Centralized monitoring device based on high-voltage grounding fault

Abstract

The utility model relates to the technical field of centralized fault monitoring devices, in particular to a centralized fault monitoring device based on high-voltage grounding, which comprises a low-current line selection device and an external plate, one side of the low-current line selection device is fixedly connected with the external plate, the upper end of the external plate is provided with a dovetail groove, and the inner side of the dovetail groove is slidably connected with an adjusting assembly. An adjusting assembly is arranged on the base, a middle fixing assembly is fixedly connected to one side of the adjusting assembly, an edge fixing assembly is fixedly connected to one side of the middle fixing assembly, a connecting wire is arranged on the inner side of the edge fixing assembly, and the adjusting assembly comprises a dovetail sliding block. The contact area and the friction force of the connecting wire sheath are increased, the deformation of the connecting wire sheath is reduced, the hardness of the connecting wire sheath is ensured, the damage of the connecting wire sheath under the factor of external force is prevented, and the normal transmission of a circuit is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of centralized fault monitoring devices, in particular to a centralized fault monitoring device based on high-voltage grounding. Background Art

[0002] The paper mill is a large-scale light industrial enterprise with large investment and numerous electrical equipment. When a ground fault occurs in one phase of the three-phase power supply circuit of high-voltage equipment such as high-voltage motors and transformers, the integrated protector of the corresponding high-voltage ground fault centralized monitoring device detects the abnormal situation and sends a fault signal. The high-voltage electrician on duty then goes to the high-voltage room to check one by one which high-voltage equipment has the ground fault signal, and then handles the faulty equipment.

[0003] If the connection between the signal transmitter and the monitoring device is not fixed, the signal transmitter may fall off the monitoring device under external force, affecting the monitoring effect. To solve the above problem, the existing device squeezes the line through a fixing mechanism to prevent the line from falling off. However, the fixing mechanism contacts the line by squeezing and fixing. Long-term use will cause the line skin to be thinner. After being hit by external force, the skin is easily torn and damaged, affecting circuit transmission. Therefore, in view of the above problem, a centralized monitoring device based on high-voltage grounding fault is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a centralized monitoring device based on high-voltage grounding faults to solve the problem that the existing devices squeeze the line through a fixing mechanism to prevent the line from falling off, but the way the fixing mechanism contacts the line is by squeezing and fixing, and long-term use will cause the line skin to be thin, and after receiving external force collision, the skin is easily pulled and damaged, affecting the circuit transmission problem.

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

[0006] A centralized monitoring device based on high-voltage grounding faults comprises a small current line selection device and an external plate, wherein one side of the small current line selection device is fixedly connected to the external plate, the upper end of the external plate is provided with a dovetail groove, an adjusting component is slidably connected to the inner side of the dovetail groove, one side of the adjusting component is fixedly connected to a middle solid component, one side of the middle solid component is fixedly connected to a side solid component, a connecting wire is arranged on the inner side of the side solid component, the adjusting component comprises a dovetail slider, the upper end of the dovetail slider is fixedly connected to a cylinder, one side of the dovetail slider is fixedly connected to a buffer spring, a threaded rod is spirally connected to the inner side of the cylinder, a hand handle is fixedly connected to one side of the threaded rod, a rubber piston is rotatably connected to one side of the hand handle, an air groove is provided on the inner side of the cylinder, the side solid component comprises a side block, a half-slot is provided on the inner side of the side block, an air duct is provided on the inner side of the side block, a straight groove is provided on the inner side of the side block, and a second air bag is fixedly connected to one side of the straight groove.

[0007] As a further optimization of the present invention, there are several dovetail grooves, the dovetail grooves are shaped as being opened in a dovetail body, and the dovetail grooves correspond one to one with the adjustment components.

[0008] As a further optimization of the present invention, the dovetail slider is newly installed as a dovetail body, the buffer springs are in several groups, each group has two buffer springs, and the buffer springs are fixedly connected to the front and rear ends of the dovetail groove.

[0009] As further optimized content of the present invention, the shape of the cylinder is a hollow cylinder, the shape of the air groove is an opening of the cylinder, the shape of the rubber piston is a cylinder, the outer side of the rubber piston fits with the inner side of the air groove, a threaded plate is fixed on the inner side of the rear end of the cylinder, the hand handle is installed on the rear end of the cylinder, a straight groove is opened on the upper part of the cylinder, and the connecting wires on the upper part of the cylinder are in a bent state.

