Miniaturized large-drift-diameter redundant electric explosion valve

Abstract

A shell is of an electric explosion valve main body structure, a cross-shaped cavity and an exploder installation opening are formed in the shell, the rear side of the cross-shaped cavity communicates with the exploder installation opening through a kidney-shaped hole, an upper end through hole of the cross-shaped cavity is a medium outlet, and a lower end through hole of the cross-shaped cavity is used for installing a connecting nozzle; a converter is installed on a threaded hole in the rear end of the cross-shaped cavity, an electric exploder is installed on the converter, another electric exploder is installed on an exploder installation opening, a cutter and a piston are installed in the cross-shaped cavity, the piston is located at the tail end of the cutter, the end of the mouthpiece is inserted into a blind hole in the middle of the cutter, and a through hole is machined in the cutter. When the electric detonator is detonated, the piston and the cutter are pushed to cut off the mouthpiece, and the mouthpiece, the through hole of the cutter and the medium outlet form a through passage. The invention has the advantages of compact structure, high working stability, high generalization degree and wide application pressure range, ensures that a medium passage has no flow resistance, and is suitable for most media by adopting a large-drift-diameter design.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric explosion valves, and particularly relates to a small-sized large-drift redundant electric explosion valve which has no flow resistance to medium after being opened and is resistant to high and low temperatures. BACKGROUND

[0002] With the development of the engine field, higher requirements are put forward for valve products. At present, power products of engines are developing towards integration, economy, light weight, and miniaturization, and the sealing and opening of valve control fluid are realized through electric explosion valves to quickly open the passage.

[0003] At present, most electric explosion valves are single-electric initiator structures. In order to improve the opening reliability of the electric explosion valve, according to the use requirements, while reducing the weight, size and cost, and reducing the number of parts, the reliable opening of the electric explosion valve is realized. At the same time, according to the index requirements, the passage diameter and flow resistance need to be considered when the medium flows. The internal structure of the present electric explosion valve will affect the passage diameter and flow resistance, resulting in the obstruction of medium flow. At the same time, in the process of engine operation, the internal temperature will change greatly with the change of running time and external environment, and will experience high temperature and low temperature, which has a high requirement on the material in the electric explosion valve. The existing electric explosion valve mostly uses gaskets and rubber rings for sealing, and the non-metallic material will be affected by the temperature to affect the performance of the product, resulting in that the sealing property of the electric explosion valve cannot meet the requirements.

[0004] Some electric explosion valves are double-electric initiator structures, but the whole passage diameter is inconsistent after the cutting knife is cut off and opened, resulting in excessive flow resistance. SUMMARY

[0005] The technical problem solved by the application is to provide a small-sized large-drift redundant electric explosion valve, to provide a feasible device for the opening technology field of fluid passages, and to solve the problems of narrow use range, limited use environment, low reliability and large flow resistance of the traditional electric explosion valve.

[0006] The technical scheme adopted by the present application is: a miniaturized large-drift redundant electric detonation valve, comprising a shell, a connector, a cutter, a piston, a converter and an electric initiator, the shell is the main structure of the electric detonation valve, and a cross-shaped cavity and an initiator mounting port are arranged in the shell, the rear side of the cross-shaped cavity and the initiator mounting port are communicated through a waist hole, wherein the front end of the cross-shaped cavity is a blind hole, the rear end is a threaded hole, and the upper and lower ends are corresponding through holes, the upper end through hole of the cross-shaped cavity is a medium outlet, the lower end through hole is used for mounting the connector, the threaded hole at the rear end of the cross-shaped cavity is used for mounting the converter, the electric initiator is mounted on the converter, another electric initiator is mounted on the initiator mounting port, the two electric initiators are communicated with the cross-shaped cavity, the cutter and the piston are mounted in the cross-shaped cavity, the piston is located at the tail end of the cutter, the end of the connector is inserted into the middle blind hole of the cutter, and a through hole is processed on the cutter, after the electric initiator is detonated to push the piston and the cutter to cut off the connector, a through channel is formed between the connector, the through hole of the cutter and the medium outlet.

[0007] Preferably, a gasket groove is arranged at the rear end of the cross-shaped cavity and the initiator mounting port, and a sealing tooth is reserved on the gasket groove, which is used for sealingly arranging a gasket, the sealing tooth is a ring-shaped tapered protruding ring on the end face of the gasket groove, and the sealing tooth is located on a circle formed by the middle diameter of the end face of the gasket groove.

