A high-pressure nitrogen storage unit capable of quick replacement and release

Abstract

The utility model relates to a high pressure nitrogen storage unit of quick replacement and release belongs to control mechanism design field. When solenoid valve and high pressure nitrogen storage unit are installed in device, the sealing link is many, and the leakage detection workload is big, and the maintainability reduces. The utility model shell still has the gas outlet hole of circumferential distribution, the valve seat has the central hole and the exhaust hole in the axial direction, and the central hole and the exhaust hole are communicated at the bottom, and the valve seat still has the ring groove of the communication gas outlet hole and exhaust hole, the pilot valve is installed in the central hole, and the pilot valve bottom end can be seen at the valve seat bottom, and the pilot valve has the annular boss outward in the rod part, and the annular boss is evenly distributed with gas passage on the circumference, and the exhaust valve is installed in the exhaust hole, and includes the valve rod with T type shaft section. Greatly reduce device air -tight assembly workload, improve production efficiency, have important significance to external field maintenance.

Description

Technical Field

[0001] This utility model relates to a high-pressure nitrogen storage unit that can be quickly replaced and released, belonging to the field of control mechanism design. Background Technology

[0002] Currently, the clean energy source used by the launch device is mainly high-pressure nitrogen, which is stored in high-pressure nitrogen cylinders and controlled by solenoid valves integrated into the energy storage device. However, this design has the following drawbacks:

[0003] 1. When the solenoid valve and the high-pressure nitrogen storage unit are installed in the device, the electrical and mechanical interfaces are also integrated on the high-pressure nitrogen storage unit. There are many sealing links, the workload of leak detection is large, and when a gas leakage fault occurs, the fault location and repair take a long time, resulting in reduced maintainability.

[0004] 2. The solenoid valve is a precision component. If it malfunctions, it needs to be removed from the high-pressure nitrogen storage unit, which results in high repair costs. Utility Model Content

[0005] This invention relates to a high-pressure nitrogen storage unit that can be quickly replaced and released, enabling independent use of the high-pressure nitrogen storage unit, facilitating disassembly / replacement and maintenance of the device, and improving the device's performance.

[0006] This utility model proposes a high-pressure nitrogen storage unit that can be quickly replaced and released, including an annular shell with an internal cavity, an inflation valve and an external thread at one end of the shell, and a valve seat sealed in the opening at the other end. The shell also has circumferentially distributed vent holes. The valve seat has a central hole and an exhaust hole in the axial direction, which are connected at the bottom. The valve seat also has an annular groove connecting the exhaust hole and the vent hole. A pilot valve is installed in the central hole, and the bottom end of the pilot valve is visible at the bottom of the valve seat. The pilot valve has an outward annular boss on its stem, and gas channels are evenly distributed on the circumference of the annular boss. A second spring applies force to the annular boss to seal the central hole at the upper end of the pilot valve. An exhaust valve is installed in the exhaust hole and includes a valve stem with a T-shaped axial section. A first spring applies force to the bottom T-shaped step surface to seal the exhaust hole at the top of the valve stem.

[0007] Advantageously, the central hole has an inward annular step, with one end of the second spring abutting against the step surface of the annular boss and the other end abutting against the step surface of the annular step.

[0008] Advantageously, the bottom opening of the annular step has a conical surface, and the upper end of the pilot valve has a conical structure, which presses against the upper opening of the annular step under the action of the second spring.

[0009] Advantageously, the outer end face of the conical structure also has a slot.

[0010] Advantageously, the vent includes a large-diameter portion and a small-diameter portion, the upper opening of the large-diameter portion having a conical surface, and the vent valve at the end of the valve stem mates with the conical surface.

[0011] Advantageously, one end of the first spring rests against the T-shaped step surface, and the other end rests against the end face of the large-diameter portion of the vent.

[0012] Advantageously, the large-diameter portion of the exhaust port has the annular groove.

[0013] Advantageously, the valve seat is sealed at the bottom of the central hole by an inner plug, and the bottom of the pilot valve is in the central hole of the inner plug; the valve seat is sealed at the bottom of the vent hole by an outer plug.