[0010] As further optimized content of the present utility model, the middle solid component includes an externally threaded through-hole, a threaded external groove is provided on the inner side of the externally threaded through-hole, a first airbag is fixedly connected to one side of the threaded external groove, the threaded external groove is spirally opened, there are several first airbags, the shape of the first airbag is the same as that of the second airbag, the inner side of the externally threaded through-hole is hollow, the inner side of the externally threaded through-hole is connected with the air groove, an air passage is provided on the inner side of the externally threaded through-hole, and the air passage of the externally threaded through-hole is connected with the inside of the first airbag.

[0011] As a further optimization of the present invention, the edge block is in the shape of a cylinder, the semi-open groove is opened through the rear end of the edge block, the semi-open groove is connected to the inner side of the external threaded through hole, the edge block is fixedly connected to the external threaded through hole, and the diameter of the edge block is the same as the diameter of the external threaded through hole.

[0012] As further optimization content of the present utility model, the semi-open groove is connected to the inner side of the air duct, the inner side of the second airbag is hollow, the inner side of the second airbag is connected to the air duct, the number of the second airbags in each group is two, each group of the second airbags corresponds one to one, and the straight groove is connected to the threaded external groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, by providing a small current line selection device, an external plate, a dovetail groove, an adjustment component, a middle solid component and a side solid component, the device winds the connecting wires, and fixes the connecting wires by deforming a plurality of air bags, thereby increasing the contact area and friction force on the outer skin of the connecting wires, reducing the deformation of the outer skin of the connecting wires, ensuring the hardness of the outer skin of the connecting wires, preventing the outer skin of the connecting wires from being damaged under external forces, and ensuring the normal transmission of the circuit. At the same time, the device facilitates centralized viewing of ground fault information, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the external plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connecting wires of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the edge fixing component of the utility model.

[0019] In the figure: 1. small current line selection device; 2. external plate; 3. dovetail groove; 4. adjustment component; 41. dovetail slider; 42. cylinder; 43. buffer spring; 44. threaded rod; 45. hand handle; 46. air groove; 47. rubber piston; 5. middle solid component; 51. external threaded through; 52. threaded external groove; 53. first air bag; 6. side solid component; 61. side block; 62. half slot; 63. air duct; 64. second air bag; 65. straight groove; 7. connecting wires. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A centralized monitoring device based on high-voltage grounding faults comprises a small current line selection device 1 and an external plate 2, wherein one side of the small current line selection device 1 is fixedly connected to the external plate 2, a dovetail groove 3 is provided at the upper end of the external plate 2, an adjustment component 4 is slidably connected to the inner side of the dovetail groove 3, a middle solid component 5 is fixedly connected to one side of the adjustment component 4, a side solid component 6 is fixedly connected to one side of the middle solid component 5, a connecting wire 7 is arranged inside the side solid component 6, the adjustment component 4 comprises a dovetail slider 41, and a cylindrical 42, a buffer spring 43 is fixedly connected to one side of the dovetail slider 41, a threaded rod 44 is spirally connected to the inner side of the cylinder 42, a hand handle 45 is fixedly connected to one side of the threaded rod 44, a rubber piston 47 is rotatably connected to one side of the hand handle 45, an air groove 46 is provided on the inner side of the cylinder 42, and the edge fixing component 6 includes an edge block 61, a half-slot 62 is provided on the inner side of the edge block 61, an air duct 63 is provided on the inner side of the edge block 61, a straight groove 65 is provided on the inner side of the edge block 61, and a second air bag 64 is fixedly connected to one side of the straight groove 65.

[0024] As a further implementation of the present solution, there are several dovetail grooves 3 , each of which is shaped like a dovetail body, and each of the dovetail grooves 3 corresponds to the adjustment assembly 4 one by one.

[0025] The dovetail slider 41 is newly installed as a dovetail body, and the number of buffer springs 43 is several groups, and the number of buffer springs 43 in each group is two. The buffer springs 43 are fixedly connected to the front end and the rear end of the dovetail groove 3.

[0026] The cylinder 42 is in the shape of a hollow cylinder, the air groove 46 is in the shape of a cylinder, the rubber piston 47 is in the shape of a cylinder, the outer side of the rubber piston 47 fits with the inner side of the air groove 46, a threaded plate is fixed on the inner side of the rear end of the cylinder 42, the hand handle 45 is installed on the rear end of the cylinder 42, a straight groove 65 is provided on the upper part of the cylinder 42, and the connecting wire 7 on the upper part of the cylinder 42 is in a bent state.