[0008] Preferably, the through channel is a straight channel with the same diameter.

[0009] Preferably, the cross-shaped cavity of the shell is a variable-diameter long blind hole between the front end and the rear end, which is used for placing the cutter, wherein the front part of the variable-diameter long blind hole has an inner tapered surface, and the middle part has a variable-diameter step, which is used for positioning and clamping the cutter after the cutter is moved into position.

[0010] Preferably, the connector is an interface of the electric detonation valve, the connector is connected with a flow channel, the connector has a blind hole, the middle part of the connector is a stepped outer wall used for welding with the shell, and the upper end of the connector has a weak ring groove.

[0011] Preferably, the cutter has an outer tapered surface at the front end, the cutter is moved under the action of the electric initiator, the outer tapered surface is in contact with the inner tapered surface of the long blind hole of the shell and is wedged, the cutter has a small hole at the front end, so that the cutter is wedged, and the front cavity of the cutter is connected with the medium flow channel, the rear part of the cutter has an outer tapered surface with a small angle, which is used for clamping at the variable-diameter step of the long blind hole of the shell after the cutter is moved, and the rear end of the cutter is provided with a threaded hole.

[0012] Preferably, the gasket is a metal gasket.

[0013] Preferably, the piston has an annular groove for arranging a rubber ring, and the rear part of the piston is provided with a threaded hole, which facilitates the installation of the piston and increases the detonation volume.

[0014] Preferably, the converter front end is provided with four convex points for preventing the inner piston of the electric explosion valve from blocking the igniter mounting port on the upper part of the rear end of the shell and the waist hole of the rear end of the shell when moving, the converter is provided with external threads for mounting on the rear end of the shell, the converter is provided with internal threads for mounting the electric igniter, the converter is provided with two sealing teeth for sealing between the converter and the shell and between the converter and the electric igniter, and the rear end of the converter is provided with an external hexagonal surface for mounting the converter, the shell and the electric igniter.

[0015] The present application has the advantages of compact structure, wide working environment, high working stability, high reliability, no flow resistance in medium passage, good economy, high generalization, wide application pressure range, and providing a new scheme for high-reliability fluid passage sealing and opening in extreme environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the small-sized large-bore redundant electric explosion valve.

[0017] Figure 2 It is a structure schematic view of the small-sized large-bore redundant electric explosion valve when not opened.

[0018] Figure 3 It is a structure schematic view of the small-sized large-bore redundant electric explosion valve after opening.

[0019] Figure 4 It is a structure schematic view of the shell.

[0020] Figure 5 It is a structure schematic view of the connector.

[0021] Figure 6 It is a structure schematic view of the cutter.

[0022] Figure 7 It is a structure schematic view of the piston.

[0023] Figure 8 It is a structure schematic view of the converter.

[0024] Figure 9 It is a structure schematic view of the gasket.

[0025] The reference signs are as follows: 1-shell, 2-connector, 3-cutter, 4-piston, 5-converter, 6-electric igniter, 7-gasket, 8-rubber ring, 101-cross-shaped cavity, 102-igniter mounting port, 103-waist hole, 104-sealing tooth, 105-inner conical surface, 106-variable-diameter step, 301-blind hole, 302-through hole, 303-outer conical surface, 304-small-angle outer conical surface, 401-annular groove, 402-thread hole, 501-convex point. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application. The description of the direction of the present application such as "front", "back", "up", "down" and the like is relative to the view direction, Figure 2 the left side of the view direction is "front", and the right side is "back". Figure 2

[0027] The principle of the present application is that the electric explosion valve of the present application uses a double electric detonator 6, a single shell 1, a single adapter 2, a single cutter 3, a single piston 4 opening structure, and provides kinetic energy through the power supply ignition of the double electric detonator 6 in sequence. The single detonation can open the passage. At the same time, after the electric explosion valve is opened, the sealing of the flow passage of the electric explosion valve can be realized through the structure of the electric explosion valve, so as to ensure that the electric explosion valve can work normally under extreme working conditions such as low temperature and high temperature. When working, the piston 4 pushes the cutter 3 to move, cuts off the adapter 2 in the blind hole 301 of the cutter 3, opens the passage, and at the same time, the front outer conical surface 303 and the middle small angle outer conical surface 304 of the cutter 3 are clamped on the inner conical surface 105 at the front end of the shell 1 and the variable diameter step 106 in the middle, realizing the positioning of the cutter 3, and the electric explosion valve passage is opened.

