CN221055633U - Piston type energy release mechanism in supercritical carbon dioxide emission device - Google Patents

Abstract

The utility model relates to the field of gas cannon launching devices, in particular to a piston type energy release mechanism in a supercritical carbon dioxide launching device, which comprises the following components: valve body, pressure differential trigger subassembly, pressure subassembly and pressure release subassembly. The device uses the pressure difference triggering component as the release triggering mechanism of the piston type energy release mechanism through the emission pressure of the piston type energy release mechanism set by the pressure charging component, so that the emission pressure of the piston type energy release mechanism is more accurate, and the reaction speed of the piston type energy release mechanism can be improved.

Description

Piston type energy release mechanism in supercritical carbon dioxide emission device

Technical Field

The utility model relates to the field of gas cannon launching devices, in particular to a piston type energy release mechanism in a supercritical carbon dioxide launching device.

Background

The supercritical carbon dioxide emission device is a novel power device which has the advantages of wide sources of medium materials, safe transportation and storage, no generation of high-temperature air flow, no generation of harmful gas, no occurrence of smoke and fire during energy release, high releasable pressure (the theoretical pressure can reach more than 500 MPa), high energy (the energy released by unit mass is equivalent to that of a conventional propellant at 300 MPa), various application occasions (projectile, missile, rocket, unmanned aerial vehicle emission and the like), and wide potential application. The principle of the device is that the carbon dioxide in the closed cavity is heated rapidly to ensure that the pressure of the carbon dioxide is increased to a large value, and then the pressure is released instantaneously to push the target workpiece to move rapidly and perform a preset task. The pressure/energy release mechanism is reliable in sealing before release, accurate in pressure value during release, quick in release process, simple in structure, convenient to operate and capable of being used repeatedly. The existing mechanisms comprise burst membrane type, straight-through valve type and the like, which are all insufficient.

Especially in bursting diaphragm type pressure release mechanism, because the working pressure ratio of current carbon dioxide gas big gun is great, and gas pressure is commonly used to 100 ~ 200MPa, reaches supercritical state in liquid CO ₂, and the air chamber pressure exceeds the rupture limit of rupture disk, and the rupture disk just can burst release pressure, so, the rupture disk all need be changed after every blasting, and receive the material influence of rupture disk, receive the influence of blasting fluctuation when leading to every transmission to lead to the firing pressure inaccurate.

Accordingly, there is a need to provide a piston energy release mechanism in a supercritical carbon dioxide emitting device to address the above-described problems.

Disclosure of utility model

The utility model provides a piston type energy release mechanism in a supercritical carbon dioxide emission device, which aims to solve the problems that the pressure of gas is 100-200 MPa, the pressure of a gas chamber exceeds the damage limit of a rupture disk when liquid CO2 reaches a supercritical state, the rupture disk can only release the pressure in a blasting way, and the rupture disk needs to be replaced after each blasting and is influenced by the material of the rupture disk, so that the influence of blasting fluctuation is caused during each emission, and the emission pressure is inaccurate.

The utility model relates to a piston type energy release mechanism in a supercritical carbon dioxide emission device, which adopts the following technical scheme: comprising the following steps:

the valve body is internally provided with a first valve cavity and a second valve cavity, the first valve cavity is used for being communicated with an outlet of the energy generator, and the first valve cavity is respectively communicated with the second valve cavity and an energy emission port on the valve body;

The pressure difference triggering assembly comprises a valve rod, wherein the valve rod penetrates through a communication part of the first valve cavity and the second valve cavity, one end of the valve rod stretches into the first valve cavity and then is connected with a small piston, and the other end of the valve rod stretches into the second valve cavity and then is connected with a large piston, and the pressure difference triggering assembly is used for controlling the opening or closing of a communication port between the first valve cavity and the generator shell according to the pressure of the generator shell and the pressure in the second valve cavity;

The pressurizing assembly is used for filling high-pressure medium into the second valve cavity at one side of the large piston, which is away from the small piston, according to the test requirement pressure;

The pressure relief assembly is used for relieving pressure of the second valve cavity at one side of the large piston, which is away from the small piston;

Wherein, when a differential pressure is generated between the generator housing and the area filled with the high pressure medium, the differential pressure drives the valve rod to move, so that the small piston opens or closes the energy emission port.

