WO2024016926A1 - Test device and method for measuring strength of coal rock in gas-solid coupled state - Google Patents

Test device and method for measuring strength of coal rock in gas-solid coupled state Download PDF

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Publication number
WO2024016926A1
WO2024016926A1 PCT/CN2023/101194 CN2023101194W WO2024016926A1 WO 2024016926 A1 WO2024016926 A1 WO 2024016926A1 CN 2023101194 W CN2023101194 W CN 2023101194W WO 2024016926 A1 WO2024016926 A1 WO 2024016926A1
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WIPO (PCT)
Prior art keywords
cylinder
pressure
coal
gas
rock
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PCT/CN2023/101194
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French (fr)
Chinese (zh)
Inventor
郭怀广
曹垚林
曲晓明
仇海生
王宇鹍
王春光
田富超
苏伟伟
马金魁
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中煤科工集团沈阳研究院有限公司
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Publication of WO2024016926A1 publication Critical patent/WO2024016926A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0005—Repeated or cyclic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0032—Generation of the force using mechanical means
    • G01N2203/0039—Hammer or pendulum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/023—Pressure
    • G01N2203/0232—High pressure

Definitions

  • the invention belongs to the technical field of coal and gas outburst prediction index coal and rock strength measurement technology, and specifically relates to a test device and method for measuring the strength of coal and rock in a gas-solid coupled state.
  • Coal and gas outbursts are one of the major disaster accidents in coal mine production safety. my country's coal mine outburst prevention level has made great progress in recent years, but serious and large gas accidents still occur from time to time. Among them, coal and gas outburst accidents are frequent. In gas The proportion of accidents is increasing year by year. Coal and rock strength is an important indicator for predicting the risk of coal and gas outbursts. Accurate measurement of its index size is of great significance for predicting and preventing coal and gas outburst accidents.
  • the current method for measuring the strength of coal and rock is mainly the falling weight method.
  • the main principle is to measure the weight or volume of coal powder of a specific particle size formed by coal and rock under the impact of a free falling weight to reflect the strength of the coal and rock mass.
  • Existing testing methods and devices are manual operations with low accuracy and efficiency. They measure the strength of coal and rock mass in a naturally exposed state and cannot reflect the actual strength of deep coal and rock mass in the gas-solid coupling state. In order to measure the strength of coal and rock mass in the gas-solid coupling state, it is urgent to find new testing devices and methods that can achieve free drop weight testing under pressure.
  • the present invention is aimed at the problems of low accuracy and efficiency of existing manually operated coal and rock strength measurement methods and the inability of measurement results to reflect the actual strength of deep coal and rock mass in the gas-solid coupling state under exposure conditions. It makes up for the shortcomings of the existing technology and provides A test device and method for measuring the strength of coal and rock in the gas-solid coupling state under pressure is proposed. It is mainly used to test the solidity coefficient of coal and rock mass, and has the advantages of automated testing and pressure holding testing.
  • the present invention adopts the following technical solutions.
  • the invention provides a test device for measuring the strength of coal and rock in a gas-solid coupling state, which includes a high-pressure gas bottle, a booster pump, a pressure stabilizing device, a pressure-maintaining drop weight device, a vacuum pump and a high-pressure hose; the high-pressure gas bottle
  • the output end is connected to the booster pump through a high-pressure hose.
  • the output end of the booster pump is connected to the voltage stabilizing device through a high-pressure hose.
  • the output end of the voltage stabilizing device is connected to the input end of the pressure-maintaining drop-weight device through a high-pressure hose.
  • the output of the pressure-maintaining drop-weight device is The end is connected to the vacuum pump through a high-pressure hose;
  • the pressure-maintaining drop hammer device includes an electric control box and a heavy hammer crushing cylinder.
  • the heavy hammer crushing cylinder is fixed at the bottom of the electric control box, and the electric control box and the heavy hammer crushing cylinder are electrically connected;
  • the hammer crushing cylinder includes an upper cylinder, a middle cylinder, a lower cylinder, a magnetic induction cylinder, an electromagnetic chuck device and a weight.
  • the upper cylinder is connected to the middle cylinder, and the middle cylinder is connected to the lower cylinder.
  • One end of the magnetic induction cylinder is set on On the top of the upper cylinder, a cylinder telescopic rod is provided on the magnetic induction cylinder.
  • the cylinder telescopic rod passes through the upper cylinder and enters the middle cylinder.
  • An electromagnetic chuck device is installed in the middle cylinder.
  • the lower part of the cylinder telescopic rod is fixedly connected to the electromagnetic chuck device.
  • the electromagnetic The bottom of the suction cup device is adsorbed and connected to the weight; the electric control box and the magnetic induction cylinder are electrically connected.
  • the voltage stabilizing device is connected to the lower cylinder of the hammer crushing barrel through a high-pressure hose.
  • the lower cylinder of the weight crushing barrel is connected to the vacuum pump through a high-pressure hose. .
  • a first gate valve is connected to the high-pressure hose between the high-pressure gas bottle and the booster pump, and a first pressure sensor is connected to the high-pressure hose between the booster pump and the pressure stabilizing device.
  • the high-pressure hose between the pressure stabilizing device and the pressure-maintaining drop weight device is connected in sequence with a second gate valve, a second pressure sensor, and a flow sensor.
  • the high-pressure hose between the pressure-maintaining drop weight device and the vacuum pump is connected to a third gate valve, and the first pressure sensor, the second pressure sensor, and the flow sensor are all connected to a data collector.
  • the data collector is connected to a computer.
  • the electric control box is provided with an operation panel.
  • the operation panel is installed above the front wall of the electric control box.
  • a control circuit is provided inside the electric control box; the operation panel is provided with a frequency adjustment key, control switch and indicator light, the number adjustment key, control switch and indicator light are all connected to the control circuit.
  • the number adjustment key is electrically connected to the magnetic induction cylinder inside the heavy hammer crushing barrel through the control circuit; the electric control box is also connected to the magnetic induction cylinder inside the heavy hammer crushing barrel through the control circuit.
  • Booster pump and vacuum pump are electrically connected.
  • the top of the upper cylinder is provided with a first flange fixedly connected to the magnetic induction cylinder.
  • the first flange is connected to the mouth of the upper cylinder, and the magnetic induction cylinder
  • the cylinder is fixed on the center hole of the first flange.
  • the magnetic induction cylinder is also provided with a cylinder end.
  • the cylinder end is fixedly connected to the center of the first flange.
  • the cylinder end and the cylinder telescopic rod are sealed by a combined gasket.
  • Connection; a second flange is provided between the upper cylinder and the middle cylinder.
  • the upper cylinder and the middle cylinder are connected through the second flange.
  • the cylinder telescopic rod of the magnetic induction cylinder passes through the through hole in the center of the second flange. Enter the intermediate cylinder.
  • the upper cylinder is provided with a magnetic conversion control part for controlling whether the electromagnetic chuck device is magnetic or non-magnetic.
  • the magnetic conversion control part includes a conductive rod, a conductive roller, and a conductive slide, located in the cylinder.
  • the ends of the conductive rods on both sides of the cylinder telescopic rod are connected to conductive rollers.
  • Two conductive rollers are vertically arranged on the inner wall of the upper cylinder.
  • the conductive slide is connected with the roller.
  • the conductive roller can slide up and down through the driving of the cylinder telescopic rod and is connected to the conductive slide.
  • the conductive slide is electrically connected to the electric control box.
  • the conductive slideway includes a conductive copper sheet and a plexiglass plate groove.
  • the plexiglass plate groove is fixed on the inner wall of the upper cylinder, and the conductive copper sheet is fixedly clamped in the plexiglass plate groove.
  • the electromagnetic chuck device is provided with a universal joint structure.
  • the arrangement of the universal joint structure can ensure that when the bottom adsorption surface of the electromagnetic chuck device is in contact with the weight, the bottom adsorption surface of the electromagnetic chuck device and the top surface of the weight are Always stay parallel.
  • the lower cylinder is a cylinder for placing coal samples.
  • the lower cylinder includes a coal sample jar and a coal sample mortar.
  • the coal sample mortar is sleeved on the outside of the coal sample jar.
  • the coal sample mortar Higher than the coal sample tank, a pressure ring is provided at the connection between the lower cylinder and the middle cylinder. The pressure ring is clamped between the upper port of the coal sample mortar and the middle cylinder to achieve sealing between the middle cylinder and the lower cylinder.
  • the inner diameter of the sample mortar corresponds to the outer diameter of the coal sample tank.
  • the present invention also provides a test method for measuring the strength of coal and rock in the gas-solid coupled state, which is implemented by using the above-mentioned test device for measuring the strength of coal and rock in the gas-solid coupled state, and includes the following steps;
  • Step 1 Check the air tightness of the gas-solid coupling state coal and rock strength test device.
  • the specific steps are: The steps include: first placing the prepared coal sample in the lower cylinder, and then using the pressure ring to achieve sealing; opening the first gate valve, filling the high-pressure gas in the high-pressure gas bottle into the lower cylinder of the pressure-maintaining drop weight device containing the coal sample In the body, use the booster pump and pressure stabilizing device to reach the highest pressure required for the experiment, close the first gate valve; keep it for more than 6 hours, and observe whether the pressure changes; if there is a change, the test device needs to be tested; if there is no change, Use a vacuum pump to degas and evacuate the lower cylinder to conduct the next experiment;
  • Step 2 Fill the lower cylinder of the pressure-maintaining drop weight device containing the coal sample with methane gas CH 4 of a predetermined pressure.
  • the specific steps include: using a vacuum pump to degas and evacuate the lower cylinder, open the first gate valve, and perform Inflate; transmit the data of the first pressure sensor, the second pressure sensor, and the flow sensor to the computer through the data collector; keep it for more than 24 hours to allow the coal sample to fully absorb the gas, record the final equilibrium pressure, and close the first gate valve;
  • Step 3 Test the strength of coal and rock.
  • the specific steps include: after the coal sample is adsorbed and balanced, control the operation panel on the electric control box to perform a drop weight test to test the strength of the coal and rock under predetermined pressure conditions; repeat the above steps 1 and 2 to test Coal and rock strength under different gas pressure conditions.
