A multi-parameter detection device and method for propellant slurry

Abstract

The application discloses a kind of multi-parameter verification method and device for propellant slurry, device includes: workbench, the workbench is provided with two;Explosion-proof wall, the explosion-proof wall is arranged between two workbenches;Multi-parameter experimental device, the multi-parameter experimental device is placed on the top of left workbench;Thermal imager, the thermal imager is placed on the top of left workbench, and located in the side of multi-parameter experimental device;The pressure safety threshold of certain propellant slurry is obtained by experimental device first in the application, and then the combination application of each component is selected, propellant slurry can be realized under different pressure slurry injection angle test, propellant slurry injection angle test under different temperature, propellant slurry residual quantity test under different shrinkage angle, while propellant slurry temperature field change of pipeline can also be obtained when flowing under different parameters.

Description

Technical Field

[0001] This invention relates to the field of multi-parameter verification technology for propellant slurries, and in particular to a multi-parameter verification device and method for propellant slurries. Background Technology

[0002] The casting process of composite propellants is quite complex, with varying requirements for each step, including technology, materials, equipment, and personnel. Furthermore, due to industry barriers, advanced civilian technologies cannot be imported, and for confidentiality reasons, relevant data cannot be publicly disclosed. This prevents propellant manufacturers from sharing research findings. Standards for experimental parameters in the propellant slurry casting process have not been established. Each manufacturer designs its experimental apparatus based on its own needs, resulting in a high degree of customization and specialized equipment, failing to develop a universal, multi-parameter verification experimental setup.

[0003] Propellant slurry casting is a crucial step in propellant production, directly impacting the final state of the propellant. Currently, the main methods for studying flow field changes and process parameters during propellant vacuum casting are simulation and experimentation. Simulation methods can analyze detailed parameters during slurry casting, facilitating process optimization. However, due to the influence of factors such as the simulation model, simulation environment, and slurry composition deviations, it is difficult to accurately simulate the real flow of the slurry, often resulting in significant deviations. In practical applications, the simulated trend is generally adopted, and the simulated values ​​are only for reference by experimental personnel. To accurately obtain the flow characteristics of the slurry and continuously improve the simulation process, experimentation is essential. Since propellant slurries are energetic materials, safely simulating the real flow of the slurry to obtain different parameters is of great guiding significance for propellant production and formulation research. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and to provide a multi-parameter verification device and method for propellant slurry, which can achieve highly flexible detection of multiple parameters with a small amount of propellant, while ensuring the safety of experimental personnel.

[0005] The technical problem solved by this invention is achieved by the following technical solution:

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

[0007] Two worktables are provided.

[0008] An explosion-proof wall is installed between two workbenches and has an observation window.

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

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

[0011] A mold temperature machine is placed on one side of the left workbench, and an air compressor is placed on the other side of the left workbench;

[0012] The multi-parameter experimental device comprises a connecting seat, an upper portion of the connecting seat is provided with a cartridge column, the cartridge column comprises a barrel, a hose joint connected to a lower end of the barrel, and a thread connected to an outer wall of an upper end of the barrel, an upper end of a locking cap is detachably connected to the upper end of the cartridge column through the thread, and the locking cap is provided with an air inlet connected to the air compressor; a pressing assembly for pressing a hose arranged at the hose joint to prevent the outflow of medicinal paste is arranged in a middle portion of the connecting seat, and a medicinal paste receiving disc for receiving medicinal paste discharged from the hose is arranged in a lower portion of the connecting seat; the medicinal paste receiving disc is placed on an upper portion of a high-precision electronic scale; the barrel wall is in a solid structure or a hollow structure; the lower end of the barrel is connected to the hose joint through a contraction angle; the mold temperature machine is connected to a water nozzle of a circulating water inlet and a water nozzle of a circulating water outlet on an outer wall of the cartridge column with the hollow barrel wall;

[0013] The pressing assembly comprises a pressing cylinder on one side of the hose and a baffle cooperating with the pressing cylinder on the other side of the hose;

[0014] The pressing assembly further comprises a hose clamp for pressing the hose to prevent the outflow of medicinal paste before the pressing cylinder is pressed, and the hose clamp is detachably arranged on the hose; the right workbench is provided with a rotary valve one and a rotary valve two connected to the air compressor, one end of the rotary valve one is connected to the locking cap, and the other end of the rotary valve two is connected to the pressing cylinder.

[0015] An upper portion of the connecting seat is further provided with a pressing plate for pressing the locking cap, and the pressing plate is fixed to the upper portion of the connecting seat through a screw rod and a bolt; the pressing plate is provided with two pressing plates and is symmetrically arranged on both sides of the locking cap.

[0016] The hose is detachably fixed to a bottom portion of the multifunctional cartridge column and extends downward; the water nozzle of the circulating water outlet is located at an upper portion, and the water nozzle of the circulating water inlet is located at a lower portion.

[0017] The control system is installed on the top of the right workbench and comprises two rotary valves, a rotary valve one and a rotary valve two, the rotary valve one controls the pressurization of the cartridge column, and the rotary valve two controls the forward and backward movement of the pressing cylinder; the control system controls the airflow of the pressing cylinder and the air compressor through an air pipe.

