A gas source device for storing TMA solution

Abstract

A gas source device for storing TMA solution, relating to the field of hydraulic pneumatics, includes a storage cylinder, a pressure reducing assembly, and a high-pressure gas cylinder. The inner cavity of the storage cylinder is divided into a liquid storage chamber and a gas storage chamber by a piston. The top of the storage cylinder has a release port and a filling port connecting to the liquid storage chamber, and the release port and filling port are respectively equipped with a first open valve and a filling valve. The bottom of the storage cylinder has a gas supply port connecting to the gas storage chamber. The high-pressure gas cylinder has an exhaust port with a second open valve. The exhaust port is connected to the pressure reducing assembly via a gas supply branch pipe and is correspondingly connected to the gas supply port of the storage cylinder. A pressure detector and a safety valve are installed on the gas supply branch pipe between the storage cylinder and the pressure reducing assembly. An air replacement assembly for replacing the air in the gas supply branch pipe and the gas storage chamber with protective gas is installed on the gas supply branch pipe between the pressure reducing assembly and the high-pressure gas cylinder. This gas source device releases TMA solution pneumatically, allowing for effective and accurate observation of the liquid flow trajectory curve.

Description

Technical Field

[0001] This invention relates to the field of hydraulic pneumatics, and in particular to a gas source device for storing TMA solution. Background Technology

[0002] As is generally known, TMA usually refers to the organoaluminum compound trimethylaluminum, and TMA solution is a solution containing trimethylaluminum, commonly used in aircraft ignition systems. During ignition, TMA reacts with oxygen to generate a high-temperature flame, thereby igniting the main engine fuel. This type of ignition system is typically used in certain types of engines. However, because TMA produces a strong flame when it comes into contact with oxygen in the air, it requires extreme caution in handling and use.

[0003] Abroad, the technology for storing and pneumatically releasing TMA solutions has been put into practical use; currently in China, although there is technology for storing TMA solutions, the application of the pneumatic release function is still blank and has not been widely used, thus preventing in-depth research on liquid flow trajectories. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve the existing technical problems, the present invention discloses a gas source device for storing TMA solution. By releasing TMA solution pneumatically, the liquid flow trajectory curve can be effectively and accurately observed.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A gas source device for storing TMA solution includes a storage cylinder, a pressure reducing assembly, and a high-pressure gas cylinder for storing protective gas. The inner cavity of the storage cylinder is divided into a liquid storage chamber and a gas storage chamber by a piston, which are not interconnected. The piston can move axially along the storage cylinder based on the pressure difference between the liquid storage chamber and the gas storage chamber. The top of the liquid storage cylinder has a release port and a filling port connecting to the liquid storage chamber. The release port and the filling port are respectively equipped with a first open valve and a filling valve. The bottom of the storage cylinder has a gas supply port connecting to the gas storage chamber. The high-pressure gas cylinder has an exhaust port with a second open valve. The exhaust port is connected to the pressure reducing assembly via a gas supply branch pipe and is correspondingly connected to the gas supply port of the storage cylinder. A pressure detector and a safety valve are installed on the gas supply branch pipe between the storage cylinder and the pressure reducing assembly. An air replacement assembly for replacing the air in the gas supply branch pipe and the gas storage chamber with protective gas is installed on the gas supply branch pipe between the pressure reducing assembly and the high-pressure gas cylinder.

[0007] Furthermore, the air replacement assembly includes a replacement air inlet pipe and a replacement air outlet pipe, both of which are connected to the air supply branch pipe. The replacement air inlet pipe is connected to a replacement air source, and an air inlet valve and an air outlet valve are respectively installed on the replacement air inlet pipe and the replacement air outlet pipe.

