A decompression electric explosion valve

Abstract

The present invention provides a decompression electric explosion valve, comprising: a housing assembly, a piston, a retaining ring, a decompression pipeline device, and an igniter. The piston is installed inside the housing assembly, and the piston tail is fixed by a retaining ring to prevent the piston and the housing assembly from moving relative to each other. The igniter is installed at the tail end of the housing assembly. The housing assembly comprises: a housing and a diaphragm. During operation, the igniter pushes the piston to break through the diaphragm, allowing the fluid to enter the interior of the housing. The decompression pipeline device comprises: a steel ball, a spring, a fixing frame, a connecting rod, a baffle, and a decompression housing. When the fluid pushes the steel ball at a certain pressure, the steel ball and the baffle are linked, so that a part of the fluid passes through the steel ball and the baffle into the inner cavity of the decompression pipeline housing. The greater the fluid flow rate, the smaller the amount of fluid entering, the output pressure decreases, and the decompression effect is achieved; when the fluid flow rate slows down, the amount of fluid increases, the output pressure increases, and the pressure control effect is achieved. The present invention has the characteristics of simple structure, good economy, small size, light weight, etc.

Description

Technical Field

[0001] The invention relates to the technical field of aerospace power devices, and in particular to a decompression type electric explosion valve. Background Art

[0002] With the development of the aerospace field, higher requirements are placed on aerospace power systems. Nowadays, aerospace power systems are developing towards miniaturization and lightweight. However, the current aerospace power systems are too large, and the performance of aerospace power units is often poor due to their large size and mass. At the same time, there are too few combined and lightweight devices in aerospace power systems, and the device structure is complex, and the design, production and processing steps are complicated, resulting in poor manufacturing economy. Summary of the invention

[0003] The present invention aims at the above problems existing in the prior art and provides a decompression electric explosion valve, which solves the problems of large size and complex structure of the electric explosion valve in the aerospace power system in the prior art.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A decompression electric explosion valve comprises: a shell assembly, a piston, a decompression pipeline device and an igniter; the shell assembly outlet is fixedly connected to the decompression pipeline device, the piston is placed inside the shell assembly, and the igniter is installed at the rear end of the shell assembly.

[0006] The shell assembly comprises a shell and a diaphragm, and the diaphragm is fixed at the front end of the shell.

[0007] The front end of the piston is placed on the diaphragm, and the rear end of the piston is fixed inside the shell by a clamping ring.

[0008] The decompression pipeline device includes a steel ball, a spring, a fixing frame, a connecting rod, a baffle, a decompression housing and a flip axis support rod. The decompression housing has a stepped structure. The fixing frame is fixedly installed in the decompression housing. The tail end of the spring is fixed on the fixing frame to fix the tail end of the spring. The head end of the spring is connected to the steel ball. The spring squeezes the steel ball at the front step of the decompression housing. One end of the connecting rod is connected to the steel ball, and the other end of the connecting rod passes through the fixing frame and is connected to the lower and middle part of the baffle. The baffle is movably installed in the decompression housing through the flip axis support rod.

[0009] The steel ball is provided with a through hole, and a sealing rubber ring is provided at the contact position between the steel ball and the front step of the decompression housing.

[0010] A groove is arranged on the circumferential surface of the baffle, and a sealing rubber ring is embedded in the groove.

[0011] The igniter is sealed at the rear end of the housing assembly through a gasket.

[0012] Beneficial effects of the present invention:

[0013] The decompression electric explosion valve device of the present invention has the characteristics of simple structure, good economy, small size, light weight, etc. By integrating the fluid decompression device into the electric explosion valve, the space and mass occupancy of the aerospace power device can be greatly reduced.

[0014] The pressure reducing pipeline device drives the steel ball and spring through the fluid's own pressure, driving the baffle to move, thereby controlling the output fluid flow rate and flow, and playing a role in pressure reduction and pressure control.