[0027] The middle solid component 5 includes an externally threaded through-hole 51, a threaded external groove 52 is provided on the inner side of the externally threaded through-hole 51, a first airbag 53 is fixedly connected to one side of the threaded external groove 52, the threaded external groove 52 is spirally provided, there are several first airbags 53, the shape of the first airbag 53 is the same as that of the second airbag 64, the inner side of the externally threaded through-hole 51 is hollow, the inner side of the externally threaded through-hole 51 is connected to the air groove 46, an air passage 63 is provided on the inner side of the externally threaded through-hole 51, and the air passage 63 of the externally threaded through-hole 51 is connected to the inside of the first airbag 53.

[0028] The edge block 61 is cylindrical in shape, and a half slot 62 is provided through the rear end of the edge block 61 . The half slot 62 is connected to the inner side of the external threaded through hole 51 . The edge block 61 is fixedly connected to the external threaded through hole 51 , and the diameter of the edge block 61 is the same as the diameter of the external threaded through hole 51 .

[0029] The semi-open groove 62 is connected to the inner side of the air passage 63 . The inner side of the second air bag 64 is hollow and connected to the air passage 63 . There are two second air bags 64 in each group, and each group of second air bags 64 corresponds to each other. The straight groove 65 is connected to the threaded external groove 52 .

[0030] Working process: when the device is in use and the connecting wire 7 needs to be installed, one end of the connecting wire 7 is electrically connected to the small current line selection device 1, and then the connecting wire 7 is wound around the groove, the threaded external groove 52 and the straight groove 65 on the cylinder 42, and the hand handle 45 is turned. The hand handle 45 drives the threaded rod 44 to rotate, and the outer side of the threaded rod 44 is spirally connected to the inner side of the cylinder 42, and the threaded rod 44 moves toward the inside of the air groove 46. The threaded rod 44 is rotatably connected to the rubber piston 47, and when the threaded rod 44 moves, the rubber piston 47 is pushed to move toward the inside of the air groove 46, and the outer side of the rubber piston 47 fits with the inner side of the cylinder 42, which has the effect of sealing the air groove 46, and the gas inside the air groove 46 enters the inner side of the external threaded passage 51 to and the interior of the half-open groove 62, and enter the second airbag 64 and the first airbag 53 from the external threaded through hole 51 and the air passage 63 opened on the inner side of the external threaded through hole 51. At this time, the gas inside the second airbag 64 and the first airbag 53 expands, and the second airbag 64 and the threaded external groove 52 are deformed at the same time. Each group of the second airbags 64 corresponds one to one, and each group of the first airbags 53 corresponds one to one. At this time, the first airbag 53 and the second airbag 64 fix the connecting wire 7 at the same time. The second airbag 64 and the first airbag 53 can not only protect the outer skin of the connecting wire 7, but also increase the friction between the connecting wire 7. Multiple first airbags 53 squeeze the connecting wire 7 to increase the contact area of ​​the connecting wire 7, reduce local pressure, and protect The toughness of the outer skin of the connecting wire 7 is protected. When subjected to external force, the connecting wire 7 pulls the side fixing component 6, the middle fixing component 5 and the adjusting component 4 to move at the same time. At this time, the dovetail slider 41 slides on the inside of the dovetail groove 3, and the dovetail slider 41 squeezes the buffer spring 43 to achieve a buffering effect. At this time, the connecting wire 7 on the cylinder 42 is bent to a certain extent. When the connecting wire 7 is installed on the upper part of the cylinder 42, part of the line is reserved. The small current line selection device 1 contains: a power supply board, a voltage board, a first current input board, a second power supply input board, a jump back board 1 and a jump back board 2 and other main components. The small current line selection device 1 has high accuracy. The small current line selection device 1 can also eliminate the erroneous judgment caused by inconsistent zero-sequence CT characteristics, and can eliminate the grounding process. The influence of system fluctuations on the phase line, and because the sampling accuracy of the fifth harmonic is greatly improved, the accuracy of arc suppression coil grounding system line selection is improved. At the same time, it has alarm and remote transmission functions, which is suitable for remote monitoring. It can centrally monitor up to 32 control cabinets. The touch screen displays in Chinese and the operation is convenient and simple. The small current line selection device 1 is a device that allows electricians to centrally view grounding fault information, so that the on-duty electrician can immediately determine the control cabinet where the fault is located, without having to check one by one which high-voltage equipment has a grounding fault signal. This can quickly troubleshoot and handle faults, shorten the time to find faults, save power supply time, and reduce the negative impact caused by reporting grounding faults, thereby greatly improving work efficiency.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centralized monitoring device for high-voltage ground faults, comprising a low-current line selection device (1) and an external board (2), characterized in that: One side of the small current line selection device (1) is fixedly connected to an external plate (2), the upper end of the external plate (2) is provided with a dovetail groove (3), the inner side of the dovetail groove (3) is slidably connected to an adjustment component (4), one side of the adjustment component (4) is fixedly connected to a middle solid component (5), one side of the middle solid component (5) is fixedly connected to a side solid component (6), the inner side of the side solid component (6) is provided with a connecting wire (7), the adjustment component (4) comprises a dovetail slider (41), the upper end of the dovetail slider (41) is fixedly connected to a cylinder (42), and one side of the dovetail slider (41) is fixedly connected to a buffer A spring (43), a threaded rod (44) is spirally connected to the inner side of the cylinder (42), a hand handle (45) is fixedly connected to one side of the threaded rod (44), a rubber piston (47) is rotatably connected to one side of the hand handle (45), an air groove (46) is provided on the inner side of the cylinder (42), the edge fixing component (6) comprises an edge block (61), a semi-open groove (62) is provided on the inner side of the edge block (61), an air passage (63) is provided on the inner side of the edge block (61), a straight groove (65) is provided on the inner side of the edge block (61), and a second air bag (64) is fixedly connected to one side of the straight groove (65).

