CN216560850U

CN216560850U - Mineral insulated cable voltage-withstanding detection device

Info

Publication number: CN216560850U
Application number: CN202122935839.2U
Authority: CN
Inventors: 沈汉财
Original assignee: Dongguan Zhongya Cable Co ltd
Current assignee: Dongguan Zhongya Cable Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-17
Anticipated expiration: 2031-11-26

Abstract

The utility model relates to a mineral insulated cable voltage-withstand test device in the field of electrical equipment, which comprises a control mechanism and a high-voltage test transformer, wherein the control mechanism comprises a control machine table, a conversion control box and a circuit conversion electric box, a cable output hole is formed in the rear end face of the control machine table, the circuit conversion electric box and the conversion control box are electrically connected through a control cable, the control cable penetrates through a control cable mounting hole to be electrically connected with a control coil of an electromagnetic relay, one end of the high-voltage cable is electrically connected with one end of a conduction switch of the electromagnetic relay, the other end of the high-voltage cable is electrically connected with a voltage-equalizing ball, the other end of the conduction switch of the electromagnetic relay is electrically connected with one end of the high-voltage output cable, and a wiring clamp is arranged at the other end of the high-voltage output cable, so that the test does not need to manually switch a test wire core, and the process is simple and clean, shorten check-out time, provide work efficiency, switch the sinle silk simultaneously and make the control through electromagnetic relay, realize electrical isolation, guarantee operating personnel's personal safety.

Description

Mineral insulated cable voltage-withstanding detection device

Technical Field

The utility model relates to the field of electrical equipment, in particular to a mineral insulated cable voltage withstand detection device.

Background

The cable voltage withstand test device is widely applied to industries such as electric power, metallurgy, petroleum, chemical engineering and the like, is suitable for handover and preventive tests of capacitive test articles with high capacity and high voltage, firstly enables a loop to generate series resonance by adjusting the output frequency of a variable frequency power supply, and then adjusts the output voltage of the variable frequency power supply under the condition of loop resonance to enable the voltage of the test articles to reach a test value. Due to the resonance of the loop, a higher test voltage can be generated on the sample CX by a smaller output voltage of the variable frequency power supply.

The existing cable voltage withstand test device is only provided with two wiring clamps, wiring terminals need to be continuously replaced when voltage withstand test is carried out on cables with multiple wire cores, the process is complicated, the detection time is long, the working efficiency is low, and operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects and provides a mineral insulated cable voltage-withstanding detection device.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the mineral insulated cable voltage-withstand testing device comprises a control machine table and a high-voltage testing transformer, wherein the high-voltage testing transformer comprises a wiring mechanism and a discharging mechanism, the control mechanism comprises a control machine table, a conversion control box and a circuit conversion electric box, a cable output hole is formed in the rear end face of the control machine table, a plurality of terminal connection indicating lamps are arranged on the front end face of the conversion control box, a terminal switching button and a terminal disconnection button which correspond to the terminal connection indicating lamps are arranged on the front end face of the conversion control box, a control cable is arranged on the rear end face of the conversion control box, the circuit conversion electric box and the conversion control box are electrically connected through the control cable, the circuit conversion electric box comprises a high-voltage cable, a high-voltage output cable, a plurality of electromagnetic relays and a control cable mounting hole, and the control cable penetrates through the control cable mounting hole to be electrically connected with a control coil of the electromagnetic relays, carry out electric connection between the one end of high tension cable and the one end of electromagnetic relay's the switch that switches on, carry out electric connection between the other end of high tension cable and the discharge mechanism, carry out electric connection between the other end of electromagnetic relay switch on and the one end of high voltage output cable, the other end of high voltage output cable is equipped with the wiring clip, insert the wiring clip in the multi-thread core cable that awaits measuring, select the terminal switching button that required wiring clip corresponds, control scheme conversion electronic box is to the circular telegram of the electromagnetic relay control coil that corresponds, make high tension cable and the high voltage output cable switch-on that corresponds, realize switching-over live wire zero line's the switch-on object.

In the above description, as preferred scheme, the wiring mechanism includes the positive binding post of power, power negative binding post, positive binding post is measured to the instrument, negative binding post is measured to the instrument, high-pressure tail binding post and transformer shell ground terminal, the positive binding post of power, power negative binding post, positive binding post is measured to the instrument, negative binding post is measured to the instrument, the one end of high-pressure tail binding post and transformer shell ground terminal all is equipped with the binding nut, control board carries out electric connection through carrying out electric connection between the binding post that cable and high-voltage testing transformer correspond, control board controls and data monitoring through the cable to high-voltage testing transformer.

In the above description, as a preferred scheme, the discharge mechanism is a silicon stack short-circuit rod, the silicon stack short-circuit rod is fixedly installed on the top end surface of the high-voltage test transformer, a voltage-equalizing ball is arranged at the top of the silicon stack short-circuit rod, and the discharge mechanism outputs a test voltage to the line conversion electronic box.

