Method and device for cover opening and locking in gas exceeding limit
A locking device and gas technology, applied in mining devices, safety devices, building locks, etc., can solve problems such as inability to open the cover for maintenance by staff, gas explosion, etc., to prevent gas explosion, ensure safe production, and ensure the safety of staff Effect
Active Publication Date: 2012-04-25
SHANXI QUANAN NEW TECH DEV CO LTD
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Problems solved by technology
However, due to the lack of technical equipment guarantee, gas explosion accidents caused by illegal live operation occurred from time to time
In order to solve this problem, the Chinese patent application number is: 00264154.2 discloses a safety lock, 200620024380.3 discloses a safety lock, 200810079442.4 discloses a hysteresis type cover-opening power-off sensor and 200810055240.6 discloses a method and its Devices, etc., there have been several solutions, but none of them can effectively prevent the staff from opening the cover for maintenance when the gas in the coal mine exceeds the limit, which may still cause a gas explosion
Method used
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Embodiment Construction
[0021] The implementation of the present invention will be further described below in conjunction with the accompanying drawings.
[0022] Such as figure 1 Shown, is the gas overrun cap opening locking device 99, which is relatively installed on the electromechanical equipment cover plate 116 to lock the fastening bolt 107, or each bolt can be locked with a cap opening locking device.
[0023] Such as figure 2 As shown, the gas overrun opening and closing device includes a lock case (bolt cover with lock) 102, a locking object (fastening bolt) 107, a manual reset electric mechanism 104 installed in the lock case (bolt cover with lock) 102, a signal The processing module 110, and the monitoring probe 113 and the sound and light alarm 114 installed on the lock housing (bolt cover with lock) 102; Connection, the signal processing module 104 is connected with the monitoring probe 113 and the alarm 114 . The monitoring probe is a gas monitoring probe, and may also be an analog ...
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The invention relates to a method and a device for cover opening and locking when gas exceeds the limit and a locking object is locked by a lock shell. The method is characterized by comprising the following steps: receiving a gas density detection signal in the ambient environment by a monitoring probe; transmitting the detection signal to a signal processing module; due to the signal processingof the signal processing module, if the gas density in the ambient environment exceeds the limit, sending a sounding and light alarm and power-off signal, controlling the action of an electric mechanism by the signal processing module, making a locking head of the electric mechanism to be extended, keeping the locking object in an automatic locking state so as not to open an electric cover plate,and realizing the cover opening and locking when gas exceeds the limit. By the device, when gas and coal dust in high-risk places such as coal mines and the like in which gas and coal dust are easilyaccumulated are over the limit, nobody can open the wiring cover plate of the electric equipment for live line operation, so that the gas explosion due to the live line operation can be effectively prevented by the technical means.
Description
Technical field: [0001] The invention belongs to the technical field of underground safety in coal mines, and specifically relates to a device for preventing the opening of the wiring cover of electrical equipment when the gas exceeds the limit, and at the same time prevents the over-limit opening of the fastening bolts when the concentration of other flammable and explosive gases and liquids exceeds the limit. Cover locking method and device. technical background: [0002] Coal mine underground is a high-risk place where gas and coal dust accumulate. If the electrical equipment in the mine is repaired with electricity, the electric spark generated will easily cause an explosion accident when the gas concentration and coal dust concentration are at the explosion point. Article 445 of the "Coal Mine Safety Regulations" requires: "It is not allowed to overhaul or relocate electrical equipment, cables and wires underground. Before overhauling or relocation, the power supply mus...
Claims
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IPC IPC(8): E05B45/06E21F17/18E21F5/00
Inventor 郭春平
Owner SHANXI QUANAN NEW TECH DEV CO LTD