Rocket tank bursting test control system and control method

Abstract

The invention provides a rocket tank bursting test control system and control method. The control system comprises a water injection and supplement control device, an oxygen tank pressurization control device and a combustion tank pressurization control device. The rocket stainless steel storage tank is of a common-bottom structure, and an oxygen tank on the upper portion of the storage tank is used for being filled with liquid oxygen propellants. The combustion box at the lower part of the storage box is used for filling a liquid methane propellant; the oxygen box and the combustion box are both connected with the water supply storage box; the water injection and supplement control device is used for controlling the water supply centrifugal pump to inject water into the water supply storage tank, the oxygen tank and the combustion tank; the oxygen tank pressurization control device is used for controlling the oxygen tank pressurization constant-pressure pump to inject water into the oxygen tank and pressurize the oxygen tank step by step after taking water from the water supply storage tank; the combustion box pressurization control device is used for controlling the combustion box pressurization constant-pressure pump to take water from the water supply storage box and then conduct water injection step-by-step pressurization on the combustion box. Therefore, the pressurized internal pressure bursting test of the stainless steel storage tank of the rocket is completed. According to the invention, on-line automatic control can be carried out on the bursting test, and the test working efficiency and the test control accuracy can be improved.

Description

Technical Field

[0001] The invention belongs to the field of aerospace technology, and in particular relates to a rocket tank explosion test control system and a control method. Background Art

[0002] In the current aerospace field, rocket tanks are mostly made of traditional aluminum alloy materials. This type of material and its processing cost are high, which leads to an increase in the overall manufacturing cost of rocket tanks. In order to solve this problem, a feasible solution is to replace the tank material of liquid oxygen and methane rockets with stainless steel, which can greatly reduce the manufacturing cost of rocket tanks.

[0003] The rocket tank is made of stainless steel, and its design, material selection and manufacturing process are fundamentally different from traditional aluminum alloy tanks. In order to ensure that the modified stainless steel tank can withstand the expected internal pressure load, especially to verify the stability and overall strength of its welded structure, it is necessary to conduct an internal pressure test on the rocket tank. The internal pressure test on the rocket tank is aimed at evaluating the structural strength of the stainless steel tank under full pressure at room temperature, and determining the maximum safe pressure limit of the oxygen tank in the stainless steel tank under the same conditions. Summary of the invention

[0004] In order to overcome the problems existing in the related art at least to a certain extent, the present invention provides a rocket tank explosion test control system and control method.

[0005] According to a first aspect of an embodiment of the present invention, the present invention provides a rocket tank explosion test control system for online control of a rocket stainless steel tank pressurized internal pressure explosion test, which includes a water injection and replenishment control device, an oxygen tank pressurization control device, and a fuel tank pressurization control device;

[0006] The rocket stainless steel tank adopts a common bottom structure tank, the upper part of the tank is an oxygen tank, the oxygen tank is used to fill liquid oxygen propellant; the lower part of the tank is a fuel tank, the fuel tank is used to fill liquid methane propellant; the oxygen tank and the fuel tank are both connected to a water supply tank; the water supply tank is used to provide a water source for liquid pressurization for the oxygen tank and the fuel tank;

[0007] The water injection and replenishment control device is used to control the water supply centrifugal pump to fill the water supply tank, oxygen tank and fuel tank with water; the oxygen tank boost control device is used to control the oxygen tank boost constant pressure pump to take water from the water supply tank and then inject water into the oxygen tank and boost the pressure step by step; the fuel tank boost control device is used to control the fuel tank boost constant pressure pump to take water from the water supply tank and then inject water into the fuel tank and boost the pressure step by step; so as to complete the pressurized internal pressure explosion test of the rocket stainless steel tank.

[0008] According to the rocket tank explosion test control system provided by the present invention, the water supply tank is connected to the fire protection pipe through a water supply pipe, and the fire protection pipe is connected to a fire water pool, wherein the fire protection water pool is used to provide water source for the water supply tank as well as the oxygen tank and the fuel tank; the oxygen tank is connected to the fire protection pipe through an oxygen tank water injection pipe, and the fuel tank is connected to the fire protection pipe through a fuel tank water injection pipe.

[0009] Furthermore, the water supply centrifugal pump is arranged on the fire-fighting pipeline, and a water supply centrifugal pump inlet valve is also arranged on the fire-fighting pipeline, and the water supply centrifugal pump inlet valve is used to open and close the fire-fighting pipeline; a water supply tank water replenishment valve is arranged on the water supply pipeline, and the water supply tank water replenishment valve is used to open and close the water supply pipeline;

[0010] The oxygen box water injection pipeline is provided with an oxygen box water injection valve, and the oxygen box water injection valve is used to open and close the oxygen box water injection pipeline; the fuel box water injection pipeline is provided with a fuel box water injection valve, and the fuel box water injection valve is used to open and close the fuel box water injection pipeline;

[0011] The water supply centrifugal pump, the water supply centrifugal pump liquid inlet valve, the water supply tank water replenishment valve, the oxygen tank water injection valve and the fuel tank water injection valve are all connected to the water injection and replenishment control device.

[0012] Further, the water supply tank is connected to the oxygen tank in sequence through the oxygen tank boosting constant pressure pump liquid inlet pipeline, the oxygen tank boosting constant pressure pump and the oxygen tank boosting constant pressure pump liquid outlet pipeline; the water supply tank is connected to the fuel tank in sequence through the fuel tank boosting constant pressure pump liquid inlet pipeline, the fuel tank boosting constant pressure pump and the fuel tank boosting constant pressure pump liquid outlet pipeline;

[0013] The oxygen tank boost constant pressure pump is connected to the oxygen tank boost control device, and the fuel tank boost constant pressure pump is connected to the fuel tank boost control device.

[0014] Furthermore, a water supply oxygen tank liquid delivery valve is arranged on the liquid inlet pipeline of the oxygen tank booster constant pressure pump, an oxygen tank liquid inlet valve is arranged on the liquid outlet pipeline of the oxygen tank booster constant pressure pump, the water supply oxygen tank liquid delivery valve is arranged near the first liquid outlet of the water supply storage tank, and the oxygen tank liquid inlet valve is arranged near the liquid inlet of the oxygen tank;

[0015] A water supply fuel tank liquid delivery valve is provided on the liquid inlet pipeline of the fuel tank booster constant pressure pump, a fuel tank liquid inlet valve is provided on the liquid outlet pipeline of the fuel tank booster constant pressure pump, the water supply fuel tank liquid delivery valve is provided near the second liquid outlet of the water supply storage tank, and the fuel tank liquid inlet valve is provided near the liquid inlet of the fuel tank;

[0016] The water supply oxygen tank liquid delivery valve and the oxygen tank liquid inlet valve are both connected to the oxygen tank boost control device, and the water supply fuel tank liquid delivery valve and the fuel tank liquid inlet valve are both connected to the fuel tank boost control device.

