A high-voltage switch cabinet capable of diagnosing system faults

Abstract

The present invention discloses a high-voltage switch cabinet capable of diagnosing system faults, comprising a cabinet body and a door panel for installing electrical components, the door panel being hinged to the cabinet body through a hinge, and the door panel and the side wall of the cabinet body being provided with a buckle lock, a multimeter being installed on the outer side of the door panel, and a detection component for detecting system faults of the high-voltage switch cabinet being provided on the outer side wall of the door panel; the detection component comprising a fixing plate and a detection probe, one end of the detection probe passing through the fixing plate and the door panel being located inside the cabinet body, and the fixing plate being installed on the outer side of the door panel through an elastic component, and the detection probe being arranged in a one-to-one correspondence with the wiring pins. In the present invention, when the high-voltage cabinet needs to be diagnosed, the internal electrical components can be diagnosed and checked without opening the door panel, which avoids opening the high-voltage cabinet when the internal safety of the high-voltage switch cabinet is not certain to a certain extent, and reduces the risk compared with the existing diagnosis method.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-voltage switch cabinets, and in particular relates to a high-voltage switch cabinet capable of diagnosing system faults; the present invention also relates to a diagnosis method for a high-voltage switch cabinet capable of diagnosing system faults. Background Art

[0002] High-voltage switchgear refers to the switchgear used for switching, controlling or protecting in power generation, transmission, distribution, energy conversion and consumption of power systems.

[0003] When an abnormal power outage occurs in the existing high-voltage switchgear, professional personnel are required to open the cabinet for diagnosis, and then repair or replace the electrical components. When it is not certain that the high-voltage switchgear is absolutely safe, opening the high-voltage cabinet is a very dangerous operation. Furthermore, when opening the high-voltage cabinet for inspection, it is necessary to manually align the two sets of detection probes of the multimeter with the wiring pins of the electrical components, which is not only very inconvenient, but also because there are many wires inside the high-voltage cabinet, it is easy to accidentally touch the wires, and there is also a risk of electric shock. For this reason, we propose a high-voltage switchgear that can diagnose system faults to solve the problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a high-voltage switch cabinet capable of diagnosing system faults, so as to solve the problem in the prior art mentioned in the above background technology that when it is uncertain whether the interior of the high-voltage switch cabinet is absolutely safe, opening the high-voltage cabinet is a very dangerous operation.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-voltage switch cabinet capable of diagnosing system faults, comprising a cabinet body and a door panel for installing electrical components, wherein the door panel is hinged to the cabinet body through a hinge, and the door panel and the side wall of the cabinet body are provided with a buckle lock, the cabinet body is respectively provided with a wire tube for passing a power line, and an installation box for placing electrical components is integrally formed on the inner wall of the cabinet body, and the lower end of the installation box is provided with wiring pins for wiring the electrical components;

[0007] A multimeter is installed on the outer side of the door panel, and a detection component for detecting a fault of a high-voltage switch cabinet system is arranged on the outer side wall of the door panel;

[0008] The detection assembly includes a fixing plate and a detection probe, one end of the detection probe passes through the fixing plate and the door panel and is located inside the cabinet, and the fixing plate is installed on the outside of the door panel through an elastic assembly, and the detection probe is arranged in a one-to-one correspondence with the wiring pins;

[0009] The other end of the detection probe is provided with a connector with external insulation and internal conductivity, and a wire is plugged and fixed on the conductive connector, and one end of the wire is electrically connected to the input end of the multimeter.

[0010] Preferably, the wire is configured as a coil spring wire, and conductive pins are provided at both ends of the wire, and the conductive pins at both ends of the wire are respectively plugged into a conductive connector and an input end of a multimeter.

[0011] Preferably, a through hole is opened on the door panel, a transparent tempered glass plate is installed inside the through hole, and four sides of the transparent tempered glass plate are sealed and bonded inside the through hole by sealant.

[0012] Preferably, a threaded through hole is opened on the side wall of the wire passing tube at one end inside the cabinet, the internal thread of the threaded through hole is connected with a screw, one end of the screw is provided with a pressure plate for tightening the line in the wire passing tube, and two groups of sealing rings are provided on the inner wall of the wire passing tube, and the sealing ring is configured as an elastic sealing ring, and the inner ring of the sealing ring is fitted on the outer wall of the line in the wire passing tube.

