Detection device and method for protruding gas pressure decay
A detection device and gas pressure technology, which is applied in the direction of elastic deformation gauge fluid pressure measurement, etc., can solve the problems of short time, fast decay rate of gas pressure, and inability to realize monitoring, etc., and achieve the effect of reducing the impact
Inactive Publication Date: 2020-03-13
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
The outburst process has the characteristics of short time, fast gas pressure decay rate, high strength, and great destructiveness, so monitoring cannot be realized at the outburst site
The behaviors of different outburst intensities cause different disasters to mines, and the inability to obtain the corresponding experimental data of the outburst site has brought great difficulties to the study of gas outburst
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[0025] The present invention is described in detail below in conjunction with accompanying drawing and embodiment:
[0026] A detection device for prominent gas pressure decay, see appendix figure 1 to attach Figure 5 , in the figure: pressure reducing valve 1, pressure tank 2, electric contact pressure gauge 3, solenoid valve 4, PID regulating ball valve 5, pneumatic ball valve 6, pressure transmitter 7, main tank body 8, high frequency pressure transmitter 9 , blasting diaphragm 10, diversion tube 11, salient wave receiving device 12, protruding wave receiving diaphragm 1201, insulating ring 1202, noise reduction device 13, sound wave cushion 1301, silencer 1302, sound reduction tube wall 1303, high-frequency data acquisition instrument 14 , monitoring host 15 , host computer 16 , signal transmission module 17 , and trolley 18 .
[0027] In this embodiment, the pressure tank 2 is connected to the main tank body 8, and the connecting pipeline between the pressure tank 2 an...
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The present invention relates to the gas detecting and monitoring field in the construction of coal mine shafts, and more particularly to a detection device and detection method for protruded gas pressure attenuation. A pressure tank is connected with a main tank body; the connection pipeline between the pressure tank and the main tank body is provided with a pneumatic ball valve and a PID regulating ball valve; one end of the main tank body is provided with a flow guidance pipe; the connection part between the main tank body and the flow guidance pipe is provided with a blasting film; and one end of the flow guidance pipe extending into a silencing device is provided with a protruded wave receiving diaphragm. Compared with the prior art, the protruded wave receiving device responds quickly to the protruded waves and then controls the pneumatic ball valve to be turned off instantly so as to ensure that the pressure of incoming gas does not exert influence on the pressure of the main tank body during an explosion. Through the use of the PID control valve to control the pressure of the main tank body, when the pressure of the main tank body mounts, the flow amount of incoming gas diminishes; and during an explosion, the flow amount of incoming gas is already small enough to ensure that the pressure inside the main tank body is not influenced by the pressure of incoming gas. The silencing device reduces the noise of protruded waves and the influence of vibrations on an instrument performing measurement.
Description
technical field [0001] The invention relates to the field of gas detection and monitoring in the construction process of a coal mine shaft, in particular to a detection device and a detection method for protruding gas pressure attenuation. Background technique [0002] The patent of the invention relates to the field of gas outburst pressure attenuation monitoring in coal mine shaft and roadway construction engineering. Specifically, it is a gas outburst pressure attenuation rate parameter detection method and detection device, which can be used to study the gas outburst process pressure during the excavation of coal mine shafts and roadways. Change and intensity analysis and protection plan formulation. Background technique [0003] Gas outburst refers to the phenomenon that a large amount of gas in coal seams and rock formations is suddenly injected into the mining space in a very short time during the underground production process of coal mines. The outburst process h...
Claims
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IPC IPC(8): G01L7/02
CPCG01L7/02
Inventor 朱令起王福生朱海军郭立稳甘德清董宪伟张九零张嘉勇刘聪杨帆邓毅
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY