CN113314977A - High-voltage switch cabinet capable of diagnosing system fault and diagnosis method thereof - Google Patents

本发明公开了一种可诊断系统故障的高压开关柜，包括用于安装电气元件的柜体以及门板，所述门板通过合页与柜体铰接，且门板与柜体的侧壁设置有搭扣锁，所述门板的外侧安装有万用表，且所述门板的外侧壁上设置有用于检测高压开关柜系统故障的检测组件；所述检测组件包括固定板和检测探针，所述检测探针的一端贯穿固定板和门板位于柜体的内部，且所述固定板通过弹性组件安装于门板的外侧，所述检测探针与接线引脚呈一一对应设置。本发明中，在需要对高压柜进行诊断时，无需打开门板即可对内部电元件进行诊断排查，一定程度上避免了当不确定高压开关柜内部绝对安全时打开高压柜，相较于现有的诊断方式，降低了风险。

The invention discloses a high-voltage switch cabinet capable of diagnosing system faults. A multimeter is installed on the outer side of the door panel, and a detection component for detecting the failure of the high-voltage switchgear system is provided on the outer side wall of the door panel; the detection component includes a fixed plate and a detection probe, and the detection probe is One end penetrates through the fixed plate and the door plate and is located inside the cabinet, and the fixed plate is installed on the outer side of the door plate through the elastic component, and the detection probes and the wiring pins are arranged in a one-to-one correspondence. 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 absolute safety of the inside of the high-voltage switch cabinet is not determined to a certain extent. diagnostic method, reducing the risk.

High-voltage switch cabinet capable of diagnosing system fault and diagnosis method thereof

Technical Field

The invention belongs to the technical field of high-voltage switch cabinets, and particularly relates to a high-voltage switch cabinet capable of diagnosing system faults; the invention also relates to a diagnosis method of the high-voltage switch cabinet capable of diagnosing the system fault.

Background

The high-voltage switch cabinet is used for power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system and plays roles of on-off, control or protection and the like.

Current high tension switchgear is when the unusual outage appears, need professional's personnel's diagnosis of unbooking, then maintain it or change electric elements, when the inside absolute safety of uncertain high tension switchgear, it is a very dangerous operation to open the high tension switchgear, moreover, current when examining the high tension switchgear unbooking, need the manual work to align two sets of detection probe of universal meter and electric elements's wiring pin, not only very inconvenient, and because the inside winding displacement of high tension switchgear is many, the electric wire is touched by mistake very easily, also have the risk of electrocuteeing, we provide a high tension switchgear of diagnostic system trouble for this reason and solve the problem that exists among the prior art.

Disclosure of Invention

The invention aims to provide a high-voltage switch cabinet capable of diagnosing system faults, and aims to solve the problem that the opening of the high-voltage switch cabinet is a very dangerous operation when the absolute safety inside the high-voltage switch cabinet is uncertain in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-voltage switch cabinet capable of diagnosing system faults comprises a cabinet body and a door plate, wherein the cabinet body is used for mounting electric elements, the door plate is hinged with the cabinet body through hinges, hasp locks are arranged on the side walls of the door plate and the cabinet body, wire passing pipes for power supply lines to pass through are respectively arranged on the cabinet body, a mounting box for placing the electric elements is integrally formed on the inner wall of the cabinet body, and a wiring pin for wiring the electric elements is arranged at the lower end of the mounting box;

the universal meter is mounted on the outer side of the door plate, and a detection assembly for detecting the system fault of the high-voltage switch cabinet is arranged on the outer side wall of the door plate;

the detection assembly comprises a fixing plate and detection probes, one end of each detection probe penetrates through the fixing plate and the door plate and is positioned in the cabinet body, the fixing plate is installed on the outer side of the door plate through an elastic assembly, and the detection probes and the wiring pins are arranged in a one-to-one correspondence manner;

the other end of the detection probe is provided with an external insulation internal conductive joint, a wire is fixedly spliced on the conductive joint, and one end of the wire is electrically connected with the input end of the universal meter.

Preferably, the wire is set to be a spiral spring wire, conductive pins are arranged at two ends of the wire, and the conductive pins at the two ends of the wire are respectively inserted into the conductive connectors and the input end of the multimeter.

Preferably, the door plate is provided with a through hole, a transparent toughened glass plate is arranged in the through hole, and four edges of the transparent toughened glass plate are sealed and bonded in the through hole through sealing glue.

Preferably, the wire passing pipe is provided with a threaded through hole on the side wall located at one end inside the cabinet body, the internal thread of the threaded through hole is connected with a screw rod, one end of the screw rod is provided with a pressing plate for pressing a circuit inside the wire passing pipe, two groups of sealing rings are arranged on the inner wall of the wire passing pipe, the sealing rings are elastic sealing rings, and the inner rings of the sealing rings are attached to the outer wall of the circuit inside the wire passing pipe.

Preferably, the fixed plate sets up to insulating fixed plate, just offer the via hole that is used for the test probe to pass on the fixed plate, be provided with the limiting plate on the test probe, just limiting plate and conductive joint are located the both sides of fixed plate respectively.

Preferably, the elastic component comprises a sleeve, an inner rod and a compression spring, the inner rod is sleeved inside the sleeve in a sliding mode, the inner rod is located at one end inside the sleeve and is integrally formed with a limiting block, and two ends of the compression spring respectively abut against the inner wall of the sleeve and the upper surface of the limiting block.

Preferably, one end of the wire connected with the multimeter is provided with a handheld block, and the handheld block is an elastic rubber insulation handheld block.

