Underground axial flow pump mounting structure

Abstract

The utility model relates to the technical field of axial flow pump installation, in particular to an underground axial flow pump installation structure. The axial flow pump comprises an axial flow pump body and a wellhead for the axial flow pump body to pass through; the outer side wall of the axial flow pump body is connected with at least two movable supporting arms in the circumferential direction, and the free ends of the two movable supporting arms can rotate to be connected with each other to form a lifting frame. The free end of the movable support arm can rotate to be connected with the wellhead; the movable support arm which is circumferentially connected with the outer side wall of the axial flow pump body can be used as a support structure during hoisting and can be connected with a wellhead after the axial flow pump body is put into a well, so that the effect of fixing the axial flow pump is achieved; during hoisting, a worker can directly operate the movable support arm connected to a wellhead and control the free end of the movable support arm to rotate to be connected with each other to form a hoisting frame, the worker does not need to go down to the well for operation, potential safety hazards are reduced, and hoisting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of axial flow pump installation technology, and in particular to an installation structure for a downhole axial flow pump. Background Technology

[0002] Axial flow pumps exhibit high hydraulic efficiency under high flow conditions, enabling efficient transport of large volumes of liquid while reducing energy consumption. They are commonly used in wastewater treatment plants. Wastewater treatment plants frequently lower axial flow pumps into wells for operation, minimizing the need for ground space and eliminating the need for complex pumping station facilities. While lowering or retrieving axial flow pumps typically requires lifting equipment such as electric hoists or cranes, existing axial flow pumps often incorporate simple lifting components, as disclosed in patent number CN202122342301.0. The submersible axial flow pump cable protection device has lifting rings on the bracket welded to the axial flow pump to facilitate its hoisting. In practical work, our company has found that when hoisting this type of simple hoisting structure of axial flow pumps from the well, the hook or other connecting parts of the hoisting equipment need to be extended into the well to connect with the hoisting structure. Workers can only operate blindly by descending into the well or on the surface, which not only poses high safety hazards but also affects the hoisting efficiency of the axial flow pump. Furthermore, when the axial flow pump is placed directly in the well, it may shake or shift due to operation or water flow impact, affecting the operation and hoisting of the axial flow pump.

[0003] Based on this, the applicant is considering designing a convenient hoisting installation structure for downhole axial flow pumps. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a convenient hoisting installation structure for downhole axial flow pumps.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A downhole axial flow pump installation structure includes an axial flow pump body and a wellhead through which it passes;

[0007] At least two movable arms are circumferentially connected to the outer side wall of the axial flow pump body. The free ends of the two movable arms can be rotated to connect with each other to form a lifting frame. The free ends of the movable arms can be rotated to connect with the wellhead.

[0008] The working principle and advantages of the downhole axial flow pump installation structure described in this technical solution are as follows:

[0009] When lowering the axial flow pump body downhole, control the free ends of the two movable arms to rotate until they connect to form a lifting frame. Then, use lifting equipment to connect the lifting frame and lower the axial flow pump body from the wellhead into the well. After the axial flow pump body is lowered into the well, rotate the two movable arms to connect with the wellhead. When it is necessary to remove the axial flow pump body from the well, disconnect the free ends of the two movable arms from the wellhead, rotate the free ends of the two movable arms to connect to form a lifting frame, and then use lifting equipment to connect the lifting frame and lift the axial flow pump body from the wellhead out of the well. The outer wall of the axial flow pump body... The movable outrigger serves as both a support structure during hoisting and a means to connect to the wellhead after the axial flow pump body is lowered into the well, thus securing the pump. The free end of the movable outrigger can rotate to connect with the wellhead, effectively preventing the axial flow pump from swaying or shifting during operation or water flow impact, ensuring stable operation. During hoisting, workers can directly operate the movable outrigger connected to the wellhead, controlling its free end to rotate to connect and form a hoisting frame, eliminating the need for workers to go down into the well, reducing safety hazards and improving hoisting efficiency.

[0010] Furthermore, the movable support arm includes a first support plate, a second support plate, and a third support plate. One end of the first support plate is connected to the outer wall of the axial flow pump body, and the other end is hinged to the second support plate. One end of the second support plate is hinged to the first support plate, and the other end is hinged to the third support plate.

[0011] Furthermore, the third support plate of the two movable arms is detachably connected.

[0012] Furthermore, the third support plates of the two movable arms are respectively fixedly connected to magnetically attracted parts on opposite sides.

