Multi-parameter detection device and method for propellant slurry

Abstract

The invention discloses a multi-parameter verification device and method for propellant slurry, and the device comprises two workbenches; the explosion-proof wall is arranged between the two workbenches; the multi-parameter experimental device is placed at the top of the left side workbench; the thermal imager is placed at the top of the left workbench and located on one side of the multi-parameter experimental device; according to the invention, firstly, the pressure safety threshold value of a certain propellant slurry is obtained through the experimental device, and then the propellant slurry is selected for combined application of all the parts, so that the test of the spraying angle of the slurry under different pressures, the test of the spraying angle of the slurry under different temperatures and the test of the residual amount of the slurry under different contraction angles can be realized; and meanwhile, the temperature field change of the pipeline when the propellant slurry flows under different parameters can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-parameter verification of slurry, and in particular to a multi-parameter verification device and method for propellant slurry. Background Art

[0002] The casting process of composite propellant is relatively complex, and the requirements of each process such as process, material, equipment, and personnel are different. In addition, due to industry barriers, advanced civilian technologies cannot be introduced, and relevant information cannot be made public for the need of confidentiality, which leads to the inability to share the research content of each propellant manufacturer. The standards for process parameter experiments in the casting process of propellant slurry have not been established. When conducting research, each manufacturer mainly designs experimental devices according to its own needs, with a high degree of non-standard customization and strong specialization of each experimental device, and a general multi-parameter verification experimental device has not been formed.

[0003] Propellant slurry casting is a crucial process in the propellant production process, which will directly affect the final state of the propellant. At present, the methods for studying the flow field change and process parameters in the vacuum casting process of propellant mainly include simulation and experiment. The simulation method can analyze the parameter details in the slurry casting process and is convenient for optimizing the casting process. However, due to the influence of factors such as simulation models, simulation environments, and slurry composition deviations during simulation, it is difficult to simulate the real situation of slurry flow, usually with large deviations. In actual use, the simulation trend is generally adopted, and the simulated values are only for reference by experimental personnel. In order to accurately obtain the flow characteristics of the slurry and continuously improve the simulation process, the experimental method is essential. Propellant slurries all belong to energetic materials. How to safely simulate the real situation of slurry flow to obtain different parameters of propellant slurry has important guiding significance for propellant production and formulation research. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above deficiencies of the prior art, and provide a multi-parameter verification device and method for propellant slurry, which can realize highly flexible detection of multiple parameters through small-equivalent charging, and at the same time ensure the safety of experimental personnel.

[0005] The technical problems solved by the present invention are realized by the following technical solutions:

[0006] A multi-parameter detection device for propellant slurry, comprising:

[0007] Workbenches, and there are two workbenches provided;

[0008] An explosion-proof wall, which is arranged between the two workbenches, and the explosion-proof wall is provided with an observation window;

[0009] Multi-parameter experimental device, the multi-parameter experimental device is placed on the top of the left workbench;

[0010] Thermal imager, the thermal imager is placed on the top of the left workbench and is located on one side of the multi-parameter experimental device;

[0011] Mold temperature controller, the mold temperature controller is placed on one side of the left workbench; air compressor, the air compressor is placed on the other side of the left workbench;

[0012] The multi-parameter experimental device includes a connecting seat. A cartridge column is installed on the upper part of the connecting seat. The cartridge column includes a cylinder body, a hose joint connected to the lower port of the cylinder body, and a thread connected to the outer wall of the upper port of the cylinder body. The upper port of the cartridge column is detachably connected to the locking cap through the thread. There is an air inlet at the upper end of the locking cap for connecting to the air compressor; A pressing assembly is installed in the middle of the connecting seat for pressing the hose installed at the hose joint to prevent the medicine slurry from flowing out. There is a medicine receiving tray at the lower part of the connecting seat for receiving the medicine slurry discharged from the hose. The medicine receiving tray is placed on top of a high-precision electronic scale; The cylinder wall is a solid structure or a hollow structure; The lower end of the cylinder body is connected to the hose joint through a contraction angle; The mold temperature controller is connected to the circulating water inlet nozzle and the circulating water outlet nozzle on the outer wall of the cartridge column with a hollow structure of the cylinder wall;

[0013] The pressing assembly includes a pressing cylinder on one side of the hose and a baffle on the other side of the hose that cooperates with the pressing cylinder;

[0014] The pressing assembly further includes a hose clamp for pressing the hose to prevent the medicine slurry from flowing out of the hose before the pressing cylinder presses. The hose clamp is detachably installed on the hose; There are a first rotary valve and a second rotary valve connected to the air compressor on the right workbench. The other end of the first rotary valve is connected to the locking cap, and the other end of the second rotary valve is connected to the pressing cylinder.

[0015] A pressing plate for pressing the locking cap is also installed on the upper part of the connecting seat. The pressing plate is fixed to the upper part of the connecting seat through a screw and a bolt; There are two pressing plates, which are symmetrically installed on both sides of the locking cap.

[0016] The hose is detachably fixed at the bottom of the multi-functional cartridge column and extends downward; The circulating water outlet nozzle is located at the upper part, and the circulating water inlet nozzle is located at the lower part.

[0017] It further includes a control system. The control system is installed on the top of the right workbench and includes two rotary valves, the first rotary valve and the second rotary valve. The first rotary valve controls the pressurization of the cartridge column, and the second rotary valve controls the forward and backward movement of the pressing cylinder; An air pipe, the control system controls the air flow of the pressing cylinder and the air compressor through the air pipe.

[0018] A multi-parameter detection method for propellant slurry is verified using the multi-parameter detection device as described above. First, measure the pressure safety threshold of a certain propellant slurry, and then select this propellant slurry to conduct tests on the slurry injection angle under different pressures, the slurry injection angle under different temperatures, and the residual amount of the slurry under different contraction angles. At the same time, obtain the temperature field change of the pipeline when the propellant slurry flows under different parameters.