2. A centralized monitoring device based on high-voltage grounding fault according to claim 1, characterized in that: The dovetail grooves (3) are of a plurality of numbers, and the dovetail grooves (3) are shaped as being opened on a dovetail body, and the dovetail grooves (3) correspond one to one with the adjustment components (4).

3. A centralized monitoring device based on high-voltage grounding fault according to claim 1, characterized in that: The dovetail slider (41) is newly installed as a dovetail body. The buffer springs (43) are provided in several groups, each group of the buffer springs (43) has two buffer springs. The buffer springs (43) are fixedly connected to the front and rear ends of the dovetail groove (3).

4. The device for centralized monitoring of high-voltage ground fault according to claim 1 is characterized in that: The cylinder (42) is in the shape of a hollow cylinder, the air groove (46) is in the shape of a cylinder, the rubber piston (47) is in the shape of a cylinder, the outer side of the rubber piston (47) is in contact with the inner side of the air groove (46), a threaded plate is fixed on the inner side of the rear end of the cylinder (42), the hand handle (45) is installed on the rear end of the cylinder (42), a straight groove (65) is provided on the upper part of the cylinder (42), and the connecting wire (7) on the upper part of the cylinder (42) is in a bent state.

5. The device for centralized monitoring of high-voltage ground fault according to claim 1 is characterized in that: The middle solid component (5) comprises an external threaded through hole (51), an external threaded groove (52) is provided on the inner side of the external threaded through hole (51), a first air bag (53) is fixedly connected to one side of the external threaded groove (52), the external threaded groove (52) is spirally provided, a plurality of first air bags (53) are provided, the shape of the first air bags (53) is the same as the shape of the second air bags (64), the inner side of the external threaded through hole (51) is hollow, the inner side of the external threaded through hole (51) is connected to the air groove (46), an air passage (63) is provided on the inner side of the external threaded through hole (51), and the air passage (63) of the external threaded through hole (51) is connected to the inside of the first air bag (53).

6. The device for centralized monitoring of high-voltage ground fault according to claim 1 is characterized in that: The side block (61) is cylindrical in shape, the semi-open groove (62) is penetrated and opened at the rear end of the side block (61), the semi-open groove (62) is communicated with the inner side of the external threaded through hole (51), the side block (61) is fixedly connected with the external threaded through hole (51), and the diameter of the side block (61) is the same as the diameter of the external threaded through hole (51).

7. The device for centralized monitoring of high-voltage ground fault according to claim 1 is characterized in that: The semi-open groove (62) is connected to the inner side of the air passage (63); the inner side of the second air bag (64) is hollow and connected to the air passage (63); the second air bags (64) are arranged in a group of two, and each group of the second air bags (64) corresponds to each other one by one; and the straight groove (65) is connected to the threaded external groove (52).

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