[0008] Furthermore, the gas source device for storing TMA solution includes the following steps: S1, open the outlet valve of the displacement outlet pipe to bring the gas storage chamber to atmospheric pressure; then open the filling valve to fill the liquid storage chamber of the storage cylinder with TMA solution, and then close the filling valve; S2, inject protective gas into the high-pressure gas cylinder to form a high pressure greater than that of the liquid storage chamber; S3, close the outlet valve of the displacement outlet pipe, open the inlet valve of the displacement inlet pipe, fill the gas supply branch pipe and the gas storage chamber with 0.8-1.2 MPa of protective gas, then close the inlet valve and open the outlet valve to release the pressure close to atmospheric pressure, completing one gas displacement; after three to four gas displacements, close the outlet valve; S4, open the second open valve and adjust the pressure reducing component so that the pressure detector detects that the required release pressure has been reached; S5, open the first open valve to quickly release the TMA solution in the storage cylinder.

[0009] Furthermore, the protective gas is nitrogen.

[0010] Furthermore, the outer wall of the piston component is provided with a sealing ring groove with a sealing ring, and the outer wall of the piston component and the inner wall of the storage cylinder are slidably sealed by the sealing ring.

[0011] Furthermore, the piston component has an air storage groove forming an air storage chamber at the center of its bottom surface.

[0012] Furthermore, the storage cylinder includes a lower cover and an upper cylinder cover fixed to the middle of the upper cover surface of the lower cover. The lower cover surface of the lower cover is detachably connected to a base, and the bottom end of the base is fixed to a mounting plate.

[0013] Furthermore, the pressure reducing assembly includes a primary pressure reducing valve and a secondary pressure reducing valve connected in series.

[0014] Furthermore, the high-pressure gas cylinder is also equipped with an inflation structure.

[0015] Furthermore, both the first and second opening valves are configured as automatic control valves.

[0016] By employing the technical solution described above, the present invention has the following beneficial effects:

[0017] This invention discloses a gas source device for storing TMA solution. It utilizes a high-pressure gas cylinder for long-term storage of protective gas, a liquid storage chamber in the storage cylinder for filling and preserving the TMA solution, an air replacement assembly for replacing the protective gas in the gas delivery branch pipe to ensure safe operation, a pressure reducing assembly and a safety valve for pressure reduction and overpressure relief protection, and gas released from the high-pressure cylinder to drive a piston in the storage cylinder for rapid release of the TMA solution. This invention ensures the ease of operation and safety of the entire gas source device, fills a gap in domestic TMA solution pneumatic release technology, and allows for effective and accurate observation of the liquid flow trajectory curve, facilitating further research and optimization. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the storage cylinder.

[0020] Figure 3 This is a schematic diagram of the structure of the high-pressure gas cylinder;

[0021] Figure 4 This is a schematic diagram of the structure of the pressure-reducing component.

[0022] In the diagram: 1. Storage cylinder; 101. Upper cylinder cover; 102. Lower cover; 103. Gas inlet; 2. Filling valve; 3. First open valve; 4. High-pressure gas cylinder; 401. Filling structure; 5. Second open valve; 6. Gas supply branch pipe; 7. Pressure detector; 8. Safety valve; 9. Pressure reducing assembly; 901. Primary pressure reducing valve; 902. Secondary pressure reducing valve; 10. Air replacement assembly; 11. Base; 12. Mounting plate; 13. Piston; 14. Sealing ring. Detailed Implementation

