An auxiliary decision system and method for the preparation phase of a high-altitude simulation test system

Abstract

The application discloses a kind of high-altitude simulation test system preparation phase auxiliary decision system and method, for solving the preparation process of existing high-altitude simulation test system prone to human error, and system appears problem when difficult to locate, and other technical problems such as difficult to troubleshoot.The auxiliary decision system includes control unit, acquisition unit, receiving unit and interpretation unit;Control unit connects high-altitude simulation test system, and corresponding test instruction is sent to high-altitude simulation test system in turn according to test preparation process;Acquisition unit includes state monitoring module and parameter measurement module connected with control unit respectively;The input end of receiving unit is connected with state monitoring module and parameter measurement module respectively, and the output end is connected with interpretation unit, and receiving unit is used to receive the process parameters output by state monitoring module and parameter measurement module, and is transmitted to interpretation unit;Interpretation unit is used to interpret process parameters and output interpretation result.The system can greatly improve test preparation efficiency.

Description

Technical Field

[0001] This invention relates to high-altitude simulation tests of liquid rocket engines, and more specifically to an auxiliary decision-making system and method for the preparation phase of a high-altitude simulation test system. Background Technology

[0002] During the development of rocket engines, it is necessary to know their performance under actual operating conditions. This is generally achieved through high-altitude simulation tests to simulate the vacuum environment at high altitudes and verify the engine's stability, reliability, and safety under various extreme operating conditions. By conducting high-altitude simulation tests in a controlled environment, the engine development cycle can be greatly shortened. Therefore, high-altitude simulation tests are of paramount importance to rocket engine development.

[0003] High-altitude simulation testing requires a separate high-altitude simulation test system (hereinafter referred to as the test system) independent of the engine system. This system includes an ejector system and a generator system. The generator ignition test creates the vacuum environment required for engine ignition. Due to the complexity of the test system's structure, the generator ignition test process is extremely cumbersome. Furthermore, the existing generator and ejector system ignition test preparation processes have low levels of digitization and automation, and the control of the test system's status and the test preparation process heavily relies on the commander. This preparation process requires not only process personnel to check the medium levels in the various container tanks, but also the cooperation of the commander, control personnel, measurement personnel, and process personnel. The commander issues commands, control personnel operate the valves, process personnel check the system status, measurement personnel report relevant system parameter values, and finally, the commander decides whether each step of the process is complete.

[0004] Therefore, commanders need to be constantly aware of the current status of the test system, promptly identify and correctly handle any abnormalities to ensure the safety of the test system and control of test milestones. This not only places extremely high demands on the commander's abilities and focus but also increases their mental stress and burden, and is prone to unforeseen problems caused by human error. Furthermore, if problems arise in the test system during test preparation, troubleshooting is often difficult and the problem is hard to pinpoint, requiring the current work to be suspended and a large amount of manpower to thoroughly inspect the system, thus delaying the work progress. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problems of human error in the preparation process of existing high-altitude simulation test systems, as well as the difficulty in troubleshooting and locating problems when they occur, and to provide an auxiliary decision-making system and method for the preparation stage of a high-altitude simulation test system.

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0007] An auxiliary decision-making system for the preparation stage of a high-altitude simulation test system is characterized by including a control unit, an acquisition unit, a receiving unit, and an interpretation unit.

[0008] The control unit is used to connect to the high-altitude simulation test system and send corresponding test commands to the high-altitude simulation test system in sequence according to the test preparation process;

[0009] The acquisition unit includes a status monitoring module and a parameter measurement module, which are respectively connected to the control unit. The status monitoring module is used to monitor and acquire the process parameters of each component of the high-altitude simulation test system during the non-ignition period. The parameter measurement module is used to acquire the process parameters of the steam generator system and the ejector system in the high-altitude simulation test system.

[0010] The input end of the receiving unit is connected to the status monitoring module and the parameter measurement module respectively, and the output end is connected to the interpretation unit. The receiving unit is used to receive the process parameters output by the status monitoring module and the parameter measurement module and transmit them to the interpretation unit.

[0011] The interpretation unit is used to interpret the process parameters and output the interpretation results.

[0012] Furthermore, it also includes a display unit, which is connected to the judgment unit and is used to display the judgment results in real time.

