A detection device for an oil and gas well downhole heating cable

Abstract

The utility model relates to cable detection device technical field, concretely is a kind of oil and gas well downhole heating cable's detection device, including detection device ontology and support frame, the left and right sides of support frame are all set with sliding slot, the inner wall sliding connection of sliding slot has slider, and the slider between left and right sides is equipped with support plate, the bottom of support plate is equipped with cleaning brush, the inner wall of sliding slot is equipped with fixed link, the outside of fixed link is equipped with spring, the slider between one end of spring and installation, and the inner top wall between another end and sliding slot installation;Through drive cleaning brush moves along vertical direction, make it and downhole heating cable surface form close adhesion, clean simultaneously in combination the cable surface by the wiping block between two support frames, to improve the effect of impurity removal, to increase the detection precision of detection device to downward heating cable, to improve the use effect of detection device.

Description

Technical Field

[0001] This utility model relates to the technical field of cable testing devices, and more specifically, to a testing device for downhole heating cables in oil and gas wells. Background Technology

[0002] During oil and gas well extraction, downhole heating cables are key equipment for maintaining well temperature and preventing crude oil from solidifying. Their operating status directly affects production safety and efficiency. To ensure the reliability of heating cables, it is necessary to regularly inspect their insulation, conductors, and sheaths to identify potential faults such as aging, damage, or short circuits.

[0003] Currently, the industry generally uses integrated cleaning function testing devices, which remove attached oil, wax and corrosion products by contacting and rubbing mechanical brushes with the cable surface, thereby ensuring good contact between the testing probe and the cable. However, in actual use, although existing heating cable testing devices can clean impurities on the cable surface with brushes before testing, the brushes wear out severely during long-term operation, and their fit with the cable surface gradually decreases. At the same time, the equipment lacks an automatic compensation mechanism, which cannot ensure contact between the brush and the cable surface, resulting in a gradual decrease in cleaning efficiency, which in turn affects the effectiveness of the testing device. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a detection device for downhole heating cables in oil and gas wells, so as to solve the problem that the lack of an automatic compensation mechanism in the prior art makes it impossible to ensure contact between the brush and the cable surface, resulting in a gradual decrease in cleaning efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a detection device for downhole heating cables of oil and gas wells, comprising a detection device body and a support frame, wherein sliding grooves are provided on both the left and right sides of the support frame, and sliding blocks are slidably connected to the inner walls of the sliding grooves, and a support plate is installed between the sliding blocks on the left and right sides, and a cleaning brush is installed at the bottom of the support plate.

[0006] The inner wall of the slide is equipped with a fixing rod, and a spring is sleeved on the outer side of the fixing rod.

[0007] One end of the spring is installed between the spring and the slider, and the other end is installed between the spring and the inner top wall of the groove. The fixing rod is inserted into the middle of the slider.

[0008] The support plate has movable grooves on both its front and rear sides. A limiting plate is slidably connected to the inner wall of the movable groove. A pin is installed on one side of the limiting plate and an elastic element is installed on the other side. A knob is inserted into the middle of the support plate. Connecting ropes are installed on both the front and rear sides of the lower part of the knob. The bottom of the support plate has mounting grooves on both its front and rear sides. A mounting plate is inserted into the inner wall of the mounting groove. A slot is opened in the middle of the mounting plate.

[0009] The mounting plates on both the front and rear sides are installed on top of the cleaning brush, and the opposite ends of the inserts on both the front and rear sides pass through the mounting groove and are inserted into the inner wall of the groove.

[0010] The elastic elements on the front and rear sides are installed on the inner wall of the moving groove on the adjacent side, and the connecting ropes on the front and rear sides pass through the moving groove at opposite ends and are installed between the ropes and the limiting plate.

[0011] The support plate is slidably connected to the inner wall of the support frame and fits against the inner wall of the support frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In the above solution, the cleaning brush is driven to move vertically so that it fits tightly against the surface of the heating cable. At the same time, the wiping block between the two support frames cleans the surface of the cable, thereby improving the effect of removing impurities. This increases the detection accuracy of the detection device for downward heating cables and improves the effectiveness of the detection device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the support plate structure of this utility model;

[0016] Figure 3 This is a front view of the support frame of this utility model;

[0017] Figure 4 for Figure 3 Cross-sectional view of the structure at point AA;

[0018] Figure 5 for Figure 4 Enlarged view of the structure at point B in the middle;

[0019] Figure 6 This is a schematic diagram of the mounting plate structure of this utility model.