[0018] A kind of multi-parameter detection method for propellant slurry, using the multi-parameter detection device as described above is verified, the pressure safety threshold of certain propellant slurry is measured first, then the propellant slurry is selected to carry out the test of slurry injection angle under different pressure, the test of slurry injection angle under different temperature, the test of slurry residual under different shrinkage angle, and the temperature field change of pipeline when propellant slurry flows under different parameters is obtained simultaneously.

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

[0020] Step one: the step of measuring the pressure safety threshold of propellant slurry is

[0021] A1: prepare n cylinder wall solid structure cartridge column;

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

[0023] A3: connect the hose at the hose joint of cartridge column and fix with throat clamp, before experiment, the upper part of hose is pressed tightly by hose clamp, 20±5g of slurry covering the bottom shrinkage angle is placed in cartridge column, locking cap is installed on cartridge column, during experiment, the hose is pressed tightly by pressure cylinder controlled by valve two, and hose clamp is removed;

[0024] A4: by adjusting air compressor pressure regulating table, set the pressure value=P of pressurization, by rotating valve one, slurry is pressurized, and pressure is maintained for 0.5-2min, valve two is quickly rotated, pressure cylinder is opened, and the airflow under the pressure is continuously flushed for 50±10s, whether the slurry is ignited under the continuous airflow flushing is observed, and the temperature change value of cartridge column and hose is recorded;

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

[0026] A6: if the slurry is ignited, the second cartridge column is taken, the pressure is adjusted, the pressure value P of cartridge column is A-a, steps A3 and A4 are repeated, if the slurry is not ignited, it is determined that the pressure safety threshold M of the slurry is the current pressure value P=A-a, and the detection is stopped;

[0027] A7: if the slurry is ignited, the third cartridge column is taken, the pressure is adjusted, the pressure value P of cartridge column is A-2*a, steps A3 and A4 are repeated, if the slurry is not ignited, it is determined that the pressure safety threshold M of the slurry is the current pressure value P=A-2*a, and the detection is stopped;a=0.1-0.2Mpa;

[0028] In succession, until the slurry is not ignited when the n cartridge column is taken for detection, the pressure P=A-(n-1)*a at this time is the pressure safety threshold M of slurry;

[0029] Step two: the steps of detecting the injection angle of the propellant slurry under different pressures are

[0030] B1: prepare a plurality of cartridge columns with solid structure, one cartridge column corresponding to one pressure value; the distance between the lower end of the hose and the grid plate needs to be measured in advance during the experiment, which should be no less than 100 mm, and the distance is preferably set based on the condition that the slurry is not sprayed out of 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: the grid plate for injection angle detection is placed in the receiving tray, the hose is connected at the hose joint of the cartridge column and fixed with a hose clamp, the upper part of the hose is pressed tightly by the hose clamp before the experiment, the cartridge column is filled with slurry, the locking cap is installed on the cartridge column, the hose is pressed tightly by the pressing cylinder controlled by valve two during the experiment, and the hose clamp is removed; the diameter Φ2 of the hose and the distance L between the hose and the grid plate are detected before the experiment; the slurry filled in the cartridge column is 100±10 g;

[0033] B4: the pressure value P1 is set by adjusting the pressure gauge on the air compressor, the slurry is pressurized by rotating valve one, the pressure is maintained for 0.5-2 minutes, the pressing cylinder is opened by rotating valve two, the slurry starts to flow, the weight gain speed of the slurry is recorded by a high-precision electronic scale, the temperature change value of the cartridge column and the hose is recorded by a thermal imager, the maximum envelope diameter Φ1 of the slurry sprayed by the grid plate is measured after the experiment, and the injection angle is calculated by the formula after the experiment is completed , the injection angle of the propellant slurry under the current pressure setting value is tested;

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

[0035] Repeat steps B3 and B4, and sequentially take the nth cartridge column to complete the injection angle test of the propellant slurry under the pressure value P1=M-(n-1)*a; a=0.1-0.2Mpa;

[0036] Step three: the steps of detecting the injection angle of the propellant slurry under different temperatures are

[0037] C1: prepare a plurality of cartridge columns, one cartridge column corresponding to one temperature, and the hollow structure of the cartridge column forms a water jacket layer, and the circulating water enters the water jacket layer through the circulating water inlet connector and then flows out through the circulating water outlet connector;

[0038] The propellant slurry jet angle test at different temperatures is carried out, and the verification involves the temperature parameter. The pressure is set to be the same value, and the temperature is set to be 35℃, 40℃, 45℃, 50℃, 55℃ and 60℃. The pressure is set to be the same value, and the pressurizing pressure is set to be 0.2Mpa according to the pressurizing casting pressure value in actual product production. The cartridge column with the corresponding included angle is selected according to the bottom included angle of the actual hopper of the manufacturer. Without special requirements, the cartridge column with an included angle of 80 degrees is generally selected;

[0039] C2: repeat step B3;

[0040] C3: set the required temperature T=35℃ by adjusting the temperature controller on the mold temperature machine, turn on the circulating water, and keep warm for 8-10 minutes. Open the pressing cylinder by rotating valve two, and the slurry starts to flow. Record the slurry weight increase speed by high-precision electronic scale, and record the temperature change value of the cartridge column and hose by thermal imager. After the experiment, measure the diameter Φ1 of the slurry jet on the grid plate, calculate the jet angle by the formula in step B4, and complete the propellant slurry jet angle test at this temperature;

