Rocket storage tank pressurizing internal pressure blasting process system

Abstract

The utility model provides a rocket storage tank pressurization internal pressure blasting process system which comprises a water injection and supplement control device, an oxygen tank pressurization control device, a combustion tank pressurization control device, an oxygen tank water supply pressure container, a combustion tank water supply pressure container and a nitrogen pressurization gas distribution plate. The rocket stainless steel storage tank is of a common-bottom structure, the upper portion of the storage tank is an oxygen tank, and the lower portion is a combustion tank. The oxygen box and the combustion box are correspondingly connected with the oxygen box water supply pressure container and the combustion box water supply pressure container respectively; the water injection and supplement control device is used for controlling the oxygen tank water supply pressure container, the combustion tank water supply pressure container and water injection cans of the oxygen tank and the combustion tank; the oxygen box pressurization control device and the combustion box pressurization control device are respectively used for controlling the nitrogen pressurization gas distribution plate to correspondingly provide pressurization nitrogen for the oxygen box water supply pressure container and the combustion box water supply pressure container; therefore, the pressurized internal pressure bursting test of the stainless steel storage tank of the rocket is completed. According to the utility model, the test work efficiency and the control accuracy can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aerospace, and particularly relates to a rocket tank pressurization internal pressure bursting process system. Background Technique

[0002] In the current aerospace field, most rocket tanks are made of traditional aluminum alloy materials. The cost of such materials and their processing is relatively high, resulting in an increase in the overall manufacturing cost of rocket tanks. To solve this problem, a feasible solution is to replace the material of the liquid oxygen methane rocket tank with stainless steel, which can greatly reduce the manufacturing cost of the rocket tank.

[0003] When the rocket tank is made of stainless steel, its design, material selection and manufacturing process are essentially different from those of traditional aluminum alloy tanks. To ensure that the modified stainless steel tank can withstand the expected internal pressure load, especially to verify the stability of its welded structure and the overall strength, it is necessary to conduct an internal pressure test on the rocket tank. The internal pressure test for the rocket tank aims to evaluate the structural strength of the stainless steel tank under normal temperature and full pressure conditions, and determine the maximum safe pressure bearing limit of the oxygen tank in the stainless steel tank under the same conditions. Summary of the Invention

[0004] To overcome at least to some extent the problems existing in the related art, the utility model provides a rocket tank pressurization internal pressure bursting process system.

[0005] According to an embodiment of the utility model, a rocket tank pressurization internal pressure bursting process system is provided, which is used for performing an internal pressure bursting test on a rocket stainless steel tank by pressurization. The system includes a water injection and replenishment control device, an oxygen tank pressurization control device, a fuel tank pressurization control device, an oxygen tank water supply pressure vessel, a fuel tank water supply pressure vessel and a nitrogen pressurization gas distribution board;

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

[0007] The water injection and replenishment control device is used to control the water supply pressure vessels of the oxygen tank, the fuel tank, and the oxygen tank and the fuel tank for water injection and filling; the oxygen tank pressurization control device is used to control the nitrogen pressurization and gas distribution board to provide pressurized nitrogen for the water supply pressure vessel of the oxygen tank, and the fuel tank pressurization control device is used to control the nitrogen pressurization and gas distribution board to provide pressurized nitrogen for the water supply pressure vessel of the fuel tank; so as to complete the pressurized internal pressure burst test of the rocket stainless steel storage tank.

[0008] According to the rocket storage tank pressurized internal pressure burst process system provided by the present invention, the water supply pressure vessel of the oxygen tank is connected to the fire fighting pipeline through a first liquid inlet pipeline, and the water supply pressure vessel of the fuel tank is connected to the first liquid inlet pipeline through a second liquid inlet pipeline;

[0009] The oxygen tank is connected to the fire fighting pipeline through an oxygen tank liquid inlet pipeline, an oxygen tank water injection pipeline and the first liquid inlet pipeline, and the fuel tank is connected to the fire fighting pipeline through a fuel tank liquid inlet pipeline, a fuel tank water injection pipeline and the second liquid inlet pipeline;

[0010] The fire fighting pipeline is used to connect to a water source.

[0011] Further, a water supply centrifugal pump and a water supply centrifugal pump liquid inlet valve are arranged on the fire fighting pipeline, and the water supply centrifugal pump liquid inlet valve is connected to the water injection and replenishment control device for switching on and off the fire fighting pipeline;

[0012] A first water replenishment valve is arranged on the first liquid inlet pipeline, and the first water replenishment valve is connected to the water injection and replenishment control device for switching on and off the first liquid inlet pipeline; a second water injection valve is arranged on the second liquid inlet pipeline, and the second water injection valve is connected to the water injection and replenishment control device for switching on and off the second liquid inlet pipeline;

[0013] An oxygen tank water injection valve is arranged on the oxygen tank water injection pipeline, and the oxygen tank water injection valve is connected to the water injection and replenishment control device for switching on and off the oxygen tank water injection pipeline; a fuel tank water injection valve is arranged on the fuel tank water injection pipeline, and the fuel tank water injection valve is connected to the water injection and replenishment control device for switching on and off the fuel tank water injection pipeline.

[0014] Further, the water supply pressure vessel of the oxygen tank is connected to the oxygen tank through an oxygen tank liquid inlet pipeline, and an oxygen tank liquid inlet valve is arranged on the oxygen tank liquid inlet pipeline, and the oxygen tank liquid inlet valve is connected to the oxygen tank pressurization control device for switching on and off the oxygen tank liquid inlet pipeline;

[0015] The water supply pressure vessel of the fuel tank is connected to the fuel tank through a fuel tank liquid inlet pipeline, and a fuel tank liquid inlet valve is arranged on the fuel tank liquid inlet pipeline, and the fuel tank liquid inlet valve is connected to the fuel tank pressurization control device for switching on and off the fuel tank liquid inlet pipeline.

[0016] Furthermore, an oxygen tank liquid inlet valve is provided on the oxygen tank liquid inlet pipeline. The oxygen tank liquid inlet valve is connected to an oxygen tank pressurization control device and is used to open and close the oxygen tank liquid inlet pipeline; a fuel tank liquid inlet valve is provided on the fuel tank liquid inlet pipeline. The fuel tank liquid inlet valve is connected to a fuel tank pressurization control device and is used to open and close the fuel tank liquid inlet pipeline.

[0017] According to the rocket tank pressurization internal pressure bursting process system provided by the present invention, the nitrogen gas pressurization gas distribution plate is connected to the oxygen tank water supply pressure vessel through a first pressurization pipeline. A gas supply valve and a first pressurization valve are provided on the first pressurization pipeline; the nitrogen gas pressurization gas distribution plate is connected to the fuel tank water supply pressure vessel through the first pressurization pipeline and a second pressurization pipeline. A second pressurization valve is provided on the second pressurization pipeline.

[0018] Further, a first pressurization orifice plate is provided on the first pressurization pipeline between the first pressurization valve and the air inlet of the oxygen tank water supply pressure vessel; a second pressurization orifice plate is provided on the second pressurization pipeline between the second pressurization valve and the air inlet of the fuel tank water supply pressure vessel.

