A rocket leakage test method and system
By introducing switches and resistors into the rocket leakage test circuit, leakage testing of M+ busbar and shell and M-busbar and shell is achieved, solving the problem that the existing technology cannot test both cases at the same time, and providing a more comprehensive pre-injection leakage monitoring.
Patent Information
- Application Number
- CN202411960792.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-04-04
AI Technical Summary
The existing rocket leakage testing methods cannot test the leakage resistance between the M+ busbar and the shell and the M-busbar and the shell at the same time, resulting in the inability to provide a more comprehensive pre-injection leakage monitoring.
A rocket leakage testing method and system is designed, and the leakage testing of the negative bus and the positive bus and the shell is realized by introducing switches K1 to K3 and resistors R1 and R2 in the test circuit.
This method can realize leakage testing of M+ busbar to shell and M-busbar to shell, provide more comprehensive pre-air leakage monitoring, and ensure that the leakage status before rocket launch is comprehensively evaluated.
Smart Images
Figure CN119758174A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of rockets, and in particular, to a method and system for testing leakage of rockets. Background Art
[0002] Leakage is the most common fault during the test and launch of a launch vehicle. An effective leakage fault test method can quickly detect the leakage status of the rocket and provide an important basis for the leakage status assessment before the rocket launch. Figure 1 As shown, it is a traditional leakage test circuit, which can only test the leakage resistance between the negative bus or the positive bus and the shell. The leakage resistance between the negative bus and the shell is tested as an example. K1 is the M+ control switch, and K2 is the M- control switch. R1 is a current limiting resistor, R2 is a sampling resistor, and R3 is the leakage resistance when there is leakage. The testing principle of this circuit is to connect the M+ voltage to the rocket shell through a current limiting resistor and a sampling resistor. When there is a leakage resistance R3 between the shell and the negative bus, a loop will be formed. The value of the leakage resistance R3 can be calculated by the voltage across the sampling resistor R2. However, this circuit cannot test the leakage resistance value between M+ and the shell. Due to design reasons, when testing the leakage resistance between M+ and the shell, a loop cannot be formed through the sampling resistor R2, so the leakage resistance between M+ and the shell cannot be tested.
[0003] Therefore, how to provide a testing method that provides more comprehensive pre-firing leakage monitoring has become an urgent problem to be solved in the field. Summary of the invention
[0004] The present application proposes a method for testing rocket leakage, comprising the following steps: determining a test circuit for rocket leakage; testing the leakage conditions of a negative bus and a shell according to the test circuit; and testing the leakage conditions of a positive bus and a shell according to the test circuit.
[0005] The rocket leakage test method as described above, wherein the rocket leakage test circuit includes a positive bus, a first and second negative bus, switches K1 to K3, a resistor R1, and a resistor R2; the positive bus is connected to one end of the switch K1, the other end of the switch K1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the rocket shell; the first M-bus is connected to one end of the switch K2, the other end of the switch K2 is connected to one end of the resistor R1. The second M-bus is connected to the switch K3.
[0006] The rocket leakage test method as described above, wherein the test of the negative busbar and shell leakage comprises: the rocket remains unpowered, and switches K1 and K3 are turned on; if a first leakage group exists, resistor R2 collects the voltage to determine the value of the first leakage group.
[0007] In the rocket leakage test method as described above, the value R3 of the first leakage resistor is specifically expressed as: Where U represents the voltage on the resistor R2 obtained by the test, U 母线 represents the bus voltage of M1, R2 represents the voltage value collected by the sampling resistor R2, and R1 represents the voltage value collected by the resistor R1.
[0008] The rocket leakage test method as described above, wherein the positive busbar and shell leakage test comprises: keeping the rocket powered on, turning on switch K2; if there is a second leakage group, collecting the voltage with resistor R2, and determining the value of the second leakage group.
