CN215497922U

CN215497922U - Maintenance warning switch-off prohibition and closing device of explosion-proof mobile substation

Info

Publication number: CN215497922U
Application number: CN202121832442.4U
Authority: CN
Inventors: 彭光付; 胥林
Original assignee: Jiangsu Hasen Electric Co ltd
Current assignee: Jiangsu Hasen Electric Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-01-11
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a maintenance warning switch-off and switch-on device of a flameproof mobile substation, which is safer to use, and comprises the following components: the high-voltage power grid protection system comprises a dry type transformer, a high-voltage vacuum switch arranged on one side of the dry type transformer and a low-voltage protection box arranged on the other side of the dry type transformer, wherein a low-voltage power grid protector is arranged in the low-voltage protection box, a high-voltage power grid protector and a vacuum circuit breaker are arranged in the high-voltage vacuum switch, an H0, an H1 switching-on loop, an A0 loop and an A1 loop are connected to the vacuum circuit breaker, an I0.6 loop and a COM loop are connected to the high-voltage power grid protector, a contact Q1 is arranged on the I0.6 loop and the COM loop, a contact K1 is arranged on the A0 loop and the A1 loop, a contact Q0 is arranged on the H0 loop and the H1 switching-on loop, and the contact Q0 and the contact Q1 are arranged in the high-voltage power grid protector.

Description

Maintenance warning switch-off prohibition and closing device of explosion-proof mobile substation

Technical Field

The utility model relates to an explosion-proof mobile substation, in particular to a maintenance warning switch-on prohibition device for the explosion-proof mobile substation.

Background

When a coal mine underground maintenance worker maintains the rear-stage equipment of the explosion-proof mobile substation, the coal mine underground maintenance worker generally requires that a warning board is hung on power supply equipment so as to prevent other workers from transmitting power by mistake. However, some accidents always occur, which cause power transmission errors and safety accidents, and the higher requirements of safety production cannot be well met.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the maintenance warning switch-on prohibition device of the flameproof mobile substation is safer to use.

In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a maintenance warning of flame-proof type mobile substation forbids closing device, includes: the low-voltage protection box is internally provided with a low-voltage power grid protector, the high-voltage vacuum switch is internally provided with a high-voltage power grid protector and a vacuum circuit breaker, the vacuum circuit breaker is connected with an H0, an H1 closing loop, an A0 and an A1 loop, the high-voltage power grid protector is connected with an I0.6 and COM loop, the I0.6 and COM loop is provided with a contact Q1, the A0 and A1 loops are provided with a contact K1, the H0 and H1 closing loop is provided with a contact Q0, the contact Q0 and the contact Q1 are arranged in the high-voltage power grid protector, the H1 loop between the contact Q0 and the vacuum circuit breaker is provided with a contact K2 and a closing button SB1 for controlling the contact K2, and a closing button SB1 is pressed, the contact K2 is closed, the closing button SB1 is bounced, the contact K2 is opened, a contact K0 and a maintenance button SB0 for controlling the contact K0 and the contact K1 are arranged on an H0 closing circuit between the contact Q0 and the vacuum circuit breaker, the maintenance button SB0 is pressed, the contact K0 is opened while the contact K1 is closed, the maintenance button SB0 is bounced, the contact K0 is closed while the contact K1 is opened.

The utility model has the advantages that: above-mentioned maintenance warning of flame-proof type mobile substation closes closing device forbidden, increase a maintenance button on equipment, press this button after, equipment gets into the lock-out state, even press the closing button, equipment can not close a floodgate yet, can show warning suggestion at present and be the lock-out state on the screen, and suggestion equipment overhauls, forbid the power transmission warning, at this moment even also can not close a floodgate or maintain the unexpected bounce of button because the closing button is pressed to the maloperation, also need pass through the password unblock, just can get into normal condition, press the closing button and just can close a floodgate the circular telegram, ensure maintenance process's absolute safety.

Drawings

Fig. 1 is a schematic diagram of a maintenance warning switch-off device of an explosion-proof mobile substation.

