A powder rocket engine supply source pressure self-adapting device

Abstract

The application discloses a powder rocket engine supply gas source pressure self-adaptive device, which comprises a high-pressure gas cylinder, an air inlet of which is connected with a gas source pipeline; an air outlet of the high-pressure gas cylinder is connected with an air outlet pipe, an outlet end of the air outlet pipe is connected with two parallelly connected third pipelines and fourth pipelines, an air back pressure ball valve is connected on the third pipeline, the air back pressure ball valve is connected with a signal conversion control feedback module; the air outlet pipe is connected with an intelligent transmission controller, the intelligent transmission controller is also connected with the signal conversion control feedback module, and the signal conversion control feedback module is also connected with a remote signal control monitoring device wire. The pressure self-adaptive device realizes self-adaptive adjustment of the powder engine supply gas source pressure, and ensures self-adaptive and stable adjustment of the cavity pressure when the gas generated by the gas generator enters the powder engine powder supply system.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of powder rocket engine gas storage cavity pressure regulation, and particularly relates to a powder rocket engine gas source pressure self-adaptive device. BACKGROUND

[0002] The fuel of the powder rocket engine is metal powder propellant, the storage form of the powder propellant in the engine is solid particles, and the delivery state is gas-solid two-phase flow. The main task of the powder rocket engine propellant supply system is to realize long-term storage and stable delivery of the powder propellant, and the supply system mainly consists of powder propellant, powder storage tank, piston and gas source supply device and the like.

[0003] In the powder rocket engine powder fuel supply system, a certain pressure gas source is needed to provide a certain pressure for the driving cavity and the fluidization cavity of the powder engine, and the pressure difference is used to adjust the piston movement speed to realize powder supply. At present, in the powder supply system experiment process, the gas source is divided into two categories of high-pressure gas cylinder and gas generator according to different application scenarios.

[0004] In the process of ground test of the powder rocket engine, the high-pressure gas cylinder is generally used as the gas source of the powder propellant system, and the pressure reducing valve is installed on the high-pressure gas cylinder to control the output gas flow pressure. However, in the working process of the powder engine rocket system, the gas carried by the high-pressure gas cylinder has small mass and fast consumption, and the mass of the high-pressure gas cylinder itself is large, which brings more negative mass to the whole rocket engine system.

[0005] When the gas generator is used as the gas source, the gas generated by the gas generator needs a gradual pressure process, and can be used as the gas source in the working process of the powder engine after reaching the working pressure. In the gradual pressure process of the gas generator, the generated gas source pressure will fluctuate, and the burning rate of the propellant column in the gas generator is related to the pressure. The fluctuation of the gas source pressure will cause the fluctuation of the burning rate of the propellant column. The coupling process between the change of the burning rate and the pressure causes the gas source pressure to be always in an unstable state, and it is difficult to control, which brings many problems to the working process of the powder engine system. SUMMARY

[0006] The purpose of the present application is to provide a powder rocket engine gas source pressure self-adaptive device, which realizes self-adaptive regulation of the gas source pressure of the powder engine, and ensures self-adaptive and stable regulation of the cavity pressure when the gas generated by the gas generator enters the powder supply system of the powder engine.

[0007] The present application adopts the following technical scheme: a powder rocket engine gas source pressure self-adaptive device, comprising:

[0008] The high-pressure gas cylinder is connected with a gas source pipeline at an air inlet thereof, and an air outlet of the high-pressure gas cylinder is connected with an air outlet pipe, an outlet end of the air outlet pipe is connected with two parallel third and fourth pipelines, the third pipeline is a gas discharge pipeline, an air back pressure ball valve is connected to the third pipeline, and the air back pressure ball valve is connected with a signal conversion control feedback module; the fourth pipeline is used for being connected with a powder engine powder supply system;

[0009] The air outlet pipe is connected with an intelligent transmission controller, the intelligent transmission controller is further connected with the signal conversion control feedback module, and the signal conversion control feedback module is further connected with a remote signal control monitoring device wire;

[0010] The intelligent transmission controller is used for outputting a signal of closing or opening to the air back pressure ball valve; the air back pressure ball valve is used for closing or opening the air outlet pipe, so that the high-pressure gas cylinder is closed when the pressure is lower than a set pressure, and the high-pressure gas cylinder is connected with the gas source; the high-pressure gas cylinder is opened when the pressure is higher than the set pressure, and the excess gas is discharged through the air outlet pipe and the air back pressure ball valve.