[0013] Furthermore, the third support plate of each of the two movable arms is provided with a corresponding hoisting hole.

[0014] Furthermore, the first support plate is hinged to the outer wall of the axial flow pump body, and a limiting block is fixedly connected to the outer wall of the axial flow pump body to restrict the rotation of the first support plate toward the axial flow pump body.

[0015] Furthermore, a clamp is connected to the outer wall of the axial flow pump body, the first support plate is hinged to the clamp, and the limiting block is fixedly connected to the clamp.

[0016] Furthermore, the clamp is detachably connected to the outer wall of the axial flow pump body.

[0017] Furthermore, the wellhead includes a fixedly installed well base, a well cover is detachably connected to the top of the well base, and the free section of the movable support arm can be rotated to connect with the well base.

[0018] Furthermore, it also includes a limiting rod, and the top side of the well base is provided with a limiting groove for the third support plate to be inserted. The limiting rod is used to pass through the hoisting hole and the bottom side of the limiting groove in sequence. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the downhole axial flow pump installation structure according to an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a three-dimensional structural diagram of the axial flow pump body according to an embodiment of the present utility model;

[0022] Figure 4 This is a front view structural schematic diagram of the axial flow pump body according to an embodiment of the present utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the clamp and movable support arm in an embodiment of the present utility model. Figure 1 ;

[0024] Figure 6 This is a three-dimensional structural diagram of the clamp and movable support arm in an embodiment of the present utility model. Figure 2 ;

[0025] In the above attached figures:

[0026] 100. Wellhead; 110. Well base; 111. Restriction groove; 120. Well cover; 130. Restriction rod;

[0027] 200. Axial flow pump body; 210. Clamp; 211. Restriction block; 220. Elastic pad; 230. Movable support arm; 231. First support plate; 232. Second support plate; 233. Third support plate; 234. Magnetic suction part; 235. Lifting hole. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0029] Refer to together Figures 1-6 This embodiment provides a downhole axial flow pump installation structure, which includes an axial flow pump body 200 and a wellhead 100 for the pump to pass through;

[0030] At least two movable arms 230 are circumferentially connected to the outer side wall of the axial flow pump body 200. The free ends of the two movable arms 230 can be rotated to connect with each other to form a lifting frame. The free ends of the movable arms 230 can be rotated to connect with the wellhead 100.

[0031] In this embodiment, when the axial flow pump body 200 is lowered into the well, the free ends of the two movable support arms 230 are controlled to rotate and connect with each other to form a lifting frame. The axial flow pump body 200 is then lowered into the well from the wellhead 100 using lifting equipment connected to the lifting frame. After the axial flow pump body 200 is lowered into the well, the two movable support arms 230 are rotated to connect with the wellhead 100. When it is necessary to remove the axial flow pump body 200 from the well, the connection between the free ends of the two movable support arms 230 and the wellhead 100 is released, and the free ends of the two movable support arms 230 are rotated to connect with each other to form a lifting frame. The axial flow pump body 200 is then lifted from the wellhead 100 and moved out of the well using lifting equipment connected to the lifting frame. The movable support arm 230, which is circumferentially connected to the outer wall of the axial flow pump 200, serves as a support structure during hoisting and can also connect to the wellhead 100 after the axial flow pump body 200 is placed in the well, thus fixing the axial flow pump body 200. The free end of the movable support arm 230 can rotate to connect with the wellhead 100, which can effectively prevent the axial flow pump body 200 from shaking or displacing under operation or water flow impact, ensuring the stable operation of the axial flow pump body 200. During hoisting, the operator can directly operate the movable support arm 230 connected to the wellhead 100, controlling its free end to rotate to connect with each other and form a hoisting frame, without the need for the operator to go down into the well, reducing safety hazards and improving hoisting efficiency.