Preferably, the pressure relief assembly comprises:

The two ports of the switch pipeline are respectively communicated with the second valve cavities at the two sides of the large piston;

The switch valve is arranged on the switch pipeline and used for controlling the on-off of the switch pipeline.

Preferably, the heating component is an electric heating tube.

Preferably, the generator shell is provided with a pressure detection module and a temperature detection module, and detection ends of the pressure detection module and the temperature detection module extend into the generator shell.

Preferably, the high pressure medium is a gas or a liquid.

Preferably, one end of the energy emission port is communicated with the first cavity, and the other end of the energy emission port is connected with an air outlet pipe which is used for being communicated with an inlet of the gas gun.

Preferably, the pressurizing assembly comprises a high-pressure pump, and an outlet of the high-pressure pump is communicated with the second valve cavity through an inflation pipeline.

Preferably, the area of the large piston is 5-9 times the area of the small piston.

The beneficial effects of the utility model are as follows:

1. The device comprises a valve body, a valve rod, a small piston, a pressure difference triggering component, a heating device, a pressure relief component, a pressure release mechanism and a pressure release mechanism, wherein the valve body is connected with an outlet of an energy generator, the valve body is provided with a first cavity and a second valve cavity, the valve rod is arranged between the first cavity and the second valve cavity in a penetrating mode, the end part of the valve rod is connected with the small piston and the large piston, a high-pressure medium is filled into the second valve cavity where the large piston is located according to a pressure value required by a test, the heating device of the energy generator is opened, so that supercritical carbon dioxide liquid components filled in a main cavity of the generator rapidly gasify the pressure until carbon dioxide liquid in the energy generator reaches a supercritical state, the pressure relief component is opened, the pressure in the second valve cavity where the large piston deviates from the small piston is relieved through the pressure relief component until the pressure in the second valve cavity exceeds the pressure in the second valve cavity, at the moment, the pressure difference triggering component triggers, namely, the small piston drives the large piston on the valve rod to move due to the pressure difference force, the small piston moves away from a communication port of the energy generator and the first cavity, and then the high-pressure carbon dioxide gas in the energy generator passes through the first cavity, and the energy emission port is emitted by the energy emission port, namely the pressure release mechanism through the piston, and the pressure release mechanism is triggered by the piston release mechanism set by the pressure release mechanism.

2. When the supercritical carbon dioxide pressure in the energy generator exceeds the pressure in the second valve cavity, the pressure release component of the release device adopts a combination of a switch pipeline and a switch valve, namely, the pressure difference force is utilized to release the high-pressure medium on the right side of the large piston to the left side of the large piston through the switch valve and the switch pipeline, at the moment, the pressure difference force and the pressure of the high-pressure medium jointly enable the piston combination (the small piston, the valve rod and the piston combination communicated with the large piston) to move rightwards, so that the speed of the small piston moving away from the communication port of the generator shell and the first cavity is accelerated, and the reaction speed of the piston type energy release mechanism is improved.

3. Because the supercritical carbon dioxide pressure is 200 to 300MPa, if the large piston and the small piston are arranged unreasonably, the pressurizing equipment and the second valve cavity bear large pressure, so the area of the large piston is 5 to 9 times of the area of the small piston, the difference of the areas of the large piston and the small piston is generated, the second valve cavity only needs to be filled to be far smaller than the set pressure in the cavity of the generator shell, and the pressurizing equipment with small magnitude can be used for pressurizing the second valve cavity, and the damage of the equipment caused by high pressure is avoided.

4. In addition, the release structure of the utility model releases high-pressure carbon dioxide according to the pressure difference by the pressure difference trigger assembly, so that residues after each explosion of the traditional rupture disk are not generated in the process, and therefore, the release structure of the utility model has no influence on fluid and more stable release energy.

