Carbon dioxide blasting testing device and testing method thereof

Abstract

The invention discloses a carbon dioxide blasting testing device and a testing method thereof. Relates to the technical field of carbon dioxide blasting rock breaking mechanism research. The device comprises a carbon dioxide cracking device assembly, a multi-module experiment platform, a data acquisition system, a medium temperature capturing assembly and a multi-channel synchronous control assembly; the simulated blast hole and carbon dioxide fracturing device assembly is used for being clamped on the adjustable base bracket; the data acquisition system is used for acquiring internal pressure and temperature changes of the fracturing device pipe body and displaying various data monitoring results; the medium temperature capturing assembly is used for capturing the medium temperature change at the orifice of the simulated blast hole and displaying each data monitoring result; the multi-channel synchronous controller is connected with the high-energy exploder through a data line, the data acquisition system is connected with the multi-channel synchronous controller through a data line to acquire signal indication starting to be acquired, the structure is simple, use is convenient, and a theoretical basis with practical significance is provided for liquid carbon dioxide phase change explosion field practice.

Description

Technical Field

[0001] The invention relates to the technical field of research on the mechanism of rock breaking by carbon dioxide blasting, and in particular to a carbon dioxide blasting test device and a test method thereof. Background Art

[0002] Liquid carbon dioxide phase change rock breaking technology is a typical physical blasting technology. With the rise of the concept of carbon dioxide resource utilization, it has gradually been promoted in the fields of urban infrastructure, coal mine disaster management, slope formation protection, etc. However, the theoretical research on liquid carbon dioxide phase change rock breaking technology lags behind the reality of field practice and has not been fundamentally changed. There is still no clear and unified understanding of the mechanism of liquid carbon dioxide phase change fracturing rock mass. It is urgent to use new testing means and testing methods to clarify the impact load characteristics during the phase change of carbon dioxide fracturing device, so as to provide a practical theoretical basis for the field practice of liquid carbon dioxide phase change blasting. Summary of the invention

[0003] The purpose of the present invention is to provide a carbon dioxide explosion testing device and a testing method thereof to solve the problems existing in the above-mentioned prior art. The device has a simple structure and is easy to use, and provides a theoretical basis with practical significance for the on-site practice of liquid carbon dioxide phase change explosion.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a carbon dioxide explosion test device, comprising: a carbon dioxide fracturing device assembly, a multi-module experimental platform, a data acquisition system, a medium temperature capture assembly and a multi-channel synchronous control assembly, wherein the carbon dioxide fracturing device assembly comprises a fracturing device filling head, a fracturing device pipe body, a fracturing device energy venting head, an excitation agent, a first sealing pad, a second sealing pad, a constant pressure shearing piece and a reserved installation port for a sensor, wherein the fracturing device filling head is connected to the fracturing device pipe body by threads, wherein the first sealing pad is arranged between the fracturing device filling head and the fracturing device pipe body, wherein the fracturing device pipe body is connected to the fracturing device energy venting head by threads, wherein the second sealing pad and the constant pressure shearing piece are arranged between the fracturing device pipe body and the fracturing device energy venting head, wherein the excitation agent is connected to the fracturing device filling head by a conductive element, wherein the first sealing pad is arranged between the first sealing pad and the second sealing pad, wherein the second sealing pad and the constant pressure shearing piece are arranged between the second sealing pad and the constant pressure shearing piece, wherein the excitation agent is connected to the fracturing device filling head by a conductive element, wherein the first sealing pad is arranged between the first sealing pad and the second sealing pad, wherein the second sealing pad and the constant pressure shearing piece are arranged between the second ... The multi-module experimental platform comprises an adjustable base support and a simulated blast hole, wherein the simulated blast hole and the carbon dioxide fracturing device assembly are used to be clamped on the adjustable base support; the data acquisition system is used to collect the pressure and temperature changes inside the fracturing device tube body and display the monitoring results of each data; the medium temperature capturing component is used to capture the medium temperature changes at the simulated blast hole orifice and display the monitoring results of each data; the multi-channel synchronous control component comprises a high-energy detonator and a multi-channel synchronous controller, wherein the multi-channel synchronous controller is connected to the high-energy detonator through a data line, and the high-energy detonator is connected to the external conductive element of the fracturing device filling head through a detonation line, and the data acquisition system is connected to the multi-channel synchronous controller through a data line to obtain a signal indication for starting acquisition.