[0019] Further, the oxygen tank water supply pressure vessel is connected with a first liquid level gauge. The first liquid level gauge is connected to a water injection and replenishment control device and is used to remotely monitor the water level in the oxygen tank water supply pressure vessel;

[0020] The fuel tank water supply pressure vessel is connected with a second liquid level gauge. The second liquid level gauge is connected to a water injection and replenishment control device and is used to remotely monitor the water level in the fuel tank water supply pressure vessel;

[0021] The oxygen tank is connected with a third liquid level gauge. The third liquid level gauge is connected to a water injection and replenishment control device and is used to remotely monitor the water level in the oxygen tank;

[0022] The fuel tank is connected with a fourth liquid level gauge. The fourth liquid level gauge is connected to a water injection and replenishment control device and is used to remotely monitor the water level in the fuel tank.

[0023] Further, the oxygen tank water supply pressure vessel is connected with a first pressure sensor. The first pressure sensor is connected to an oxygen tank pressurization control device and is used to remotely monitor the pressure when the oxygen tank water supply pressure vessel is pressurized;

[0024] The fuel tank water supply pressure vessel is connected with a second pressure sensor. The second pressure sensor is connected to a fuel tank pressurization control device and is used to remotely monitor the pressure when the fuel tank water supply pressure vessel is pressurized;

[0025] The oxygen tank is connected with a third pressure sensor. The third pressure sensor is connected to an oxygen tank pressurization control device and is used to remotely monitor the pressure value of the oxygen tank;

[0026] The fuel tank is connected with a fourth pressure sensor, and the fourth pressure sensor is connected with a fuel tank pressurization control device for remotely monitoring the pressure value of the fuel tank.

[0027] According to the rocket tank pressurization internal pressure blasting process system provided by the present invention, the oxygen tank water supply pressure vessel is connected with a first exhaust pipeline, and a first exhaust valve is arranged on the first exhaust pipeline. The first exhaust valve is connected with an oxygen tank pressurization control device for opening and closing the first exhaust pipeline.

[0028] The fuel tank water supply pressure vessel is connected with a second exhaust pipeline, and a second exhaust valve is arranged on the second exhaust pipeline. The second exhaust valve is connected with a fuel tank pressurization control device for opening and closing the second exhaust pipeline.

[0029] As can be seen from the above specific embodiments of the present invention, it has at least the following beneficial effects: The rocket tank pressurization internal pressure blasting process system provided by the present invention utilizes the fire pool of the liquid oxygen / methane liquid rocket engine test stand. The water injection and replenishment control device uses a water supply centrifugal pump to respectively fill the oxygen tank, fuel tank, oxygen tank water supply pressure vessel, and fuel tank water supply pressure vessel of the rocket stainless steel tank with water. After the oxygen tank and fuel tank are filled with water, the water supply centrifugal pump is stopped. Then, after the oxygen tank pressurization control device and the fuel tank pressurization control device respectively use the nitrogen pressurization gas distribution board to pressurize the oxygen tank water supply pressure vessel and the fuel tank water supply pressure vessel with nitrogen, the oxygen tank pressurization control device and the fuel tank pressurization control device respectively control the oxygen tank water supply pressure vessel and the fuel tank water supply pressure vessel to extrude and convey water to the oxygen tank and the fuel tank to perform water injection step-by-step pressurization. The first-stage fuel tank pressurization, the second-stage fuel tank pressurization, and the third-stage blasting test are sequentially completed according to the test requirements. During the process of performing water injection step-by-step pressurization on the oxygen tank and the fuel tank, the water injection and replenishment control device can automatically start water injection and replenishment according to the low liquid level values of the oxygen tank water supply pressure vessel and the fuel tank water supply pressure vessel. The present invention can realize the on-line automatic control of the test. Compared with manual operation, it can improve the working efficiency of the test and the accuracy of test control, and reduce the damage risk generated during the tank blasting test.

[0030] In the rocket tank pressurization internal pressure blasting process system provided by the present invention, the investment cost of each device is relatively low, the process system and control program are simple and optimized, and the pressurization pressure control accuracy is high. During the short-cycle test time, compared with using deionized water, using fire water as the pressurization medium has a lower investment cost.

[0031] It should be understood that the above general description and the following specific embodiments are only exemplary and explanatory, and cannot limit the scope claimed by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following attached drawings are part of the specification of the present utility model, which show embodiments of the present utility model. The attached drawings, together with the description in the specification, are used to illustrate the principle of the present utility model.

[0033] Figure 1 It is a schematic structural diagram of a rocket tank pressurization internal pressure bursting process system provided for an embodiment of the present utility model.

[0034] Explanation of reference numerals:

[0035] K0: Water injection and make-up control device; K1: Oxygen tank pressurization control device; K2: Fuel tank pressurization control device;

[0036] H1: Oxygen tank water supply pressure vessel; H2: Fuel tank water supply pressure vessel; P: Nitrogen pressurization gas distribution plate;

[0037] O: Oxygen tank; R: Fuel tank; X: Fire fighting pool;

[0038] E0: Water supply centrifugal pump; G: Filter before pump;

[0039] F1, First drain valve; F2, Second drain valve; F3, Third drain valve;

[0040] A0: Water supply centrifugal pump inlet valve; A1: First make-up valve; A2: Second water injection valve; A3: Oxygen tank inlet valve; A4: Fuel tank inlet valve; A5: First exhaust valve; A6: Second exhaust valve; A7: First safety valve; A8: Second safety valve; A9: First drain valve; A10: Second drain valve;

[0041] B0: Gas supply valve; B1: First pressurization valve; B2: Second pressurization valve; B3: Oxygen tank overflow exhaust and drain valve; B4: Fuel tank overflow exhaust and drain valve;

[0042] C1: First pressurization orifice plate; C2: Second pressurization orifice plate;

[0043] D1: Oxygen tank water injection valve; D2: Fuel tank water injection valve;

[0044] L1: First liquid level gauge; L2: Second liquid level gauge; L3: Third liquid level gauge; L4: Fourth liquid level gauge;

[0045] P1: First pressure sensor; P2: Second pressure sensor; P3: Third pressure sensor; P4: Fourth pressure sensor;

[0046] a0: Fire fighting pipeline; a1: First inlet pipeline; a2: Second inlet pipeline; a3: Oxygen tank inlet pipeline; a4: Fuel tank inlet pipeline; a5: First exhaust pipeline; a6: Second exhaust pipeline; a7: First safety exhaust pipeline; a8: Second safety exhaust pipeline; a9: First drain pipeline; a10: Second drain pipeline;

[0047] b1: The first supercharging pipeline; b2: The second supercharging pipeline; b3: The oxygen tank overflow exhaust and drainage pipeline; b4: The fuel tank overflow exhaust and drainage pipeline;

[0048] d1: The oxygen tank water injection pipeline; d2: The fuel tank water injection pipeline. Detailed implementation manners

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer and more understandable, the spirit of the content disclosed by the present utility model will be clearly described below with reference to the drawings and in detail. After any person skilled in the relevant technical field understands the embodiments of the content of the present utility model, the techniques taught by the content of the present utility model can be changed and modified, which does not deviate from the spirit and scope of the content of the present utility model.