[0013] Preferably, the fixing plate is configured as an insulating fixing plate, and a through hole for the detection probe to pass through is opened on the fixing plate, a limit plate is arranged on the detection probe, and the limit plate and the conductive connector are respectively located on both sides of the fixing plate.

[0014] Preferably, the elastic component includes a sleeve, an inner rod and a compression spring. The inner rod is slidably mounted inside the sleeve, and a limiting block is integrally formed at one end of the inner rod located inside the sleeve. The two ends of the compression spring respectively abut against the inner wall of the sleeve and the upper surface of the limiting block.

[0015] Preferably, a hand-held block is provided at one end of the wire connected to the multimeter, and the hand-held block is configured as an elastic rubber insulating hand-held block.

[0016] A high-voltage switch cabinet capable of diagnosing system faults, wherein the diagnosis method of the high-voltage switch cabinet capable of diagnosing system faults comprises the following steps:

[0017] S1. When the high-voltage switch cabinet is abnormally powered off, one set of detection components is connected to a multimeter through a wire;

[0018] S2, then manually press down the fixing plate of the detection component group. Due to the action of the elastic component, the fixing plate will move toward the door panel, thereby driving the detection probe to move;

[0019] S3. Since one end of the detection probe is located inside the cabinet, and the detection probe and the wiring pins are arranged in a one-to-one correspondence, when the detection probe moves into the cabinet, it touches the wiring pins, and a group of electrical components in the cabinet are detected by the multimeter;

[0020] S4. Connect the wires to all the detection components in sequence to diagnose and troubleshoot the electrical components in the cabinet in the manner of step S3;

[0021] S5. Repair or replace damaged electrical components directly based on the inspection results.

[0022] Preferably, in step S1, when connecting one set of detection components to the multimeter through a wire, when the conductive pin at one end of the wire is inserted into the conductive connector, it is necessary to place the hand between the fixed plate and the door panel to ensure that the detection probe does not accidentally touch the wiring pin when the conductive pin is inserted.

[0023] Technical effects and advantages of the present invention: Compared with the prior art, the high-voltage switchgear capable of diagnosing system faults proposed by the present invention has the following advantages:

[0024] 1. In the present invention, when the high-voltage cabinet needs to be diagnosed, the internal electrical components can be diagnosed and checked without opening the door panel, which to a certain extent avoids opening the high-voltage cabinet when it is uncertain whether the interior of the high-voltage switch cabinet is absolutely safe. Compared with the existing diagnostic method, the risk is reduced;

[0025] 2. The present invention adopts the design of elastic components and detection components, and sets the detection probes of the detection components in one-to-one correspondence with the wiring pins. After the detection component is connected to the multimeter through a wire, it is only necessary to press down the fixing plate of the detection component to make the detection probes touch the wiring pins of the electrical component. Compared with the existing method that requires manual alignment of the two sets of detection probes of the multimeter with the wiring pins of the electrical component, not only is the alignment convenient and accurate, but it also avoids the risk of accidentally touching the wires to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a high-voltage switch cabinet capable of diagnosing system faults according to the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the cabinet of the present invention;

[0028] Figure 3 For the present invention Figure 2 A partial cross-sectional view of the structure at point A in FIG.

[0029] Figure 4 It is a structural schematic diagram of the door panel of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the detection component of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the elastic component of the present invention;

[0032] Figure 7 It is a schematic diagram of the conductor structure of the present invention.

[0033] In the figure: 1. cabinet; 2. door panel; 3. buckle lock; 4. wire tube; 5. installation box; 6. wiring pins; 7. multimeter; 8. detection component; 9. fixing plate; 10. detection probe; 11. elastic component; 12. connector; 13. wire; 14. conductive pin; 15. through hole; 16. transparent tempered glass plate; 17. threaded through hole; 18. screw; 19. pressure plate; 20. sealing ring; 21. through hole; 22. limit plate; 23. sleeve; 24. inner rod; 25. compression spring; 26. limit block; 27. hand-held block. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0035] The present invention provides Figure 1-7 A high voltage switch cabinet capable of diagnosing system faults is shown

[0036] The cabinet comprises a cabinet body 1 and a door panel 2 for installing electrical components. The door panel 2 is hinged to the cabinet body 1 through a hinge, and a hasp lock 3 is provided between the door panel 2 and the side wall of the cabinet body 1. A through hole 15 is provided on the door panel 2, and a transparent tempered glass plate 16 is installed inside the through hole 15. The four sides of the transparent tempered glass plate 16 are sealed and bonded inside the through hole 15 by a sealant.

