阅读说明：本技术 一种产气增压装置 (Gas production supercharging device ) 是由 毛龙 鲁国林 杨威 张文龙 周渝淞 姚俊 于 2019-11-04 设计创作，主要内容包括：本发明涉及一种产气增压装置,包括：密封罐体(2)、出气管(11)、增压容器(14)；压力传感器(13)和微机控制器(9)；密封罐体(2)内部有加热装置(4),以加热其中的气体发生剂；出气管(11)连接密封罐体(2)侧壁上的出气口和增压容器(14)；压力传感器(13)连接增压容器(14)和微机控制器(9),用于监控增压容器(14)内的压力,并将压力数据传送至微机控制器(9)；微机控制器(9)连接密封罐体(2)内的加热装置(4),用于将接收的压力数据与设定的压力值进行比较,形成控制加热装置(4)的工作与否的控制指令。本发明装置产气效率高,可使用于各种需要气体增压的场所。(The invention relates to a gas production supercharging device, comprising: the device comprises a sealed tank body (2), an air outlet pipe (11) and a pressurizing container (14); a pressure sensor (13) and a microcomputer controller (9); a heating device (4) is arranged in the sealed tank body (2) to heat the gas generating agent in the tank body; the air outlet pipe (11) is connected with an air outlet on the side wall of the sealed tank body (2) and the pressurizing container (14); the pressure sensor (13) is connected with the pressurized container (14) and the microcomputer controller (9) and is used for monitoring the pressure in the pressurized container (14) and transmitting pressure data to the microcomputer controller (9); the microcomputer controller (9) is connected with the heating device (4) in the sealed tank body (2) and is used for comparing the received pressure data with a set pressure value to form a control instruction for controlling whether the heating device (4) works or not. The device has high gas production efficiency and can be used in various places requiring gas pressurization.)

1. A gas production and pressurization device is characterized by comprising: the device comprises a sealed tank body (2), an air outlet pipe (11) and a pressurizing container (14); a pressure sensor (13) and a microcomputer controller (9);

the sealed tank body (2) is used for sodium azide gas generating agent to react and generate gas, and a heating device (4) is arranged in the sealed tank body to heat the gas generating agent in the sealed tank body;

the sealed tank body (2) comprises a feeding box (5) positioned at the upper end and a gas storage box positioned at the lower end; the charging box (5) is of a funnel-shaped structure with a large upper part and a small lower part, and the upper part is used for containing a gas generating agent; the funnel neck at the lower part of the feeding box (5) extends into the gas storage box, the heating device (4) is arranged at the lower opening part of the funnel neck and is used for heating the gas generating agent falling into the funnel neck from the upper part of the feeding box (5), and the lower opening part of the funnel neck is also provided with a screen (3) so that gas generated by reaction and reaction products enter the gas storage box from meshes on the screen (3);

the gas storage tank is also used for containing water, so that sodium generated by the reaction of the heated gas generating agent falls into the bottom of the gas storage tank and reacts with the water in the gas storage tank again to generate hydrogen;

the gas outlet pipe (11) is connected with a gas outlet on the side wall of the gas storage tank and is used for discharging gas generated in the gas storage tank (2) to the pressurization container (14);

the pressurizing container (14) is communicated with the sealed tank body (2) through an air outlet pipe (11) and is used for storing gas generated in the sealed tank body (2) to generate pressurization;

the pressure sensor (13) is connected with the pressurized container (14) and the microcomputer controller (9) and is used for monitoring the pressure in the pressurized container (14) and transmitting pressure data to the microcomputer controller (9);

the microcomputer controller (9) is connected with the pressure sensor (13) and the heating device (4) in the sealed tank body (2) and is used for receiving pressure data of the pressurized container (14) acquired by the pressure sensor (13), comparing the pressure data with a set pressure value and forming a control instruction for controlling the heating device (4) to start heating or stop heating according to a data comparison result.

2. The gas generation and pressurization device according to claim 1, characterized in that a belleville spring (7) and a push plate (8) are arranged in the top of the sealed tank body (2);

the two ends of the belleville spring are respectively connected with the inner top plate and the push plate (8) of the sealed tank body (2) so as to push the push plate (8) to move downwards through pressure deformation according to the reaction process of the gas generating agent in the sealed tank body (2).

3. The gas production and pressurization device according to claim 1, wherein a vibration motor (10) is arranged on the screen (3), and the vibration motor (10) is connected to the microcomputer controller (9) and used for working synchronously with the heating device (4) according to a control instruction of the microcomputer controller (9) so that a reaction product sodium heated by the gas generating agent falls into the bottom of the gas storage tank in time to react with water.

4. The gas production and pressurization device according to claim 1, characterized in that a filtering device (12) is arranged in the gas outlet pipe (11) for filtering impurities in the produced gas.

5. The gas production and pressurization device according to claim 4, characterized in that the filtering device (12) is internally provided with a filter screen and a desiccant, wherein the desiccant is a mixture of one or more of molecular sieve particles, soda lime and allochroic silica gel.

6. Gas production and pressurization device according to claim 1, characterized in that the heating device (4) is an electric heating wire.