[0009] A rocket leakage test system specifically includes: a test circuit confirmation unit, a negative bus test unit and a positive bus test unit; the test circuit confirmation unit is used to determine the rocket leakage test circuit; the negative bus test unit is used to test the negative bus and shell leakage conditions according to the test circuit; the positive bus test unit is used to test the positive bus and shell leakage conditions according to the test circuit.
[0010] The rocket leakage test system as described above, wherein the rocket leakage test circuit confirmed by the test circuit includes a positive bus, a first and a second negative bus, switches K1 to K3, a resistor R1 and a resistor R2; the positive bus is connected to one end of the switch K1, the other end of the switch K1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the rocket shell; the first M-bus is connected to one end of the switch K2, the other end of the switch K2 is connected to one end of the resistor R1; the second M-bus is connected to the switch K3.
[0011] The rocket leakage test system as described above, in which the negative bus test unit performs a test on the leakage of the negative bus and the shell, includes: keeping the rocket unpowered, turning on switches K1 and K3; if there is a first leakage group, resistor R2 collects the voltage to determine the value of the first leakage group.
[0012] In the rocket leakage test system as described above, the value R3 of the first leakage resistance determined by the negative bus test sheet is specifically expressed as: Where U represents the voltage on the resistor R2 obtained by the test, U 母线 represents the bus voltage of M1, R2 represents the voltage value collected by the sampling resistor R2, and R1 represents the voltage value collected by the resistor R1.
[0013] The rocket leakage test system as described above, in which the positive bus test unit performs a test on the leakage of the positive bus and the shell, includes: keeping the rocket powered on and turning on switch K2; if there is a second leakage group, resistor R2 collects the voltage to determine the value of the second leakage group.
[0014] This application has the following beneficial effects:
[0015] The rocket leakage test method proposed in this application can realize the M+ busbar to shell and M- busbar to shell leakage test, providing more comprehensive pre-launch leakage monitoring. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0017] Figure 1 It is a flow chart of a method for testing rocket leakage according to an embodiment of the present application;
[0018] Figure 2 It is a specific structural diagram of a rocket leakage test circuit provided in accordance with an embodiment of the present application;
[0019] Figure 3 It is a specific structural diagram of another rocket leakage test circuit provided according to an embodiment of the present application;
[0020] Figure 4 It is a schematic diagram of the internal structure of a rocket leakage test system provided according to an embodiment of the present application. DETAILED DESCRIPTION
[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0022] The present application proposes a rocket leakage test method and system, which can realize M+ busbar-to-shell and M- busbar-to-shell leakage tests, and provide more comprehensive pre-launch leakage monitoring.
[0023] Embodiment 1
[0024] like Figure 1 As shown, the test method for rocket leakage includes the following steps:
[0025] Step S110: Determine the test circuit for rocket leakage.
[0026] Among them Figure 2The figure shows the specific structure of the rocket leakage test circuit, wherein the M+ busbar is connected to one end of the switch K1, the other end of the switch K1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the rocket shell.
[0027] The first M- bus (first negative bus) is connected to one end of the switch K2, and the other end of the switch K2 is connected to one end of the resistor R1.
[0028] The second M- bus (second negative bus) is connected to the switch K3.
[0029] The resistors R1 and R2 are sampling resistors, and the resistors R3 and R4 in the figure are used to detect the presence of leakage.
[0030] If there is a leakage resistor R3, one end of R3 is connected to the switch K3, and the other end is connected to the rocket shell.
[0031] If there is a leakage resistor R4, one end of R4 is connected to the rocket shell, and the other end is connected to the M+ bus.
[0032] It is worth noting that if there are multiple busbars on the rocket, such as a pyrotechnic negative busbar and an instrument negative busbar, the leakage condition of each busbar can be tested in turn by adding a switching switch.
[0033] The first and second negative busbars are connected to the negative busbars of different batteries on the rocket body.
[0034] like Figure 3 The figure shows the structure of the test circuit for multi-channel buses. Figure 2 Switches K4 and K5 are added on the basis of .