[0041] C4: repeat steps C2 and C3 in turn until the nth cartridge column is taken to complete the propellant slurry jet angle test at the temperature T=35+(n-1)*5℃; T≤60℃;

[0042] Step four: the steps for propellant slurry residue test under different shrinkage angle cartridge columns are

[0043] D1: prepare multiple cartridge columns with different shrinkage angles; this verification does not involve temperature parameters, and the cartridge column body wall is solid structure. Set the pressure value P2 to be less than M to ensure the flow speed of the propellant slurry during the experiment. The pressure is set to be 0.2Mpa according to the pressurizing casting pressure value in actual product production, and the first cartridge column is taken;

[0044] D2: connect the hose to the cartridge column hose joint and fix it with a hose clamp. Before the experiment, press the upper part of the hose with the hose clamp, fill the cartridge column with slurry, install the locking cap on the cartridge column, and control the pressing cylinder to press the hose during the experiment by rotating valve two. Remove the hose clamp;

[0045] D3: set the pressurizing pressure value P2 by adjusting the pressure regulating table on the air compressor, press the slurry by rotating valve one, and keep pressure for 0.5-2min. Open the pressing cylinder by rotating valve two, and the slurry starts to flow until the high-precision electronic scale value no longer changes. Remove the cartridge column, weigh its weight before and after the experiment, and the difference is the slurry residue. Record the temperature change value of the cartridge column and hose at the same time, and complete the propellant slurry residue test at this shrinkage angle;

[0046] D4: In turn, repeat steps D2, D3 until the nth cartridge column is taken to complete the residual amount test of propellant slurry under different contraction angles.

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

[0048] At present, the detection of the residual amount of the bin in the propellant pouring process mainly relies on the experience value. The device can be flexibly replaced with different cartridge columns, and can experimentally study the residual amount of the bin under different contraction angles and parameters, thereby providing a basis for determining the pouring amount of production. At present, the research on the main safety threshold is basically based on the characteristics of the slurry itself, such as the impact threshold, friction threshold, static threshold, heat threshold and the like, and the actual pouring process of the propellant is not studied.

[0049] At present, the parameter detection device of the propellant slurry mainly detects single parameters, and there is no research device for the combination of propellant slurry pouring parameters under a complex system of multiple parameters. In actual work, the slurry pouring is the result of the comprehensive combination of multiple parameters. At present, there is no related device to study the mutual influence relationship between multiple parameters, but only the influence relationship between one or two parameters is studied. The single parameter research device is relatively simple, and when multiple parameters are studied, the influence relationship of various parameters of the propellant needs to be considered comprehensively, and the experimental device needs to have high flexibility to adapt to different parameters, different types of slurry and different scene requirements, and it is much more difficult to realize than the single parameter device. The size of the propellant injection angle is related to the slurry model (different viscosity), the contraction angle, the slurry temperature, the pressurizing pressure and the like. The experimental device can verify the influence of the above parameters on the slurry injection angle. The device can use a small amount of propellant slurry to study the safety threshold of the pouring process, and ensure the safety of the production parameters. The present application combines the above parameters for combined research, and has the characteristics of comprehensiveness and flexibility.

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

[0051] Through the combination design of various components, the following parameter verification can be realized:

[0052] 1. The slurry injection angle test under different pressures can be realized, and the slurry injection angle under different pressures can be obtained through the test, thereby providing parameter guidance for mass production equipment.

[0053] 2. The slurry injection angle test under different temperatures can be realized, and the slurry injection angle under different temperatures can be obtained through the test, thereby providing suitable temperature parameters for mass production of slurry.

[0054] 3. The slurry residual amount test under different contraction angles can be realized, and the slurry residual amount under different hopper contraction angles can be obtained through the test, thereby providing parameter guidance for the design of the hopper.

[0055] 4. The propellant slurry transient vacuum break safety threshold detection (i.e. pressure safety threshold test) can be obtained through the experimental device, and the risk of ignition of the slurry with different formulations under what pressure parameters will appear;

[0056] 5. The temperature field change detection of the propellant slurry flowing under different parameters, mainly detecting the temperature field change of the slurry under different flow speeds. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

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

[0059] Figure 2 It is a schematic view of the structure of the present application;

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

[0061] Figure 4 It is a schematic view of the structure of the inlet and outlet interfaces of the circulating water of the present application;

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

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

[0064] Figure 7 It is a schematic view of the device measuring parameters of the present application. Figure 3

[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, compression cylinder; 380, high-precision electronic scale; 390, medicine receiving disc; 400, thermal imager; 500, mold temperature machine; 600, air compressor; 700, control system; 800, air pipe. DETAILED DESCRIPTION

[0066] ​In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0067] Referring to Figures 1-6 A multi-parameter verification device for propellant slurry shown in the figure, comprising: two workbenches 100, which mainly serve to store control components; an explosion-proof wall 200, which is arranged between the two workbenches 100 and mainly serves to isolate personnel from equipment; a multi-parameter experimental device 300, which is detachably installed on the top of the left workbench 100; a thermal imager 400, which is detachably installed on the top of the left workbench 100 and located on one side of the multi-parameter experimental device 300, mainly serving to detect the temperature change of the multi-parameter experimental device and generate a temperature change curve; a mold temperature machine 500, which is placed on one side of the left workbench 100 and mainly serves to provide hot water circulation; and an air compressor 600, which is placed on the other side of the left workbench 100 and mainly serves to provide gas pressurization.

