Underground multi-stage liquid pumping device

Abstract

The utility model discloses an underground multistage liquid pumping device, and relates to the technical field of hydraulic pumps, the underground multistage liquid pumping device comprises a supporting seat, a hydraulic pump and a motor matched with the hydraulic pump are arranged at the upper end of the supporting seat, and the supporting seat is fixedly connected with an outer protection frame arranged on the outer side wall of the hydraulic pump; the multiple outer protection frames are arranged in the length direction of the hydraulic pump. The supporting seat comprises an upper supporting plate and a lower supporting plate, an elastic cushion is arranged between the upper supporting plate and the lower supporting plate, and a plurality of first elastic pieces are arranged on the side, close to the lower supporting plate, of the elastic cushion. A dual vibration reduction system is formed through the design of the elastic cushion and the first elastic piece between the upper supporting plate and the lower supporting plate, and the elastic cushion has good compression resilience performance and can effectively absorb high-frequency vibration generated when the hydraulic pump works. When the hydraulic pump works, instantaneous impact force is dispersed and absorbed through deformation of the elastic cushion and stretching and retracting of the first elastic piece, and the impact resistance is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of hydraulic pump technology, and in particular to a downhole multi-stage liquid pumping device. Background Technology

[0002] Multistage hydraulic pumping refers to the process of using a multistage pump to transport liquids. A multistage pump is a type of centrifugal pump, characterized by multiple impellers and guide vanes connected in series inside the pump body. These impellers and guide vanes work together to pressurize the liquid multiple times, thereby achieving efficient and high-pressure liquid transport.

[0003] Existing liquid pumps generate mechanical vibrations during operation due to impeller rotation imbalance, fluid pressure pulsation, etc. Continuous vibrations can lead to mechanical wear of internal pump components. Utility Model Content

[0004] The purpose of this application is to provide a downhole multi-stage liquid pumping device to improve the vibration problem generated during the operation of hydraulic pumps.

[0005] This application provides a downhole multi-stage liquid pumping device, which adopts the following technical solution:

[0006] A downhole multi-stage liquid pumping device includes a support base. A hydraulic pump and a motor cooperating with the hydraulic pump are installed at the upper end of the support base. An outer protective frame is fixedly connected to the support base and is provided on the outer side wall of the hydraulic pump. Several outer protective frames are provided along the length direction of the hydraulic pump. The support base includes an upper support plate and a lower support plate. An elastic pad is provided between the upper support plate and the lower support plate. Several elastic elements are provided on the side of the elastic pad near the lower support plate.

[0007] By adopting the above technical solution, the design of the elastic pad between the upper and lower support plates and the elastic element one forms a dual vibration reduction system. The elastic pad has good compression and rebound performance, which can effectively absorb the high-frequency vibration generated when the hydraulic pump is working. When the hydraulic pump is working, the deformation of the elastic pad and the expansion and contraction of the elastic element one disperse and absorb the instantaneous impact force, significantly improving the impact resistance and protecting the internal components of the hydraulic pump.

[0008] Optionally, the outer protective frame is provided with an elastic protective layer on the side near the hydraulic pump.

[0009] By adopting the above technical solution, the design of the elastic protective layer can absorb the vibration generated when the hydraulic pump is working. In addition, it can reduce the friction between the outer protective frame and the hydraulic pump.

[0010] Optionally, the elastic protective layer has several elastic protrusions on the side near the outer protective frame, and the outer protective frame has several fixing grooves that are adapted to the elastic protrusions.

[0011] By adopting the above technical solution, elastic protrusions are designed in the elastic protective layer. The elastic protrusions can be embedded in the fixing groove, making the elastic protective layer easy to replace without the need for tools to remove it, thus improving work efficiency.

[0012] Optionally, the outer protective frame includes an upper protective frame and a lower protective frame. Both ends of the upper and lower protective frames are fixedly connected with lifting lugs. The lifting lugs are provided with bolt holes. The upper and lower protective frames are connected to the corresponding bolt holes with a screw rod inserted. The screw rod is threaded with a first connecting nut for fixing the two lifting lugs.

[0013] By adopting the above technical solution, the outer protective frame is designed as a separable upper and lower protective frame structure, with the two parts connected by screws, which makes the hydraulic pump easy to install. In addition, this design allows the elastic protective layer to be disassembled and replaced.

[0014] Optionally, the screw is threaded with second connecting nuts at both ends of the first connecting nut, and the first connecting nut and the second connecting nut abut against each other along the axial direction of the screw.

[0015] By adopting the above technical solution, the design of the second connecting nut avoids the problem of the first connecting nut loosening. The first connecting nut and the second connecting nut can resist the vibration and impact of the hydraulic pump during operation by continuously applying axial preload, thus preventing the first connecting nut from loosening.

