CN2358332Y

CN2358332Y - High reliable explosion-proof miners lamp for detecting gas

Info

Publication number: CN2358332Y
Application number: CN 97249019
Authority: CN
Inventors: 张连杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-09
Filing date: 1997-12-09
Publication date: 2000-01-12
Anticipated expiration: 2007-12-09

Abstract

The utility model relates to a high reliable explosion-proof miner lamp for detecting gas. In a general lamp for detecting gas, a detecting element is arranged in a battery box or the appearance is additionally provided with fittings, so the sensitivity is low, the initiation reaction temperature is high, and the general lamp for detecting gas is used in explosion limit and is dangerous. The utility model overcomes the problems. Both the vigilance warning and the overrun warning of the utility model adopt contactless low pulse triggering of a thyristor, and the normal illumination power is not consumed. The utility model has the advantages that a bulb of a miner lamp adopts a double wire light change bulb, the bulb is automatically converted into connection in series strobe light to ensure the reliable performance and the service life when gas overruns. The original facilities do not need changing when the utility model is produced, the increased cost is low, and the practical effectiveness is high. The utility model is especially suitable for the exploitation of high gas coal mining.

Description

A kind of highly reliable blast protection miners lamp

The utility model relates to colliery illumination and gas safety monitoring field, is applicable to the highly gassy mine production operation of gas and coal dust outburst danger.

At present the pre-anti-gas explosion of Coal Production is all had many more advanced monitoring detecting instruments both at home and abroad, but startling explosion accident happens occasionally still, main cause illustrates that existing various gas alarming watch-dog also exists certain problem.

The purpose of this utility model is to provide a kind of dependable performance component low in energy consumption few easy to install, and a kind of highly reliable blast protection miners lamp that can use safely in the gas explosion limit range.

The technical solution of the utility model is: the detecting element (1) that is contained in the lamp holder position adopts the carrier catalyst element of little thin tape temperature control contact, and its highest detection temperature is controlled in 400 degree; Signal relatively amplifying circuit board (2) is contained in the lamp holder, and all use the rubber ring fixing seal because transmission range is short, and remolding sensitivity is higher, monitoring executive component plate (4), it is interior to alleviate lamp holder weight to be contained in storage battery (5) lamp lid, and 6 is that two-filament bulb 7 is for detecting air admission hole among Fig. 1.

Below in conjunction with the embodiment of the invention, see that Figure of description 2 specifies its operation principle, the translation function of gas and electric signal is by meagre type BAJ series methane gas detecting element r among Fig. 2 ₁r ₂With temperature control element R _JThe resistance bridge of forming is realized, its internal resistance changes with corresponding variation of gas density size when tested gas reaches warning line 1% concentration, this variation is by after the voltage signal reaction, passes to be assembled in the lamp holder relatively amplifying unit (2) and to amplify comparison process and (can pass through R once reach the warning voltage of setting ₂R ₃Setting) NE555 bipolar time-base circuits 2 pin pass through R ₃Ground connection is low level, and with NE555 set, 3 of its output pins are high level, relay J adhesive, J in the mine lamp loop ₁Normally-closed contact is opened, simultaneously J ₂The normally opened contact closure, intermittently alarm unit is devoted oneself to work, and its course of work is as follows.J ₂Closed mine lamp power passes through R _K, coil T is to capacitor C _KC is worked as in charging _KWhen last institute charging voltage was raised to neon bulb N starting voltage, so the moment conducting of build-up of luminance current trigger IGCT was C _KBy coil T discharge, discharge finishes C again _KCharging conversely again, so constantly to forward and reverse charging/discharging voltage that intermittently changes of brilliant pipe, IGCT is constantly sought led to and end, mine lamp will send the light of intermittently reporting to the police, with warning with stop the people must not operation by force when the light warning, its luminous chopper frequency can be adjusted R _KWith C _KSolve, the holding function that transfinites is by the temperature resistance relay R _JSolve R when reaching the temperature control limit _JIt is safe in utilization to guarantee to open the detecting element power supply that stops in being exposed to tested gas.

If gas density is reduced to below the dangerous values, be contained in also corresponding the changing of its output level of detecting element in the lamp holder, make ambipolar time-base integrated circuit 6 pin pass through R ₂Dividing potential drop is higher than 2/3 supply voltage, and the upset of NE5553 pin is low level, and relay discharges, mine lamp loop J ₁Closure, alarm circuit J ₂Open, make it recover operate as normal.The string of its mariages and function are realized by another group contact of relay.

In sum, the utility model has concisely been introduced a kind of enforcement overall process of highly reliable blast protection miners lamp, and electronic component of the present invention and line design are fairly simple reliable, can produce qualified products according to above-mentioned requirements.

Claims

1. highly reliable its architectural feature of blast protection miners lamp is that detecting element (1) and signal comparison magnification circuit plate (2) are fixed in the lamp head shell (3), and monitoring is carried out and mu balanced circuit plate (4) is fixed in storage battery box (5) loam cake.The outside does not increase any element;

2. highly reliable its technical characterictic of blast protection miners lamp is the carrier catalyst element that gas inspection element adopts meagre type and has temperature control to protect, and is shockproof with the rubber ring fixing seal;

3. be that according to described a kind of highly reliable its technical characterictic of blast protection miners lamp of claim 2 warning is reported to the police and overload alarm all adopts the contactless circuit of IGCT, not power consumption during the mine lamp operate as normal;

4. be that according to said a kind of highly reliable its technical characterictic of blast protection miners lamp of claim 2 mine lamp adopts the mariages high-low lamp.