[0014] Advantageously, the area of ​​the bottom of the T-shaped step of the exhaust valve is larger than the top area of ​​the conical surface at the end of the valve stem.

[0015] Advantageously, the housing also has a pressure display device.

[0016] This invention relates to a rapidly replaceable and release high-pressure nitrogen storage unit for storing high-pressure nitrogen. The storage unit is quick to install and remove, and can be filled with high-pressure nitrogen directly on-site or installed after being filled at the site. The high-pressure nitrogen storage unit is activated by an external force that drives a pilot valve, which in turn opens an exhaust valve to rapidly release the high-pressure nitrogen, which then enters the launching device to complete the object ejection function.

[0017] Beneficial effects: It provides a quick-detachable independent unit for aviation equipment. Compared with existing nitrogen storage devices, this high-pressure nitrogen storage unit can be assembled and inspected independently, greatly reducing the workload of airtight assembly and improving production efficiency; it can be replaced in the field, which is of great significance for field maintenance; in field conditions where high-pressure nitrogen filling is not possible, the pre-filled high-pressure nitrogen storage unit can be used as a consumable, similar to the application of bombs, which significantly improves the environmental adaptability of the equipment. Attached Figure Description

[0018] Figure 1 This is a longitudinal sectional view of a high-pressure nitrogen storage unit;

[0019] Figure 2 This is a schematic diagram showing the state after the exhaust valve is opened.

[0020] Figure 3 This is an end view of the pilot valve;

[0021] Figure 4 This is a side view of the pilot valve;

[0022] Figure 5 This is a schematic diagram showing the direction of high-pressure gas discharge from the valve seat.

[0023] Figure 6 This is a schematic diagram of the installation process for Example 1;

[0024] Figure 7 This is a schematic diagram of the installation in Example 2.

[0025] 1-Outer casing, 2-Valve seat, 3-Exhaust valve, 4-Inflation valve, 5-Pressure display device, 6-Pilot valve, 7-First spring, 8-Inner plug, 9-Outer plug, 10-Second spring, 11-Combustion chamber, 12-Solenoid valve, 13-Cylinder mounting base, 14-High-pressure nitrogen storage unit Detailed Implementation

[0026] like Figure 1 The high-pressure nitrogen storage unit consists of a sealed cavity formed by an outer shell 1 and a valve seat 2. A pilot valve 6 and two exhaust valves 3 are installed on the valve seat 2. The exhaust valves 3 are locked by a first spring 7, and the pilot valve 6 is locked by a second spring 10. During launch... Figure 2 As shown, a small force is applied to the pilot valve 6, releasing high-pressure nitrogen gas. After passing through the central hole, the nitrogen gas reaches the bottom of the pilot valve 6, pushing the two exhaust valves 3 inward. The high-pressure nitrogen gas then passes through the exhaust port and the annular groove on the valve seat 2 before being ejected from the circumferentially arranged vent holes on the outer casing 1, completing the release. The first spring 7 is used to seal and lock the exhaust valve 3, while the inner plug 8 and the outer plug 9 are used to seal the valve seat. One end of the outer casing 1 has an internal thread for connecting the valve seat 2, and the other end has an external thread for connecting devices, facilitating disassembly. The end face of this end is equipped with an inflation valve 4, a pressure display device 5, and a hexagonal hole for disassembly, used for high-pressure nitrogen filling, pressure display, and disassembly.

[0027] Pilot valve 6 Figure 3 and 4 As shown, the rod has a gas passage. After passing through the gap between the pilot valve 6 and the central hole, the high-pressure gas enters the bottom cavity through the gas passage, and then enters the bottom of the exhaust valve 3 through the transverse passage at the bottom of the valve seat 2, pushing the exhaust valve 3 inward to open. After the exhaust valve 3 is opened, the high-pressure gas is released through the vent hole on the valve seat 2.

[0028] The high-pressure nitrogen inside the high-pressure nitrogen storage unit, after the exhaust valve 3 is opened, is discharged through the following path on the valve seat 2: Figure 5 As shown.

