CN201671658U - Coal gas explosion early warning device - Google Patents

Coal gas explosion early warning device Download PDF

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Publication number
CN201671658U
CN201671658U CN2010201959893U CN201020195989U CN201671658U CN 201671658 U CN201671658 U CN 201671658U CN 2010201959893 U CN2010201959893 U CN 2010201959893U CN 201020195989 U CN201020195989 U CN 201020195989U CN 201671658 U CN201671658 U CN 201671658U
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China
Prior art keywords
early warning
cylinder
spring
warning device
piston
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Expired - Lifetime
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CN2010201959893U
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Chinese (zh)
Inventor
张信耀
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Individual
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Individual
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Priority to CN2010201959893U priority Critical patent/CN201671658U/en
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Publication of CN201671658U publication Critical patent/CN201671658U/en
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Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a coal gas explosion early warning device, which is characterized in that a power source, a speed reduction transmission mechanism, a miniature single gasoline internal-combustion engine cylinder with an ignition mechanism and an air inlet and exhaust mechanism and an early warning mechanism are mounted in a sealing box, a piston rod of the single gasoline internal-combustion engine cylinder is connected with the speed reduction transmission mechanism through a crank shaft, and a spring contact switch of the early warning mechanism is disposed on the cylinder inner wall at the rear of a piston of the miniature single gasoline internal-combustion engine cylinder. The miniature single gasoline internal-combustion engine cylinder is arranged on a plurality of spring steel plates which are fixed on a fixed seat. If gas absorbed into the cylinder achieves explosion concentration after being compressed, explosion is caused after a spark plug is ignited. As the piston is retracted during explosion, simultaneously the cylinder shocks back and forth violently along with swinging of the spring steel plate so that the piston impacts the spring contact switch to send warning signals, thereby detecting concentration of gas outside the device. The coal gas explosion early warning device is easy in manufacturing and reliable in detection.