  • the present invention solves the problem of low accuracy and low efficiency of the existing manually operated coal and rock strength measurement methods, and also solves the problem that the measurement results under exposure conditions cannot reflect the actual gas-solid coupling state of deep coal and rock masses.
  • it is mainly used to test the solidity coefficient of coal and rock mass, and has the advantages of automated testing and pressure-maintaining testing;
  • the present invention realizes the heavy hammer lifting of coal samples in a closed environment when filling with methane gas CH 4 -Free fall-lifting reciprocating motion realizes automatic crushing of coal samples at a certain height, thereby realizing automated testing of the solidity coefficient of coal and rock mass in a closed aeration environment.
  • Figure 1 is a schematic diagram of the overall structure of a test device for measuring the strength of coal and rock in a gas-solid coupled state according to the present invention.
  • Figure 2 is a schematic structural diagram of the operation panel of the present invention.
  • Figure 3 is a schematic structural diagram of the heavy hammer crushing cylinder of the present invention.
  • Figure 4 is a schematic structural diagram of the conductive roller of the present invention.
  • Figure 5 is a schematic structural diagram of the conductive slideway of the present invention.
  • the embodiment of the present invention provides a test device for measuring the strength of coal and rock in a gas-solid coupled state, including a high-pressure gas bottle 1, a booster pump 3, a pressure stabilizing device 5, and a pressure-maintaining drop weight device 9 , vacuum pump 13 and high-pressure hose; the output end of the high-pressure gas bottle 1 is connected to the booster pump 3 through the high-pressure hose, the output end of the booster pump 3 is connected to the voltage stabilizing device 5 through the high-pressure hose, and the output end of the voltage stabilizing device 5 is connected through the high-pressure hose.
  • the hose is connected to the input end of the pressure maintaining drop weight device 9, and the output end of the pressure maintaining drop weight device 9 is connected to the vacuum pump 13 through the high pressure hose;
  • the pressure maintaining drop weight device 9 includes an electric control box 10, a heavy hammer crushing cylinder 11, and a heavy hammer
  • the crushing drum 11 passes through the top of the electric control box 10 and is fixed to the inner bottom of the electric control box 10.
  • the electric control box 10 and the heavy hammer crushing drum 11 are electrically connected;
  • the heavy hammer crushing drum 11 includes an upper cylinder 21 and a middle cylinder. 26.
  • the upper cylinder 21 is connected with the middle cylinder 26, and the middle cylinder 26 is connected with the lower cylinder.
  • the magnetic induction cylinder 17 is set on the upper cylinder 21 top,
  • the magnetic induction cylinder 17 is provided with a cylinder telescopic rod 22.
  • the cylinder telescopic rod 22 passes through the upper cylinder 21 and enters the middle cylinder 26.
  • An electromagnetic chuck device 25 is installed in the middle cylinder 26.
  • the lower part of the cylinder telescopic rod 22 is in contact with the electromagnetic chuck device 25.
  • Fixed connection, the bottom of the electromagnetic chuck device 25 is adsorbed and connected to the weight 27; the electric control box 10 and the magnetic induction cylinder 17 are electrically connected, and the voltage stabilizing device 5 is connected to the lower cylinder of the weight crushing barrel 11 through a high-pressure hose.
  • the lower cylinder of 11 is connected to the vacuum pump 13 through a high-pressure hose.
  • a first gate valve 2 is connected to the high-pressure hose between the high-pressure gas cylinder 1 and the booster pump 3.
  • a first pressure sensor 4 is connected to the high-pressure hose between the booster pump 3 and the pressure stabilizing device 5.
  • the pressure stabilizing device The high-pressure hose between 5 and the pressure-maintaining drop weight device 9 is connected in sequence with a second gate valve 6, a second pressure sensor 7, and a flow sensor 8; specifically, the first gate valve 2 is used to control the high-pressure gas cylinder 1
  • the booster pump 3 can increase the pressure of the gas coming out of the high-pressure gas bottle 1, and the pressure stabilizing device 5 can stabilize the pressure of the gas after the pressure is raised to obtain a stable pressure gas;
  • the second gate valve 6 is used to control whether the gas in the high-pressure hose flows into the lower cylinder of the heavy hammer crushing barrel 11 of the pressure-maintaining drop hammer device 9.
  • the first pressure sensor 4 is used to detect the gas flowing in the high-pressure hose.
  • the second pressure sensor 7 is used to detect the gas pressure flowing into the lower cylinder of the heavy hammer crushing barrel 11 of the pressure-maintaining drop weight device 9, and the flow sensor 8 is used to detect the gas flowing into the pressure-maintaining drop hammer device 9.
  • a third gate valve 12 is connected to the high-pressure hose between the pressure-maintaining drop weight device 9 and the vacuum pump 13. Opening the third gate valve 12 allows the vacuum pump 13 to extract the lower cylinder of the heavy hammer crushing barrel 11 of the pressure-maintaining drop weight device 9.
  • the gas in the gas; the signal input end of the data collector 14 is connected to the first pressure sensor 4, the second pressure sensor 7, and the flow sensor 8 through lines, and the signal output end of the data collector 14 is connected to the computer 15 through lines.
  • the electric control box 10 is provided with an operation panel 16 .
  • the operation panel 16 is installed above the front wall of the electric control box 10 .
  • a control circuit is provided inside the electric control box 10 .
  • the control circuit is: For conventional circuits, the circuit connection structure and principles will not be described in detail in the embodiment of the present invention; the operation panel 16 is provided with a frequency adjustment key 162, a control switch 163 and an indicator light 161 to control the opening and closing of conventional circuits.
  • the switch 163 includes the air pump switch, the test switch, and the power switch.
  • the indicator light 161 includes the air pump indicator light, the rising indicator light, and the falling indicator light; the power switch is used to control the power on and off of the entire test device, and the test switch is used to control the pressure maintaining and falling.
  • the number of times adjustment key 162 is used to set and adjust the number of times the pressure-maintaining and falling weight device 9 works.
  • the pressure-maintaining and falling weight device 9 works, the cylinder telescopic rod 22 of the magnetic induction cylinder 17 moves up and down and rises.
  • the air pump switch is used to control the work of the vacuum pump 13.
  • the key 162, the control switch 163 and the indicator light 161 are all connected to the control circuit.
  • the frequency adjustment key 162 and the test switch are electrically connected to the magnetic induction cylinder 17 inside the hammer crushing barrel 11 through the control circuit; the electric control box 10 is also respectively connected through the control circuit. It is electrically connected to the booster pump 3 and the vacuum pump 13.
  • the top of the upper cylinder 21 is provided with a first flange 19 fixedly connected to the magnetic induction cylinder 17.
  • the first flange 19 is connected to the mouth of the upper cylinder 21.
  • the first flange 19 and the upper cylinder The connection between body 21 is sealed with an O-ring; the magnetic induction cylinder 17 is fixed on the center hole of the first flange 19, and the magnetic induction cylinder 17 is also provided with a cylinder end 18, which is fixedly connected to the first flange.
  • the cylinder end 18 and the cylinder telescopic rod 22 are sealed and connected through a combined gasket; a second flange 24 is provided between the upper cylinder 21 and the middle cylinder 26, and the upper cylinder 21 and the middle cylinder 26 are 26 are connected through the second flange 24, and the cylinder telescopic rod 22 of the magnetic induction cylinder 17 enters the intermediate cylinder 26 through the through hole in the center of the second flange 24.
  • the upper cylinder 21 is provided with a magnetic conversion control part for controlling whether the electromagnetic chuck device 25 is magnetic or non-magnetic.
  • the magnetic conversion control part includes a conductive rod 23, a conductive roller 31, a conductive slide Channel 32 is located on both sides of the cylinder telescopic rod 22 and is symmetrically connected to the center of the cylinder telescopic rod 22 with conductive rods 23.
  • the ends of the conductive rods 23 on both sides of the cylinder telescopic rod 22 are connected with conductive rollers 31, located on the upper cylinder 21
  • the inner wall is vertically provided with conductive slides 32 that are connected to two conductive rollers 31 respectively.
  • the conductive rollers 31 can slide up and down through the driving of the cylinder telescopic rod 22 and are connected to the conductive slides 32.
  • the conductive slides 32 are connected to the conductive slides 32.
  • the electric control boxes 10 are electrically connected.
  • the conductive slide 32 includes a conductive copper sheet 321 and a plexiglass plate groove 322.
  • the plexiglass plate groove 322 is fixed on the inner wall of the upper cylinder 21.
  • the conductive copper sheet 321 is fixedly clamped in the plexiglass plate groove 322;
  • the length of the piece 321 is less than the length of the organic glass plate groove 322.
  • the lower edge of the conductive copper piece 321 is aligned with the lower edge of the organic glass plate groove 322.
  • the upper edge of the conductive copper piece 321 is lower than the upper edge of the organic glass plate groove 322. In this way, the organic glass plate There will be a non-conductive copper sheet 321 area at the top of the slot 322 .
  • the electromagnetic chuck device 25 is provided with a universal joint structure.
  • the arrangement of the universal joint structure can ensure that when the bottom adsorption surface of the electromagnetic chuck device 25 comes into contact with the weight 27, the bottom adsorption surface of the electromagnetic chuck device 25 and the top of the weight 27 The faces always remain parallel.
  • the electromagnetic chuck device 25 is a prior art. In the embodiment of the present invention, the specific detailed structure of the electromagnetic chuck device 25 will not be described again.
  • the electromagnetic chuck device 25 is responsible for the separation and closing of the weight 27 . It is realized by turning off and on the power of its internal electromagnetic induction coil. When the electromagnetic chuck device 25 is powered on, there is magnetism to attract the weight 27. When the power is turned off, there is no magnetism and no effect on the weight 27; the magnetic induction cylinder 17 is telescopic by the cylinder.
  • the rod 22 drives the electromagnetic chuck device 25 to reciprocate up and down, and after the weight 27 is raised to a fixed height, the conductive roller 31 at the end of the conductive rod 23 connected to the cylinder telescopic rod 22 is located at the top of the conductive slide 32 There is no conductive copper sheet 321 area, so the electromagnetic chuck device 25 is powered off and does not have magnetism.
  • the weight 27 falls, and the weight 27 falls freely to crush the coal sample in the coal sample tank 30 .