[0011] Further, a first electromagnetic valve is arranged on the fourth pipeline, from an outlet of the first electromagnetic valve, two parallel pipelines are divided, one of the pipelines is connected with a front end cavity of the powder engine powder supply system in communication, and a second electromagnetic valve is arranged on the pipeline; the other pipeline is connected with a rear end cavity of the powder engine powder supply system in communication, and a third electromagnetic valve is arranged on the pipeline.

[0012] Further, a power negative pole interface and a power positive pole interface of the intelligent transmission controller are connected with a power positive pole port and a power negative pole port of the signal conversion control module in correspondence;

[0013] An interface two of a first relay of the intelligent transmission controller is connected with an interface of a second relay of the signal conversion control module;

[0014] A current signal output port negative pole and a current signal output port positive pole of the intelligent transmission controller are connected with a current signal input port negative pole and a current signal input port positive pole in the signal conversion control module in correspondence;

[0015] The power negative pole interface of the intelligent transmission controller is further connected with a control signal receiving end one of the air back pressure ball valve;

[0016] The positive pole port and the negative pole port of the second relay of the signal conversion control module are connected with positive and negative ends of a control line of the remote signal control monitoring device in correspondence;

[0017] The negative pole port of the second relay is connected with the control signal receiving end one of the air back pressure ball valve;

[0018] The signal transmission port of the second relay is connected with the control signal receiving end two of the air back pressure ball valve.

[0019] The application also discloses a control method of the powder rocket engine supply source pressure self-adaptive device.

[0020] When the pressure in the high-pressure gas cylinder is greater than the upper limit of the set pressure, the intelligent transmission controller outputs a control signal to the air back pressure ball valve through the signal conversion control feedback module to control the air back pressure ball valve to open, and the gas in the high-pressure gas cylinder is discharged into the air through the air back pressure ball valve until the pressure in the high-pressure gas cylinder is a set value.

[0021] When the pressure in the high-pressure gas cylinder is less than the lower limit of the set pressure, the intelligent transmission controller outputs a control signal to the air back pressure ball valve through the signal conversion control feedback module to control the air back pressure ball valve to close.

[0022] The application also discloses a control method of the powder rocket engine supply source pressure self-adaptive device.

[0023] When the pressure in the high-pressure gas cylinder is greater than the upper limit of the set pressure, the intelligent transmission controller outputs a control signal to the air back pressure ball valve through the signal conversion control feedback module to control the air back pressure ball valve to open, and the gas in the high-pressure gas cylinder is discharged into the air through the air back pressure ball valve until the pressure in the high-pressure gas cylinder is a set value.

[0024] When the pressure in the high-pressure gas cylinder is less than the lower limit of the set pressure, the intelligent transmission controller outputs a control signal to the air back pressure ball valve through the signal conversion control feedback module to control the air back pressure ball valve to close, and the pressure in the high-pressure gas cylinder is in the set range.

[0025] When the pressure in the high-pressure gas cylinder is in the set range, the air back pressure ball valve is in a closed state, and the gas in the high-pressure gas cylinder passes through the first electromagnetic valve and is divided into two parallel pipelines from the outlet of the first electromagnetic valve, enters the front end cavity of the powder engine powder supply system through the second electromagnetic valve through one pipeline, and enters the rear end cavity of the powder engine powder supply system through the third electromagnetic valve through the other pipeline.

[0026] The powder engine supply source self-adaptive device can realize self-adaptive adjustment of the pressure of the powder engine supply source, ensure self-adaptive and stable adjustment of the pressure in the cavity when the gas generated by the gas generator enters the powder engine supply source cavity, can realize remote control and monitoring recording functions, is convenient to use, and guarantees the safety of experiments. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1The principle diagram of the self-adaptive device for supplying air source pressure for the powder rocket engine

[0028] Figure 2 The wiring diagram of the intelligent transmission controller and the signal conversion control feedback module

[0029] Figure 3 The pressure-time curve of the high-pressure gas cylinder when the air is continuously supplied

[0030] Wherein: 10. The signal conversion control feedback module; 20. The intelligent transmission controller; 30. The air back pressure ball valve; 40. The high-pressure gas cylinder; 50. The gas generator; 60. The first electromagnetic valve; 61. The second electromagnetic valve; 63. The third electromagnetic valve; 70. The powder collecting tank; 80. The powder engine powder supply system; 90. The remote signal control monitoring device. DETAILED DESCRIPTION

[0031] The application will be described in detail below in combination with the drawings and specific embodiments.

