CN111664024A - Hydrogen peroxide kerosene self-pressurization power system - Google Patents

Abstract

The invention discloses a hydrogen peroxide kerosene self-pressurization power system, comprising a thrust chamber for igniting and burning to generate thrust, a hydrogen peroxide storage tank for supplying hydrogen peroxide to the thrust chamber, and a hydrogen peroxide storage tank for supplying kerosene to the thrust chamber The kerosene storage tank, the gas generator used to inject gas into the hydrogen peroxide storage tank and the kerosene storage tank, the hydrogen peroxide storage tank is also used to provide hydrogen peroxide to the gas generator; the hydrogen peroxide storage tank is used for gas generation The hydrogen peroxide is supplied to the gas generator, and the hydrogen peroxide is burned in the gas generator to generate fuel gas, which is injected into the hydrogen peroxide storage tank and the kerosene storage tank to pressurize the hydrogen peroxide storage tank and the kerosene storage tank, and then the hydrogen peroxide storage tank and the kerosene storage tank are pressurized. The hydrogen peroxide and kerosene in the kerosene storage tank are injected into the thrust chamber for ignition and combustion to provide driving force for the engine; the system has a high degree of integration, which reduces the system quality and improves the safety and maintainability of the hydrogen peroxide kerosene power system.

Description

A hydrogen peroxide kerosene self-boosting power system

technical field

The invention belongs to the field of pump pressure engines, in particular to a hydrogen peroxide kerosene self-boosting power system.

Background technique

The liquid rocket engine is an important foundation of the current launch vehicle, and it is of great significance for space launch and deep space exploration missions. In order to further reduce the launch cost and increase the launch frequency, new requirements are put forward for the reuse and convenience of rocket engines; hydrogen peroxide kerosene, as a commonly used propellant combination, has both normal temperature storage and non-toxic and pollution-free properties. It has the characteristics of high density specific impulse and easy storage, which can bring convenience in storage and refueling, and greatly reduce the launch preparation time. Therefore, the research on hydrogen peroxide kerosene power system has received extensive attention.

For the power system with small thrust level or small total impulse, the constant pressure extrusion scheme is generally adopted, that is, the constant pressure extrusion of the liquid propellant is realized through the combination of gas cylinder, isolation valve, pressure reducing valve, etc., so as to maintain the The function of the stable operation of the power system. The constant pressure extrusion scheme isolates the high-pressure inert gas in the gas cylinder through the isolation valve before the system works. When the power system needs to work, the isolation valve is opened, and the high-pressure gas is under the action of the pressure reducing valve. , to maintain a relatively stable outlet pressure, this supercharged power system is characterized by mature technology and reliable work.

However, on the other hand, the constant pressure extrusion power system solution needs to carry high-pressure gas cylinders. During the storage process of high-pressure gas cylinders, the safety and use and maintenance are poor, which brings certain dangers to operators and increases the use and maintenance. At the same time, due to the normal temperature gas pressurization, the pressurization efficiency is low, resulting in a heavy system structure, thereby reducing the payload mass of the aircraft.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a hydrogen peroxide kerosene self-pressurizing power system in order to overcome the existing technical defects. Hydrogen peroxide, one of the propellants, is used as the pressurizing medium, and the system integration degree is high, and the hydrogen peroxide kerosene is improved. The safety of the power system reduces the cost of use and maintenance, and at the same time optimizes the quality of the system structure.

In order to solve the above-mentioned technical problems, the present invention provides a hydrogen peroxide kerosene self-boosting power system, comprising:

Thrust chamber for ignition and combustion to generate thrust;

a hydrogen peroxide tank for supplying hydrogen peroxide to the thrust chamber;

a kerosene tank for supplying kerosene to the thrust chamber;

a gas generator for injecting fuel gas into the hydrogen peroxide tank and the kerosene tank;

The hydrogen peroxide tank is also used to provide hydrogen peroxide to the gas generator.

Further, the outlet end of the hydrogen peroxide storage tank is connected to the gas generator through the first hydrogen peroxide pipeline, and the first hydrogen peroxide pipeline is sequentially provided with the first hydrogen peroxide along the flow direction of the hydrogen peroxide. A control valve and electric pump.

Further, a gas outlet pipeline for communicating with the hydrogen peroxide storage tank and the kerosene storage tank is connected to the outlet of the gas generator, and a pressure sensor is arranged on the gas outlet pipeline.