  • the magnetic or non-magnetic state of the electromagnetic chuck device 25 is achieved by using a magnetic conversion control component.
  • the magnetic conversion control component is composed of a conductive rod 23, a conductive roller 31, and a conductive slide 32.
  • the electromagnetic chuck device 25 25.
  • the cylinder telescopic rod 22, conductive rod 23, conductive roller 31 and conductive slide 32 are electrically connected together. Whether the conductive slide 32 is energized is controlled through the operation panel 16 on the electric control box 10, thereby controlling the electromagnetic chuck. Electromagnetic magnetic conversion of device 25.
  • the lower cylinder is a cylinder for placing coal samples.
  • the lower cylinder includes a coal sample jar 30 and a coal sample mortar 29.
  • the coal sample mortar 29 is cooperatively connected to the outside of the coal sample jar 30.
  • the coal sample mortar 29 is higher than the coal sample jar. 30.
  • Lower cylinder and middle cylinder A pressure ring 28 is provided at the connection of the body 26. The pressure ring 28 is clamped between the upper port of the coal sample mortar 29 and the middle cylinder 26 to achieve sealing between the middle cylinder 26 and the lower cylinder.
  • the inner diameter of the coal sample mortar 29 is in contact with the coal. Corresponds to the outer diameter of the sample tank 30.
  • the present invention also provides a test method for measuring the strength of coal and rock in the gas-solid coupled state, which is implemented by using the above-mentioned test device for measuring the strength of coal and rock in the gas-solid coupled state, and includes the following steps;
  • Step 1 Check the air tightness of the gas-solid coupled coal and rock strength test device.
  • the specific steps include: first placing the prepared coal sample in the lower cylinder, and then using the pressure ring 28 to achieve sealing; opening the first gate valve 2.
  • Step 2 Fill the lower cylinder of the pressure-maintaining drop weight device 9 containing the coal sample with methane gas CH 4 of a predetermined pressure.
  • the specific steps include: using the vacuum pump 13 to degas and evacuate the lower cylinder, and then open the first gate valve. 2. Inflate; transmit the data of the first pressure sensor 4, the second pressure sensor 7, and the flow sensor 8 to the computer 15 through the data collector 14; keep it for more than 24 hours to allow the coal sample to fully absorb the gas, record the final equilibrium pressure, and close first gate valve 2;
  • Step 3 Test the strength of coal and rock.
  • the specific steps include: after the coal sample is adsorbed and balanced, control the operation panel 16 on the electric control box 10 to perform a drop weight test to test the strength of the coal and rock under predetermined pressure conditions; repeat the above steps 1 and 2. , testing the strength of coal and rock under different gas pressure conditions.

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Abstract

A test device and method for measuring the strength of coal rock in a gas-solid coupled state. The test apparatus comprises a high-pressure gas cylinder (1), a booster pump (3), a pressure stabilizing device (5), a pressure-maintaining drop hammer device (9), a vacuum pump (13) and high-pressure rubber hoses; an output end of the high-pressure gas cylinder (1) is connected to the booster pump (3) by means of a high-pressure rubber hose; an output end of the booster pump (3) is connected to the pressure stabilizing device (5) by means of a high-pressure rubber hose; an output end of the pressure stabilizing device (5) is connected to an input end of the pressure-maintaining drop hammer device (9) by means of a high-pressure rubber hose; an output end of the pressure-maintaining drop hammer device (9) is connected to the vacuum pump (13) by means of a high-pressure rubber hose; the pressure-maintaining drop hammer device (9) comprises an electric control box (10) and a heavy hammer crushing barrel (11), the heavy hammer crushing barrel (11) being fixed to the bottom of the electric control box (10), and the electric control box (10) being electrically connected to the heavy hammer crushing barrel (11); the heavy hammer crushing barrel (11) comprises an upper barrel body (21), a middle barrel body (26), a lower barrel body, a magnetic induction cylinder (17), an electromagnetic chuck device (25) and a heavy hammer (27). The device solves the problem of low precision and efficiency of a prior human-operated coal-rock strength measuring method, is mainly used for measuring a firmness coefficient of a coal-rock mass, and has the advantages of automated measurement and pressure-maintaining measurement.

Description

一种测定气固耦合态煤岩强度试验装置及方法A test device and method for measuring the strength of coal and rock in gas-solid coupled state 技术领域Technical field
本发明属于煤与瓦斯突出预测指标煤岩强度测定技术领域，具体地是涉及一种测定气固耦合态煤岩强度试验装置及方法。The invention belongs to the technical field of coal and gas outburst prediction index coal and rock strength measurement technology, and specifically relates to a test device and method for measuring the strength of coal and rock in a gas-solid coupled state.
背景技术Background technique
煤与瓦斯突出问题是煤矿安全生产中的重大灾害事故之一，我国煤矿防突水平近年来取得了长足的进步，但重特大瓦斯事故仍时有发生，其中煤与瓦斯突出事故多发，在瓦斯事故中所占比例逐年上升。煤岩强度是预测煤与瓦斯突出危险性的重要指标，准确测定其指标大小，对于预测及防治煤与瓦斯突出事故具有重要意义。Coal and gas outbursts are one of the major disaster accidents in coal mine production safety. my country's coal mine outburst prevention level has made great progress in recent years, but serious and large gas accidents still occur from time to time. Among them, coal and gas outburst accidents are frequent. In gas The proportion of accidents is increasing year by year. Coal and rock strength is an important indicator for predicting the risk of coal and gas outbursts. Accurate measurement of its index size is of great significance for predicting and preventing coal and gas outburst accidents.
目前测定煤岩强度的方法主要是落锤法，主要原理是测定煤岩在自由落体重锤的冲击下形成特定粒度煤粉的重量或者体积，来反映煤岩体的强度。现有的测试方法及装置，是人工操作，精度和效率低下，测定的是自然暴露状态煤岩体的强度，不能反映深部煤岩体气固耦合态下的实际强度。为了测定气固耦合态煤岩体强度，亟需寻求新的测试装置和方法，能够实现保压状态下的自由落锤测试。The current method for measuring the strength of coal and rock is mainly the falling weight method. The main principle is to measure the weight or volume of coal powder of a specific particle size formed by coal and rock under the impact of a free falling weight to reflect the strength of the coal and rock mass. Existing testing methods and devices are manual operations with low accuracy and efficiency. They measure the strength of coal and rock mass in a naturally exposed state and cannot reflect the actual strength of deep coal and rock mass in the gas-solid coupling state. In order to measure the strength of coal and rock mass in the gas-solid coupling state, it is urgent to find new testing devices and methods that can achieve free drop weight testing under pressure.
发明内容Contents of the invention
本发明就是针对现有人工操作的煤岩强度测定方法的精度和效率低下以及暴露条件下测定结果不能反映深部煤岩体气固耦合态下的实际强度的问题，弥补现有技术的不足，提供了一种保压状态下测定气固耦合态煤岩强度试验装置及方法，主要用于测试煤岩体坚固性系数，同时具备自动化测试及保压测试的优点。The present invention is aimed at the problems of low accuracy and efficiency of existing manually operated coal and rock strength measurement methods and the inability of measurement results to reflect the actual strength of deep coal and rock mass in the gas-solid coupling state under exposure conditions. It makes up for the shortcomings of the existing technology and provides A test device and method for measuring the strength of coal and rock in the gas-solid coupling state under pressure is proposed. It is mainly used to test the solidity coefficient of coal and rock mass, and has the advantages of automated testing and pressure holding testing.
为实现上述目的，本发明采用如下技术方案。In order to achieve the above object, the present invention adopts the following technical solutions.
本发明提供了一种测定气固耦合态煤岩强度试验装置，包括高压气瓶、增压泵、稳压装置、保压落锤装置、真空泵以及高压胶管；所述高压气瓶的 输出端通过高压胶管连接增压泵，增压泵的输出端通过高压胶管连接稳压装置，稳压装置的输出端通过高压胶管连接保压落锤装置的输入端，保压落锤装置的输出端通过高压胶管连接真空泵；所述保压落锤装置包括电控箱、重锤破碎筒，重锤破碎筒固定于电控箱底部，电控箱与重锤破碎筒之间电连接；所述重锤破碎筒包括上筒体、中间筒体、下筒体、磁感应气缸、电磁吸盘装置以及重锤，上筒体与中间筒体连通，中间筒体与下筒体连通，磁感应气缸一端设置于上筒体顶部，磁感应气缸上设置有气缸伸缩杆，气缸伸缩杆穿过上筒体进入中间筒体中，中间筒体中设置电磁吸盘装置，气缸伸缩杆的下部与电磁吸盘装置固定连接，电磁吸盘装置底部吸附连接重锤；电控箱与磁感应气缸之间电连接，稳压装置通过高压胶管与重锤破碎筒的下筒体连接，重锤破碎筒的下筒体通过高压胶管与真空泵连接。The invention provides a test device for measuring the strength of coal and rock in a gas-solid coupling state, which includes a high-pressure gas bottle, a booster pump, a pressure stabilizing device, a pressure-maintaining drop weight device, a vacuum pump and a high-pressure hose; the high-pressure gas bottle The output end is connected to the booster pump through a high-pressure hose. The output end of the booster pump is connected to the voltage stabilizing device through a high-pressure hose. The output end of the voltage stabilizing device is connected to the input end of the pressure-maintaining drop-weight device through a high-pressure hose. The output of the pressure-maintaining drop-weight device is The end is connected to the vacuum pump through a high-pressure hose; the pressure-maintaining drop hammer device includes an electric control box and a heavy hammer crushing cylinder. The heavy hammer crushing cylinder is fixed at the bottom of the electric control box, and the electric control box and the heavy hammer crushing cylinder are electrically connected; The hammer crushing cylinder includes an upper cylinder, a middle cylinder, a lower cylinder, a magnetic induction cylinder, an electromagnetic chuck device and a weight. The upper cylinder is connected to the middle cylinder, and the middle cylinder is connected to the lower cylinder. One end of the magnetic induction cylinder is set on On the top of the upper cylinder, a cylinder telescopic rod is provided on the magnetic induction cylinder. The cylinder telescopic rod passes through the upper cylinder and enters the middle cylinder. An electromagnetic chuck device is installed in the middle cylinder. The lower part of the cylinder telescopic rod is fixedly connected to the electromagnetic chuck device. The electromagnetic The bottom of the suction cup device is adsorbed and connected to the weight; the electric control box and the magnetic induction cylinder are electrically connected. The voltage stabilizing device is connected to the lower cylinder of the hammer crushing barrel through a high-pressure hose. The lower cylinder of the weight crushing barrel is connected to the vacuum pump through a high-pressure hose. .