[0037] Through the above design, when the high-voltage cabinet needs to be diagnosed, the maintenance personnel can visually inspect the interior of the cabinet 1 through the transparent tempered glass plate 16 to observe whether there is an open flame, thereby further providing safety protection for the subsequent opening of the high-voltage cabinet;

[0038] The cabinet 1 is provided with a wire tube 4 for passing the power line, and an installation box 5 for placing electrical components is integrally formed on the inner wall of the cabinet 1. The lower end of the installation box 5 is provided with a wiring pin 6 for wiring the electrical components. A threaded through hole 17 is provided on the side wall of the wire tube 4 at one end inside the cabinet 1. The internal thread of the threaded through hole 17 is connected with a screw 18. One end of the screw 18 is provided with a pressing plate 19 for pressing the line in the wire tube 4. Two sets of sealing rings 20 are provided on the inner wall of the wire tube 4, and the sealing ring 20 is set as an elastic sealing ring, and the inner ring of the sealing ring 20 is fitted on the outer wall of the line in the wire tube 4.

[0039] Through the above design, the sealing of the high-voltage cabinet is ensured when the wiring is used, and the line is pressed by rotating the screw 18 to drive the pressing plate 19, which also reduces the risk of the connecting wire inside the high-voltage cabinet body 1 being broken. When the high-voltage cabinet is in use, the connection of the internal connecting wire can be ensured;

[0040] A multimeter 7 is installed on the outer side of the door panel 2, and a detection component 8 for detecting faults of the high-voltage switch cabinet system is arranged on the outer side wall of the door panel 2;

[0041] The detection assembly 8 includes a fixing plate 9 and a detection probe 10, one end of the detection probe 10 passes through the fixing plate 9 and the door panel 2 and is located inside the cabinet 1, and the fixing plate 9 is installed on the outer side of the door panel 2 through an elastic component 11, the detection probe 10 and the wiring pin 6 are arranged in a one-to-one correspondence, the fixing plate 9 is arranged as an insulating fixing plate, and the fixing plate 9 is provided with a through hole 21 for the detection probe 10 to pass through, and a limit plate 22 is arranged on the detection probe 10, and the limit plate 22 and the conductive joint 12 are respectively located on both sides of the fixing plate 9;

[0042] The elastic component 11 includes a sleeve 23, an inner rod 24 and a compression spring 25. The inner rod 24 is slidably sleeved inside the sleeve 23, and a limiting block 26 is integrally formed at one end of the inner rod 24 located inside the sleeve 23. The two ends of the compression spring 25 respectively abut against the inner wall of the sleeve 23 and the upper surface of the limiting block 26.

[0043] The design of the elastic component 11 not only makes the contact between the detection probe 10 and the wiring pin 6 accurate and convenient, but also, during the detection and diagnosis, due to the action of the compression spring 25 in the elastic component 11, the contact between the detection probe 10 and the wiring pin 6 can be disconnected at the moment when the maintenance personnel withdraw their hands, further ensuring that the maintenance personnel will not have the risk of electric shock;

[0044] The other end of the detection probe 10 is provided with a connector 12 which is insulated outside and conductive inside, and a wire 13 is plugged and fixed on the conductive connector 12, one end of the wire 13 is electrically connected to the input end of the multimeter 7, the wire 13 is set as a spiral spring wire, and both ends of the wire 13 are provided with conductive pins 14, the conductive pins 14 at both ends of the wire 13 are respectively plugged into the conductive connector 12 and the input end of the multimeter 7, and the end of the wire 13 connected to the multimeter 7 is provided with a hand-held block 27, and the hand-held block 27 is set as an elastic rubber insulating hand-held block;

[0045] The multimeter 7 is a digital multimeter. The measurement process of the multimeter 7 is that the conversion circuit converts the measured value into a DC voltage signal, and then the analog / digital (A / D) converter converts the voltage analog quantity into a digital quantity, and then counts it through an electronic counter, and finally the measurement result is directly displayed on the display screen in digital form.