[0032] Preferably, such as Figures 3-6As shown, the movable support arm 230 includes a first support plate 231, a second support plate 232, and a third support plate 233. One end of the first support plate 231 is connected to the outer wall of the axial flow pump body 200, and the other end is hinged to the second support plate 232. One end of the second support plate 232 is hinged to the first support plate 231, and the other end is hinged to the third support plate 233. One end of the first support plate 231 is fixedly connected to the outer wall of the axial flow pump body 200 to ensure a tight fit between the movable support arm 230 and the pump body. The other end is connected to the second support plate 232 by a hinge, allowing the second support plate 232 to rotate within a certain range. One end of the second support plate 232 is hinged to the first support plate 231, and the other end is hinged to the third support plate 233, forming a multi-segment adjustable structure. The multi-segment hinge structure enables flexible adjustment and multi-functionality of the movable support arm 230, which is useful for hoisting the axial flow pump body. When the axial flow pump body 200 is in place, the second support plate 232 of the two movable support arms 230 can be rotated to form an included angle, and the two movable support plates can be rotated to fit together and connect to form a stable lifting frame. The hook of the lifting equipment (such as an electric hoist or crane) can be directly connected to the two connected third support plates 233, which facilitates the stable lifting of the axial flow pump body 200. When the axial flow pump body 200 is lifted to the wellhead 100 and placed in the well, the third support plate 233 can be rotated to connect with the wellhead 100, which can effectively limit the swaying of the axial flow pump body 200 and prevent displacement caused by water flow impact or other external forces, ensuring the stable operation of the axial flow pump body 200 in the well. Specifically, the connection between the first support plate 231, the second support plate 232 and the third support plate 233 can be directly connected using the hinge method commonly used in the prior art.

[0033] Preferably, such as Figures 3-6 As shown, the third support plate 233 of the two movable support arms 230 can be detachably connected; the two third support plates 233 can be quickly disassembled and connected by bolts, buckles or limiting structures, so that the two movable support arms 230 can quickly form or disassemble the lifting frame.

[0034] Preferably, such as Figures 1-6 As shown, magnetic suction parts 234 are fixedly connected to the opposite sides of the third support plates 233 of the two movable support arms 230. The magnetic suction parts 234 are fixedly connected to the opposite sides of the two third support plates 233, for example, by embedded magnets or magnetic suction plates. When the third support plates 233 of the two movable support arms 230 are close together, the magnetic suction parts 234 attract each other by magnetic force to achieve quick connection and positioning. Then the third support plates 233 of the two movable support arms 230 can be connected by bolt structure.

[0035] Preferably, such as Figures 1-6As shown, the third support plate 233 of the two movable arms 230 are respectively provided with corresponding lifting holes 235; the lifting holes 235 are used to connect with the hook or sling of the lifting equipment during the lifting process to realize the stable lifting of the axial flow pump body 200; specifically, the lifting holes 235 are triangular; specifically, the first support plate 231 and the second support plate 232 of the two movable arms 230 can also be respectively provided with corresponding through holes to facilitate connection with lifting components such as hooks, rods, and slings, so as to facilitate the connection of the lifting equipment with multiple heights of the movable arms 230, and the lifting point can be changed during the lifting process to avoid the problem of insufficient lifting stroke.

[0036] Preferably, such as Figures 1-6 As shown, the first support plate 231 is hinged to the outer wall of the axial flow pump body 200, and a limiting block 211 is fixedly connected to the outer wall of the axial flow pump body 200 to restrict the rotation of the first support plate 231 toward the axial flow pump body 200. The hinged connection between the first support plate 231 and the outer wall of the axial flow pump body 200 allows the support arm to rotate freely within a certain angle range. This design can improve the flexibility of the movable support arm 230 and facilitate position adjustment during hoisting and installation. The limiting block 211 is fixedly connected to the outer wall of the axial flow pump body 200 to restrict excessive rotation of the first support plate 231 toward the axial flow pump body 200, which could damage the axial flow pump body 200.

[0037] Preferably, such as Figures 1-6 As shown, a clamp 210 is connected to the outer wall of the axial flow pump body 200. The first support plate 231 is hinged to the clamp 210, and the limiting block 211 is fixedly connected to the clamp 210. The clamp 210 is connected to the outer wall of the axial flow pump body 200. The clamp 210 is used to connect the movable support arm 230 and the limiting block 211, and at the same time provides sufficient mechanical strength. The first support plate 231 and the clamp 210 are connected by a hinge, which allows the movable support arm 230 to rotate freely within a certain angle range, which is convenient for storage and transportation. The use of the clamp 210 simplifies the installation process of the movable support arm 230, and also facilitates subsequent maintenance and replacement.