[0013] Furthermore, the status monitoring module includes a status monitoring computer, and at least one valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor respectively connected to the status monitoring computer; the valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor are respectively installed on each component of the high-altitude simulation test system to collect corresponding status information; the status monitoring computer is used to receive the status information output by the valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor and parse it to obtain the corresponding process parameters;

[0014] The parameter measurement module includes a data acquisition computer, and multiple voltage and current acquisition devices connected to the data acquisition computer. The multiple voltage and current acquisition devices are connected to the high-altitude simulation test system to collect the operating parameter information of its steam generator system and ejector system. The data acquisition computer receives the operating parameter information output by each voltage and current acquisition device and parses it to obtain the corresponding process parameters.

[0015] The condition monitoring computer and the data acquisition computer respectively output the corresponding process parameters to the receiving unit.

[0016] This invention also provides an auxiliary decision-making method for the preparation stage of a high-altitude simulation test system, comprising the following steps:

[0017] Step 1: Assemble the auxiliary decision-making system for the preparation stage of the above-mentioned high-altitude simulation test system, and preload the reference information of each process parameter in the test preparation stage into the interpretation unit;

[0018] Step 2: Collect the process parameters of each component of the high-altitude simulation test system during non-ignition periods through the status monitoring module, and transmit them to the interpretation unit via the receiving unit. The interpretation unit determines whether the process parameters are consistent with the preset process parameters. If they are inconsistent, it will indicate the abnormality and the location of the abnormality, and proceed to step 3; if they are consistent, proceed to step 4. The process parameters during non-ignition periods include the liquid oxygen tank medium volume, alcohol tank medium volume, ignition alcohol medium volume, softened water tank level, and cooling water tank level.

[0019] Step 3: Manually inspect and adjust the location of the anomaly according to the prompts, then return to Step 2;

[0020] Step 4: The control unit sends corresponding test commands to the high-altitude simulation test system. The corresponding process parameters are collected through the status monitoring module and parameter measurement module and transmitted to the interpretation unit via the receiving unit. The interpretation unit judges whether the process parameters are consistent with the preset process parameters. If they are consistent, it means that it is normal; if they are inconsistent, it will indicate an abnormality or indicate the location of the abnormality. After manual inspection and adjustment, the test is repeated until it is normal, thus completing the auxiliary decision-making in the preparation stage of the high-altitude simulation test system.

[0021] Furthermore, step 4 specifically includes the following steps:

[0022] 4.1 The control unit sends a unit test command to the high-altitude simulation test system. The opening and closing times of each valve during the unit test are collected by the status monitoring module and transmitted to the judgment unit via the receiving unit. The judgment unit judges whether the action of each valve is normal. If it is normal, step 4.2 is executed; otherwise, the abnormality and the location of the abnormality are indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.2 is executed.

[0023] 4.2 The control unit sends a comprehensive test command to the high-altitude simulation test system. The parameter measurement module collects the measurement parameters of the steam generator system and the ejector system during the comprehensive test, and transmits them to the interpretation unit via the receiving unit. The interpretation unit judges whether the mean value, channel noise, and zero point of the measurement parameters meet the preset requirements. If they do, step 4.3 is executed; otherwise, an abnormality is indicated and the location of the abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.3 is executed.

[0024] 4.3 The control unit sends a cooling water drain check command to the high-altitude simulation test system. The parameter measurement module collects the flow rate and pressure of the ejector system during the cooling water drain process and transmits them to the judgment unit via the receiving unit. The judgment unit determines whether the average value of the flow rate stability segment and the average value of the pressure stability segment are within the preset requirement range. If so, step 4.4 is executed; otherwise, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.4 is executed.

[0025] 4.4 The control unit sends a softened water circuit discharge check command to the high-altitude simulation test system. The parameter measurement module collects the flow rate and pump inlet pressure of the steam generator system during the softened water discharge process, and transmits them to the judgment unit via the receiving unit. The judgment unit determines whether the flow rate and pump inlet pressure are within the preset requirement range. If so, step 4.5 is executed; otherwise, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.5 is executed.

[0026] 4.5 The control unit sends a system-wide vacuuming command to the high-altitude simulation test system. The parameter measurement module collects the vacuum pressure values ​​of various parts of the ejector system during the vacuuming process and transmits them to the interpretation unit via the receiving unit. The interpretation unit determines whether the pressure value and the pressure drop rate are within the preset requirements. If so, step 4.6 is executed; otherwise, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.6 is executed.