Further, a controller is also included, and the electric pump and the pressure sensor are respectively electrically connected to the controller.

Further, the gas outlet pipeline is provided with a first gas pipeline and a second gas pipeline in parallel, and the first gas pipeline and the second gas pipeline are respectively connected with the hydrogen peroxide storage tank and the kerosene storage tank. connect.

Further, a first check valve and a second check valve are respectively provided on the first gas pipeline and the second gas pipeline.

Further, the hydrogen peroxide storage tank is connected to the thrust chamber through a second hydrogen peroxide pipeline, and a second control valve is provided on the second hydrogen peroxide pipeline.

Further, a discharge pipeline is arranged in parallel on the second hydrogen peroxide pipeline, and a third control valve is arranged on the discharge pipeline.

Further, the kerosene storage tank is connected to the thrust chamber through a kerosene pipeline, and a kerosene control valve is provided on the kerosene pipeline.

Further, both the hydrogen peroxide storage tank and the kerosene storage tank are integrated with a filling and draining valve core.

The present invention has the following beneficial effects:

In the invention, the hydrogen peroxide storage tank is used to provide hydrogen peroxide in the thrust chamber and the gas generator, and the hydrogen peroxide is burned in the gas generator to generate gas as a pressurized medium and injected into the hydrogen peroxide storage tank and the kerosene storage tank, so as to The hydrogen peroxide storage tank and the kerosene storage tank are pressurized, and then the hydrogen peroxide and kerosene in the hydrogen peroxide storage tank and the kerosene storage tank are injected into the thrust chamber to ignite and burn to provide driving force for the engine. The total mass of the system structure; at the same time, hydrogen peroxide, one of the propellants, is used as its own pressurized medium, which has high system integration, optimizes the system composition, cancels the high-pressure gas cylinder, reduces the system mass, and avoids the high-pressure gas cylinder belt belt. The operational risks and maintenance costs of the hydrogen peroxide have improved the safety of the hydrogen peroxide kerosene power system, and at the same time, the use and maintenance of the system has been improved.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of this application, and do not constitute an improper limitation of the present invention. In the accompanying drawings:

1 is a schematic diagram of a hydrogen peroxide kerosene self-boosting power system in an embodiment;

Detailed ways

In order to more fully understand the technical content of the present invention, the present invention will be further introduced and described below with reference to the accompanying drawings and specific embodiments.

Example

As shown in FIG. 1 , a hydrogen peroxide kerosene self-pressurization power system shown in this embodiment includes a thrust chamber 1 for igniting and burning to provide driving force for an engine, a thrust chamber 1 for providing hydrogen peroxide to the thrust chamber 1 Hydrogen peroxide storage tank 2, kerosene storage tank 3 for supplying kerosene to thrust chamber 1, gas generator 4 for injecting gas into hydrogen peroxide storage tank 2 and kerosene storage tank 3, hydrogen peroxide storage tank 2 It is also used to provide hydrogen peroxide into the gas generator 4, and a filling and draining valve core (not shown in the figure) is integrated on the hydrogen peroxide storage tank 2 and the kerosene storage tank 3; hydrogen peroxide and kerosene As a propellant, it can be ignited and burned in the thrust chamber 1 to provide driving force for the engine. At the same time, the hydrogen peroxide in the hydrogen peroxide storage tank 2 can also enter the gas generator 4, and the hydrogen peroxide, which is one of the propellants, enters the fuel gas. The combustion in the generator 4 produces gas, and the gas can enter the hydrogen peroxide storage tank 2 and the kerosene storage tank 3 as a pressurized medium to pressurize the hydrogen peroxide storage tank 2 and the kerosene storage tank 3, thereby making the hydrogen peroxide storage tank 2 and the kerosene storage tank 3 pressurized. The kerosene tank 3 injects hydrogen peroxide and kerosene into the thrust chamber 1, and the hydrogen peroxide and kerosene are ignited and burned in the thrust chamber 1 to provide driving force for the engine.

