CN116298072A - Device and method for testing burning rate of stimulating agent for carbon dioxide cracker under high pressure - Google Patents

Abstract

The invention provides a test device and method for testing the burning rate of an exciting agent for a carbon dioxide cracker under high pressure, which includes a high-pressure-resistant visual module, a constant pressure valve, a pressure gauge, an ignition assembly, and a high-temperature-resistant transparent quartz charge tube; The high-pressure-resistant visual module is provided with a cavity, a base at the bottom, and a nozzle at the top, and a bursting disc safety valve and a pressure ring are arranged at the nozzle; the high-temperature-resistant transparent quartz charging tube is installed on the Inside the cavity, and the high-temperature-resistant transparent quartz charge tube is provided with multiple marking groups; the ignition assembly is connected to the bursting disc safety valve and the high-temperature-resistant transparent quartz charge tube; the bursting disc safety valve is provided with a liquid injection valve; the constant pressure valve and the pressure gauge are installed on the visual module, and the constant pressure valve is electrically connected to the pressure gauge. The invention can test the burning rate of the stimulating agent for the carbon dioxide cracker in the liquid carbon dioxide under different pressures, output the relational expression between the burning rate of the stimulating agent and the pressure, and grasp the law of the burning rate of the stimulating agent.

Description

Device and method for testing burning rate of stimulating agent for carbon dioxide cracker under high pressure

technical field

The invention relates to the technical field of _CO2 phase change, in particular to a test device and method for testing the burning rate of an excitation agent for a carbon dioxide cracker under high pressure.

Background technique

With the call for green environmental protection to build a beautiful home, the liquid carbon dioxide phase change blasting technology with no destructive vibration and a small proportion of dust has been widely used in large-scale ore mining, rapid and safe blasting, rock formation cracking, storage tank walls, etc. dredging and other fields. With the large-scale popularization and application of liquid carbon dioxide phase change blasting technology, the requirements for the working performance and precise control of this technology are getting higher and higher.

The main principle of the liquid carbon dioxide phase change fracturing technology is that after the controller is powered on, the ignition agent in the liquid storage tube is ignited by electricity, ignites the excitation agent, and the agent burns and releases heat and transfers heat to the liquid carbon dioxide to make it transform For supercritical carbon dioxide, when the pressure in the phase change tube reaches the rupture strength of the bursting disc, the bursting disc ruptures, and the high-pressure supercritical carbon dioxide instantly changes into gaseous carbon dioxide and rushes out of the storage tube. The volume of gaseous carbon dioxide is 500 to 600 times that of the same mass of liquid carbon dioxide, and the volume of carbon dioxide expands nearly 600 times in an instant. The high pressure generated during the continuous expansion of carbon dioxide gas diffuses to the surrounding at a very high speed, thereby causing damage to the surrounding medium .

It can be seen that the excitation agent is the initial energy source for the liquid carbon dioxide phase change blasting technology to do work. The burning speed of the excitation agent directly determines the speed of the built-up pressure in the liquid storage pipe, thus affecting the opening time of the bursting disc. For a single carbon dioxide cracker, if the agent is not burned out when the bursting disc is opened, its working ability will decrease; for large-scale multiple carbon dioxide cracker blasting, the opening time of the bursting disc will affect the timing of the blasting excitation If the two do not match, it will greatly reduce the blasting effect and affect the output. Therefore, it is necessary to accurately grasp the burning speed of the excitation agent, so as to grasp its influence on the pressure building time of the liquid storage pipe and the adjustment of the thickness of the bursting disc, so as to effectively improve the working performance and complete the precise control of the large-scale carbon dioxide explosion sequence.

The performance of the propellant is similar to that of black powder, and it shows different burning speeds under different pressure environments, and the burning speed increases exponentially as the pressure rises. Generally, a sealed detonator is used for testing to obtain a curve of burning rate versus pressure. However, when the stimulating agent is burned in liquid carbon dioxide, the heat generated will be absorbed by the liquid carbon dioxide, thereby affecting the burning rate. The relationship between the burning rate and the pressure change presented is inconsistent with the burning rate measured by the closed detonator, and it is difficult to directly apply it to engineering. instructing. Liquid carbon dioxide is directly filled in the airtight detonator, because the heat absorption of carbon dioxide will instantly generate a pressure of hundreds of megapascals, unless the wall thickness of the airtight eruptor is increased, an explosion accident will occur, and the airtight eruptor will be very heavy if the wall thickness is increased. loss of convenience.