[0017] According to the rocket tank blasting test control system provided by the present invention, the water supply tank is connected to a water supply tank level gauge, and the water supply tank level gauge is connected to a water injection and replenishment control device for remotely monitoring the liquid level in the water supply tank;

[0018] The oxygen tank is connected to an oxygen tank level gauge, and the oxygen tank level gauge is connected to a water injection and replenishment control device for remotely monitoring the liquid level in the oxygen tank;

[0019] The fuel tank is connected to a fuel tank liquid level gauge, and the fuel tank liquid level gauge is connected to a water injection and replenishment control device for remotely monitoring the liquid level in the fuel tank.

[0020] According to the rocket tank explosion test control system provided by the present invention, a water supply tank exhaust pipe is arranged on the top of the water supply tank, and a water supply tank exhaust valve is arranged on the water supply tank exhaust pipe. The water supply tank exhaust valve is connected to the water injection and replenishment control device, and is used for opening and closing the water supply tank exhaust pipe.

[0021] According to the rocket tank explosion test control system provided by the present invention, an oxygen tank overflow exhaust and liquid discharge pipeline is arranged on the top of the oxygen tank, an oxygen tank overflow exhaust and liquid discharge valve is arranged on the oxygen tank overflow exhaust and liquid discharge pipeline, and the oxygen tank overflow exhaust and liquid discharge valve is connected to the water injection and replenishment control device, and is used to open and close the oxygen tank overflow exhaust and liquid discharge pipeline;

[0022] The oxygen box overflow exhaust and liquid discharge pipeline is connected to an oxygen box pressure sensor, and the oxygen box pressure sensor is connected to an oxygen box pressurization control device for remotely monitoring the pressure value in the oxygen box;

[0023] A fuel tank overflow exhaust and liquid drainage pipeline is provided on the top of the fuel tank, a fuel tank overflow exhaust and liquid drainage valve is provided on the fuel tank overflow exhaust and liquid drainage pipeline, and the fuel tank overflow exhaust and liquid drainage valve is connected to the water injection and replenishment control device for opening and closing the fuel tank overflow exhaust and liquid drainage pipeline;

[0024] The fuel tank overflow exhaust and liquid discharge pipeline is connected with a fuel tank pressure sensor, and the fuel tank pressure sensor is connected with a fuel tank boost control device for remotely monitoring the pressure value in the fuel tank.

[0025] According to the rocket tank explosion test control system provided by the present invention, the bottom of the oxygen tank is connected to an oxygen tank bottom drainage pipe, and an oxygen tank bottom drainage valve is arranged on the oxygen tank bottom drainage pipe. The oxygen tank bottom drainage valve is connected to the oxygen tank boost control device and is used to open and close the oxygen tank bottom drainage pipe;

[0026] The bottom of the fuel tank is connected with a fuel tank bottom drainage pipe, and a fuel tank bottom drainage valve is arranged on the fuel tank bottom drainage pipe. The fuel tank bottom drainage valve is connected with a fuel tank boost control device and is used for opening and closing the fuel tank bottom drainage pipe.

[0027] According to a second aspect of an embodiment of the present invention, the present invention further provides a rocket tank explosion test control method, which comprises the following steps:

[0028] Water supply and replenishment stage before the test:

[0029] The water injection and replenishment control device controls the opening of the fire-fighting pipeline, the water supply pipeline and the oxygen tank water injection pipeline to facilitate the filling of water into the water supply tank and the oxygen tank; when the oxygen tank is filled with water, the fuel tank water injection pipeline is controlled to open to facilitate the filling of water into the fuel tank;

[0030] The first stage of the internal pressure burst test of the Arrow stainless steel tank:

[0031] The fuel tank is pressurized to the first pressure value Ps1 before the rear bottom equatorial plane of the tank becomes unstable, and the changes in the material, process and structural performance of the first stage test tank at the first pressure value before the rear bottom equatorial plane becomes unstable are determined;

[0032] The second stage of the rocket stainless steel tank internal pressure explosion test:

[0033] The fuel tank is pressurized to a second pressure value Ps2 after the equatorial plane of the rear bottom of the tank becomes unstable and before it is destroyed, and the changes in the material, process and structural performance of the second stage test tank at the second pressure value after the equatorial plane of the rear bottom becomes unstable and before it is destroyed are determined;

[0034] The third stage of the rocket stainless steel tank internal pressure explosion test:

[0035] The process of blasting test on rocket stainless steel tank is as follows:

[0036] When the oxygen box is pressurized step by step until it explodes, the pressurization is stopped, or when the oxygen box is pressurized to the preset maximum pressure value Po of the oxygen box and the oxygen box does not explode, the pressurization is stopped; when the fuel box is pressurized step by step to the preset maximum pressure value Pr of the fuel box, the pressurization is stopped; wherein the maximum pressure value Pr of the fuel box is the pressure to prevent the back pressure shock when the oxygen box explodes; determine the changes in the material, process structure and performance of the storage tank after the third stage test of the oxygen box explosion or at the maximum pressure value;

[0037] The water injection and replenishment control device controls the closing of the exhaust passage of the water supply tank, and discharges the water in the fire-fighting pipeline, the oxygen tank booster constant pressure pump liquid inlet pipeline and the fuel tank booster constant pressure pump liquid inlet pipeline.

[0038] According to the above specific embodiments of the present invention, it can be known that at least the following beneficial effects are achieved: the rocket tank blasting test control system provided by the present invention provides a water injection and replenishment control device and uses the water injection and replenishment control device to interlock the water supply centrifugal pump inlet valve, water supply tank replenishment valve, oxygen tank water injection valve, fuel tank water injection valve, water supply tank exhaust valve, oxygen tank overflow exhaust and drain valve, fuel tank overflow exhaust and drain valve, water supply centrifugal pump, water supply tank level gauge, oxygen tank level gauge and fuel tank level gauge; and provides an oxygen tank boost control device and uses the oxygen tank boost control device to control the water supply centrifugal pump inlet valve, water supply tank replenishment valve, oxygen tank water injection valve, fuel tank water injection valve, water supply tank exhaust valve, oxygen tank overflow exhaust and drain valve, fuel tank overflow exhaust and drain valve, water supply centrifugal pump, water supply tank level gauge, oxygen tank level gauge and fuel tank level gauge; The oxygen tank liquid supply valve, oxygen tank liquid inlet valve, oxygen tank overflow exhaust and liquid drain valve, oxygen tank bottom drain valve, oxygen tank boost constant pressure pump and oxygen tank pressure sensor are interlockedly controlled. By setting a fuel tank boost control device and utilizing the fuel tank boost control device to interlockly control the water supply fuel tank liquid supply valve, fuel tank liquid inlet valve, fuel tank overflow exhaust and liquid drain valve, fuel tank bottom drain valve, fuel tank boost constant pressure pump and fuel tank pressure sensor, the rocket stainless steel tank boost internal pressure burst test can be automatically controlled online. Compared with manual operation, this can improve the test work efficiency and the accuracy of test control.