Specifically, the hydrogen peroxide storage tank 2 is connected to the gas generator 4 through the first hydrogen peroxide pipeline 21, and the first hydrogen peroxide pipeline 21 is sequentially provided with first isolation valves along the flow direction of the hydrogen peroxide 22. The first control valve 23 and the electric pump 24, the first isolation valve 22 and the first control valve 23 are used to control whether hydrogen peroxide is supplied into the gas generator 4, the first isolation valve 22 is a one-time operation, the first control The valve 23 can work multiple times, and the electric pump 24 is used to provide power for the injection of hydrogen oxide into the gas generator 4; when the power system is not working, the first isolation valve 22 and the first control valve 23 are in a closed state, and the power system is ready to work At the time, the hydrogen peroxide in the hydrogen peroxide storage tank 2 can open the first isolation valve 22 and flow to the front end of the first control valve 23, then open the first control valve 23 and open the electric pump 24, and the hydrogen peroxide flows through the first control valve 23. An isolation valve 22 and a first control valve 23 are connected to an electric pump 24. The electric pump 24 provides power for the hydrogen peroxide and injects the hydrogen peroxide into the gas generator 4 for combustion to generate gas.

Specifically, a gas outlet pipeline 41 is connected to the outlet of the gas generator 4, and a pressure sensor 42 is arranged on the gas outlet pipeline 41. The pressure sensor 42 can measure the pressure value in the gas outlet pipeline 41, and also Including the controller 43, the electric pump 24 and the pressure sensor 42 are respectively electrically connected to the controller 43, the pressure sensor 42 transmits the measured pressure value in the gas outlet pipeline 41 to the controller 43, and the controller 43 The power of the electric pump 24 is controlled by the pressure value in the pipeline 41. When the pressure value in the gas outlet pipeline 41 is too large, the controller 43 can control to reduce the running power of the electric pump 24, so that the gas injected into the gas generator 4 The hydrogen peroxide is reduced, thereby reducing the gas generated by combustion to reduce the pressure value. When the pressure value in the gas outlet pipeline 41 is too small, the controller 43 can control to increase the operating power of the electric pump 24, so that more hydrogen peroxide is injected The combustion in the gas generator 4 generates more gas to increase the pressure value; when the power system needs to adjust the output thrust in a small range, the speed of the electric pump 24 can be adjusted by the controller 43 to achieve the purpose of adjusting the boost pressure.

Specifically, a first gas pipeline 44 and a second gas pipeline 45 are arranged in parallel on the gas outlet pipeline 41, and the first gas pipeline 44 and the second gas pipeline 45 are connected to the hydrogen peroxide storage tank 2 and the kerosene respectively. The tank 3 is connected, and the first one-way valve 46 and the second one-way valve 47 are respectively provided on the first gas pipeline 44 and the second gas pipeline 45; the hydrogen peroxide is burned in the gas generator 4 to generate gas into the In the gas outlet pipeline 41, and then at the end of the gas outlet pipeline 41, the gas flows into the first gas pipeline 44 and the second gas pipeline 45 in two separate paths, and the gas flows through the first gas pipeline 44 in the first gas pipeline 44. After entering the hydrogen peroxide storage tank 2 after the valve 46, pressurize the hydrogen peroxide storage tank 2, so that the hydrogen peroxide in the hydrogen peroxide storage tank 2 is injected into the thrust chamber 1, and the gas flows in the second gas pipeline 45. After passing through the second check valve 47, it enters the kerosene storage tank 3 to pressurize the kerosene storage tank 3, so that the kerosene in the kerosene storage tank 3 is injected into the thrust chamber 1, and the hydrogen peroxide and kerosene are ignited and burned in the thrust chamber 1 to form an engine. Provide driving force.

Specifically, a safety valve 48 is also provided on the gas outlet pipeline 41 in parallel with the first gas pipeline 44 and the second gas pipeline 45. Since the gas outlet pipeline 41 is also connected in parallel with the first gas pipeline 44 and the second gas pipeline 45, respectively. The second gas pipeline 45, and the first gas pipeline 44 and the second gas pipeline 45 are respectively connected with the hydrogen peroxide storage tank 2 and the kerosene storage tank 3, so the gas outlet pipeline 41 measured by the pressure sensor 42 is in the gas outlet pipeline 41. The pressure value is also the pressure value of the hydrogen peroxide storage tank 2 and the kerosene storage tank 3; when the pressure value measured by the pressure sensor 42 is too large, the controller 43 controls to reduce the operating power of the electric pump 24, so as to inject the gas generator 4 The hydrogen peroxide in the interior is reduced, and the gas generated by combustion is reduced to reduce the pressure value. A process is required. The safety valve 48 is connected in parallel with the first gas pipeline 44 and the second gas pipeline 45, which can be connected to the hydrogen peroxide tank 2 and the kerosene. When the pressure value in the storage tank 3 is too large, it is immediately opened to release excess gas, thereby ensuring the safety of the hydrogen peroxide storage tank 2 and the kerosene storage tank 3.