Therefore, it is necessary to provide a test device specially for the burning rate of the stimulating agent used in the carbon dioxide cracker under high pressure, so as to test the burning rate efficiently, conveniently and safely.

Contents of the invention

In view of the above technical problems, the present invention provides a test device and method for testing the burning rate of the propellant for the carbon dioxide cracker under pressure, capable of testing the burning rate of the provocative reagent for the carbon dioxide cracker in liquid carbon dioxide under different pressures. By fitting the burning rate data of the stimulating agent under different pressures obtained from the test, the relationship between the burning rate of the stimulating agent and the pressure can be obtained, which provides guidance for the better application of the carbon dioxide cracker in the field of blasting.

The technical solution of the present invention is: a test device for the burning rate of the stimulating agent used in the carbon dioxide cracker under high pressure, which includes a high-pressure resistant visual module, and is characterized in that it also includes a constant pressure valve, a pressure gauge, an ignition assembly, and a high-temperature-resistant transparent quartz device. medicine tube;

A cavity for storing liquid carbon dioxide is provided in the high-pressure-resistant visual module, a base is provided at the bottom of the high-pressure-resistant visual module, and a nozzle communicating with the cavity is provided at the top, and at the nozzle A bursting disc safety valve is provided, and a pressure ring is provided on the top cover of the bursting disc safety valve; an observation window is provided on the axial wall of the visual module, and the charging tube is installed in the cavity , and the side of the charging tube facing the observation window is provided with a plurality of marking groups; the ignition assembly is connected to the bursting disc safety valve and the high temperature resistant transparent quartz charging tube; the bursting disc safety valve is provided with There is an injection valve for injecting liquid carbon dioxide into the cavity;

Both the constant pressure valve and the pressure gauge are installed on the visual module and communicate with the cavity, and the constant pressure valve is electrically connected with the pressure gauge.

Preferably, the top of the bursting disc type safety valve is provided with a cross groove capable of rupturing when the pressure is too high.

Preferably, the visual module further includes a container, a first sealing ring, a second sealing ring and a gland, the container includes a tube body, the bottom of the tube body is provided with the base, and the top is provided with the nozzle, The cavity is located inside the pipe body; the pipe body is provided with a window for installing an observation window, the second sealing ring is arranged between the observation window and the window, and the observation The window is fixed to the window; the pipe body is provided with an installation ring groove for installing the first sealing ring, and the bursting disc type safety valve is arranged on the first sealing ring.

Preferably, a clamping seat is provided on the inner bottom surface of the tube body, and the high-temperature-resistant transparent quartz charge tube and the clamping seat are fixed in a manner of clamping with a shaft hole.

Preferably, the window is subsided to form an installation platform, and the observation window is placed on the installation platform in an embedded manner. .

Preferably, an installation groove is formed by sinking inward from the installation table, and the second sealing ring is placed on the installation groove.

Preferably, the test device for the burning rate of the stimulating agent for the carbon dioxide cracker under high pressure further includes an air release valve, the air release valve is installed on the high pressure resistant visual module and communicates with the inside of the cavity.

Preferably, intervals between multiple marker groups form a time value.