[0019] A multi-parameter detection method for propellant slurry is verified using the multi-parameter detection device as described above.

[0020] Step 1: The steps for measuring the pressure safety threshold of the propellant slurry are as follows

[0021] A1: Prepare n cartridge columns with a solid structure for the cylinder wall;

[0022] A2: Take the first cartridge column, and the pressure value P of the cartridge column is the rated pressure A of the air compressor;

[0023] A3: Connect a hose at the hose joint of the cartridge column and fix it with a hose clamp. Before the experiment, clamp the upper-middle part of the hose with a hose clip. Put 20 ± 5 g of slurry covering the bottom contraction angle into the cartridge column, install the locking cap on the cartridge column. During the experiment, control the pressing cylinder to press the hose through the second rotary valve, and remove the hose clip;

[0024] A4: By adjusting the pressure regulating gauge of the air compressor, set the pressurized pressure value = P. Rotate the first rotary valve to pressurize the slurry, keep the pressure for 0.5 - 2 min, quickly rotate the second rotary valve to open the pressing cylinder, and let the airflow at this pressure continuously scour for 50 ± 10 s. Observe whether the slurry is ignited under the continuous airflow scour, and record the temperature change values of the cartridge column and the hose at the same time;

[0025] A5: If the slurry is not ignited, it is determined that the pressure safety threshold M of this slurry is greater than A, and stop the detection;

[0026] A6: If the slurry is ignited, take the second cartridge column, lower the pressure, and the pressure value P of the cartridge column = A - a; repeat steps A3 and A4; if the slurry is not ignited, it is determined that the pressure safety threshold M of this slurry is the current pressure value P = A - a, and stop the detection;

[0027] A7: If the slurry is ignited, take the third cartridge column, lower the pressure, and the pressure value P of the cartridge column = A - 2*a; repeat steps A3 and A4; if the slurry is not ignited, it is determined that the pressure safety threshold M of this slurry is the current pressure value P = A - 2*a, and stop the detection; a = 0.1 - 0.2 Mpa;

[0028] And so on, until the slurry is not ignited when detecting the nth cartridge column. At this time, the pressure P = A - (n - 1)*a is the pressure safety threshold M of the slurry;

[0029] Step 2: The steps for detecting the injection angle of the propellant slurry under different pressures are as follows

[0030] B1: Prepare multiple cartridge columns with solid cylinder walls, and one cartridge column corresponds to one pressure value; Before the experiment, it is necessary to measure the distance from the lower end of the hose to the grid plate in advance, and the distance should be no less than 100 mm. The distance is set according to the principle that the slurry is not ejected from the grid plate;

[0031] B2: Take the first cartridge column, and the pressure value P1 of the cartridge column is the pressure safety threshold M of the slurry;

[0032] B3: Place the grid plate for injection angle detection in the medicine receiving tray. Connect the hose at the hose joint of the cartridge column and fix it with a hose clamp. Before the experiment, clamp the upper and middle parts of the hose with a hose clip. Fill the cartridge column with the slurry, install the locking cap on the cartridge column. During the experiment, control the pressing cylinder to press the hose through the rotary valve 2, and remove the hose clip; Before the experiment, detect the diameter Φ 2 of the hose and the distance L between the hose and the grid plate; The slurry filled in the cartridge column is 100±10 g;

[0033] B4: By adjusting the pressure regulating gauge on the air compressor, set the pressurized pressure value = P1. Rotate the rotary valve 1 to pressurize the slurry, keep the pressure for 0.5 - 2 minutes. Rotate the rotary valve 2 to open the pressing cylinder, and the slurry starts to flow. Record the weight increase rate of the slurry through a high-precision electronic scale, and record the temperature change value of the cartridge column and the hose through an infrared thermal imager. After the experiment, measure the maximum envelope diameter Φ1 of the slurry injection on the grid plate. After the experiment, calculate the injection angle through the formula , and complete the test of the injection angle of the propellant slurry under the current pressure setting value;

[0034] B5: Take the second cartridge column, lower the pressure, and the pressure value P1 of the cartridge column is M - a;

[0035] Repeat steps B3 and B4, and so on, until the injection angle test of the propellant slurry is completed under the pressure value P1 = M - (n - 1)*a for the nth cartridge column; a = 0.1 - 0.2 Mpa;

[0036] Step 3: The steps for detecting the injection angle of the propellant slurry under different temperatures are as follows

[0037] C1: Prepare multiple cartridge columns, and one cartridge column corresponds to one temperature. The hollow structure of the cylinder wall of the cartridge column forms a water jacket layer. The circulating water enters the water jacket layer through the circulating water inlet nozzle and then flows out through the circulating water outlet nozzle;

[0038] Conduct the test of the injection angle of the propellant slurry at different temperatures. This verification involves temperature parameters. Set the same pressure, and the temperatures are set to 35°C, 40°C, 45°C, 50°C, 55°C, and 60°C. The pressure can be set to the same value. The pressurization pressure is set to 0.2 Mpa according to the pressurization casting pressure value in the actual production of the product; select the cartridge column with the corresponding angle according to the actual bottom angle of the hopper of the manufacturer; without special requirements, generally select the cartridge column with an angle of 80 degrees;

[0039] C2: Repeat step B3;

[0040] C3: By adjusting the temperature controller on the mold temperature machine, set the required temperature T = 35°C, turn on the circulating water, keep warm for 8 - 10 minutes, open the pressing cylinder by rotating the second rotary valve, the slurry starts to flow, record the increasing speed of the slurry weight through a high-precision electronic scale, record the temperature change values of the cartridge column and the hose through an infrared thermal imager, and after the experiment, measure the diameter Φ of the slurry injection on the grid plate 1 , calculate the injection angle through the formula in step B4, and complete the test of the injection angle of the propellant slurry at this temperature;