5. The carbon dioxide is heated by the high-energy electric heating rod, so that the heating device is safer and more stable than the existing heating device adopting chemical agents.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a connection structure between a piston type energy release mechanism and an energy generator in a supercritical carbon dioxide emission device according to the present utility model;

Fig. 2 is a flow chart of carbon dioxide gas emitted from the piston energy release mechanism of fig. 1.

In the figure: 4. an end cap; 5. a generator housing; 6. a pressure sensor; 7. an electric heating tube; 8. a temperature sensor; 9. a valve body; 10. an air outlet pipe; 11. a switch pipeline; 12. a switch valve; 13. a valve stem; 14. a second valve chamber; 15. an end cap; 16. and a pressurizing pipeline.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

An embodiment of a piston energy release mechanism in a supercritical carbon dioxide emitting device of the present utility model, as shown in fig. 1, comprises: the valve body 9, the pressure difference triggering component, the pressurizing component and the pressure relief component; specifically, a heating component is arranged in a generator shell 5 of the energy generator, and the generator shell 5 is communicated with a carbon dioxide storage tank through an injection port; the valve body 9 is internally provided with a first valve cavity and a second valve cavity 14, the first valve cavity is respectively communicated with the second valve cavity 14 and an energy emission port on the valve body 9, the energy emission port is used for being communicated with an inlet of a gas gun, as shown in fig. 2, and the first valve cavity is communicated with the second valve cavity 14; the valve rod 13 of the pressure difference triggering assembly is arranged at the communication position of the first valve cavity and the second valve cavity 14 in a penetrating way, one end of the valve rod 13 extends into the first valve cavity and then is connected with a small piston, and the other end of the valve rod 13 extends into the second valve cavity 14 and then is connected with a large piston; the pressurizing assembly is used for filling high-pressure medium into the second valve cavity 14 at the side of the large piston, which is away from the small piston, according to the test requirement pressure; the pressure relief assembly is used for relieving pressure of the second valve cavity 14 on one side of the large piston, which is away from the small piston; wherein when a differential pressure is generated between the generator housing 5 and the area filled with high pressure medium, the differential pressure drives the valve stem to move, so that the small piston opens or closes the energy emitting port.

Specifically, as shown in fig. 1 and fig. 2, the present embodiment provides a first pressure relief assembly, and the first pressure relief assembly specifically includes: the two ports of the switch pipeline 11 are respectively communicated with the second valve cavities 14 at the two sides of the large piston; the switch pipe 11 is provided with a switch valve 12 for controlling the on-off of the switch pipe 11, it is noted that in this embodiment, one end of the second valve cavity 14 facing away from the first valve cavity is open, and an end cover 15 for closing the opening is provided on the open end, wherein, one end of the switch pipe 11 passes through the end cover 15 to communicate with the second valve cavity 14, and the other end of the switch pipe 11 communicates with the second valve cavity 14 through a through hole formed in the outer periphery of the valve body 9, (in this embodiment, as shown in fig. 1, one end of the switch pipe 11 communicates with the second valve cavity 14 from the outer periphery of the valve body 9, the other end of the switch pipe 11 communicates with the second valve cavity 14 from the end face facing away from the generator housing 5 from the valve body 9, and it is noted that in this embodiment, the port communicating from the outer periphery of the valve body 9 with the second valve cavity 14 needs to be provided on the outer periphery facing away from the end cover 15 side), namely, when the pressure in the cavity of the generator shell 5 reaches a set pressure value, the switch valve 12 is controlled to be opened, at the moment, due to the pressure increase in the generator shell 5, the pressure tends to push the piston combination consisting of the small piston, the valve rod and the large piston to the right until the pressure in the shell of the generator exceeds the pressure in the second valve cavity 14, at the moment, the pressure difference triggering assembly triggers, namely, the piston combination pushes to the right so that a high-pressure medium enters the left side of the large piston from the switch pipeline 11, at the moment, the left side pressure of the large piston realizes pressure relief, and the large piston moves to the rightmost side of the second valve cavity 14 under the action of the pressure in the high-pressure medium and the cavity of the generator shell 5, so that the pressure relief is realized.