[0027] 4.6 The control unit sends an alcohol pipeline filling and discharging command to the high-altitude simulation test system. The parameter measurement module collects the flow and pressure parameters of the steam generator system during the alcohol pipeline filling and discharging process, and transmits them to the interpretation unit via the receiving unit. The interpretation unit calculates the current system flow resistance and flow coefficient, and determines whether these parameters are within the preset range. If so, step 4.7 is executed; otherwise, an abnormality is indicated, and the system is manually inspected and adjusted before being tested again until normal operation is achieved, and then step 4.7 is executed.

[0028] 4.7 The control unit sends a nitrogen purging command for the liquid oxygen pipeline to the high-altitude simulation test system. The parameter measurement module collects the liquid oxygen flow rate parameters and the pressure parameters before the liquid oxygen orifice of the steam generator system during the nitrogen purging process. These parameters are then transmitted to the interpretation unit via the receiving unit. The interpretation unit determines whether the liquid oxygen flow rate parameters and the pressure parameters before the liquid oxygen orifice are within the preset requirements. If they are, it indicates normal operation; otherwise, it indicates an abnormality. After manual inspection and adjustment, the system is tested again until it returns to normal, thus completing the auxiliary decision-making in the preparation stage of the high-altitude simulation test system.

[0029] Furthermore, in step 4.6, the flow parameters include alcohol flow rate and ignition alcohol flow rate;

[0030] The pressure parameters include alcohol tank pressure, ignition alcohol tank pressure, alcohol pre-spray pressure, and ignition alcohol pre-spray pressure.

[0031] The system flow resistance includes the alcohol system flow resistance and the ignition alcohol system flow resistance; the flow coefficient includes the alcohol system flow coefficient and the ignition alcohol system flow coefficient.

[0032] Furthermore, in step 4.7, before collecting the liquid oxygen flow rate parameters and the liquid oxygen inlet pressure parameters during the nitrogen replacement process in the liquid oxygen pipeline using the parameter measurement module, the following is also included:

[0033] The proximity switch voltage of the liquid oxygen main valve during nitrogen purging in the liquid oxygen pipeline is collected by the status monitoring module and transmitted to the interpretation unit via the receiving unit. The interpretation unit determines whether the action time of the liquid oxygen main valve is within the preset requirement range. If it is, it means that it is normal; otherwise, it indicates an abnormality. After manual inspection and adjustment, it is tested again until it is normal.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] 1. This invention provides an auxiliary decision-making system for the preparation stage of a high-altitude simulation test system, comprising a control unit, a data acquisition unit, a receiving unit, and an interpretation unit. The control unit sends corresponding test commands to the high-altitude simulation test system, while the data acquisition unit synchronously acquires relevant process parameters and transmits them to the interpretation unit via the receiving unit. Finally, the interpretation unit interprets the process parameters during the test. This invention, through the linkage between the control unit and the high-altitude simulation test system, automatically advances the test preparation process, reduces the time spent on manual observation and judgment, improves the degree of automation, thereby increasing test preparation efficiency and significantly shortening test preparation time.

[0036] 2. The auxiliary decision-making system for the preparation stage of a high-altitude simulation test system provided by this invention can reduce labor costs, reduce the number of required personnel, and free up human resources.

[0037] 3. The present invention provides an auxiliary decision-making method for the preparation stage of a high-altitude simulation test system. By preloading reference information of various process parameters in the test preparation stage into the interpretation unit, the control unit autonomously issues test commands, and the interpretation unit autonomously interprets the received process parameters, thereby reducing the probability of misalignment caused by manual operation and improving the effectiveness and reliability of the preparation stage inspection.

[0038] 4. The auxiliary decision-making method for the preparation stage of a high-altitude simulation test system provided by this invention has universality. For similar tests, the corresponding test program can be loaded into the control unit. At the same time, a historical database can be established to make the data more transparent and easier to track, and to detect anomalies in a timely manner. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of an embodiment of an auxiliary decision-making system for the preparation stage of a high-altitude simulation test system according to the present invention. Detailed Implementation

[0040] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] like Figure 1 As shown, this embodiment provides an auxiliary decision-making system for the preparation stage of a high-altitude simulation test system, including a control unit, a data acquisition unit, a receiving unit, and an interpretation unit.

[0042] The control unit is connected to the high-altitude simulation test system and is used to send corresponding test commands to the high-altitude simulation test system in sequence according to the test preparation process.

