Distribution network fault early warning and positioning device

Abstract

The utility model relates to the technical field of distribution network fault early warning and positioning, in particular to a distribution network fault early warning and positioning device which comprises a lower shell, a threaded column is fixedly connected to the inner wall of the lower shell, an upper shell is connected to the upper portion of the lower shell through a hinge, and a counterbore is formed in the position, corresponding to the threaded column, of the upper shell. A flow guide hole is formed in the bottom of the counterbore, and a water retaining strip is integrally formed at the bottom of the upper shell. The lower clamping plates are fixedly connected to the inner wall of the lower shell, and the upper clamping plates are inserted between the lower clamping plates. The water retaining strip is integrally formed at the bottom of the upper shell, a gap formed after the upper shell and the lower shell are in butt joint can be covered and protected, rainwater infiltration is avoided, the use waterproofness is improved, meanwhile, the water guide hole in the bottom end of the counter bore of the upper shell can further guide a water source in the counter bore, water source residues are avoided, and the service life of the water storage tank is prolonged. And the overall waterproof performance of the device is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution network fault early warning and positioning, in particular to a distribution network fault early warning and positioning device. Background Art

[0002] The distribution network traveling wave fault warning and locating device is a device used to monitor and locate faults in power systems. It mainly achieves fault warning and location by detecting and analyzing traveling wave signals in the power grid. Traveling wave signals are instantaneous high-frequency signals generated by power grid faults. They propagate quickly and can quickly reflect fault information. They are widely used in scenarios such as cable fault detection and overhead line fault detection.

[0003] When the existing distribution network traveling wave fault warning and positioning device is installed and used, it is mainly connected to the cable through an internal ring clamp. However, due to the consistent inner diameter of the ring clamp, it can only achieve fixed connection of cables of a single size. At the same time, the device adopts a docking connection between the upper and lower shells, and the connection is prone to rainwater infiltration, which causes moisture inside the device, thereby affecting its safety and stability. Utility Model Content

[0004] The purpose of the present utility model is to provide a distribution network fault warning and positioning device to solve the problem that the docking connection between the upper and lower shells proposed in the above-mentioned background technology is prone to rainwater infiltration at the connection point, causing moisture inside the device, thereby affecting the safety and stability of its use.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a distribution network fault warning and positioning device, comprising:

[0006] A lower shell, the inner wall of which is fixedly connected with a threaded column, the upper part of which is connected to the upper shell by a hinge, a countersunk hole is provided in the upper shell corresponding to the threaded column, and a guide hole is provided at the bottom of the countersunk hole, and a water retaining strip is integrally formed at the bottom of the upper shell;

[0007] The lower splint and the upper splint, the lower splint is fixedly connected to the inner wall of the lower shell, and the upper splint is inserted between the lower splints, both ends of the lower splint are integrally formed with positioning supports, and both ends of the upper splint are provided with positioning ears corresponding to the positioning supports, and bolts are passed through the inside of the positioning ears to connect with the positioning supports.

[0008] Preferably, the countersunk hole is stepped, and the minimum inner diameter of the countersunk hole is larger than the diameter of the central screw hole of the threaded column. A screw passes through the interior of the countersunk hole and is connected to the threaded column.

[0009] Preferably, the guide hole is inclined, a sealing ring is provided inside the countersunk hole, and the height of the sealing ring is smaller than the height of the guide hole.

[0010] Preferably, the lower surface of the water retaining strip is below the upper surface of the lower shell, and the distance between the inner wall of the water retaining strip and the outer wall of the lower shell is between one millimeter and three millimeters.

[0011] Preferably, two groups of the lower splints and upper splints are provided, and the two groups of lower splints and upper splints are symmetrically distributed on both sides of the lower shell, and a guide groove is provided at the midline of the lower shell corresponding to the lower splint.

[0012] Preferably, the positioning support and the sealing card are an integrated structure, and the bottom of the positioning support and the sealing card are fixedly connected to the inner wall of the lower shell, the positioning ears are evenly provided with positioning holes, and the positioning support and the sealing card are provided with threaded holes corresponding to the positioning holes.

