Coal temperature monitoring experiment device and method based on double-source acoustic signal characteristics
A technology of signal characteristics and experimental devices, applied in measurement devices, thermometers with physical/chemical changes, thermometers, etc., can solve problems such as restricting the development of acoustic wave temperature measurement technology, achieve three-dimensional visualization, facilitate promotion and use, and increase measurement accuracy. Effect
Active Publication Date: 2022-03-01
XIAN UNIV OF SCI & TECH +1
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in practical applications, there are a large number of noise signals in the environment, and the combustion sound will be generated during the spontaneous combustion of coal. Development of sonic temperature measurement technology
The fundamental reason is that basic scientific issues such as the evolution law of combustion sound during the spontaneous combustion process of loose coal, the propagation mechanism of combustion sound and acoustic emission composite sound wave, and the temperature sensing mechanism have not yet been resolved.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0052] Such as Figure 1 to 3 As shown, the coal temperature monitoring experimental device based on dual source sound signal characteristics, including cubic coal sample box, cube-type coal sample box, provided filter 10, cube type coal sample box four The side wall is located in a portion where the filter 10 is provided with an electric heating wire 8, a screen 10, a cubic coal sample chamber and a four-sided electric heating wire 8, and a square cavity for placing the coal sample 1. The lower side wall of the type coal sample box is provided with intake pipe 9. The intake pipe 9 extends into the cube type coal sample box through the cubic coal sample case bottom plate and the filter 10, and the top of the cube-type coal sample is provided. To the ventilation pipe 20 in the cubic coal sample case, the air pipe 20 is connected from one end of the cubic coal sample box through the hose and the gas phase chromatograph, and the plurality of sentient sound wave transducers 11 pass thr...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a coal temperature monitoring experimental device and method based on double-source acoustic signal characteristics. The experimental device comprises a cubic coal sample box, a filter screen, an electric heating wire, a gas inlet pipe and a gas outlet pipe, the method comprises the following steps: 1, filling a coal sample and detecting the air tightness of a cubic coal sample box; 2, numbering the transmitting and receiving type acoustic wave transducers and carrying out block division on the coal sample; 3, setting a heating temperature threshold value of the coal sample and starting an electric heating wire and a gas chromatograph; 4, initializing a plurality of transmit-receive acoustic wave transducers; 5, judging whether the heating temperature of the coal sample reaches a heating temperature threshold value or not; 6, monitoring the coal temperature of the transceiving acoustic wave transducer in the first working mode; and 7, monitoring the coal temperature of the transceiving acoustic wave transducer in the second working mode. According to the invention, the whole process of generating, sounding, receiving and collecting external sound waves and combustion sound can be completed, the temperature of the coal sample is monitored in real time, three-dimensional visualization of the temperature of the coal sample is realized, and a temperature field in the coal spontaneous combustion process can be quickly and accurately reconstructed.
Description
Technical field [0001] The present invention belongs to the technical field of coal temperature monitoring experiment based on dual source acoustic signal characteristics, and details relates to coal temperature monitoring experiments and methods based on dual source sound signal characteristics. Background technique [0002] As an important substance foundation of my country's industrial development, coal has always occupied energy main status. Coal-seam spontaneous combustion fires are not only one of the main forms of mine disasters, but also the main causes of secondary disasters such as mine gas and coal dust explosions. Coal-fired cryptographic detection is the key to efficient prevention and control, but is limited to the spatial range of the vacuum area, poor coal rock body conductivity, loose coal-free high temperature area has concealed, mobility, etc., and limited space fire source detection technology Factors such as bottlenecks, exact detection and prevention and con...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12G01N30/06G01N30/30G01K11/24
CPCG01N31/12G01N30/06G01N30/30G01K11/24
Inventor 郭军郑学召金永飞蔡国斌王凯旋刘荫
Owner XIAN UNIV OF SCI & TECH