Ground driving device load-bearing box heat dissipation waterproof structure

Abstract

The utility model relates to an oil and gas exploitation technical field, and a ground driving device load bearing box heat dissipation waterproof structure, including load bearing box, heat exchange pipe, air inlet end, exhaust end and heat conducting oil, wherein: load bearing box fixed connection is in well mouth, heat exchange pipe sets up in the inside of load bearing box, and both ends of heat exchange pipe all communicate with load bearing box outside, the tail of air inlet end is bent downward, exhaust end, the tail of exhaust end is bent upward, heat conducting oil fills in load bearing box, heat exchange pipe is immersed in heat conducting oil, the utility model fills heat conducting oil in load bearing box, and sets up heat exchange pipe in heat conducting oil, when working, air flows through the airflow channel that air inlet end, heat exchange pipe and exhaust end constitute, thereby through heat exchange mode and sends out the heat in heat conducting oil, compared with prior art, not only heat dissipation efficiency is higher, and airflow channel and load bearing box internal space are isolated, will not cause the pollution in load bearing box.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction, and in particular to a heat dissipation and waterproof structure for a ground drive device load-bearing box. Background Technology

[0002] The screw pump direct-drive oil production unit is a commonly used oil production device in oilfield production. Its structure includes a motor, a load-bearing box, and sucker rods suspended from the load-bearing box. The load-bearing box contains heavy-load moving parts. These heavy-load moving parts generate a large amount of heat during rotation, which needs to be dissipated promptly; otherwise, it will adversely affect the operation of the equipment and the equipment itself. Therefore, heat dissipation measures are necessary.

[0003] To achieve heat dissipation, the current practice is to install vents on the side walls of the load-bearing box to allow hot air inside to escape. However, this method is not only generally ineffective, but also allows impurities such as sand and rainwater from the external environment to easily enter the load-bearing box. Utility Model Content

[0004] This utility model provides a heat dissipation and waterproof structure for the load-bearing box of a ground drive device. By improving the heat dissipation structure of the load-bearing box, the heat dissipation performance of the load-bearing box and the purpose of dust and water resistance are achieved.

[0005] The technical problem solved by this utility model is achieved by the following technical solution: This utility model provides a heat dissipation and waterproof structure for the load-bearing box of a ground drive device, including:

[0006] The load-bearing box is fixedly connected to the wellhead;

[0007] The heat exchange tubes are installed inside the load-bearing box, and both ends of the heat exchange tubes are connected to the outside of the load-bearing box.

[0008] The intake end is bent downwards;

[0009] The exhaust tip has its end bent upwards.

[0010] The heat transfer oil is filled in the load-bearing box, and the heat exchange tube is immersed in the heat transfer oil.

[0011] As a preferred embodiment, the heat exchange tube is a copper tube.

[0012] As a preferred embodiment, the end of the exhaust head is provided with a conical rain cap, the outer side of the conical rain cap is provided with a rain shield ring, and the inner side of the rain shield ring is provided with an exhaust hole, which can exhaust air from the heat exchange tube.

[0013] As a preferred embodiment, the end of the air intake is connected to a flexible hose that extends downwards.

[0014] As a preferred embodiment, there are at least two heat exchange tubes, which are connected in parallel to form a group and then connected between the air inlet end and the air outlet end.

[0015] As a preferred embodiment, the inner wall of the heat exchange tube is provided with flow guide fins.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model fills the load-bearing box with heat-conducting oil and sets heat exchange tubes in the heat-conducting oil. When working, the air flows through the airflow channel formed by the air inlet end, the heat exchange tube and the exhaust end, thereby dissipating the heat in the heat-conducting oil through heat exchange. Compared with the prior art, it not only has higher heat dissipation efficiency, but also the airflow channel is isolated from the internal space of the load-bearing box, so it will not cause pollution to the inside of the load-bearing box.

[0018] 2. In this utility model, the ends of the air inlet and exhaust ends are bent downwards and upwards respectively, so that the two ends of the airflow channel form a "chimney effect", which can effectively promote the flow of air and further improve the heat dissipation effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure at the end of the exhaust nozzle.

[0021] Figure 3 This is a cross-sectional view of the heat exchanger tube.

[0022] Figure 4 This is a diagram showing the position of the heat exchange tubes inside the load-bearing box.

[0023] Figure 5 This is another diagram showing the location of the heat exchange tubes inside the load-bearing box.

[0024] In the diagram: 1. Load-bearing box; 2. Heat transfer oil; 3. Heat exchanger tube; 4. Exhaust end; 5. Inlet end; 6. Hose; 7. Conical rain cap; 8. Rain guard ring; 9. Exhaust hole; 10. Guide fins. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, this embodiment includes a load-bearing box 1, a heat exchange tube 3, an air inlet end 5, an exhaust end 4, and heat transfer oil 2, wherein:

[0027] The load-bearing box 1 is fixedly connected to the upper end face of the wellhead, and the motor used to drive the downhole screw pump to rotate is vertically installed on the upper end face of the load-bearing box 1.

[0028] The heat exchange tube 3 is installed inside the load-bearing box 1, and both ends of the heat exchange tube 3 are connected to the outside of the load-bearing box 1, thus forming an airflow channel isolated from the internal space of the load-bearing box 1. Figure 4 As shown, in this embodiment, the heat exchange tube 3 is spiral in shape to ensure sufficient heat exchange area and thus ensure heat exchange efficiency.

[0029] The end of the air intake end 5 is bent downwards, and the end of the exhaust end 4 is bent upwards, creating a height difference between the air intake and exhaust ends of the airflow channel. This creates a "chimney effect" at both ends of the airflow channel, effectively promoting airflow and improving heat dissipation.

[0030] The heat transfer oil 2 is filled in the load-bearing box 1. The heat transfer oil 2 can directly absorb the heat generated by the moving parts and conduct some of the heat to the side wall of the load-bearing box 1 through heat transfer, and then dissipate it to the external space. At the same time, the heat exchange tube 3 is immersed in the heat transfer oil 2, which can reduce the temperature of the heat transfer oil 2 more quickly, thereby significantly increasing the heat dissipation efficiency.

[0031] In this embodiment, the heat exchange tube 3 is a copper tube. Copper has good thermal conductivity and corrosion resistance, which is beneficial to further improve the heat dissipation effect and ensure service life.

[0032] like Figure 1 , 2 As shown in this embodiment, a conical rain cap 7 is provided at the end of the exhaust end 4, a rain shield ring 8 is provided on the outer side of the conical rain cap 7, and an exhaust hole 9 is provided on the inner side of the rain shield ring 8. The exhaust hole 9 can discharge air from the heat exchange tube 3. The conical rain cap 7 and the rain shield ring 8 work together to prevent rainwater from flowing into the exhaust end 4.

[0033] like Figure 1 As shown in this embodiment, the end of the air inlet 5 is connected to a flexible hose 6 that serves as an extension hose. The flexible hose 6 extends downward, which can increase the height difference between the air inlet and the air outlet, thereby strengthening the "chimney effect". At the same time, the flexible hose 6 can be bent at will to avoid facilities such as wellheads and well sealers installed below the load-bearing box 1.

[0034] like Figure 5 As shown, in some embodiments, there are at least two heat exchange tubes 3, which are connected in parallel to form a group between the air inlet end 5 and the exhaust end 4. Compared with a single heat exchange tube 3, multiple heat exchange tubes 3 connected in parallel can significantly reduce the flow resistance of the airflow inside the heat exchange tubes 3, making the airflow smoother and the heat dissipation faster.

[0035] like Figure 3 As shown in this embodiment, the inner wall of the heat exchange tube 3 is provided with flow guiding fins 10, which can both guide the flow and increase the heat exchange area.

[0036] Working principle:

[0037] During operation, air flows through the airflow channel formed by the air inlet end 5, heat exchange pipe 3 and exhaust end 4, thereby dissipating the heat in the heat transfer oil 2 through heat exchange. Compared with the existing technology, not only is the heat dissipation efficiency higher, but the airflow channel is also isolated from the internal space of the load-bearing box 1, so it will not cause pollution to the inside of the load-bearing box 1.

Claims

1. A heat dissipation and waterproof structure for a ground drive unit's load-bearing box, characterized in that, include: The load-bearing box (1) is fixedly connected to the wellhead; Heat exchange tube (3) is installed inside the load-bearing box (1), and both ends of the heat exchange tube (3) are connected to the outside of the load-bearing box (1). The intake end (5) is bent downwards at its end; Exhaust end (4), the end of exhaust end (4) is bent upward; Heat transfer oil (2) is filled in the load-bearing box (1), and the heat exchange tube (3) is immersed in the heat transfer oil (2).

2. The heat dissipation and waterproof structure for the load-bearing box of a ground drive device according to claim 1, characterized in that: The heat exchange tube (3) is a copper tube.

3. The heat dissipation and waterproof structure of the ground drive device load-bearing box according to claim 1, characterized in that: The exhaust end (4) is provided with a conical rain cap (7), a rain shield ring (8) is provided on the outside of the conical rain cap (7), and an exhaust hole (9) is provided on the inside of the rain shield ring (8). The exhaust hole (9) can discharge air from the heat exchange tube (3).

4. The heat dissipation and waterproof structure for the load-bearing box of a ground drive device according to claim 1, characterized in that: The end of the air intake (5) is connected to a hose (6) that serves as an extension hose, which extends downward.

5. The heat dissipation and waterproof structure for the load-bearing box of a ground drive device according to claim 1, characterized in that: There are at least two heat exchange tubes (3), and each heat exchange tube (3) is connected in parallel to form a group and then connected between the air inlet end (5) and the exhaust end (4).

6. The heat dissipation and waterproof structure for the load-bearing box of a ground drive device according to claim 1, characterized in that: The inner wall of the heat exchange tube (3) is provided with flow guide fins (10).

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