[0023] The technical solution of the present invention will now be described with reference to the accompanying drawings of the embodiments of the present invention. In the description, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicating directions or positional relationships, are only used to correspond to the accompanying drawings of the present invention for the purpose of facilitating the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0024] Combined with appendix Figure 1-4The gas source device for storing TMA solution includes a storage cylinder 1, a pressure reducing assembly 9, and a high-pressure gas cylinder 4 for storing a protective gas. The protective gas must not react with the TMA solution; nitrogen is typically used. The inner cavity of the storage cylinder 1 is divided into a liquid storage chamber and a gas storage chamber by a piston 13, which are not interconnected. The piston 13 can move axially along the storage cylinder 1 under the pressure difference between the liquid and gas storage chambers. Releasing the TMA solution requires direct pushing by the piston 13. The piston can be adjusted as needed. The outer wall of piston component 13 is provided with a sealing ring groove with a sealing ring 14. The outer wall of piston component 13 and the inner wall of storage cylinder 1 are slidably sealed by the sealing ring 14. Multiple sealing ring grooves can be arranged side by side, which can prevent the TMA solution in the liquid storage chamber from leaking into the gas storage chamber without affecting the movement of piston component 13. The top of the liquid storage cylinder is provided with a release port and a filling port that communicate with the liquid storage chamber. The release port and the filling port are respectively equipped with a first opening valve 3 and a filling valve 2. By opening the filling valve 2, TMA solution is filled into the liquid storage chamber of storage cylinder 1. The storage cylinder 1 has an air inlet 103 at its bottom end that connects to the air storage chamber. Depending on the requirements, the storage cylinder 1 includes a lower cover 102 and an upper cover 101 fixed to the center of the upper cover surface of the lower cover 102. Specifically, the storage cylinder 1 and the lower cover 102 are tightly connected by a flange using multiple screws arranged around the upper cover 101, and the contact surfaces are sealed with gaskets. A base 11 is detachably connected to the lower cover surface of the lower cover 102. The base 11 structure must expose the air inlet 103 to facilitate connection of the air supply support. The bottom of the tube 6 is fixed to the mounting plate 12, and the mounting plate 12 is fixed to the outside to prevent it from moving due to the release action; in addition, the bottom surface of the piston 13 is provided with an air storage groove that forms an air storage chamber, to prevent the piston 13 from directly touching the air inlet 103, resulting in too small an initial contact area and insufficient release thrust, and also to prevent the piston 13 from jamming due to unbalanced thrust. Of course, the air storage chamber can also be formed by fixing a limiting sleeve to the upper cover of the lower cover 102 and inserting it into the upper cylinder cover 101.

[0025] The high-pressure gas cylinder 4 is equipped with an exhaust port with a second open valve 5, which controls the opening and closing of the exhaust port. Depending on the needs, the high-pressure gas cylinder 4 also has an inflation structure 401, typically a capped inflation port, used to fill the high-pressure gas cylinder 4 with protective gas. Furthermore, both the first open valve 3 and the second open valve 5 are automatic control valves for easy remote control. The exhaust port is connected in series with a pressure reducing assembly 9 via a gas supply branch pipe 6, and then correspondingly connected to the gas supply port 103 of the storage cylinder 1. The pressure reducing assembly 9 includes a first-stage pressure reducing valve 901 and a second-stage pressure reducing valve 902 connected in series, precisely controlling the required pressure through two-stage pressure reduction. Gas supply between the storage cylinder 1 and the pressure reducing assembly 9... A pressure detector 7 and a safety valve 8 are installed on the branch pipe 6. The pressure detector 7 is used to detect whether the pressure of the gas supply branch pipe 6 reaches the requirement after feedback pressure reduction. The safety valve 8 plays an overpressure protection role. An air replacement assembly 10 is installed on the gas supply branch pipe 6 between the pressure reducing assembly 9 and the high-pressure gas cylinder 4 to replace the air in the gas supply branch pipe 6 and the gas storage chamber with protective gas to ensure safe use. As needed, the air replacement assembly 10 includes a replacement air inlet pipe and a replacement air outlet pipe, which are connected to the gas supply branch pipe 6 respectively. The replacement air inlet pipe is connected to a replacement gas source. An air inlet valve and an air outlet valve are installed on the replacement air inlet pipe and the replacement air outlet pipe respectively.

[0026] The gas source device for storing TMA solution according to the present invention includes the following steps:

[0027] Step 1: Open the outlet valve of the displacement outlet pipe to bring the gas storage chamber to normal pressure; then open the filling valve 2 to fill the liquid storage chamber of the storage cylinder 1 with TMA solution, and then close the filling valve 2.

[0028] Step 2: Inject protective gas into high-pressure cylinder 4 to create a high pressure greater than that of the liquid storage chamber;

[0029] Step 3: Close the outlet valve of the replacement outlet pipe, open the inlet valve of the replacement inlet pipe, and fill the gas supply branch pipe 6 and the gas storage chamber with 0.8-1.2 MPa of protective gas. Then close the inlet valve and open the outlet valve to release the pressure close to atmospheric pressure, thus completing one gas replacement. After performing three to four gas replacements, close the outlet valve.