[0039] The rocket tank explosion test control system provided by the present invention uses liquid to pressurize the rocket stainless steel tank, which can reduce the gas volume in the tank, reduce the risk of damage during the tank explosion test, and improve safety. In a short test period, compared with deionized water, using fire water as the pressurization medium has lower investment costs.

[0040] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings below are part of the specification of the present invention, and illustrate embodiments of the present invention. The accompanying drawings together with the description of the specification are used to explain the principle of the present invention.

[0042] Figure 1 A schematic structural diagram of a rocket tank explosion test control system provided in one embodiment of the present invention.

[0043] Description of reference numerals:

[0044] K0: water injection and replenishment control device; K1: oxygen tank pressurization control device; K2: fuel tank pressurization control device;

[0045] O: oxygen tank; R: fuel tank; H: water supply tank; X: fire water tank;

[0046] E0: water supply centrifugal pump; E1: oxygen tank booster constant pressure pump; E2: fuel tank booster constant pressure pump;

[0047] A0: water supply centrifugal pump inlet valve; A1: water supply tank water replenishment valve; A2: oxygen tank water injection valve; A3: fuel tank water injection valve;

[0048] B0: water supply tank exhaust valve; B1: water supply oxygen tank liquid delivery valve; B2: oxygen tank liquid inlet valve; B3: oxygen tank overflow exhaust and liquid drain valve; B4: oxygen tank bottom drain valve;

[0049] C1: water supply fuel tank liquid delivery valve; C2: fuel tank liquid inlet valve; C3: fuel tank overflow exhaust valve; C4: fuel tank bottom drain valve;

[0050] a0: Fire fighting pipeline; a1: Water supply pipeline; a2: Oxygen tank water injection pipeline; a3: Fuel tank water injection pipeline; a4: Water supply tank exhaust pipeline;

[0051] b1: oxygen box booster constant pressure pump inlet pipe; b2: oxygen box booster constant pressure pump outlet pipe; b3: oxygen box overflow exhaust and liquid discharge pipe; b4: oxygen box bottom liquid discharge pipe;

[0052] c1: fuel tank booster constant pressure pump inlet pipe; c2: fuel tank booster constant pressure pump outlet pipe; c3: fuel tank overflow exhaust pipe; c4: fuel tank bottom drain pipe;

[0053] G: pre-pump filter; F1: first row clean valve; F2: second row clean valve; F3: third row clean valve;

[0054] L1: water tank level gauge; L2: oxygen tank level gauge; L3: fuel tank level gauge;

[0055] P1: oxygen tank pressure sensor; P2: fuel tank pressure sensor. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clearly understood, the spirit of the contents disclosed in the present invention will be clearly explained with the accompanying drawings and detailed descriptions below. After understanding the embodiments of the contents of the present invention, any technician in the relevant technical field can change and modify the techniques taught by the contents of the present invention without departing from the spirit and scope of the contents of the present invention.

[0057] The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention. In addition, elements / components with the same or similar reference numerals used in the drawings and embodiments are used to represent the same or similar parts.

[0058] The terms “first”, “second”, etc. used in this document do not particularly refer to an order or sequence, nor are they used to limit the present invention. They are only used to distinguish elements or operations described with the same technical terms.

[0059] The directional terms used in this document, such as up, down, left, right, front or back, etc., are only used to refer to the directions of the drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.

[0060] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0061] As used herein, "and / or" includes any or all combinations of the items described.

[0062] As used herein, “plurality” includes “two” and “more than two”; as used herein, “plurality groups” includes “two groups” and “more than two groups”.

[0063] The terms "substantially" and "approximately" used herein are used to modify any quantity or error that may vary slightly, but these slight changes or errors do not change their essence. Generally speaking, the range of slight changes or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. Those skilled in the art should understand that the aforementioned values ​​can be adjusted according to actual needs and are not limited thereto.

[0064] Certain terms that are used to describe the invention are discussed below or elsewhere in the specification to provide additional guidance to those skilled in the art regarding the description of the invention.

[0065] In the prior art, the usual test process for conducting an internal pressure test on a rocket tank is as follows:

[0066] First, fill the rocket's stainless steel tank with water, and then use nitrogen to conduct a pressurization test on the tank.

[0067] It is worth noting that the unique ductility range of stainless steel (approximately 10% to 25%) means that the stainless steel tank will expand to a certain extent during the gas filling and pressure increase process. When the pressure continues to increase to the bursting limit of the tank material, a violent explosion may occur, accompanied by a strong shock wave, which will undoubtedly pose a certain safety risk to the infrastructure and personnel safety of the test site.

[0068] In view of the risks involved in gas pressurization tests on rocket tanks, the present invention adopts a control system and a control method for performing internal pressure boosting explosion tests on rocket tanks by replacing liquid with gas, which can better avoid the risk of explosion shock caused by the explosion of the tank.

[0069] like Figure 1As shown, the rocket tank explosion test control system provided by the present invention is used for online control of the rocket stainless steel tank pressurization internal pressure explosion test, which includes a water injection and replenishment control device K0, an oxygen tank pressurization control device K1 and a fuel tank pressurization control device K2.

[0070] The rocket stainless steel tank adopts a common bottom structure tank. The upper part of the tank is the oxygen tank O, which is used to fill liquid oxygen propellant; the lower part of the tank is the fuel tank R, which is used to fill liquid methane propellant. The water injection and replenishment control device K0 is used to control the water supply centrifugal pump E0 to fill the water supply tank H for pressurization and the oxygen tank O and fuel tank R in the rocket stainless steel tank. The water supply tank H is used to provide a water source for liquid pressurization for the oxygen tank O and the fuel tank R; after the water supply tank H is filled with water, the water supply centrifugal pump E0 is controlled to stop working. The oxygen tank boost control device K1 is used to control the oxygen tank boost constant pressure pump E1 to take water from the water supply tank H and then inject water into the oxygen tank O to boost the pressure step by step. The fuel tank boost control device K2 is used to control the fuel tank boost constant pressure pump E2 to take water from the water supply tank H and then inject water into the fuel tank R to boost the pressure step by step.

[0071] According to the test requirements, the first stage fuel tank R pressurization, the second stage fuel tank R pressurization and the third stage blasting test are completed in sequence. During the process of injecting water and gradually pressurizing the oxygen tank O and the fuel tank R, the water injection and replenishment control device K0 can automatically inject water into the water supply tank H according to the liquid level value in the water supply tank H.

[0072] The rocket tank blasting test control system provided by the present invention can realize online automatic control of the test, and can improve the work efficiency of the test and the accuracy of the test control compared with manual operation. The use of liquid to pressurize the rocket stainless steel tank can reduce the gas volume in the tank and reduce the risk of damage during the tank blasting test.