[0016] Optionally, the upper support plate is provided with elastic blocks at its four corners, and the lower support plate is provided with mounting grooves that are adapted to the elastic blocks.

[0017] By adopting the above technical solution, elastic blocks are designed at the four corners of the upper support plate and mounting grooves are designed on the lower support plate, so that the elastic blocks of the upper support plate can move within the mounting grooves of the lower support plate, and the upper and lower support plates will not move relative to each other. When subjected to the vibration of the hydraulic pump, the energy can be absorbed through the elastic deformation of the elastic blocks.

[0018] Optionally, an elastic element two is provided at one end of the elastic block located in the mounting groove.

[0019] By adopting the above technical solution, the design of the second elastic element can reduce the impact force generated when the hydraulic pump vibrates during operation, and increase the vibration reduction performance.

[0020] Optionally, a rubber column is provided inside the elastic element along its contraction direction.

[0021] By adopting the above technical solution, the design of the rubber column enables the elastic element to effectively avoid radial deformation when subjected to pressure or tension, thereby increasing the stability and durability of the elastic element.

[0022] In summary, this application includes at least one of the following beneficial technical effects of downhole multi-stage liquid pumping devices:

[0023] 1. The design of the elastic pad between the upper and lower support plates and the elastic element one forms a dual vibration damping system. The elastic pad has good compression and rebound performance, which can effectively absorb the high-frequency vibration generated when the hydraulic pump is working. When the hydraulic pump is working, the instantaneous impact force is dispersed and absorbed through the deformation of the elastic pad and the expansion and contraction of the elastic element one, which significantly improves the impact resistance performance.

[0024] 2. Elastic blocks are designed at the four corners of the upper support plate, and mounting grooves are designed on the lower support plate. This allows the elastic blocks of the upper support plate to move within the mounting grooves of the lower support plate, preventing relative movement between the upper and lower support plates. When subjected to vibration from the hydraulic pump, energy can be absorbed through the elastic deformation of the elastic blocks.

[0025] 3. The design of the second connecting nut avoids the problem of the first connecting nut loosening. The first connecting nut and the second connecting nut can resist the vibration and impact of the hydraulic pump during operation by continuously applying axial preload, thus preventing the first connecting nut from loosening. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a downhole multi-stage liquid pumping device according to an embodiment of this application;

[0027] Figure 2 yes Figure 1 Enlarged view of A in the middle;

[0028] Figure 3 This is a structural schematic diagram of an downhole multi-stage liquid pumping device according to an embodiment of this application, showing the elastic protrusion and the fixing groove;

[0029] Figure 4 This is a schematic diagram illustrating the structure of an elastic block and an elastic element two in a downhole multi-stage liquid pumping device according to an embodiment of this application.

[0030] In the diagram, 1. Support base; 11. Upper support plate; 111. Elastic block; 12. Lower support plate; 121. Mounting groove; 13. Elastic component two; 2. Hydraulic pump; 3. Motor; 4. Outer protective frame; 41. Upper half of the protective frame; 42. Lower half of the protective frame; 43. Elastic protective layer; 431. Elastic protrusion; 44. Fixing groove; 45. Lifting lug; 46. Screw; 461. First connecting nut; 462. Second connecting nut; 5. Elastic pad; 6. Elastic component one; 61. Rubber column. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0032] A downhole multi-stage liquid pumping device, referring to Figure 1 The system includes a support base 1, with a hydraulic pump 2 and a motor 3 cooperating with the hydraulic pump 2 mounted on the upper end of the support base 1. The motor 3 is fixed to the support base with bolts. An outer protective frame 4 is fixedly connected to the support base 1 and is located on the outer side wall of the hydraulic pump 2. Several outer protective frames 4 are arranged along the length of the hydraulic pump 2. In this embodiment, the number of outer protective frames 4 is two. The support base 1 includes an upper support plate 11 and a lower support plate 12. An elastic pad 5 is provided between the upper support plate 11 and the lower support plate 12. The elastic pad 5 is made of rubber. Several elastic elements 6 are provided on the side of the elastic pad 5 near the lower support plate 12. The elastic elements 6 are springs. One end of the elastic pad 5 is glued to the upper support plate 11, and the other end of the elastic pad 5 is connected to the elastic elements 6 by screws. The elastic elements 6 are connected to the lower support plate 12 by screws. A rubber column 61 is provided inside the elastic element 6 along its contraction direction. One end of the rubber column 61 is connected to the lower support plate 12 by adhesive bonding, and the other end of the rubber column 61 is connected to the elastic pad 5 by adhesive bonding.