作为本发明的一种优选方案，所述高压气瓶与增压泵之间的高压胶管上连接有第一闸阀，增压泵与稳压装置之间的高压胶管上连接有第一压力传感器，稳压装置与保压落锤装置之间的高压胶管上依次连接有第二闸阀、第二压力传感器、流量传感器。As a preferred solution of the present invention, a first gate valve is connected to the high-pressure hose between the high-pressure gas bottle and the booster pump, and a first pressure sensor is connected to the high-pressure hose between the booster pump and the pressure stabilizing device. The high-pressure hose between the pressure stabilizing device and the pressure-maintaining drop weight device is connected in sequence with a second gate valve, a second pressure sensor, and a flow sensor.
作为本发明的另一种优选方案，所述保压落锤装置与真空泵之间的高压胶管上连接有第三闸阀，第一压力传感器、第二压力传感器、流量传感器均连接有数据采集器，数据采集器连接有计算机。As another preferred solution of the present invention, the high-pressure hose between the pressure-maintaining drop weight device and the vacuum pump is connected to a third gate valve, and the first pressure sensor, the second pressure sensor, and the flow sensor are all connected to a data collector. The data collector is connected to a computer.
作为本发明的另一种优选方案，所述电控箱上设置有操作面板，操作面板安装于电控箱前侧箱壁上方，电控箱内部设置有控制电路；操作面板上设置有次数调节键、控制开关以及指示灯，次数调节键、控制开关以及指示灯均与控制电路相连，次数调节键通过控制电路与重锤破碎筒内部的磁感应气缸电连接；电控箱通过控制电路还分别与增压泵、真空泵电连接。As another preferred solution of the present invention, the electric control box is provided with an operation panel. The operation panel is installed above the front wall of the electric control box. A control circuit is provided inside the electric control box; the operation panel is provided with a frequency adjustment key, control switch and indicator light, the number adjustment key, control switch and indicator light are all connected to the control circuit. The number adjustment key is electrically connected to the magnetic induction cylinder inside the heavy hammer crushing barrel through the control circuit; the electric control box is also connected to the magnetic induction cylinder inside the heavy hammer crushing barrel through the control circuit. Booster pump and vacuum pump are electrically connected.
作为本发明的另一种优选方案，所述上筒体顶部设置有与磁感应气缸固定连接在一起的第一法兰盘，第一法兰盘连接于上筒体的筒口上，磁感应气 缸固定于第一法兰盘的中心孔上，磁感应气缸上还设置有气缸端头，气缸端头固定连接于第一法兰盘中心处，气缸端头与气缸伸缩杆之间通过组合垫圈密封连接；上筒体与中间筒体之间设置有第二法兰盘，上筒体与中间筒体通过第二法兰盘连接，磁感应气缸的气缸伸缩杆经过第二法兰盘中心的通孔进入到中间筒体中。As another preferred solution of the present invention, the top of the upper cylinder is provided with a first flange fixedly connected to the magnetic induction cylinder. The first flange is connected to the mouth of the upper cylinder, and the magnetic induction cylinder The cylinder is fixed on the center hole of the first flange. The magnetic induction cylinder is also provided with a cylinder end. The cylinder end is fixedly connected to the center of the first flange. The cylinder end and the cylinder telescopic rod are sealed by a combined gasket. Connection; a second flange is provided between the upper cylinder and the middle cylinder. The upper cylinder and the middle cylinder are connected through the second flange. The cylinder telescopic rod of the magnetic induction cylinder passes through the through hole in the center of the second flange. Enter the intermediate cylinder.
作为本发明的另一种优选方案，所述上筒体内设置有用于控制电磁吸盘装置有磁性或无磁性的磁性变换控制件，磁性变换控制件包括导电杆、导电滚轮、导电滑道，位于气缸伸缩杆的两侧且关于气缸伸缩杆的中心对称连接有导电杆，气缸伸缩杆两侧的导电杆端部均连接有导电滚轮，位于上筒体内侧壁上竖直设置有分别与两个导电滚轮配合连接的导电滑道，导电滚轮通过气缸伸缩杆的带动可上、下滑动连接于导电滑道中，导电滑道与电控箱之间电连接。As another preferred solution of the present invention, the upper cylinder is provided with a magnetic conversion control part for controlling whether the electromagnetic chuck device is magnetic or non-magnetic. The magnetic conversion control part includes a conductive rod, a conductive roller, and a conductive slide, located in the cylinder. There are conductive rods connected to both sides of the telescopic rod and symmetrically about the center of the cylinder telescopic rod. The ends of the conductive rods on both sides of the cylinder telescopic rod are connected to conductive rollers. Two conductive rollers are vertically arranged on the inner wall of the upper cylinder. The conductive slide is connected with the roller. The conductive roller can slide up and down through the driving of the cylinder telescopic rod and is connected to the conductive slide. The conductive slide is electrically connected to the electric control box.
进一步地，所述导电滑道包括导电铜片、有机玻璃板槽，有机玻璃板槽固定于上筒体内侧壁上，导电铜片固定卡接于有机玻璃板槽中。Further, the conductive slideway includes a conductive copper sheet and a plexiglass plate groove. The plexiglass plate groove is fixed on the inner wall of the upper cylinder, and the conductive copper sheet is fixedly clamped in the plexiglass plate groove.
更进一步地，所述电磁吸盘装置上设置有万向节结构，万向节结构的设置可以保证电磁吸盘装置的底部吸附面在与重锤接触时，电磁吸盘装置底部吸附面和重锤顶面始终保持平行。Furthermore, the electromagnetic chuck device is provided with a universal joint structure. The arrangement of the universal joint structure can ensure that when the bottom adsorption surface of the electromagnetic chuck device is in contact with the weight, the bottom adsorption surface of the electromagnetic chuck device and the top surface of the weight are Always stay parallel.
作为本发明的另一种优选方案，所述下筒体为煤样放置筒体，下筒体包括煤样罐与煤样臼，煤样臼配合套接于煤样罐的外侧，煤样臼高于煤样罐，下筒体与中间筒体连接处设置有压环，采用压环卡接于煤样臼上端口与中间筒体之间，实现中间筒体与下筒体的密封，煤样臼内径与煤样罐的外径相对应。As another preferred embodiment of the present invention, the lower cylinder is a cylinder for placing coal samples. The lower cylinder includes a coal sample jar and a coal sample mortar. The coal sample mortar is sleeved on the outside of the coal sample jar. The coal sample mortar Higher than the coal sample tank, a pressure ring is provided at the connection between the lower cylinder and the middle cylinder. The pressure ring is clamped between the upper port of the coal sample mortar and the middle cylinder to achieve sealing between the middle cylinder and the lower cylinder. The inner diameter of the sample mortar corresponds to the outer diameter of the coal sample tank.
本发明还提供了一种测定气固耦合态煤岩强度试验方法，利用上述的测定气固耦合态煤岩强度试验装置实现，包括如下步骤；The present invention also provides a test method for measuring the strength of coal and rock in the gas-solid coupled state, which is implemented by using the above-mentioned test device for measuring the strength of coal and rock in the gas-solid coupled state, and includes the following steps;
步骤一，检查所述测定气固耦合态煤岩强度试验装置的气密性，具体步 骤包括：先将制备好的煤样放置在下筒体中，再利用压环实现密封；打开第一闸阀，将高压气瓶中的高压气体充入保压落锤装置装有煤样的下筒体中，并利用增压泵及稳压装置达到实验所需最高压力，关闭第一闸阀；保持6小时以上，观测压力是否有变化；若有变化，需对试验装置进行检测；若无变化，利用真空泵对下筒体脱气抽真空，进行下一步实验；Step 1: Check the air tightness of the gas-solid coupling state coal and rock strength test device. The specific steps are: The steps include: first placing the prepared coal sample in the lower cylinder, and then using the pressure ring to achieve sealing; opening the first gate valve, filling the high-pressure gas in the high-pressure gas bottle into the lower cylinder of the pressure-maintaining drop weight device containing the coal sample In the body, use the booster pump and pressure stabilizing device to reach the highest pressure required for the experiment, close the first gate valve; keep it for more than 6 hours, and observe whether the pressure changes; if there is a change, the test device needs to be tested; if there is no change, Use a vacuum pump to degas and evacuate the lower cylinder to conduct the next experiment;
步骤二，向保压落锤装置装有煤样的下筒体中充入预定压力的甲烷气体CH4，具体步骤包括：利用真空泵对下筒体脱气抽真空后，打开第一闸阀，进行充气；通过数据采集器将第一压力传感器、第二压力传感器、流量传感器的数据传输至计算机；保持24h以上，使煤样充分吸附气体，记录最终平衡压力，关闭第一闸阀；Step 2: Fill the lower cylinder of the pressure-maintaining drop weight device containing the coal sample with methane gas CH 4 of a predetermined pressure. The specific steps include: using a vacuum pump to degas and evacuate the lower cylinder, open the first gate valve, and perform Inflate; transmit the data of the first pressure sensor, the second pressure sensor, and the flow sensor to the computer through the data collector; keep it for more than 24 hours to allow the coal sample to fully absorb the gas, record the final equilibrium pressure, and close the first gate valve;
步骤三，煤岩强度测试，具体步骤包括：煤样吸附平衡后，操控电控箱上的操作面板进行落锤试验，测试在预定压力条件下煤岩强度；重复上述步骤一、步骤二，测试在不同气体压力条件下煤岩强度。Step 3: Test the strength of coal and rock. The specific steps include: after the coal sample is adsorbed and balanced, control the operation panel on the electric control box to perform a drop weight test to test the strength of the coal and rock under predetermined pressure conditions; repeat the above steps 1 and 2 to test Coal and rock strength under different gas pressure conditions.