[0073] In a specific embodiment, the water supply tank H is connected to the fire fighting pipe a0 through the water supply pipe a1, and the fire fighting pipe a0 is connected to a fire fighting pool X. The fire fighting pool X adopts a fire fighting pool for a liquid oxygen / methane liquid rocket engine test bench, which is used to provide water for the water supply tank H and the rocket stainless steel tank. The oxygen tank O in the rocket stainless steel tank is connected to the fire fighting pipe a0 through the oxygen tank water injection pipe a2, and the fuel tank R in the rocket stainless steel tank is connected to the fire fighting pipe a0 through the fuel tank water injection pipe a3.

[0074] In the above embodiment, the water supply centrifugal pump E0 is arranged on the fire-fighting pipe a0. The water supply centrifugal pump E0 adopts a horizontal variable frequency centrifugal pump, which is used to inject water into the water supply tank H and the oxygen tank O and fuel tank R of the rocket stainless steel tank through the fire-fighting water tank X.

[0075] The water supply tank H is connected to the oxygen tank O through the oxygen tank booster constant pressure pump inlet pipe b1, the oxygen tank booster constant pressure pump E1 and the oxygen tank booster constant pressure pump outlet pipe b2 in sequence. Among them, the oxygen tank booster constant pressure pump E1 adopts a constant pressure variable frequency vertical centrifugal pump with a constant pressure stabilizing gas cylinder, which is used to inject water into the oxygen tank O and boost the pressure.

[0076] The oxygen tank booster constant pressure pump E1 comes with a constant pressure stabilizing gas cylinder to ensure the stability of the tank pressure during the test boost and pressure relief process. Compared with the traditional non-constant pressure centrifugal pump that requires a separate booster constant pressure integrated system, the process system of the present invention is more concise and optimized.

[0077] The water supply tank H is connected to the fuel tank R through the fuel tank boosting constant pressure pump inlet pipe c1, the fuel tank boosting constant pressure pump E2 and the fuel tank boosting constant pressure pump outlet pipe c2 in sequence. Among them, the fuel tank boosting constant pressure pump E2 adopts a constant pressure variable frequency vertical centrifugal pump with a constant pressure stabilizing gas cylinder, which is used to inject water and pressurize the fuel tank R.

[0078] The fuel tank booster constant pressure pump E2 comes with a constant pressure stabilizing gas cylinder to ensure the stability of the tank pressure during the test booster and pressure relief process. Compared with the traditional non-constant pressure centrifugal pump that requires a separate booster constant pressure integrated system, the process system of the present invention is more concise and optimized.

[0079] In the above embodiment, the water supply centrifugal pump E0 is arranged on the fire-fighting pipe a0, and the water supply centrifugal pump inlet valve A0 is also arranged on the fire-fighting pipe a0, and the water supply centrifugal pump inlet valve A0 is used to open and close the fire-fighting pipe a0, and the water supply centrifugal pump E0 is used to pump out water from the fire-fighting water tank X through the fire-fighting pipe a0. The water supply pipe a1 is provided with a water supply tank replenishment valve A1, and the water supply tank replenishment valve A1 is used to open and close the water supply pipe a1. The water supply centrifugal pump inlet valve A0 and the water supply tank replenishment valve A1 both adopt switch-controlled pneumatic stop valves.

[0080] The oxygen tank water injection pipeline a2 is provided with an oxygen tank water injection valve A2, which is used to open and close the oxygen tank water injection pipeline a2. The fuel tank water injection pipeline a3 is provided with a fuel tank water injection valve A3, which is used to open and close the fuel tank water injection pipeline a3. Both the oxygen tank water injection valve A2 and the fuel tank water injection valve A3 adopt switch-controlled pneumatic stop valves.

[0081] In the above embodiment, a pre-pump filter G is also provided on the fire-fighting pipe a0, and the pre-pump filter G is used to filter impurities in the fire-fighting water extracted by the water supply centrifugal pump E0 from the fire-fighting water tank X. A first drain valve F1 is provided on the fire-fighting pipe a0 on the side opposite to the side where the water supply centrifugal pump E0 is connected to the pre-pump filter G, and the first drain valve F1 is used to drain the water in the fire-fighting pipe a0.

[0082] In the above embodiment, a water supply oxygen tank liquid delivery valve B1 is provided on the liquid inlet pipe b1 of the oxygen tank booster constant pressure pump, and an oxygen tank liquid inlet valve B2 is provided on the liquid outlet pipe b2 of the oxygen tank booster constant pressure pump. The water supply oxygen tank liquid delivery valve B1 is provided near the first liquid outlet of the water supply storage tank H, and the oxygen tank liquid inlet valve B2 is provided near the liquid inlet of the oxygen tank O.

[0083] The water supply oxygen tank liquid delivery valve B1 and the oxygen tank liquid inlet valve B2 are both switch-controlled pneumatic stop valves. Located on both sides of the oxygen tank booster constant pressure pump E1, a second drain valve F2 is provided on the oxygen tank booster constant pressure pump liquid inlet pipe b1 and the oxygen tank booster constant pressure pump liquid outlet pipe b2. The second drain valve F2 is used to drain the water in the oxygen tank booster constant pressure pump liquid inlet pipe b1.

[0084] In the above embodiment, a water supply fuel tank liquid delivery valve C1 is provided on the liquid inlet pipe c1 of the fuel tank boosting constant pressure pump, and a fuel tank liquid inlet valve C2 is provided on the liquid outlet pipe c2 of the fuel tank boosting constant pressure pump. The water supply fuel tank liquid delivery valve C1 is provided near the second liquid outlet of the water supply tank H, and the fuel tank liquid inlet valve C2 is provided near the liquid inlet of the fuel tank R.

[0085] The water supply fuel tank liquid delivery valve C1 and the fuel tank liquid inlet valve C2 are both switch-controlled pneumatic stop valves. Located on both sides of the fuel tank booster constant pressure pump E2, a third drain valve F3 is provided on the fuel tank booster constant pressure pump liquid inlet pipe c1 and the fuel tank booster constant pressure pump liquid outlet pipe c2. The third drain valve F3 is used to drain the water in the fuel tank booster constant pressure pump liquid inlet pipe c1.

[0086] In the above embodiment, the water supply tank H is connected to a water supply tank level meter L1, which is connected to the water injection and replenishment control device K0 for remotely monitoring the liquid level in the water supply tank H.

[0087] The oxygen tank O is connected to an aerobic tank level gauge L2, and the oxygen tank level gauge L2 is connected to a water injection and replenishment control device K0, so as to monitor the liquid level in the oxygen tank O remotely.

[0088] The fuel tank R is connected to a fuel tank liquid level gauge L3, which is connected to a water injection and replenishment control device K0 for remotely monitoring the liquid level in the fuel tank R.