[0033] Reference Figure 2 The outer protective frame 4 includes an upper protective frame 41 and a lower protective frame 42. Both ends of the upper and lower protective frames 41 and 42 are fixedly connected to lifting lugs 45. The lifting lugs 45 are welded to the upper and lower protective frames 41 and 42. Bolt holes are provided in the lifting lugs 45. A screw 46 is inserted through the corresponding bolt holes in both the upper and lower protective frames 41 and 42. The screw 46 is threaded with a first connecting nut 461 for fixing the two lifting lugs 45. Second connecting nuts 462 are threaded to both ends of the screw 46 at the ends of the first connecting nut 461. The first connecting nut 461 and the second connecting nut 462 abut against each other along the axial direction of the screw 46 to prevent the first connecting nut 461 from loosening.

[0034] Reference Figure 3 An elastic protective layer 43, made of rubber, is provided on the side of the outer protective frame 4 near the hydraulic pump 2. Several elastic protrusions 431 are provided on the side of the elastic protective layer 43 near the outer protective frame 4. In this embodiment, there are four elastic protrusions 431. The outer protective frame 4 is provided with several fixing grooves 44 that fit the elastic protrusions 431. In this embodiment, there are four fixing grooves 44. The elastic protrusions 431 can be replaced without tools, making it convenient and quick.

[0035] Reference Figure 1 and Figure 4The upper support plate 11 has elastic blocks 111 at its four corners. The elastic blocks 111 are made of rubber and are connected to the upper support plate 11 and the elastic blocks 111 with glue. The lower support plate 12 has mounting grooves 121 that fit the elastic blocks 111, preventing relative movement between the upper support plate 11 and the lower support plate 12. One end of the elastic block 111 located in the mounting groove 121 has a second elastic element 13, which is a spring. The second elastic element 13 is connected to the elastic block 111 with screws, reducing the impact force generated when the hydraulic pump 2 vibrates during operation and increasing vibration damping performance.

[0036] The implementation principle of this application embodiment is as follows: The worker places the hydraulic pump 2 inside the lower half of the protective frame 42, and then places the upper half of the protective frame 41 on top. The worker then tightens the first connecting nut 461 and the second connecting nut 462. When the hydraulic pump 2 is working, the elastic pad 5 absorbs the high-frequency vibration generated by the hydraulic pump 2. The expansion and contraction of the elastic element 6 disperses and absorbs the instantaneous impact force, protecting the internal components of the hydraulic pump 2.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A downhole multi-stage liquid pumping device, characterized in that: The device includes a support base (1), on which a hydraulic pump (2) and a motor (3) cooperating with the hydraulic pump (2) are provided. The support base (1) is fixedly connected to an outer protective frame (4) provided on the outer side wall of the hydraulic pump (2). Several outer protective frames (4) are provided along the length of the hydraulic pump (2). The support base (1) includes an upper support plate (11) and a lower support plate (12). An elastic pad (5) is provided between the upper support plate (11) and the lower support plate (12). Several elastic elements (6) are provided on the side of the elastic pad (5) near the lower support plate (12).

2. The downhole multi-stage liquid pumping device according to claim 1, characterized in that: An elastic protective layer (43) is provided on the side of the outer protective frame (4) near the hydraulic pump (2).

3. The downhole multi-stage liquid pumping device according to claim 2, characterized in that: The elastic protective layer (43) has several elastic protrusions (431) on the side near the outer protective frame (4), and the outer protective frame (4) has several fixing grooves (44) that are adapted to the elastic protrusions (431).

4. The downhole multi-stage liquid pumping device according to claim 1, characterized in that: The outer protective frame (4) includes an upper protective frame (41) and a lower protective frame (42). Both ends of the upper protective frame (41) and the lower protective frame (42) are fixedly connected with lifting lugs (45). The lifting lugs (45) are provided with bolt holes. The upper protective frame (41) and the lower protective frame (42) are connected to the corresponding bolt holes and a screw (46) is inserted. The screw (46) is threadedly connected to a first connecting nut (461) for fixing the two lifting lugs (45).

5. A downhole multi-stage liquid pumping device according to claim 4, characterized in that: The screw (46) is threaded to both ends of the first connecting nut (461) with a second connecting nut (462), and the first connecting nut (461) and the second connecting nut (462) abut against each other along the axial direction of the screw (46).

6. The downhole multi-stage liquid pumping device according to claim 1, characterized in that: The upper support plate (11) is provided with elastic blocks (111) at its four corners, and the lower support plate (12) is provided with mounting grooves (121) that are adapted to the elastic blocks (111).

7. A downhole multi-stage liquid pumping device according to claim 6, characterized in that: The elastic block (111) is provided with an elastic element two (13) at one end located in the mounting groove (121).

8. A downhole multi-stage liquid pumping device according to claim 1, characterized in that: A rubber column (61) is provided inside the elastic element (6) along its contraction direction.

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