Specifically, the hydrogen peroxide tank 2 is connected to the thrust chamber 1 through a second hydrogen peroxide pipeline 25, and a second isolation valve 26 is arranged on the second hydrogen peroxide pipeline 25 along the flow direction of the hydrogen peroxide. and the second control valve 27, the second isolation valve 26 and the second control valve 27 are used to control whether hydrogen peroxide is supplied into the thrust chamber 1, the second isolation valve 26 is a one-time operation, and the second control valve 27 can be operated multiple times , when the gas generated by the combustion of hydrogen peroxide in the gas generator 4 enters the hydrogen peroxide storage tank 2 through the gas outlet pipeline 41 and the first gas pipeline 44, the pressure in the hydrogen peroxide storage tank 2 increases, so that The hydrogen peroxide in the hydrogen peroxide storage tank 2 opens the second isolation valve 26 and flows to the inlet end of the second control valve 27. After opening the second control valve 27, the hydrogen peroxide in the hydrogen peroxide storage tank 2 can The hydrogen peroxide flows into the thrust chamber 1 through the second hydrogen peroxide pipeline 25 , and the hydrogen peroxide ignites and burns in the thrust chamber 1 to provide driving force for the engine.

Specifically, a discharge pipeline 28 is arranged in parallel on the second hydrogen peroxide pipeline 25, and a third control valve 29 is arranged on the discharge pipeline 28. The third control valve 29 is used to control the inside of the hydrogen peroxide storage tank 2. The emergency discharge of the hydrogen peroxide, under the normal operation of the power system, the third control valve 29 is closed, when the pressure value of the hydrogen peroxide tank 2 is abnormal, the third control valve 29 is opened to make the hydrogen peroxide tank Emergency discharge of hydrogen peroxide in 2, so that the pressure value in hydrogen peroxide tank 2 tends to be normal.

Specifically, the kerosene tank 3 is connected to the thrust chamber 1 through a kerosene pipeline 31, and a kerosene isolation valve 32 and a kerosene control valve 33 are sequentially provided on the kerosene pipeline 31 along the direction of kerosene flow. The valve 33 is used to control whether the hydrogen peroxide is supplied into the thrust chamber 1, the kerosene isolation valve 32 is a one-time operation, and the kerosene control valve 33 can operate multiple times. After the pipeline 41 and the second gas pipeline 45 enter the kerosene tank 3, the pressure in the kerosene tank 3 increases, so that the kerosene in the kerosene tank 3 flows through the kerosene isolation valve 32 and flows to the inlet end of the kerosene control valve 33 After opening the kerosene control valve 33, the kerosene in the kerosene tank 3 can flow into the thrust chamber 1 through the kerosene pipeline 31, and the kerosene ignites and burns in the thrust chamber 1 to provide driving force for the engine.

In this embodiment, in the preparation stage of the power system, the hydrogen peroxide storage tank 2 is pre-filled with a certain pressure gas, and the first isolation valve 22, the second isolation valve 26 and the kerosene isolation valve 32 are opened in sequence, and the hydrogen peroxide The hydrogen peroxide in the storage tank 2 flows to the first control valve 23 and the second control valve 27 through the first isolation valve 22 and the second isolation valve 26 respectively under the action of the gas pressure in the hydrogen peroxide storage tank 2. At the inlet end of the kerosene tank 3, the kerosene in the kerosene storage tank 3 flushes the kerosene isolation valve 32 under the action of gravity, and flows to the inlet end of the kerosene control valve 33.

Before the power system starts to work, the first control valve 23 is opened, and the hydrogen peroxide is filled into the electric pump 24. Under the action of the controller 43, the electric pump 24 starts to work, and the hydrogen peroxide in the first hydrogen peroxide pipeline 21 is discharged. Under the action of the pressure, the hydrogen peroxide enters the gas generator 4, generates high-temperature gas through catalytic combustion, the gas enters the gas outlet pipeline 41, and then divides into two paths at the end of the gas outlet pipeline 41. The gas flows into the first gas pipeline 44 and the second gas pipeline 45 respectively, and the gas flows through the first check valve 46 in the first gas pipeline 44 and then enters the hydrogen peroxide storage tank 2 as the hydrogen peroxide storage tank 2 Pressurization, the gas flows through the second check valve 47 in the second gas pipeline 45 and then enters the kerosene tank 3 to pressurize the kerosene tank 3, and the gas filled into the hydrogen peroxide tank 2 is further squeezed through The hydrogen peroxide in the hydrogen peroxide storage tank 2, the hydrogen peroxide passes through the first isolation valve 22, the first control valve 23, the electric pump 24 and the gas generator 4 in turn to generate high temperature and high pressure gas, and further pressurize the hydrogen peroxide storage tank 2, follow this cycle; when the pressure value in the hydrogen peroxide storage tank 2 and the kerosene storage tank 3 reaches the rated pressure value, that is, when the corresponding pressure value is displayed by the pressure sensor 42, then the controller 43 can send the electric pump 24 The signal to stop working, the electric pump 24 stops working, and the power system is in a standby state at this time.