[0041] C4: And so on, repeat steps C2 and C3 until the nth cartridge column is taken to complete the test of the injection angle of the propellant slurry at the temperature T = 35+(n - 1)*5°C; T ≤ 60°C;

[0042] Step Four: The steps for conducting the test of the residual amount of the propellant slurry under the cartridge columns with different shrinkage angles are as follows

[0043] D1: Prepare multiple cartridge columns with different shrinkage angles; this verification does not involve temperature parameters, the barrel wall of the cartridge column is a solid structure, set the pressure value P2 less than M during the experiment to ensure the flow rate of the propellant slurry, the pressure in this step is set to 0.2 Mpa according to the pressurization casting pressure value in the actual production of the product, and take the first cartridge column;

[0044] D2: Connect a hose at the hose joint of the cartridge column and fix it with a hose clamp. Before the experiment, clamp the upper and middle part of the hose with a hose clip, fill the cartridge column with the slurry, install the locking cap on the cartridge column, and control the pressing cylinder to press the hose through the second rotary valve during the experiment, and remove the hose clip;

[0045] D3: By adjusting the pressure regulating gauge on the air compressor, set the pressurization pressure value P2, rotate through the first rotary valve to pressurize the slurry, keep the pressure for 0.5 - 2 min, open the pressing cylinder by rotating the second rotary valve, the slurry starts to flow until the value on the high-precision electronic scale no longer changes, remove the cartridge column, weigh its weight values before and after the test, and the difference is the residual amount of the slurry. At the same time, record the temperature change values of the cartridge column and the hose, and complete the test of the residual amount of the propellant slurry at this shrinkage angle;

[0046] D4: Repeat steps D2 and D3 by analogy until the nth cartridge column is taken to complete the propellant slurry residual test at different contraction angles.

[0047] The temperature field monitoring data of the thermal imager in steps one to four are exported and sorted to obtain the temperature field changes when the propellant slurry flows under different parameters.

[0048] At present, the detection of the residual amount in the silo during the propellant pouring process mainly relies on empirical values. This device can flexibly replace different cartridge columns, and can conduct experimental research on the residual amount in the silo for different contraction angles and various parameters, providing a basis for determining the production pouring amount. The current mainstream safety threshold research is basically aimed at the characteristics of the slurry itself, such as impact threshold, friction threshold, electrostatic threshold, thermal threshold, etc., and has not studied the actual pouring process of the propellant.

[0049] The current parameter detection device for propellant slurry is mainly based on single parameter detection, and there is no device for combined research of propellant slurry pouring parameters under a multi-parameter complex system. In actual work, slurry pouring is the result of comprehensive combination of multiple parameters. At present, there is no relevant device to study the mutual influence relationship between its multiple parameters, and only the influence relationship between one or two parameters has been studied. The single-parameter research device is relatively simple. When studying multiple parameters, it is necessary to comprehensively consider the influence relationship of various parameters of the propellant and the experimental device needs to be more flexible to be compatible with different parameters, different types of slurries, and different scenarios. It is much more difficult to implement than a single-parameter device. The size of the propellant injection angle is related to the slurry model (different viscosity), contraction angle, slurry temperature, pressurization pressure, etc. This experimental device can simultaneously verify the influence of the above-mentioned parameter changes on the slurry injection angle. This device can use a small amount of propellant slurry to study the safety threshold of the pouring process to ensure the safety of production parameters. The present invention conducts a combined study on the above parameters, which has the characteristics of comprehensiveness and flexibility.

[0050] The present invention has the following beneficial effects:

[0051] Through the combined design of various components, the following parameter verification is achieved:

[0052] 1. It can realize the test of the injection angle of the slurry under different pressures. Through the test, the injection angle of the slurry under different pressures can be obtained, providing parameter guidance for mass production equipment;

[0053] 2. Test the injection angle of slurry at different temperatures. Through the test, the injection angle of slurry at different temperatures can be obtained, providing suitable temperature parameters for mass production of slurry;

[0054] 3. Test the residual amount of slurry under different contraction angles. Through the test, the residual amount of slurry under different hopper contraction angles can be obtained, providing parameter guidance for the design of the hopper;

[0055] 4. Detect the instantaneous vacuum-breaking safety threshold of the propellant slurry (i.e., the pressure safety threshold test). Through the experimental device, it can be obtained at what pressure parameters the slurry of different formulations will have the risk of ignition;

[0056] 5. Detect the temperature field change of the propellant slurry when flowing under different parameters, mainly detecting the change of the temperature field under different flow velocities of the slurry. Brief Description of the Drawings

[0057] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0058] Figure 1 It is a schematic top view of the structure of the present invention;

[0059] Figure 2 It is a schematic diagram of the structure of the present invention;

[0060] Figure 3 It is a schematic diagram of the structure of the multi-parameter experimental device of the present invention;

[0061] Figure 4 It is a schematic diagram of the structure of the circulating water inlet interface and the circulating water outlet interface of the present invention;

[0062] Figure 5 It is a schematic diagram of the structure of the multi-functional cartridge column of the present invention;

[0063] Figure 6 It is a cross-sectional view of the cartridge column of the present invention;

[0064] Figure 7 For Figure 3 Schematic diagram of the measurement parameters of the device.

[0065] In the figure: 100, workbench; 200, explosion-proof wall; 300, multi-parameter experimental device; 310, connecting seat; 320, locking cap; 330, pressing plate; 350, cartridge column; 351, water jacket layer; 352, thread; 353, hose joint; 354, contraction angle; 355, circulating water inlet interface; 356, circulating water outlet interface; 360, hose; 370, pressing cylinder; 380, high-precision electronic scale; 390, medicine receiving tray; 400, thermal imager; 500, mold temperature controller; 600, air compressor; 700, control system; 800, air pipe. Detailed Embodiments

[0066] In order to make the technical means, creative features, achieved objectives and effects realized by the present invention easy to understand, the present invention will be further described below with reference to specific illustrations.