[0020] [Figure Labels]

[0021] 1. Detection device body; 2. Support frame; 3. Fixing rod; 4. Support plate; 5. Knob; 6. Spring; 7. Slide groove; 8. Slider; 9. Cleaning brush; 10. Connecting rope; 11. Moving groove; 12. Elastic element; 13. Limiting plate; 14. Insert post; 15. Mounting plate; 16. Mounting groove; 17. Slot. Detailed Implementation

[0022] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0023] Example 1: Please refer to Figures 1 to 6 This utility model provides a technical solution: a detection device for downhole heating cables in oil and gas wells, comprising a detection device body 1 and a support frame 2. Wiping blocks are installed at the bottom of the support frame 2 on both the front and rear sides. Slide grooves 7 are provided on both the left and right sides of the support frame 2. Sliding sliders 8 are slidably connected to the inner wall of the slide grooves 7. A support plate 4 is installed between the left and right sliding sliders 8. A cleaning brush 9 is installed at the bottom of the support plate 4. The support plate 4 is slidably connected to the inner wall of the support frame 2 and fits against the inner wall of the support frame 2, thereby driving the support plate 4 to move downward, so as to simultaneously drive the cleaning brush 9 to fit tightly against the heating cable.

[0024] Pull the support plate 4 upwards, causing the sliders 8 on both sides to move upwards along the inner wall of the groove 7. Then, the underground heating cable can be passed through the bottom of the cleaning brush 9 and made to fit against the wiping block. At the same time, release the support plate 4 to keep the cleaning brush 9 and the underground heating cable in contact, preventing them from not being able to make contact. Then, by using the cooperation between the cleaning brush 9 and the wiping block, the surface of the underground heating cable is cleaned, thereby improving the use effect of the detection device body 1.

[0025] Example 2: Based on Example 1, in order to achieve a tight fit between the cleaning brush 9 and the heating cable, a fixing rod 3 is installed on the inner wall of the slide 7, and a spring 6 is sleeved on the outer side of the fixing rod 3. One end of the spring 6 is installed between the slider 8 and the other end is installed between the inner top wall of the slide 7. The elastic force of the spring 6 is used to push the support plate 4 downward and drive the cleaning brush 9 to fit with the heating cable, thereby increasing the cleaning effect. The fixing rod 3 is inserted into the middle of the slider 8, thereby increasing the stability of the support plate 4 when it moves.

[0026] Pull the support plate 4 upwards, causing the sliders 8 on both sides to move upwards along the inner wall of the groove 7. As the sliders 8 move upwards, they compress the spring 6 on the outside of the fixing rod 3, putting it in a compressed state. At this time, the downhole heating cable can be passed through the bottom of the cleaning brush 9 and made to fit against the wiping block. At the same time, release the support plate 4, and use the elastic force of the spring 6 to push the slider 8 downwards, and the support plate 4 slides downwards, thus keeping the cleaning brush 9 and the downhole heating cable in contact and preventing them from not being able to make contact. This utilizes the cooperation between the cleaning brush 9 and the wiping block.

[0027] Example 3: Based on Example 2, to facilitate the replacement of the cleaning brush 9, the support plate 4 has movable grooves 11 on both the front and rear sides. A limiting plate 13 is slidably connected to the inner wall of the movable groove 11. A pin 14 is installed on one side of the limiting plate 13, and an elastic element 12 is installed on the other side. A knob 5 is inserted into the middle of the support plate 4. Connecting ropes 10 are installed on both the front and rear sides of the lower part of the knob 5. Mounting grooves 16 are opened on both the front and rear sides of the bottom of the support plate 4. Mounting plates 15 are inserted into the inner wall of the mounting grooves 16. A slot 17 is opened in the middle of the mounting plates 15. The mounting plates 15 on both the front and rear sides are installed on the top of the cleaning brush 9, thus facilitating the connection between the cleaning brush 9 and the support plate 4. The front and rear insert pins 14 are connected with their opposite ends through the mounting groove 16 and inserted into the inner wall of the slot 17. The insert pins 14 are inserted into the inner wall of the slot 17 to lock the mounting plate 15 and the mounting groove 16 for subsequent disassembly and use. The adjacent sides of the elastic members 12 on the front and rear sides are installed on the inner wall of the moving groove 11. The elastic force of the elastic members 12 is used to keep one end of the insert pin 14 in the slot 17. The opposite ends of the connecting ropes 10 on the front and rear sides are connected through the moving groove 11 and installed between the limiting plate 13. By rotating the knob 5, the connecting ropes 10 on both sides are wound around the outside of the limiting plate 13 to pull the two limiting plates 13 in opposite directions.

