Lagged type sensor for breaking when cover opening

A technology of opening the cover and power off, sensor, applied in circuits, electrical switches, electrical components, etc., can solve the problems of complex structure, can not be used for equipment modification, etc., to ensure production safety, facilitate on-site installation and use, and avoid violations or misoperations Effect

Active Publication Date: 2009-02-04
SHANXI QUANAN NEW TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This mechanism realizes that when the cover of the wiring cavity is opened, the power supply system of the upper level is automatically cut off, which ensures the safety of the maintenance personnel, but its structure is relatively complicated, and it can only be produced by the manufacturer, and cannot be used for modification of the equipment that has been put into operation

Method used

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  • Lagged type sensor for breaking when cover opening
  • Lagged type sensor for breaking when cover opening

Examples

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Embodiment Construction

[0013] Figure 1, figure 2 The hysteresis-type cover-opening power-off sensor shown includes electrical components such as a disconnector GL, a leakage protector LD, a leakage relay LJ, a contactor CJ, and a junction box 11; The sensor AJ and the contact of the sensor button switch CK are connected to one end of the blocking resistor Rb, the other end of the blocking resistor Rb is connected to a certain phase on the power supply side of the isolation switch GL2, and the other end of the sensor button switch CK contact is grounded.

[0014] The sensor AJ is composed of a casing 5 , a button switch CK encapsulated in the casing 5 , a spring 6 , and a sensor rod 4 . The top of the sensor rod 4 is in contact with the upper cover 3 of the junction box 11 , and the bottom of the sensor rod 4 is equipped with a spring 6 . Components such as button switches can be replaced by touch switches, photoelectric and other non-contact switches.

[0015] The ground wire post 7 is connected t...

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PUM

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Abstract

Disclosed is a lagged electric sensor which powers off upon the opening of the cover. The lagged electric sensor comprises an isolating switch GL, a leakage protector LD, a leakage relay LJ, a contactor CJ, a junction box 11, etc. A sensor AJ is installed on a ground pole7inside the junction box 11. The contact of a press buttonswitch of the sensor is connected at one end of a block resistor Rb, and the other end of the block resistor Rb is connected to one phase on the power supply side of an isolating switch GL2. The other end of the contact of the press buttonswitch of the sensor is grounded. The lagged electric sensor is simple in structure and is safe and reliable to use and can effectively avoid the dangers caused by the misoperation or violative operation of the operator when examining and repairing the equipment. The lagged electric sensor also has the function of blocking upon the opening of the cover, thus guaranteeing safety during production. The lagged electric sensor can not only be applied on current equipment but also be applied on new equipment.

Description

technical field [0001] The invention belongs to electrical equipment, in particular to a hysteresis-type cover opening and power-off sensor. Background technique [0002] At present, mine explosion-proof vacuum electromagnetic starter is the main electrical equipment used in underground coal mines and places with flammable and explosive materials. The explosion-proof vacuum electromagnetic starter for mine is composed of explosion-proof casing, isolating switch, contactor, control transformer, relay, protection components and other electrical components, which are used to control the start and stop of the motor, and protect against overload, leakage, short circuit and voltage loss. For protection, the explosion-proof shell is the core component of the equipment to prevent explosion and ensure safety. When the above-mentioned equipment is being maintained, the requirements of the "Coal Mine Safety Regulations" must be strictly followed, and the power supply must be cut off b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/16H01H9/22
Inventor 郭春平
Owner SHANXI QUANAN NEW TECH DEV CO LTD
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