7. The gas production and pressurization device according to claim 1, wherein the microcomputer controller (9) has a time compensation function to compensate for the hysteresis property of the heating device (4) for gas production and gas production stop, so as to heat in advance and stop gas production in advance.

8. A gas generation and pressurization method, which uses the gas generation and pressurization device according to any one of claims 1 to 7, comprising the steps of:

s1, adding a gas generating agent into a feeding box (5) at the upper end of a sealed tank body (2), adding a small amount of water into a gas storage box at the lower end, connecting the feeding box (5) and the gas storage box to form an integral structure, namely, the sealed tank body (2), connecting other parts of a gas generation and pressurization device, starting a pressure sensor (13) and a microcomputer controller (9), and starting a heating device (4) for heating;

s2, the microcomputer controller (9) controls the heating device (4) to work according to the pressure data in the pressurized container (14) collected by the pressure sensor (13) until the pressure in the pressurized container (14) is increased to and kept at a preset value.

9. The gas production pressurization method according to claim 8,

in the step S1, the gas generating agent is a mixture of sodium azide, an oxidant and an adhesive, and the mixture is made into a disc shape of phi 2cm to phi 4 cm; the oxidant is one or a mixture of iron oxide, cobalt oxide and molybdenum disulfide; the adhesive is kaolin and/or magnesium stearate; the mass ratio of the oxidant is less than 4%;

in the step S1, the height of the small amount of water contained in the gas storage tank is L _S(ii) a The air outlet pipe (11) extends into the sealed tank body (2) and has a length L _CThe length of the funnel neck extending into the gas storage box is L _LThen L is _S、L _C、L _LSatisfies the following relationship: when the sealed tank body (2) is at any inclination or overturning angle, the water surface in the gas storage tank is positioned below the bottommost part of the screen (3) and/or the gas outlet pipe (11) is positioned below the opening part in the gas storage tank, so that water at the bottom of the gas storage tank in an inclined or overturning use environment is prevented from entering the charging tank (5) and/or the pressurizing container (14).

Technical Field

The invention belongs to the technical field of controllable inflation such as aircraft oil tank pressurization and satellite cold air propulsion, and particularly relates to a gas production pressurization device.

Background

In fuel aircraft engines, along with consumption of kerosene, the liquid level is reduced to form a certain vacuum area, fuel can be continuously supplied only by providing certain pressure, and currently, a high-pressure gas cylinder inflation mode is generally used, but the gas cylinder needs to be detected regularly, the occupied size is large, the use and maintenance of high-pressure gas are difficult, the use efficiency of the high-pressure gas is low without heating, the weight of the system is increased, and the complexity of the system is increased by introducing a heating system.

The chemical gas production supercharging device generally adopts a method of igniting a gas generator which takes sodium azide as a main gas production agent, only nitrogen is generated in the reaction, the gas production rate is only 40-50%, and the gas generator can not be stopped after the reaction is started, so that the use condition of the gas generator is limited.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a gas-producing and pressurizing device which can controllably produce gas and pressurize an oil tank in real time.

The technical scheme of the invention is that the gas production supercharging device comprises: the tank body, the air outlet pipe and the pressurizing container are sealed; pressure sensor and microcomputer controller; the sealed tank body is used for sodium azide gas generating agent to react in the tank body and generate gas, and a heating device is arranged in the tank body to heat the gas generating agent in the tank body; the sealed tank body comprises a feeding box positioned at the upper end and a gas storage box positioned at the lower end; the charging box is of a funnel-shaped structure with a large upper part and a small lower part, and the upper part of the charging box is used for containing a gas generating agent; the funnel neck at the lower part of the charging box extends into the gas storage box, the heating device is arranged at the lower opening part of the funnel neck and is used for heating the gas generating agent falling into the funnel neck from the upper part of the charging box, and the lower opening part of the funnel neck is also provided with a screen mesh so that gas and reaction products generated by reaction enter the gas storage box from the mesh holes on the screen mesh; the gas storage tank is also used for containing water, so that sodium generated by the reaction of the heated gas generating agent falls into the bottom of the gas storage tank and reacts with the water in the gas storage tank again to generate hydrogen; the gas outlet pipe is connected with a gas outlet on the side wall of the gas storage box and is used for discharging gas generated in the gas storage box to the pressurizing container; the pressurizing container is communicated with the sealed tank body through an air outlet pipe and is used for storing gas generated in the sealed tank body to generate pressurization; the pressure sensor is connected with the pressurized container and the microcomputer controller and used for monitoring the pressure in the pressurized container and transmitting pressure data to the microcomputer controller; the microcomputer controller is connected with the pressure sensor and the heating device in the sealed tank body, and is used for receiving the pressure data of the pressurized container acquired by the pressure sensor, comparing the pressure data with a set pressure value, and forming a control instruction for controlling the heating device to start heating or stop heating according to the data comparison result.

The pressure sensor monitors the pressure in the pressurizing container, the pressurizing container transmits the obtained pressure signal to the microcomputer controller, when the pressure is lower than the set lower limit, the heating device starts heating and vibrating, and when the pressure is higher than the set upper limit, the heating device is disconnected to stop heating and vibrating.