The second pressure release assembly is a combination of a pressure release pipeline and a pressure release valve, wherein the pressure release pipeline is communicated with the second valve cavity 14, the pressure release valve is arranged on the pressure release pipeline, the pressure release valve is controlled manually, or the pressure release valve adopts an electromagnetic valve, when the electromagnetic valve is adopted, the pressure sensor 8 detects that the pressure in the cavity of the generator shell 5 reaches a set pressure value, the electromagnetic pressure release valve is controlled to be opened through the control module, and pressure release of the second valve cavity 14 is achieved.

When the piston type energy release mechanism works, the second valve cavity 14 of the valve body 9 in the piston type energy release mechanism is filled with high-pressure fluid, the high-pressure fluid pushes the large piston to drive the small piston to move in the first cavity until the large piston moves to the limit, at this time, as shown in fig. 2, the small piston seals the communication port between the generator shell 5 and the valve body 9 of the energy generator, when the carbon dioxide in the generator shell 5 reaches the critical state before firing the projectile 22, the switch valve 12 of the pressure release assembly is opened, the pressure in the generator shell 5 is gradually increased until the pressure in the generator shell 5 is greater than the pressure in the second valve cavity 14, at this time, the high-pressure fluid in the second valve cavity 14 flows from one side to the other side of the large piston through the switch pipeline 11 under the pressure, namely, as shown in fig. 2, the pressure in the second valve cavity 14 on the right side of the large piston is reduced, the pressure on the left side is increased, thereby pushing the large piston to move to the right until the small piston moves to open the communication port between the generator shell 5 and the valve body 9, the pressure in the generator shell 5 and the gas outlet pipe 10 passes through the gas outlet pipe 10 and then enters the high-pressure air outlet pipe 10, and then enters the high-pressure gun 10 through the valve body.

Specifically, in this embodiment, one end of the energy emitting port is communicated with the first cavity, and the other end of the energy emitting port is connected with an air outlet pipe 10, and the air outlet pipe 10 is used for communicating with an inlet of the gas gun.

Specifically, the heating component of this embodiment is an electric heating tube 7, that is, the embodiment adopts a high-energy electric heating rod to heat carbon dioxide, which is safer and more stable than the existing heating method adopting chemical agents.

Specifically, a pressure detection module and a temperature detection module are arranged on the generator shell 5, and detection ends of the pressure detection module and the temperature detection module extend into the generator shell 5, as shown in fig. 1, the pressure detection module adopts a pressure sensor 6, and the temperature detection module adopts a temperature sensor 8.

Specifically, in this embodiment, the high-pressure medium for pushing the large piston is a liquid or a gas with stable properties, easy availability and good fluidity, and the gas or the liquid which is not corrosive, does not affect the environment and equipment and has small flow damping is adopted, so that one of water, oil, nitrogen or air is adopted in this embodiment.

Specifically, the pressurizing assembly includes a high pressure pump, the outlet of which communicates with the second valve chamber 14 through an inflation line 16.

Specifically, in order to reduce the amount of high-pressure medium to be filled, in this embodiment, the area of the large piston is 8 times that of the small piston, and because of the difference between the areas of the end surfaces of the large piston and the small piston, the second valve cavity 14 only needs to be filled to be far smaller than the set pressure in the cavity of the generator housing 5, so that the sealing effect of the communication port between the generator housing 5 and the first cavity can be realized; since the maximum pressure of the cavity of the generator housing 5 in the intended use can be up to 300MPa, the reduced working pressure of the second valve chamber 14 is 37.5MPa.

It should be noted that, as shown in fig. 1, the generator housing 5 is straight tubular, and both ends are open, one end of the generator housing is closed by the end cap 4 in threaded connection, the other end is communicated with the first cavity of the valve body 9, the electric heating tube 7 penetrates into the generator housing 5 from the end cap 4 and is connected with the power supply through the switch, wherein the first cavity is a circular cavity, the small piston is slidably arranged in the first cavity, the air outlet pipe 10 is arranged on the side surface of the valve body 9, one end of the air outlet pipe 10 is communicated with the first cavity through the air outlet hole formed on the side surface of the valve body 9, the communicating position of the air outlet hole and the first cavity forms a communicating port, when the amount of high-pressure medium on both sides of the large piston changes, the large piston is pushed to move through the pressure difference effect, so as to drive the small piston to move in the first cavity, and the communicating port between the generator housing 5 and the first cavity is blocked.