[0032] The self-adaptive device for supplying air source pressure for the powder rocket engine, as shown in the figure, comprises: Figure 1

[0033] The high-pressure gas cylinder 40 has an air inlet connected with the air source pipeline; and an air outlet connected with an air outlet pipe, the outlet end of the air outlet pipe being connected with two parallel-connected third pipeline and fourth pipeline, the third pipeline being a gas discharge pipeline, the air back pressure ball valve 30 being connected with the third pipeline, and the air back pressure ball valve 30 being connected with the signal conversion control feedback module 10; the fourth pipeline being used for connecting with the powder engine powder supply system 80; the air source being the gas generator 50, the gas generator 50 being a chemical reaction device, and the gas generator 50 being always outputting gas outwardly after starting to work until the internal chemical reaction is finished.

[0034] The air outlet pipe is connected with the intelligent transmission controller 20, the intelligent transmission controller 20 is further connected with the signal conversion control feedback module 10, and the signal conversion control feedback module 10 is further connected with the remote signal control monitoring device 90 by wires.

[0035] The intelligent transmission controller 20 is used for outputting the signal of closing or opening to the air back pressure ball valve 30; the air back pressure ball valve 30 is used for closing or opening the air outlet pipe, so that the high-pressure gas cylinder 40 is closed when the pressure is lower than the set pressure, and the high-pressure gas cylinder 40 is communicated with the air source; the high-pressure gas cylinder 40 is opened when the pressure is higher than the set pressure, and the excess gas is discharged through the air outlet pipe and the air back pressure ball valve 30.

[0036] ​The fourth pipeline is provided with a first electromagnetic valve 60, and from the outlet of the first electromagnetic valve 60, two parallel pipelines are divided, one of which is communicated with the front cavity of the powder engine powder supply system 80 and is provided with a second electromagnetic valve 61; the other pipeline is communicated with the rear cavity of the powder engine powder supply system 80 and is provided with a third electromagnetic valve 62. The powder in the powder engine powder supply system 80 is discharged into the powder collecting box 70.

[0037] As shown in Figure 2 The power negative pole interface and the power positive pole interface of the intelligent transmission controller 20 are connected with the power positive pole port and the power negative pole port of the signal conversion control module 10 correspondingly;

[0038] The second relay interface of the intelligent transmission controller 20 is connected with the second relay interface of the signal conversion control module 10;

[0039] The current signal output port negative pole and the current signal output port positive pole of the intelligent transmission controller 20 are connected with the current signal input port negative pole and the current signal input port positive pole in the signal conversion control module 10 correspondingly;

[0040] The power negative pole interface of the intelligent transmission controller 20 is further connected with the control signal receiving end one of the back pressure ball valve 30;

[0041] The positive pole port and the negative pole port of the second relay of the signal conversion control module 10 are connected with the positive end and the negative end of the control line of the remote signal control monitoring device 90 correspondingly;

[0042] The negative pole port of the second relay is connected with the control signal receiving end one of the air back pressure ball valve 30;

[0043] The signal transmission port of the second relay is connected with the control signal receiving end two of the air back pressure ball valve 30.

[0044] The application further discloses a control method of the powder rocket engine supply gas source pressure self-adaptive device.

[0045] Before working, first, the pressure upper limit P1 and the pressure lower limit P2 of the intelligent control transmitter 20 are set; the gas generator 50 continuously generates gas into the high-pressure gas cylinder 40.

[0046] The high-pressure gas cylinder 40 is continuously filled with gas, when the internal pressure of the high-pressure gas cylinder 40 is greater than the set pressure upper limit, the intelligent transmission controller 20 outputs a control signal, which is transmitted to the air back pressure ball valve 30 through the signal conversion control feedback module 10, controls the air back pressure ball valve 30 to open, and the gas in the high-pressure gas cylinder is discharged into the air through the air back pressure ball valve 30, until the pressure in the high-pressure gas cylinder 40 is a set value;

[0047] When the pressure in the high-pressure cylinder 40 is less than the lower limit of the set pressure, the intelligent transmission controller 20 outputs a control signal to the air back pressure ball valve 30 via the signal conversion control feedback module 10 to control the air back pressure ball valve 30 to close.

[0048] As another embodiment, the application also discloses a control method of the powder rocket engine gas source pressure self-adaptive device, which is any one of the above, and the control method is as follows:

[0049] Before work, first set the upper limit P1 and the lower limit P2 of the pressure of the intelligent control transmitter 20; the gas generator 50 continuously generates gas into the high-pressure cylinder 40.