[0028] As shown in Figure 1 and Figure 2 , a small-sized large-bore redundant electric explosion valve includes a shell 1, an adapter 2, a cutter 3, a piston 4, a converter 5 and an electric detonator 6. As shown in Figure 4 ​As shown, the shell 1 is the main structure of the electric detonation valve, used to install the adapter 2, cutter 3, piston 4, electric initiator 6, etc., and to connect with the flow channel. The shell 1 is provided with a cross-shaped cavity 101 and an initiator mounting port 102, the rear side of the cross-shaped cavity 101 and the initiator mounting port 102 are communicated through a waist hole 103, so that the two electric initiators 6 share the same detonation cavity, and the detonation of a single electric initiator 6 can detonate the other electric initiator 6. The front end of the cross-shaped cavity 101 is a blind hole, the rear end is a threaded hole, and the upper and lower ends are corresponding through holes. The upper end through hole of the cross-shaped cavity 101 is a medium outlet, and the lower end through hole is used to install the adapter 2. The threaded hole at the rear end of the cross-shaped cavity 101 is used to install the transducer 5, and the electric initiator 6 is installed on the transducer 5. Another electric initiator 6 is installed on the initiator mounting port 102, and both electric initiators 6 are communicated with the cross-shaped cavity 101. The cutter 3 and the piston 4 are installed in the cross-shaped cavity 101, and the piston 4 is located at the rear end of the cutter 3. The end of the adapter 2 is inserted into the middle blind hole 301 of the cutter 3. A through hole 302 is processed on the cutter 3. After the electric initiator detonates and pushes the piston 4 and the cutter 3 to cut off the adapter 2, the adapter 2, the through hole 302 of the cutter 3 and the medium outlet form a vertical through passage with the same diameter. The horizontal cavity between the front and rear ends of the cross-shaped cavity 101 of the shell 1 is a variable-diameter long blind hole used to place the cutter 3. The front end of the variable-diameter long blind hole has an inner tapered surface 105, and the middle part has a variable-diameter step 106. The inner tapered surface 105 and the variable-diameter step 106 are used to position and tightly fix the cutter after the cutter moves to the position, preventing the cutter 3 from moving too far. A gasket groove is provided at the rear end of the initiator mounting port 102 and the cross-shaped cavity 101 of the shell 1, and a sealing edge tooth 104 is left on the gasket groove. The gasket groove is used to place the gasket 7, and the sealing edge tooth 104 is used to tightly fit and seal with the gasket 7. The sealing edge tooth 104 is a ring of tapered convex rings on the end face of the gasket groove, and the sealing edge tooth 104 is located on the circle surrounded by the middle diameter of the end face of the gasket groove.

[0029] As shown in Figure 5 The adapter 2 is the interface of the electric detonation valve. The size of the adapter 2 can be adjusted according to actual conditions, used for sealing medium and connecting with the flow channel, and connected with the shell 1 by welding. First, the cutter 3 is installed in the shell 1, then the adapter 2 is installed, so that the upper end of the adapter 2 enters the blind hole 301 in the cutter 3, then the adapter 2 is welded with the shell 1, realizing the fixation among the adapter 2, the cutter 3 and the shell 1. The adapter 2 has a blind hole, the middle part of the adapter 2 is a stepped outer wall used for welding with the shell 1, the upper end of the adapter 2 has a weak ring groove for facilitating the cutter 3 to cut off the adapter 2, and the weak ring groove is cut off by the cutter 3 after the electric initiator 6 is detonated, opening the passage.

[0030] As shown in Figure 6As shown, the cutter 3 has an outer taper surface 303 at the front end, which is wedged with the inner taper surface 105 of the shell 1 under the action of the electric initiator 6. The cutter 3 has a small hole at the front end, so that the front cavity of the cutter 3 is connected with the flow channel of the medium after the cutter 3 is wedged. The cutter 3 has a small-angle outer taper surface 304 at the rear end, which is clamped at the variable-diameter step 106 of the long blind hole of the shell 1 after the cutter 3 moves. The cutter 3 is provided with a threaded hole at the rear end for easy installation. The upper end and the lower end of the middle part of the cutter 3 are flat surfaces, which are used to reduce the weight of the cutter 3.