本发明有益效果：Beneficial effects of the present invention:
与现有技术相比，本发明解决了现有人工操作的煤岩强度测定方法的精度和效率低下的问题，还解决了暴露条件下测定结果不能反映深部煤岩体气固耦合态下的实际强度的问题，主要用于测试煤岩体坚固性系数，同时具备自动化测试及保压测试的优点；本发明在充入甲烷气体CH4情况下，实现了煤样在封闭环境中的重锤提升-自由下落-提升的往复运动，实现了一定高度下对煤样的自动破碎，从而实现了封闭充气环境下煤岩体坚固性系数的自动化测试。Compared with the existing technology, the present invention solves the problem of low accuracy and low efficiency of the existing manually operated coal and rock strength measurement methods, and also solves the problem that the measurement results under exposure conditions cannot reflect the actual gas-solid coupling state of deep coal and rock masses. In terms of strength, it is mainly used to test the solidity coefficient of coal and rock mass, and has the advantages of automated testing and pressure-maintaining testing; the present invention realizes the heavy hammer lifting of coal samples in a closed environment when filling with methane gas CH 4 -Free fall-lifting reciprocating motion realizes automatic crushing of coal samples at a certain height, thereby realizing automated testing of the solidity coefficient of coal and rock mass in a closed aeration environment.
附图说明Description of drawings
图1是本发明一种测定气固耦合态煤岩强度试验装置的整体结构示意图。Figure 1 is a schematic diagram of the overall structure of a test device for measuring the strength of coal and rock in a gas-solid coupled state according to the present invention.
图2是本发明操作面板的结构示意图。Figure 2 is a schematic structural diagram of the operation panel of the present invention.
图3是本发明重锤破碎筒的结构示意图。 Figure 3 is a schematic structural diagram of the heavy hammer crushing cylinder of the present invention.
图4是本发明导电滚轮的结构示意图。Figure 4 is a schematic structural diagram of the conductive roller of the present invention.
图5是本发明导电滑道的结构示意图。Figure 5 is a schematic structural diagram of the conductive slideway of the present invention.
附图标记：1为高压气瓶；2为第一闸阀；3为增压泵；4为第一压力传感器；5为稳压装置；6为第二闸阀；7为第二压力传感器；8为流量传感器；9为保压落锤装置；10为电控箱；11为重锤破碎筒；12为第三闸阀；13为真空泵；14为数据采集器；15为计算机；16为操作面板；161为指示灯；162为次数调节键；163为控制开关；17为磁感应气缸；18为气缸端头；19为第一法兰盘；21为上筒体；22为气缸伸缩杆；23为导电杆；24为第二法兰盘；25为电磁吸盘装置；26为中间筒体；27为重锤；28为压环；29为煤样臼；30为煤样罐；31为导电滚轮；32为导电滑道；321为导电铜片；322为有机玻璃板槽。Reference signs: 1 is the high-pressure gas cylinder; 2 is the first gate valve; 3 is the booster pump; 4 is the first pressure sensor; 5 is the pressure stabilizing device; 6 is the second gate valve; 7 is the second pressure sensor; 8 is Flow sensor; 9 is the pressure maintaining drop weight device; 10 is the electric control box; 11 is the heavy hammer crushing cylinder; 12 is the third gate valve; 13 is the vacuum pump; 14 is the data collector; 15 is the computer; 16 is the operation panel; 161 162 is the frequency adjustment key; 163 is the control switch; 17 is the magnetic induction cylinder; 18 is the cylinder end; 19 is the first flange; 21 is the upper cylinder; 22 is the cylinder telescopic rod; 23 is the conductive rod ; 24 is the second flange; 25 is the electromagnetic chuck device; 26 is the middle cylinder; 27 is the weight; 28 is the pressure ring; 29 is the coal sample mortar; 30 is the coal sample tank; 31 is the conductive roller; 32 is Conductive slide; 321 is a conductive copper sheet; 322 is a plexiglass plate groove.
具体实施方式Detailed ways
为了使本发明所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及具体实施方式，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施方式仅仅用以解释本发明，并不用于限定本发明。In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.
结合图1、图3所示，本发明实施例提供了一种测定气固耦合态煤岩强度试验装置，包括高压气瓶1、增压泵3、稳压装置5、保压落锤装置9、真空泵13以及高压胶管；所述高压气瓶1的输出端通过高压胶管连接增压泵3，增压泵3的输出端通过高压胶管连接稳压装置5，稳压装置5的输出端通过高压胶管连接保压落锤装置9的输入端，保压落锤装置9的输出端通过高压胶管连接真空泵13；所述保压落锤装置9包括电控箱10、重锤破碎筒11，重锤破碎筒11穿过电控箱10顶部固定于电控箱10内底部，电控箱10与重锤破碎筒11之间电连接；所述重锤破碎筒11包括上筒体21、中间筒体26、下筒体、磁感应气缸17、电磁吸盘装置25以及重锤27，上筒体21与中间筒体26连通，中间筒体26与下筒体连通，磁感应气缸17一端设置于上筒体21顶部， 磁感应气缸17上设置有气缸伸缩杆22，气缸伸缩杆22穿过上筒体21进入中间筒体26中，中间筒体26中设置电磁吸盘装置25，气缸伸缩杆22的下部与电磁吸盘装置25固定连接，电磁吸盘装置25底部吸附连接重锤27；电控箱10与磁感应气缸17之间电连接，稳压装置5通过高压胶管与重锤破碎筒11的下筒体连接，重锤破碎筒11的下筒体通过高压胶管与真空泵13连接。As shown in Figures 1 and 3, the embodiment of the present invention provides a test device for measuring the strength of coal and rock in a gas-solid coupled state, including a high-pressure gas bottle 1, a booster pump 3, a pressure stabilizing device 5, and a pressure-maintaining drop weight device 9 , vacuum pump 13 and high-pressure hose; the output end of the high-pressure gas bottle 1 is connected to the booster pump 3 through the high-pressure hose, the output end of the booster pump 3 is connected to the voltage stabilizing device 5 through the high-pressure hose, and the output end of the voltage stabilizing device 5 is connected through the high-pressure hose. The hose is connected to the input end of the pressure maintaining drop weight device 9, and the output end of the pressure maintaining drop weight device 9 is connected to the vacuum pump 13 through the high pressure hose; the pressure maintaining drop weight device 9 includes an electric control box 10, a heavy hammer crushing cylinder 11, and a heavy hammer The crushing drum 11 passes through the top of the electric control box 10 and is fixed to the inner bottom of the electric control box 10. The electric control box 10 and the heavy hammer crushing drum 11 are electrically connected; the heavy hammer crushing drum 11 includes an upper cylinder 21 and a middle cylinder. 26. Lower cylinder, magnetic induction cylinder 17, electromagnetic chuck device 25 and weight 27. The upper cylinder 21 is connected with the middle cylinder 26, and the middle cylinder 26 is connected with the lower cylinder. One end of the magnetic induction cylinder 17 is set on the upper cylinder 21 top, The magnetic induction cylinder 17 is provided with a cylinder telescopic rod 22. The cylinder telescopic rod 22 passes through the upper cylinder 21 and enters the middle cylinder 26. An electromagnetic chuck device 25 is installed in the middle cylinder 26. The lower part of the cylinder telescopic rod 22 is in contact with the electromagnetic chuck device 25. Fixed connection, the bottom of the electromagnetic chuck device 25 is adsorbed and connected to the weight 27; the electric control box 10 and the magnetic induction cylinder 17 are electrically connected, and the voltage stabilizing device 5 is connected to the lower cylinder of the weight crushing barrel 11 through a high-pressure hose. The weight crushing barrel The lower cylinder of 11 is connected to the vacuum pump 13 through a high-pressure hose.
所述高压气瓶1与增压泵3之间的高压胶管上连接有第一闸阀2，增压泵3与稳压装置5之间的高压胶管上连接有第一压力传感器4，稳压装置5与保压落锤装置9之间的高压胶管上依次连接有第二闸阀6、第二压力传感器7、流量传感器8；具体地，所述的第一闸阀2用于控制高压气瓶1中的气体流通情况，所述的增压泵3能够对高压气瓶1出来的气体压力进行提升，所述的稳压装置5可对提升压力后的气体进行稳压，以得到稳压气体；所述的第二闸阀6用于控制高压胶管中的气体是否流进保压落锤装置9的重锤破碎筒11下筒体中，所述的第一压力传感器4用于检测高压胶管中流通气体的压力情况，所述的第二压力传感器7用于检测流进保压落锤装置9的重锤破碎筒11下筒体中的气体压力情况，所述的流量传感器8用于检测流进保压落锤装置9的重锤破碎筒11下筒体中的气体流量情况。A first gate valve 2 is connected to the high-pressure hose between the high-pressure gas cylinder 1 and the booster pump 3. A first pressure sensor 4 is connected to the high-pressure hose between the booster pump 3 and the pressure stabilizing device 5. The pressure stabilizing device The high-pressure hose between 5 and the pressure-maintaining drop weight device 9 is connected in sequence with a second gate valve 6, a second pressure sensor 7, and a flow sensor 8; specifically, the first gate valve 2 is used to control the high-pressure gas cylinder 1 According to the gas circulation situation, the booster pump 3 can increase the pressure of the gas coming out of the high-pressure gas bottle 1, and the pressure stabilizing device 5 can stabilize the pressure of the gas after the pressure is raised to obtain a stable pressure gas; The second gate valve 6 is used to control whether the gas in the high-pressure hose flows into the lower cylinder of the heavy hammer crushing barrel 11 of the pressure-maintaining drop hammer device 9. The first pressure sensor 4 is used to detect the gas flowing in the high-pressure hose. The second pressure sensor 7 is used to detect the gas pressure flowing into the lower cylinder of the heavy hammer crushing barrel 11 of the pressure-maintaining drop weight device 9, and the flow sensor 8 is used to detect the gas flowing into the pressure-maintaining drop hammer device 9. The gas flow situation in the lower cylinder of the heavy hammer crushing cylinder 11 of the falling hammer device 9.