The present invention also provides a method for testing by using a testing device for the burning rate of the propellant for a carbon dioxide cracker under high pressure, including:

1) Set the pressure value A of the liquid carbon dioxide in the high pressure resistant visual module to the constant pressure valve;

2) Fill liquid carbon dioxide into the high-pressure resistant visual module through the liquid injection valve to make the internal pressure reach the set value;

3) Set up the camera and align it with the charging tube at the position of the observation window, and turn on the camera to complete the debugging;

4) Igniting the ignition assembly, the ignition assembly ignites and excites the agent in the charge tube, the excitation agent transfers heat to the liquid carbon dioxide instantaneously, the pressure in the high-pressure resistant visual module instantly rises above the set value, and the constant pressure valve starts to work Keep the pressure inside the high pressure visual module within the set value range;

5) Calculation and analysis: when the excitation agent burns after being ignited by the ignition assembly, the combustion surface in the charge tube passes from top to bottom, and passes through multiple marker groups in turn to form a time parameter. According to the time parameter, the output is in the preset The burning rate of the stimulating agent when the pressure value is A;

6) Open the vent valve to empty the gas in the visual module, take out and replace the charge tube;

7) Set the pressure value B of the liquid carbon dioxide in the visual module;

Repeat steps 2)-step 6), and output the burning rate of the excitation agent when the preset pressure value is B;

Repeat step 1)-step 6) until the output of n preset pressure values for the excitation agent burning rate test;

8) Perform data fitting on the obtained pressures and corresponding burning rates under the n operating conditions, and obtain the relational expression between the burning rate and the confining pressure of the propellant for the carbon dioxide cracker. .

Preferably, in step 5), the interval between each two of the multiple marker groups is set as a, and the multiple marker groups form time t1-tm sequentially from top to bottom; the constant pressure valve is set so that the visual module The pressure inside is maintained at the set value and the time before opening and venting is t; respectively compare the values of t1-tm and t, and select a value greater than t; then divide a by the selected value greater than t, thus obtaining The burn rate of the energizing potion.

Compared with related technologies, the beneficial effects of the present invention are:

1. The test device for the burning rate of the stimulating agent for the carbon dioxide cracker under high pressure can test the burning rate of the stimulating agent for the carbon dioxide cracker in the liquid carbon dioxide under different pressures;

2. By fitting the burning rate data of the stimulating agent under different pressures obtained from the test, the relationship between the burning rate of the stimulating agent and the pressure can be obtained, which provides guidance for the better application of the carbon dioxide cracker in the field of blasting.

Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

Fig. 1 is the schematic diagram of the front view of the test device for the burning rate of the propellant for the carbon dioxide cracker under the high pressure provided by the present invention;

Fig. 2 is a schematic side view of Fig. 1;

FIG. 3 is a schematic diagram of a decomposition structure of a visual module;

FIG. 4 is a schematic top view of the visual module;

FIG. 5 is a schematic diagram of an internal sectional view of the visual module;

Fig. 6 is a schematic structural view of the container in Fig. 3;

Fig. 7 is a schematic view of the three-dimensional structure of the container in Fig. 3;

Fig. 8 is a schematic plan view of the safety valve in Fig. 3;

Fig. 9 is a three-dimensional schematic diagram of the safety valve in Fig. 3;

Fig. 10 is a schematic structural view of the charge tube in Fig. 1;

FIG. 11 is a schematic structural diagram of the ignition assembly in FIG. 1 .

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. For the convenience of description, if the words "up", "down", "left" and "right" appear in the following, it only means that the directions of up, down, left and right are consistent with the drawings themselves, and do not limit the structure.

As shown in Figure 1 and Figure 2, a test device for the burning rate of the excitant used in carbon dioxide crackers under high pressure provided by this embodiment includes a high-pressure resistant visual module 1 (hereinafter referred to as the visual module), a high-temperature resistant transparent quartz charge Pipe 2 (hereinafter referred to as charge pipe), constant pressure valve 3, air release valve 5, pressure gauge 6, control power supply 7, power supply line 8, signal line 10, pressure sensor 11 and ignition assembly 12.

The visual module 1 is provided with a cavity for storing liquid carbon dioxide, and a charge tube 2 for placing the provocative agent, combined with the use of high-speed photography to observe and calculate the burning rate of the provocative agent in the liquid carbon dioxide under a fixed pressure.