[0067] Refer to Figures 1-6 A multi-parameter verification device for propellant slurry shown in the figure, comprising: a workbench 100, two workbenches 100 are provided, which mainly play the role of storing control components; an explosion-proof wall 200, the explosion-proof wall 200 is arranged between the two workbenches 100, which mainly plays the role of isolating personnel from equipment; a multi-parameter experimental device 300, the multi-parameter experimental device 300 is detachably installed on the top of the left workbench 100; a thermal imager 400, the thermal imager 400 is detachably installed on the top of the left workbench 100 and is located on one side of the multi-parameter experimental device 300, which mainly plays the role of detecting the temperature change of the multi-parameter experimental device and can generate a temperature change curve at the same time; a mold temperature controller 500, the mold temperature controller 500 is placed on one side of the left workbench 100, which mainly plays the role of providing hot water circulation; an air compressor 600, the air compressor 600 is placed on the other side of the left workbench 100, which mainly plays the role of providing gas pressurization.

[0068] Among them, when in use, slurry is added into the multi-parameter experimental device 300, and the air compressor 600 is relied on to provide the effect of air pressure pressurization for the multi-parameter experimental device 300. The air compressor 600 is connected to the pressing cylinder 370 and the locking cap 320 in the multi-parameter experimental device 300 through air pipes and air pipe joints. The pressing cylinder is controlled by the rotary valve II 701 of the control system, and the cartridge column is pressurized by the rotary valve I 700 of the control system. The mold temperature controller 500 provides hot water for the multi-parameter experimental device 300, drives the hot water circulation, and detects the temperature change of the multi-parameter experimental device through the thermal imager 400 during the experiment of the multi-parameter experimental device 300, and can generate a temperature change curve at the same time for the observation of experimental personnel.

[0069] Among them, relying on the combined design of each component, the detection of the spray angle of different models of propellant slurry, the detection of the thermal safety value of propellant slurry, the detection of the limit spray angle of propellant slurry, the detection of the instantaneous vacuum-breaking safety threshold of propellant slurry, and the detection of the temperature field change when propellant slurry flows under different parameters can be realized;

[0070] Among them, the setting of the explosion-proof wall 200 can avoid casualties of experimental personnel when the multi-parameter experimental device 300 catches fire and improve the safety of experimental personnel.

[0071] In some embodiments of the present invention, refer to Figure 3As shown in the figure, the multi-parameter experimental device 300 includes: a connecting seat 310, which is placed on the top of the workbench 100 and mainly serves to support and install various components; a detachable locking cap 320 is located on the top of the connecting seat; there are two pressing plates 330, which are installed on the outside of the locking cap 320 and are used to press the locking cap; a cartridge column 350, and the multi-functional cartridge column 350 is detachably fixed to the bottom of the locking cap 320 and mainly serves to store the slurry; a hose 360, which is detachably fixed to the bottom of the multi-functional cartridge column 350 and extends downward to prevent the slurry from leaking; a pressing cylinder 370, which is installed in the middle of the connecting seat 310 and is used to press the hose 360, and cooperates with the hose 360 to seal the slurry. The hose 360 is placed between the baffles 311, the baffles 311 and the pressing cylinder 370 are fixed on the connecting seat 310, and the piston of the pressing cylinder 370 extends to press the hose 360 against the baffle 311, and the hose deforms to seal the slurry.

[0072] The control system mainly consists of two manual rotary valves. One controls the movement of the pressing cylinder - rotary valve two 701, and the other controls the ventilation and pressurization of the cartridge column 350 - rotary valve one 700. During the experiment, the middle and lower parts of the hose 370 are clamped tightly with a hose clamp 361, an equivalent amount of propellant slurry covering the bottom contraction angle is placed into the cartridge column 350, and the locking cap 320 is installed on the cartridge column 350. During the experiment, the pressing cylinder is controlled by the rotary valve two 701 to press the hose 370 tightly, the hose clamp 361 is removed, the locking cap 320 is pressed with a pressing plate, and an air pipe is connected at the air pipe joint of the locking cap 320. By adjusting the controllable pressure regulating gauge to reach the set pressure, and opening the pressing cylinder 370 through the manual rotary valve, the slurry starts to flow downward; among them, through the combined design of various components, it is possible to realize the test of the slurry injection angle under different pressures, the test of the slurry injection angle under different temperatures, the detection of the injection angle under different contraction angles 354, the detection of the injection angle of different types of propellant slurries, the detection of the instantaneous vacuum-breaking safety threshold of the propellant slurry, the detection of the temperature field change when the propellant slurry flows under different parameters, etc.

[0073] Among them, the multi-functional cartridge column 350 is a processed part, and relevant parameters are designed according to the experimental requirements.

[0074] Among them, the pressing cylinder 370 is used to press the hose 360 to prevent the slurry from leaking. During the process of filling the cartridge column with the slurry, the hose can be temporarily clamped with a hose clamp 361 to prevent the slurry from flowing out. After the cartridge column is assembled on the connecting seat and the pressing cylinder 370 presses the hose, the hose clamp 361 is removed.

[0075] Among them, the pressing plate 330 mainly serves to press the multi-functional cartridge column 350, and the locking cap 320 mainly serves to block the cartridge column 350 and provide a sealed space.

