Magnetic type auxiliary checking device

Abstract

The utility model discloses a magnetic formula supplementary check device, including the multifunctional electric meter or microcomputer protection device of installation on the switch secondary storehouse cabinet door back, supplementary check device ontology, the supplementary check device ontology is by square frame, adjusting mechanism, magnetic attraction mechanism and electrically conductive thimble, is installed magnetic attraction mechanism on square frame, is installed adjusting mechanism on square frame, is installed electrically conductive thimble through telescopic mechanism on adjusting mechanism, the needle of electrically conductive thimble is towards the side of wiring terminal, the relative position of electrically conductive thimble is adjusted through adjusting mechanism, and the needle of electrically conductive thimble is inserted into the wiring terminal of the back of multifunctional electric meter or microcomputer protection device, is provided with test line jack in the tail of electrically conductive thimble, and test line jack is connected with check device through external test line. The utility model has the advantages of simple structure, convenient installation and use, greatly improve work efficiency etc.

Description

Technical Field

[0001] This utility model belongs to the field of relay protection and automatic safety devices, specifically relating to a magnetic auxiliary verification device. Background Technology

[0002] The medium-voltage switchgear room of a power plant contains a large number of meters, which are located on the doors of the secondary switchgear cabinets. According to relevant metrological standards and regulations, regular meter calibration is required to ensure the accuracy of the metering equipment. Traditional meter calibration methods involve removing and calibrating the meters, which presents three problems: 1) The repetitive disassembly, reassembly, and wiring work is extremely time-consuming; 2) In terms of maintenance personnel, at least two maintenance personnel are required to disassemble and reassemble the meters, and one person is responsible for meter wiring and calibration, thus requiring multiple personnel to coordinate, increasing maintenance costs; 3) During the meter disassembly and reassembly process, there is a possibility of touching live circuits in the secondary switchgear terminals, posing a safety hazard to equipment and personnel.

[0003] To address this issue, a magnetic auxiliary verification device was designed to overcome the aforementioned problems. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a magnetic auxiliary calibration device with a simple and reasonable structure, convenient installation and use, safety and high efficiency, which greatly improves work efficiency. The designed auxiliary calibration device serves as an intermediate device for calibrating medium-voltage switchgear meters in power plants. Before calibrating the meters, the device is attached to the back panel of the switchgear secondary compartment door. The entire calibration process does not require disconnecting the meter wiring, which is very convenient and fast, improves the safety of maintenance operations, and reduces the maintenance labor costs for energy-saving enterprises.

[0005] This utility model is achieved through the following technical solution: a magnetic auxiliary verification device, comprising a multi-functional power meter and a microcomputer protection device installed on the back of the secondary switch cabinet door, and at least one auxiliary verification device body sleeved on the outside of the multi-functional power meter and the microcomputer protection device. The auxiliary verification device body consists of a square frame composed of multiple horizontally and vertically arranged connecting rods, an adjustment mechanism, a magnetic attraction mechanism, and conductive pins. A magnetic attraction mechanism is installed on the side of the square frame near the back of the secondary switch cabinet door, thereby achieving magnetic attraction and fixation between the square frame and the back of the secondary switch cabinet door. The square frame is located away from the back of the secondary switch cabinet door. An adjustment mechanism is installed on one side of the device. Multiple conductive pins are mounted on the adjustment mechanism via a telescopic mechanism. The tips of the conductive pins face the wiring terminals on the back of the multi-functional power meter or microcomputer protection device inside the square frame. The relative positions of the conductive pins are adjusted by the adjustment mechanism so that the conductive pins are aligned with the wiring terminals of the multi-functional power meter or microcomputer protection device. Then, the telescopic mechanism is adjusted to ensure that the tips of the conductive pins are inserted into the wiring terminals on the back of the multi-functional power meter or microcomputer protection device. A test lead socket is provided at the tail of each conductive pin on the side away from the wiring terminal. The test lead socket is connected to the calibration device through an external test lead.

[0006] Preferably, the adjustment mechanism consists of two vertical first guide rails, at least two horizontal second guide rails, a first slider, and a second slider. The two vertical first guide rails are bolted to the back of the square frame away from the secondary storage door, and the length of the first guide rails is the same as the length of the vertical connecting rods of the square frame. Two horizontal second guide rails are arranged vertically between the two opposing vertical connecting rods, and the length of each second guide rail is the same as the distance between the two vertical first guide rails. A first slider is fixed at each of the left and right ends of each second guide rail, and the first sliders are embedded in the first guide rails. The first guide rail moves up and down, thereby driving the second guide rail to move up and down between the two first guide rails. Multiple second sliders are embedded in each second guide rail. Each second slider is equipped with a conductive pin through a telescopic mechanism. The second slider can move left and right within the second guide rail. The first slider is used to adjust the vertical position of the conductive pin, and the second slider is used to adjust the horizontal position of the conductive pin and the spacing between adjacent conductive pins. After the position is adjusted, the first slider and the second slider are locked and fixed by bolts to prevent them from moving. Limit blocks are fixed at both ends of the first guide rail to prevent the first slider from sliding out.

