Cable sheath ring current monitoring sensing device

Abstract

The utility model discloses a cable sheath circulation monitoring sensing device, which relates to the technical field of cable sheath circulation monitoring and comprises a monitoring device body, a bottom frame is fixedly mounted at the bottom of the monitoring device body, mounting holes are formed in two ends of the bottom frame, and mounting shafts are rotatably connected to the inner walls of the mounting holes through bearings. Winding and unwinding reels distributed at equal intervals are fixedly installed on the outer wall of the installation shaft, cables are wound on the outer walls of the winding and unwinding reels, cable holes for the cables to penetrate through at equal intervals are formed in the bottom of the bottom frame, and a current transformer is arranged at one end of each cable. According to the cable winding and unwinding device, a cable can be wound and unwound, the situation that the use effect is affected due to the fact that the cable is exposed outside is avoided, the problem that the cable is damaged is further avoided, the cable can be straightened, the problem that the cable is wound is avoided, the position of the adjusted cable can be positioned, and it is guaranteed that the cable is in a stable state.

Description

Technical Field

[0001] The utility model relates to the technical field of cable sheath circulating current monitoring, in particular to a cable sheath circulating current monitoring sensing device. Background Art

[0002] Under normal circumstances, the circulating current on the metal sheath of the cable is extremely small, mainly capacitive current. Once the metal sheath has multiple grounding points and forms a loop with the ground, the circulating current will increase significantly. In severe cases, it can reach more than 90% of the main current. By monitoring the circulating current of the metal sheath and its change amount in real time, the online monitoring of the multiple grounding faults of the cable metal sheath can be realized, so as to timely and accurately detect the grounding faults, fundamentally avoid the occurrence of cable accidents, and ensure the safe and reliable operation of the cable.

[0003] After retrieval, a cable sheath grounding circulating current online monitoring device with the patent publication number of CN217360046U includes an online monitoring device body and a folding telescopic support mechanism. The folding telescopic support mechanism includes a folding mechanism and a multi-stage telescopic mechanism, and the folding mechanism is screwed to the multi-stage telescopic mechanism. Combining the above patent, it is found that the prior art has the following deficiencies: In the prior art, a long cable is used for electrical connection between the device body of the cable sheath circulating current monitoring sensing device and the current transformer. During use, straps are needed to bind the cable, but most of the cable is exposed outside, which will affect the use effect and is extremely prone to damage problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a cable sheath circulating current monitoring sensing device. Its advantages are that the cable between the cable sheath circulating current monitoring sensing device and the current transformer is wound and unwound, avoiding the influence of the exposed cable on the use effect, further avoiding the problem of cable damage, and being able to straighten the cable, avoiding the problem of cable winding, and being able to position the position of the adjusted cable to ensure that the cable is in a stable state.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Cable sheath circulating current monitoring sensing device, including the monitoring device body. A bottom frame is fixedly installed at the bottom of the monitoring device body, and installation holes are opened at both ends of the bottom frame. The inner wall of the installation hole is rotationally connected to an installation shaft through a bearing. The outer wall of the installation shaft is fixedly installed with equally spaced retractable reels, and a cable is wound around the outer wall of the retractable reel. Wire holes for the cable to pass through are opened at equal intervals at the bottom of the bottom frame. One end of the cable is provided with a current transformer. A positioning component is arranged between the inner walls at both ends of the bottom frame and the outer walls at both ends of the installation shaft. An annular groove is opened at one end of the retractable reel, and equally spaced mounting plates are fixed at the bottom of the monitoring device body. An electric slip ring sleeved on the outer wall of the installation shaft and inserted into the annular groove is fixedly installed at the bottom of the mounting plate. The electric slip ring is electrically connected to the other end of the cable, and the electric slip ring is electrically connected to the monitoring device body.

[0007] Through the above technical solutions: The cable between the cable sheath circulating current monitoring sensing device and the current transformer is retracted and wound to avoid the cable being exposed outside and affecting the use effect, and further avoid the problem of cable damage.

[0008] Further, the positioning component includes positioning disks fixed at both ends of the outer wall of the installation shaft, and multi-frames sleeved on the outer walls of the positioning disks are fixedly installed on the inner walls at both ends of the bottom frame. A plurality of guiding ports are opened on the multi-frame, and a U-shaped frame is inserted into the interior between adjacent two guiding ports. A roller is rotationally connected between the two ends of the U-shaped frame through a pin shaft. A spring is fixed between the inner wall of the U-shaped frame and the outer wall of the multi-frame. Equally spaced arc-shaped card slots are opened on the outer wall of the positioning disk, and the roller is attached to the inner wall of the arc-shaped card slot.

[0009] Through the above technical solutions: The retractable reel can be positioned, so that the position of the cable after adjustment can be positioned, ensuring that the cable is in a stable state.

[0010] Further, a knob is fixed at one end of the installation shaft.

[0011] Through the above technical solutions: It is convenient to drive the installation shaft to rotate.

[0012] Further, equally spaced hooks are fixed at the bottom of the bottom frame, and the current transformer is hung on the hooks.