[0013] Preferably, the inner wall of one end of the upper splint close to the sealing cardboard is a semicircular ring structure, and a sealing rubber ring is fixedly connected to the semicircular ring structure and the inner wall of the sealing cardboard respectively, and the two sealing rubber rings are connected to form a circular ring structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention can cover and protect the gap after the upper and lower shells are connected through the setting of the integrally formed water retaining strip at the bottom of the upper shell, thereby avoiding the infiltration of rainwater and improving its waterproof performance. At the same time, the opening of the water guide hole at the bottom end of the countersunk hole of the upper shell can further divert the water source inside the countersunk hole to avoid water residue and further improve the overall waterproof performance of the device. At the same time, the docking setting of the upper and lower splints distributed in a V-shaped structure can improve the adaptability of the installation of the device, and can effectively adapt to cables of different diameters for clamping and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model in the installation state;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the countersunk hole axis of the present invention;

[0017] Figure 3 For the utility model Figure 2 Schematic diagram of the enlarged structure of A in the middle;

[0018] Figure 4 This is a schematic diagram of the internal structure of the lower shell of the present utility model;

[0019] Figure 5 This is a schematic diagram of the explosion structure of the upper and lower splints of the utility model;

[0020] Figure 6 This is a structural schematic diagram of the upper and lower splints of the present invention in a clamping state.

[0021] In the figure: 1. Lower shell; 11. Threaded column; 2. Upper shell; 21. Countersunk hole; 22. Diversion hole; 23. Water retaining strip; 3. Lower splint; 31. Positioning support; 32. Sealing clamp; 4. Upper splint; 41. Positioning ear; 5. Sealing rubber ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6 The present invention provides an embodiment of a distribution network fault warning and positioning device, comprising:

[0024] The lower shell 1 has a threaded column 11 fixedly connected to the inner wall of the lower shell 1. The upper shell 2 is connected to the upper shell 2 by a hinge. The upper shell 2 has a countersunk hole 21 corresponding to the threaded column 11, and a guide hole 22 is provided at the bottom of the countersunk hole 21. The bottom of the upper shell 2 is integrally formed with a water retaining strip 23. The water retaining strip 23 can cover and protect the cracks after the lower shell 1 and the upper shell 2 are connected, thereby effectively preventing rainwater from seeping into the cracks, causing the humidity inside the lower shell 1 and the upper shell 2 to increase, thereby improving the waterproof performance of the device.

[0025] The lower splint 3 and the upper splint 4, the lower splint 3 is fixedly connected to the inner wall of the lower shell 1, and the upper splint 4 is inserted between the lower splints 3, both ends of the lower splint 3 are integrally formed with a positioning support 31, and both ends of the upper splint 4 are provided with positioning ears 41 corresponding to the positioning supports 31, and the positioning ears 41 are penetrated by bolts and connected to the positioning supports 31. The lower splint 3 and the upper splint 4 are both V-shaped structures, and the staggered insertion of the two makes it possible to adapt to cables of different diameters for locking and positioning, thereby improving the adaptability of the installation of the device.

[0026] Furthermore, the countersunk hole 21 is stepped, and the minimum inner diameter of the countersunk hole 21 is larger than the diameter of the central screw hole of the threaded column 11. A screw passes through the inside of the countersunk hole 21 and is connected to the threaded column 11. The screw passes through the countersunk hole 21 and is locked with the threaded column 11 to complete the fastening connection between the lower shell 1 and the upper shell 2, thereby preventing the lower shell 1 and the upper shell 2 from opening and loosening.

[0027] Furthermore, the guide hole 22 is inclined, and a sealing ring is provided inside the countersunk hole 21, and the height of the sealing ring is smaller than the height of the guide hole 22. Through the setting of the guide hole 22, a good waterproof performance is further achieved, ensuring the discharge of water from the countersunk hole 21, preventing residual water from seeping into the interior of the lower shell 1, and reducing the probability of screw rust.

[0028] Furthermore, the lower surface of the water retaining bar 23 is below the upper surface of the lower shell 1, and the distance between the inner wall of the water retaining bar 23 and the outer wall of the lower shell 1 is between one millimeter and three millimeters, further ensuring the stability of the hinge opening between the lower shell 1 and the upper shell 2, and avoiding the water retaining bar 23 from hindering its opening.

[0029] Furthermore, two groups of lower splints 3 and upper splints 4 are provided, and the two groups of lower splints 3 and upper splints 4 are symmetrically distributed on both sides of the lower shell 1. A guide groove is opened at the center line of the lower shell 1 corresponding to the lower splint 3. The opening of the guide groove can divert rainwater at both ends, and further can divert water sources that penetrate into both ends of the lower shell 1 and the upper shell 2.

[0030] Furthermore, the positioning support 31 and the sealing card plate 32 are an integrated structure, and the bottom of the positioning support 31 and the sealing card plate 32 are fixedly connected to the inner wall of the lower shell 1, and positioning holes are evenly opened on the positioning ears 41, and threaded holes are opened on the positioning support 31 and the sealing card plate 32 corresponding to the positioning holes. The positioning ears 41 and the positioning support 31 are fastened by passing the screws, so that the lower clamping plate 3 and the upper clamping plate 4 are stably wrapped on the outside of the cable, completing the installation and positioning of the device.