[0050] When the pressure in the high-pressure cylinder 40 is continuously filled with gas, the intelligent transmission controller 20 measures that the pressure in the high-pressure cylinder 40 is greater than the upper limit of the set pressure, and the intelligent transmission controller 20 outputs a control signal to the air back pressure ball valve 30 via the signal conversion control feedback module 10 to control the air back pressure ball valve 30 to open, and the gas in the high-pressure cylinder is discharged into the air via the air back pressure ball valve 30 until the pressure value in the high-pressure cylinder 40 is in the set range.

[0051] When the pressure in the high-pressure cylinder 40 is continuously filled with gas, the intelligent transmission controller 20 measures that the pressure in the high-pressure cylinder 40 is greater than the upper limit of the set pressure, and the intelligent transmission controller 20 outputs a control signal to the air back pressure ball valve 30 via the signal conversion control feedback module 10 to control the air back pressure ball valve 30 to open, and the gas in the high-pressure cylinder is discharged into the air via the air back pressure ball valve 30 until the pressure value in the high-pressure cylinder 40 is in the set range.

[0052] When the pressure value in the high-pressure cylinder 40 is in the set range, the air back pressure ball valve 30 is in the closed state, and the gas in the high-pressure cylinder 40 passes through the first electromagnetic valve 60, and is divided into two parallel pipelines from the outlet of the first electromagnetic valve 60, enters the front cavity of the powder engine powder supply system 80 via one pipeline through the second electromagnetic valve 61, and enters the rear cavity of the powder engine powder supply system 80 via another pipeline through the third electromagnetic valve 62.

[0053] When the pressure in the high-pressure cylinder 40 is observed to be abnormal through the remote signal control monitoring device 90, a control signal is manually input through the remote signal control monitoring device 90, transmitted to the air back pressure ball valve 30 via the signal conversion control feedback module 10 to control the back pressure ball valve 30 to open, and the gas in the high-pressure cylinder 40 is discharged into the air via the air back pressure ball valve 30. The input control signal is transmitted to the air back pressure ball valve 30 via the signal conversion control feedback module 10 to control the back pressure ball valve 30 to close, the opening and closing time of the back pressure ball valve is controlled to control the pressure in the high-pressure cylinder, and the safety of the experiment is ensured.

[0054] The path of the control signal E- output by the intelligent transmission controller 20 is: the negative electrode interface of the power supply - the control signal receiving end one of the back pressure ball valve 30

[0055] The path of the control signal E+ outputted by the intelligent transmission controller 20 is as follows: the positive electrode interface of the power supply of the intelligent transmission controller 20 - the interface one of the first relay - the interface two of the first relay - the interface one of the second relay - the interface two of the second relay - the control signal receiving end two of the air back pressure ball valve 30

[0056] There are two paths of relay switches in the signal conversion control module 10, one path is ④⑤⑥: this path is used for controlling the switch of the back pressure ball valve 30; the other path is ①②③: this path is used for controlling the switch of the back pressure ball valve 30 by the remote signal control monitoring device 90. The two paths are not opened or closed at the same time, ④⑤⑥ are always open, ④⑥ are always in the passage, ①②③ are always closed, ③① are in the open circuit. When the control signal is inputted, ④⑤⑥ are always closed, ④⑥ are disconnected, ①②③ are always closed, ③① are connected.

[0057] As a specific embodiment, nitrogen is used as the gas source gas in the experiment, and the gas source pressure of 3MPa is required to verify the practicability of the powder rocket engine gas source pressure self-adaptive device.

[0058] The operation is as follows: the upper limit of the pressure of the intelligent transmission controller 2 is set to 3.10MPa, and the lower limit of the pressure is set to 3.0MPa. Turn on the remote test signal D and the remote manual control signal C, and open the gas source to continuously charge the gas into the high-pressure gas cylinder 40. Figure 3 The pressure-time curve of the gas cylinder can be seen, and the dynamic stability function of the powder rocket engine gas source is effectively realized by the present application.