[0013] Through the above technical solutions: It is convenient to form a hanging function through the hooks.

[0014] Further, first positioning clamps are fixedly installed at the top and bottom on one side of the monitoring device body, and second positioning clamps are opened on one side of the first positioning clamps. Installation holes are opened at both ends of the second positioning clamps and both ends of the first positioning clamps. Screws are inserted into the interior between adjacent two installation holes, and nuts are screwed at one ends of the screws.

[0015] Through the above technical solutions, it is convenient to fixedly install the entire monitoring device body at the monitoring position.

[0016] Furthermore, one end of the monitoring device body is provided with heat dissipation openings distributed at equal intervals, and protective covers are fixed on one side of each heat dissipation opening.

[0017] Through the above technical solutions, heat dissipation of the entire device body is facilitated through the heat dissipation openings, and the heat dissipation openings are protected by the protective covers.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. For the cable sheath circulating current monitoring and sensing device, the cable between the cable sheath circulating current monitoring and sensing device and the current transformer is wound and unwound through the provided mounting shaft, knob, winding and unwinding reel, electric slip ring, cable, and current transformer, etc., avoiding the exposure of the cable outside and affecting the use effect, further avoiding the problem of cable damage, and being able to straighten the cable to avoid the problem of cable entanglement.

[0020] 2. For the cable sheath circulating current monitoring and sensing device, the provided positioning component can position the winding and unwinding reel, thereby being able to position the position of the cable after adjustment and ensuring the cable is in a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the cable sheath circulating current monitoring and sensing device proposed by the present utility model;

[0022] Figure 2 It is a rear view of the cable sheath circulating current monitoring and sensing device proposed by the present utility model;

[0023] Figure 3 It is a schematic diagram of the bottom frame structure of the cable sheath circulating current monitoring and sensing device proposed by the present utility model;

[0024] Figure 4 It is a schematic diagram of the mounting shaft and electric slip ring structure of the cable sheath circulating current monitoring and sensing device proposed by the present utility model.

[0025] Figure 5 It is a schematic diagram of the positioning component structure of the cable sheath circulating current monitoring and sensing device proposed by the present utility model.

[0026] In the figure: 1. Monitoring device body; 2. Bottom frame; 3. Current transformer; 4. Knob; 5. Protective cover; 6. First positioning clamp; 7. Second positioning clamp; 8. Hook; 9. Mounting shaft; 10. Positioning assembly; 1001. Positioning disk; 1002. U-shaped frame; 1003. Multi-sided frame; 1004. Guide port; 1005. Card roller; 1006. Spring; 11. Rewinding and unwinding reel; 12. Electric slip ring. Specific embodiments

[0027] The technical solutions of this patent will be further described in detail below in combination with specific embodiments.

[0028] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0029] Refer to Figures 1-5, a cable sheath circulating current monitoring sensing device, including a monitoring device body 1. A bottom frame 2 is fixedly installed at the bottom of the monitoring device body 1, and mounting holes are opened at both ends of the bottom frame 2. The inner wall of the mounting hole is rotatably connected to a mounting shaft 9 through a bearing. One end of the mounting shaft 9 is fixed with a knob 4, and evenly spaced retractable reels 11 are fixedly installed on the outer wall of the mounting shaft 9. A cable is wound around the outer wall of the retractable reel 11. An annular groove is opened at one end of the retractable reel 11, and evenly spaced mounting plates are fixed to the bottom of the monitoring device body 1. An electric slip ring 12 sleeved on the outer wall of the mounting shaft 9 and inserted into the annular groove is fixedly installed at the bottom of the mounting plate. The electric slip ring 12 is electrically connected to the other end of the cable, and the electric slip ring 12 is electrically connected to the monitoring device body 1. Wire holes for the cable to pass through are evenly opened at the bottom of the bottom frame 2. A current transformer 3 is arranged at one end of the cable. A positioning component 10 is arranged between the inner walls at both ends of the bottom frame 2 and the outer walls at both ends of the mounting shaft 9. The positioning component 10 includes positioning discs 1001 fixed to the outer walls at both ends of the mounting shaft 9, and multi-sided frames 1003 sleeved on the outer walls of the positioning discs 1001 are fixedly installed on the inner walls at both ends of the bottom frame 2. A plurality of guiding openings 1004 are opened on the multi-sided frames 1003. A U-shaped frame 1002 is inserted into the interior between adjacent two guiding openings 1004. A roller 1005 is rotatably connected between the two ends of the U-shaped frame 1002 through a pin shaft. A spring 1006 is fixed between the inner wall of the U-shaped frame 1002 and the outer wall of the multi-sided frame 1003. Arc-shaped clamping grooves are evenly distributed on the outer wall of the positioning disc 1001, and the roller 1005 is attached to the inner wall of the arc-shaped clamping groove. The cable between the cable sheath circulating current monitoring sensing device and the current transformer 3 is retracted and unreeled, avoiding the cable being exposed outside and affecting the use effect, further avoiding the problem of cable damage, and being able to straighten the cable, avoiding the problem of cable entanglement, and being able to position the retractable reel 11, being able to position the position of the cable after adjustment, ensuring that the cable is in a stable state.