[0076] In some embodiments of the present invention, referring to Figure 4 and Figure 6 as shown, the cartridge column 350 includes: a water jacket layer 351, which is hollow; a threaded portion 352, which is disposed above the water jacket layer 351 and is connected to the locking cap 320; a hose joint 353, which is disposed below the water jacket layer 351 and is connected to the hose 360; a contraction angle 354, which is disposed between the water jacket layer 351 and the hose joint 353; a circulating water outlet connection 355 and a circulating water inlet connection 356, which are fixed to the outside of the water jacket layer 351 and are in communication with the water jacket layer 351. Among them, the threaded portion 352 is screwed to the bottom of the locking cap 320, and the hose joint 353 is connected to the hose 360 and then is fixed by being pressed by the pressing cylinder 370. Among them, the hollow setting of the water jacket layer 351 can store hot water and allow it to flow. Among them, the setting of the thread 352 can ensure the installation and fixation of the water jacket layer 351 and ensure the stability of the water jacket layer 351 during use. Among them, the circulating water inlet connection 355 and the circulating water inlet connection 356 are connected to the mold temperature controller 500, and hot water is injected into the interior of the water jacket layer 351 under the drive of the mold temperature controller 500, with one water inlet and one water outlet, realizing the heat circulation inside the water jacket layer 351.

[0077] In some embodiments of the present invention, referring to Figure 5 as shown, the cartridge column 350 includes: a water jacket layer 351, which is solid; a threaded portion 352, which is disposed above the water jacket layer 351 and is connected to the locking cap 320; a hose joint 353, which is disposed below the water jacket layer 351 and is connected to the hose 360; a contraction angle (i.e., a frustum portion) 354, which is disposed between the water jacket layer 351 and the hose joint 353.

[0078] Among them, this multifunctional cartridge column 350 is applicable to Step 1, Step 3, and Step 4.

[0079] In some embodiments of the present invention, referring to Figure 3 as shown, the multi-parameter experimental device 300 further includes: a high-precision electronic scale 380, which is placed below the connecting seat 310 and mainly functions to weigh the weight of the discharged medicine slurry; a medicine receiving tray 390, which is placed on top of the high-precision electronic scale 380 and is located below the pressing hose 360. Among them, the high-precision electronic scale 380 mainly functions to weigh the weight of the discharged medicine slurry, and this electronic scale can output a curve graph of the change in the weighing value, thereby converting the flow rate of the medicine slurry; among them, by the setting of the medicine receiving tray 390, the medicine slurry discharged from the hose 360 is received, facilitating the weighing of the medicine slurry.

[0080] In some embodiments of the present invention, referring to Figure 2As shown in the figure, it further includes: a control system 700, which is installed on the top of the right workbench 100; a connection accessory 800, and the control system 700 controls the start of the multi-parameter experimental device 300 and the air compressor 600 through the connection accessory 800. Among them, it mainly plays the role of controlling the clamping cylinder 370, the air compressor 600, and the pressurization pressure, and is mainly composed of a manual rotary valve, a controllable pressure regulating meter, etc.; among them, it mainly refers to the connection components between the multi-parameter experimental device and the air compressor 600, the multi-parameter experimental device 300, and the workbench of the control system 700, including air pipes, bolts and nuts, etc.

[0081] In some embodiments of the present invention, referring to Figures 1-6 As shown in the figure, first, the pressure safety threshold of a certain propellant slurry is obtained through the experimental device. Then, by selecting this propellant slurry and applying the combination of various components, the test of the slurry injection angle at different pressures, the test of the slurry injection angle at different temperatures, the test of the slurry residue amount at different contraction angles can be realized. At the same time, the temperature field change of the pipeline when the propellant slurry flows under different parameters can also be obtained. The specific steps are as follows:

[0082] Step 1: Test the pressure safety threshold of the propellant slurry. This verification does not involve temperature parameters. The cartridge column 350 uses Figure 5 the form shown in the figure. During the experiment, the pressure can be appropriately increased to ensure the flow velocity. The initial value of the pressure setting is the rated pressure A of the air compressor. During the experiment, a hose is installed at the hose joint end of the cartridge column and fixed with a hose clamp. The middle and lower parts of the hose 370 are clamped tightly with the hose clamp 361. 20 g of propellant slurry covering the bottom contraction angle (354) is put into the cartridge column 350, and the locking cap 320 is installed on the cartridge column 350. During the experiment, the clamping cylinder is controlled by the rotary valve two 701 to clamp the hose 370 tightly. Remove the hose clamp 361, press the locking cap 320 with a pressing plate, and connect an air pipe at the air pipe joint of the locking cap 320. By adjusting the pressure regulating meter of the air compressor 600, set the pressurization pressure. Rotate the rotary valve one 700 to pressurize the slurry, keep the pressure for 1 min, quickly rotate the rotary valve two 701, and let the airflow at this pressure scour for a period of time. Observe whether the slurry is ignited under the continuous airflow scour, and at the same time record the temperature change value of the multi-functional cartridge column 350;

[0083] If the slurry is not ignited, it is determined that the pressure safety threshold of this slurry is greater than A, and the detection is stopped; if the slurry is ignited, replace the cartridge column 350, lower the pressure, and continue the above operation until the slurry is not ignited. At this time, the pressure is the pressure safety threshold of the slurry; the rule for lowering the pressure is to set the pressure setting value downward every 0.1 - 0.2 MPa;