Principle of operation

When the device works, the air cannon is filled with the projectile, then a high-pressure medium is filled into the second valve cavity 14 of the valve body 9 of the piston type energy release mechanism according to the pressure value required by the test, and the high-pressure medium pushes the large piston of the pressure difference trigger assembly to enable the piston combination (composed of the large piston, the valve rod and the small piston) to move, so that the small piston seals up the communication port between the first valve cavity and the generator shell 5, and the generator shell 5 is completely sealed; when the device works, the heating device is turned on, liquid carbon dioxide is injected into the generator shell 5 of the piston type energy release mechanism through the filling opening, the filling opening valve is closed after filling, and the liquid supercritical carbon dioxide is heated and gasified rapidly, so that the pressure in the cavity of the generator shell 5 is increased rapidly. In the heating process, the pressure sensor 6 continuously detects the pressure in the cavity of the generator shell 5, when the pressure in the cavity of the generator shell 5 does not reach the set pressure, the inner cavity of the generator shell 5 is continuously closed under the action of a high-pressure medium in the second valve cavity 14 by the piston combination, when the pressure sensor 6 detects that the internal pressure of the generator shell 5 reaches a preset value, the energy in the generator shell 5 is released, namely, high-pressure carbon dioxide mixed gas in the generator shell 5 rapidly enters a gas gun through the gas outlet pipe 10 to drive the projectile in the gas gun to be launched, and the test launching process of the gas gun is completed, wherein the specific energy release modes are as follows:

First release mode: the second pressure release assembly is adopted, namely, a pressure release pipeline and a pressure release valve are adopted to release pressure of the second valve cavity 14, so that the pressure difference triggering assembly triggers to control the opening of a communication port between the first valve cavity and the generator shell 5, namely, the pressure release valve on the pressure release pipeline is opened, high-pressure medium in the second valve cavity 14 is discharged, the combined piston formed by the valve rod 13, the small piston and the large piston moves rightwards under the high-pressure action of the generator shell 5, the generator shell 5 is communicated with a channel of the air outlet pipe 10, high-pressure carbon dioxide fluid is sprayed out from the air outlet pipe, and the energy release process is completed.

The second release mode: when the first pressure relief assembly is adopted and liquid is filled into the second valve cavity 14, specifically, the left side face of the large piston of the pressure relief assembly is provided with an inlet, namely, in the release mode, the switch valve 12 in the switch pipeline 11 is firstly opened, so that the second valve cavity 14 on the left side and the right side of the large piston are communicated, and due to the high pressure action of the generator shell 5, the piston assembly moves right, at the moment, high-pressure medium in the right cavity flows to the left cavity, the thrust is lost on the right side of the piston assembly, and the piston assembly moves right continuously under the action of pressure, so that the generator shell 5 is communicated with the first cavity, and is communicated with the air outlet pipe 10, and high-pressure fluid in the generator shell 5 is sprayed out through the channel of the air outlet pipe 10, so that the energy release process is completed.

Third release mode: when the first pressure relief component is adopted and gas is filled into the second valve cavity 14, namely the second valve cavity 14 is filled with high-pressure gas, and the large piston is used for sealing the gas inlet of the switch pipeline 11; when the pressure in the cavity of the generator shell 5 reaches a set value, the piston combination moves right under the pressure pushing, the air inlet blocked by the large piston is opened, the gas medium on the right side of the large piston enters the left side of the large piston, the piston combination loses supporting force, and the piston combination moves right rapidly under the pushing of the high-pressure fluid pressure in the generator shell 5, so that the generator shell 5 is communicated with the first cavity and then communicated with the air outlet pipe 10, and the high-pressure fluid in the generator shell 5 is sprayed out through the channel of the air outlet pipe 10, thereby completing the energy release process.

The high-pressure medium in the first release mode and the second release mode is liquid, oil or water is adopted in the embodiment, and the high-pressure medium in the third release mode is gas, and air or nitrogen is adopted in the embodiment.