所述保压落锤装置9与真空泵13之间的高压胶管上连接有第三闸阀12，打开第三闸阀12，可以使真空泵13抽出保压落锤装置9的重锤破碎筒11下筒体中的气体；数据采集器14的信号输入端通过线路与第一压力传感器4、第二压力传感器7、流量传感器8之间连接，数据采集器14的信号输出端通过线路与计算机15连接。A third gate valve 12 is connected to the high-pressure hose between the pressure-maintaining drop weight device 9 and the vacuum pump 13. Opening the third gate valve 12 allows the vacuum pump 13 to extract the lower cylinder of the heavy hammer crushing barrel 11 of the pressure-maintaining drop weight device 9. The gas in the gas; the signal input end of the data collector 14 is connected to the first pressure sensor 4, the second pressure sensor 7, and the flow sensor 8 through lines, and the signal output end of the data collector 14 is connected to the computer 15 through lines.
结合图1至图3所示，所述电控箱10上设置有操作面板16，操作面板16安装于电控箱10前侧箱壁上方，电控箱10内部设置有控制电路，控制电路为常规电路，在本发明实施例中对其电路连接结构以及原理不做赘述；操作面板16上设置有次数调节键162、控制开关163以及指示灯161，控制开 关163包括气泵开关、试验开关、电源开关，指示灯161包括气泵显示灯、上升显示灯、下降显示灯；电源开关用于控制整个试验装置的通电与断电，试验开关用于控制保压落锤装置9的工作，次数调节键162用于设定和调节保压落锤装置9的工作次数，保压落锤装置9工作时，磁感应气缸17的气缸伸缩杆22会上、下运动，上升时对应上升显示灯点亮、下降时对应下降显示灯点亮，以实现重锤27的提升与下落；气泵开关用于控制真空泵13的工作，真空泵13工作时，气泵显示灯点亮；次数调节键162、控制开关163以及指示灯161均与控制电路相连，次数调节键162、试验开关均通过控制电路与重锤破碎筒11内部的磁感应气缸17电连接；电控箱10通过控制电路还分别与增压泵3、真空泵13电连接。As shown in FIGS. 1 to 3 , the electric control box 10 is provided with an operation panel 16 . The operation panel 16 is installed above the front wall of the electric control box 10 . A control circuit is provided inside the electric control box 10 . The control circuit is: For conventional circuits, the circuit connection structure and principles will not be described in detail in the embodiment of the present invention; the operation panel 16 is provided with a frequency adjustment key 162, a control switch 163 and an indicator light 161 to control the opening and closing of conventional circuits. The switch 163 includes the air pump switch, the test switch, and the power switch. The indicator light 161 includes the air pump indicator light, the rising indicator light, and the falling indicator light; the power switch is used to control the power on and off of the entire test device, and the test switch is used to control the pressure maintaining and falling. When the hammer device 9 works, the number of times adjustment key 162 is used to set and adjust the number of times the pressure-maintaining and falling weight device 9 works. When the pressure-maintaining and falling weight device 9 works, the cylinder telescopic rod 22 of the magnetic induction cylinder 17 moves up and down and rises. When the corresponding rising indicator light is on, when it is falling, the corresponding falling indicator light is on, so as to realize the lifting and falling of the weight 27; the air pump switch is used to control the work of the vacuum pump 13. When the vacuum pump 13 is working, the air pump indicator light is on; the number of times is adjusted The key 162, the control switch 163 and the indicator light 161 are all connected to the control circuit. The frequency adjustment key 162 and the test switch are electrically connected to the magnetic induction cylinder 17 inside the hammer crushing barrel 11 through the control circuit; the electric control box 10 is also respectively connected through the control circuit. It is electrically connected to the booster pump 3 and the vacuum pump 13.
所述上筒体21顶部设置有与磁感应气缸17固定连接在一起的第一法兰盘19，第一法兰盘19连接于上筒体21的筒口上，第一法兰盘19与上筒体21连接处采用O型密封圈密封；磁感应气缸17固定于第一法兰盘19的中心孔上，磁感应气缸17上还设置有气缸端头18，气缸端头18固定连接于第一法兰盘19中心处，气缸端头18与气缸伸缩杆22之间通过组合垫圈密封连接；上筒体21与中间筒体26之间设置有第二法兰盘24，上筒体21与中间筒体26通过第二法兰盘24连接，磁感应气缸17的气缸伸缩杆22经过第二法兰盘24中心的通孔进入到中间筒体26中。The top of the upper cylinder 21 is provided with a first flange 19 fixedly connected to the magnetic induction cylinder 17. The first flange 19 is connected to the mouth of the upper cylinder 21. The first flange 19 and the upper cylinder The connection between body 21 is sealed with an O-ring; the magnetic induction cylinder 17 is fixed on the center hole of the first flange 19, and the magnetic induction cylinder 17 is also provided with a cylinder end 18, which is fixedly connected to the first flange. At the center of the disk 19, the cylinder end 18 and the cylinder telescopic rod 22 are sealed and connected through a combined gasket; a second flange 24 is provided between the upper cylinder 21 and the middle cylinder 26, and the upper cylinder 21 and the middle cylinder 26 are 26 are connected through the second flange 24, and the cylinder telescopic rod 22 of the magnetic induction cylinder 17 enters the intermediate cylinder 26 through the through hole in the center of the second flange 24.
结合图3至图5所示，所述上筒体21内设置有用于控制电磁吸盘装置25有磁性或无磁性的磁性变换控制件，磁性变换控制件包括导电杆23、导电滚轮31、导电滑道32，位于气缸伸缩杆22的两侧且关于气缸伸缩杆22的中心对称连接有导电杆23，气缸伸缩杆22两侧的导电杆23端部均连接有导电滚轮31，位于上筒体21内侧壁上竖直设置有分别与两个导电滚轮31配合连接的导电滑道32，导电滚轮31通过气缸伸缩杆22的带动可上、下滑动连接于导电滑道32中，导电滑道32与电控箱10之间电连接。 As shown in Figures 3 to 5, the upper cylinder 21 is provided with a magnetic conversion control part for controlling whether the electromagnetic chuck device 25 is magnetic or non-magnetic. The magnetic conversion control part includes a conductive rod 23, a conductive roller 31, a conductive slide Channel 32 is located on both sides of the cylinder telescopic rod 22 and is symmetrically connected to the center of the cylinder telescopic rod 22 with conductive rods 23. The ends of the conductive rods 23 on both sides of the cylinder telescopic rod 22 are connected with conductive rollers 31, located on the upper cylinder 21 The inner wall is vertically provided with conductive slides 32 that are connected to two conductive rollers 31 respectively. The conductive rollers 31 can slide up and down through the driving of the cylinder telescopic rod 22 and are connected to the conductive slides 32. The conductive slides 32 are connected to the conductive slides 32. The electric control boxes 10 are electrically connected.
所述导电滑道32包括导电铜片321、有机玻璃板槽322，有机玻璃板槽322固定于上筒体21内侧壁上，导电铜片321固定卡接于有机玻璃板槽322中；导电铜片321的长度小于有机玻璃板槽322的长度，导电铜片321下端边缘与有机玻璃板槽322下端边缘对齐，导电铜片321上端边缘低于有机玻璃板槽322上端边缘，这样在有机玻璃板槽322中的顶部会有一段无导电铜片321区域。The conductive slide 32 includes a conductive copper sheet 321 and a plexiglass plate groove 322. The plexiglass plate groove 322 is fixed on the inner wall of the upper cylinder 21. The conductive copper sheet 321 is fixedly clamped in the plexiglass plate groove 322; The length of the piece 321 is less than the length of the organic glass plate groove 322. The lower edge of the conductive copper piece 321 is aligned with the lower edge of the organic glass plate groove 322. The upper edge of the conductive copper piece 321 is lower than the upper edge of the organic glass plate groove 322. In this way, the organic glass plate There will be a non-conductive copper sheet 321 area at the top of the slot 322 .
所述电磁吸盘装置25上设置有万向节结构，万向节结构的设置可以保证电磁吸盘装置25的底部吸附面在与重锤27接触时，电磁吸盘装置25底部吸附面和重锤27顶面始终保持平行。The electromagnetic chuck device 25 is provided with a universal joint structure. The arrangement of the universal joint structure can ensure that when the bottom adsorption surface of the electromagnetic chuck device 25 comes into contact with the weight 27, the bottom adsorption surface of the electromagnetic chuck device 25 and the top of the weight 27 The faces always remain parallel.
需说明的是，所述电磁吸盘装置25为现有技术，在本发明实施例中，对电磁吸盘装置25的具体细节结构不做赘述，所述电磁吸盘装置25对重锤27的离、合是通过其内部电磁感应线圈的断电、通电来实现，电磁吸盘装置25通电时存在磁性吸引重锤27，断电时没有磁性，对重锤27不发生作用；所述磁感应气缸17通过气缸伸缩杆22带动对电磁吸盘装置25上、下往复运动，将重锤27提升至一个固定高度后，此时气缸伸缩杆22上连接的导电杆23端部的导电滚轮31位于导电滑道32的顶部无导电铜片321区域，因此电磁吸盘装置25断电，不具有磁性，重锤27下落，重锤27自由落体对煤样罐30中的煤样进行破碎。具体地，所述电磁吸盘装置25的有磁性或无磁性即磁性变换是利用磁性变换控制件来实现的，磁性变换控制件由导电杆23、导电滚轮31、导电滑道32构成，电磁吸盘装置25、气缸伸缩杆22、导电杆23、导电滚轮31与导电滑道32之间电连接在一起，通过电控箱10上的操作面板16来控制导电滑道32是否通电，进而实现控制电磁吸盘装置25的电磁磁性变换。It should be noted that the electromagnetic chuck device 25 is a prior art. In the embodiment of the present invention, the specific detailed structure of the electromagnetic chuck device 25 will not be described again. The electromagnetic chuck device 25 is responsible for the separation and closing of the weight 27 . It is realized by turning off and on the power of its internal electromagnetic induction coil. When the electromagnetic chuck device 25 is powered on, there is magnetism to attract the weight 27. When the power is turned off, there is no magnetism and no effect on the weight 27; the magnetic induction cylinder 17 is telescopic by the cylinder. The rod 22 drives the electromagnetic chuck device 25 to reciprocate up and down, and after the weight 27 is raised to a fixed height, the conductive roller 31 at the end of the conductive rod 23 connected to the cylinder telescopic rod 22 is located at the top of the conductive slide 32 There is no conductive copper sheet 321 area, so the electromagnetic chuck device 25 is powered off and does not have magnetism. The weight 27 falls, and the weight 27 falls freely to crush the coal sample in the coal sample tank 30 . Specifically, the magnetic or non-magnetic state of the electromagnetic chuck device 25 is achieved by using a magnetic conversion control component. The magnetic conversion control component is composed of a conductive rod 23, a conductive roller 31, and a conductive slide 32. The electromagnetic chuck device 25 25. The cylinder telescopic rod 22, conductive rod 23, conductive roller 31 and conductive slide 32 are electrically connected together. Whether the conductive slide 32 is energized is controlled through the operation panel 16 on the electric control box 10, thereby controlling the electromagnetic chuck. Electromagnetic magnetic conversion of device 25.