[0084] Step 2: Test the slurry injection angle at different pressures. This verification does not involve temperature parameters. The cartridge column 350 (solid, not passing hot water) uses Figure 5In the shown form, select the cartridge column with the corresponding angle according to the bottom angle of the actual hopper of the manufacturer; if there are no special requirements, generally select the cartridge column with a shrinkage angle of 80 degrees. During the experiment, install a hose at the hose joint end of the cartridge column and fix it with a hose clamp. Use the hose clamp 361 to press the middle and lower parts of the hose 370. Fill the cartridge column 350 with the propellant slurry. The slurry filled in the cartridge column 350 is 100 g. Install the locking cap 320 on the cartridge column 350. During the experiment, control the pressing cylinder to press the hose 370 through the second rotary valve 701. Remove the hose clamp 361, press the locking cap 320 with a pressing plate, and connect a trachea at the trachea joint of the locking cap 320. By adjusting the pressure regulating gauge on the air compressor (600), set the pressurizing pressure. Rotate the first rotary valve (700) to pressurize the slurry, maintain the pressure for 0.5 - 2 min. Rotate the second rotary valve (701) of the control system to open the pressing cylinder (370), and the slurry starts to flow. Record the weight increase rate of the slurry through the high-precision electronic scale (380), and record the temperature change value of the multi-functional cartridge column (350) through the thermal imager (400). After the experiment, measure the maximum envelope diameter Φ1 of the slurry jet on the grid plate (391). The jet angle detection is carried out according to Figure 7 the method of, and detect the diameter Φ of the hose (360) before the experiment 2 and the distance L between the hose (360) and the grid plate (391); after the experiment, calculate according to the jet angle to complete the test of the jet angle of the propellant slurry under the current pressure setting value;

[0085] Replace the cartridge column (350) again, lower the pressure, and continue the above operations until the test of the jet angle of the propellant slurry is completed with the nth cartridge column (350) under the pressure value P1 = M - (n - 1)*a; the rule for lowering the pressure is to set the pressure setting value downward every 0.1 - 0.2 MPa.

[0086] Step 3: Test the slurry jet angle at different temperatures. This verification involves temperature parameters and set the same pressure. Just set the pressure to the same value. Set the pressurizing pressure to 0.2 Mpa according to the pressurizing casting pressure value in the actual product production; select the cartridge column with the corresponding angle according to the bottom angle of the actual hopper of the manufacturer; if there are no special requirements, generally select the cartridge column with a shrinkage angle of 80 degrees; the cartridge column 350 is used Figure 4In the shown form, during the experiment, a hose is installed at the hose joint end of the cartridge column and fixed with a hose clamp. The middle and lower parts of the hose 370 are clamped tightly by the hose clip 361. The propellant slurry is filled into the cartridge column 350. The slurry filled in the cartridge column 350 is 100 g. The locking cap 320 is installed on the cartridge column 350. During the experiment, the pressing cylinder is controlled by the rotary valve II 701 to press the hose 370 tightly. The hose clip 361 is removed, and the locking cap 320 is pressed by a pressing plate. An air pipe is connected at the air pipe joint of the locking cap 320. By adjusting the temperature controller on the mold temperature controller 500, the required temperature is set to 35 °C and kept warm for 2 minutes. The pressing cylinder 370 is opened by rotating the rotary valve II 701, and the slurry starts to flow. The weight increase rate of the slurry is recorded by the high-precision electronic scale 380, and the temperature change value of the multi-functional cartridge column 350 is recorded by the thermal imager 400. The spray angle detection is carried out according to Figure 7 the method. The required dimensions are measured before the experiment starts and calculated after the experiment is completed;

[0087] Replace the cartridge column 350, adjust the temperature value according to the temperature setting sequence, and continue the above operations until the 6th cartridge column 350 is taken to complete the spray angle test of the propellant slurry at 60 °C. The temperature setting sequence is 35 °C, 40 °C, 45 °C, 50 °C, 55 °C, 60 °C.

[0088] Step 4: Test the slurry residue amount at different contraction angles 354. This verification does not involve temperature parameters. The cartridge column 350 is used Figure 5 in the shown form. Before the experiment, solid multi-functional cartridge columns 350 with different angles need to be pre-made according to the angles. During the experiment, an appropriate pressure is set to ensure the flow rate. During the experiment, a hose is installed at the hose joint end of the cartridge column and fixed with a hose clamp. The middle and lower parts of the hose 370 are clamped tightly by the hose clip 361. The propellant slurry is filled into the cartridge column 350. The slurry filled in the cartridge column 350 is 100 g. The locking cap 320 is installed on the cartridge column 350. During the experiment, the pressing cylinder is controlled by the rotary valve II 701 to press the hose 370 tightly. The hose clip 361 is removed, and the locking cap 320 is pressed by a pressing plate. An air pipe is connected at the air pipe joint of the locking cap 320. By adjusting the pressure regulating gauge on the air compressor 600, the pressurizing pressure is set. The slurry is pressurized by rotating the rotary valve I 700 and kept under pressure for 0.5 - 2 min. The pressing cylinder 370 is opened by rotating the rotary valve II 701, and the slurry starts to flow until the value on the high-precision electronic scale 380 no longer changes. The multi-functional cartridge column is removed, and the weight values before and after the test are weighed. The difference is the slurry residue amount. At the same time, the temperature change value of the multi-functional cartridge column 350 is recorded;

[0089] Replace the cartridge column 350 and continue the above operations until the nth cartridge column 350 is taken to complete the test of the propellant slurry residue amount at different contraction angles.

[0090] Step 5: Test the temperature field change of the propellant slurry when flowing under different parameters. In the above research, the temperature field monitoring data of the thermal imager is exported and sorted out, and the temperature field change of the slurry when flowing under different parameters can be obtained.

[0091] Among them, Step 1 mainly verifies the safety of the slurry when breaking the vacuum at the end of pouring. Under the continuous scouring of the high-speed air flow, whether the slurry can be ignited. Step 2 mainly verifies the spray angle of the slurry under different pressures. Step 3 mainly verifies the spray angle of the slurry under different temperatures. Step 4 mainly verifies the residual amount of the cartridge column under different tapers. Step 5 mainly monitors the temperature change of the system under different parameters. Since there is no vacuum environment in this experiment, the pressure difference between the upper and lower liquid levels of the slurry is mainly achieved by pressurization. The spray angle detection is carried out in accordance with Figure 7 the following way. Before the experiment, measure the diameter of the hose 360 and the distance L between the hose 360 and the grid plate 391. After the experiment, by measuring the maximum diameter of the slurry dispersion on the grid plate 391, the spray angle is calculated through the calculation formula.

