the connection between the pump connecting pipe and the pump outlet, thereby enhancing the installation effect. Attached Figure Description

[0020] Figure 1 This is a perspective view of a polymer injection pump with a novel sealing structure proposed in this utility model;

[0021] Figure 2 Exploded view of the pump connecting pipe of a polymer injection pump with a novel sealing structure proposed in this utility model;

[0022] Figure 3 This is a cross-sectional view of the mounting sleeve of a polymer injection pump with a novel sealing structure proposed in this utility model.

[0023] Legend:

[0024] 1. Polymer injection pump body; 2. Pump outlet; 3. Pump connecting pipe; 4. First connecting flange; 5. Sealing ring; 6. Second connecting flange; 7. Sealing groove; 8. Spring; 9. Sealing ring; 10. Mounting sleeve; 11. Trapezoidal groove; 12. Connecting block; 13. Bolt; 14. Nut; 15. Base; 16. Through hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Reference Figure 1-3This utility model provides an embodiment of a polymer injection pump with a novel sealing structure, comprising a polymer injection pump body 1, with a pump outlet 2 fixedly connected to the front end of the pump body 1 for convenient discharge. A pump connecting pipe 3 is provided at the outward end of the pump outlet 2, and a first connecting flange 4 is fixedly connected to the outer ring of the end of the pump outlet 2 for convenient installation and fixation. A sealing ring 5 is fixedly connected to the outer side of the first connecting flange 4, and the sealing ring 5 cooperates with a sealing groove 7 to provide a seal. A second connecting flange 6 is fixedly connected to the outer ring of the inward end of the pump connecting pipe 3. Both the second connecting flange 6 and the first connecting flange 4 have inclined surfaces on opposite sides that cooperate with trapezoidal grooves 11. A sealing groove 7 is provided on the outer side of the second connecting flange 6, and evenly distributed springs 8 are fixedly connected within the sealing groove 7. A sealing ring 9 is fixedly connected to the outward end of each spring 8. The sealing ring 9 can contract within the sealing groove 7 when the spring 8 is compressed. Both the first connecting flange 4 and the second connecting flange 6 are provided with mounting sleeves 10 at their upper and lower ends. The two mounting sleeves 10 allow for the fixed installation of the connecting flanges. Trapezoidal grooves 11 are provided on the inner side of each mounting sleeve 10, allowing for better locking of the first connecting flange 4 and the second connecting flange 6. Connecting blocks 12 are fixedly connected to both ends of each mounting sleeve 10, serving as a connection. Through holes 16 are formed within the connecting blocks 12, and bolts 13 are installed within these through holes 16 to facilitate locking of the two mounting sleeves 10.

[0028] A sealing ring 5 is positioned within the sealing groove 7 and outside the sealing ring 9, facilitating its insertion into the sealing groove 7. The sealing ring 9 is positioned within the sealing groove 7. The inner wall of the trapezoidal groove 11 is slidably connected to the outer walls of the first connecting flange 4 and the second connecting flange 6. A nut 14 is threaded below the outer ring of the bolt 13, and the nut 14 is positioned outside the connecting block 12, allowing for the locking of the two mounting sleeves 10. A base 15 is fixedly connected to the bottom of the polymer injection pump body 1, facilitating its installation. The bolt 13 passes through and is slidably connected to the through hole 16.

[0029] Working principle: When installing the pump connecting pipe 3, align one end of the pump connecting pipe 3 with the first connecting flange 4 of the pump outlet 2 through the second connecting flange 6. Then, insert the sealing ring 5 on the outside of the first connecting flange 4 into the sealing groove 7 on the outside of the second connecting flange 6. At the same time, the elastic force of the spring 8 ensures that the sealing ring 9 and the sealing ring 5 are tightly fitted. When the first connecting flange 4 and the second connecting flange 6 are aligned, place the two mounting sleeves 10 at the upper and lower ends of the first connecting flange 4 and the second connecting flange 6. Then, insert the bolt 13 into the two connecting blocks 12 through the through hole 16. Tighten the two mounting sleeves 10 by turning the nut 14. During the tightening process, the trapezoidal groove 11 will become tighter and tighter when it comes into contact with the outside of the first connecting flange 4 and the second connecting flange 6. Together with the sealing ring 9 and the sealing ring 5, the sealing performance during connection can be guaranteed.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A polymer injection pump with a novel sealing structure, comprising a polymer injection pump body (1), characterized in that: The front end of the injection pump body (1) is fixedly connected to a pump outlet (2). A pump connecting pipe (3) is provided at the outward end of the pump outlet (2). A first connecting flange (4) is fixedly connected to the outer ring of the end of the pump outlet (2). A sealing ring (5) is fixedly connected to the outside of the first connecting flange (4). A second connecting flange (6) is fixedly connected to the outer ring of the inward end of the pump connecting pipe (3). A sealing groove (7) is opened on the outside of the second connecting flange (6). A sealing ring (5) is fixedly connected in the sealing groove (7). A uniformly distributed spring (8) is fixedly connected to a sealing ring (9) at one end of the spring (8). The first connecting flange (4) and the second connecting flange (6) are provided with mounting sleeves (10) at their upper and lower ends. The inner sides of the two mounting sleeves (10) are provided with trapezoidal grooves (11). The two ends of the two mounting sleeves (10) are fixedly connected with connecting blocks (12). The connecting blocks (12) have through holes (16) and bolts (13) are provided through the through holes (16).

2. The polymer injection pump with a novel sealing structure according to claim 1, characterized in that: The sealing ring (5) is disposed inside the sealing groove (7) and is disposed outside the sealing ring (9).

3. A polymer injection pump with a novel sealing structure according to claim 1, characterized in that: The sealing ring (9) is disposed in the sealing groove (7).

4. A polymer injection pump with a novel sealing structure according to claim 1, characterized in that: The inner wall of the trapezoidal groove (11) is slidably connected to the outer walls of the first connecting flange (4) and the second connecting flange (6).

5. A polymer injection pump with a novel sealing structure according to claim 1, characterized in that: The bolt (13) is threaded with a nut (14) below the outer ring, and the nut (14) is located on the outside of the connecting block (12).

6. A polymer injection pump with a novel sealing structure according to claim 1, characterized in that: The bottom of the polymer injection pump body (1) is fixedly connected to a base (15).

7. A polymer injection pump with a novel sealing structure according to claim 1, characterized in that: The bolt (13) passes through and is slidably connected to the through hole (16).

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