[0043] The acquisition unit includes a status monitoring module and a parameter measurement module, both connected to the control unit. The status monitoring module monitors and acquires the process parameters of each component of the high-altitude simulation test system during non-ignition periods. The parameter measurement module acquires the key process parameters of the steam generator system and the ejector system within the high-altitude simulation test system.

[0044] The status monitoring module in this embodiment includes a status monitoring computer, and at least one valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor connected to the status monitoring computer via TCP / IP protocol. These are used to monitor and collect data on tank pressure, tank level, soft water tank level, cooling water tank level, liquid oxygen pipeline pressure, liquid oxygen pipeline temperature, and the status of key valves. The status monitoring computer receives status information from the valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor of each component of the high-altitude simulation test system, parses the corresponding process parameters from this status information, and forwards it to the receiving unit.

[0045] The parameter measurement module includes a data acquisition computer and multiple voltage and current acquisition devices connected to the data acquisition computer, which are used to measure the voltage and current parameters of each generator and ejector device, respectively. The data acquisition computer is used to receive the operating parameter information of the steam generator system and ejector system output by each voltage and current acquisition device, and then parse the corresponding process parameters from the operating parameter information and forward them to the receiving unit.

[0046] The input end of the receiving unit is connected to the status monitoring computer and the acquisition computer respectively, and the output end is connected to the interpretation unit. The receiving unit is used to receive the process parameters output by the status monitoring module and the parameter measurement module and transmit them to the interpretation unit.

[0047] The interpretation unit is used to interpret the process parameters and output the interpretation results.

[0048] To improve testing efficiency, this embodiment also includes a display unit, which is connected to the interpretation unit and is used to display the interpretation results in real time, so that operators can obtain the test results in real time.

[0049] Based on this, this embodiment also provides an auxiliary decision-making method for the preparation stage of a high-altitude simulation test system, including the following steps:

[0050] Step 1: Assemble the auxiliary decision-making system for the preparation stage of the above-mentioned high-altitude simulation test system, and preload all test programs for the test preparation stage (pre-compiled according to test needs) into the control unit, and load the reference information of each process parameter for the test preparation stage into the interpretation unit.

[0051] This embodiment takes the joint operation of generators A and B as an example. First, it is necessary to set the generator and ejector system to use groups A and B, with an operating time of t seconds, and calculate the minimum liquid oxygen consumption as V. myy The minimum alcohol consumption is V. mjj The minimum alcohol consumption for ignition is V. mdj The minimum consumption of softened water is V. mrhs Minimum cooling water consumption V mll This process can also be calculated by the decision support system described in this embodiment.

[0052] Subsequently, all test programs from the test preparation phase are loaded into the auxiliary decision-making system. The test programs described in this embodiment include unit test programs, integrated test programs, cooling water draining inspection programs, softened water draining inspection programs, full system vacuuming programs, alcohol pipeline filling and draining programs, and liquid oxygen pipeline nitrogen replacement programs.

[0053] Step 2: Collect the process parameters of each component of the high-altitude simulation test system during the non-ignition period through the status monitoring module, and transmit them to the interpretation unit through the receiving unit. The interpretation unit determines whether the process parameters are consistent with the preset process parameters. If they are inconsistent, it will indicate the abnormality and the location of the abnormality, and proceed to step 3; if they are consistent, proceed to step 4. The process parameters during the non-ignition period include the liquid oxygen tank medium volume, alcohol tank medium volume, ignition alcohol medium volume, softened water tank level, and cooling water tank level.

[0054] Step 3: Manually check and adjust the location of the anomaly according to the prompts, then return to Step 2.

[0055] This step mainly involves checking the readiness of the ignition medium in the ejector system, specifically:

[0056] The condition monitoring computer acquires the current liquid oxygen tank level H from the outputs of each sensor. yy Alcohol tank level H jj Ignition alcohol level H dj Softening water tank level H rhs With cooling water level H ll And calculate the current medium storage volume, i.e., the liquid oxygen storage tank medium volume V. yy , alcohol storage tank medium volume V jj Ignition alcohol medium quantity V dj Softening water tank water volume V rhs With cooling water volume V ll The data is then transmitted from the receiving unit to the judging unit, where it is judged. When V... yy ≥V myy V jj ≥V mjj V dj ≥V mdj V rhs ≥V mrhs V ll ≥V mll When the reading is complete, it indicates that the ignition medium readiness status check of the ejector system is finished. If any reading result does not meet the requirements, the operator shall conduct an on-site inspection and adjustment, and then repeat the above inspection process until all results meet the requirements.