A 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 group of detection assemblies and the universal meter are connected through a lead;

s2, manually pressing down the fixing plate of the group of detection assemblies, wherein the fixing plate can move towards the door panel due to the action of the elastic assembly, so that the detection probes are driven to move;

s3, because one end of the detection probe is positioned in the cabinet body and the detection probe and the wiring pin are arranged in a one-to-one correspondence manner, when the detection probe moves in the cabinet body, the wiring pin can be touched, and a group of electric elements in the cabinet body are detected through a universal meter;

s4, sequentially connecting the lead with all the detection assemblies to diagnose and examine the electric elements in the cabinet body in the mode of the step S3;

and S5, directly repairing or replacing the damaged electric element according to the inspection result.

Preferably, in step S1, when one of the sets of detecting components is connected to the multimeter through a wire, the conductive pin at one end of the wire needs to be padded between the fixing plate and the door panel with the hand when being inserted into the conductive connector, so as to ensure that the detecting probe does not touch the wiring pin by mistake when the conductive pin is inserted.

The invention has the technical effects and advantages that: compared with the prior art, the high-voltage switch cabinet capable of diagnosing the system fault has the following advantages:

1. according to the invention, when the high-voltage cabinet needs to be diagnosed, the internal electrical elements can be diagnosed and checked without opening the door plate, so that the high-voltage cabinet is prevented from being opened to a certain extent when the internal absolute safety of the high-voltage switch cabinet is uncertain, and compared with the existing diagnosis mode, the risk is reduced;

2. according to the invention, through the design of the elastic assembly and the detection assembly, the detection probes of the detection assembly are arranged in one-to-one correspondence with the wiring pins, after the detection assembly is connected with the universal meter through the wires, the detection probes can touch the wiring pins of the electric element only by pressing down the fixing plate of the detection assembly, compared with the existing method that two groups of detection probes of the universal meter are aligned with the wiring pins of the electric element manually, the alignment is convenient and accurate, and the risk of mistakenly touching the electric wires is avoided to a certain extent.

Drawings

FIG. 1 is a schematic diagram of a high voltage switchgear capable of diagnosing system faults according to the present invention;

FIG. 2 is a schematic view of the internal structure of the cabinet of the present invention;

FIG. 3 is a partial cross-sectional view of the structure of FIG. 2 of the present invention at A;

FIG. 4 is a schematic view of a door panel according to the present invention;

FIG. 5 is a schematic structural view of a detecting assembly according to the present invention;

FIG. 6 is a schematic view of the elastic member of the present invention;

fig. 7 is a schematic view of a conductive line structure according to the present invention.

In the figure: 1. a cabinet body; 2. a door panel; 3. a hasp lock; 4. a wire passing pipe; 5. mounting a box; 6. a wiring pin; 7. a universal meter; 8. a detection component; 9. a fixing plate; 10. detecting the probe; 11. an elastic component; 12. a joint; 13. a wire; 14. a conductive pin; 15. a through hole; 16. a transparent tempered glass plate; 17. a threaded through hole; 18. a screw; 19. pressing a plate; 20. a seal ring; 21. a via hole; 22. a limiting plate; 23. a sleeve; 24. an inner rod; 25. a compression spring; 26. a limiting block; 27. and (4) a handheld block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The invention provides a high-voltage switch cabinet capable of diagnosing system faults as shown in figures 1-7

the multimeter 7 adopts a digital multimeter, the measurement process of the multimeter 7 is converted into a direct current voltage signal by a conversion circuit, then a voltage analog quantity is converted into a digital quantity by an analog/digital (A/D) converter, then the digital quantity is counted by an electronic counter, and finally the measurement result is directly displayed on a display screen by using a number;

the universal meter is used for measuring voltage, current and resistance, and the functions of measuring the voltage, the current and the resistance are realized through a conversion circuit part, and the measurement of the current and the resistance is based on the measurement of the voltage, namely the digital universal meter is formed by expanding on the basis of a digital direct current voltmeter;

the A/D converter of the digital DC voltmeter converts the analog voltage quantity which continuously changes along with the time into digital quantity, then the digital quantity is counted by the electronic counter to obtain the measuring result, then the measuring result is displayed by the decoding display circuit, the logic control circuit controls the coordination work of the circuits, and the whole measuring process is completed in sequence under the action of the clock;

Example 2

s1, when the high-voltage switch cabinet is abnormally powered off, one group of detection assemblies and the universal meter are connected through a lead;

in step S1, when one of the detecting assemblies is connected to the multimeter through the wire, the conductive pin at one end of the wire is inserted into the conductive connector, and the conductive pin is inserted between the fixing plate and the door panel, so as to ensure that the detecting probe does not mistakenly touch the wiring pin when the conductive pin is inserted

S2, manually pressing down the fixing plate of the group of detection assemblies, wherein the fixing plate can move towards the door panel due to the action of the elastic assembly, so that the detection probes are driven to move;

because the fixing plate of the detection assembly is an insulating fixing plate, the electric shock risk is greatly reduced when the maintainer manually presses the fixing plate;

s3, because one end of the detection probe is positioned in the cabinet body and the detection probe and the wiring pin are arranged in a one-to-one correspondence manner, when the detection probe moves in the cabinet body, the wiring pin can be touched, and a group of electric elements in the cabinet body are detected through a universal meter;

s4, sequentially connecting the lead with all the detection assemblies to diagnose and examine the electric elements in the cabinet body in the mode of the step S3;

and S5, directly repairing or replacing the damaged electric element according to the inspection result.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.