[0006] Preferably, it also includes a liquid carbon dioxide filling system, which fills liquid carbon dioxide into the fracturing device tube body through the filling channel on the fracturing device filling head and prevents leakage of high-pressure liquid carbon dioxide in the tube body through the leak-stopping element.

[0007] Preferably, the adjustable base bracket includes a bottom frame, a plurality of fracturing device tube body fixing and clamping devices and a plurality of simulated blast hole fixing and clamping devices, the top of each of the fracturing device tube body fixing and clamping devices is used to clamp and fix the fracturing device tube body, and the bottom is used to be connected to the bottom frame, the top of each of the simulated blast hole fixing and clamping devices is used to clamp and fix the simulated blast hole, and the bottom is used to be connected to the bottom frame.

[0008] Preferably, the fracturing device fixing and clamping device comprises an upper clamping steel plate and a bottom support platform, the upper clamping steel plate and the bottom support platform are connected by a high-strength lead screw, a fracturing device tube body locking nut is provided at the center of the upper clamping steel plate to clamp the fracturing device tube body and the bottom support platform, and the bottom support platform is used to be connected to the bottom frame.

[0009] Preferably, the simulated blast hole fixing and clamping device is a triangular frame sliding base, the triangular frame sliding base is used to be sleeved on the outside of the simulated blast hole, and the triangular frame sliding base is connected to the bottom frame.

[0010] Preferably, the multi-module experimental platform also includes an experimental line protection device, which is used to sort out and install various types of data cables.

[0011] Preferably, the simulated blast hole is a seamless steel pipe, the length of the simulated blast hole is not less than 40 cm, and the wall thickness of the simulated blast hole is not less than 6 mm.

[0012] Preferably, the data acquisition system includes a pressure sensor assembly, an overpressure sensor assembly, a temperature sensor assembly, a DC regulated power supply, a signal amplifier, a data collector and a first display; the fracturing device tube body is provided with a plurality of first reserved mounting openings and second reserved mounting openings; the simulated blasthole is provided with a plurality of second reserved mounting holes and a plurality of third reserved mounting holes; the first reserved mounting opening is used for mounting the pressure sensor assembly; the second reserved mounting opening is used for mounting the temperature sensor assembly; the third reserved mounting hole is used for mounting the overpressure sensor assembly; the pressure sensor assembly, the overpressure sensor assembly and the temperature sensor assembly are connected to the DC regulated power supply through a data line; the DC regulated power supply is connected to the signal amplifier by signal; the signal amplifier is connected to the data collector by signal; the data collector is connected to the first display by signal; and the data collector is connected to the multi-channel synchronous controller by signal.

[0013] Preferably, the medium temperature capturing component comprises a high-performance high-speed infrared camera and a second display, the viewing angle of the high-performance high-speed infrared camera is perpendicular to the direction of the simulated blast hole, and the high-performance high-speed infrared camera is signal-connected to the second display.

[0014] The present invention also provides a testing method using the carbon dioxide explosion testing device as described in any one of the above items, comprising the following steps:

[0015] S1: According to the test requirements, the corresponding pressure sensor and temperature sensor are installed into the first reserved installation opening and the second reserved installation opening on the fracturing device pipe body;

[0016] S2: Assemble the CO2 fracturing device assembly, fill the CO2 fracturing device assembly through the liquid CO2 filling system according to the test requirements, and check the air tightness and filling quality;

[0017] S3: Install the carbon dioxide fracturing device assembly assembled and filled in S1 and S2 into the fracturing device fixing and clamping device, and select a suitable simulated blasthole according to the test requirements and install it into the simulated blasthole fixing and clamping device, adjust the position of the fracturing device energy release outlet and the simulated blasthole position, and install the overpressure sensor and the temperature sensor on the third reserved installation port and the second reserved installation port on the simulated blasthole according to the experimental requirements;

[0018] S4: After completing all the installations in S3, the fracturing device fixing clamping device and the simulated blasthole fixing clamping device are locked on the bottom bracket of the multi-module platform through the limiting elements, and the bracket is fixed to the experimental ground through expansion screws;