[0050] The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model, but not to limit the present utility model. In addition, the same or similar reference numerals of elements / components used in the drawings and embodiments are used to represent the same or similar parts.

[0051] Regarding the "first", "second",... etc. used in this article, they do not particularly refer to the meaning of order or sequence, nor are they used to limit the present utility model. They are only used to distinguish elements or operations described with the same technical terms.

[0052] Regarding the directional terms used in this article, such as: up, down, left, right, front or back, etc., they are only references to the directions in the drawings. Therefore, the directional terms used are for explanation and not for limiting this creation.

[0053] Regarding the "including", "comprising", "having", "containing", etc. used in this article, they are all open-ended terms, that is, they mean including but not limited to.

[0054] Regarding the "and / or" used in this article, it includes any one or all combinations of the described things.

[0055] Regarding the "multiple" in this article, it includes "two" and "more than two"; regarding the "multiple groups" in this article, it includes "two groups" and "more than two groups".

[0056] Regarding the terms "substantially", "about", etc. used in this article, they are used to modify any quantity or error that can vary slightly, but these slight variations or errors will not change their essence. Generally, the range of such slight variations or errors modified by such terms can be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments or other values in some embodiments. Those skilled in the art should understand that the aforementioned values can be adjusted according to actual needs and are not limited thereto.

[0057] Certain terms used to describe the present utility model will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of the present utility model.

[0058] In the prior art, an internal pressure test can be performed on a rocket stainless steel storage tank using gas. The usual test procedure during the test is as follows:

[0059] First, fill the rocket stainless steel storage tank with water, and then use nitrogen or air to perform a pressurization test on the storage tank.

[0060] It should be noted that the unique ductility range of stainless steel material (about 10% to 25%) means that during the gas filling and pressure increase process, the stainless steel storage tank will expand to a certain extent. When the pressure continues to increase to reach the bursting limit of the storage tank material, a violent bursting phenomenon may occur, accompanied by a powerful shock wave, which will undoubtedly pose certain safety risks to the infrastructure and personnel safety at the test site.

[0061] In the prior art, an internal pressure test can also be performed on a rocket stainless steel storage tank using liquid. The usual test procedure during the test is as follows:

[0062] First, fill the rocket stainless steel storage tank with water, and then use equipment such as a water supply storage tank and a constant pressure variable frequency centrifugal pump to perform liquid pressurization on the rocket stainless steel storage tank.

[0063] However, the investment cost of the water supply storage tank and the constant pressure variable frequency centrifugal pump is relatively high, and there are relatively cumbersome and complex control procedures for the pressurization rate, pressurization amplitude, and pressure stabilization during the pump pressurization process, and the control accuracy is prone to deviation.

[0064] In view of the problems existing in the internal pressure bursting test of the rocket stainless steel storage tank by pressurizing it in two ways, namely gas or liquid, the present utility model adopts a process system and test method for pressurizing and internal pressure bursting of the rocket stainless steel storage tank by combining gas and liquid media. The investment cost of the equipment is low, the process system and control program are simple and optimized, the pressurization pressure control accuracy is high, and the bursting shock risk generated during the pressurization and bursting of the storage tank can be better avoided.

[0065] As Figure 1 shown, the rocket storage tank pressurization internal pressure bursting process system provided by the present utility model is used for performing an internal pressure bursting test on a rocket stainless steel storage tank by pressurizing it, and it includes a water injection and makeup control device K0, an oxygen tank pressurization control device K1, a fuel tank pressurization control device K2, an oxygen tank water supply pressure vessel H1, a fuel tank water supply pressure vessel H2, and a nitrogen pressurization and gas distribution board P.

[0066] 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. It should be noted that during the internal pressure explosion test, both the oxygen tank O and the fuel tank R are used to fill water. The oxygen tank O is connected to the oxygen tank water supply pressure vessel H1, and the fuel tank R is connected to the fuel tank water supply pressure vessel H2.

[0067] The water injection and replenishment control device K0 is used to control the water supply centrifugal pump E0 to fill water into the oxygen tank water supply pressure vessel H1, the fuel tank water supply pressure vessel H2, and the oxygen tank O and fuel tank R in the rocket stainless steel tank. The oxygen tank water supply pressure vessel H1 is used to provide a water source for liquid pressurization for the oxygen tank O, and the fuel tank water supply pressure vessel H2 is used to provide a water source for liquid pressurization for the fuel tank R.

[0068] The oxygen tank pressurization control device K1 is used to control the nitrogen pressurization distribution plate P to provide pressurized nitrogen for the oxygen tank water supply pressure vessel H1, and the fuel tank pressurization control device K2 is used to control the nitrogen pressurization distribution plate P to provide pressurized nitrogen for the fuel tank water supply pressure vessel H2.

[0069] The utility model utilizes the fire water pool X of the liquid oxygen / methane liquid rocket engine test bench, and uses the water injection and replenishment control device K0 to respectively inject water into the oxygen tank O, the fuel tank R, and the oxygen tank water supply pressure vessel H1 and the fuel tank water supply pressure vessel H2 of the rocket stainless steel tank through the water supply centrifugal pump E0. After the oxygen tank O and the fuel tank R are filled with water, the water supply centrifugal pump E0 is stopped. Then the oxygen tank pressurization control device K1 and the fuel tank pressurization control device K2 respectively use the nitrogen pressurization gas distribution plate P to correspondingly pressurize the oxygen tank water supply pressure vessel H1 and the fuel tank water supply pressure vessel H2 with nitrogen, and then the oxygen tank pressurization control device K1 and the fuel tank pressurization control device K2 respectively squeeze and deliver water to the oxygen tank O and the fuel tank R to perform water injection and step-by-step pressurization. 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 start water injection and replenishment according to the low liquid level values ​​of the oxygen tank water supply pressure vessel H1 and the fuel tank water supply pressure vessel H2.

[0070] The rocket tank pressurization internal pressure blasting process system provided by the utility model can realize online automatic control of the test. Compared with manual operation, it can improve the work efficiency of the test and the accuracy of the test control, and reduce the risk of damage during the tank blasting test. The investment cost of each device in the rocket tank pressurization internal pressure blasting process system provided by the utility model is relatively low, the process system and the control program are simple and optimized, and the pressurization pressure control accuracy is high. The assessment parameters of the rocket stainless steel tank internal pressure blasting test are obtained through the utility model.

[0071] In a specific embodiment, the oxygen tank water supply pressure vessel H1 is connected to the fire pipeline a0 through the first liquid inlet pipeline a1, and the fire pipeline a0 is connected to a fire pool X. The fuel tank water supply pressure vessel H2 is connected to the first liquid inlet pipeline a1 through the second liquid inlet pipeline a2.

[0072] The oxygen tank O in the rocket stainless steel storage tank is connected to the fire pipeline a0 through the oxygen tank liquid inlet pipeline a3, the oxygen tank water injection pipeline d1, and the first liquid inlet pipeline a1. The fuel tank R in the rocket stainless steel storage tank is connected to the fire pipeline a0 through the fuel tank liquid inlet pipeline a4, the fuel tank water injection pipeline d2, and the second liquid inlet pipeline a2.