[0007] Preferably, the magnetic suction mechanism consists of multiple magnetic suction cups of the same size, each equipped with a battery or external power source. Each magnetic suction cup is fixed to the end of one of the four horizontal connecting rods that connect the square frame to the back of the secondary switch cabinet door. When powered on, the auxiliary verification device body is fixed to the back of the secondary switch cabinet door by the magnetic suction cups. When powered off, the auxiliary verification device body can be easily removed from the back of the secondary switch cabinet door.

[0008] Preferably, the telescopic mechanism is a telescopic spring. One end of the telescopic spring is fixed to the second slider, and the other end is connected to the tail of the conductive pin. When the conductive pin is aligned with the wiring terminal of the multi-function power meter or the microcomputer protection device, the telescopic spring is manually pressed to compress it, and the needle of the conductive pin is inserted into the wiring terminal of the multi-function power meter or the microcomputer protection device. Then, the spring is released to return to its initial position. Due to the pressure of the telescopic spring itself, the needle is kept in contact with the wiring terminal, preventing the needle from slipping out of the wiring terminal. One end of the test lead passes through the telescopic spring through the test lead plug and is inserted into the test lead socket at the tail of the conductive pin. The other end is connected to the calibration device.

[0009] The beneficial effects of this utility model are as follows:

[0010] This utility model discloses a magnetic auxiliary calibration device, which serves as an intermediate device between the calibration platform and the metering instrument, and is used to calibrate the metering instrument of the medium-voltage switch in the power plant.

[0011] In terms of performance, compared to traditional medium-voltage switchgear and protection calibration, it offers advantages such as enhanced safety, higher operational efficiency, and reduced maintenance labor costs, making it highly suitable for the calibration of medium-voltage switchgear in power generation companies. Details are as follows:

[0012] 1) The device is directly attached to the door of the secondary switch cabinet. Its built-in conductive part is connected to the terminal of the meter. The calibration bench is connected to the auxiliary device through the test line. The entire calibration process does not require disconnection of the wiring, making the operation very convenient.

[0013] 2) Good safety performance. Since there is no need for maintenance personnel to disconnect the wiring, it avoids the risk of operation errors and accidental contact with live circuits by maintenance personnel, thus ensuring the safety of equipment and maintenance personnel.

[0014] 3) Metering work can be easily carried out by 2 people, reducing the company's maintenance labor costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a schematic diagram of the external inspection device of this utility model.

[0018] Figure 4 This is a structural diagram of the present invention without its components installed.

[0019] Figure 5 This is a diagram showing the usage state of this utility model when it is installed on the outside of a multi-functional meter.

[0020] Figure 6 This is a diagram showing the usage state of this utility model when it is installed on the outside of the microcomputer protection device. Detailed Implementation

[0021] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1-3As shown, a magnetic auxiliary verification device includes a multi-functional power meter 2, a microcomputer protection device 3, and at least one auxiliary verification device body sleeved on the outside of the multi-functional power meter 2 and the microcomputer protection device 3, all mounted on the back 1 of the secondary switch compartment door. The auxiliary verification device body consists of a square frame 4 composed of multiple horizontally and vertically arranged connecting rods, an adjustment mechanism, a magnetic attraction mechanism, and conductive pins 5. A magnetic attraction mechanism is installed on the side of the square frame 4 closest to the back 1 of the secondary switch compartment door, achieving magnetic fixation between the square frame 4 and the back 1 of the secondary switch compartment door. An adjustment mechanism is installed on the side of the square frame 4 away from the back 1 of the secondary switch compartment door. Multiple conductive pins 5 are mounted on the upper part via a telescopic mechanism. The tips 6 of the conductive pins 5 face the wiring terminals on the back of the multi-functional power meter or microcomputer protection device inside the square frame. The relative positions of the conductive pins 5 are adjusted by an adjustment mechanism so that the position of the conductive pins 5 is directly opposite the wiring terminals 7 of the multi-functional power meter or microcomputer protection device. Then, the telescopic mechanism is adjusted to ensure that the tips 6 of the conductive pins 5 (with the tips facing the same direction) are inserted into the wiring terminals 7 on the back of the multi-functional power meter or microcomputer protection device. A test wire socket 8 is provided at the tail of each conductive pin 5 on the side away from the wiring terminal 7. The test wire socket 8 is connected to the calibration device 10 through an external test wire 9.