[0019] S5: Connect the pressure sensors, temperature sensors and overpressure sensors in S1 and S3 to the data acquisition system through data cables, and sort out and install various data cables through line protection devices;

[0020] S6: According to the test requirements, select a suitable shooting lens, build a medium temperature capture component, adjust various parameters and spatial positions of the high-performance high-speed infrared camera, and ensure that the high-performance high-speed infrared camera can capture the medium temperature changes at the mouth of the simulated blast hole;

[0021] S7: Connect the high-energy initiator with the conductive element of the fracturing device filling head in S2, connect the multi-channel synchronous controller with the data acquisition system, and connect the multi-channel synchronous controller with the high-performance high-speed infrared camera through the multi-channel synchronous controller and the signal transmission line, and conduct a test before detonating the fracturing device to ensure that the data acquisition system and the high-performance high-speed infrared camera start to record relevant data when the carbon dioxide fracturing device assembly is detonated;

[0022] S8: After completing all kinds of installation and commissioning work of S1-S7, detonate the carbon dioxide fracturing device assembly, collect test data, and complete the collection of internal and external pressure and temperature data of the carbon dioxide fracturing device through the display and data processing system, and determine the corresponding relationship between the pressure in the tube and the shock wave in the blast hole and the temperature in the tube and the temperature in the blast hole.

[0023] Compared with the prior art, the present invention has achieved the following technical effects:

[0024] The present invention provides a carbon dioxide blasting test device and a test method thereof. By constructing a multi-module experimental platform, multiple types of fracturing devices can be tested, and experimental parameters can be preset according to test requirements. At the same time, internal and external pressure data and internal and external temperature data in the whole process of fracturing device blasting are collected, which is helpful to improve the synchronization between the blasting capacity of the fracturing device and the rock breaking.

[0025] Furthermore, the present invention can simultaneously monitor the overpressure characteristics and temperature change characteristics inside the blasthole by setting a simulated blasthole and a reserved window for sensors on the simulated blasthole. At the same time, a separately set medium temperature capture component can display the temperature flow characteristics of the gas in the blasthole in a visual manner, clarify the corresponding relationship between the temperatures inside and outside the pipe under different uncoupling coefficients, and help to correctly establish the force-temperature-damage theoretical model in the rock breaking process of carbon dioxide blasting impact load. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of the carbon dioxide explosion testing device provided by the present invention;

[0028] In the figure: 1. carbon dioxide fracturing device assembly; 2. first reserved installation opening; 3. fracturing tube fixing and clamping device; 4. bottom bracket of fracturing device fixing and clamping device; 5. simulated blast hole; 6. simulated blast hole fixing and clamping device; 7. bottom bracket of simulated blast hole fixing and clamping device; 8. second reserved installation opening; 9. bottom frame; 10. fixing bolts; 11. line protection device; 12. multi-channel synchronous controller; 13. high-energy detonator; 14. detonating circuit; 15. data line; 16. DC regulated power supply; 17. signal amplifier; 18. data acquisition device; 19. first display; 20. second display; 21. high-performance high-speed infrared camera; 22. limit element. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a carbon dioxide explosion testing device and a testing method thereof to solve the problems existing in the above-mentioned prior art. The device has a simple structure and is easy to use, and provides a theoretical basis with practical significance for the on-site practice of liquid carbon dioxide phase change explosion.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1

[0033] This embodiment provides a carbon dioxide explosion test device, such as Figure 1 As shown, it includes: a carbon dioxide fracturing device assembly 1, a multi-module experimental platform, a data acquisition system, a medium temperature capture assembly and a multi-channel synchronous control assembly. The carbon dioxide fracturing device assembly 1 includes a fracturing device filling head, a fracturing device tube body, a fracturing device energy release head, an excitation agent, a first sealing gasket, a second sealing gasket, a constant pressure shear piece and a sensor reserved installation port. The fracturing device filling head is connected to the fracturing device tube body by threads, a first sealing gasket is arranged between the fracturing device filling head and the fracturing device tube body, the fracturing device tube body is connected to the fracturing device energy release head by threads, a second sealing gasket and a constant pressure shear piece are arranged between the fracturing device tube body and the fracturing device energy release head, and the excitation agent is connected to the fracturing device filling head through a conductive element; the multi-module experimental platform includes an adjustable base bracket and a simulated blasthole 5, the simulated blasthole 5 and the carbon dioxide fracturing device assembly 1 are used for clamping and being adjustable on the base bracket; the data acquisition system is used for collecting the pressure and temperature changes inside the fracturing device tube body and displaying the monitoring results of each data; the medium temperature capturing assembly is used for capturing the medium temperature changes at the orifice of the simulated blasthole 5 and displaying the monitoring results of each data; the multi-channel synchronous control assembly comprises a high-energy detonator 13 and a multi-channel synchronous controller 12, the multi-channel synchronous controller 12 is connected to the high-energy detonator 13 through a data line 15, the high-energy detonator 13 is connected to the external conductive element of the fracturing device filling head through an initiation line 14, and the data acquisition system is connected to the multi-channel synchronous controller 12 through a data line 15 to obtain a signal indication for starting acquisition.