[0057] Step 4: The control unit sends corresponding test commands to the high-altitude simulation test system according to the test program. It collects the corresponding process parameters through the status monitoring module and parameter measurement module, and transmits them to the interpretation unit through the receiving unit. The interpretation unit judges whether the process parameters are consistent with the preset process parameters. If they are consistent, it means that it is normal; if they are inconsistent, it will indicate an abnormality or indicate the location of the abnormality. After manual inspection and adjustment, the test is repeated until it is normal, thus completing the auxiliary decision-making in the preparation stage of the high-altitude simulation test system.

[0058] The following is a detailed explanation of the testing process in step 4:

[0059] 4.1 Unit Testing

[0060] The control unit sends test commands for generator unit A to the high-altitude simulation test system. During the test, the status monitoring module collects the proximity switching voltages of each valve and calculates the valve opening and closing times t. x_on , t x_offThe data is then transmitted from the receiving unit to the interpretation unit, which determines whether the operation of each valve is normal. The interpretation can be based on the historical operation time of the corresponding valve. If normal, proceed to step 4.2; otherwise, an error message and the name of the abnormal valve are displayed. After manual inspection and adjustment, the test is repeated until normal operation is achieved, and then step 4.2 is executed. At this point, the unit test of generator group A is complete. Then, the unit test of generator group B is completed using the same method. Only if all tests are normal can step 4.2 be executed.

[0061] 4.2 Comprehensive Test

[0062] The control unit sends A / B group integrated test commands to the high-altitude simulation test system, and collects the key test pressure parameters P of the steam generator system and ejector system of groups A and B during the A / B group integrated test through the parameter measurement module. i (The parameter measurement module's acquisition channel parameters contain a set P of several key test pressure parameters, P = {P1, P2, ..., P...} n},P i ∈P, such as the alcohol tank pressure P mentioned later. jj1 The pressure parameter P was calculated. i The mean value, channel noise, and zero point are received and transmitted to the interpretation unit, which then determines the pressure parameter P. i If the mean, channel noise, and zero point meet the preset requirements, proceed to step 4.3; otherwise, indicate the abnormality and the location of the abnormality. After manual inspection and adjustment, test again until normal, and then proceed to step 4.3.

[0063] In this step, the pressure parameter P i The mean μ refers to the arithmetic mean of all pressure samples within the sampling period, reflecting the central tendency of the measurement data. For a specific measurement parameter P (such as the pressure P in an alcohol tank), jj1 First, determine the total number of sampling points: the sampling rate is R (unit: Hz, i.e., times / second), and the sampling duration is t (unit: seconds). Therefore, the total number of sampling points is N = R·t (N is an integer representing the number of sampling points). Let the pressure value of the i-th sampling be P. i (i = 1, 2, ..., N), then the mean

[0064] Zero point b refers to the output value of the parameter measurement module when there is zero pressure input (actual pressure is 0), which is the zero-point offset of the system and needs to be sampled and measured under zero pressure conditions. Let the i-th sample value under zero pressure input conditions be P. 0,i (i = 1, 2, ..., N), the total number of sampling points is still N = R·t, then the zero position

[0065] Noise σ refers to the random fluctuation portion of a measured value after deducting the mean (or zero point). Its magnitude is usually quantified by the standard deviation (reflecting the severity of the fluctuation).

[0066] For noise in typical pressure measurements (fluctuations relative to the mean):

[0067] For noise near zero (more commonly used relative to fluctuations at zero):

[0068] All measurement parameters are checked and interpreted according to the above method. If all measurement parameters included in the comprehensive test program are normal, proceed to the next step; otherwise, the abnormal parameter name is displayed, and the test is repeated after manual inspection and adjustment until all parameters are normal.

[0069] 4.3 Cooling water drain check

[0070] The control unit sends a cooling water drain check command to the A and B group ejector systems of the high-altitude simulation test system, and collects the cooling water flow rate Q of group A through the parameter measurement module. all Group B cooling water flow rate Q bll Group A cooling water pressure P all Group B cooling water pressure P bll And calculate Q all Q bll P all P bll The average value of the stable flow segment is then transmitted from the receiving unit to the judging unit. The judging unit determines whether the average value of the stable flow segment and the average value of the stable pressure segment are within the preset requirement range (i.e., within the historical lower and lower limits). If the above average values ​​are within the preset requirement range, then step 4.4 is executed; if there is an error, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and then step 4.4 is executed.