所述下筒体为煤样放置筒体，下筒体包括煤样罐30与煤样臼29，煤样臼29配合套接于煤样罐30的外侧，煤样臼29高于煤样罐30，下筒体与中间筒 体26连接处设置有压环28，采用压环28卡接于煤样臼29上端口与中间筒体26之间，实现中间筒体26与下筒体的密封，煤样臼29内径与煤样罐30的外径相对应。The lower cylinder is a cylinder for placing coal samples. The lower cylinder includes a coal sample jar 30 and a coal sample mortar 29. The coal sample mortar 29 is cooperatively connected to the outside of the coal sample jar 30. The coal sample mortar 29 is higher than the coal sample jar. 30. Lower cylinder and middle cylinder A pressure ring 28 is provided at the connection of the body 26. The pressure ring 28 is clamped between the upper port of the coal sample mortar 29 and the middle cylinder 26 to achieve sealing between the middle cylinder 26 and the lower cylinder. The inner diameter of the coal sample mortar 29 is in contact with the coal. Corresponds to the outer diameter of the sample tank 30.
本发明还提供了一种测定气固耦合态煤岩强度试验方法，利用上述的测定气固耦合态煤岩强度试验装置实现，包括如下步骤；The present invention also provides a test method for measuring the strength of coal and rock in the gas-solid coupled state, which is implemented by using the above-mentioned test device for measuring the strength of coal and rock in the gas-solid coupled state, and includes the following steps;
步骤一，检查所述测定气固耦合态煤岩强度试验装置的气密性，具体步骤包括：先将制备好的煤样放置在下筒体中，再利用压环28实现密封；打开第一闸阀2，将高压气瓶1中的高压气体充入保压落锤装置9装有煤样的下筒体中，并利用增压泵3及稳压装置5达到实验所需最高压力，关闭第一闸阀2；保持6小时以上，观测压力是否有变化；若有变化，需对试验装置进行检测；若无变化，利用真空泵13对下筒体脱气抽真空，进行下一步实验；Step 1: Check the air tightness of the gas-solid coupled coal and rock strength test device. The specific steps include: first placing the prepared coal sample in the lower cylinder, and then using the pressure ring 28 to achieve sealing; opening the first gate valve 2. Fill the high-pressure gas in the high-pressure gas bottle 1 into the lower cylinder of the pressure-maintaining drop weight device 9 containing the coal sample, and use the booster pump 3 and the pressure stabilizing device 5 to reach the highest pressure required for the experiment, and close the first Gate valve 2; maintain it for more than 6 hours, and observe whether there is a change in pressure; if there is a change, the test device needs to be tested; if there is no change, use the vacuum pump 13 to degas and evacuate the lower cylinder, and proceed to the next step of the experiment;
步骤二，向保压落锤装置9装有煤样的下筒体中充入预定压力的甲烷气体CH4，具体步骤包括：利用真空泵13对下筒体脱气抽真空后，打开第一闸阀2，进行充气；通过数据采集器14将第一压力传感器4、第二压力传感器7、流量传感器8的数据传输至计算机15；保持24h以上，使煤样充分吸附气体，记录最终平衡压力，关闭第一闸阀2；Step 2: Fill the lower cylinder of the pressure-maintaining drop weight device 9 containing the coal sample with methane gas CH 4 of a predetermined pressure. The specific steps include: using the vacuum pump 13 to degas and evacuate the lower cylinder, and then open the first gate valve. 2. Inflate; transmit the data of the first pressure sensor 4, the second pressure sensor 7, and the flow sensor 8 to the computer 15 through the data collector 14; keep it for more than 24 hours to allow the coal sample to fully absorb the gas, record the final equilibrium pressure, and close first gate valve 2;
步骤三，煤岩强度测试，具体步骤包括：煤样吸附平衡后，操控电控箱10上的操作面板16进行落锤试验，测试在预定压力条件下煤岩强度；重复上述步骤一、步骤二，测试在不同气体压力条件下煤岩强度。Step 3: Test the strength of coal and rock. The specific steps include: after the coal sample is adsorbed and balanced, control the operation panel 16 on the electric control box 10 to perform a drop weight test to test the strength of the coal and rock under predetermined pressure conditions; repeat the above steps 1 and 2. , testing the strength of coal and rock under different gas pressure conditions.
可以理解的是，以上关于本发明的具体描述，仅用于说明本发明而并非受限于本发明实施例所描述的技术方案，本领域的普通技术人员应当理解，仍然可以对本发明进行修改或等同替换，以达到相同的技术效果；只要满足使用需要，都在本发明的保护范围之内。 It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or modified. Equivalent substitutions to achieve the same technical effect; as long as they meet the needs of use, they are all within the protection scope of the present invention.

Claims (9)

  1. 一种测定气固耦合态煤岩强度试验装置，其特征在于：包括高压气瓶、增压泵、稳压装置、保压落锤装置、真空泵以及高压胶管；所述高压气瓶的输出端通过高压胶管连接增压泵，增压泵的输出端通过高压胶管连接稳压装置，稳压装置的输出端通过高压胶管连接保压落锤装置的输入端，保压落锤装置的输出端通过高压胶管连接真空泵；所述保压落锤装置包括电控箱、重锤破碎筒，重锤破碎筒固定于电控箱底部，电控箱与重锤破碎筒之间电连接；所述重锤破碎筒包括上筒体、中间筒体、下筒体、磁感应气缸、电磁吸盘装置以及重锤，上筒体与中间筒体连通，中间筒体与下筒体连通，磁感应气缸一端设置于上筒体顶部，磁感应气缸上设置有气缸伸缩杆，气缸伸缩杆穿过上筒体进入中间筒体中，中间筒体中设置电磁吸盘装置，气缸伸缩杆的下部与电磁吸盘装置固定连接，电磁吸盘装置底部吸附连接重锤；电控箱与磁感应气缸之间电连接，稳压装置通过高压胶管与重锤破碎筒的下筒体连接，重锤破碎筒的下筒体通过高压胶管与真空泵连接。A test device for measuring the strength of coal and rock in a gas-solid coupling state, which is characterized by: including a high-pressure gas bottle, a booster pump, a pressure stabilizing device, a pressure-maintaining drop weight device, a vacuum pump and a high-pressure hose; the output end of the high-pressure gas bottle passes through The high-pressure hose is connected to the booster pump. The output end of the booster pump is connected to the voltage stabilizing device through the high-pressure hose. The output end of the voltage stabilizing device is connected to the input end of the pressure-maintaining drop weight device through the high-pressure hose. The output end of the pressure-maintaining drop weight device is connected through the high-pressure hose. The rubber hose is connected to the vacuum pump; the pressure-maintaining weight drop device includes an electric control box and a heavy hammer crushing barrel. The heavy hammer crushing barrel is fixed at the bottom of the electric control box. The electric control box and the heavy hammer crushing barrel are electrically connected; the heavy hammer crushing barrel The cylinder includes an upper cylinder, a middle cylinder, a lower cylinder, a magnetic induction cylinder, an electromagnetic chuck device and a weight. The upper cylinder is connected to the middle cylinder, and the middle cylinder is connected to the lower cylinder. One end of the magnetic induction cylinder is set on the upper cylinder. At the top, the magnetic induction cylinder is equipped with a cylinder telescopic rod. The cylinder telescopic rod passes through the upper cylinder and enters the middle cylinder. An electromagnetic suction cup device is installed in the middle cylinder. The lower part of the cylinder telescopic rod is fixedly connected to the electromagnetic suction cup device. The bottom of the electromagnetic suction cup device The weight is adsorbed and connected; the electric control box and the magnetic induction cylinder are electrically connected; the voltage stabilizing device is connected to the lower cylinder of the hammer crushing barrel through a high-pressure hose; and the lower cylinder of the weight crushing barrel is connected to the vacuum pump through a high-pressure hose.
  2. 根据权利要求1所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述高压气瓶与增压泵之间的高压胶管上连接有第一闸阀，增压泵与稳压装置之间的高压胶管上连接有第一压力传感器，稳压装置与保压落锤装置之间的高压胶管上依次连接有第二闸阀、第二压力传感器、流量传感器。A test device for measuring the strength of coal and rock in a gas-solid coupling state according to claim 1, characterized in that: a first gate valve is connected to the high-pressure hose between the high-pressure gas bottle and the booster pump, and the booster pump is connected to the stabilizer. A first pressure sensor is connected to the high-pressure hose between the pressure devices, and a second gate valve, a second pressure sensor, and a flow sensor are connected to the high-pressure hose between the pressure stabilizing device and the pressure-maintaining drop weight device in sequence.
  3. 根据权利要求2所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述保压落锤装置与真空泵之间的高压胶管上连接有第三闸阀，第一压力传感器、第二压力传感器、流量传感器均连接有数据采集器，数据采集器连接有计算机。A test device for measuring the strength of gas-solid coupled coal and rock according to claim 2, characterized in that: the high-pressure hose between the pressure-maintaining drop weight device and the vacuum pump is connected with a third gate valve, a first pressure sensor, The second pressure sensor and the flow sensor are both connected to a data collector, and the data collector is connected to a computer.
  4. 根据权利要求1所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述电控箱上设置有操作面板，操作面板安装于电控箱前侧箱壁上方，电控箱内部设置有控制电路；操作面板上设置有次数调节键、控制开关以及指示灯，次数调节键、控制开关以及指示灯均与控制电路相连，次数调 节键通过控制电路与重锤破碎筒内部的磁感应气缸电连接；电控箱通过控制电路还分别与增压泵、真空泵电连接。A test device for measuring the strength of gas-solid coupled coal and rock according to claim 1, characterized in that: the electric control box is provided with an operation panel, and the operation panel is installed above the front wall of the electric control box. There is a control circuit inside the box; the operation panel is equipped with frequency adjustment keys, control switches and indicator lights. The frequency adjustment keys, control switches and indicator lights are all connected to the control circuit. The joint key is electrically connected to the magnetic induction cylinder inside the heavy hammer crushing barrel through the control circuit; the electric control box is also electrically connected to the booster pump and vacuum pump respectively through the control circuit.