[0015] The decompression electric explosion valve device can be applied to most of the fluids in aerospace power plants, and has a wide applicable pressure range and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a decompression electric explosion valve according to a specific embodiment of the present invention.

[0017] Figure 2 The present invention is a cross-sectional view of a decompression type electric explosion valve according to a specific embodiment of the present invention.

[0018] Figure 3 It is a cross-sectional view of a housing assembly according to a specific embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the piston structure of a specific embodiment of the present invention.

[0020] Figure 5 It is a cross-sectional view of a pressure reducing pipeline device according to a specific embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the combined structure of a baffle, a flip axis support rod and a rubber ring in a pressure reducing pipeline device according to a specific embodiment of the present invention.

[0022] Figure 7 It is a cross-sectional view of a connecting rod in a pressure reducing pipeline device according to a specific embodiment of the present invention.

[0023] Figure 8 It is a cross-sectional view of a steel ball in a pressure reducing pipeline device according to a specific embodiment of the present invention.

[0024] Fig. 9 It is a schematic diagram of the structure of a fixing frame in a pressure reducing pipeline device according to a specific embodiment of the present invention.

[0025] In the figure, 1. housing assembly, 2. piston, 3. pressure reducing pipeline device, 4. retaining ring, 5. igniter, 6. housing, 7. diaphragm, 8. steel ball, 9. spring, 10. fixing frame, 11. connecting rod, 12. baffle, 13. pressure reducing housing, 14. flip axis support rod, 15. rubber ring, 16. gasket. DETAILED DESCRIPTION

[0026] The invention is carefully interpreted with reference to the accompanying drawings in the specification.

[0027] like Figure 1 , Figure 2 As shown, a decompression electric explosion valve comprises: a housing assembly 1, a piston 2, a decompression pipeline device 3, a clamp ring 4, and an igniter 5. The piston 2 is placed inside the housing assembly 1 and fixed by the clamp ring 4, and the decompression pipeline device 3 is installed at the outlet of the housing assembly 1. The igniter 5 is installed at the rear end of the housing assembly 1 and is sealed by a gasket 16. The igniter ignites and pushes the piston, cuts off the diaphragm, opens the electric explosion valve, and allows the fluid to enter the decompression pipeline device.

[0028] like Figure 3 The housing assembly 1 shown includes: a housing 6 and a diaphragm 7, wherein the diaphragm 7 is fixed to the front end of the housing 6. The front end of the piston 2 is pressed against the diaphragm 7, and the rear end of the piston 2 is fixed in the housing 6 by the retaining ring 4.

[0029] like Figure 5 The pressure reducer pipeline device 3 shown comprises: a steel ball 8, a spring 9, a fixing frame 10, a connecting rod 11, a baffle 12, a pressure reducing housing 13, a flip axis support rod 14 and a rubber ring 15. The pressure reducing housing is in a stepped structure, the fixing frame 10 is fixedly mounted in the pressure reducing housing 13, the tail end of the spring 9 is fixed on the fixing frame 10 to fix the tail end of the spring 9, the head end of the spring 9 is connected to the steel ball 8, the spring 9 squeezes the steel ball 8 at the front step of the pressure reducing housing 13, one end of the connecting rod 11 is connected to the steel ball 8, the other end of the connecting rod 11 passes through the central positioning hole of the fixing frame 10 and is connected to the middle and lower part of the baffle 12, the fixing frame realizes the limiting effect on the connecting rod 11, the connecting rod ensures that the steel ball moves along the axis direction of the pressure reducing housing when moving, the baffle 12 is movably mounted in the pressure reducing housing 13 through the flip axis support rod 14, and the baffle flip axis support rod plays the role of flipping the baffle; the movement of the steel ball controls the opening and closing size between the baffle and the pressure reducing housing, controls the fluid flow rate and flow rate, and thus controls the output pressure.