[0035] Step S120: testing the negative busbar and shell leakage according to the test circuit.
[0036] When testing the leakage between the M-bus and the shell, the rocket remains unpowered and K1 and K3 are connected. At this time, if there is a leakage resistor R3 between the rocket shell and the second M-bus, a loop can be formed between the positive and negative buses (M+ bus and the second M-bus), and the sampling resistor R2 can collect the voltage, and the value of the leakage resistor R3 can be obtained by calculation.
[0037] The value of the leakage resistance R3 is specifically expressed as:
[0038]
[0039] Where U represents the voltage on the resistor R2 obtained by the test, U 母线 represents the bus voltage of M1, R2 represents the voltage value collected by the sampling resistor R2, and R1 represents the voltage value collected by the resistor R1.
[0040] Step S130: testing the positive busbar and shell leakage conditions according to the test circuit.
[0041] When testing the leakage between the M+ busbar and the shell, the rocket remains powered on and K2 is connected. At this time, if there is a leakage resistor R4 between the rocket shell and the positive busbar, a loop can be formed between the positive and negative busbars (M+ busbar and the first M- busbar), and the sampling resistor R2 can collect the voltage, and the value of the leakage resistor R4 can be obtained by calculation.
[0042] The value of the leakage resistance R4 is specifically expressed as:
[0043]
[0044] Where U represents the voltage on the resistor R2 obtained by the test, U 母线 represents the bus voltage of M1, R2 represents the voltage value collected by the sampling resistor R2, and R1 represents the voltage value collected by the resistor R1.
[0045] Embodiment 2
[0046] like Figure 4 As shown, this embodiment provides a rocket leakage test system, which specifically includes: a test circuit confirmation unit 410, a negative bus test unit 420, and a positive bus test unit 430.
[0047] The test circuit confirmation unit 410 is used to determine the test circuit of the rocket leakage.
[0048] Among them Figure 2 As shown, it is a specific structure diagram of the rocket leakage test circuit. The M+ busbar is connected to one end of the switch K1, the other end of the switch K1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the rocket shell. The first M- busbar is connected to one end of the switch K2, and the other end of the switch K2 is connected to one end of the resistor R1. The second M- busbar is connected to the switch K3.
[0049] The resistors R1 and R2 are sampling resistors, and the resistors R3 and R4 in the figure are used to detect the presence of leakage.
[0050] If there is a leakage resistor R3, one end of R3 is connected to the switch K3, and the other end is connected to the rocket shell. If there is a leakage resistor R4, one end of R4 is connected to the rocket shell, and the other end is connected to the M+ busbar.
[0051] It is worth noting that if there are multiple busbars on the rocket, such as a pyrotechnic negative busbar and an instrument negative busbar, the leakage condition of each busbar can be tested in turn by adding a switching switch.
[0052] like Figure 3The figure shows the structure of the test circuit for multi-channel buses. Figure 2 Switches K4 and K5 are added on the basis of .
[0053] The negative busbar test unit 420 is used to test the leakage condition of the negative busbar and the shell according to the test circuit.
[0054] When testing the leakage between the M-bus and the shell, the rocket remains unpowered and K1 and K3 are connected. At this time, if there is a leakage resistor R3 between the rocket shell and the second M-bus, a loop can be formed between the positive and negative buses (M+ bus and the second M-bus), and the sampling resistor R2 can collect the voltage, and the value of the leakage resistor R3 can be obtained by calculation.
[0055] The value of the leakage resistance R3 is specifically expressed as:
[0056]
[0057] The positive busbar test unit 430 is used to test the leakage condition of the positive busbar and the shell according to the test circuit.
[0058] When testing the leakage between the M+ busbar and the shell, the rocket remains powered on and K2 is connected. At this time, if there is a leakage resistor R4 between the rocket shell and the positive busbar, a loop can be formed between the positive and negative busbars (M+ busbar and the first M- busbar), and the sampling resistor R2 can collect the voltage, and the value of the leakage resistor R4 can be obtained by calculation.