  5. 根据权利要求1所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述上筒体顶部设置有与磁感应气缸固定连接在一起的第一法兰盘，第一法兰盘连接于上筒体的筒口上，磁感应气缸固定于第一法兰盘的中心孔上，磁感应气缸上还设置有气缸端头，气缸端头固定连接于第一法兰盘中心处，气缸端头与气缸伸缩杆之间通过组合垫圈密封连接；上筒体与中间筒体之间设置有第二法兰盘，上筒体与中间筒体通过第二法兰盘连接，磁感应气缸的气缸伸缩杆经过第二法兰盘中心的通孔进入到中间筒体中。A test device for measuring the strength of gas-solid coupled coal and rock according to claim 1, characterized in that: the top of the upper cylinder is provided with a first flange fixedly connected to the magnetic induction cylinder, and the first flange is fixedly connected to the magnetic induction cylinder. The disk is connected to the mouth of the upper cylinder, and the magnetic induction cylinder is fixed on the center hole of the first flange. The magnetic induction cylinder is also provided with a cylinder end, and the cylinder end is fixedly connected to the center of the first flange. The cylinder end The head and the cylinder telescopic rod are sealed and connected through a combined gasket; a second flange is provided between the upper cylinder and the middle cylinder, and the upper cylinder and the middle cylinder are connected through the second flange. The cylinder of the magnetic induction cylinder telescopes The rod passes through the through hole in the center of the second flange and enters the intermediate cylinder.
  6. 根据权利要求1所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述上筒体内设置有用于控制电磁吸盘装置有磁性或无磁性的磁性变换控制件，磁性变换控制件包括导电杆、导电滚轮、导电滑道，位于气缸伸缩杆的两侧且关于气缸伸缩杆的中心对称连接有导电杆，气缸伸缩杆两侧的导电杆端部均连接有导电滚轮，位于上筒体内侧壁上竖直设置有分别与两个导电滚轮配合连接的导电滑道，导电滚轮通过气缸伸缩杆的带动可上、下滑动连接于导电滑道中，导电滑道与电控箱之间电连接。A test device for measuring the strength of gas-solid coupled coal and rock according to claim 1, characterized in that: the upper cylinder is provided with a magnetic conversion control part for controlling whether the electromagnetic chuck device is magnetic or non-magnetic, and the magnetic conversion control part is The components include conductive rods, conductive rollers, and conductive slides. The conductive rods are located on both sides of the cylinder telescopic rod and are connected symmetrically about the center of the cylinder telescopic rod. The ends of the conductive rods on both sides of the cylinder telescopic rod are connected to conductive rollers, which are located above The inner wall of the cylinder is vertically provided with conductive slides that are connected to two conductive rollers. The conductive rollers can slide up and down through the cylinder telescopic rod and are connected to the conductive slides. Between the conductive slides and the electric control box Electrical connection.
  7. 根据权利要求6所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述导电滑道包括导电铜片、有机玻璃板槽，有机玻璃板槽固定于上筒体内侧壁上，导电铜片固定卡接于有机玻璃板槽中。A test device for measuring gas-solid coupling state coal and rock strength according to claim 6, characterized in that: the conductive slideway includes a conductive copper sheet and a plexiglass plate groove, and the plexiglass plate groove is fixed on the inner wall of the upper cylinder On the top, the conductive copper sheet is fixedly clamped in the plexiglass plate groove.
  8. 根据权利要求1所述的一种测定气固耦合态煤岩强度试验装置，其特征在于：所述下筒体为煤样放置筒体，下筒体包括煤样罐与煤样臼，煤样臼配合套接于煤样罐的外侧，煤样臼高于煤样罐，下筒体与中间筒体连接处设置有压环，采用压环卡接于煤样臼上端口与中间筒体之间，实现中间筒体与下筒体的密封，煤样臼内径与煤样罐的外径相对应。A test device for measuring gas-solid coupling state coal and rock strength according to claim 1, characterized in that: the lower cylinder is a coal sample placement cylinder, and the lower cylinder includes a coal sample tank and a coal sample mortar, and the coal sample The mortar is sleeved on the outside of the coal sample tank. The coal sample mortar is higher than the coal sample tank. A pressure ring is provided at the connection between the lower cylinder and the middle cylinder. The pressure ring is used to snap between the upper port of the coal sample mortar and the middle cylinder. time to achieve sealing between the middle cylinder and the lower cylinder, and the inner diameter of the coal sample mortar corresponds to the outer diameter of the coal sample tank.
  9. 一种测定气固耦合态煤岩强度试验方法，其特征在于：包括如下步骤： A test method for measuring the strength of coal and rock in a gas-solid coupling state, which is characterized by: including the following steps:
    步骤一，检查权利要求1至8中任一项所述测定气固耦合态煤岩强度试验装置的气密性，具体步骤包括：先将制备好的煤样放置在下筒体中，再利用压环实现密封；打开第一闸阀，将高压气瓶中的高压气体充入保压落锤装置装有煤样的下筒体中，并利用增压泵及稳压装置达到实验所需最高压力，关闭第一闸阀；保持6小时以上，观测压力是否有变化；若有变化，需对试验装置进行检测；若无变化，利用真空泵对下筒体脱气抽真空，进行下一步实验；Step 1: Check the air tightness of the gas-solid coupled coal and rock strength test device according to any one of claims 1 to 8. The specific steps include: first placing the prepared coal sample in the lower cylinder, and then using pressure. ring to achieve sealing; open the first gate valve, fill the high-pressure gas in the high-pressure cylinder into the lower cylinder of the pressure-maintaining drop weight device containing the coal sample, and use the booster pump and pressure stabilizing device to reach the highest pressure required for the experiment. Close the first gate valve; keep it for more than 6 hours, and observe whether there is a change in pressure; if there is a change, the test device needs to be tested; if there is no change, use a vacuum pump to degas and evacuate the lower cylinder, and proceed to the next experiment;
    步骤二，向保压落锤装置装有煤样的下筒体中充入预定压力的甲烷气体CH4，具体步骤包括：利用真空泵对下筒体脱气抽真空后，打开第一闸阀，进行充气；通过数据采集器将第一压力传感器、第二压力传感器、流量传感器的数据传输至计算机；保持24h以上，使煤样充分吸附气体，记录最终平衡压力，关闭第一闸阀；Step 2: Fill the lower cylinder of the pressure-maintaining drop weight device containing the coal sample with methane gas CH 4 of a predetermined pressure. The specific steps include: using a vacuum pump to degas and evacuate the lower cylinder, open the first gate valve, and perform Inflate; transmit the data of the first pressure sensor, the second pressure sensor, and the flow sensor to the computer through the data collector; keep it for more than 24 hours to allow the coal sample to fully absorb the gas, record the final equilibrium pressure, and close the first gate valve;
    步骤三，煤岩强度测试，具体步骤包括：煤样吸附平衡后，操控电控箱上的操作面板进行落锤试验，测试在预定压力条件下煤岩强度；重复上述步骤一、步骤二，测试在不同气体压力条件下煤岩强度。 Step 3: Test the strength of coal and rock. The specific steps include: after the coal sample is adsorbed and balanced, control the operation panel on the electric control box to perform a drop weight test to test the strength of the coal and rock under predetermined pressure conditions; repeat the above steps 1 and 2 to test Coal and rock strength under different gas pressure conditions.
PCT/CN2023/101194 2022-07-19 2023-06-20 Test device and method for measuring strength of coal rock in gas-solid coupled state WO2024016926A1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005207790A (en) * 2004-01-20 2005-08-04 Kobe Steel Ltd Drop testing machine
CN101846607A (en) * 2010-01-26 2010-09-29 浙江华电器材检测研究所 Radial impact testing device for carbon fiber composite core rod
CN205580900U (en) * 2016-05-06 2016-09-14 重庆大学 Tightness coefficient measurement device that adsorbs coal body is pressed in area
CN106498946A (en) * 2016-12-26 2017-03-15 郑州游爱网络技术有限公司 A kind of low spatial drop hammer type automatic hydraulic piling machine
CN110007059A (en) * 2019-05-29 2019-07-12 河南理工大学 Bump breaks coal containing methane gas experimental system for simulating and broken coal experimental method
CN110095361A (en) * 2019-06-20 2019-08-06 中国矿业大学(北京) The device of coal body solid coefficient under a kind of measurement adsorbed state
CN211922755U (en) * 2020-04-07 2020-11-13 淮安市建筑工程质量检测中心有限公司 High-strain hammering system for foundation pile
CN115308056A (en) * 2022-07-19 2022-11-08 中煤科工集团沈阳研究院有限公司 Test device and method for measuring strength of gas-solid coupled coal rock

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005207790A (en) * 2004-01-20 2005-08-04 Kobe Steel Ltd Drop testing machine
CN101846607A (en) * 2010-01-26 2010-09-29 浙江华电器材检测研究所 Radial impact testing device for carbon fiber composite core rod
CN205580900U (en) * 2016-05-06 2016-09-14 重庆大学 Tightness coefficient measurement device that adsorbs coal body is pressed in area
CN106498946A (en) * 2016-12-26 2017-03-15 郑州游爱网络技术有限公司 A kind of low spatial drop hammer type automatic hydraulic piling machine
CN110007059A (en) * 2019-05-29 2019-07-12 河南理工大学 Bump breaks coal containing methane gas experimental system for simulating and broken coal experimental method
CN110095361A (en) * 2019-06-20 2019-08-06 中国矿业大学(北京) The device of coal body solid coefficient under a kind of measurement adsorbed state
CN211922755U (en) * 2020-04-07 2020-11-13 淮安市建筑工程质量检测中心有限公司 High-strain hammering system for foundation pile
CN115308056A (en) * 2022-07-19 2022-11-08 中煤科工集团沈阳研究院有限公司 Test device and method for measuring strength of gas-solid coupled coal rock

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