[0092] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-parameter detection device for propellant slurry, characterized in that: include: A workbench (100), wherein two workbench (100) are provided; An explosion-proof wall (200), the explosion-proof wall (200) being arranged between two workbenches (100), and the explosion-proof wall being provided with an observation window (201); A multi-parameter experimental device (300), wherein the multi-parameter experimental device (300) is placed on top of the left workbench (100); A thermal imager (400), the thermal imager (400) being placed on the top of the left workbench (100) and located on one side of the multi-parameter experimental device (300); A mold temperature controller (500), the mold temperature controller (500) being placed on one side of the left workbench (100); an air compressor (600), the air compressor (600) being placed on the other side of the left workbench (100); The multi-parameter experimental device (300) comprises a connecting seat (310), a cartridge column (350) is mounted on the upper portion of the connecting seat (310), the cartridge column (350) comprises a barrel, a hose connector (353) connected to the lower end of the barrel, and a thread (352) connected to the outer wall of the upper end of the barrel, the upper end of the cartridge column (350) is detachably connected to a locking cap (320) via the thread (352), and the upper end of the locking cap (320) is provided with an air inlet connected to an air compressor (600); a thread (352) is mounted in the middle portion of the connecting seat (310) for compressing the air at the hose connector (353). The hose (360) is a compression assembly to prevent the medicine slurry from flowing out, and the lower part of the connecting seat (310) is provided with a medicine receiving tray (390) for receiving the medicine slurry discharged from the hose (360), and the medicine receiving tray (390) is placed on the high-precision electronic scale (380); the cylinder wall is a solid structure or a hollow structure; the lower end of the cylinder is connected to the hose connector (353) via a contraction angle (354); the mold temperature controller (500) is connected to the circulating water inlet nozzle (356) and the circulating water outlet nozzle (355) on the outer wall of the medicine cartridge column (350) whose cylinder wall is a hollow structure; The pressing assembly comprises a pressing cylinder (370) located on one side of the hose (360), and a baffle (311) located on the other side of the hose (360) and cooperating with the pressing cylinder (370); The clamping assembly further comprises a hose clamp (361) for clamping the hose (360) before the clamping cylinder (370) is clamped to prevent the slurry from flowing out, and the hose clamp (361) is detachably mounted on the hose (360); a rotary valve 1 (700) and a rotary valve 2 (701) connected to the air compressor (600) are provided on the right workbench (100); the other end of the rotary valve 1 (700) is connected to the locking cap (320), and the other end of the rotary valve 2 (701) is connected to the clamping cylinder (370).

2. The multi-parameter detection device for propellant slurry according to claim 1, characterized in that: A pressing plate (330) for pressing the locking cap (320) is also mounted on the upper portion of the connecting seat (310). The pressing plate (330) is fixed to the upper portion of the connecting seat (310) via screws and bolts. Two pressing plates (330) are provided and are symmetrically mounted on both sides of the locking cap (320).

3. The multi-parameter detection device for propellant slurry according to claim 1, characterized in that: The hose (360) is detachably fixed to the bottom of the multifunctional cartridge column (350) and extends downward; the circulating water outlet nozzle (355) is located at the upper part, and the circulating water inlet nozzle (356) is located at the lower part.

4. The multi-parameter detection device for propellant slurry according to claim 1, characterized in that: It also includes a control system (700), which is installed on the top of the right workbench (100) and includes two rotary valves, rotary valve one (700) and rotary valve two (701), wherein rotary valve one controls the pressurization of the cartridge column, and rotary valve two controls the forward and backward movement of the pressing cylinder (370); and an air pipe (800), wherein the control system (700) controls the airflow of the pressing cylinder (370) and the air compressor (600) through the air pipe (800).

5. A multi-parameter detection method for propellant slurry, characterized in that: The multi-parameter detection device as described in any one of claims 1 to 4 is used for verification. The pressure safety threshold of a certain propellant slurry is first measured, and then the propellant slurry is selected to perform slurry injection angle tests at different pressures, slurry injection angle tests at different temperatures, and slurry residual tests at different contraction angles. At the same time, the temperature field changes of the pipeline when the propellant slurry flows under different parameters are obtained.