[0034] In a preferred solution of this embodiment, it also includes a liquid carbon dioxide filling system, which fills liquid carbon dioxide into the fracturing device tube body through the filling channel on the fracturing device filling head, and prevents leakage of high-pressure liquid carbon dioxide in the tube body through the leak-stopping element.

[0035] In a preferred solution of the present embodiment, the adjustable base support includes a bottom frame 9, a plurality of fracturing tube body fixing and clamping devices and a plurality of simulated blast hole fixing and clamping devices 6, the top of each fracturing tube body fixing and clamping device is used to clamp and fix the fracturing tube body, and the bottom is used to connect with the bottom frame 9, the top of each simulated blast hole fixing and clamping device 6 is used to clamp and fix the simulated blast hole 5, and the bottom is used to connect with the bottom frame 9, the adjustable base support can be fixed to the ground in various forms, the fracturing tube body fixing and clamping device 3 and the simulated blast hole fixing and clamping device 6 are connected to the base support through rails, and the horizontal adjustable range is 0-2000mm. The bottom frame 9 is formed into an integral structure by welding steel pipes. The steel pipes are preferably made of alloy. The steel pipe size specifications are selected to have an outer diameter of 45 mm and a wall thickness of 3.5 mm or larger. The higher frame weight can ensure the stability of the entire experimental system under the energy discharge state of the fracturing pipe. The overall size of the frame is 2 m long and 0.9 m wide, and it is suitable for pressure test data collection of 38, 42, 51, 73, 95 and other types of fracturing devices.

[0036] In a preferred solution of the present embodiment, the fracturing device fixing and clamping device 3 comprises an upper clamping steel plate and a bottom support platform, the upper clamping steel plate and the bottom support platform are connected by a high-strength lead screw, a fracturing device tube body locking nut is provided at the center of the upper clamping steel plate to clamp the fracturing device tube body and the bottom support platform, and the bottom support platform is used to be connected to the bottom frame 9 through the bottom bracket 4 of the fracturing device fixing and clamping device.

[0037] In a preferred solution of the present embodiment, the simulated blast hole fixing and clamping device 6 is a triangular frame sliding base, which is used to be mounted on the outside of the simulated blast hole 5. The triangular frame sliding base is connected to the bottom frame 9 through the bottom bracket 7 of the simulated blast hole fixing and clamping device. The tripod frame is welded to the top of the bottom bracket 7 of the simulated blast hole fixing and clamping device. The tripod is an equilateral triangle with a side length of 270 mm. It is equipped with 3 sets of adjusting nuts to fix the simulated blast hole 5 with a diameter less than 160 mm.

[0038] In a preferred solution of this embodiment, the multi-module experimental platform further includes an experimental line protection device 11 , which is used to sort out and install various types of data cables 15 .

[0039] In a preferred solution of this embodiment, the simulated blasthole 5 is a seamless steel pipe, the length of the simulated blasthole 5 is not less than 40 cm, and the wall thickness of the simulated blasthole 5 is not less than 6 mm, so as to ensure that a large deformation occurs during the blasting process of the carbon dioxide fracturing device to affect the test accuracy.