[0073] The fire pool X is a fire pool for a liquid oxygen / methane liquid rocket engine test stand, and is used to provide water sources for the oxygen tank water supply pressure vessel H1, the fuel tank water supply pressure vessel H2, and the rocket stainless steel storage tank. Using fire water instead of deionized water for testing in a short period of time can reduce the test cost.

[0074] In the above embodiment, the water supply centrifugal pump E0 is arranged on the fire pipeline a0. The water supply centrifugal pump E0 is a horizontal variable frequency centrifugal pump, and is used to pump fire water from the fire pool X and then inject and supplement water for the oxygen tank water supply pressure vessel H1, the fuel tank water supply pressure vessel H2, the oxygen tank O, and the fuel tank R of the rocket stainless steel storage tank respectively.

[0075] In this embodiment, a water supply centrifugal pump inlet valve A0 is further arranged on the fire pipeline a0. The water supply centrifugal pump inlet valve A0 is used to open and close the fire pipeline a0. The water supply centrifugal pump E0 is connected to the injection and water supplement control device K0, and is used to pump fire water from the fire pool X through the fire pipeline a0.

[0076] The water supply centrifugal pump inlet valve A0 can adopt a switch-controlled pneumatic globe valve.

[0077] In the above embodiment, a first water supplement valve A1 is arranged on the first liquid inlet pipeline a1. The first water supplement valve A1 is connected to the injection and water supplement control device K0, and is used to open and close the first liquid inlet pipeline a1. A second water injection valve A2 is arranged on the second liquid inlet pipeline a2. The second water injection valve A2 is connected to the injection and water supplement control device K0, and is used to open and close the second liquid inlet pipeline a2.

[0078] Both the first water supplement valve A1 and the second water injection valve A2 adopt switch-controlled pneumatic globe valves.

[0079] In the above embodiment, an oxygen tank water injection valve D1 is arranged on the oxygen tank water injection pipeline d1. The oxygen tank water injection valve D1 is connected to the injection and water supplement control device K0, and is used to open and close the oxygen tank water injection pipeline d1. A fuel tank water injection valve D2 is arranged on the fuel tank water injection pipeline d2. The fuel tank water injection valve D2 is connected to the injection and water supplement control device K0, and is used to open and close the fuel tank water injection pipeline d2.

[0080] In the above embodiments, the oxygen tank water supply pressure vessel H1 is connected to the oxygen tank O through the oxygen tank liquid inlet pipeline a3. An oxygen tank liquid inlet valve A3 is provided on the oxygen tank liquid inlet pipeline a3, and the oxygen tank liquid inlet valve A3 is connected to the oxygen tank pressurization control device K1 for opening and closing the oxygen tank liquid inlet pipeline a3.

[0081] The fuel tank water supply pressure vessel H2 is connected to the fuel tank R through the fuel tank liquid inlet pipeline a4. A fuel tank liquid inlet valve A4 is provided on the fuel tank liquid inlet pipeline a4, and the fuel tank liquid inlet valve A4 is connected to the fuel tank pressurization control device K2 for opening and closing the fuel tank liquid inlet pipeline a4.

[0082] Both the oxygen tank liquid inlet valve A3 and the fuel tank liquid inlet valve A4 can adopt a switch-controlled pneumatic globe valve.

[0083] In the above embodiments, a pre-pump filter G is further provided on the fire pipeline a0. The pre-pump filter G is used to filter impurities in the fire water pumped by the fire water supply centrifugal pump E0 from the fire pool X. On the opposite side of the fire water supply centrifugal pump E0 connected to the pre-pump filter G, a first drain valve F1 is provided on the first liquid inlet pipeline a1, and the first drain valve F1 is used to drain the water in the first liquid inlet pipeline a1.

[0084] In the above embodiments, the nitrogen gas pressurization and gas distribution plate P is connected to the oxygen tank water supply pressure vessel H1 through the first pressurization pipeline b1. A gas supply valve B0 and a first pressurization valve B1 are provided on the first pressurization pipeline b1. Among them, the gas supply valve B0 can be arranged near the air outlet of the nitrogen gas pressurization and gas distribution plate P, and the first pressurization valve B1 can be arranged near the air inlet of the oxygen tank water supply pressure vessel H1.

[0085] Between the first pressurization valve B1 and the air inlet of the oxygen tank water supply pressure vessel H1, a first pressurization orifice plate C1 is further provided on the first pressurization pipeline b1. The first pressurization orifice plate C1 adopts a bowl-shaped structure, and the first pressurization orifice plate C1 is used to limit the flow rate when nitrogen gas pressurizes the oxygen tank water supply pressure vessel H1.

[0086] The nitrogen gas pressurization and gas distribution plate P is connected to the fuel tank water supply pressure vessel H2 through the first pressurization pipeline b1 and the second pressurization pipeline b2. A second pressurization valve B2 is provided on the second pressurization pipeline b2, and the second pressurization valve B2 can be arranged near the air inlet of the fuel tank water supply pressure vessel H2.

[0087] Between the second pressurization valve B2 and the air inlet of the fuel tank water supply pressure vessel H2, a second pressurization orifice plate C2 is further provided on the second pressurization pipeline b2. The second pressurization orifice plate C2 adopts a bowl-shaped structure, and the second pressurization orifice plate C2 is used to limit the flow rate when nitrogen gas pressurizes the fuel tank water supply pressure vessel H2.

[0088] In the above embodiments, the oxygen tank water supply pressure vessel H1 is connected with a second drain valve F2, and the fuel tank water supply pressure vessel H2 is connected with a third drain valve F3. Both the second drain valve F2 and the third drain valve F3 are manual stop valves. The second drain valve F2 is used for manually operating the drainage of the oxygen tank water supply pressure vessel H1, and the third drain valve F3 is used for manually operating the drainage of the fuel tank water supply pressure vessel H2.

[0089] In the above embodiments, the oxygen tank water supply pressure vessel H1 is connected with a first liquid level gauge L1, and the first liquid level gauge L1 is connected with the water injection and make-up control device K0, and is used for remotely monitoring the water level in the oxygen tank water supply pressure vessel H1.

[0090] The fuel tank water supply pressure vessel H2 is connected with a second liquid level gauge L2, and the second liquid level gauge L2 is connected with the water injection and make-up control device K0, and is used for remotely monitoring the water level in the fuel tank water supply pressure vessel H2.

[0091] In the above embodiments, the oxygen tank water supply pressure vessel H1 is connected with a first pressure sensor P1, and the first pressure sensor P1 is connected with the oxygen tank pressurization control device K1, and is used for remotely monitoring the pressure when the oxygen tank water supply pressure vessel H1 is pressurized.

[0092] The fuel tank water supply pressure vessel H2 is connected with a second pressure sensor P2, and the second pressure sensor P2 is connected with the fuel tank pressurization control device K2, and is used for remotely monitoring the pressure when the fuel tank water supply pressure vessel H2 is pressurized.