In the above description, as a preferred scheme, a data display screen, a start button and an emergency stop button are arranged on the front end face of the control machine, the start button is pressed to enable the high-voltage test transformer to work, test voltage is generated and output to the line conversion electronic box through the high-voltage cable, the selected cable to be tested is subjected to voltage withstanding test, and voltage withstanding data is output to the data display screen through the instrument measurement positive wiring terminal and the instrument measurement negative wiring terminal to reflect test results.

In the above description, as a preferable mode, the front end surface of the switching control box is a first box door, and the first box door and the switching control box are movably connected through a hinge.

In the above description, as a preferred scheme, an oil valve is arranged at the top of the high-voltage test transformer, the oil valve is communicated with the inside of the high-voltage test transformer, and the transformer oil is poured into the inside of the high-voltage test transformer through the oil valve.

In the above description, as a preferable mode, the installation slide rail is provided inside the line conversion electronic box, and the electromagnetic relay is embedded inside the line conversion electronic box through the installation slide rail, so that the electromagnetic relay is stably installed inside the line conversion electronic box.

The beneficial effects produced by the utility model are as follows:

the cable withstand voltage test device need not change binding post when carrying out withstand voltage test to the cable of many sinle silks, inserts the sinle silk that corresponds with all clips before the test, makes the process succinct, shortens check-out time, provides work efficiency, switches over the sinle silk simultaneously and makes the control through electromagnetic relay, need not the hand and switches, has realized electrical isolation, has ensured operating personnel's personal safety.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged partial view of the structure of A in the present invention;

FIG. 3 is an enlarged partial view of the structure of B of the present invention;

FIG. 4 is a partial enlarged view of the structure of the present invention C;

FIG. 5 is a schematic view of the internal structure of the electric box for line conversion according to the present invention;

in the figure: the system comprises a control machine table 1, a conversion control box 2, a line conversion electronic box 3, a high-voltage test transformer 4, a control cable 5, a high-voltage cable 6, a wiring clamp 7, a data display screen 101, a start button 102, an emergency stop button 103, a terminal switching button 201, a terminal on indicator lamp 202, a terminal off button 203, an installation slide rail 301, a high-voltage output cable 302, an electromagnetic relay 303, a control cable installation hole 304, a positive power connection terminal 401, a negative power connection terminal 402, a positive instrument measurement connection terminal 403, a negative instrument measurement connection terminal 404, a high-voltage tail connection terminal 405, a transformer shell ground terminal 406, a silicon stack short-circuit rod 407, a voltage equalizing ball 408 and an oil valve 409.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.

Referring to fig. 1-5, the mineral insulated cable voltage withstand testing apparatus for implementation includes a control mechanism and a high voltage testing transformer 4, the high voltage testing transformer 4 includes a wiring mechanism and a discharging mechanism, the wiring mechanism includes a power positive terminal 401, a power negative terminal 402, an instrument measurement positive terminal 403, an instrument measurement negative terminal 404, a high voltage tail terminal 405 and a transformer housing ground terminal 406, each of the power positive terminal 401, the power negative terminal 402, the instrument measurement positive terminal 403, the instrument measurement negative terminal 404, the high voltage tail terminal 405 and the transformer housing ground terminal 406 has a terminal nut, the control machine 1 is electrically connected with the corresponding terminal of the high voltage testing transformer 4 through a cable, the discharging mechanism is a silicon stack short bar 407, the silicon stack short bar 407 is fixedly mounted on the top end face of the high voltage testing transformer 4, the top of the silicon stack short circuit rod 407 is provided with a voltage equalizing ball 408, the control mechanism comprises a control machine 1, a conversion control box 2 and a circuit conversion electronic box 3, the rear end face of the control machine 1 is provided with a cable output hole, the front end face of the conversion control box 2 is provided with five terminal connection indicator lamps 202, the front end face of the conversion control box 2 is provided with a terminal switching button 201 and a terminal disconnection button 203 corresponding to the terminal connection indicator lamps 202, the rear end face of the conversion control box 2 is provided with a control cable 5, one end of the control cable 5 is provided with the circuit conversion electronic box 3, the circuit conversion electronic box 3 comprises a mounting slide rail 301, a high voltage output cable 302, five electromagnetic relays 303 and a control cable mounting hole 304, the control cable 5 passes through the control cable mounting hole 304 to be electrically connected with a control coil of the electromagnetic relays 303, one end of the high voltage cable 6 is electrically connected with one end of a conduction switch of the electromagnetic relays 303, the other end of the high-voltage cable 6 is electrically connected with the discharging mechanism, the other end of the conduction switch of the electromagnetic relay 303 is electrically connected with one end of the high-voltage output cable 302, the other end of the high-voltage output cable 302 is provided with the wiring clamp 7, the wiring clamp 7 is connected into the multi-core cable to be tested, the terminal switching button 201 corresponding to the required wiring clamp 7 is selected, the control circuit conversion electric box 3 is controlled to electrify the corresponding electromagnetic relay 303 control coil, the high-voltage cable 6 is connected with the corresponding high-voltage output cable 302, and the connection object of the live wire and the zero line is switched.

