Gas cylinder inflation system for carrier rocket

Abstract

The utility model provides a gas cylinder inflation system for a carrier rocket, which is characterized by comprising a first one-way stop valve (1), a first gas cylinder (2), a second one-way stop valve (3) and a second gas cylinder (4), the first gas cylinder (2) is connected with an outlet of the first one-way stop valve (1) through a pipeline, and the second gas cylinder (4) is connected with an outlet of the second one-way stop valve (3) through a pipeline. The second gas cylinder (4) is communicated with the second one-way stop valve (3) and an inlet of the first one-way stop valve (1) through pipelines, a control port of the first one-way stop valve (1) and a control port of the second one-way stop valve (3) are connected through pipelines and are connected with ground control gas, and an inlet of the second one-way stop valve (3) is connected with ground inflation. In the working process of the rocket, under the normal state, the two sets of gas cylinders independently pressurize different storage boxes, and when the pressure is abnormally reduced, the second gas cylinder (4) can automatically supplement gas to the first gas cylinder (2) so as to improve the redundancy of the pressurization system. A ground control gas circuit and a gas cylinder inflation circuit are reduced, and a ground gas supply and distribution system and the like are optimized.

Description

Technical Field

[0001] The utility model relates to a liquid rocket pressurization and delivery system, in particular to a gas cylinder inflation system for a launch vehicle. Background Art

[0002] Liquid launch vehicles often use high-pressure gas cylinders to store helium for pressurizing the tank during flight, and the gas cylinders need to be inflated before the rocket is launched. The gas cylinder inflation generally adopts a solution of designing a set of gas cylinders and a set of inflation systems. When there are two or more sets of gas cylinders for use, multiple inflation systems are required. The rocket needs to add inflation valves and pipelines, which increases the weight of the structure. The launch site also needs to be equipped with multiple inflation systems, making the ground gas supply system more complicated. Utility Model Content

[0003] The utility model aims at the above-mentioned deficiencies in the prior art and provides a gas cylinder inflation system for a launch vehicle, so as to optimize the problem of the pipeline system being responsible for inflating multiple sets of gas cylinders.

[0004] To achieve the above-mentioned purpose, the utility model provides a gas cylinder inflation system for a launch vehicle, characterized in that it includes a first one-way stop valve 1, a first gas cylinder 2, a second one-way stop valve 3, and a second gas cylinder 4, the first gas cylinder 2 is connected to the outlet of the first one-way stop valve 1 through a pipeline, the second gas cylinder 4 is connected to the second one-way stop valve 3 and the inlet of the first one-way stop valve 1 through a pipeline, the control port of the first one-way stop valve 1 and the control port of the second one-way stop valve 3 are connected through a pipeline and connected to the ground control gas, and the inlet of the second one-way stop valve 3 is connected to the ground inflation.

[0005] The beneficial effect of the utility model is that, by adopting the above-mentioned gas cylinder inflation system, under normal conditions during the operation of the rocket, two sets of gas cylinders independently pressurize different tanks, and when the pressure of the first gas cylinder 2 is abnormally reduced, the second gas cylinder 4 can automatically replenish gas to the first gas cylinder 2 to improve the redundancy of the pressurization system. The ground control gas circuit and the gas cylinder inflation circuit are reduced, and the ground gas supply and distribution system is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of the inflation state of a gas cylinder inflation system provided in a preferred embodiment of the utility model;

[0007] Figure 2 A state diagram of the gas cylinder inflation system after inflation is completed provided by the preferred embodiment of the utility model;

[0008] Figure 3 A schematic diagram of a gas cylinder inflation system provided by a preferred embodiment of the utility model, in which the second gas cylinder inflates the first gas cylinder;

[0009] Figure 4 This is a schematic diagram of the currently commonly used gas cylinder inflation system. DETAILED DESCRIPTION

[0010] In order to better illustrate the present invention, a preferred embodiment is described in detail with reference to the accompanying drawings, as follows:

[0011] A gas cylinder inflation system for a launch vehicle of the present invention is characterized in that it comprises a first one-way stop valve 1, a first gas cylinder 2, a second one-way stop valve 3, and a second gas cylinder 4, the first gas cylinder 2 is connected to the outlet of the first one-way stop valve 1 through a pipeline, the second gas cylinder 4 is connected to the second one-way stop valve 3 and the inlet of the first one-way stop valve 1 through a pipeline, the control port of the first one-way stop valve 1 and the control port of the second one-way stop valve 3 are connected through a pipeline and connected to ground control gas, and the inlet of the second one-way stop valve 3 is connected to ground inflation.