[0068] When in use, slurry is added to the interior of the multi-parameter experimental device 300, and the air compressor 600 provides the effect of pressurizing 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 control system's valve two 701, and the cartridge column is pressurized by the control system's valve one 700. The mold temperature machine 500 provides hot water for the multi-parameter experimental device 300 and drives the hot water circulation, and detects the temperature change of the multi-parameter experimental device during the experiment by the thermal imager 400, and generates a temperature change curve for the observation of the experimental personnel.

[0069] The combination design of various components can realize the detection of the spray angle of different types of propellant slurry, the thermal safety value detection of propellant slurry, the limit spray angle detection of propellant slurry, the instantaneous vacuum breaking safety threshold detection of propellant slurry, and the temperature field change detection of propellant slurry flowing under different parameters.

[0070] The setting of the explosion-proof wall 200 can avoid casualties of experimental personnel caused by the combustion of the multi-parameter experimental device 300 and improve the safety of experimental personnel.

[0071] In some embodiments of the present application, referring to Figure 3As shown, the multi-parameter experimental device 300 comprises: a connecting seat 310 placed on the top of the workbench 100, mainly serving to support the installation of various components; a detachable locking cap 320 located on the top of the connecting seat; two pressure plates 330, which are installed on the outside of the locking cap 320, used to press the locking cap; a multi-functional cartridge column 350, which is detachably fixed at the bottom of the locking cap 320, mainly serving to store the medicine paste; a hose 360, which is detachably fixed at the bottom of the multi-functional cartridge column 350 and extends downward to prevent the medicine paste from leaking; and a compression cylinder 370, which is installed in the middle of the connecting seat 310 and used to compress the hose 360, cooperating with the hose 360 to seal the medicine paste. The hose 360 is placed between the baffles 311, which are fixed on the connecting seat 310 with the compression cylinder 370. The piston of the compression cylinder 370 extends to compress the hose 360 against the baffles 311, and the hose deforms to seal the medicine paste.

[0072] The control system mainly comprises two hand-operated valves, one for controlling the movement of the compression cylinder - valve two 701, and the other for controlling the ventilation and pressurization of the cartridge column 350 - valve one 700. During the experiment, the lower part of the hose 370 is compressed by the hose clamp 361, the equivalent propellant medicine paste covering the bottom shrinkage angle is put into the cartridge column 350, and the locking cap 320 is installed on the cartridge column 350. During the experiment, the hose 370 is compressed by the compression cylinder controlled by valve two 701, the hose clamp 361 is removed, the locking cap 320 is pressed by the pressure plate, and the air pipe is connected at the air pipe joint of the locking cap 320. The set pressure is achieved by adjusting the controllable pressure regulator, the compression cylinder 370 is opened by the hand-operated valve, and the medicine paste starts to flow downward. Through the combination design of various components, the medicine paste spray angle test under different pressures, the medicine paste spray angle test under different temperatures, the medicine spray angle test under different shrinkage angles 354, the spray angle test of different types of propellant medicine paste, the instantaneous vacuum breaking safety threshold test of propellant medicine paste, the temperature field change test of propellant medicine paste flowing under different parameters, etc. can be realized.

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

[0074] The compression cylinder 370 is used to compress the hose 360 to prevent the medicine paste from leaking. The hose can be temporarily compressed by the hose clamp 361 during the process of filling the medicine paste into the cartridge column to prevent the medicine paste from flowing out. After the cartridge column is assembled on the connecting seat and the hose is compressed by the compression cylinder 370, the hose clamp 361 is removed.

[0075] The pressure plate 330 mainly serves to compress 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 application, referring to Figure 4 and Figure 6 As shown, the cartridge column 350 includes: a water jacket layer 351, which is hollow; a threaded part 352, which is arranged above the water jacket layer 351 and connected with the locking cap 320; a hose joint 353, which is arranged below the water jacket layer 351 and connected with the hose 360; a contraction angle 354, which is arranged between the water jacket layer 351 and the hose joint 353; a circulating water outlet interface 355 and a circulating water inlet interface 356, which are fixed on the outside of the water jacket layer 351 and communicate with the water jacket layer 351. The threaded part 352 is screwed at the bottom of the locking cap 320, and the hose joint 353 is connected with the hose 360, which is then fixed by the pressing cylinder 370. The hollow water jacket layer 351 can store and flow hot water. The threaded part 352 ensures the installation and fixation of the water jacket layer 351, and ensures the stability of the water jacket layer 351 during use. The circulating water inlet interface 355 and the circulating water outlet interface 356 are connected with the mold temperature controller 500, and hot water is injected into the inside of the water jacket layer 351 under the drive of the mold temperature controller 500, one water inlet and one water outlet, realizing the heat circulation inside the water jacket layer 351.