[0089] In the above embodiment, a water supply tank exhaust pipe a4 is provided on the top of the water supply tank H, and a water supply tank exhaust valve B0 is provided on the water supply tank exhaust pipe a4. The water supply tank exhaust valve B0 is connected to the water injection and replenishment control device K0 and is used to open and close the water supply tank exhaust pipe a4. The water supply tank exhaust valve B0 adopts a switch-controlled pneumatic stop valve.

[0090] An oxygen box overflow exhaust and drainage pipe b3 is provided at the top of the oxygen box O, and an oxygen box overflow exhaust and drainage valve B3 is provided on the oxygen box overflow exhaust and drainage pipe b3. The oxygen box overflow exhaust and drainage valve B3 is connected to the water injection and replenishment control device K0, and is used to open and close the oxygen box overflow exhaust and drainage pipe b3. The oxygen box overflow exhaust and drainage valve B3 adopts a switch-controlled pneumatic stop valve. The oxygen box overflow exhaust and drainage pipe b3 is connected to the oxygen box pressure sensor P1, and the oxygen box pressure sensor P1 is connected to the oxygen box pressurization control device K1, and is used to remotely monitor the pressure value in the oxygen box O.

[0091] A fuel tank overflow exhaust and liquid drainage pipeline c3 is provided at the top of the fuel tank R, and a fuel tank overflow exhaust and liquid drainage valve C3 is provided on the fuel tank overflow exhaust and liquid drainage pipeline c3. The fuel tank overflow exhaust and liquid drainage valve C3 is connected to the water injection and replenishment control device K0, and is used to open and close the fuel tank overflow exhaust and liquid drainage pipeline c3. The fuel tank overflow exhaust and liquid drainage valve C3 adopts a switch-controlled pneumatic stop valve. The fuel tank overflow exhaust and liquid drainage pipeline c3 is connected to a fuel tank pressure sensor P2, and the fuel tank pressure sensor P2 is connected to the fuel tank boost control device K2, and is used to remotely monitor the pressure value in the fuel tank R.

[0092] In the above embodiment, the bottom of the oxygen box O is connected to the oxygen box bottom drainage pipe b4, and the oxygen box bottom drainage pipe b4 is provided with an oxygen box bottom drainage valve B4, which is connected to the oxygen box boost control device K1 and is used to open and close the oxygen box bottom drainage pipe b4. The oxygen box bottom drainage valve B4 adopts a switch-controlled pneumatic stop valve.

[0093] The bottom of the fuel tank R is connected to a fuel tank bottom drain pipe c4, on which a fuel tank bottom drain valve C4 is provided, which is connected to the fuel tank boost control device K2 and is used to open and close the fuel tank bottom drain pipe c4. The fuel tank bottom drain valve C4 uses a switch-controlled pneumatic stop valve.

[0094] In the above embodiments, the water injection and replenishment control device K0 is connected to the water supply centrifugal pump inlet valve A0, the water supply tank replenishment valve A1, the oxygen tank water injection valve A2, the fuel tank water injection valve A3, the water supply tank exhaust valve B0, the oxygen tank overflow exhaust and drain valve B3, the fuel tank overflow exhaust and drain valve C3, the water supply centrifugal pump E0, the water supply tank liquid level gauge L1, the oxygen tank liquid level gauge L2, and the fuel tank liquid level gauge L3. The water supply tank liquid level gauge L1, the oxygen tank liquid level gauge L2 and The fuel tank liquid level meter L3 sends the detected liquid level information to the water injection and replenishment control device K0. The water injection and replenishment control device K0 controls the water supply centrifugal pump inlet valve A0, the water supply tank replenishment valve A1, the oxygen tank water injection valve A2 and the fuel tank water injection valve A3 to open or close according to the received liquid level information, and controls the water supply centrifugal pump E0 to start or stop the action, so as to control the water supply tank H, the oxygen tank O and the fuel tank R to perform water injection and replenishment or stop the water injection and replenishment operation. The water injection and replenishment control device K0 is also used to remotely control the water supply tank exhaust valve B0, the oxygen tank overflow exhaust and liquid discharge valve B3 and the fuel tank overflow exhaust and liquid discharge valve C3, so as to perform exhaust or liquid discharge operations on the water supply tank H, the oxygen tank O and the fuel tank R.

[0095] The oxygen tank boost control device K1 is connected to the water supply oxygen tank liquid delivery valve B1, the oxygen tank liquid inlet valve B2, the oxygen tank overflow exhaust and drain valve B3, the oxygen tank bottom drain valve B4, the oxygen tank boost constant pressure pump E1 and the oxygen tank pressure sensor P1, and performs remote interlocking control on the water supply oxygen tank liquid delivery valve B1, the oxygen tank liquid inlet valve B2, the oxygen tank overflow exhaust and drain valve B3, the oxygen tank bottom drain valve B4, the oxygen tank boost constant pressure pump E1 and the oxygen tank pressure sensor P1.

[0096] The fuel tank boost control device K2 is connected to the water supply fuel tank liquid delivery valve C1, the fuel tank liquid inlet valve C2, the fuel tank overflow exhaust drain valve C3, the fuel tank bottom drain valve C4, the fuel tank boost constant pressure pump E2 and the fuel tank pressure sensor P2, and performs remote interlocking control on the water supply fuel tank liquid delivery valve C1, the fuel tank liquid inlet valve C2, the fuel tank overflow exhaust drain valve C3, the fuel tank bottom drain valve C4, the fuel tank boost constant pressure pump E2 and the fuel tank pressure sensor P2.

[0097] Based on the rocket tank explosion test control system provided by the present invention, the present invention also provides a rocket tank explosion test control method, which includes the following steps:

[0098] S1. Water supply and replenishment stage before the test:

[0099] The water injection and replenishment control device K0 controls the opening of the fire-fighting pipe a0, the water supply pipe a1 and the oxygen tank water injection pipe a2 to inject water into the water supply tank H and the oxygen tank O; when the oxygen tank O is filled with water, the fuel tank water injection pipe a3 is controlled to be opened to inject water into the fuel tank R. By first filling the oxygen tank O with water and then injecting water into the fuel tank R, it is possible to prevent the problem that the common bottom tank may be damaged by the back pressure shock caused by the first injection of water into the fuel tank R.

[0100] Specifically, the water injection and replenishment control device K0 remotely controls the opening of the water supply tank exhaust valve B0, the oxygen tank overflow exhaust and drain valve B3 and the fuel tank overflow exhaust and drain valve C3, so that the water supply tank H, the oxygen tank O and the fuel tank R are connected to the atmosphere, and the gases in the water supply tank H, the oxygen tank O and the fuel tank R are discharged into the atmosphere through the water supply tank exhaust pipe a4, the oxygen tank overflow exhaust and drain pipe b3 and the fuel tank overflow exhaust and drain pipe c3.

[0101] The water injection and replenishment control device K0 controls the opening of the water supply centrifugal pump inlet valve A0, the water supply centrifugal pump E0, the water supply tank replenishment valve A1 and the oxygen tank filling valve A2, so that the fire water in the fire water pool X flows into the water supply tank H through the fire pipe a0 and the water supply pipe a1, and flows into the oxygen tank O through the fire pipe a0 and the oxygen tank filling pipe a2, so as to perform water injection operations on the water supply tank H and the oxygen tank O.

