Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Pending Publication Date: 2022-05-06
XIAN UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of science and technology, in order to solve the problem of technical deficiencies in coal seam enhancement in the past, to carry out efficient pre-extraction and utilization of coal seam gas, prevent gas accidents and reduce environmental pollution, and maximize economic benefits, ultra-low temperature fluids such as liquid nitrogen are used as The anhydrous fracturing technology of fracturing fluid has gradually been paid attention to, but the laboratory lacks observation instruments for the energy and structural changes of the coal body in the whole process of liquid nitrogen cold impact coal body, and the theory of liquid nitrogen on the coal body in the laboratory still needs to be further developed. Discussion in order to provide guidance for coal seam permeability enhancement

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Experimental device for observing cold shock cracking coal body in whole process
  • Experimental device for observing cold shock cracking coal body in whole process
  • Experimental device for observing cold shock cracking coal body in whole process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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...

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of cold impact cracking coal bodies, and particularly relates to an experimental device for observing cold impact cracking coal bodies in a whole process, which comprises a coal sample storage system, a liquid nitrogen injection system, a liquid nitrogen cold impact system, an ultrasonic acquisition and processing system and a thermal imaging acquisition and processing system, the coal sample storage system is composed of a constant temperature and humidity chamber and a coal body; the liquid nitrogen injection system is composed of a self-pressurization liquid nitrogen tank, a valve, a pressure gauge, a pressure regulating valve, an ultralow temperature flowmeter, an ultralow temperature thermal insulation pipe and a liquid nitrogen cold impact fracturing device; the liquid nitrogen cold impact system comprises a liquid nitrogen cold impact fracturing device, and the liquid nitrogen cold impact fracturing device comprises a device shell; the experimental device disclosed by the invention has the beneficial effects that the experimental device disclosed by the invention can realize that a coal sample is rapidly immersed in liquid nitrogen and is rapidly separated from the liquid nitrogen, the time of cold impact of the coal body by the liquid nitrogen in a cold impact experiment is effectively controlled, and the accuracy of variable cold impact time is ensured.

Description

technical field [0001] The invention belongs to the technical field of cold shock fracturing coal bodies, and in particular relates to an experimental device for observing the whole process of cold shock fracturing coal bodies. Background technique [0002] my country's primary energy consumption structure is dominated by coal. With the steady development of my country's economy, the demand for coal has also increased. Coal has become an important resource base for my country's industrial and economic development. At present, most of the coal mines in my country are produced by underground mining, and with the passage of shallow coal mining time and the demand for energy, the hidden resources are increasingly exhausted, leading to the gradual entry of my country's mine mining into the deep mining stage. As the mine enters deep mining, the gas content and gas emission in the coal seam increase sharply. Especially under special conditions such as high ground stress and high gr...

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
no application Login to View More
IPC IPC(8): G01N3/60G01N3/06G01J5/12G01J5/48G01J5/80G01N33/22
CPCG01N3/60G01N3/06G01N3/068G01J5/48G01J5/12G01N33/222G01N2203/0066G01N2203/0228G01N2203/0658G01N2203/0694G01N2203/0682
Inventor 严敏林海飞罗荣卫白杨王裴丁洋双海清李博涛刘思博
Owner XIAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products