As shown in Figures 3 and 4, the visual module 1 includes a container 1-1, a first sealing ring 1-2, a bursting disc safety valve 1-3 (hereinafter referred to as the safety valve), a pressure ring 1-4, The second sealing ring 1-5, the fastener 1-7 and the gland 1-8. As shown in FIG. 6 , the container 1-1 includes a tube body 1-1-1, and the cavity is arranged in the tube body 1-1-1. As shown in Figure 6 and Figure 7, the window provided in the axial direction of the pipe body 1-1-1, the window is sequentially provided with a mounting platform 1-1-4 and a mounting recess that sinks into the cavity from the outside to the inside. Slot 1-1-5. Both the mounting table 1-1-4 and the mounting groove 1-1-5 are long rectangles adapted to the window. A plurality of mounting screw holes 1-1-6 are arranged between the mounting table 1-1-4 and the mounting groove 1-1-5. As shown in Figure 4, the part of the container 1-1 where the window is provided protrudes from the outside of the container 1-1, protrudes radially along the container 1-1, and forms a plane on the protruding outer end surface, which is beneficial to the observation window 1 -6 installation.

The bottom of the pipe body 1-1-1 is provided with a base 1-1-10, and the top is provided with a nozzle communicating with the cavity. The diameter of the base 1-1-10 is directly larger than the diameter of the pipe body 1-1-1, and plays a supporting role. The pipe body 1-1-1 is provided with a first interface 1-1-2 for installing a constant pressure valve 3 . In this embodiment, as shown in FIG. 1 , the number of the constant pressure valves 3 is two, and the number of the first interfaces 1 - 1 - 2 is correspondingly two.

As shown in Figures 1 and 6, the pipe body 1-1-1 is provided with a second interface 1-1-7 for installing a pressure gauge 6, and a third interface 1-1-7 for installing an air release valve 5. 1-8, and the fourth interface 1-1-9 for installing the pressure sensor 11.

As shown in Figure 1, Figure 3, Figure 6, and Figure 7, install the second sealing ring 1-5 in the installation groove 1-1-5, and then set the observation window 1-6 on the second sealing ring 1-5 and snapped into the installation groove 1-1-5, and the protruding outer edge of the installation groove 1-1-5 abuts against the edge of the observation window 1-6. Then put the gland 1-8 on the installation platform 1-1-4 and cover it on the observation window 1-6, and abut against the edge of the gland 1-8 through the protruding outer edge of the installation platform 1-1-4 edge. Finally, pass the fastener 1-7 through the through hole on the gland 1-8 and thread the mounting screw hole 1-1-6 to fix it. The observation windows 1-6 are high pressure resistant sapphire observation windows.

As shown in Figure 5 and Figure 7, an installation ring groove 1-1-11 is provided in the pipe body 1-1-1 adjacent to the nozzle, and the first installation ring groove 1-1-11 is provided with the first The sealing ring 1-2, and the safety valve 1-3 is arranged on the first sealing ring 1-2, and the sealing between the safety valve 1-3 and the cavity is realized through the first sealing ring 1-2. The upper end cover of the safety valve 1-3 is provided with a pressure ring 1-4.

As shown in Figure 5, the inner bottom surface of the tube body 1-1-1 is provided with a card seat 1-1-12, and the card seat 1-1-12 is provided with a card that is adapted to the charging tube 2. hole. The charging tube 2 is fixed to the clamping hole of the deck 1-1-12 in the manner of clamping the shaft hole. The card holder 1-1-12 protrudes upwards a distance from one end to form an effective fixed wall surface installed with the charge tube 2 to ensure that the charge tube 2 is in a straight state.

As shown in Figures 8 and 9, the safety valve 1-3 is provided with a first terminal 1-3-1, a second terminal 1-3-2, a liquid injection valve 1-3-3 and a cross mark Slots 1-3-4. The cross groove 1-3-4 is arranged in the middle of the safety valve 1-3. As shown in FIG. 11 , the ignition assembly 12 includes a drug head 12-1 and a first leg line 12-2 and a second leg line 12-3 branched from the drug head 12-1. As shown in FIG. 1 , the first leg 12-2 is connected to the first terminal 1-3-1, and the second leg 12-3 is connected to the second terminal 1-3-2. The liquid injection valve 1-3-3 communicates with the cavity of the visual module 1 .