[0040] In a preferred solution of the present embodiment, the data acquisition system includes a pressure sensor assembly, an overpressure sensor assembly, a temperature sensor assembly, a DC regulated power supply 16, a signal amplifier 17, a data collector 18 and a first display 19. The fracturing device tube body is provided with a plurality of first reserved installation openings 2 and second reserved installation openings 8. The simulated blasthole 5 is provided with a plurality of second reserved installation holes and a plurality of third reserved installation holes. The first reserved installation opening 2 is used to install the pressure sensor assembly, the second reserved installation opening 8 is used to install the temperature sensor assembly, and the third reserved installation hole is used to install the overpressure sensor assembly. The pressure sensor assembly, the overpressure sensor assembly and the temperature sensor assembly are connected to the DC regulated power supply 16 through a data line 15. The DC regulated power supply 16 is connected to the signal amplifier 17 by signal. The signal amplifier 17 is connected to the data collector 18 by signal. The data collector 18 is connected to the first display 19 by signal. The data collector 18 is connected to the multi-channel synchronous controller 12 by signal.

[0041] In a preferred solution of this embodiment, the medium temperature capture component includes a high-performance high-speed infrared camera 21 and a second display 20, the viewing angle of the high-performance high-speed infrared camera 21 is perpendicular to the direction of the simulated blast hole 5, and the high-performance high-speed infrared camera 21 is signal-connected to the second display 20.

[0042] Embodiment 2

[0043] This embodiment also provides a testing method using the carbon dioxide explosion testing device as described in any one of the first embodiments, comprising the following steps:

[0044] This implementation method takes the corresponding relationship between the pressure inside and outside the tube, the corresponding relationship between the temperature, and the temperature flow law of the medium in the blast hole as an example to test the 51-type fracturing device under the condition of constant pressure shear piece thickness of 3mm, filling mass of 0.85kg, filling pressure of 8MPa, excitation agent mass of 140g, and simulated blast hole diameter of 75mm. The specific steps are as follows:

[0045] S1: According to the test requirements, install 4 pressure sensors into the first reserved installation port 2 of the first row of the fracturing device, and install 4 temperature sensors into the second reserved installation port 2 of the second row of the fracturing device. Wrap raw tape around the sensor threads to ensure the air tightness of the fracturing device. The first reserved installation port and the second reserved installation port of the sensor that does not need to be installed are sealed by tightening nuts. Sufficient raw tape still needs to be wrapped around the nuts to ensure the overall air tightness.

[0046] S2: Assemble the carbon dioxide fracturing device assembly 1. According to the test requirements, connect 140g of the stimulating agent to the filling head of the fracturing device through the wire. Select a 3mm constant pressure shearing piece, match the first sealing gasket and the second sealing gasket, and assemble the carbon dioxide fracturing device assembly 1 that meets the test requirements. The filling system is preset with the filling conditions of 8MPa and 0.85kg. Inject the liquid carbon dioxide into the liquid storage tube in the carbon dioxide fracturing device assembly 1 through the filling head.

[0047] S3: Install the carbon dioxide fracturing device assembly 1 assembled and filled in S1 and S2 into the fracturing device fixing and clamping device 3. At the same time, according to the test requirements, select a simulated blasthole 5 with a diameter of 75 mm and install it into the simulated blasthole fixing and clamping device 6. By adjusting and tightening the locking nuts on the fracturing device fixing and clamping device 3 and the simulated blasthole fixing and clamping device 6, ensure that the axis of the fracturing device assembly 1 and the simulated blasthole are at the same level and height. In addition, the energy release outlet in the carbon dioxide fracturing device assembly 1 and the third reserved installation opening in the simulated blasthole 5 are at the same axis. An overpressure sensor is installed at the third reserved installation opening reserved for the simulated blasthole on one side of the simulated blasthole 5, and a temperature sensor is installed at the second reserved installation opening 8 on the other side.

[0048] S4: After all installations in S3 are completed, the fracturing device fixing and clamping device 4 and the simulated blasthole fixing and clamping device 7 are locked on the bottom frame 9 through the limiting element 22, and the bottom frame 9 is fixed to the experimental ground through the expansion screws 10;

[0049] S5: Connect the pressure sensors, temperature sensors and overpressure sensors installed in S1 and S3 to other data acquisition systems through data lines 15, debug the DC regulated power supply 16, signal amplifier 17, data collector 18, and sort out and install various data lines through the line protection device 11;