The front end face of the control machine table 1 is provided with a data display screen 101, a start button 102 and an emergency stop button 103, the start button 102 is pressed to enable the high-voltage test transformer 4 to work, test voltage is produced and output to the line conversion electric box 3 through the high-voltage cable 6, voltage withstanding test is conducted on the selected cable to be tested, and voltage withstanding data are output to the data display screen 101 through the instrument measurement positive wiring terminal 403 and the instrument measurement negative wiring terminal 404 to reflect test results.

The front end face of the conversion control box 2 is a first box door, the first box door is movably connected with the conversion control box 2 through a hinge, an oil valve 409 is arranged at the top of the high-voltage test transformer 4, the oil valve 409 is communicated with the inside of the high-voltage test transformer 4, and transformer oil is filled into the inside of the high-voltage test transformer 4 through the oil valve 409.

The circuit conversion electronic box 3 is internally provided with an installation slide rail 301, and the electromagnetic relay 303 is nested in the circuit conversion electronic box 3 through the installation slide rail 301, so that the electromagnetic relay 303 is stably installed in the circuit conversion electronic box 3.

Selecting a terminal switching button 201 corresponding to a required connection clamp 7, controlling a line conversion electric box 3 to electrify a control coil of a corresponding electromagnetic relay 303, enabling a high-voltage cable 6 to be connected with a corresponding high-voltage output cable 302, realizing switching of a connection object of a live wire and a zero line, pressing a starting button 102 to enable a high-voltage test transformer 4 to work, generating test voltage, outputting the test voltage to the line conversion electric box 3 through the high-voltage cable 6, outputting the test voltage through the connected high-voltage output cable 302, carrying out voltage withstand test on the selected mineral insulated cable to be tested, outputting voltage withstand data to a data display screen 101 through an instrument measurement positive connecting terminal 403 and an instrument measurement negative connecting terminal 404 to reflect a test result, and stopping equipment work through an emergency stop button 103 when an accident occurs in the process of the test.

Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. Withstand voltage detection device of mineral insulated cable, including control mechanism and high-voltage test transformer, the high-voltage test transformer includes wiring mechanism and discharge mechanism, its characterized in that: the control mechanism comprises a control board, a conversion control box and a circuit conversion electric box, wherein the rear end face of the control board is provided with a cable output hole, the front end face of the conversion control box is provided with a plurality of terminal connection indicating lamps, the front end face of the conversion control box is provided with a terminal switching button and a terminal disconnection button which correspond to the terminal connection indicating lamps, the rear end face of the conversion control box is provided with a control cable, the circuit conversion electric box and the conversion control box are electrically connected through the control cable, the circuit conversion electric box comprises a high-voltage cable, a high-voltage output cable, a plurality of electromagnetic relays and a control cable mounting hole, the control cable penetrates through the control cable mounting hole to be electrically connected with a control coil of the electromagnetic relays, one end of the high-voltage cable is electrically connected with one end of a conduction switch of the electromagnetic relays, and the other end of the high-voltage cable is electrically connected with a discharge mechanism, and the other end of the electromagnetic relay conducting switch is electrically connected with one end of the high-voltage output cable, and the other end of the high-voltage output cable is provided with a wiring clamp.

2. The apparatus for detecting withstand voltage of mineral-insulated cable according to claim 1, wherein: the wiring mechanism includes that positive binding post of power, power negative binding post, instrument measurement positive binding post, instrument measurement negative binding post, high-pressure tail binding post and transformer shell ground terminal, and the positive binding post of power, power negative binding post, instrument measurement positive binding post, instrument measurement negative binding post, the one end of high-pressure tail binding post and transformer shell ground terminal all is equipped with the binding nut, carries out electric connection between the binding post that control board passes through cable and high-voltage testing transformer and corresponds.

3. The apparatus for detecting withstand voltage of mineral-insulated cable according to claim 1, wherein: the discharging mechanism is a silicon stack short-circuit rod which is fixedly installed on the top end face of the high-voltage test transformer, and a voltage-equalizing ball is arranged at the top of the silicon stack short-circuit rod.

4. The apparatus for detecting withstand voltage of mineral-insulated cable according to claim 1, wherein: the front end face of the control machine is provided with a data display screen, a start button and an emergency stop button.

5. The apparatus for detecting withstand voltage of mineral-insulated cable according to claim 1, wherein: the front end face of the conversion control box is a first box door, and the first box door is movably connected with the conversion control box through a hinge.

6. The apparatus for detecting withstand voltage of mineral-insulated cable according to claim 1, wherein: and an oil valve is arranged at the top of the high-voltage test transformer and communicated with the inside of the high-voltage test transformer.

7. The apparatus for detecting withstand voltage of mineral-insulated cable according to claim 1, wherein: the circuit conversion electronic box is internally provided with an installation sliding rail, and the electromagnetic relay is nested in the circuit conversion electronic box through the installation sliding rail.