The charge tube 2 is made of high temperature resistant transparent quartz material. As shown in FIG. 10 , a plurality of marking groups 2-1 are provided on the side of the charging tube 2 facing the observation window 1-6. As shown in FIG. 1 , after the charging tube 2 is installed on the cartridge 1 - 1 - 12 , the head 12 - 1 of the ignition assembly 12 extends into the upper end of the charging tube 2 . And the marking group 2-1 faces the observation window 1-6, which is beneficial to observe the burning position.

As shown in FIG. 1 and FIG. 2 , the constant pressure valve 3 is connected to a control power supply 7 through a power supply line 8 . The pressure gauge 6 is connected to the control power supply 7 through a signal line 10 . The pressure sensor 11, pressure gauge 6, constant pressure valve 3 and air release valve 5 are electrically connected.

Fill the visual module 1 with liquid carbon dioxide to make the pressure reach a certain set value. After the ignition assembly 12 is ignited and powered, the agent is instantly ignited, and the heat is transferred to the liquid carbon dioxide in the visual module 1, so that the pressure of the carbon dioxide rises. The internal pressure of the visual module 1 also rises instantaneously. Within a few milliseconds, the constant pressure valve 3 opens the air release valve 5 to release air, so that the internal pressure of the visual module 1 is maintained at the set value. When the initial pressure setting in the visual module 1 is high and the burning rate of the agent is extremely fast, the pressure rise rate in the visual module 1 may be greater than the deflation rate of the constant pressure valve 3 . When the pressure is higher than the predetermined value of the safety valve 3, the safety valve 1-3 is broken from the cross groove 1-3-4, and the high-pressure gas is released to ensure that the visual module 1 will not be guaranteed to ensure the safety of the test.

The present invention adopts the above-mentioned method for testing the combustion rate of the propellant for the carbon dioxide cracker under high pressure, comprising the following steps:

1) The first terminal 1-3-1 and the second terminal 1-3-2 reserved on the safety valve 1-3 and the side facing the cavity are respectively connected to the first leg 12-2 and the second Footline 12-3.

2) Place the pipe body 1-1-1 on the level ground, place the first sealing ring 1-2 in the installation ring groove 1-1-11, and then install the safety valve 1-3 at the mouth of the pipe, and then press the The ring 1-4 is put into the nozzle, the pressure ring 1-4 is threadedly connected with the nozzle, and the pressure ring 1-4 is tightened so that the pressure ring 1-4 squeezes the first sealing ring 1-2 to keep the upper part of the visual module 1 sealed sex.

3) Fill the propellant tube 2 with the excitation agent according to the fixed density; extend the propellant tube 2 from the window and fix it in the clamping hole of the deck 1-1-12, and make the propellant tube 2 in a straight state.

4) Place the second sealing ring 1-5 on the installation groove 1-1-5 of the window, and then place the observation window 1-6. The observation window 1-6 and the second sealing ring 1-5 fit together to prevent the metal from The observation window 1-6 of the high-pressure sapphire is directly attached to the tube body 1-1 and is destroyed. Afterwards, the gland 1-8 is placed on the observation window 1-6, and then fixed by the fastener 1-7.

5) Install the pressure sensor 11 on the fourth interface 1-1-9 and complete the debugging.

6) Install a constant pressure valve 3 on the first interface 1-1-2, install a pressure gauge 6 on the second interface 1-1-7, and install an air release valve 5 on the third interface 1-1-8.

7) Connect the signal line 10 between the pressure gauge 6 and the control power supply 7 , and connect the power supply line 8 between the control power supply 7 and the constant pressure valve 3 . Set the pressure starting value of the control power supply 7 to a pressure value A (in this embodiment, A=1mpa).

8) Fill the visual module 1 with liquid carbon dioxide through the liquid injection valve 1-3-3 to make the internal pressure reach 1mpa.

9) Set up the camera and aim at the charging tube 2 at the position of the observation window 1-6, and turn on the camera to complete the debugging.