[0102] The water supply tank level meter L1 sends the detected liquid level value to the water injection and replenishment control device K0. When the water injection and replenishment control device K0 determines that the liquid level in the water supply tank H reaches the preset high liquid level value, the water injection and replenishment control device K0 controls the closure of the water supply tank replenishment valve A1 to stop injecting water into the water supply tank H.

[0103] The oxygen tank liquid level meter L2 sends the detected liquid level value to the water injection and replenishment control device K0. When the water injection and replenishment control device K0 determines that the liquid level in the oxygen tank O reaches the preset maximum liquid level value of the oxygen tank O (i.e., the tank is full), the water injection and replenishment control device K0 controls the closing of the oxygen tank water injection valve A2 to stop injecting water into the oxygen tank O.

[0104] The water injection and replenishment control device K0 controls the fuel tank water injection valve A3 to open, so that the fire water in the fire water pool X flows into the fuel tank R through the fire pipe a0 and the fuel tank water injection pipe a3, so as to perform water injection operation on the fuel tank R.

[0105] The fuel tank liquid level meter L3 sends the detected liquid level value to the water injection and replenishment control device K0. When the water injection and replenishment control device K0 determines that the liquid level in the fuel tank R reaches the preset maximum liquid level value of the fuel tank R (i.e., the tank is full), the water injection and replenishment control device K0 controls the closure of the fuel tank water injection valve A3 to stop injecting water into the fuel tank R.

[0106] S2. The first stage of the internal pressure explosion test of the rocket stainless steel tank:

[0107] The fuel tank R is pressurized to the first pressure value Ps1 before the rear bottom equatorial plane of the tank becomes unstable, and the changes in the material, process structure performance, etc. of the first stage test tank at the first pressure value before the rear bottom equatorial plane becomes unstable are determined.

[0108] Specifically, according to the test operation step requirements, the oxygen tank pressurization control device K1 and the fuel tank pressurization control device K2 are set with automatic control timing: with 0.1MPa as the first-level pressurization level, the fuel tank R is loaded step by step to the first pressure value Ps1; the oxygen tank O is loaded step by step to Ps1+0.1MPa. Subsequently, the oxygen tank O and the fuel tank R are depressurized step by step to 0MPa. When the level is reduced, the internal pressure of the fuel tank R is first reduced to the next level by 0.1MPa, and then the internal pressure of the oxygen tank O is reduced to the next level.

[0109] The first stage of pressurization test:

[0110] The oxygen box pressurization control device K1 controls the closing of the oxygen box overflow exhaust and liquid discharge valve B3, and then controls the opening of the water supply oxygen box liquid delivery valve B1, the oxygen box pressurization constant pressure pump E1 and the oxygen box liquid inlet valve B2. The water in the water supply tank H is transported to the oxygen box O through the oxygen box pressurization constant pressure pump liquid inlet pipe b1 to pressurize the liquid in the oxygen box O.

[0111] When the pressure value in the oxygen tank O detected by the oxygen tank pressure sensor P1 reaches 0.1MPa, the fuel tank pressurization control device K2 is started. The fuel tank pressurization control device K2 controls the fuel tank overflow exhaust and liquid discharge valve C3 to be closed, and then controls the water supply fuel tank liquid delivery valve C1, the fuel tank pressurization constant pressure pump E2 and the fuel tank liquid inlet valve C2 to be opened, and the water in the water supply tank H is delivered to the fuel tank R through the fuel tank pressurization constant pressure pump liquid inlet pipe c1 to pressurize the fuel tank R liquid.

[0112] When the pressure value in the fuel tank R detected by the fuel tank pressure sensor P2 reaches 0.1MPa, the oxygen tank pressure boost control device K1 is started again to increase the pressure value in the oxygen tank O by 0.2MPa; then the fuel tank pressure boost control device K2 is started to increase the pressure value in the fuel tank R by 0.2MPa. The oxygen tank O and the fuel tank R are pressurized alternately with 0.1MPa as the first-level pressure boosting level. When the pressure value in the oxygen tank O detected by the oxygen tank pressure sensor P1 is Ps1+0.1MPa, and the pressure value in the fuel tank R detected by the fuel tank pressure sensor P2 is Ps1MPa, the oxygen tank pressure boost control device K1 controls the closing of the water supply oxygen tank liquid delivery valve B1, the oxygen tank pressure boosting constant pressure pump E1, and the oxygen tank liquid inlet valve B2 in sequence, and the fuel tank pressure boost control device K2 controls the closing of the water supply fuel tank liquid delivery valve C1, the fuel tank pressure boosting constant pressure pump E2, and the fuel tank liquid inlet valve C2 in sequence to stop pressurizing the oxygen tank O and the fuel tank R.

[0113] Then the water supply tank H is depressurized:

[0114] The fuel tank pressure boost control device K2 controls the fuel tank bottom drain valve C4 to open and depressurize the fuel tank R. The water in the fuel tank R is discharged through the fuel tank bottom drain pipe c4. When the pressure value in the fuel tank R detected by the fuel tank pressure sensor P2 drops by 0.1 MPa, the fuel tank bottom drain valve C4 is controlled to close.

[0115] The oxygen tank pressure control device K1 controls the oxygen tank bottom drain valve B4 to open according to the pressure value in the fuel tank R detected by the fuel tank pressure sensor P2, and the water in the oxygen tank O is discharged through the oxygen tank bottom drain pipe b4. When the pressure value in the oxygen tank O detected by the oxygen tank pressure sensor P1 drops by 0.1MPa, the oxygen tank bottom drain valve B4 is controlled to close. Then the pressure reduction of the fuel tank R is started again. When the oxygen tank O and the fuel tank R are alternately reduced to 0MPa, the first stage of the pressure increase test is completed, and the parameters obtained from the test are recorded. The step-by-step pressure reduction can prevent the back pressure shock of the common bottom structure tank and avoid rupture.

[0116] During the pressurization process, when the liquid level value of the water supply tank H detected by the water supply tank level meter L1 reaches the preset low liquid level value, the water injection and replenishment control device K0 controls the opening of the water supply centrifugal pump inlet valve A0, the water supply centrifugal pump E0 and the water supply tank replenishment valve A1 to replenish water to the water supply tank H. When the liquid level value of the water supply tank H detected by the water supply tank level meter L1 reaches the preset high liquid level value, the water injection and replenishment control device K0 controls the closing of the water supply centrifugal pump inlet valve A0, the water supply centrifugal pump E0 and the water supply tank replenishment valve A1 to stop replenishing water to the water supply tank H.