[0028] First, turn knob 5 to gradually wrap the two connecting ropes 10 around its outer side, thereby simultaneously pulling the front and rear limit plates 13 to move towards each other along the inner wall of the moving groove 11 and squeezing the elastic element 12, so that it is compressed in the inner wall of the moving groove 11. At this time, the insertion post 14 disengages from the slot 17, and then the cleaning brush 9 can be pulled down, which will cause the two mounting plates 15 on its top to disengage from the mounting groove 16, so that the operator can easily remove and replace the cleaning brush 9. After that, reset the replaced cleaning brush 9, and at the same time, drive the mounting plate 15 to insert into the inner wall of the mounting groove 16. At this time, release knob 5, and then use the elastic force of the elastic element 12 to push the limit plate 13 to reset, and drive the insertion post 14 to continue to be inserted between the slot 17 for subsequent disassembly and maintenance.

[0029] The working process of this utility model is as follows:

[0030] When in use, pull the support plate 4 upward, causing the sliders 8 on both sides to move upward along the inner wall of the groove 7. As the sliders 8 move upward, they compress the spring 6 on the outside of the fixing rod 3, putting it in a compressed state. At this time, the underground heating cable can be passed through the bottom of the cleaning brush 9 and made to fit with the wiping block. At the same time, release the support plate 4, and use the elastic force of the spring 6 to push the slider 8 downward and the support plate 4 to slide downward, so that the cleaning brush 9 and the underground heating cable can be kept in contact, preventing them from not being able to make contact. By using the cooperation between the cleaning brush 9 and the wiping block, the surface of the underground heating cable can be cleaned, thereby improving the use effect of the detection device body 1.

[0031] When the cleaning brush 9 needs to be replaced, first turn the knob 5 to drive the two connecting ropes 10 at the bottom to gradually wrap around its outer side, thereby simultaneously pulling the front and rear limit plates 13 to move towards each other along the inner wall of the moving groove 11 and squeezing the elastic element 12, so that it is compressed in the inner wall of the moving groove 11. At this time, the insertion post 14 disengages from the slot 17, and then the cleaning brush 9 can be pulled down, driving the two mounting plates 15 at its top to disengage from the mounting groove 16, so that the operator can easily remove and replace the cleaning brush 9. After that, reset the replaced cleaning brush 9, and at the same time drive the mounting plate 15 to insert into the inner wall of the mounting groove 16. At this time, release the knob 5, and then use the elastic force of the elastic element 12 to push the limit plate 13 to reset, and drive the insertion post 14 to continue to be inserted between the slot 17 for subsequent disassembly and maintenance.

[0032] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 detection device for downhole heating cables in oil and gas wells, characterized in that, The device includes a detection device body (1) and a support frame (2). The support frame (2) has grooves (7) on both the left and right sides. A slider (8) is slidably connected to the inner wall of the groove (7). A support plate (4) is installed between the sliders (8) on the left and right sides. A cleaning brush (9) is installed at the bottom of the support plate (4).

2. The detection device for downhole heating cables in oil and gas wells according to claim 1, characterized in that, A fixing rod (3) is installed on the inner wall of the slide (7), and a spring (6) is sleeved on the outer side of the fixing rod (3).

3. The detection device for downhole heating cables in oil and gas wells according to claim 2, characterized in that, One end of the spring (6) is installed between the slider (8) and the other end is installed between the inner top wall of the groove (7), and the fixing rod (3) is inserted into the middle of the slider (8).

4. The detection device for downhole heating cables in oil and gas wells according to claim 1, characterized in that, The support plate (4) has movable grooves (11) on both the front and rear sides inside. The inner wall of the movable groove (11) is slidably connected to a limiting plate (13). A plug (14) is installed on one side of the limiting plate (13), and an elastic element (12) is installed on the other side. A knob (5) is inserted into the middle of the support plate (4). A connecting rope (10) is installed on both the front and rear sides of the lower part of the knob (5). The support plate (4) has mounting grooves (16) on both the front and rear sides at the bottom. An mounting plate (15) is inserted into the inner wall of the mounting groove (16). A slot (17) is opened in the middle of the mounting plate (15).

5. The detection device for downhole heating cables in oil and gas wells according to claim 4, characterized in that, The mounting plates (15) on both the front and rear sides are installed on the top of the cleaning brush (9), and the opposite ends of the inserts (14) on both the front and rear sides pass through the mounting groove (16) and are inserted into the inner wall of the slot (17).

6. The detection device for downhole heating cables in oil and gas wells according to claim 4, characterized in that, The elastic elements (12) on the front and rear sides are installed on the inner wall of the moving groove (11) on the side closest to each other. The connecting ropes (10) on the front and rear sides pass through the moving groove (11) at opposite ends and are installed between the ropes and the limiting plate (13).

7. The detection device for downhole heating cables in oil and gas wells according to claim 1, characterized in that, The support plate (4) is slidably connected to the inner wall of the support frame (2) and fits against the inner wall of the support frame (2).

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