[0030] like Figure 5 In the decompression pipeline device 3 shown, there is a through hole on the steel ball 8, which is used to allow the fluid to enter the inner cavity of the decompression shell through the steel ball when the fluid output pressure is too low to push the steel ball to move; at the same time, there is a sealing rubber ring at the contact position between the steel ball 8 and the front step of the decompression shell 13, and there is a groove on the circumferential surface of the baffle 12, in which a sealing rubber ring 15 is placed.

[0031] This embodiment is aimed at high-pressure fluid, which needs to be released from the storage device when in use. When the fluid enters the decompression electric explosion valve from the storage device, the diaphragm 7 in the decompression electric explosion valve plays a sealing role. When the fluid is released, the igniter 5 works, pushing the piston 2 to cut the diaphragm 7, so that the fluid enters the decompression pipeline device 3. The fluid pushes the steel ball 8 with a certain pressure, so that the steel ball 8 moves along the central axis of the decompression housing 13 toward the fixed frame 10. At this time, the steel ball 8 drives the connecting rod 11 to move along the central axis of the decompression housing 13 toward the fixed frame 10. One end of the connecting rod 11 pushes the lower end of the baffle 12 to control the opening size of the baffle 12 and the decompression housing 13. When the fluid pressure and flow rate are greater, the opening is smaller, and the amount of high-pressure fluid entering the inner cavity through the baffle 12 is reduced; when the fluid pressure and flow rate are smaller, the opening is larger, and the amount of high-pressure fluid entering the inner cavity through the baffle 12 is increased; when the fluid pressure is too low, the fluid cannot push the steel ball 8 to move, and the fluid enters the inner cavity of the pressure reducing housing 13 through the through hole in the steel ball 8, thereby controlling the output flow and pressure, and playing the role of reducing pressure and controlling pressure.

[0032] The device of this invention can effectively reduce the pressure and control the output of high-pressure fluid, and has the characteristics of small size and light weight. At the same time, the decompression electric explosion valve device has a simple structure, high reliability and economy, and provides a new solution for the decompression and pressure control output of high-pressure fluid in aerospace power devices.

[0033] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. The above is a specific embodiment of the present invention and the technical principles used. Any equivalent transformation based on the technical solution of the present invention belongs to the protection scope of the present invention.

Claims

1. A decompression electric explosion valve, characterized in that include: A housing assembly (1), a piston (2), a pressure reducing pipeline device (3) and an igniter (5); the outlet of the housing assembly (1) is fixedly connected to the pressure reducing pipeline device (3), the piston (2) is placed inside the housing assembly (1), and the igniter (5) is installed at the rear end of the housing assembly (1); The housing assembly (1) comprises a housing (6) and a diaphragm (7), wherein the diaphragm (7) is fixed to the front end of the housing (6); The front end of the piston (2) is placed on the diaphragm (7), and the rear end of the piston (2) is fixed inside the housing by a clamping ring (4); The decompression pipeline device (3) comprises a steel ball (8), a spring (9), a fixing frame (10), a connecting rod (11), a baffle (12), a decompression housing (13) and a flip axis support rod (14); the decompression housing is in a stepped structure; the fixing frame (10) is fixedly mounted in the decompression housing (13); the tail end of the spring (9) is fixed on the fixing frame (10) to fix the tail end of the spring (9); the head end of the spring (9) is connected to the steel ball (8); the spring (9) presses the steel ball (8) at the front step of the decompression housing (13); one end of the connecting rod (11) is connected to the steel ball (8); the other end of the connecting rod (11) passes through the fixing frame (10) and is connected to the middle and lower part of the baffle (12); the baffle (12) is movably mounted in the decompression housing (13) via the flip axis support rod (14); The steel ball (8) has a through hole, and a sealing rubber ring is provided at the contact position between the steel ball (8) and the front step of the decompression housing (13).

2. A decompression electric explosion valve according to claim 1, characterized in that The baffle (12) has a groove on its circumferential surface, and a sealing rubber ring (15) is embedded in the groove.

3. A decompression electric explosion valve according to claim 1, characterized in that The igniter (5) is sealed at the rear end of the housing assembly (1) via a gasket (16).

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