[0117] S3. The second stage of the internal pressure explosion test of the rocket stainless steel tank:

[0118] The fuel tank R is pressurized to a second pressure value Ps2 after the equatorial plane of the rear bottom of the tank becomes unstable and before it is destroyed, and the changes in the material, process structure performance, etc. of the second stage test tank at the second pressure value after the equatorial plane of the rear bottom becomes unstable and before it is destroyed are determined.

[0119] Specifically, the second stage pressurization test:

[0120] After the first stage of the pressurization test, the oxygen tank O and the fuel tank R are re-pressurized step by step according to the automatic control operation steps of the first stage of the pressurization test. With 0.1MPa as the first level of pressurization, the fuel tank R is pressurized step by step to the second pressure value Ps2; the oxygen tank O is pressurized step by step to Ps2+0.1MPa.

[0121] Then the tank is depressurized:

[0122] According to the automatic depressurization operation steps of the first stage pressurization test, the oxygen tank O and the fuel tank R are depressurized step by step to 0MPa. When reducing the pressure step by step, the internal pressure of the fuel tank R is first reduced to the next level by 0.1MPa, and then the internal pressure of the oxygen tank O is reduced to the next level, and the pressure unloading of the rocket stainless steel tank is gradually completed. The second stage pressurization test is completed, and the test parameters are recorded.

[0123] S4. The third stage of the internal pressure explosion test of the rocket stainless steel tank: the explosion test of the rocket stainless steel tank is carried out, and the process is as follows:

[0124] The oxygen tank O is pressurized step by step until it explodes, and then the pressurization is stopped; or when the oxygen tank O is pressurized to a preset maximum pressure value Po of the oxygen tank O and the oxygen tank O does not explode, the pressurization is stopped.

[0125] When the fuel tank R is gradually pressurized to a preset maximum pressure value Pr of the fuel tank R, the pressurization is stopped. The maximum pressure value Pr of the fuel tank R is the pressure to prevent the oxygen tank O from exploding and resisting the back pressure shock.

[0126] Determine the changes in the material, process structure performance, etc. of the tank after the oxygen tank O explodes or at the maximum pressure value in the third stage test.

[0127] Specifically, the third stage pressurization test:

[0128] After refilling the oxygen tank O and fuel tank R with water according to the automatic control operation steps of the rocket stainless steel tank filling and replenishing stage, the pressure is automatically increased step by step according to the automatic control steps of the first stage. With 0.1MPa as the first-level pressure increase level, when the fuel tank R is gradually pressurized to the maximum pressure value Pr of the fuel tank R, the pressure increase of the fuel tank R is stopped; when the oxygen tank O is gradually pressurized until an explosion occurs and the pressure P1 of the oxygen tank O suddenly drops, the pressure increase of the oxygen tank O is stopped, or when the oxygen tank O is gradually pressurized to the required maximum pressure value Po, the pressure increase of the oxygen tank O is stopped.

[0129] Then the tank is depressurized:

[0130] According to the automatic depressurization operation steps of the first stage pressurization test, the oxygen tank O and the fuel tank R are depressurized step by step to 0MPa. When reducing the pressure step by step, the internal pressure of the fuel tank R is first reduced to the next level by 0.1MPa, and then the internal pressure of the oxygen tank O is reduced to the next level, gradually completing the depressurization of the rocket's stainless steel tank. The third stage of the pressurization test is completed, and the test parameters are recorded.

[0131] S5. The water injection and replenishment control device K0 controls the closure of the exhaust passage of the water supply tank H, and drains the water in the fire-fighting pipe a0, the oxygen tank booster constant pressure pump liquid inlet pipe b1, and the fuel tank booster constant pressure pump liquid inlet pipe c1.

[0132] Specifically, when the third stage pressurization test is completed, the water injection and replenishment control device K0 controls the closing of the water supply tank exhaust valve B0, and then manually opens all the first row of clean valves F1, the second row of clean valves F2 and the third row of clean valves F3 on the pipeline. After the pipeline is drained, the first row of clean valves F1, the second row of clean valves F2 and the third row of clean valves F3 are closed, and the internal pressure burst test of the rocket stainless steel tank is completed.

[0133] The rocket tank explosion test control system and control method provided by the present invention can realize the online automatic control function of the test, and can improve the working efficiency of the test and the accuracy of the test control compared with manual operation. The use of liquid to pressurize the rocket stainless steel tank can reduce the gas volume dissolved in the rocket stainless steel tank and reduce the risk of damage during the tank explosion test.

[0134] The above description is only an illustrative specific implementation manner of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A rocket tank explosion test control system, used for online control of the rocket stainless steel tank pressurization internal pressure explosion test, characterized in that: It includes a water injection and replenishment control device, an oxygen tank pressurization control device and a fuel tank pressurization control device; The rocket stainless steel tank adopts a common bottom structure tank, the upper part of the tank is an oxygen tank, the oxygen tank is used to fill liquid oxygen propellant; the lower part of the tank is a fuel tank, the fuel tank is used to fill liquid methane propellant; the oxygen tank and the fuel tank are both connected to a water supply tank; the water supply tank is used to provide a water source for liquid pressurization for the oxygen tank and the fuel tank; The water injection and replenishment control device is used to control the water supply centrifugal pump to fill the water supply tank, oxygen tank and fuel tank with water; the oxygen tank boost control device is used to control the oxygen tank boost constant pressure pump to take water from the water supply tank and then inject water into the oxygen tank and boost the pressure step by step; the fuel tank boost control device is used to control the fuel tank boost constant pressure pump to take water from the water supply tank and then inject water into the fuel tank and boost the pressure step by step; so as to complete the pressurized internal pressure explosion test of the rocket stainless steel tank.

2. The rocket tank explosion test control system according to claim 1, characterized in that: The water supply tank is connected to the fire-fighting pipe through a water supply pipe, and the fire-fighting pipe is connected to a fire-fighting water pool, wherein the fire-fighting water pool is used to provide water for the water supply tank, oxygen tank and fuel tank; the oxygen tank is connected to the fire-fighting pipe through an oxygen tank water injection pipe, and the fuel tank is connected to the fire-fighting pipe through a fuel tank water injection pipe.

3. The rocket tank explosion test control system according to claim 2, characterized in that: The water supply centrifugal pump is arranged on the fire-fighting pipeline, and a water supply centrifugal pump inlet valve is also arranged on the fire-fighting pipeline, and the water supply centrifugal pump inlet valve is used to open and close the fire-fighting pipeline; a water supply tank water replenishment valve is arranged on the water supply pipeline, and the water supply tank water replenishment valve is used to open and close the water supply pipeline; The oxygen box water injection pipeline is provided with an oxygen box water injection valve, and the oxygen box water injection valve is used to open and close the oxygen box water injection pipeline; the fuel box water injection pipeline is provided with a fuel box water injection valve, and the fuel box water injection valve is used to open and close the fuel box water injection pipeline; The water supply centrifugal pump, the water supply centrifugal pump liquid inlet valve, the water supply tank water replenishment valve, the oxygen tank water injection valve and the fuel tank water injection valve are all connected to the water injection and replenishment control device.