[0071] 4.4 Softening water circuit drain inspection

[0072] The control unit sends a water discharge check command to the softened water circuit of the Group A steam generator system to the high-altitude simulation test system, and collects the Group A softened water flow rate Q during the softened water discharge process through the parameter measurement module. arhs Group A softened water pump inlet pressure P asbq And calculate Q arhs P asbqThe average value of the stable segment is then transmitted from the receiving unit to the interpretation unit. The interpretation unit determines whether the flow rate and the pressure before the pump are within the preset requirement range (historical lower and lower limits). If so, the softened water circuit of the B group steam generator system is drained according to the above method. If both groups are normal, step 4.5 is executed. If either group exceeds the tolerance, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until normal, and step 4.5 is executed.

[0073] 4.5 Vacuuming of the entire system

[0074] The control unit sends a system-wide vacuum command to the high-altitude simulation test system, and collects the vacuum chamber pressure P of the ejector system during the vacuuming process through the parameter measurement module. zk diffuser pressure P k Water spray cooling device pressure P p Group A tube bundle cooler inlet pressure P aqj The outlet pressure P of the group A tube bundle cooler ahj The inlet pressure P of the group B tube bundle cooler bqj The outlet pressure P of the group B tube bundle cooler bhj The pressure value is calculated at a rate of decrease (obtained by differentiation), and then transmitted to the interpretation unit via the receiving unit. The interpretation unit determines whether the pressure value and the rate of decrease are within the preset range. If so, step 4.6 is executed; otherwise, an abnormality is indicated, and the pressure is manually checked and adjusted before being tested again until it is normal, and then step 4.6 is executed.

[0075] In this step, the judgment method of the judgment unit is as follows: through P zk The time taken to reach the nodes of 80kPa, 60kPa, 40kPa, 20kPa, 10kPa, and 2kPa is compared with historical data. If the corresponding pressure value and pressure drop rate are within the range of historical data and the consistency is good, then proceed to step 4.6.

[0076] 4.6. Filling and draining the alcohol pipeline

[0077] The control unit sends the alcohol pipeline filling and discharging command of group AB to the high-altitude simulation test system. The parameter measurement module collects the flow and pressure parameters of group AB water vapor generator system during the alcohol pipeline filling and discharging process, and calculates the current system flow resistance and the corresponding flow coefficient. The data is then transmitted to the interpretation unit via the receiving unit. The interpretation unit calculates the current system flow resistance and flow coefficient and determines whether the system flow resistance and flow coefficient are within the preset requirements. If so, step 4.7 is executed; otherwise, an abnormality is indicated, and the system is manually checked and adjusted before being tested again until it is normal, and then step 4.7 is executed.

[0078] In this step, the flow parameters include the alcohol flow rate Q. fj And the ignition alcohol flow rate Q dj Pressure parameters include the alcohol tank pressure P. jj1 ignition alcohol storage tank pressure P jj2 Alcohol spray pressure P fj1 and the pressure P before ignition of alcohol spray dj1 The system flow resistance includes the flow resistance of the alcohol system and the flow resistance of the ignition alcohol system; the flow coefficient includes the flow coefficient of the alcohol system and the flow coefficient of the ignition alcohol system.

[0079] Alcohol system flow resistance ΔP fj =P jj1 -P fj1 ;

[0080] Alcohol system flow coefficient

[0081] Flow resistance ΔP of ignition alcohol system dj =P jj2 -P dj1 ;

[0082] Flow rate of ignition alcohol system

[0083] 4.7 Nitrogen purging of liquid oxygen pipeline

[0084] The control unit sends nitrogen purging commands for the liquid oxygen pipelines of groups A and B to the high-altitude simulation test system. The status monitoring module collects the proximity switch voltage of the liquid oxygen main valve of the group A and group B steam generator systems during the nitrogen purging of the liquid oxygen pipeline, and calculates the action time t of the liquid oxygen main valve of group A. ay Group B liquid oxygen main valve action time t by The data is then transmitted from the receiving unit to the interpretation unit, which determines whether the action time of the liquid oxygen main valve is within the preset requirement range. If it is within the normal range, the following steps continue; if it exceeds the tolerance, the process is paused, and the operator checks, adjusts, and then tests again until it is normal.