[0093] In the above embodiments, the oxygen tank water supply pressure vessel H1 is connected with a first exhaust pipe a5, and the gas in the oxygen tank water supply pressure vessel H1 is discharged to the atmosphere through the first exhaust pipe a5. A first exhaust valve A5 is arranged on the first exhaust pipe a5, and the first exhaust valve A5 is connected with the oxygen tank pressurization control device K1, and is used for switching on and off the first exhaust pipe a5.

[0094] The fuel tank water supply pressure vessel H2 is connected with a second exhaust pipe a6, and the gas in the fuel tank water supply pressure vessel H2 is discharged to the atmosphere through the second exhaust pipe a6. A second exhaust valve A6 is arranged on the second exhaust pipe a6, and the second exhaust valve A6 is connected with the fuel tank pressurization control device K2, and is used for switching on and off the second exhaust pipe a6.

[0095] Both the first exhaust valve A5 and the second exhaust valve A6 are switch-controlled pneumatic stop valves.

[0096] The oxygen tank water supply pressure vessel H1 is further connected with a first safety exhaust pipe a7, and a first safety valve A7 is arranged on the first safety exhaust pipe a7. The first safety valve A7 is used for switching on and off the first safety exhaust pipe a7. When the oxygen tank water supply pressure vessel H1 is overpressured, safe exhaust discharge can be carried out through the first safety exhaust pipe a7.

[0097] The fuel tank water supply pressure vessel H2 is also connected to a second safety exhaust pipe a8, on which a second safety valve A8 is provided, and the second safety valve A8 is used to open and close the second safety exhaust pipe a8. When the fuel tank water supply pressure vessel H2 is over-pressured, safe exhaust can be discharged through the second safety exhaust pipe a8.

[0098] In the above embodiment, a first liquid discharge pipe a9 is provided at the bottom of the oxygen tank O, and a first liquid discharge valve A9 is provided on the first liquid discharge pipe a9, and the first liquid discharge valve A9 is used to open and close the first liquid discharge pipe a9. The first liquid discharge valve A9 is connected to the oxygen tank pressurization control device K1. When it is necessary to relieve the pressure of the oxygen tank O, the oxygen tank pressurization control device K1 controls the first liquid discharge valve A9 to open to relieve the pressure of the oxygen tank O.

[0099] A second drain pipe a10 is provided at the bottom of the fuel tank R, and a second drain valve A10 is provided on the second drain pipe a10. The second drain valve A10 is used to open and close the second drain pipe a10. The second drain valve A10 is connected to the fuel tank pressure control device K2. When it is necessary to relieve the pressure of the fuel tank R, the fuel tank pressure control device K2 controls the second drain valve A10 to open to relieve the pressure of the fuel tank R.

[0100] In the above embodiment, the oxygen tank O is connected to a third liquid level meter L3, and the third liquid level meter L3 is connected to the water injection and replenishment control device K0, and is used to remotely monitor the water level in the oxygen tank O.

[0101] The fuel tank R is connected to a fourth liquid level gauge L4, which is connected to the water injection and replenishment control device K0 and is used for remotely monitoring the water level in the fuel tank R.

[0102] In the above embodiment, the oxygen box O is connected to a third pressure sensor P3, and the third pressure sensor P3 is connected to the oxygen box pressurization control device K1, and is used to remotely monitor the pressure value of the oxygen box O.

[0103] The fuel tank R is connected to a fourth pressure sensor P4 , which is connected to the fuel tank pressurization control device K2 and is used for remotely monitoring the pressure value of the fuel tank R .

[0104] In the above embodiment, the top of the oxygen box O is connected to the oxygen box overflow exhaust and drainage pipe b3, and the oxygen box overflow exhaust and drainage pipe b3 is provided with an oxygen box overflow exhaust and drainage valve 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.

[0105] The top of the fuel tank R is connected to a fuel tank overflow exhaust and drainage pipe b4, on which a fuel tank overflow exhaust and drainage valve B4 is provided. The fuel tank overflow exhaust and drainage valve B4 is connected to the water injection and replenishment control device K0, and is used to open and close the fuel tank overflow exhaust and drainage pipe b4.

[0106] The oxygen tank overflow exhaust and drain valve B3 and the fuel tank overflow exhaust and drain valve B4 both use switch-controlled pneumatic stop valves.

[0107] In the above embodiments, the water injection and replenishment control device K0 is connected to the water supply centrifugal pump inlet valve A0, the first water replenishment valve A1, the second water injection valve A2, the first exhaust valve A5, the second exhaust valve A6, the oxygen tank water injection valve D1, the fuel tank water injection valve D2, the oxygen tank overflow exhaust and drain valve B3, the fuel tank overflow exhaust and drain valve B4, the water supply centrifugal pump E0, the first liquid level gauge L1, the second liquid level gauge L2, the third liquid level gauge L3, and the fourth liquid level gauge L4 send 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 first water replenishment valve A1, the second water injection valve A2, the oxygen tank water injection valve D1 and the fuel tank water injection valve D2 to open or close according to the received liquid level information, and controls the water supply centrifugal pump E0 to operate or stop the operation, so as to control the water injection and replenishment or stop the water injection and replenishment operation of the oxygen tank water supply pressure vessel H1, the fuel tank water supply pressure vessel H2, the oxygen tank O and the fuel tank R. The water injection and replenishment control device K0 is also used to remotely control the first exhaust valve A5, the second exhaust valve A6, the oxygen tank overflow exhaust and liquid discharge valve B3 and the fuel tank overflow exhaust and liquid discharge valve B4, so as to exhaust or drain the oxygen tank water supply pressure vessel H1, the fuel tank water supply pressure vessel H2, the oxygen tank O and the fuel tank R.

[0108] The oxygen tank pressurization control device K1 is a control device for remotely injecting water and pressurizing the oxygen tank O of the rocket's stainless steel tank. The oxygen tank pressurization control device K1 is remotely interlocked with the air supply valve B0, the first boosting valve B1, the oxygen tank overflow exhaust and liquid discharge valve B3, the oxygen tank liquid inlet valve A3, the first exhaust valve A5, the first liquid discharge valve A9, the first pressure sensor P1, and the third pressure sensor P3 for remote control.

[0109] The fuel tank pressurization control device K2 is a control device for remotely injecting water and pressurizing the fuel tank of the rocket's stainless steel tank. The fuel tank pressurization control device K2 is remotely interlocked with the air supply valve B0, the second boosting valve B2, the fuel tank overflow exhaust and liquid drain valve B4, the fuel tank liquid inlet valve A4, the second exhaust valve A6, the second liquid drain valve A10, the second pressure sensor P2 and the fourth pressure sensor P4.

[0110] Based on the rocket tank pressurization internal pressure explosion process system provided by the utility model, the utility model also provides a rocket tank pressurization internal pressure explosion test method, which includes the following steps:

[0111] S1. Water supply and replenishment stage before the test:

[0112] The water injection and replenishment control device K0 controls the opening of the first exhaust valve A5, the second exhaust valve A6, the oxygen box overflow exhaust and drain valve B3 and the fuel box overflow exhaust and drain valve B4, so that the gases in the oxygen box water supply pressure vessel H1, the fuel box water supply pressure vessel H2, the oxygen box O and the fuel box R are discharged into the atmosphere from the first exhaust pipe a5, the second exhaust pipe a6, the oxygen box overflow exhaust and drain pipe b3 and the fuel box overflow exhaust and drain pipe b4 respectively, so as to facilitate the water injection and replenishment for the oxygen box water supply pressure vessel H1, the fuel box water supply pressure vessel H2, the oxygen box O and the fuel tank R.