Description

Gas explosion early warning device for coal mine
Technical field
The utility model relates to a kind of utensil that can predict and prevent coal mine gas from explosion.Specifically a kind of gas explosion early warning device for coal mine.
Background technology
It is more that accident of mine disaster takes place in the colliery.Accident of mine disaster brings tremendous loss can for the country and people's lives and properties, and the life safety to the miner causes a significant threat especially.The accident proportion that causes owing to coal mine gas from explosion in the accident of mine disaster is for maximum.People look forward to the method and apparatus of seeking a kind of scientific and reasonable pre-preventing coal mine gas from explosion always for a long time, but owing to the reason that causes coal mine gas from explosion is numerous, situation is intricate, at present also there is not good especially method and apparatus to forecast coal mine gas from explosion, to avoid the generation of coal mine gas from explosion accident of mine disaster to greatest extent.
Summary of the invention
The purpose of the utility model is that to disclose a kind of making easy, simple in structure, detect reliable gas explosion early warning device for coal mine to society.
The technical solution of the utility model is achieved in that
A kind of gas explosion early warning device for coal mine, it is characterized in that, install a power source in the stuffing box, reduction gearing mechanism, the miniature single cylinder gasoline engine cylinder of a band ignition mechanism and air inlet, exhaust gear, one early warning and alarming mechanism, the piston rod of described single cylinder gasoline engine cylinder is connected with reduction gearing mechanism by bent axle, and the cylinder inner wall at the piston rear portion of described miniature single cylinder gasoline engine is provided with the spring contact switch of an early warning and alarming mechanism; Described miniature single cylinder gasoline engine cylinder is arranged on the several piece steel spring plate, and this several piece steel spring plate is fixed on the holder.
The fixed-site of described single cylinder gasoline engine cylinder is on the adjustable described holder of front and back position; The fixed-site of described power source and reduction gearing mechanism is on another holder of fixed-site.
Described power source is a micromotor.
Described reduction gearing mechanism is reducer and the bent axle that is connected with micromotor.
Described early warning and alarming mechanism comprises warning power supply, alarm, connection lead and described spring contact switch.
Described spring contact switch comprises: be fixed on the spring on the cylinder inner wall at piston rear portion, be connected described spring central authorities, an end is fixed on described spring front end, the other end stretches out the spring shaft contact pin and the power switch contact of the rear end of described spring.
The utility model has the advantages that:
Micromotor, reduction gearing mechanism, single cylinder gasoline engine cylinder, early warning and alarming mechanism etc. all belong to prior art, but the utility model utilizes the reasonable combination of prior art, has both made production easy, make combination back new product effect obvious again.
Use mature technique fully, the coal mine gas that concentration is lower is implemented the preset proportion compression by the gasoline engine piston, increase gas density and in single cylinder gasoline engine cylinder with the plug ignition of ignition mechanism, reach testing goal whether to set off an explosion.And reach to set at coal mine gas and send early-warning and predicting when concentration is blasted in cylinder.Therefore, detect, early-warning and predicting is more reliable.
Description of drawings
Fig. 1 is that the miniature single cylinder gasoline engine cylinder of the utility model embodiment is finished position of piston schematic diagram when air-breathing;
Fig. 2 is the miniature single cylinder gasoline engine cylinder of the utility model embodiment position of piston schematic diagram when finishing exhaust;
Fig. 3 is that three steel spring plates of the utility model embodiment are installed in schematic diagram on the adjustable holder of front and back position;
Fig. 4 is the spring contact construction of switch schematic diagram of the utility model embodiment.
The specific embodiment
The title of each Reference numeral is in the utility model accompanying drawing:
Stuffing box 1, micromotor 2, reducer 3, bent axle 4, piston rod 5, piston 6, miniature single cylinder gasoline engine cylinder 7, inlet valve 8, early warning and alarming mechanism 9, warning power supply 91, alarm 92, connection lead 93, spring contact switch 94, power switch contact 941, spring 942, spring shaft contact pin 943, holder 10, sliding tray 101, another holder 11, steel spring plate 12.
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1 and Figure 2: a kind of gas explosion early warning device for coal mine, it is characterized in that, be installed on power source in the stuffing box 1, reduction gearing mechanism, the miniature single cylinder gasoline engine cylinder 7 of a band ignition mechanism and air inlet, exhaust gear, one early warning and alarming mechanism, the piston rod 5 of described single cylinder gasoline engine cylinder is connected with reduction gearing mechanism by bent axle 4, and the cylinder inner wall at piston 6 rear portions of described miniature single cylinder gasoline engine is provided with the spring contact switch 94 of an early warning and alarming mechanism.Described miniature single cylinder gasoline engine cylinder 7 is arranged on three steel spring plates 12, and these three steel spring plates 12 are fixed on the holder 10.
The fixed-site of single cylinder gasoline engine cylinder 7 is on the adjustable described holder 10 of front and back position; The fixed-site of described power source and reduction gearing mechanism is on another holder 11 of fixed-site;
Power source is a micromotor 2.
Reduction gearing mechanism is reducer 3 and the bent axle 4 that is connected with micromotor 2.
Early warning and alarming mechanism 9 comprises warning power supply 91, alarm 92, connects lead 93 and described spring contact switch 94.
Spring contact switch 94 comprises: be fixed on the spring 942 on the cylinder inner wall at piston 6 rear portions, be connected described spring 942 central authorities, an end and be fixed on the front end of described spring 942, the other end stretches out the spring shaft contact pin 943 and the power switch contact 941 of the rear end of described spring 942.
This device is a power with micromotor 2, drive piston 6 motions of miniature single cylinder gasoline engine cylinder 7 by reduction gearing mechanism, through air-breathing, compression, igniting, four processes of exhaust, if the gas that sucks outside installing is implemented to reach explosion ratio after the compression, in spark plug (prior art is not drawn among the figure) ignition procedure of ignition mechanism, promptly can set off an explosion.Because explosion time, contract behind the piston 6, while cylinder 7 fierce pitching under the swing of steel spring plate 12 (Fig. 3), original piston 6 can not strike the spring contact switch 94 of the early warning and alarming mechanism on the cylinder inner wall that is arranged on piston 6 rear portions when withdrawing, and struck spring contact switch 94 (Fig. 4) now, spring contact switch 94 is opened, and early warning and alarming mechanism sends alarm signal.
In manufacturing process, it is fixed that the degree of depth that piston slides in cylinder will be come by the various situation requirements that detect.Therefore, how much concentration cylinder design specifications and installation site will increase outward and promptly reach and send early-warning and predicting to the operator on duty and decide because of being compressed to ratio device by being sucked into gas.Promptly can set off an explosion if coal mine gas concentration reaches 5%, plunger designs is compressed to 1/2nd volume and blasts for sucking coal mine gas in the cylinder, exploded promptly illustrate device outward gas density reached 2.5%.If plunger designs is compressed to 4/5ths volume and blasts for sucking coal mine gas in the cylinder, exploded promptly illustrate device outward gas density reached 4%, and this concentration is very approaching from gas explosion.Also can be designed to the form of 1 grade, 2 grades, 3 grades early warning alarm.
In order to improve the early warning precision of prior-warning device, establish sliding tray 101 on the holder 10 simultaneously, the fixed mount front and back position of holder 10 can be regulated.
In addition, establishing stuffing box 1 is in order to guarantee safety and noise reduction.Early warning and alarming mechanism 9 should warning power supply safe in utilization, as dry cell, alarm if the exhaust opening that adopts electric bell and stack all should from stuffing box 1 far away also should consider.