[0031] Furthermore, the inner wall of one end of the upper splint 4 close to the sealing card plate 32 is a semi-circular ring structure, and a sealing rubber ring 5 is fixedly connected to the semi-circular ring structure and the inner wall of the sealing card plate 32 respectively. The two sealing rubber rings 5 ​​are connected to form a circular ring structure. The sealing rubber ring 5 wraps the outside of the cable to improve the stability and sealing of the cable wrapping.

[0032] Working principle: The lower shell 1 and the upper shell 2 used in this application are products that can be purchased directly on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be repeated here. When the utility model is in use, the cable is first clamped between the lower clamping plate 3 and the upper clamping plate 4, and then the positioning ear 41 is penetrated by screws and fastened to the positioning support 31, thereby completing the stable installation of the lower shell 1. Then, after the upper shell 2 is closed, the screws inside the countersunk hole 21 are penetrated and connected to the threaded column 11 to achieve the installation and positioning of the device. The device works based on the traveling wave principle through the setting of its internal electrical components. By real-time monitoring of transient traveling wave signals in the distribution network, rapid early warning and precise positioning of faults can be achieved. When a fault occurs in the distribution network, specific transient traveling wave signals will be generated. These signals will carry fault characteristic information when propagating in the power grid. The device collects these signals through high-precision sensors and uses advanced signal processing technology and algorithms to analyze and calculate them, so as to accurately determine the nature and location of the fault.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. Distribution network fault warning and positioning device, characterized in that: include: A lower shell (1), wherein the inner wall of the lower shell (1) is fixedly connected to a threaded column (11), and the upper part of the lower shell (1) is connected to an upper shell (2) via a hinge, and the upper shell (2) is provided with a countersunk hole (21) corresponding to the threaded column (11), and a guide hole (22) is provided at the bottom of the countersunk hole (21), and a water retaining strip (23) is integrally formed at the bottom of the upper shell (2); A lower clamping plate (3) and an upper clamping plate (4), wherein the lower clamping plate (3) is fixedly connected to the inner wall of the lower shell (1), and the upper clamping plate (4) is inserted between the lower clamping plates (3), both ends of the lower clamping plate (3) are integrally formed with positioning supports (31), and both ends of the upper clamping plate (4) are provided with positioning ears (41) corresponding to the positioning supports (31), and bolts are passed through the interior of the positioning ears (41) to connect with the positioning supports (31).

2. The distribution network fault early warning and positioning device according to claim 1, characterized in that: The countersunk hole (21) is in a step shape, and the minimum inner diameter of the countersunk hole (21) is larger than the diameter of the central screw hole of the threaded column (11). A screw passes through the inside of the countersunk hole (21) and is connected to the threaded column (11).

3. The distribution network fault early warning and positioning device according to claim 2, characterized in that: The guide hole (22) is inclined, and a sealing ring is provided inside the countersunk hole (21), and the height of the sealing ring is smaller than the height of the guide hole (22).

4. The distribution network fault early warning and positioning device according to claim 1, characterized in that: The lower surface of the water retaining strip (23) is located below the upper surface of the lower shell (1), and the distance between the inner wall of the water retaining strip (23) and the outer wall of the lower shell (1) is between one millimeter and three millimeters.

5. The distribution network fault early warning and positioning device according to claim 1, characterized in that: The lower clamping plate (3) and the upper clamping plate (4) are both provided in two groups, and the two groups of lower clamping plates (3) and upper clamping plates (4) are symmetrically distributed on both sides of the lower shell (1), and the lower shell (1) is provided with a guide groove at the center line corresponding to the lower clamping plate (3).

6. The distribution network fault early warning and positioning device according to claim 5, characterized in that: The positioning support (31) and the sealing card plate (32) are an integrated structure, and the bottoms of the positioning support (31) and the sealing card plate (32) are fixedly connected to the inner wall of the lower shell (1), the positioning ears (41) are evenly provided with positioning holes, and the positioning support (31) and the sealing card plate (32) are provided with threaded holes corresponding to the positioning holes.

7. The distribution network fault early warning and positioning device according to claim 5, characterized in that: The inner wall of one end of the upper clamping plate (4) close to the sealing card plate (32) is in a semi-circular ring structure, and a sealing rubber ring (5) is fixedly connected to the semi-circular ring structure and the inner wall of the sealing card plate (32), and the two sealing rubber rings (5) are connected to form a circular ring structure.

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