[0077] In some embodiments of the present application, referring to Figure 5 As shown, the cartridge column 350 includes: a water jacket layer 351, which is hollow; a threaded part 352, which is arranged above the water jacket layer 351 and connected with the locking cap 320; a hose joint 353, which is arranged below the water jacket layer 351 and connected with the hose 360; a contraction angle 354, which is arranged between the water jacket layer 351 and the hose joint 353; a circulating water outlet interface 355 and a circulating water inlet interface 356, which are fixed on the outside of the water jacket layer 351 and communicate with the water jacket layer 351. The threaded part 352 is screwed at the bottom of the locking cap 320, and the hose joint 353 is connected with the hose 360, which is then fixed by the pressing cylinder 370. The hollow water jacket layer 351 can store and flow hot water. The threaded part 352 ensures the installation and fixation of the water jacket layer 351, and ensures the stability of the water jacket layer 351 during use. The circulating water inlet interface 355 and the circulating water outlet interface 356 are connected with the mold temperature controller 500, and hot water is injected into the inside of the water jacket layer 351 under the drive of the mold temperature controller 500, one water inlet and one water outlet, realizing the heat circulation inside the water jacket layer 351.

[0078] The multifunctional cartridge column 350 is suitable for steps one, three and four.

[0079] In some embodiments of the present application, 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 serves to weigh the outflowing medicinal paste; a medicinal paste receiving disc 390, which is placed on the top of the high-precision electronic scale 380 and below the pressing hose 360. The high-precision electronic scale 380 mainly serves to weigh the outflowing medicinal paste, and can output a curve graph of the change of the weighing value, so as to convert the medicinal paste flow rate. The medicinal paste receiving disc 390 is arranged to receive the medicinal paste discharged from the hose 360, facilitating the weighing of the medicinal paste.

[0080] In some embodiments of the present application, referring to Figure 2As shown, further comprising: a control system 700 installed on the top of the right workbench 100; a connecting accessory 800, the control system 700 controls the multi-parameter experimental device 300 and the air compressor 600 to start through the connecting accessory 800. Wherein, mainly play the role of controlling the pressing cylinder 370, the air compressor 600, the pressurizing pressure, mainly composed of manual valve, controllable pressure gauge, etc.; wherein, mainly refers to the connecting component between the multi-parameter experimental device and the air compressor 600, the multi-parameter experimental device 300, the workbench of the control system 700, containing gas pipe, bolt and nut, etc.

[0081] In some embodiments of the present application, with reference to Figures 1-6 As shown, first, the pressure safety threshold of a certain propellant slurry is obtained through the experimental device, and then the propellant slurry is selected to be applied through the combination of components, so that the slurry injection angle test under different pressures, the slurry injection angle test under different temperatures, the slurry residue test under different shrinkage angles, and the temperature field change of the pipeline when the propellant slurry flows under different parameters can be realized. Specifically, the following steps are included:

[0082] Step one: propellant slurry pressure safety threshold test, this verification does not involve temperature parameters, the cartridge column 350 uses Figure 5 As shown, the pressure can be appropriately increased during the experiment to ensure the flow speed, the initial value of the pressure setting value is the rated pressure A of the air compressor, the hose joint end of the cartridge column is installed with a hose during the experiment, and the hose is fixed with a throat clamp. The lower part of the hose 370 is pressed with a hose clamp 361, 20g of propellant slurry covering the bottom shrinkage 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 hose 370 is pressed by the pressing cylinder controlled by the valve two 701, the hose clamp 361 is removed, the locking cap 320 is pressed with a pressing plate, and the gas pipe is connected at the gas pipe joint of the locking cap 320. The pressure gauge of the air compressor 600 is adjusted to set the pressurizing pressure, the valve one 700 is rotated, the slurry is pressurized, the pressure is maintained for 1 min, the valve two 701 is quickly rotated, the airflow under the pressure continues to flush for a period of time, and whether the slurry is ignited under the continuous airflow flushing is observed, and the temperature change value of the multifunctional cartridge column 350 is recorded;

[0083] If the slurry is not ignited, it is determined that the pressure safety threshold of the slurry is greater than A, and the detection is stopped; if the slurry is ignited, the cartridge column 350 is replaced, the pressure is lowered, and the above operation is continued until the slurry is not ignited, at which time the pressure is the pressure safety threshold of the slurry; the rule of lowering the pressure is to set the pressure setting value downward by 0.1-0.2MPa every time;

[0084] Step two: slurry injection angle test under different pressures, this verification does not involve temperature parameters, the cartridge column 350 (solid and not hot water) uses Figure 5The form shown, according to the actual hopper bottom angle of the manufacturer, select the corresponding angle of the cartridge column; no special requirements, generally selected shrink angle of 80 degrees cartridge column. The experimental cartridge column hose joint end installation hose and use the throat clamp fixed, with a hose clamp 361 pressure hose 370 middle and lower part, filled with propellant slurry cartridge column 350, filled in the cartridge column 350 of the slurry is 100g, install the locking cap 320 on the cartridge column 350. The experimental through the valve two 701 control pressure cylinder will be hose 370 pressure, remove the hose clamp 361, with the pressure plate to lock the cap 320, the locking cap 320 gas pipe joint connection pipe. By adjusting the pressure table on the air compressor (600), set the pressure, through the valve one (700) rotation, the slurry pressure, pressure 0.5~2min, through the control system valve two (701) rotation will be pressure cylinder (370) open, slurry flow, through the high precision electronic scale (380) record slurry weight gain speed, through the thermal imager (400) record multifunctional cartridge column (350) temperature change value, after the experiment through the measurement grid plate (391) slurry injection of the maximum envelope diameter Φ1, spray angle detection in accordance with Figure 7 The way, before the experiment, detect the diameter of the hose (360) Φ2, the distance between the hose (360) and the grid plate (391) L; after the experiment, according to the spray angle Calculated, complete the current pressure setting value of propellant slurry spray angle test;

[0085] Replace the cartridge column (350), adjust the low pressure, continue the above operation, until the n cartridge column (350) complete pressure value P1= M -(n-1)*a propellant slurry spray angle test; adjust the low pressure rule is every 0.1-0.2MPa downward pressure setting value.