[0113] The water injection and replenishment control device K0 controls to open the water supply centrifugal pump inlet valve A0, the water supply centrifugal pump E0, the first replenishment valve A1, the second water injection valve A2, the oxygen tank water injection valve D1 and the fuel tank water injection valve D2 in sequence, so that the fire water in the fire water pool X flows into the oxygen tank water supply pressure vessel H1 through the fire pipe a0 and the first liquid inlet pipe a1, flows into the fuel tank water supply pressure vessel H2 through the fire pipe a0, the first liquid inlet pipe a1 and the second liquid inlet pipe a2, flows into the oxygen tank O through the fire pipe a0, the first liquid inlet pipe a1 and the oxygen tank water injection pipe d1, and flows into the fuel tank R through the fire pipe a0, the first liquid inlet pipe a1 and the fuel tank water injection pipe d2, so as to perform water injection operations on the oxygen tank water supply pressure vessel H1, the fuel tank water supply pressure vessel H2, the oxygen tank O and the fuel tank R.

[0114] The first liquid 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 oxygen tank water supply pressure vessel H1 reaches the preset high liquid level value, the water injection and replenishment control device K0 controls the closing of the first water replenishment valve A1 to stop injecting water into the oxygen tank water supply pressure vessel H1.

[0115] The second 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 fuel tank water supply pressure vessel H2 reaches the preset high liquid level value, the water injection and replenishment control device K0 controls the closing of the second water replenishment valve A2 to stop injecting water into the fuel tank water supply pressure vessel H2.

[0116] The third 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 oxygen tank O reaches the preset high liquid level value, the water injection and replenishment control device K0 controls the closing of the oxygen tank water injection valve D1 to stop injecting water into the oxygen tank O.

[0117] The fourth liquid level meter L4 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 high liquid level value, the water injection and replenishment control device K0 controls the closure of the fuel tank water injection valve D2 to stop injecting water into the fuel tank R.

[0118] S2. The first stage during the internal pressure bursting test of the rocket stainless steel storage tank:

[0119] Pressurize the fuel tank R to the first pressure value P before the instability of the equatorial plane at the bottom of the storage tank. s1 , and pressurize the oxygen tank to P s1 + ΔP s , and determine the changes in the material, process structure performance, etc. of the test storage tank at the first pressure value before the instability of the equatorial plane at the bottom. Among them, ΔP s represents the unit amount of increased pressure for each level, and its specific value is determined according to the requirements of the bursting test. The unit amount of increased pressure ΔP s can be 0.1 Mpa, 0.2 Mpa, or 0.3 MPa, etc.

[0120] Specifically, according to the requirements of the test operation steps, set the automatic control timing sequences for the oxygen tank pressure increasing control device K1 and the fuel tank pressure increasing control device K2 respectively: When the unit amount of increased pressure ΔP s is 0.1 Mpa, with 0.1 MPa as one level of pressure increasing grade, the fuel tank R is gradually loaded to the first pressure value P s1 ; the oxygen tank O is gradually loaded to P s1 + 0.1 MPa. Subsequently, the oxygen tank O and the fuel tank R are gradually depressurized to 0 MPa. When the grade decreases, first depressurize the internal pressure of the fuel tank R by 0.1 MPa grade to the next grade, and then depressurize the internal pressure of the oxygen tank O to the next grade.

[0121] The first stage of pressure increasing test:

[0122] The oxygen tank pressure increasing control device K1 controls to close the oxygen tank overflow exhaust and drain valve B3 and the first exhaust valve A5, and then sequentially controls to open the air supply valve B0 and the water supply and oxygen supply tank liquid supply valve B1. The pressurized nitrogen provided by the nitrogen pressure increasing distribution board P passes through the first pressure increasing valve B1 and the first pressure increasing pipeline b1 to conduct nitrogen pressure increasing on the oxygen tank water supply pressure vessel H1. When the pressure increases to 0.1 Mpa, the oxygen tank pressure increasing control device K1 controls to open the oxygen tank liquid inlet valve A3, and the water in the oxygen tank water supply pressure vessel H1 is extruded and transported to the oxygen tank O through the oxygen tank liquid inlet pipeline a3 for liquid pressure increasing.

[0123] When the pressure value detected by the third pressure sensor P3 reaches 0.1 MPa, start the fuel tank pressure increasing control device K2. The fuel tank pressure increasing control device K2 controls to close the fuel tank overflow exhaust and drain valve B4 and the second exhaust valve A6, and then controls to open the second pressure increasing valve B2. The pressurized nitrogen provided by the nitrogen pressure increasing distribution board P passes through the second pressure increasing valve B2 and the second pressure increasing pipeline b2 to conduct nitrogen pressure increasing on the fuel tank water supply pressure vessel H2. When the pressure increases to 0.1 Mpa, the fuel tank pressure increasing control device K2 controls to open the fuel tank liquid inlet valve A4, and the water in the fuel tank water supply pressure vessel H2 is extruded and transported to the fuel tank R through the fuel tank liquid inlet pipeline a4 for liquid pressure increasing.

[0124] When the pressure value detected by the fourth pressure sensor P4 reaches 0.1 MPa, start the oxygen tank pressurization control device K1 to pressurize the liquid in the oxygen tank O to 0.2 MPa, and then start the fuel tank pressurization control device K2 to pressurize the liquid in the fuel tank R to 0.2 MPa. The oxygen tank O and the fuel tank R alternately pressurize the liquid in such a way that each pressurization level is 0.1 MPa. Wait until the pressure value in the oxygen tank O detected by the third pressure sensor P3 is P s1 +0.1 MPa, and the pressure value in the fuel tank R detected by the fourth pressure sensor P4 is P s1 MPa. The oxygen tank pressurization control device K1 controls to close the first pressurizing valve B1 and the oxygen tank liquid inlet valve A3 in sequence, and the fuel tank pressurization control device K2 controls to close the second pressurizing valve B2 and the fuel tank liquid inlet valve A4 to stop pressurizing the oxygen tank O and the fuel tank R.

[0125] Subsequently, depressurize the rocket stainless steel storage tank:

[0126] The fuel tank pressurization control device K2 controls to open the second drain valve A10 to depressurize the fuel tank R, and the water in the fuel tank R is discharged through the second drain pipe a10. When the pressure value in the fuel tank R detected by the fourth pressure sensor P4 drops by 0.1 MPa, control to close the second drain valve A10. The oxygen tank pressurization control device K1 controls to open the first drain valve A9 so that the water in the oxygen tank O is discharged through the first drain pipe a9. When the pressure value in the oxygen tank O detected by the third pressure sensor P3 drops by 0.1 MPa, the oxygen tank pressurization control device K1 controls to close the first drain valve A9. Then start to depressurize the fuel tank R again. The oxygen tank O and the fuel tank R alternately depressurize until 0 MPa to complete the first-stage pressurization test, and record the parameters obtained from the test. Step-by-step depressurization can prevent the anti-pressure shock of the co-bottom structure storage tank and avoid rupture.