Detailed Description

The details of the present invention are described below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a maintenance warning switching-on forbidding device of flame-proof type mobile substation includes: the low-voltage protection box is internally provided with a low-voltage power grid protector, the high-voltage vacuum switch is internally provided with a high-voltage power grid protector and a vacuum circuit breaker, the vacuum circuit breaker is connected with an H0, an H1 closing loop, an A0 and an A1 loop, the high-voltage power grid protector is connected with an I0.6 and COM loop, the I0.6 and COM loop is provided with a contact Q1, the A0 and A1 loops are provided with a contact K1, the H0 and H1 closing loop is provided with a contact Q0, the contact Q0 and the contact Q1 are arranged in the high-voltage power grid protector, the H1 loop between the contact Q0 and the vacuum circuit breaker is provided with a contact K2 and a closing button SB1 for controlling the contact K2, and a closing button SB1 is pressed, the contact K2 is closed, the closing button SB1 is bounced, the contact K2 is opened, a contact K0 and a maintenance button SB0 for controlling the contact K0 and the contact K1 are arranged on an H0 closing circuit between the contact Q0 and the vacuum circuit breaker, the maintenance button SB0 is pressed, the contact K0 is opened while the contact K1 is closed, the maintenance button SB0 is bounced, the contact K0 is closed while the contact K1 is opened.

When the maintenance warning switch-off and switch-on device of the flameproof mobile substation is used, the high-voltage power grid protector is electrified and in a fault-free state, the contact Q1 and the contact K1 are disconnected, the contact Q0 is closed, the maintenance button SB0 is in a bounce state, the contact K0 is closed, the switch-on button SB1 is pressed to close the contact K2, namely, the H0 and H1 switch-on loops are closed, and the switch-on operation is completed.

When maintenance personnel need to maintain the rear-stage equipment of the flameproof mobile substation, a maintenance button SB0 is pressed, namely a contact K0 is disconnected, a contact K1 is closed, a closing loop of H0 and H1 is disconnected, meanwhile, an I0.6 loop and a COM loop are closed, the high-voltage power grid protector can display a warning on a screen to prompt that the high-voltage power grid protector is in a locking state at present and prompt equipment maintenance, and power transmission warning is forbidden, at this time, even if the closing button SB1 is pressed due to misoperation and cannot be closed or the maintenance button SB0 is accidentally bounced, the high-voltage power grid protector needs to be unlocked through a password, the high-voltage power grid protector can be disconnected from the contact Q1 and close the contact Q0, so that the high-voltage power grid protector enters a normal state, the closing button SB1 can be pressed to be closed and electrified, and absolute safety of the maintenance process is ensured.

Claims

1. The utility model provides a maintenance warning of flame-proof type mobile substation forbids closing device, includes: the dry-type transformer, set up the high-pressure vacuum switch on one side of the dry-type transformer and set up the low-voltage protection case on the other side of the dry-type transformer be provided with the low-voltage electric network protector in the low-voltage protection case be provided with high-voltage electric network protector and vacuum circuit breaker in the high-pressure vacuum switch, its characterized in that: the vacuum circuit breaker is connected with an H0 and H1 closing circuit and an A0 and A1 circuit, the high-voltage power grid protector is connected with an I0.6 and COM circuit, the I0.6 and COM circuit is provided with a contact Q1, the A1 and A1 circuits are provided with a contact K1, the H1 and H1 closing circuit is provided with a contact Q1, the contact Q1 and the contact Q1 are arranged in the high-voltage power grid protector, the H1 closing circuit between the contact Q1 and the vacuum circuit breaker is provided with a contact K1 and a closing button SB1 for controlling the contact K1, the closing button SB1 is pressed, the contact K1 is closed, the SB1 is bounced and the contact K1 is opened, the H1 closing circuit between the contact Q1 and the vacuum circuit breaker is provided with the contact K1 and a maintenance button SB1 for controlling the contacts K1 and SB1, the SB1 is pressed, the SB1 is bounced button is pressed, the SB1 is also is opened, the SB1 is also is pressed, contact K0 is closed while contact K1 is open.