[0050] S6: According to the test requirements, select a lens with a temperature range of -20-184°C, build a medium temperature capture system, adjust the internal temperature calibration module of the high-performance high-speed infrared camera 21 to -20-184°C, arrange the medium temperature capture system 15m horizontally and vertically away from the simulated blasthole 5, adjust the tripod position so that the simulated blasthole 5 is in the middle of the image of the second display 20, and ensure that the high-performance high-speed infrared camera can capture the medium temperature change at the mouth of the simulated blasthole 5;

[0051] S7: Connect the high-energy initiator 13 and the initiation line 14 of the filling head of the fracturing device in S2, connect the multi-channel synchronous controller 12 and the data acquisition device 18, and connect the multi-channel synchronous controller 12 and the high-speed infrared camera 21 through the multi-channel synchronous controller 12 and the signal transmission line, and perform a test before detonating the fracturing device to ensure that the data acquisition device 18 and the second display device 20 start recording relevant data at the same time as the detonation of the fracturing device;

[0052] S8: After completing all kinds of installation and debugging work of S1-S7, the detonation signal and data acquisition signal are transmitted through the multi-channel synchronous controller 12, and the test data are collected. Through the first display 19, the second display 20 and the data processing system, the collection of the internal and external pressure and temperature data of the carbon dioxide fracturing device is completed, and the corresponding relationship between the pressure in the pipe and the shock wave in the blast hole and the temperature in the pipe and the temperature in the blast hole is determined.

[0053] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A carbon dioxide explosion test device, characterized in that: include: A carbon dioxide fracturing device assembly, the carbon dioxide fracturing device assembly comprising a fracturing device filling head, a fracturing device tube body, a fracturing device energy venting head, an excitation agent, a first sealing pad, a second sealing pad, a constant pressure shearing piece and a reserved installation port for a sensor, the fracturing device filling head is connected to the fracturing device tube body by threads, the first sealing pad is arranged between the fracturing device filling head and the fracturing device tube body, the fracturing device tube body is connected to the fracturing device energy venting head by threads, the second sealing pad and the constant pressure shearing piece are arranged between the fracturing device tube body and the fracturing device energy venting head, and the excitation agent is connected to the fracturing device filling head through a conductive element; A multi-module experimental platform, the multi-module experimental platform comprising an adjustable base support and a simulated blast hole, the simulated blast hole and the carbon dioxide fracturing device assembly are used to be clamped on the adjustable base support; A data acquisition system, the data acquisition system is used to collect the pressure and temperature changes inside the fracturing device tube and display the monitoring results of each data; A medium temperature capture component, which is used to capture the medium temperature change at the simulated blasthole orifice and display various data monitoring results; as well as A multi-channel synchronous control component, the multi-channel synchronous control component includes a high-energy initiator and a multi-channel synchronous controller, the multi-channel synchronous controller is connected to the high-energy initiator via a data line, the high-energy initiator is connected to the external conductive element of the fracturing device filling head via an initiation line, and the data acquisition system is connected to the multi-channel synchronous controller via a data line to obtain a signal indication for starting acquisition.

2. The carbon dioxide explosion test device according to claim 1, characterized in that: It also includes a liquid carbon dioxide filling system, which fills liquid carbon dioxide into the fracturing device tube body through the filling channel on the fracturing device filling head and prevents leakage of high-pressure liquid carbon dioxide in the tube body through the leak-stopping element.

3. The carbon dioxide explosion test device according to claim 2, characterized in that: The adjustable base bracket includes a bottom frame, a plurality of fracturing device tube fixing and clamping devices and a plurality of simulated blast hole fixing and clamping devices, the top of each of the fracturing device tube fixing and clamping devices is used to clamp and fix the fracturing device tube, and the bottom is used to connect with the bottom frame, the top of each of the simulated blast hole fixing and clamping devices is used to clamp and fix the simulated blast hole, and the bottom is used to connect with the bottom frame.

4. The carbon dioxide explosion test device according to claim 3, characterized in that: The fracturing device fixing and clamping device comprises an upper clamping steel plate and a bottom support platform, wherein the upper clamping steel plate and the bottom support platform are connected by a high-strength lead screw, and a fracturing device tube body locking nut is provided at the center of the upper clamping steel plate to clamp the fracturing device tube body and the bottom support platform, and the bottom support platform is used to be connected to the bottom frame.