[0030] Step 4: Open the second open valve 5 and adjust the pressure reducing component 9 so that the pressure detector 7 detects that the required pressure has been released.

[0031] Step 5: Open the first open valve 3, and under the action of the gas-driven piston 13, the TMA solution in the storage cylinder 1 is quickly released.

[0032] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims within this invention, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A method of using a gas source device for storing TMA solution, characterized in that: The gas source device includes a storage cylinder (1), a pressure reducing assembly (9), and a high-pressure gas cylinder (4) for storing protective gas. The inner cavity of the storage cylinder (1) is divided into a liquid storage chamber and a gas storage chamber by a piston (13), which are not connected to each other. The piston (13) can move along the axial direction of the storage cylinder (1) due to the pressure difference between the liquid storage chamber and the gas storage chamber. The top of the storage cylinder is provided with a release port and a filling port that connect to the liquid storage chamber. The release port and the filling port are respectively equipped with a first open valve (3) and a filling valve (2). The bottom of the storage cylinder (1) is provided with a gas supply port (103) that connects to the gas storage chamber. The high-pressure gas cylinder (4) is provided with an exhaust port with a second open valve (5). The exhaust port is connected in series through a gas supply branch pipe (6). After the pressure reducing assembly (9), it is connected to the air supply port (103) of the storage cylinder (1); a pressure detector (7) and a safety valve (8) are installed on the air supply branch pipe (6) between the storage cylinder (1) and the pressure reducing assembly (9); an air replacement assembly (10) for replacing the air in the air supply branch pipe (6) and the storage chamber with protective gas is installed on the air supply branch pipe (6) between the pressure reducing assembly (9) and the high-pressure gas cylinder (4); the air replacement assembly (10) includes a replacement air inlet pipe and a replacement air outlet pipe, both of which are connected to the air supply branch pipe (6); the replacement air inlet pipe is connected to a replacement gas source; an air inlet valve and an air outlet valve are installed on the replacement air inlet pipe and the replacement air outlet pipe, respectively; The method of using the gas source device for storing TMA solution is as follows: S1. Open the outlet valve of the displacement outlet pipe to make the gas storage chamber normal pressure; then open the filling valve (2) to fill the liquid storage chamber of the storage cylinder (1) with TMA solution, and then close the filling valve (2). S2. Inject protective gas into the high-pressure gas cylinder (4) to form a high pressure greater than that of the liquid storage chamber; S3. Close the outlet valve of the replacement outlet pipe, open the inlet valve of the replacement inlet pipe, and fill the gas supply branch pipe (6) and the gas storage chamber with 0.8 to 1.2 MPa of protective gas. Then close the inlet valve and open the outlet valve to release the pressure close to the normal pressure to complete one gas replacement. After three to four gas replacements, close the outlet valve. S4. Open the second open valve (5) and adjust the pressure reducing component (9) so that the pressure detector (7) detects that the required pressure has been released; S5. Open the first open valve (3) to quickly release the TMA solution in the storage cylinder (1).

2. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: The protective gas is nitrogen.

3. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: The outer wall of the piston (13) is provided with a sealing ring groove with a sealing ring (14), and the outer wall of the piston (13) and the inner wall of the storage cylinder (1) are slidably sealed by the sealing ring (14).

4. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: The piston (13) has an air storage groove forming an air storage chamber at the center of its bottom surface.

5. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: The storage cylinder (1) includes a lower cover (102) and an upper cover (101) fixed to the middle of the upper cover surface of the lower cover (102). The lower cover surface of the lower cover (102) is detachably connected to a base (11), and the bottom end of the base is fixed to a mounting plate (12).

6. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: The pressure reducing assembly (9) includes a primary pressure reducing valve (901) and a secondary pressure reducing valve (902) connected in series.

7. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: The high-pressure gas cylinder (4) is also equipped with an inflation structure (401).

8. The method of using the gas source device for storing TMA solution according to claim 1, characterized in that: Both the first open valve (3) and the second open valve (5) are set as automatic control valves.

Images