[0127] During the pressurization process, when the liquid level value of the oxygen tank water supply pressure vessel H1 detected by the first liquid level gauge L1 reaches the preset low liquid level value, and the liquid level value of the fuel tank water supply pressure vessel H2 detected by the second liquid level gauge L2 reaches the preset low liquid level value, the water injection and replenishment control device K0 controls to open the water supply centrifugal pump liquid inlet valve A0, the water supply centrifugal pump E0, the first replenishment valve A1 and the second water injection valve A2 to replenish water to the oxygen tank water supply pressure vessel H1 and the fuel tank water supply pressure vessel H2. When the liquid level value of the oxygen tank water supply pressure vessel H1 detected by the first liquid level gauge L1 reaches the preset high liquid level value, and the liquid level value of the fuel tank water supply pressure vessel H2 detected by the second liquid level gauge L2 reaches the preset high liquid level value, the water injection and replenishment control device K0 controls to close the water supply centrifugal pump liquid inlet valve A0, the water supply centrifugal pump E0, the first replenishment valve A1 and the second water injection valve A2 to stop replenishing water to the oxygen tank water supply pressure vessel H1 and the fuel tank water supply pressure vessel H2.

[0128] S3. The second stage during the internal pressure burst test of the rocket stainless steel storage tank:

[0129] Pressurize the fuel tank R to the second pressure value P after the bottom equatorial plane of the storage tank becomes unstable and before it is damaged. s2 , and pressurize the oxygen tank to P s2 + ΔP s , and determine the changes in the material, process structure performance, etc. of the test storage tank at the second pressure value after the bottom equatorial plane becomes unstable and before it is damaged in the second stage.

[0130] Specifically, the second-stage pressurization test:

[0131] After the first-stage pressurization test is completed, the oxygen tank O and the fuel tank R are re-pressurized step by step automatically according to the automatic control operation steps of the first-stage pressurization experiment. When the pressurization unit amount ΔP s is 0.1 Mpa, with 0.1 MPa as one-level pressurization grade, the fuel tank R is pressurized step by step to the second pressure value P s2 ; the oxygen tank O is pressurized step by step to P s2 + 0.1 MPa.

[0132] Subsequently, depressurize the storage tank:

[0133] Implement 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 0 MPa. When depressurizing by grade, first depressurize the internal pressure of the fuel tank R to the next grade according to 0.1 MPa grade, and then depressurize the internal pressure of the oxygen tank O to the next grade, and gradually complete the depressurization of the rocket stainless steel storage tank. The second-stage pressurization test is completed, and record the parameters obtained from the test.

[0134] S4. The third stage during the internal pressure burst test of the rocket stainless steel storage tank: Conduct a burst test on the rocket stainless steel storage tank, and the process is as follows:

[0135] Pressurize the oxygen tank O step by step until the pressurization stops when a burst occurs, or stop pressurizing when the oxygen tank O is pressurized to the preset maximum pressure value P o of the oxygen tank O and the oxygen tank O does not burst.

[0136] Pressurize the fuel tank R step by step until the pressurization stops when it reaches the preset maximum pressure value P r of the fuel tank R. Among them, the maximum pressure value P r of the fuel tank R is the pressure to resist the reverse pressure impact when the oxygen tank O bursts.

[0137] Determine the changes in the material, process structure performance, etc. of the storage tank after the oxygen tank O bursts or at the maximum pressure value in the third stage.

[0138] Specifically, the third-stage pressurization test:

[0139] 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 of pressure increase, the fuel tank R is gradually pressurized to the maximum pressure value P of the fuel tank R. r When the pressure value of the oxygen tank O detected by the third pressure sensor P3 suddenly drops, the pressure of the oxygen tank O is stopped, or the oxygen tank O is gradually pressurized to the required maximum pressure value P o When , stop the oxygen tank O pressurization.

[0140] Then the tank is depressurized:

[0141] 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.

[0142] S5. The oxygen box pressurization control device K1 or the fuel box pressurization control device K2 controls the closing of the air supply valve B0, and discharges the gas in the first pressurization pipeline b1 and the second pressurization pipeline b2 and the oxygen box water supply pressure vessel H1 and the fuel box water supply pressure vessel H2, so that the pressure values ​​in the oxygen box water supply pressure vessel H1 and the fuel box water supply pressure vessel H2 are the atmospheric pressure values; manually open the second drain valve and the third drain valve to drain the water in the fire-fighting pipeline a0, the first liquid inlet pipeline a1, the second liquid inlet pipeline a2, the oxygen box liquid inlet pipeline a3, the fuel box liquid inlet pipeline a4, the oxygen box overflow exhaust drainage pipeline b3 and the fuel box overflow exhaust drainage pipeline b4.

[0143] Specifically, when the third-stage pressurization test is completed, the oxygen tank pressurization control device K1 or the fuel tank pressurization control device K2 controls to close the air supply valve B0. Then, the oxygen tank pressurization control device K1 controls to open the first pressurization valve B1 and the first exhaust valve A5, and the fuel tank pressurization control device K2 controls to open the second pressurization valve B2 and the second exhaust valve A6 to release the pressure in the first pressurization pipeline b1, the second pressurization pipeline b2, the oxygen tank water supply pressure vessel H1, and the fuel tank water supply pressure vessel H2. When the pressure values detected by the first pressure sensor P1 and the second pressure sensor P2 are atmospheric pressure values, the oxygen tank pressurization control device K1 controls to close the first pressurization valve B1 and the first exhaust valve A5, and the fuel tank pressurization control device K2 controls to close the second pressurization valve B2 and the second exhaust valve A6. Then, manually open all pipelines such as the fire pipeline a0, the first liquid inlet pipeline a1, the second liquid inlet pipeline a2, the oxygen tank liquid inlet pipeline a3, the fuel tank liquid inlet pipeline a4, the oxygen tank overflow exhaust and drainage pipeline b3, and the fuel tank overflow exhaust and drainage pipeline b4, as well as the second drain valve F2 and the third drain valve F3. After the water in the pipelines is drained, manually close the second drain valve F2 and the third drain valve F3, and the internal pressure bursting test of the rocket stainless steel storage tank is completed.

[0144] By adopting the rocket storage tank pressurization internal pressure bursting process system and test method provided by the present utility model, which combines gas and liquid media, the online automatic control function of the test can be realized. Compared with manual operation, it can improve the working efficiency of the test and the accuracy of test control, and reduce the damage risk generated during the storage tank bursting test. In addition, the equipment investment cost in the present utility model is relatively low, the process system and control program are simple and optimized, the pressurization pressure control accuracy is high, and the evaluation parameters of the internal pressure bursting test of the rocket stainless steel storage tank can be obtained.

[0145] The above are only the schematic specific embodiments of the present utility model. Without departing from the concept and principle of the present utility model, any equivalent changes and modifications made by any person skilled in the art shall fall within the protection scope of the present utility model.