[0086] Step three: slurry spray angle test at different temperatures, this verification involves temperature parameters, set the same pressure. The pressure is set to the same value, that is, the pressure value is set to 0.2Mpa according to the actual pressure casting pressure value in the production of the product; according to the actual hopper bottom angle of the manufacturer, select the corresponding angle of the cartridge column; no special requirements, generally selected shrink angle of 80 degrees cartridge column; cartridge column 350 using Figure 4The form shown, the experimental cartridge column hose joint end installation hose and fixed with the throat clamp, with hose clamp 361 tight lower part of the hose 370, filled with propellant slurry cartridge column 350, filled with slurry cartridge column 350 is 100g, install the locking cap 320 on the cartridge column 350. Experimental through the valve two 701 control cylinder tight hose 370 tight, remove the hose clamp 361, with the locking cap 320 pressure plate, connect the air pipe at the air pipe joint of the locking cap 320. By adjusting the temperature controller on the mold temperature machine 500, set the required temperature to 35℃, keep warm for 2 minutes, by rotating the valve two 701 open the cylinder 370, the slurry begins to flow, by high precision electronic scale 380 record slurry weight gain speed, by thermal imager 400 record multifunctional cartridge column 350 temperature change value, spray angle detection according to Figure 7 The way, before the experiment, the required size is measured, and after the experiment, the temperature is calculated.

[0087] Replace the cartridge column 350, adjust the temperature value according to the temperature setting sequence, continue the above operation, until the sixth cartridge column 350 is taken to complete the propellant slurry spray angle test at 60℃; The temperature setting sequence is 35℃, 40℃, 45℃, 50℃, 55℃, 60℃.

[0088] Step four: propellant slurry residue test under different shrinkage angles 354, this verification does not involve temperature parameters, the cartridge column 350 uses Figure 5 The form shown, the experimental cartridge column hose joint end installation hose and fixed with the throat clamp, with hose clamp 361 tight lower part of the hose 370, filled with propellant slurry cartridge column 350, filled with slurry cartridge column 350 is 100g, install the locking cap 320 on the cartridge column 350. Experimental through the valve two 701 control cylinder tight hose 370 tight, remove the hose clamp 361, with the locking cap 320 pressure plate, connect the air pipe at the air pipe joint of the locking cap 320. By adjusting the pressure gauge on the air compressor 600, set the pressure, by rotating the valve one 700, pressurize the slurry, keep pressure for 0.5~2min, by rotating the valve two 701 open the cylinder 370, the slurry begins to flow, until the high precision electronic scale 380 value no longer changes, remove the multifunctional cartridge column, weigh the weight value before and after the test, the difference is the slurry residue, record the temperature change value of the multifunctional cartridge column 350 at the same time;

[0089] Replace the cartridge column 350, continue the above operation, until the nth cartridge column 350 is taken to complete the propellant slurry residue test under different shrinkage angles.

[0090] Step five: the temperature field change test of the propellant slurry when flowing under different parameters. The temperature field monitoring data of the thermal imager in the above research is exported and arranged, so as to obtain the temperature field change of the slurry when flowing under different parameters.

[0091] In the above research, step one mainly verifies the safety of the slurry when breaking vacuum at the end of pouring, whether the slurry can be ignited under the continuous scouring of high-speed airflow. Step two mainly verifies the injection angle of the slurry under different pressures, step three mainly verifies the injection angle of the slurry under different temperatures, and step four mainly verifies the residual amount of the cartridge column under different tapers. Step five mainly monitors the temperature change of the system under different parameters. Since there is no vacuum environment in the experiment, the pressure difference between the upper and lower liquid levels of the slurry is mainly realized by pressurization. The injection angle detection is carried out in the manner of Figure 7 measuring the diameter of the hose 360 , the distance L between the hose 360 and the grid plate 391 before the experiment starts, and measuring the maximum diameter of the slurry spread on the grid plate 391 after the experiment ends , and calculating the injection angle by the calculation formula .