[0012] Figure 1 The diagram of the gas cylinder inflation system provided in the preferred embodiment of the utility model is as follows: Figure 1 As shown, ground control air is passed to the first one-way stop valve 1 and the second one-way stop valve 3 at the same time, the two valves are opened at the same time, the inlets and outlets of the two valves are connected, and the first gas cylinder 2 and the second gas cylinder 4 are inflated simultaneously through the ground inflation pipeline.

[0013] A first one-way stop valve 1 is designed between the first gas cylinder 2 and the second gas cylinder 4. When the ground control gas is passed through the first one-way stop valve 1, its inlet and outlet are connected, and the first gas cylinder 2 is connected to the second gas cylinder 4. When inflating, the first gas cylinder 2 and the second gas cylinder 4 are inflated at the same time. During the operation of the rocket, the inlet and outlet of the first one-way stop valve 1 are cut off. Under the pressure difference between the second gas cylinder 4 and the first gas cylinder 2, the first one-way stop valve 1 can also be opened, and the second gas cylinder 4 can replenish gas to the first gas cylinder 2.

[0014] Figure 2 This is a diagram of the state of the gas cylinder inflation system after inflation is completed provided by the preferred embodiment of the utility model. Figure 2 As shown, the ground control gas is depleted, the first one-way stop valve 1 and the second one-way stop valve 3 are closed at the same time, and the inlet and outlet of the two valves are cut off. The first gas cylinder 2 independently pressurizes the first box, and the second gas cylinder 4 independently pressurizes the second box.

[0015] Figure 3 Schematic diagram of the gas cylinder inflation system provided by the preferred embodiment of the utility model, in which the second gas cylinder inflates the first gas cylinder. Under normal circumstances, the pressure PB of the second gas cylinder 4 is less than the pressure PA of the first gas cylinder 2, and the gas in the first gas cylinder 2 cannot enter the second gas cylinder 4, and the gas in the second gas cylinder 4 cannot enter the first gas cylinder 2. Figure 3As shown in FIG. 1 , when the first gas cylinder 2 has a fault such as leakage, the pressure PA of the first gas cylinder 2 is less than the pressure PB of the second gas cylinder 4. Under the pressure difference of PB-PA, the first one-way stop valve 1 is pushed open, and the second gas cylinder 4 enters the first gas cylinder 2 to replenish the first gas cylinder 2, thereby ensuring the gas supply of the first gas cylinder 2 to improve the redundancy of the booster system. The original process of the second gas cylinder 4 replenishing gas to the first gas cylinder 2 is as follows: Figure 3 shown.

[0016] Figure 4 This is a schematic diagram of the commonly used gas cylinder filling system. Figure 4 Compared with the scheme of the present invention, the gas cylinder inflation system provided by the utility model can combine the inflation systems of two sets of gas cylinders into one set, which can reduce one ground control gas circuit and one gas cylinder inflation circuit, thereby optimizing the ground gas supply and distribution system.

[0017] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any modification or replacement of the utility model made by any technician in the field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gas cylinder inflation system for a launch vehicle, characterized in that: The invention comprises a first one-way stop valve (1), a first gas cylinder (2), a second one-way stop valve (3), and a second gas cylinder (4); the first gas cylinder (2) is connected to the outlet of the first one-way stop valve (1) through a pipeline; the second gas cylinder (4) is connected to the second one-way stop valve (3) and the inlet of the first one-way stop valve (1) through a pipeline; the control port of the first one-way stop valve (1) and the control port of the second one-way stop valve (3) are connected to the ground control gas through a pipeline; and the inlet of the second one-way stop valve (3) is connected to the ground inflation gas.

2. The gas cylinder inflation system for a launch vehicle according to claim 1, characterized in that: A first one-way stop valve (1) is arranged between the first gas cylinder (2) and the second gas cylinder (4); when the first one-way stop valve (1) is connected to ground control gas, its inlet and outlet are connected, and the first gas cylinder (2) is connected to the second gas cylinder (4); when inflating, the first gas cylinder (2) and the second gas cylinder (4) are inflated at the same time; during the operation of the rocket, the inlet and outlet of the first one-way stop valve (1) are cut off, and the first one-way stop valve (1) is opened under the action of the pressure difference between the second gas cylinder (4) and the first gas cylinder (2), and the second gas cylinder (4) replenishes gas to the first gas cylinder (2).

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