[0030] Specifically, hooks 8 are fixedly installed at equal intervals at the bottom of the bottom frame 2, and the current transformer 3 is suspended on the hooks 8, facilitating the formation of a suspension function through the hooks 8.

[0031] Specifically, first positioning clamps 6 are fixedly installed at the top and bottom of one side of the monitoring device body 1. A second positioning clamp 7 is opened on one side of the first positioning clamp 6. Mounting holes are opened at both ends of the second positioning clamp 7 and both ends of the first positioning clamp 6. Screws are inserted into the interior between adjacent two mounting holes, and nuts are screwed onto one ends of the screws. Heat dissipation openings are evenly distributed at one end of the monitoring device body 1, and protective covers 5 are fixed to one sides of the heat dissipation openings. The entire monitoring device body 1 is fixedly installed at the monitoring position through the first positioning clamp 6 and the second positioning clamp 7.

[0032] Working principle: When in use, the user fixes and installs the entire monitoring device body 1 through the first positioning clamp 6 and the second positioning clamp 7 for monitoring and processing. By rotating the knob 4, the installation shaft 9 is driven to rotate, driving the winding and unwinding reel 11 to rotate, facilitating the winding and unwinding of the cable. The cable can be straightened to avoid the problem of cable entanglement, and the roller 1005 in the positioning component 10 is always clamped in the arc-shaped card slot on the outer wall of the positioning disk 1001, which can position the winding and unwinding reel 11 and position the position of the cable after adjustment, ensuring that the cable is in a stable state.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. Cable sheath circulating current monitoring sensing device, including the monitoring device body (1), characterized in that, A bottom frame (2) is fixedly installed at the bottom of the monitoring device body (1), and installation holes are formed at both ends of the bottom frame (2). The inner wall of the installation hole is rotatably connected to an installation shaft (9) through a bearing. An outer wall of the installation shaft (9) is fixedly installed with winding and unwinding reels (11) distributed at equal intervals, and a cable is wound around an outer wall of the winding and unwinding reel (11). Wire holes for the cable to pass through are formed at equal intervals at the bottom of the bottom frame (2), and a current transformer (3) is arranged at one end of the cable. A positioning assembly (10) is arranged between inner walls at both ends of the bottom frame (2) and outer walls at both ends of the installation shaft (9).

2. The cable sheath circulating current monitoring sensing device according to claim 1, characterized in that An annular groove is formed at one end of the winding and unwinding reel (11), and mounting plates are fixedly arranged at the bottom of the monitoring device body (1) at equal intervals. A bottom of the mounting plate is fixedly installed with an electric slip ring (12) sleeved on an outer wall of the installation shaft (9) and inserted into the annular groove. The electric slip ring (12) is electrically connected to the other end of the cable, and the electric slip ring (12) is electrically connected to the monitoring device body (1).

3. The cable sheath circulating current monitoring and sensing device according to claim 2, wherein The positioning assembly (10) includes positioning discs (1001) fixed to outer walls at both ends of the installation shaft (9), and multi - side frames (1003) sleeved on outer walls of the positioning discs (1001) are fixedly arranged on inner walls at both ends of the bottom frame (2). A plurality of guiding openings (1004) are formed in the multi - side frame (1003), and a U - shaped frame (1002) is inserted into the interior between adjacent two guiding openings (1004). A roller (1005) is rotatably connected between two ends of the U - shaped frame (1002) through a pin shaft. A spring (1006) is fixed between an inner wall of the U - shaped frame (1002) and an outer wall of the multi - side frame (1003).

4. The cable sheath circulating current monitoring and sensing device according to claim 3, wherein Arc - shaped card slots are formed at equal intervals on an outer wall of the positioning disc (1001), and the roller (1005) is attached to an inner wall of the arc - shaped card slot.

5. The cable sheath circulating current monitoring and sensing device according to claim 4, characterized in that A knob (4) is fixed to one end of the installation shaft (9).

6. The cable sheath circulating current monitoring sensing device according to claim 1, wherein Hooks (8) are fixedly arranged at the bottom of the bottom frame (2) at equal intervals, and the current transformer (3) is hung on the hook (8).

7. The cable sheath circulating current monitoring and sensing device according to claim 1, characterized in that First positioning clamps (6) are fixedly installed at both the top and bottom of one side of the monitoring device body (1), and a second positioning clamp (7) is formed on one side of the first positioning clamp (6). Installation holes are formed at both ends of the second positioning clamp (7) and both ends of the first positioning clamp (6), and a screw is inserted into the interior between adjacent two installation holes. A nut is screwed onto one end of the screw.

8. The cable sheath circulating current monitoring sensing device according to claim 1, characterized in that Heat dissipation openings are formed at equal intervals at one end of the monitoring device body (1), and protective covers (5) are fixedly arranged on one side of each heat dissipation opening.

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