Automatic gas discharge apparatus
An automatic discharge and gas technology, applied in the direction of gas discharge, safety devices, mining devices, etc., can solve the problems of no gas accumulation detection and discharge, etc., and achieve the effects of sensitive control action, convenient use, safe production and reliability
Inactive Publication Date: 2011-01-26
张正龙
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Problems solved by technology
At present, there is no product specifically designed to detect and discharge the gas accumulated in the recess of the working face
Method used
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[0021] The technical solution will be described in detail below with examples.
[0022] Referring to FIG. 1 , the automatic gas discharge device of the present invention includes a gas detection circuit 1 , an analog-to-digital conversion circuit 2 , a counting display circuit 3 , a control circuit 5 , a digital compression circuit 4 , a power supply 8 and an explosion-proof motor 9 .
[0023] The composition and working process of the main circuit of the automatic gas discharge device of the present invention will be described below.
[0024] Referring to Fig. 2, in the embodiment of the automatic gas discharge device of the present invention, the gas detection circuit 1 adopts the model as the MTC4 / 3.0L thermocatalytic gas sensor as the gas sensor, consisting of the gas sensor LR1, LR2, resistors R46, R44, The adjustable resistor RW4 and the amplifier IC17-1 together form a gas inspection bridge. Transistors T21 and T22 form a constant current circuit to provide working cur...
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The invention relates to a gas automatic draining device, which comprises a power supply, an explosion prevention motor, a gas detecting circuit, a modulus change circuit, a digital compression circuit, a control circuit and a counting and displaying circuit, wherein detecting signals collected by the gas detecting circuit are sequentially connected to the modulus change circuit, the counting anddisplaying circuit and the control circuit; the counting and displaying circuit is connected with the control circuit which is connected with the explosion prevention motor; and the digital compression circuit is connected between the modulus change circuit and the counting and displaying circuit. The gas automatic draining device has the advantages that due to the adoption of a gas sensor and anautomatic control circuit which belong to thermocatalytic air-sensitive elements, when 'upper complementary angle' gas content is more than the draining concentration, the gas automatic draining device displays the concentration and alarms, and makes a gas draining motor start working; and when the 'upper complementary angle' gas content is less than the draining concentration, the gas automatic draining device automatically stops working. When the gas automatic draining device is used on the spot, the gas automatic draining device has the advantages of sensitive control action, convenient use and reliable performance, and provides reliable guarantee for the safe production of coal mines.
Description
technical field [0001] The invention relates to a control and alarm device, in particular to a gas automatic discharge device. Background technique [0002] With the development of underground production in coal mines, the output of coal mines has increased significantly. During underground coal mining in coal mines, there will be some places above the coal wall of the coal mining face that cannot be blown by fresh air (commonly known as "upper corner"). The gas stored in the coal is released at the same time, and part of it is carried by the air Some of them will be trapped in the recess of the working face, and gas accumulation will occur. When the concentration reaches a certain level, it will easily cause a gas explosion, which will endanger the lives of miners and bring disasters to the mine, threatening the safety of workers at any time. life safety. Therefore, solving the gas accumulation in the recesses of the working face underground in coal mines has become a maj...
Claims
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IPC IPC(8): E21F7/00E21F17/18
Inventor 郭海李兴王洪庆王振山陈轶平周云露杨旺晋海云段卫杨日升
Owner 张正龙