[0092] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-parameter detection device for propellant slurry, characterized in that, The utility model relates to a multi-parameter experiment device, and belongs to the technical field of experiment device. It comprises: a workbench (100), which is provided with two; an explosion-proof wall (200), which is arranged between the two workbenches (100) and is provided with an observation window (201); a multi-parameter experiment device (300), which is placed on the top of the left workbench (100); a thermal imager (400), which is placed on the top of the left workbench (100) and is located on one side of the multi-parameter experiment device (300); a mold temperature controller (500), which is placed on one side of the left workbench (100); and an air compressor (600), which is placed on the other side of the left workbench (100). The multi-parameter experiment device (300) comprises a connecting seat (310), which is provided with a cartridge column (350) at the upper portion; the cartridge column (350) comprises a barrel, a hose joint (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) through the thread (352); the locking cap (320) is provided with an air inlet connected to the air compressor (600) at the upper end; the connecting seat (310) is provided with a compression assembly for compressing a hose (360) arranged at the hose joint (353) to prevent the outflow of medicinal paste; the connecting seat (310) is provided with a medicinal paste receiving disc (390) at the lower portion for receiving the medicinal paste discharged from the hose (360); a grid plate (391) for jet angle detection is placed inside the medicinal paste receiving disc (390); and the medicinal paste receiving disc (390) is placed on a high-precision electronic scale (380). The barrel wall is of a solid structure or a hollow structure; the lower end of the barrel is connected to the hose joint (353) through a contraction angle (354); the mold temperature controller (500) is connected to a circulating water inlet water nozzle (356) and a circulating water outlet water nozzle (355) on the outer wall of the cartridge column (350) with a hollow barrel wall. The compression assembly comprises a compression cylinder (370) arranged on one side of the hose (360) and a baffle (311) arranged on the other side of the hose (360) and cooperating with the compression cylinder (370). The compression assembly further comprises a hose clamp (361) for compressing the hose (360) to prevent the outflow of medicinal paste before the compression cylinder (370) is compressed; the hose clamp (361) is detachably arranged on the hose (360); the right workbench (100) is provided with a rotary valve one (700) and a rotary valve two (701) connected to the air compressor (600); one end of the rotary valve one (700) is connected to the locking cap (320); and one end of the rotary valve two (701) is connected to the compression cylinder (370). Also include control system, the control system is installed on the top of right workstation (100), contains two rotary valves, rotary valve one (700) and rotary valve two (701), rotary valve one controls the pressurization to the cartridge column, rotary valve two controls the advance and retreat of the pressing cylinder (370);Air pipe (800), the control system controls the airflow of pressing cylinder (370) and air compressor (600) through air pipe (800).

2. The multi-parameter detection device for propellant bolus according to claim 1, characterized in that, The upper part of the connecting seat (310) is also provided with a pressing plate (330) for pressing the locking cap (320), and the pressing plate (330) is fixed on the upper part of the connecting seat (310) through a screw rod and a bolt; The pressing plate (330) is provided with two, symmetrically installed on both sides of the locking cap (320).

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

4. A multi-parameter detection method for propellant slurry, characterized in that, The multi-parameter detection device according to any one of claims 1-3 is used for verification, the pressure safety threshold of a certain propellant slurry is measured first, and then the propellant slurry is selected for testing the slurry injection angle under different pressures, the slurry injection angle under different temperatures, and the slurry residue under different contraction angles, while the temperature field change of the pipeline when the propellant slurry flows under different parameters is obtained.

5. The method for multi-parameter detection of propellant bolus according to claim 4, characterized in that, Step one: the steps for measuring the pressure safety threshold of the propellant slurry are A1: prepare n cartridge columns (350) with solid structure of cylinder wall; A2: take the first cartridge column (350), and 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 joint (353) of the cartridge column (350) and fix it with a hose clamp, tighten the upper part of the hose (360) with a hose clamp (361) before the experiment, put the slurry covering the bottom contraction angle (354) into the cartridge column (350), install the locking cap (320) on the cartridge column (350), and tighten the hose (360) by controlling the pressing cylinder (370) through the rotary valve two (701) during the experiment, and remove the hose clamp (361); A4: adjust the pressure regulating table of the air compressor (600) to set the pressure value P of pressurization, rotate the rotary valve one (700) to pressurize the slurry, and keep the pressure for 0.5-2 min, quickly rotate the rotary valve two (701) to open the pressing cylinder (370), and the airflow under the pressure lasts for 50±10s, and the temperature change value of the cartridge column (350) and the hose (360) is recorded; A5: if the slurry is not ignited, it is determined that the pressure safety threshold M of the slurry is greater than A, and the detection is stopped; A6: if the slurry is ignited, take the second cartridge column (350), adjust the pressure, and the pressure value P of the cartridge column (350) is A-a; repeat steps A3 and A4; if the slurry is not ignited, it is determined that the pressure safety threshold M of the slurry is the current pressure value P=A-a, and the detection is stopped; A7: If the propellant charge is ignited, take the third cartridge column (350), adjust the pressure, the pressure value P = A-2*a of the cartridge column (350); repeat steps A3, A4; if the propellant charge is not ignited, determine that the propellant charge pressure safety threshold M is the current pressure value P = A-2*a, stop detection; a = 0.1-0.2Mpa; By analogy, until the nth cartridge column (350) is taken to detect that the propellant charge is not ignited, the pressure P = A-(n-1)*a at this time is the pressure safety threshold M of the propellant charge.