When the power system starts to work, the second control valve 27 and the kerosene control valve 33 are opened in sequence according to a certain sequence, so that the hydrogen peroxide in the hydrogen peroxide tank 2 flows through the second isolation valve 26 and the second control valve 27 to inject thrust In the chamber 1, the kerosene in the kerosene storage tank 3 is injected into the thrust chamber 1 through the kerosene isolation valve 32 and the kerosene control valve 33, and the hydrogen peroxide and kerosene are ignited and burned in the thrust chamber 1 to provide driving force for the engine, and the thrust chamber produces Rated thrust.

When the power system does not need thrust output, close the second control valve 27 and the kerosene control valve 33 in sequence according to a certain sequence; when the power system does not need thrust output for a long time, close the first control valve 23 to completely cut off the hydrogen peroxide Lines that enter the electric pump 24 and the gas generator 4 .

The above are only embodiments of the present invention, and do not limit the scope of protection of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are included in the present invention. within the scope of patent protection.

Claims (10)

1. a hydrogen peroxide kerosene self-supercharging power system, is characterized in that, comprises: Thrust chamber for ignition and combustion to generate thrust; a hydrogen peroxide tank for supplying hydrogen peroxide to the thrust chamber; a kerosene tank for supplying kerosene to the thrust chamber; a gas generator for injecting fuel gas into the hydrogen peroxide tank and the kerosene tank; The hydrogen peroxide tank is also used to provide hydrogen peroxide to the gas generator. 2. The hydrogen peroxide kerosene self-pressurizing power system as claimed in claim 1, wherein the outlet end of the hydrogen peroxide storage tank is connected with the gas generator through the first hydrogen peroxide pipeline, so that the A first control valve and an electric pump are sequentially arranged on the first hydrogen peroxide pipeline along the flow direction of the hydrogen peroxide. 3. The hydrogen peroxide kerosene self-pressurizing power system as claimed in claim 2, wherein the outlet of the gas generator is connected with a fuel gas for communicating with the hydrogen peroxide storage tank and the kerosene storage tank. The outlet pipeline is provided with a pressure sensor on the gas outlet pipeline. 4 . The hydrogen peroxide kerosene self-boosting power system according to claim 3 , further comprising a controller, and the electric pump and the pressure sensor are respectively electrically connected to the controller. 5 . 5. The hydrogen peroxide kerosene self-pressurizing power system according to claim 4, wherein a first gas pipeline and a second gas pipeline are arranged in parallel on the gas outlet pipeline, and the first gas pipeline The road and the second gas pipeline are respectively connected with the hydrogen peroxide storage tank and the kerosene storage tank. 6. The hydrogen peroxide kerosene self-boosting power system according to claim 5, wherein the first gas pipeline and the second gas pipeline are respectively provided with a first one-way valve and a second one-way valve . 7. The hydrogen peroxide kerosene self-pressurizing power system according to any one of claims 1 to 6, wherein the hydrogen peroxide storage tank is connected to the thrust chamber through a second hydrogen peroxide pipeline, A second control valve is provided on the second hydrogen peroxide pipeline. 8. The hydrogen peroxide kerosene self-boosting power system according to claim 7, wherein a discharge pipeline is arranged in parallel on the second hydrogen peroxide pipeline, and a third control valve is arranged on the discharge pipeline . 9 . The hydrogen peroxide kerosene self-pressurizing power system according to claim 8 , wherein the kerosene storage tank is connected to the thrust chamber through a kerosene pipeline, and a kerosene control valve is provided on the kerosene pipeline. 10 . 10 . The hydrogen peroxide kerosene self-pressurizing power system according to claim 1 , wherein the hydrogen peroxide storage tank and the kerosene storage tank are integrated with a filling and draining valve core. 11 .

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