In summary, according to the piston type energy release mechanism in the supercritical carbon dioxide emission device provided by the embodiment of the utility model, the valve body is connected to the emitter shell of the piston type energy release mechanism, the first cavity and the second valve cavity are arranged on the valve body, the valve rod is arranged between the first cavity and the second valve cavity in a penetrating manner, the end part of the valve rod is connected with the small piston and the large piston, the high-pressure medium is filled into the second valve cavity where the large piston is positioned according to the pressure value required by the test, when the carbon dioxide liquid in the emitter shell reaches the supercritical state, the pressure release assembly is started, the pressure in the emitter shell exceeds the pressure in the second valve cavity, at the moment, the pressure difference triggering assembly triggers, namely, the small piston drives the large piston on the valve rod to move due to the pressure difference force, the small piston moves away from the communication port between the emitter shell and the first cavity, and then the high-pressure carbon dioxide gas in the emitter shell passes through the first cavity, and the energy emission port is used for emitting a gas gun, namely, the emission pressure of the piston type energy release mechanism set by the pressurizing assembly is used as the pressure release mechanism of the pressure difference triggering assembly, and the pressure difference triggering assembly is used as the pressure release mechanism of the piston type energy release mechanism, so that the pressure release mechanism is more accurate.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (8)

1. A piston energy release mechanism in a supercritical carbon dioxide emission device, comprising:

The valve body (9) is internally provided with a first valve cavity and a second valve cavity (14), the first valve cavity is used for being communicated with an outlet of the energy generator, and the first valve cavity is respectively communicated with the second valve cavity (14) and an energy emission port on the valve body (9);

The differential pressure trigger assembly comprises a valve rod (13), wherein the valve rod (13) is arranged at the communication position of the first valve cavity and the second valve cavity (14) in a penetrating way, one end of the valve rod (13) stretches into the first valve cavity and then is connected with a small piston, and the other end of the valve rod (13) stretches into the second valve cavity (14) and then is connected with a large piston;

The pressurizing assembly is used for filling high-pressure medium into a second valve cavity (14) at one side of the large piston, which is away from the small piston, according to the test requirement pressure;

the pressure relief assembly is used for relieving pressure of a second valve cavity (14) on one side of the large piston, which is away from the small piston;

Wherein, when a differential pressure is generated between the generator shell (5) and the area filled with high-pressure medium, the differential pressure drives the valve rod to move, so that the small piston opens or closes the energy emission port.

2. The piston energy release mechanism in a supercritical carbon dioxide projection apparatus as claimed in claim 1, wherein the pressure relief assembly comprises:

The two ports of the switch pipeline (11) are respectively communicated with the second valve cavities (14) at the two sides of the large piston;

and a switch valve (12) arranged on the switch pipeline (11) and used for controlling the on-off of the switch pipeline (11).

3. A piston energy release mechanism in a supercritical carbon dioxide emission device according to claim 1, characterized in that the heating element is an electric heating tube (7).

4. The piston energy release mechanism in a supercritical carbon dioxide emission device according to claim 1, wherein a pressure detection module and a temperature detection module are arranged on the generator housing (5), and detection ends of the pressure detection module and the temperature detection module extend into the generator housing (5).

5. A piston energy release mechanism in a supercritical carbon dioxide projection device according to claim 1, wherein the high pressure medium is a gas or a liquid.

6. The piston energy release mechanism in a supercritical carbon dioxide emission device according to claim 1, wherein one end of the energy emission port is communicated with the first cavity, and the other end of the energy emission port is connected with an air outlet pipe (10), and the air outlet pipe (10) is used for being communicated with an inlet of a gas gun.

7. A piston energy release mechanism in a supercritical carbon dioxide emission device according to claim 1, characterized in that the pressurizing assembly comprises a high pressure pump, the outlet of which communicates with the second valve chamber (14) via an inflation line (16).

8. A piston energy release mechanism in a supercritical carbon dioxide projection device according to claim 1, wherein the area of the large piston is 5-9 times the area of the small piston.