Claims

1. A powder rocket engine feed gas source pressure adaptive device, characterized by, The control method comprises the following steps: a high-pressure gas cylinder (40) is connected with a gas source pipeline at an air inlet; an air outlet of the high-pressure gas cylinder (40) is connected with an air outlet pipeline, an outlet end of the air outlet pipeline is connected with two parallel third and fourth pipelines, the third pipeline is a gas discharge pipeline, an air back pressure ball valve (30) is connected with the third pipeline, the air back pressure ball valve (30) is connected with a signal conversion control feedback module (10), and the fourth pipeline is used for being connected with a powder engine powder supply system (80); the air outlet pipeline is connected with an intelligent transmission controller (20), the intelligent transmission controller (20) is further connected with the signal conversion control feedback module (10), and the signal conversion control feedback module (10) is further connected with a remote signal control monitoring device (90) by wires; the intelligent transmission controller (20) is used for outputting a signal of closing or opening to the air back pressure ball valve (30), the air back pressure ball valve (30) is used for closing or opening the air outlet pipeline, the high-pressure gas cylinder (40) is closed when the pressure is lower than a set pressure, the high-pressure gas cylinder (40) is connected with the gas source, the high-pressure gas cylinder (40) is opened when the pressure is higher than the set pressure, and the excess gas is discharged through the air outlet pipeline and the air back pressure ball valve (30); a gas generator (50) is used as the gas source, the gas generator (50) is a chemical reaction device, and once the gas generator (50) starts to work, the gas generator (50) will continuously output gas to the outside until the chemical reaction in the gas generator (50) is completed; a first electromagnetic valve (60) is arranged on the fourth pipeline, from an outlet of the first electromagnetic valve (60), two parallel pipelines are divided, one of the pipelines is connected with a front end cavity of the powder engine powder supply system (80) in communication, a second electromagnetic valve (61) is arranged on the pipeline, and the other pipeline is connected with a rear end cavity of the powder engine powder supply system (80) in communication, and a third electromagnetic valve (62) is arranged on the pipeline.

2. A powder rocket engine supply pressure adaptive device as claimed in claim 1, characterized in that, a power negative pole interface and a power positive pole interface of the intelligent transmission controller (20) are connected with a power positive pole port and a power negative pole port of the signal conversion control feedback module (10) correspondingly; an interface two of a first relay of the intelligent transmission controller (20) is connected with an interface of a second relay of the signal conversion control feedback module (10); a current signal output port negative pole and a current signal output port positive pole of the intelligent transmission controller (20) are connected with a current signal input port negative pole and a current signal input port positive pole in the signal conversion control feedback module (10) correspondingly; the power negative pole interface of the intelligent transmission controller (20) is further connected with a control signal receiving end one of the air back pressure ball valve (30); a positive pole port and a negative pole port of the second relay of the signal conversion control feedback module (10) are connected with positive and negative ends of a control line of the remote signal control monitoring device (90) correspondingly; the negative pole port of the second relay is connected with the control signal receiving end one of the air back pressure ball valve (30); a signal transmission port of the second relay is connected with the control signal receiving end two of the air back pressure ball valve (30).

3. A control method of a powder rocket engine feed gas source pressure adaptive device according to any one of claims 1-2, characterized in that, The control method comprises the following steps: The high-pressure cylinder (40) is continuously filled with gas, and when the pressure in the high-pressure cylinder is greater than the upper limit of the set pressure, the intelligent transmission controller (20) outputs a control signal to the air back pressure ball valve (30) through the signal conversion control feedback module (10), controls the air back pressure ball valve (30) to open, and the gas in the high-pressure cylinder is discharged into the air through the air back pressure ball valve (30) until the pressure in the high-pressure cylinder (40) reaches the set value. When the pressure in the high-pressure cylinder (40) is less than the lower limit of the set pressure, the intelligent transmission controller (20) outputs a control signal to the air back pressure ball valve (30) through the signal conversion control feedback module (10), controls the air back pressure ball valve (30) to close.

4. A control method of a powder rocket engine feed gas source pressure adaptive device according to any one of claims 1-2, characterized in that, The control method is as follows: The high-pressure cylinder (40) is continuously filled with gas, and when the pressure in the high-pressure cylinder is greater than the upper limit of the set pressure, the intelligent transmission controller (20) outputs a control signal to the air back pressure ball valve (30) through the signal conversion control feedback module (10), controls the air back pressure ball valve (30) to open, and the gas in the high-pressure cylinder is discharged into the air through the air back pressure ball valve (30) until the pressure in the high-pressure cylinder (40) reaches the set value. When the pressure in the high-pressure cylinder (40) is less than the lower limit of the set pressure, the intelligent transmission controller (20) outputs a control signal to the air back pressure ball valve (30) through the signal conversion control feedback module (10), controls the air back pressure ball valve (30) to close, and the pressure in the high-pressure cylinder (40) is in the set range. When the pressure in the high-pressure cylinder (40) is in the set range, the air back pressure ball valve (30) is in the closed state, and the gas in the high-pressure cylinder (40) passes through the first electromagnetic valve (60), and from the outlet of the first electromagnetic valve (60), it is divided into two parallel pipelines, one pipeline enters the front cavity of the powder engine powder supply system (80) through the second electromagnetic valve (61); the other pipeline enters the rear cavity of the powder engine powder supply system (80) through the third electromagnetic valve (62).

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