10) energize the first terminal 1-3-1 and the second terminal 1-3-2, ignite the ignition assembly 12, the drug head 12-1 ignites and ignites the medicament in the charge tube 2, and energizes the medicament Instantaneously transfer heat to the liquid carbon dioxide, so that the pressure in the visual module 1 is instantly increased to reach and exceed 1mpa. At this time, the pressure gauge 6 obtains the internal pressure of the pipe body 1-1-1, and transmits the signal to the control power supply 7 through the signal line 10, and the control power supply 7 controls the constant pressure valve 3 to open and deflate instantaneously through the power supply line 8, and the constant pressure The valve 3 starts to work to keep the pressure in the visual module 1 within the preset value range;

11) Calculation and analysis: when the excitation agent burns after being ignited by the ignition assembly 12, the combustion surface in the charge tube 2 passes from top to bottom, passing through multiple marking groups 2-1 in turn to form time parameters. Such as: the number of marking groups 2-1 is 5, and the distance between each two is a, and the five marking groups 2-1 form time t1, t2, t3, t4, t5 sequentially from top to bottom; set constant The pressure valve 3 keeps the pressure in the visual module 1 at a preset value and the time before starting the deflation valve 5 is t; compare the values of t1-tm and t respectively, and select a value greater than t (such as obtaining t3 . Then divide a by the selected ones greater than t3, t4, and t5 to obtain the burning rates v3, v4, and v5 of the stimulating agent, and take the average value v to obtain the burning rate of the stimulating agent under the pressure A.

12) Open the air release valve 5 to empty the gas in the visual module 1, take out and replace the charge tube 2.

13) Set the pressure value B of the liquid carbon dioxide in the visual module 1 (in this embodiment, B=5mpa).

Repeat steps 8)-step 12), and output the burning rate of the excitation agent when the preset pressure value is B;

Repeat step 7)-step 12) until the test of the burning rate of the propellant under the working conditions of 10mpa, 15mpa, 20mpa, 25mpa, and 30mpa.