6. A multi-parameter detection method for propellant slurry, characterized in that: Verification is performed using a multi-parameter detection device as described in any one of claims 1 to 4, Step 1: The steps for measuring the pressure safety threshold of the propellant slurry are as follows: A1: prepare n cartridge columns (350) with solid wall structures; A2: Take the first cartridge column (350), the pressure value P of the cartridge column (350) is the rated pressure A of the air compressor; A3: Connect the hose (360) to the hose connector (353) of the cartridge column (350) and fix it with a hose clamp. Before the experiment, use the hose clamp (361) to compress the upper and middle part of the hose (360). Put the medicine slurry covering the bottom contraction angle (354) into the cartridge column (350). Install the locking cap (320) on the cartridge column (350). During the experiment, control the compressing cylinder (370) by the rotary valve 2 (701) to compress the hose (360), and remove the hose clamp (361). A4: Adjust the pressure gauge of the air compressor (600) to set the pressurized pressure value = P, turn the rotary valve 1 (700) to pressurize the slurry, maintain the pressure for 0.5-2 minutes, quickly turn the rotary valve 2 (701), open the compression cylinder (370), and continue to flush the slurry with airflow at this pressure for 50±10 seconds. Observe whether the slurry ignites under the continuous airflow, and record the temperature change values ​​of the cartridge column (350) and the hose (360); A5: If the slurry is not ignited, it is determined that the slurry pressure safety threshold M is greater than A, and the detection is stopped; A6: If the slurry is ignited, take the second cartridge column (350), lower the pressure, and the pressure value of the cartridge column (350) is P=Aa; repeat steps A3 and A4; if the slurry is not ignited, determine that the slurry pressure safety threshold M is the current pressure value P=Aa, and stop testing; A7: If the slurry is ignited, take the third cartridge column (350), lower the pressure, and the pressure value of the cartridge column (350) is P=A-2*a; repeat steps A3 and A4; if the slurry is not ignited, determine that the slurry pressure safety threshold M is the current pressure value P=A-2*a, and stop testing; a=0.1-0.2Mpa; And so on, until the nth cartridge column (350) is taken for testing and the slurry is not ignited, the pressure P at this time = A-(n-1)*a is the pressure safety threshold M of the slurry; Step 2: The steps for detecting the injection angle of the propellant slurry under different pressures are as follows: B1: preparing a plurality of cartridge columns (350) with solid cylinder walls, wherein one cartridge column (350) corresponds to one pressure value; B2: Take the first cartridge column (350), the pressure value P1 of the cartridge column (350) is the pressure safety threshold M of the slurry; B3: The grid plate (391) for spray angle detection is placed inside the medicine receiving tray (390), and the hose (360) is connected to the hose connector (353) of the cartridge column (350) and fixed with a hose clamp. Before the experiment, the upper and middle part of the hose (360) is compressed by the hose clamp (361), and the medicine slurry is filled into the cartridge column (350). The locking cap (320) is installed on the cartridge column (350). During the experiment, the compression cylinder (370) is controlled by the rotary valve 2 (701) to compress the hose (360), and the hose clamp (361) is removed. Before the experiment, the diameter Φ2 of the hose (360) and the distance L between the hose (360) and the grid plate (391) are detected; B4: By adjusting the pressure regulator on the air compressor (600), the pressure value of the pressurization is set to P1, and the slurry is pressurized by rotating the valve 1 (700), and the pressure is maintained for 0.5-2 minutes. By rotating the valve 2 (701), the pressing cylinder (370) is opened, and the slurry begins to flow. The speed of increase of the slurry weight is recorded by the high-precision electronic scale (380), and the temperature change value of the cartridge column (350) and the hose (360) is recorded by the thermal imager (400). After the experiment, the maximum envelope diameter Φ1 of the slurry sprayed by the grid plate (391) is measured. After the experiment, the spray angle is calculated by the formula , complete the propellant slurry injection angle test under the current pressure setting value; B5: Take the second cartridge column (350), lower the pressure, and the pressure value of the cartridge column (350) is P1=Ma; Repeat steps B3 and B4, and so on, until the nth cartridge column (350) is taken to complete the propellant slurry injection angle test at the pressure value P1= M -(n-1)*a; Step 3: The steps for detecting the spray angle of the propellant slurry at different temperatures are as follows: C1: preparing a plurality of cartridge columns (350), wherein one cartridge column (350) corresponds to one temperature, and the hollow structure of the barrel wall of the cartridge column (350) forms a water jacket layer (351), and circulating water enters the water jacket layer (351) through a circulating water inlet nozzle (356) and then flows out through a circulating water outlet nozzle (355); Carry out the propellant slurry injection angle test at different temperatures. This verification involves temperature parameters and the same pressure is set; C2: Repeat step B3; C3: By adjusting the temperature controller on the mold temperature controller (500), the required temperature T=35°C is set, the circulating water is turned on, and the temperature is kept for 8-10 minutes. By turning the second rotary valve (701), the pressing cylinder (370) is opened, and the slurry starts to flow. The slurry weight increase rate is recorded by the high-precision electronic scale (380), and the temperature change value of the cartridge column (350) and the hose (360) is recorded by the thermal imager (400). After the experiment, the diameter Φ1 of the slurry sprayed on the grid plate (391) is measured, and the spray angle is calculated by the formula in step B4 to complete the propellant slurry spray angle test at this temperature; C4: Repeat steps C2 and C3 by analogy until the nth cartridge column (350) is taken to complete the propellant slurry injection angle test at a temperature of T=35+(n-1)*5°C; Step 4: The steps for testing the residual amount of propellant slurry under the cartridge column at different contraction angles are as follows: D1: Prepare multiple cartridge columns (350) with different contraction angles; this verification does not involve temperature parameters, the cylinder wall of the cartridge column (350) is a solid structure, and the pressure value P2 is set to be less than M during the experiment to ensure the flow rate of the propellant slurry, and take the first cartridge column (350); D2: Connect the hose (360) to the hose connector (353) of the cartridge column (350) and fix it with a hose clamp. Before the experiment, the upper and middle part of the hose (360) is compressed by the hose clamp (361). The cartridge column (350) is filled with drug slurry. The locking cap (320) is installed on the cartridge column (350). During the experiment, the compression cylinder (370) is controlled by the rotary valve 2 (701) to compress the hose (360), and the hose clamp (361) is removed. D3: By adjusting the pressure gauge on the air compressor (600), set the pressurization pressure value P2, and turn the rotary valve (700) to pressurize the slurry, and maintain the pressure for 0.5-2 minutes. By turning the rotary valve (701), the compression cylinder (370) is opened, and the slurry begins to flow until the value of the high-precision electronic scale (380) no longer changes. Remove the cartridge and weigh its weight before and after the test. The difference is the residual amount of slurry. At the same time, record the temperature change values ​​of the cartridge column (350) and the hose (360), and complete the test of the residual amount of propellant slurry at this contraction angle; D4: Repeat steps D2 and D3 in the same manner until the nth cartridge column (350) is taken to complete the propellant slurry residual quantity test at different contraction angles.

7. The multi-parameter verification method for propellant slurry according to claim 6, characterized in that: The temperature field monitoring data of the thermal imager in steps one to four are exported and sorted to obtain the temperature field changes when the propellant slurry flows under different parameters.

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