[0024] The adjustment mechanism consists of two vertical first guide rails 11, at least two horizontal second guide rails 12, a first slider 13, and a second slider 14. The two vertical first guide rails 11 are bolted to the back of the square frame 4 away from the secondary cabinet door 1, and the length of the first guide rail 11 is the same as the length of the vertical connecting rod 15 of the square frame 4. Two horizontal second guide rails 12 are arranged vertically between the two opposing vertical connecting rods 15. The length of each second guide rail 12 is the same as the distance between the two vertical first guide rails 11. A first slider 13 is fixed at each of the left and right ends of each second guide rail 12. The first slider 13 is embedded in the first guide rail 11 and can be adjusted on the first guide rail. The first guide rail 11 moves up and down, thereby driving the second guide rail 12 to move up and down between the two first guide rails 11. Multiple second sliders 14 are embedded in each second guide rail 12. Each second slider 14 is equipped with a conductive pin 5 through a telescopic mechanism. The second slider 14 can move left and right within the second guide rail 12. The first slider 13 is used to adjust the vertical position of the conductive pin 5, and the second slider 14 is used to adjust the horizontal position of the conductive pin 5 and the spacing between adjacent conductive pins 5. After the position is adjusted, the first slider 13 and the second slider 14 are locked and fixed by bolts to prevent them from moving. Limit blocks 16 are fixed at both ends of the first guide rail 11 to prevent the first slider 13 from sliding out.

[0025] The magnetic suction mechanism consists of multiple magnetic suction cups 17 of the same size, each equipped with a battery or external power source. Each magnetic suction cup 17 is fixed to the end of one of the four horizontal connecting rods 18 that connect the square frame 4 to the back of the secondary switch cabinet door 1. When powered on, the auxiliary verification device body is fixed to the back of the secondary switch cabinet door 1 by the magnetic suction cups 17. When powered off, the auxiliary verification device body can be easily removed from the back of the secondary switch cabinet door 1.

[0026] The telescopic mechanism is a telescopic spring 19. One end of the telescopic spring 19 is fixed to the second slider 14, and the other end is connected to the tail of the conductive pin 5. When the conductive pin 5 is aligned with the wiring terminal of the multi-function power meter or the microcomputer protection device, the telescopic spring 19 is manually pressed to compress it, and the needle 6 of the conductive pin 5 is inserted into the wiring terminal 7 of the multi-function power meter or the microcomputer protection device. Then, the pressure of the telescopic spring 19 is released to return the telescopic spring 19 to its initial position. Due to the pressure of the telescopic spring 19 itself, the needle 6 is kept in contact with the wiring terminal 7 to prevent it from slipping out of the wiring terminal 7. One end of the test wire 9 passes through the telescopic spring through the test wire plug 20 and is inserted into the test wire socket 8 at the tail of the conductive pin. The other end is connected to the calibration device 10.

[0027] For ease of understanding, the following is provided Figure 4-6 The three figures shown are a structural diagram without the present invention installed, a usage diagram with the present invention installed on the outside of the multi-functional meter, and a usage diagram with the present invention installed on the outside of the microcomputer protection device. It is worth noting that the number of auxiliary verification devices of the present invention can be adjusted according to actual needs (there can be one or more), and their number corresponds to the number of multi-functional meters and microcomputer protection devices.

[0028] Furthermore, since the wiring terminals of multi-function meters are mostly horizontally arranged, while the wiring terminals of microcomputer protection devices are mostly vertically arranged, the square frame of the entire auxiliary verification device can be rotated at the corresponding angle according to the actual situation, which can solve the problem of the wiring terminal position arrangement in the two different arrangements.

[0029] The design features of this utility model are as follows:

[0030] In terms of performance, compared to traditional medium-voltage switchgear and protection calibration, it offers advantages such as enhanced safety, higher operational efficiency, and reduced maintenance labor costs, making it highly suitable for the calibration of medium-voltage switchgear in power generation companies. Details are as follows:

[0031] The device is directly attached to the secondary compartment door of the switch, and its built-in conductive part is connected to the terminal of the meter. The calibration platform is connected to the auxiliary device through the test line. The entire calibration process does not require disconnecting the wiring, making the operation very convenient.

[0032] It has good safety performance. Since there is no need for maintenance personnel to disconnect the wiring, it avoids the risk of operation errors and accidental contact with live circuits, thus ensuring the safety of equipment and maintenance personnel.

[0033] Metering work can be easily carried out by just two people, reducing the company's maintenance labor costs.