14) Perform data fitting on the obtained pressures under the 7 operating conditions and the corresponding burning rate v, and obtain the relational expression between the burning rate and the confining pressure of the propellant used in the carbon dioxide cracker.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, are all included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. a test device for the combustion rate of the stimulating agent for a carbon dioxide cracker under high pressure, comprising a high pressure resistant visual module (1), characterized in that it also includes a constant pressure valve (3), a pressure gauge (6), an ignition assembly ( 12) and high temperature resistant transparent quartz charge tube (2); The high pressure resistant visual module (1) is provided with a cavity for storing liquid carbon dioxide, the bottom of the high pressure resistant visual module (1) is provided with a base (1-1-10), and the top is provided with the A nozzle connected to the cavity, a bursting disc safety valve (1-3) is arranged at the nozzle, and a pressure ring (1-4) is set on the top of the bursting disc safety valve (1-3) ); the axial wall of the visual module (1) is provided with an observation window (1-6), the charge tube (2) is installed in the cavity, and the charge tube (2) faces One side of the observation window (1-6) is provided with a plurality of marking groups (2-1); the ignition assembly (12) is connected to a bursting disc safety valve (1-3) and a high temperature resistant transparent quartz charge tube (2); The bursting disc type safety valve (1-3) is provided with a liquid injection valve (1-3-3) for injecting liquid carbon dioxide into the cavity; Both the constant pressure valve (3) and the pressure gauge (6) are installed on the visual module (1) and communicate with the cavity, and the constant pressure valve (3) is electrically connected to the pressure gauge (6). 2. the test device of the burning rate of the propellant for the carbon dioxide cracker under high pressure according to claim 1, characterized in that, the top of the bursting disc type safety valve (1-3) is provided with a device capable of bursting when the pressure is too high cross grooves (1-3-4). 3. The test device for the burning rate of the stimulating agent for the carbon dioxide cracker under high pressure according to claim 1, characterized in that, the visual module (1) also includes a container (1-1), a first sealing ring (1 -2), second sealing ring (1-5) and gland (1-8), described container (1-1) comprises pipe body (1-1-1), and described pipe body (1-1- 1) The base (1-1-10) is set at the bottom, the nozzle is set at the top, and the cavity is located inside the tube body (1-1-1); the tube body (1-1 -1) There is a window for installing the observation window (1-6), the second sealing ring (1-5) is arranged between the observation window (1-6) and the window, and passes through the gland (1-8) Fix the observation window (1-6) to the window; the pipe body (1-1-1) is provided with an installation ring groove (1) for installing the first sealing ring (1-2) -1-11), the bursting disc type safety valve (1-3) is arranged on the first sealing ring (1-2). 4. the test device of the burning rate of the stimulating agent for the carbon dioxide cracker under high pressure according to claim 3, characterized in that, the inner bottom surface of the pipe body (1-1-1) is provided with a deck (1-1 -12), the high-temperature-resistant transparent quartz charge tube (2) is fixed to the deck (1-1-12) in a way that the shaft hole is clamped. 5. the test device of the burning rate of the stimulating agent for the carbon dioxide cracker under high pressure according to claim 3, characterized in that, the settlement at the window forms an installation platform (1-1-4), and the observation window (1-1-4) 6) Place it on the installation platform (1-1-4) in an embedded manner. 6. The test device for the burning rate of the propellant for the carbon dioxide cracker under high pressure according to claim 5, characterized in that, an installation groove (1) is formed by inward settlement from the installation table (1-1-4) -1-5), the second sealing ring (1-5) is placed on the installation groove (1-1-5). 7. The test device for the burning rate of the stimulating agent for the carbon dioxide cracker under high pressure according to claim 1, characterized in that, it also includes a deflation valve (5), and the deflation valve (5) is installed on the high pressure resistant The visual module (1) communicates with the inside of the cavity. 8. The device for testing the burning rate of propellants for carbon dioxide crackers under high pressure according to claim 1, characterized in that the intervals of a plurality of marker groups (2-1) form time values. 9. A method for testing with a test device for the combustion rate of the propellant for a carbon dioxide cracker under high pressure as claimed in any one of claims 1-8, characterized in that it comprises: 1) Set the pressure value A of the liquid carbon dioxide in the high pressure resistant visual module (1) to the constant pressure valve (3); 2) Fill liquid carbon dioxide into the high pressure resistant visual module (1) through the liquid injection valve (1-3-3) to make the internal pressure reach the set value; 3) Set up the camera and align it with the charging tube (2) at the position of the observation window (1-6), and turn on the camera to complete the debugging; 4) Ignite the ignition assembly (12), the ignition assembly (12) ignites and excites the agent in the charge tube (2), the excitation agent transfers heat to the liquid carbon dioxide instantaneously, and the pressure in the high pressure resistant visual module (1) The momentary rise exceeds the set value, and the constant pressure valve (3) starts to work to keep the pressure in the high-pressure resistant visual module (1) within the set value range; 5) Calculation and analysis: when the excitation agent burns after being ignited by the ignition assembly (12), the combustion surface in the charge tube (2) passes from top to bottom, passing through multiple marking groups (2-1) in sequence Form a time parameter, and output the burning rate of the excitation agent when the preset pressure value is A according to the time parameter; 6) Open the air release valve (5) to empty the gas in the visual module (1), take out and replace the charge tube (2); 7) Set the pressure value B of the liquid carbon dioxide in the visual module (1); Repeat steps 2)-step 6), and output the burning rate of the excitation agent when the preset pressure value is B; Repeat step 1)-step 6) until the output of n preset pressure values for the excitation agent burning rate test; 8) Perform data fitting on the obtained pressures and corresponding burning rates under the n operating conditions, and obtain the relational expression between the burning rate and the confining pressure of the propellant for the carbon dioxide cracker. 10. testing method according to claim 9, is characterized in that, in step 5) in, setting the interval between every two in a plurality of marker groups (2-1) is a, a plurality of marker groups (2-1) -1) Time t1-tm is sequentially formed from top to bottom; set the constant pressure valve (3) to keep the pressure in the visual module (1) at the set value and the time before opening and venting is t; respectively compare For the values of t1-tm and t, select a value greater than t; then divide a by the selected value greater than t to obtain the burning rate of the stimulating agent.

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