Experimental device for observing cold shock cracking coal body in whole process
An experimental device, cold shock technology, applied in the direction of measuring devices, fuel oil testing, material inspection products, etc., can solve the problems of insufficient technology, lack of observation instruments for coal energy, structural changes, etc., and achieve the effect of ensuring accuracy
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[0033] An experimental device for observing cold shock fracturing coal bodies in the whole process, such as figure 1 As shown, it includes coal sample storage system, liquid nitrogen injection system, liquid nitrogen cold impact system, ultrasonic acquisition and processing system and thermal imaging acquisition and processing system.
[0034] The coal sample storage system is composed of a constant temperature and humidity box 22 and a coal body 7 , and the coal body 7 is placed in the constant temperature and humidity box 22 . After the coal body 7 is prepared according to the required experimental conditions, the temperature and humidity of the constant temperature and humidity box 22 are set, and the coal body 7 is put in for standby. The coal body 7 is a cube of 70×70×70 mm.
[0035] Such as figure 1 As shown, the liquid nitrogen injection system consists of a self-pressurized liquid nitrogen tank 1, a valve 2, a pressure gauge 3, a pressure regulating valve 4, an ult...
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