[0038] Preferably, such as Figures 1-6As shown, the clamp 210 is detachably connected to the outer wall of the axial flow pump body 200; this facilitates the installation and removal of the clamp 210 and its movable support arm 230, while allowing for quick replacement or maintenance as needed. Specifically, the clamp 210 includes two arc-shaped blocks detachably connected by bolts, each arc-shaped block being connected to at least one movable support arm 230. An elastic pad 220 is provided on the inner wall of the clamp 210 to protect the surface of the axial flow pump body 200 and prevent wear caused by direct contact between the clamp 210 and the pump body. More specifically, most existing axial flow pump bodies 200 have a protruding structure on their outer wall that restricts the clamp 210 from detaching from the axial flow pump body 200 from above, preventing the clamp 210 from detaching from the axial flow pump body 200 during hoisting. For axial flow pump bodies 200 without the aforementioned protruding structure, the clamp 210 can be directly fixed to the axial flow pump body 200 by welding or bolts.

[0039] Preferably, such as Figure 1 and Figure 2 As shown, the wellhead 100 includes a fixedly installed well base 110, and a detachable well cover 120 is connected to the top of the well base 110. The free section of the movable support arm 230 can be rotated to connect with the well base 110. The well base 110 can be fixedly installed by pre-embedding, and its stability is ensured by concrete pouring and integration with the civil engineering structure. The well cover 120 is detachably connected to the well base 110 and can be fixed by fastening bolts for easy inspection and maintenance. The well base 110 can provide a stable support platform and a connection platform connected to the free end of the movable support arm 230. The well cover 120 can open and close the well base 110.

[0040] Preferably, such as Figure 1 and Figure 2 As shown, it also includes a limiting rod 130. The top side of the well base 110 is provided with a limiting groove 111 for the third support plate 233 to be inserted. The limiting rod 130 is used to pass through the hoisting hole 235 and the bottom side of the limiting groove 111 in sequence. The third support plate 233 of the movable support arm 230 can be rotated to be inserted into the limiting groove 111 of the well base 110. The limiting rod 130 further restricts the movement and prevents shaking caused by water flow impact or external force during operation. It can also quickly disconnect the third support plate 233 from the well base 110. Specifically, when the well cover 120 is connected to the well base 110, the bottom side of the well cover 120 and the top and bottom sides of the limiting rod 130 can prevent the limiting rod 130 from detaching from the hoisting hole 235 and the limiting groove 111.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A downhole axial flow pump installation structure, characterized in that, This includes the axial flow pump body and the wellhead through which it passes; At least two movable arms are circumferentially connected to the outer side wall of the axial flow pump body. The free ends of the two movable arms can be rotated to connect with each other to form a lifting frame. The free ends of the movable arms can be rotated to connect with the wellhead.

2. The installation structure for a downhole axial flow pump as described in claim 1, characterized in that, The movable support arm includes a first support plate, a second support plate, and a third support plate. One end of the first support plate is connected to the outer wall of the axial flow pump body, and the other end is hinged to the second support plate. One end of the second support plate is hinged to the first support plate, and the other end is hinged to the third support plate.

3. The installation structure for a downhole axial flow pump as described in claim 2, characterized in that, The third support plate of the two movable arms is detachably connected.

4. The installation structure for a downhole axial flow pump as described in claim 3, characterized in that, The third support plates of the two movable arms are respectively fixedly connected to magnetically attracted parts on opposite sides.

5. The installation structure for a downhole axial flow pump as described in claim 2, characterized in that, The third support plate of each of the two movable arms is provided with a corresponding hoisting hole.

6. The installation structure for a downhole axial flow pump as described in claim 2, characterized in that, The first support plate is hinged to the outer wall of the axial flow pump body, and a limiting block is fixedly connected to the outer wall of the axial flow pump body to restrict the first support plate from rotating toward the axial flow pump body.

7. The installation structure for a downhole axial flow pump as described in claim 6, characterized in that, The outer wall of the axial flow pump body is connected to a clamp, the first support plate is hinged to the clamp, and the limiting block is fixedly connected to the clamp.

8. The installation structure for a downhole axial flow pump as described in claim 7, characterized in that, The clamp is detachably connected to the outer wall of the axial flow pump body.

9. The installation structure for a downhole axial flow pump as described in claim 5, characterized in that, The wellhead includes a fixedly installed well base, a well cover is detachably connected to the well base, and the free section of the movable support arm can rotate to connect with the well base.

10. The installation structure for a downhole axial flow pump as described in claim 9, characterized in that, It also includes a limiting rod, and the top side of the well base is provided with a limiting groove for the third support plate to be inserted. The limiting rod is used to pass through the hoisting hole and the bottom side of the limiting groove in sequence.

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