[0085] Next, the liquid oxygen flow rate Q of the steam generator systems in groups A and B during the nitrogen purging process in the liquid oxygen pipeline was collected through the parameter measurement module. yy Group A liquid oxygen inlet pressure P afyk Group B liquid oxygen inlet pressure P bfyk The data is then transmitted from the receiving unit to the interpretation unit, which determines whether the liquid oxygen flow rate parameters and the liquid oxygen inlet pressure parameters are within the preset requirements. If they are, it indicates normal operation; otherwise, it indicates an abnormality. After manual inspection and adjustment, the test is repeated until it is normal, thus completing the auxiliary decision-making in the preparation stage of the high-altitude simulation test system.

[0086] After the above checks are completed, a final status check can be arranged, focusing on the aforementioned abnormalities. Only after all preparation steps are normal can the final preparations before driving begin.

[0087] This invention reduces the workload of commanders by establishing a digital test status process control system, assists commanders in making command decisions, improves the preparation efficiency of high-altitude simulation tests, rationalizes test preparation work, automates key start-up judgments, and ultimately improves the reliability and efficiency of the test preparation process.

[0088] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A decision-making support method for the preparation stage of a high-altitude simulation test system, characterized in that, Includes the following steps: Step 1: Assemble the auxiliary decision-making system for the preparation stage of the high-altitude simulation test system, and preload the reference information of each process parameter in the test preparation stage into the interpretation unit; The auxiliary decision-making system for the preparation phase of the high-altitude simulation test system includes a control unit, an acquisition unit, a receiving unit, an interpretation unit, and a display unit. The control unit connects to the high-altitude simulation test system and sends corresponding test commands to it sequentially according to the test preparation process. The acquisition unit includes a status monitoring module and a parameter measurement module connected to the control unit. The status monitoring module monitors and acquires the process parameters of each component of the high-altitude simulation test system during non-ignition periods. The parameter measurement module acquires the process parameters of the steam generator system and the ejector system within the high-altitude simulation test system. The receiving unit's input is connected to both the status monitoring module and the parameter measurement module, and its output is connected to the interpretation unit. The receiving unit receives the process parameters output by the status monitoring module and the parameter measurement module and transmits them to the interpretation unit. The interpretation unit interprets the process parameters and outputs the interpretation results. The status monitoring module includes a status monitoring computer, and at least one valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor respectively connected to the status monitoring computer; the valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor are respectively installed on each component of the high-altitude simulation test system to collect corresponding status information; the status monitoring computer is used to receive the status information output by the valve proximity switch, pressure sensor, liquid level sensor, and temperature sensor and parse it to obtain the corresponding process parameters. The parameter measurement module includes a data acquisition computer, and multiple voltage and current acquisition devices connected to the data acquisition computer. The multiple voltage and current acquisition devices are connected to the high-altitude simulation test system to acquire operating parameter information of its steam generator system and ejector system. The data acquisition computer receives the operating parameter information output by each voltage and current acquisition device and parses it to obtain the corresponding process parameters. The status monitoring computer and the data acquisition computer each output the corresponding process parameters to the receiving unit. Step 2: Collect the process parameters of each component of the high-altitude simulation test system during non-ignition periods through the status monitoring module, and transmit them to the interpretation unit via the receiving unit. The interpretation unit determines whether the process parameters are consistent with the preset process parameters. If they are inconsistent, it will indicate the abnormality and the location of the abnormality, and proceed to step 3; if they are consistent, proceed to step 4. The process parameters during non-ignition periods include the liquid oxygen tank medium volume, alcohol tank medium volume, ignition alcohol medium volume, softened water tank level, and cooling water tank level. Step 3: Manually inspect and adjust the location of the anomaly according to the prompts, then return to Step 2; Step 4: The control unit sends corresponding test commands to the high-altitude simulation test system. It collects relevant process parameters through the status monitoring module and parameter measurement module, and transmits them to the interpretation unit via the receiving unit. The interpretation unit determines whether the process parameters match the preset process parameters. If they match, it indicates normal operation; if they do not match, it indicates an abnormality or the location of the abnormality. After manual inspection and adjustment, the system is retested until normal operation is achieved, thus completing the auxiliary decision-making process in the preparation phase of the high-altitude simulation test system. Specifically: 4.1 The control unit sends a unit test command to the high-altitude simulation test system. The opening and closing times of each valve during the unit test are collected by the status monitoring module and transmitted to the interpretation unit via the receiving unit. The interpretation unit judges whether the action of each valve is normal. If it is normal, step 4.2 is executed; otherwise, the abnormality and the location of the abnormality are indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.2 is executed. 