[0034] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A magnetic auxiliary verification device, comprising a multi-functional power meter (2), a microcomputer protection device (3) installed on the back (1) of a switch secondary compartment door, and at least one auxiliary verification device body sleeved on the outside of the multi-functional power meter (2) and the microcomputer protection device (3), characterized in that: The auxiliary verification device consists of a square frame (4) composed of multiple horizontally and vertically arranged connecting rods, an adjustment mechanism, a magnetic attraction mechanism, and conductive pins (5). A magnetic attraction mechanism is installed on the side of the square frame (4) near the back of the secondary switch cabinet door, achieving magnetic fixation between the square frame (4) and the back of the secondary switch cabinet door (1). An adjustment mechanism is installed on the side of the square frame (4) away from the back of the secondary switch cabinet door (1), and multiple conductive pins (5) are installed on the adjustment mechanism via a telescopic mechanism. The tips (6) of the conductive pins (5) face inwards towards the multifunctional area inside the square frame. On the side of the wiring terminal on the back of the power meter or microcomputer protection device, the relative position of the conductive pin (5) is adjusted by the adjustment mechanism so that the position of the conductive pin (5) is directly opposite the wiring terminal (7) of the multi-function power meter or microcomputer protection device. Then, the needle (6) of the conductive pin (5) is inserted into the wiring terminal (7) on the back of the multi-function power meter or microcomputer protection device by the adjustment telescopic mechanism. A test wire socket (8) is provided at the tail of each conductive pin (5) on the side away from the wiring terminal (7). The test wire socket (8) is connected to the calibration device (10) through an external test wire (9).

2. The magnetic auxiliary verification device according to claim 1, characterized in that: The adjustment mechanism consists of two vertical first guide rails (11), at least two horizontal second guide rails (12), a first slider (13), and a second slider (14). The two vertical first guide rails (11) are fixed to the back of the square frame (4) away from the secondary storage door (1) by bolts, and the length of the first guide rails (11) is the same as the length of the vertical connecting rods (15) of the square frame (4). Two horizontal second guide rails (12) are arranged vertically between the two oppositely arranged vertical connecting rods (15). The length of each second guide rail (12) is the same as the distance between the two vertical first guide rails (11). A first slider (13) is fixed at each of the left and right ends of each second guide rail (12). The first sliders (13) are embedded in the first guide rails (11) and can be adjusted on the first guide rails (14). 11) Move up and down inside, thereby driving the second guide rail (12) to move up and down between the two first guide rails (11). Multiple second sliders (14) are embedded in each second guide rail (12). Each second slider (14) is equipped with a conductive pin (5) through a telescopic mechanism. The second slider (14) can move left and right inside the second guide rail (12). The first slider (13) is used to adjust the vertical position of the conductive pin (5), and the second slider (14) is used to adjust the horizontal position of the conductive pin (5) and the spacing between adjacent conductive pins (5). After the position is adjusted, the first slider (13) and the second slider (14) are locked and fixed by bolts to prevent them from moving. Limit blocks (16) are fixed at both ends of the first guide rail (11) to prevent the first slider (13) from sliding out.

3. The magnetic auxiliary verification device according to claim 1 or 2, characterized in that: The magnetic suction mechanism consists of multiple magnetic suction cups (17) of the same size with batteries or external power sources. Each magnetic suction cup (17) is fixed to the end of four horizontal connecting rods (18) that connect the square frame (4) to the back of the secondary switch cabinet door (1). After power is applied, the auxiliary verification device body is fixed to the back of the secondary switch cabinet door (1) by the magnetic suction cups (17). After power is cut off, it is convenient to remove the auxiliary verification device body from the back of the secondary switch cabinet door (1).

4. The magnetic auxiliary verification device according to claim 1 or 2, characterized in that: The telescopic mechanism is a telescopic spring (19). One end of the telescopic spring (19) is fixed to the second slider (14), and the other end is connected to the tail of the conductive pin (5). When the conductive pin (5) is aligned with the wiring terminal of the multi-function power meter or microcomputer protection device, the telescopic spring (19) is manually pressed to compress it, and the needle (6) of the conductive pin (5) is inserted into the wiring terminal (7) of the multi-function power meter or microcomputer protection device. Then, the telescopic spring (19) is released to return to its initial position. Due to the pressure of the telescopic spring (19) itself, the needle (6) is pressed forward against the wiring terminal (7) to prevent the needle (6) from sliding out of the wiring terminal (7). One end of the test line (9) passes through the telescopic spring through the test line plug (20) and is inserted into the test line socket (8) at the tail of the conductive pin. The other end is connected to the calibration device (10).

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