6. The multi-parameter detection method for propellant bolus according to claim 4, wherein, Step two: the steps of detecting the injection angle of the propellant charge under different pressures are B1: prepare a plurality of cartridge columns (350) with solid structure of the cylinder wall, 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 propellant charge; B3: connect the hose (360) at the hose joint (353) of the cartridge column (350) and fix it with a throat clamp, before the experiment, press the upper part of the hose (360) with a hose clamp (361), fill the propellant charge in the cartridge column (350), install the locking cap (320) on the cartridge column (350), during the experiment, press the hose (360) with the pressure cylinder (370) controlled by the valve two (701), remove the hose clamp (361); before the experiment, detect the diameter Φ2 of the hose (360) and the distance L between the hose (360) and the grid plate (391); B4: by adjusting the pressure table on the air compressor (600), set the pressure value of the pressurization = P1, through the valve I (700) rotation, the medicine paste pressurization, pressure 0.5-2 min, through the valve II (701) rotation will be closed, the medicine paste flow through the high-precision electronic scale (380) record the weight of the medicine paste increase speed, through the thermal imager (400) record the temperature change value of the medicine cylinder column (350) and the hose (360), after the experiment through the measurement grid plate (391) medicine paste jet the maximum envelope diameter Φ1, after the experiment through the formula calculation of the jet angle , complete the current pressure set value under the propellant medicine paste jet angle test; B5: take the second cartridge column (350), adjust the pressure, the pressure value P1 of the cartridge column (350) is M-a; a = 0.1-0.2Mpa; Repeat steps B3, B4, by analogy, until the nth cartridge column (350) is taken to complete the propellant charge injection angle test under the pressure value P1 = M-(n-1)*a.

7. The multi-parameter detection method for propellant bolus according to claim 4, characterized in that, Step three: the steps of detecting the injection angle of the propellant charge under different temperatures are C1: prepare a plurality of cartridge columns (350), one cartridge column (350) corresponds to one temperature, the hollow structure of the cartridge column (350) cylinder wall forms a water jacket layer (351), and the circulating water enters the water jacket layer (351) through the circulating water inlet connector (356) and flows out through the circulating water outlet connector (355); Carry out propellant charge injection angle test under different temperatures, which involves temperature parameters, and set the same pressure; C2: connect the hose (360) at the hose joint (353) of the cartridge column (350) and fix it with a throat clamp, before the experiment, press the upper part of the hose (360) with a hose clamp (361), fill the propellant charge in the cartridge column (350), install the locking cap (320) on the cartridge column (350), during the experiment, press the hose (360) with the pressure cylinder (370) controlled by the valve two (701), remove the hose clamp (361); before the experiment, detect the diameter Φ2 of the hose (360) and the distance L between the hose (360) and the grid plate (391); C3: By adjusting the temperature controller on the mold temperature machine (500), set the required temperature T = 35℃, the circulating water is turned on, and the temperature is kept for 8-10 minutes. By rotating the rotary valve two (701), the pressing cylinder (370) is opened, and the slurry starts to flow. By the high-precision electronic scale (380), the weight increase speed of the slurry is recorded. By the thermal imager (400), the temperature change value of the cartridge column (350) and the hose (360) is recorded. After the experiment, the diameter Φ1 of the slurry injection is measured by the grid plate (391), and the injection angle is calculated by the formula The injection angle is calculated, and the propellant slurry injection angle test at this temperature is completed; C4: by analogy, repeat steps C2, C3, until the nth cartridge column (350) is taken to complete the propellant charge injection angle test under the temperature T = 35+(n-1)*5℃.

8. The multi-parameter detection method for propellant bolus according to claim 4, wherein, Step four: the steps of the test of the residual amount of propellant slurry under the different shrinkage angles of the cartridge column are as follows D1: prepare a plurality of cartridge columns (350) with different shrinkage angles; the barrel wall of the cartridge column (350) is a solid structure, and the set pressure value P2 is less than M in the experiment to ensure the flow speed of the propellant slurry, and the first cartridge column (350) is taken; D2: connect the hose (360) to the hose joint (353) of the cartridge column (350) and fix it with a hose clamp, press the upper part of the hose (360) with a hose clamp (361) before the experiment, fill the cartridge column (350) with propellant slurry, install the locking cap (320) on the cartridge column (350), and press the hose (360) with the pressure cylinder (370) by controlling the valve two (701) during the experiment, and remove the hose clamp (361); D3: set the pressure value P2 on the pressure regulating table of the air compressor (600), press the propellant slurry by rotating the valve one (700), and keep the pressure for 0.5-2 min, open the pressure cylinder (370) by rotating the valve two (701), and the propellant slurry starts to flow until the value of the high-precision electronic scale (380) no longer changes, remove the cartridge column, weigh the weight value before and after the experiment, and the difference is the residual amount of the propellant slurry, and record the temperature change value of the cartridge column (350) and the hose (360) at the same time, complete the test of the residual amount of the propellant slurry under the different shrinkage angles; D4: repeat steps D2 and D3 in turn until the nth cartridge column (350) is taken to complete the test of the residual amount of the propellant slurry under the different shrinkage angles.

9. The multi-parameter detection method for propellant bolus according to claim 6, wherein, The temperature field monitoring data of the thermal imager in step two is exported and sorted to obtain the temperature field change of the propellant slurry when flowing under different parameters.

10. The method for multi-parameter detection of propellant bolus according to claim 7, wherein, The temperature field monitoring data of the thermal imager in step three is exported and sorted to obtain the temperature field change of the propellant slurry when flowing under different parameters.

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