4. The rocket tank explosion test control system according to claim 2, characterized in that: The water supply tank is connected to the oxygen tank in sequence through the oxygen tank booster constant pressure pump liquid inlet pipe, the oxygen tank booster constant pressure pump and the oxygen tank booster constant pressure pump liquid outlet pipe; the water supply tank is connected to the fuel tank in sequence through the fuel tank booster constant pressure pump liquid inlet pipe, the fuel tank booster constant pressure pump and the fuel tank booster constant pressure pump liquid outlet pipe; The oxygen tank boost constant pressure pump is connected to the oxygen tank boost control device, and the fuel tank boost constant pressure pump is connected to the fuel tank boost control device.

5. The rocket tank explosion test control system according to claim 4, characterized in that: A water supply oxygen tank liquid delivery valve is arranged on the liquid inlet pipeline of the oxygen tank booster constant pressure pump, an oxygen tank liquid inlet valve is arranged on the liquid outlet pipeline of the oxygen tank booster constant pressure pump, the water supply oxygen tank liquid delivery valve is arranged near the first liquid outlet of the water supply storage tank, and the oxygen tank liquid inlet valve is arranged near the liquid inlet of the oxygen tank; A water supply fuel tank liquid delivery valve is provided on the liquid inlet pipeline of the fuel tank booster constant pressure pump, a fuel tank liquid inlet valve is provided on the liquid outlet pipeline of the fuel tank booster constant pressure pump, the water supply fuel tank liquid delivery valve is provided near the second liquid outlet of the water supply storage tank, and the fuel tank liquid inlet valve is provided near the liquid inlet of the fuel tank; The water supply oxygen tank liquid delivery valve and the oxygen tank liquid inlet valve are both connected to the oxygen tank boost control device, and the water supply fuel tank liquid delivery valve and the fuel tank liquid inlet valve are both connected to the fuel tank boost control device.

6. The rocket tank explosion test control system according to claim 1, characterized in that: The water supply tank is connected to a water supply tank level gauge, which is connected to a water injection and replenishment control device for remotely monitoring the liquid level in the water supply tank; The oxygen tank is connected to an oxygen tank level gauge, and the oxygen tank level gauge is connected to a water injection and replenishment control device for remotely monitoring the liquid level in the oxygen tank; The fuel tank is connected to a fuel tank liquid level gauge, and the fuel tank liquid level gauge is connected to a water injection and replenishment control device for remotely monitoring the liquid level in the fuel tank.

7. The rocket tank explosion test control system according to claim 1, characterized in that: A water supply tank exhaust pipe is arranged on the top of the water supply tank, and a water supply tank exhaust valve is arranged on the water supply tank exhaust pipe. The water supply tank exhaust valve is connected to the water injection and replenishment control device and is used to open and close the water supply tank exhaust pipe.

8. The rocket tank explosion test control system according to claim 1, characterized in that: An oxygen box overflow exhaust and liquid discharge pipeline is arranged on the top of the oxygen box, an oxygen box overflow exhaust and liquid discharge valve is arranged on the oxygen box overflow exhaust and liquid discharge pipeline, and the oxygen box overflow exhaust and liquid discharge valve is connected to the water injection and replenishment control device for opening and closing the oxygen box overflow exhaust and liquid discharge pipeline; The oxygen box overflow exhaust and liquid discharge pipeline is connected to an oxygen box pressure sensor, and the oxygen box pressure sensor is connected to an oxygen box pressurization control device for remotely monitoring the pressure value in the oxygen box.

9. The rocket tank explosion test control system according to claim 1, characterized in that: A fuel tank overflow exhaust and liquid drainage pipeline is provided on the top of the fuel tank, a fuel tank overflow exhaust and liquid drainage valve is provided on the fuel tank overflow exhaust and liquid drainage pipeline, and the fuel tank overflow exhaust and liquid drainage valve is connected to the water injection and replenishment control device for opening and closing the fuel tank overflow exhaust and liquid drainage pipeline; The fuel tank overflow exhaust and liquid discharge pipeline is connected to a fuel tank pressure sensor, and the fuel tank pressure sensor is connected to a fuel tank boost control device for remotely monitoring the pressure value in the fuel tank; The bottom of the oxygen box is connected to an oxygen box bottom drainage pipeline, and an oxygen box bottom drainage valve is arranged on the oxygen box bottom drainage pipeline. The oxygen box bottom drainage valve is connected to the oxygen box boost control device and is used to open and close the oxygen box bottom drainage pipeline; The bottom of the fuel tank is connected with a fuel tank bottom drainage pipe, and a fuel tank bottom drainage valve is arranged on the fuel tank bottom drainage pipe. The fuel tank bottom drainage valve is connected with a fuel tank boost control device and is used for opening and closing the fuel tank bottom drainage pipe.

10. A rocket tank explosion test control method based on the rocket tank explosion test control system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Water supply and replenishment stage before the test: The water injection and replenishment control device controls the opening of the fire-fighting pipeline, the water supply pipeline and the oxygen tank water injection pipeline to facilitate the filling of water into the water supply tank and the oxygen tank; when the oxygen tank is filled with water, the fuel tank water injection pipeline is controlled to open to facilitate the filling of water into the fuel tank; The first stage of the internal pressure burst test of the Arrow stainless steel tank: The fuel tank is pressurized to the first pressure value Ps1 before the rear bottom equatorial plane of the tank becomes unstable, and the changes in the material, process and structural performance of the first stage test tank at the first pressure value before the rear bottom equatorial plane becomes unstable are determined; The second stage of the rocket stainless steel tank internal pressure explosion test: The fuel tank is pressurized to a second pressure value Ps2 after the equatorial plane of the rear bottom of the tank becomes unstable and before it is destroyed, and the changes in the material, process and structural performance of the second stage test tank at the second pressure value after the equatorial plane of the rear bottom becomes unstable and before it is destroyed are determined; The third stage of the rocket stainless steel tank internal pressure explosion test: The process of blasting test on rocket stainless steel tank is as follows: When the oxygen box is pressurized step by step until it explodes, the pressurization is stopped, or when the oxygen box is pressurized to the preset maximum pressure value Po of the oxygen box and the oxygen box does not explode, the pressurization is stopped; when the fuel box is pressurized step by step to the preset maximum pressure value Pr of the fuel box, the pressurization is stopped; wherein the maximum pressure value Pr of the fuel box is the pressure to prevent the back pressure shock when the oxygen box explodes; determine the changes in the material, process structure and performance of the storage tank after the third stage test of the oxygen box explosion or at the maximum pressure value; The water injection and replenishment control device controls the closing of the exhaust passage of the water supply tank, and discharges the water in the fire-fighting pipeline, the oxygen tank booster constant pressure pump liquid inlet pipeline and the fuel tank booster constant pressure pump liquid inlet pipeline.

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