4.2 The control unit sends a comprehensive test command to the high-altitude simulation test system. The parameter measurement module collects the measurement parameters of the steam generator system and the ejector system during the comprehensive test, and transmits them to the interpretation unit via the receiving unit. The interpretation unit judges whether the mean value, channel noise, and zero point of the measurement parameters meet the preset requirements. If they do, step 4.3 is executed; otherwise, an abnormality is indicated and the location of the abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.3 is executed. 4.3 The control unit sends a cooling water drain check command to the high-altitude simulation test system. The parameter measurement module collects the flow rate and pressure of the ejector system during the cooling water drain process and transmits them to the judgment unit via the receiving unit. The judgment unit determines whether the average value of the flow rate stability segment and the average value of the pressure stability segment are within the preset requirement range. If so, step 4.4 is executed; otherwise, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.4 is executed. 4.4 The control unit sends a softened water circuit discharge check command to the high-altitude simulation test system. The parameter measurement module collects the flow rate and pump inlet pressure of the steam generator system during the softened water discharge process, and transmits them to the judgment unit via the receiving unit. The judgment unit determines whether the flow rate and pump inlet pressure are within the preset requirement range. If so, step 4.5 is executed; otherwise, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.5 is executed. 4.5 The control unit sends a system-wide vacuuming command to the high-altitude simulation test system. The parameter measurement module collects the vacuum pressure values ​​of various parts of the ejector system during the vacuuming process and transmits them to the interpretation unit via the receiving unit. The interpretation unit determines whether the pressure value and pressure drop rate are within the preset requirements. If so, step 4.6 is executed; otherwise, an abnormality is indicated. After manual inspection and adjustment, the test is repeated until it is normal, and step 4.6 is executed. 4.6 The control unit sends an alcohol pipeline filling and discharging command to the high-altitude simulation test system. The parameter measurement module collects the flow and pressure parameters of the steam generator system during the alcohol pipeline filling and discharging process, and transmits them to the interpretation unit via the receiving unit. The interpretation unit calculates the current system flow resistance and flow coefficient, and determines whether these parameters are within the preset range. If so, step 4.7 is executed; otherwise, an abnormality is indicated, and the system is manually inspected and adjusted before being tested again until normal operation is achieved, and then step 4.7 is executed. 4.7 The control unit sends a nitrogen purging command for the liquid oxygen pipeline to the high-altitude simulation test system. The parameter measurement module collects the liquid oxygen flow rate parameters and the pressure parameters before the liquid oxygen orifice of the steam generator system during the nitrogen purging process. These parameters are then transmitted to the interpretation unit via the receiving unit. The interpretation unit determines whether the liquid oxygen flow rate parameters and the pressure parameters before the liquid oxygen orifice are within the preset requirements. If they are, it indicates normal operation; otherwise, it indicates an abnormality. After manual inspection and adjustment, the system is tested again until it returns to normal, thus completing the auxiliary decision-making in the preparation stage of the high-altitude simulation test system.

2. The auxiliary decision-making method for the preparation stage of the high-altitude simulation test system according to claim 1, characterized in that: In step 4.6, the flow parameters include alcohol flow rate and ignition alcohol flow rate; The pressure parameters include alcohol tank pressure, ignition alcohol tank pressure, alcohol pre-spray pressure, and ignition alcohol pre-spray pressure. The system flow resistance includes the alcohol system flow resistance and the ignition alcohol system flow resistance; the flow coefficient includes the alcohol system flow coefficient and the ignition alcohol system flow coefficient.

3. The auxiliary decision-making method for the preparation stage of the high-altitude simulation test system according to claim 2, characterized in that: Step 4.7, before collecting the liquid oxygen flow rate parameters and the liquid oxygen inlet pressure parameters during the nitrogen purging process in the liquid oxygen pipeline using the parameter measurement module, also includes: The proximity switch voltage of the liquid oxygen main valve during nitrogen purging in the liquid oxygen pipeline is collected by the status monitoring module and transmitted to the interpretation unit via the receiving unit. The interpretation unit determines whether the action time of the liquid oxygen main valve is within the preset requirement range. If it is, it means that it is normal; otherwise, it indicates an abnormality. After manual inspection and adjustment, it is tested again until it is normal.

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