Further, a belleville spring and a push plate are arranged in the top of the sealed tank body; the two ends of the belleville spring are respectively connected with the inner top plate and the push plate of the sealed tank body so as to push the push plate to move downwards through pressure deformation according to the reaction process of the gas generating agent in the sealed tank body.

The belleville spring and the push plate belong to the design of a pushing module: one end of the belleville spring is fixed on the end cover of the sealed tank body, the other end of the belleville spring is fixed on the push plate, the belleville spring is tightly pressed after tablets are filled, the tablets are heated and decomposed and then leak out of the screen under the action of the vibrating motor, and when a part of the tablets are consumed, the belleville spring automatically pushes the push plate to push downwards by means of self deformation force.

Furthermore, a vibration motor is arranged on the screen mesh and connected to the microcomputer controller, and the vibration motor and the heating device work synchronously according to a control instruction of the microcomputer controller, so that the reaction product sodium after the gas generating agent is heated falls into the bottom of the gas storage tank in time to react with water.

Furthermore, a filtering device is arranged in the gas outlet pipe and used for filtering impurities in the produced gas.

Furthermore, a filter screen and a drying agent are arranged in the filtering device, and the drying agent is one or a mixture of more of molecular sieve particles, soda lime and allochroic silica gel.

Further, the heating device is an electric heating wire or a microwave heater.

Furthermore, the microcomputer controller has a time compensation function to make up for the hysteresis property of the heating device for heating and gas production stopping, so as to heat in advance and stop gas production in advance.

The invention also provides a gas production and pressurization method by using the gas production and pressurization device, which comprises the following steps: s1, adding a gas generating agent into a feeding box at the upper end of the sealed tank body, adding a small amount of water into a gas storage box at the lower end, connecting the feeding box and the gas storage box to form an integral structure, namely, the sealed tank body, connecting other parts of a gas production and pressurization device, starting a pressure sensor and a microcomputer controller, and starting a heating device to heat; and S2, controlling the heating device to work by the microcomputer controller according to the pressure data in the pressurized container acquired by the pressure sensor until the pressure in the pressurized container is increased to and kept at a preset value.

Further, in the step S1, the gas generating agent is a mixture of sodium azide, an oxidant and a binder, and the mixture is formed into a disc shape of Φ 2cm to Φ 4 cm; the oxidant is one or a mixture of iron oxide, cobalt oxide and molybdenum disulfide; the adhesive is kaolin and/or magnesium stearate; the mass ratio of the oxidant is less than 4%. In the step S1, the height of the small amount of water contained in the gas storage tank is L _S(ii) a The air outlet pipe extends into the sealing tank body and has a length L _CThe length of the funnel neck extending into the gas storage box is L _LThen L is _S、L _C、L _LSatisfies the following relationship: when the sealed tank body is at any inclination or overturning angle, the water surface in the gas storage tank is positioned below the bottommost part of the screen and/or below the opening part of the gas outlet pipe in the gas storage tank, so that water at the bottom of the gas storage tank in an inclined or overturning use environment is prevented from entering the charging tank and/or the pressurizing container.

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. compared with the pressurization mode of the gas cylinder, the device is safer, and the defects of easy leakage, high pressure and large volume are overcome.

2. The heating and decomposition of the gas generating agent in the device are controlled by the heating device and the microcomputer controller, when the gas production rate is enough, the heating device is closed, the gas generating agent loses the heat source and the self reaction heat is not enough to support the reaction to continue, the decomposition is stopped, and the reaction is terminated. If gas is needed, the microcomputer controller controls the heating device to work and then heat again to continue gas production, and the defect that the traditional nitrogen generator cannot stop after being ignited is overcome.

3. Compared with the traditional nitrogen generator, the gas generating agent used by the device only needs to be added with a small amount of oxidant, so that the nitrogen generation amount is increased. A small amount of oxidant is added into the sodium azide, the heat generated by the oxidant is not enough to support the reaction to be continuous, a heating device is needed to be matched to carry out the reaction, the reaction can be stopped or continued by controlling the heating device, and the heat supply requirement of the heating device can be reduced.

4. Compared with a common nitrogen gas generator, the invention not only generates nitrogen gas but also generates hydrogen gas, thereby doubling the gas production rate. The gas production supercharging device can generate 1.5 mol of nitrogen and 0.5 mol of hydrogen by decomposing 1 mol of sodium azide, which is equivalent to generate 2 mol of gas, and the volume of any gas of 1 mol is the same under the standard condition, so the gas production supercharging device is particularly suitable for supercharging occasions.

5. Compared with a common nitrogen generator, the device of the invention does not need initiating explosive such as detonators, ignition powder and the like, and improves the safety of the product in production, transportation and storage.

6. Compared with the gas generated by the gas cylinder, the gas generated by the device is a hot gas source, so that the utilization rate of the gas is improved.

Drawings

These and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a gas production and pressurization device according to an embodiment of the present invention;

FIGS. 2 to 5 are schematic diagrams showing the relationship between the liquid level of water at the bottom of the gas storage tank and the position of the gas exhaust pipe and the screen in the embodiment of the invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.