Claims

1. A rocket tank pressurization internal pressure explosion process system, used for pressurizing a rocket stainless steel tank and performing an internal pressure explosion test, characterized in that: It includes a water injection and replenishment control device, an oxygen tank pressurization control device, a fuel tank pressurization control device, an oxygen tank water supply pressure vessel, a fuel tank water supply pressure vessel and a nitrogen pressurization distribution plate; 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 is connected to the oxygen tank water supply pressure vessel, the oxygen tank water supply pressure vessel is used to provide a water source for liquid pressurization for the oxygen tank; the fuel tank is connected to the fuel tank water supply pressure vessel, the fuel tank water supply pressure vessel is used to provide a water source for liquid pressurization for the fuel tank; The water injection and replenishment control device is used to control the oxygen box water supply pressure vessel, the fuel box water supply pressure vessel, and the oxygen box and the fuel box for water injection and canning; the oxygen box pressurization control device is used to control the nitrogen pressurization distribution plate to provide pressurized nitrogen for the oxygen box water supply pressure vessel, and the fuel tank pressurization control device is used to control the nitrogen pressurization distribution plate to provide pressurized nitrogen for the fuel tank water supply pressure vessel; so as to complete the pressurized internal pressure explosion test of the rocket stainless steel tank.

2. The rocket tank pressurization internal pressure blasting process system according to claim 1 is characterized in that: The oxygen tank water supply pressure vessel is connected to the fire protection pipeline through a first liquid inlet pipeline, and the fuel tank water supply pressure vessel is connected to the first liquid inlet pipeline through a second liquid inlet pipeline; The oxygen box is connected to the fire fighting pipe via an oxygen box liquid inlet pipe, an oxygen box water injection pipe and the first liquid inlet pipe, and the fuel box is connected to the fire fighting pipe via a fuel box liquid inlet pipe, a fuel box water injection pipe and the second liquid inlet pipe; The fire fighting pipeline is used for connecting to a water source.

3. The rocket tank pressurization internal pressure blasting process system according to claim 2 is characterized in that: The fire-fighting pipeline is provided with a water supply centrifugal pump and a water supply centrifugal pump liquid inlet valve, and the water supply centrifugal pump liquid inlet valve is connected to the water injection and replenishment control device for opening and closing the fire-fighting pipeline; The first liquid inlet pipeline is provided with a first water replenishment valve, which is connected to the water injection and replenishment control device and is used to open and close the first liquid inlet pipeline; the second liquid inlet pipeline is provided with a second water injection valve, which is connected to the water injection and replenishment control device and is used to open and close the second liquid inlet pipeline; An oxygen box water injection valve is provided on the oxygen box water injection pipeline, and the oxygen box water injection valve is connected to the water injection and replenishment control device for opening and closing the oxygen box water injection pipeline; a fuel box water injection valve is provided on the fuel box water injection pipeline, and the fuel box water injection valve is connected to the water injection and replenishment control device for opening and closing the fuel box water injection pipeline.

4. The rocket tank pressurization internal pressure blasting process system according to claim 2 is characterized in that: The oxygen box water supply pressure vessel is connected to the oxygen box through an oxygen box liquid inlet pipeline, an oxygen box liquid inlet valve is provided on the oxygen box liquid inlet pipeline, and the oxygen box liquid inlet valve is connected to the oxygen box boost control device for opening and closing the oxygen box liquid inlet pipeline; The fuel tank water supply pressure vessel is connected to the fuel tank through a fuel tank liquid inlet pipe, and a fuel tank liquid inlet valve is provided on the fuel tank liquid inlet pipe. The fuel tank liquid inlet valve is connected to the fuel tank boost control device and is used to open and close the fuel tank liquid inlet pipe.

5. The rocket tank pressurization internal pressure blasting process system according to claim 4 is characterized in that: An oxygen tank liquid inlet valve is provided on the oxygen tank liquid inlet pipeline, and the oxygen tank liquid inlet valve is connected to the oxygen tank boost control device for opening and closing the oxygen tank liquid inlet pipeline; a fuel tank liquid inlet valve is provided on the fuel tank liquid inlet pipeline, and the fuel tank liquid inlet valve is connected to the fuel tank boost control device for opening and closing the fuel tank liquid inlet pipeline.

6. The rocket tank pressurization internal pressure blasting process system according to claim 1 is characterized in that: The nitrogen boosting distribution plate is connected to the oxygen tank water supply pressure vessel through a first boosting pipe, and the first boosting pipe is provided with an air supply valve and a first boosting valve; the nitrogen boosting distribution plate is connected to the fuel tank water supply pressure vessel through the first boosting pipe and the second boosting pipe, and the second boosting pipe is provided with a second boosting valve.

7. The rocket tank pressurization internal pressure blasting process system according to claim 6 is characterized in that: A first boosting orifice plate is arranged on the first boosting pipeline between the first boosting valve and the air inlet of the oxygen tank water supply pressure vessel; a second boosting orifice plate is arranged on the second boosting pipeline between the second boosting valve and the air inlet of the fuel tank water supply pressure vessel.

8. The rocket tank pressurization internal pressure blasting process system according to claim 1 is characterized in that: The oxygen tank water supply pressure vessel is connected to a first liquid level gauge, which is connected to the water injection and replenishment control device and is used to remotely monitor the water level in the oxygen tank water supply pressure vessel; The fuel tank water supply pressure vessel is connected to a second liquid level gauge, which is connected to the water injection and replenishment control device and is used to remotely monitor the water level in the fuel tank water supply pressure vessel; The oxygen tank is connected to a third liquid level gauge, which is connected to the water injection and replenishment control device and is used to remotely monitor the water level in the oxygen tank; The fuel tank is connected to a fourth liquid level gauge, which is connected to a water injection and replenishment control device and is used for remotely monitoring the water level in the fuel tank.

9. The rocket tank pressurization internal pressure blasting process system according to claim 1, characterized in that: The oxygen box water supply pressure vessel is connected to a first pressure sensor, and the first pressure sensor is connected to the oxygen box pressurization control device for remotely monitoring the pressure of the oxygen box water supply pressure vessel during pressurization; The fuel tank water supply pressure vessel is connected to a second pressure sensor, and the second pressure sensor is connected to the fuel tank pressurization control device for remotely monitoring the pressure of the fuel tank water supply pressure vessel during pressurization; The oxygen box is connected to a third pressure sensor, which is connected to the oxygen box pressurization control device and is used to remotely monitor the pressure value of the oxygen box; The fuel tank is connected to a fourth pressure sensor, and the fourth pressure sensor is connected to the fuel tank pressurization control device for remotely monitoring the pressure value of the fuel tank.

10. The rocket tank pressurization internal pressure blasting process system according to claim 1, characterized in that: The oxygen box water supply pressure vessel is connected to a first exhaust pipeline, a first exhaust valve is provided on the first exhaust pipeline, and the first exhaust valve is connected to the oxygen box pressurization control device for opening and closing the first exhaust pipeline; The fuel tank water supply pressure vessel is connected to a second exhaust pipe, a second exhaust pipe is provided with a second exhaust valve, and the second exhaust valve is connected to the fuel tank boost control device for opening and closing the second exhaust pipe.

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