[0059] The value of the leakage resistance R4 is specifically expressed as:
[0060]
[0061] This application has the following beneficial effects:
[0062] The rocket leakage test method proposed in this application can realize the M+ busbar to shell and M- busbar to shell leakage test, providing more comprehensive pre-launch leakage monitoring.
[0063] Although the present application is described with reference to examples, this is for illustrative purposes only and is not intended to limit the present application, and changes, additions and / or deletions to the embodiments may be made without departing from the scope of the present application.
[0064] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A method for testing rocket leakage, characterized in that: The following steps are involved: a test circuit to determine rocket leakage; Conduct leakage test on negative busbar and shell according to the test circuit; Test the positive busbar and shell leakage according to the test circuit.
2. The rocket leakage testing method as claimed in claim 1, characterized in that: The rocket leakage test circuit includes a positive bus, the first and second negative buses, switches K1 to K3, resistor R1 and resistor R2; The positive bus is connected to one end of the switch K1, the other end of the switch K1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the rocket shell; The first M-busbar is connected to one end of the switch K2, and the other end of the switch K2 is connected to one end of the resistor R1; the second M-busbar is connected to the switch K3.
3. The rocket leakage testing method as claimed in claim 2, characterized in that: The negative busbar and shell leakage test includes: The arrow remains unpowered and switches K1 and K3 are turned on; If the first leakage group exists, the resistor R2 collects the voltage to determine the value of the first leakage group.
4. The rocket leakage testing method as claimed in claim 3, characterized in that: The value of the first leakage resistor R3 is specifically expressed as: Where U represents the voltage on the resistor R2 obtained by the test, U 母线 represents the bus voltage of M1, R2 represents the voltage value collected by the sampling resistor R2, and R1 represents the voltage value collected by the resistor R1.
5. The rocket leakage testing method as claimed in claim 1, characterized in that: The tests for positive busbar and shell leakage include: The arrow remains powered on and switch K2 is turned on; If a second leakage group exists, resistor R2 collects the voltage to determine the value of the second leakage group.
6. A rocket leakage test system, characterized in that: Specifically include: Test circuit confirmation unit, negative bus test unit and positive bus test unit; A test circuit confirmation unit, used to determine the rocket's leakage test circuit; Negative busbar test unit, used to test the negative busbar and shell leakage according to the test circuit; The positive busbar test unit is used to test the leakage condition of the positive busbar and the shell according to the test circuit.
7. The rocket leakage test system as claimed in claim 6, characterized in that: The test circuit confirms that the rocket leakage test circuit includes the positive bus, the first and second negative bus, switches K1 to K3, resistor R1 and resistor R2; The positive bus is connected to one end of the switch K1, the other end of the switch K1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the rocket shell; The first M-busbar is connected to one end of the switch K2, and the other end of the switch K2 is connected to one end of the resistor R1; the second M-busbar is connected to the switch K3.
8. The rocket leakage test system as claimed in claim 6, characterized in that: The negative busbar test unit conducts the following tests on the leakage between the negative busbar and the shell: The arrow remains unpowered and switches K1 and K3 are turned on; If the first leakage group exists, the resistor R2 collects the voltage to determine the value of the first leakage group.
9. The rocket leakage test system as claimed in claim 8, characterized in that: The value R3 of the first leakage resistance determined by the negative bus test sheet is specifically expressed as: Where U represents the voltage on the resistor R2 obtained by the test, U 母线 represents the bus voltage of M1, R2 represents the voltage value collected by the sampling resistor R2, and R1 represents the voltage value collected by the resistor R1.
10. The rocket leakage test system as claimed in claim 6, characterized in that: The positive busbar test unit conducts the following tests on the leakage between the positive busbar and the shell: The arrow remains powered on and switch K2 is turned on; If a second leakage group exists, resistor R2 collects the voltage to determine the value of the second leakage group.