Claims (6)

1. gas explosion early warning device for coal mine, it is characterized in that, stuffing box is installed on power source in (1), reduction gearing mechanism, the miniature single cylinder gasoline engine cylinder (7) of a band ignition mechanism and air inlet, exhaust gear, one early warning and alarming mechanism, the piston rod (5) of described single cylinder gasoline engine cylinder is connected with reduction gearing mechanism by bent axle (4), and the cylinder inner wall at the piston of described miniature single cylinder gasoline engine (6) rear portion is provided with the spring contact switch (94) of an early warning and alarming mechanism; Described miniature single cylinder gasoline engine cylinder (7) is arranged on the several piece steel spring plate (12), and this several piece steel spring plate (12) is fixed on the holder (10).
2. gas explosion early warning device for coal mine according to claim 1 is characterized in that, the fixed-site of described single cylinder gasoline engine cylinder (7) is on the adjustable described holder of front and back position (10); The fixed-site of described power source and reduction gearing mechanism is on another holder (11) of fixed-site.
3. gas explosion early warning device for coal mine according to claim 1 and 2 is characterized in that, described power source is micromotor (2).
4. gas explosion early warning device for coal mine according to claim 3 is characterized in that, described reduction gearing mechanism is reducer (3) and the bent axle (4) that is connected with micromotor (2).
5. gas explosion early warning device for coal mine according to claim 4 is characterized in that, described early warning and alarming mechanism (9) comprises warning power supply (91), alarm (92), connects lead (93) and described spring contact switch (94).
6. gas explosion early warning device for coal mine according to claim 5, it is characterized in that, described spring contact switch (94) comprising: be fixed on the spring (942) on the cylinder inner wall at piston (6) rear portion, be connected the front end that described spring (942) is central, an end is fixed on described spring (942), the other end stretches out spring shaft contact pin (943) and power switch contact (941) of the rear end of described spring (942).
CN2010201959893U 2010-05-17 2010-05-17 Coal gas explosion early warning device Expired - Lifetime CN201671658U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201959893U CN201671658U (en) 2010-05-17 2010-05-17 Coal gas explosion early warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201959893U CN201671658U (en) 2010-05-17 2010-05-17 Coal gas explosion early warning device

Publications (1)

Publication Number Publication Date
CN201671658U true CN201671658U (en) 2010-12-15

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CN2010201959893U Expired - Lifetime CN201671658U (en) 2010-05-17 2010-05-17 Coal gas explosion early warning device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101839145A (en) * 2010-05-17 2010-09-22 张信耀 Gas explosion early warning device for coal mine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101839145A (en) * 2010-05-17 2010-09-22 张信耀 Gas explosion early warning device for coal mine
CN101839145B (en) * 2010-05-17 2011-11-02 张信耀 Gas explosion early warning device for coal mine

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20101215

Effective date of abandoning: 20111102