5. The carbon dioxide explosion test device according to claim 4, characterized in that: The simulated blast hole fixing and clamping device is a triangular frame sliding base, and the triangular frame sliding base is used to be sleeved on the outside of the simulated blast hole, and the triangular frame sliding base is connected to the bottom frame.

6. The carbon dioxide explosion test device according to claim 5, characterized in that: The multi-module experimental platform also includes an experimental line protection device, which is used to sort out and install various types of data lines.

7. The carbon dioxide explosion testing device according to claim 6, characterized in that: The simulated blast hole is a seamless steel pipe, the length of the simulated blast hole is not less than 40 cm, and the wall thickness of the simulated blast hole is not less than 6 mm.

8. The carbon dioxide explosion testing device according to claim 7, characterized in that: The data acquisition system includes a pressure sensor assembly, an overpressure sensor assembly, a temperature sensor assembly, a DC regulated power supply, a signal amplifier, a data collector and a first display. The fracturing device tube body is provided with a plurality of first reserved installation openings and a second reserved installation opening, and the simulated blasthole is provided with a plurality of second reserved installation holes and a plurality of third reserved installation holes. The first reserved installation opening is used to install the pressure sensor assembly, the second reserved installation opening is used to install the temperature sensor assembly, and the third reserved installation hole is used to install the overpressure sensor assembly. The pressure sensor assembly, the overpressure sensor assembly and the temperature sensor assembly are connected to the DC regulated power supply through a data line, the DC regulated power supply is connected to the signal amplifier by signal, the signal amplifier is connected to the data collector by signal, the data collector is connected to the first display by signal, and the data collector is connected to the multi-channel synchronous controller by signal.

9. The carbon dioxide explosion testing device according to claim 8, characterized in that: The medium temperature capture component includes a high-performance high-speed infrared camera and a second display. The viewing angle of the high-performance high-speed infrared camera is perpendicular to the direction of the simulated blasthole, and the high-performance high-speed infrared camera is connected to the second display signal.

10. A testing method using the carbon dioxide explosion testing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: According to the test requirements, the corresponding pressure sensor and temperature sensor are installed into the first reserved installation opening and the second reserved installation opening on the fracturing device pipe body; S2: Assemble the CO2 fracturing device assembly, fill the CO2 fracturing device assembly through the liquid CO2 filling system according to the test requirements, and check the air tightness and filling quality; S3: Install the carbon dioxide fracturing device assembly assembled and filled in S1 and S2 into the fracturing device fixing and clamping device, and select a suitable simulated blasthole according to the test requirements and install it into the simulated blasthole fixing and clamping device, adjust the position of the fracturing device energy release outlet and the simulated blasthole position, and install the overpressure sensor and the temperature sensor on the third reserved installation port and the second reserved installation port on the simulated blasthole according to the experimental requirements; S4: After completing all the installations in S3, the fracturing device fixing clamping device and the simulated blasthole fixing clamping device are locked on the bottom bracket of the multi-module platform through the limiting elements, and the bracket is fixed to the experimental ground through expansion screws; S5: Connect the pressure sensors, temperature sensors and overpressure sensors in S1 and S3 to the data acquisition system through data cables, and sort out and install various data cables through line protection devices; S6: According to the test requirements, select a suitable shooting lens, build a medium temperature capture component, adjust various parameters and spatial positions of the high-performance high-speed infrared camera, and ensure that the high-performance high-speed infrared camera can capture the medium temperature changes at the mouth of the simulated blast hole; S7: Connect the high-energy initiator with the conductive element of the fracturing device filling head in S2, connect the multi-channel synchronous controller with the data acquisition system, and connect the multi-channel synchronous controller with the high-performance high-speed infrared camera through the multi-channel synchronous controller and the signal transmission line, and conduct a test before detonating the fracturing device to ensure that the data acquisition system and the high-performance high-speed infrared camera start to record relevant data when the carbon dioxide fracturing device assembly is detonated; S8: After completing all kinds of installation and commissioning work of S1-S7, detonate the carbon dioxide fracturing device assembly, collect test data, and complete the collection of internal and external pressure and temperature data of the carbon dioxide fracturing device through the display and data processing system, and determine the corresponding relationship between the pressure in the tube and the shock wave in the blast hole and the temperature in the tube and the temperature in the blast hole.

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