[0046] The voltage, current and resistance measurement functions of a multimeter are realized through the conversion circuit part, and the measurement of current and resistance are based on the measurement of voltage, that is to say, the digital multimeter is expanded on the basis of the digital DC voltmeter;

[0047] The A / D converter of the digital DC voltmeter converts the analog voltage that changes continuously with time into a digital quantity, and then the electronic counter counts the digital quantity to obtain the measurement result, and then the decoding display circuit displays the measurement result. The logic control circuit controls the coordinated work of the circuit and completes the entire measurement process in sequence under the action of the clock;

[0048] The above structural design allows the internal electrical components to be diagnosed and checked without opening the door panel 2 when the high-voltage cabinet needs to be diagnosed. This avoids opening the high-voltage cabinet when the high-voltage switch cabinet is not absolutely safe to a certain extent, and reduces the risk compared to the existing diagnostic method.

[0049] Through the design of the elastic component 11 and the detection component 8, and the one-to-one correspondence between the detection probe 10 of the detection component 8 and the wiring pin 6, after the detection component 8 is connected to the multimeter 7 through the wire 13, it is only necessary to press down the fixing plate 9 of the detection component 8 to make the detection probe 10 touch the wiring pin 6 of the electrical component. Compared with the existing method that requires manual alignment of the two sets of detection probes 10 of the multimeter 7 with the wiring pin 6 of the electrical component, not only is the alignment convenient and accurate, but it also avoids the risk of accidentally touching the wire to a certain extent. Example

[0050] Based on Example 1, the diagnostic method for a high-voltage switch cabinet capable of diagnosing system faults comprises the following steps:

[0051] S1. When the high-voltage switch cabinet is abnormally powered off, one set of detection components is connected to a multimeter through a wire;

[0052] In step S1, when connecting one set of detection components to the multimeter through a wire, when inserting the conductive pin at one end of the wire into the conductive connector, you need to place your hand between the fixing plate and the door panel to ensure that the detection probe does not accidentally touch the wiring pin when inserting the conductive pin.

[0053] S2, then manually press down the fixing plate of the detection component group. Due to the action of the elastic component, the fixing plate will move toward the door panel, thereby driving the detection probe to move;

[0054] Among them, since the fixing plate of the detection component is set as an insulating fixing plate, the maintenance personnel manually press the fixing plate to greatly reduce the risk of electric shock;

[0055] S3. Since one end of the detection probe is located inside the cabinet, and the detection probe and the wiring pins are arranged in a one-to-one correspondence, when the detection probe moves into the cabinet, it touches the wiring pins, and a group of electrical components in the cabinet are detected by the multimeter;

[0056] S4. Connect the wires to all the detection components in sequence to diagnose and troubleshoot the electrical components in the cabinet in the manner of step S3;

[0057] Among them, the wires are connected to different detection components to diagnose and check the electrical components in the cabinet. Since the design in the above embodiment 1 can ensure that the detection probe and the wiring pins of the electrical components are conveniently and accurately aligned, the time for diagnosing the internal electrical components of the high-voltage cabinet is improved from the side.

[0058] S5. Repair or replace damaged electrical components directly based on the inspection results.