[0029] Implementation Method 1:

[0030] like Figure 6The installation and working principle of this high-pressure nitrogen storage unit are as follows: Solenoid valve 12 is installed at the rear of combustion chamber 11 of device 10. The valve core of solenoid valve 12 is in contact with the bottom of pilot valve 6. After solenoid valve 12 is energized, the valve core of solenoid valve 12 directly pushes pilot valve 6 forward, releasing high-pressure gas into the bottom of exhaust valve 3, opening exhaust valve 3, releasing the stored high-pressure gas into the inner cavity of combustion chamber 11, and completing the release operation.

[0031] Implementation Method Two:

[0032] like Figure 7 As shown, an electromagnet 12 and a high-pressure nitrogen storage unit 14 are installed on the gas cylinder mounting base 13. When the electromagnet 12 is energized, it opens the gas valve of the high-pressure nitrogen storage unit 14, releasing the stored high-pressure gas, which then enters the ejection piston through a pipeline to complete the ejection function. This is suitable for rail-launched devices or push-off type launch devices.

Claims

1. A high-pressure nitrogen storage unit that can be quickly replaced and released, characterized in that: The device includes an annular shell (1) with an internal cavity, an inflation valve (4) and an external thread at one end of the shell (1), and a valve seat (2) sealed in the opening at the other end. The shell (1) also has circumferentially distributed air outlets. The valve seat (2) has a central hole and an exhaust hole in the axial direction, which are connected at the bottom. The valve seat (2) also has an annular groove connecting the air outlet and the exhaust hole. A pilot valve (6) is installed in the central hole. The bottom end of the pilot valve (6) is visible at the bottom of the valve seat (2). The pilot valve (6) has an outward annular boss on the stem. Gas channels are evenly distributed on the circumference of the annular boss. The upper end of the pilot valve (6) is sealed in the central hole by the force applied to the annular boss by the second spring (10). An exhaust valve (3) is installed in the exhaust hole and includes a valve stem with a T-shaped axial section. The top of the valve stem is sealed in the exhaust hole by the force applied to the bottom T-shaped step surface by the first spring (7).

2. The high-pressure nitrogen storage unit according to claim 1, characterized in that: The central hole has an inwardly facing annular step, and one end of the second spring (10) abuts against the step surface of the annular boss, and the other end abuts against the step surface of the annular step.

3. The high-pressure nitrogen storage unit according to claim 2, characterized in that: The bottom opening of the annular step has a conical surface, and the upper end of the pilot valve (6) has a conical structure. Under the action of the second spring (10), the conical structure presses against the upper opening of the annular step.

4. The high-pressure nitrogen storage unit according to claim 3, characterized in that: The outer end face of the cone structure also has a slot.

5. The high-pressure nitrogen storage unit according to claim 1, characterized in that: The exhaust port includes a large-diameter portion and a small-diameter portion. The upper opening of the large-diameter portion has a conical surface, and the exhaust valve (3) is fitted with the conical surface at the end of the valve stem.

6. The high-pressure nitrogen storage unit according to claim 5, characterized in that: One end of the first spring (7) rests against the surface of the T-shaped step, and the other end rests against the end face of the large diameter part of the exhaust hole.

7. The high-pressure nitrogen storage unit according to claim 6, characterized in that: The large-diameter portion of the exhaust port has the annular groove.

8. The high-pressure nitrogen storage unit according to claim 1, characterized in that: The valve seat (2) is sealed at the bottom of the center hole by an inner plug (8), and the bottom of the pilot valve (6) is in the center hole of the inner plug (8); the valve seat (2) is sealed at the bottom of the vent hole by an outer plug (9).

9. The high-pressure nitrogen storage unit according to any one of claims 1-8, characterized in that: The area of ​​the bottom of the T-shaped step of the exhaust valve (3) is greater than the top area of ​​the conical surface at the end of the valve stem.

10. The high-pressure nitrogen storage unit according to any one of claims 1-8, characterized in that: The outer casing (1) also has a pressure display device (5).

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