[0059] The diagnostic method for high-voltage switchgear capable of diagnosing system faults proposed in the above-mentioned embodiment 1, compared with the existing method of opening the high-voltage cabinet for inspection, requires manual alignment of the two sets of detection probes of the multimeter with the wiring pins of all electrical components. This improves the diagnostic efficiency while minimizing the risk of electric shock for diagnostic personnel.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-voltage switch cabinet capable of diagnosing system faults, comprising a cabinet body (1) for mounting electrical components and a door panel (2), wherein the door panel (2) is hingedly connected to the cabinet body (1) via a hinge, and a hasp lock (3) is provided between the door panel (2) and the side wall of the cabinet body (1), characterized in that: The cabinet (1) is provided with a wire tube (4) for passing a power line, and an installation box (5) for placing an electrical component is integrally formed on the inner wall of the cabinet (1), and a wiring pin (6) for wiring the electrical component is provided at the lower end of the installation box (5); A multimeter (7) is installed on the outer side of the door panel (2), and a detection component (8) for detecting faults in the high-voltage switch cabinet system is arranged on the outer side wall of the door panel (2); The detection component (8) comprises a fixing plate (9) and a detection probe (10), one end of the detection probe (10) passes through the fixing plate (9) and the door panel (2) and is located inside the cabinet (1), and the fixing plate (9) is mounted on the outside of the door panel (2) via an elastic component (11), and the detection probe (10) and the wiring pin (6) are arranged in a one-to-one correspondence; The other end of the detection probe (10) is provided with a connector (12) with external insulation and internal conductivity, and a wire (13) is plugged and fixed on the conductive connector (12), and one end of the wire (13) is electrically connected to the input end of the multimeter (7); The wire (13) is configured as a coil spring wire, and both ends of the wire (13) are provided with conductive pins (14), and the conductive pins (14) at both ends of the wire (13) are respectively plugged into the conductive connector (12) and the input end of the multimeter (7); The door panel (2) is provided with a through hole (15), a transparent tempered glass plate (16) is installed inside the through hole (15), and the four sides of the transparent tempered glass plate (16) are sealed and bonded inside the through hole (15) by means of a sealant; A threaded through hole (17) is provided on a side wall of one end of the wire passing tube (4) located inside the cabinet (1); a screw rod (18) is connected to the internal thread of the threaded through hole (17); a pressing plate (19) for pressing the line inside the wire passing tube (4) is provided at one end of the screw rod (18); two sets of sealing rings (20) are provided on the inner wall of the wire passing tube (4); the sealing rings (20) are configured as elastic sealing rings, and the inner ring of the sealing ring (20) is fitted on the outer wall of the line inside the wire passing tube (4).

2. A high-voltage switch cabinet capable of diagnosing system faults according to claim 1, characterized in that: The fixing plate (9) is configured as an insulating fixing plate, and the fixing plate (9) is provided with a through hole for the detection probe (10) to pass through. (21), a limit plate (22) is provided on the detection probe (10), and the limit plate (22) and the conductive connector (12) are respectively located on two sides of the fixed plate (9).

3. A high-voltage switch cabinet capable of diagnosing system faults according to claim 1, characterized in that: The elastic component (11) comprises a sleeve (23), an inner rod (24) and a compression spring (25), wherein the inner rod (24) is slidably sleeved on the sleeve. (23), and a limiting block (26) is integrally formed at one end of the inner rod (24) located inside the sleeve (23), and two ends of the compression spring (25) respectively abut against the inner wall of the sleeve (23) and the upper surface of the limiting block (26).

4. A high-voltage switch cabinet capable of diagnosing system faults according to claim 1, characterized in that: One end of the wire (13) connected to the multimeter (7) is provided with a hand-held block (27), and the hand-held block (27) is configured as an elastic rubber insulating hand-held block.

5. A high-voltage switchgear capable of diagnosing system faults according to any one of claims 1 to 4, characterized in that: The diagnostic method of the high-voltage switch cabinet capable of diagnosing system faults comprises the following steps: S1. When the high-voltage switch cabinet is abnormally powered off, one set of detection components is connected to a multimeter through a wire; S2, then manually press down the fixing plate of the detection component. Due to the action of the elastic component, the fixing plate will move toward the door panel. Thereby driving the detection probe to move; S3. Since one end of the detection probe is located inside the cabinet, and the detection probe is set one-to-one with the wiring pin, As the probe moves into the cabinet, it touches the wiring pins, and a group of electrical components in the cabinet are tested through the multimeter; S4, using the method in step S3, connect the wires to all the detection components in sequence to diagnose and troubleshoot the electrical components in the cabinet; S5. Repair or replace damaged electrical components directly based on the inspection results.

6. The high-voltage switchgear capable of diagnosing system faults according to claim 5, characterized in that: In step S1, when one of the detection components is connected to the multimeter through a wire, when the conductive pin at one end of the wire is inserted into the conductive connector, You need to place your hand between the fixing plate and the door panel to ensure that the detection probe does not accidentally touch the wiring pin when inserting the conductive pin.

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