[0031] As shown in the drawings, Figure 7 The piston 4 is located at the rear end of the cutter 3 in the electric detonator, in front of the converter 5, and is used to push the cutter 3. The piston 4 has an annular groove 401 for accommodating a rubber ring 8 to prevent the debris from entering the medium channel at the moment of detonation of the electric initiator. The piston 4 is provided with a threaded hole 402 at the rear end for easy installation and to increase the detonation volume.

[0032] As shown in the drawings, Figure 8 The converter 5 is used to install the electric initiator 6. The converter 5 is installed at the rear end of the shell 1 and is connected and installed through the external threads on the converter 5 and the internal threads at the rear end of the shell 1. The converter 5 is provided with four protrusions 501 at the front end, which are placed on the rear part of the piston 4 to ensure that the front end of the piston 4 is in contact with the cutter 3, thereby playing a role in limiting and fixing the piston 4. At the same time, it is used to prevent the internal piston 4 from blocking the initiator installation port 102 on the upper part of the rear end of the shell 1 and the waist hole 103 of the rear end of the shell when the electric detonator moves, thereby preventing the high-pressure gas generated by the electric initiator 6 from acting on the rear end of the piston 4. The converter 5 is provided with internal threads for installing the electric initiator 6. The converter 5 is provided with two sealing teeth for sealing between the converter 5 and the shell 1 and between the converter 5 and the electric initiator 6. The converter 5 is provided with an external hexagonal socket at the rear end for installation of the converter 5, the shell 1, and the electric initiator 6.

[0033] The electric initiator 6 is used to provide high-pressure gas to generate detonation thrust. Two electric initiators 6 are used in the electric detonator. When working, the two electric initiators 6 are detonated in sequence to generate high-pressure gas, which drives the piston 4 and the cutter 3 to move, the cutter 3 cuts off the connecting nozzle 2, and the passage is opened. If one of the electric initiators 6 fails, the single electric initiator 6 can cause the other electric initiator 6 to detonate. The double electric initiators 6 can also drive the cutter 3 to cut off the connecting nozzle 2 and open the passage. At the same time, the strength of the electric detonator meets the use requirements.

[0034] As shown in the drawings, Figure 9As shown, the gasket 7 is used to ensure the sealing between the connecting parts, preventing the medium from leaking after the electric explosion valve is opened. The gasket 7 is located between the electric igniter 6 and the shell 1, between the electric igniter 6 and the converter 5, and between the converter 5 and the shell 1, ensuring the sealing between the electric igniter 6 and the shell 1, between the electric igniter 6 and the converter 5, and between the converter 5 and the shell 1. In order to prevent the influence of the ambient temperature, the material of the gasket 7 is metal.

[0035] As shown, Figure 3 When working, the electric igniter 6 ignites to produce high-pressure gas, which drives the cutter 3 to move, so that the cutter 3 cuts off the connecting nozzle 2 to open the passage. At the same time, the outer conical surface 303 at the front of the cutter 3 and the small-angle outer conical surface 304 at the middle part are clamped on the inner conical surface 105 at the front end of the shell 1 and the variable-diameter step 106 at the middle part, so that the cutter 3 is positioned.

[0036] The above is the specific embodiment of the present application and the technical principle used. Any modification or equivalent transformation based on the technical solution of the present application should be included in the protection scope of the present application.

Claims

1. A miniaturized large-diameter redundant electric explosion valve, characterized by: It includes a shell, a nozzle, a cutter, a piston, a converter and an electric detonator. The shell is the main structure of the electric explosion valve, with a cross-shaped cavity and a detonator mounting port provided therein. The rear side of the cross-shaped cavity is connected to the detonator mounting port through a waist hole, wherein the front end of the cross-shaped cavity is a blind hole and the rear end is a threaded hole, and the upper and lower ends are corresponding through holes. The upper through hole of the cross-shaped cavity is the medium outlet, and the lower through hole is used to install the nozzle. The converter is installed on the rear end threaded hole of the cross-shaped cavity, the electric detonator is installed on the converter, and another electric detonator is installed on the detonator mounting port. Both electric detonators are connected to the cross-shaped cavity, and a cutter and a piston are installed in the cross-shaped cavity. The piston is located at the tail end of the cutter, and the end of the nozzle is inserted into the blind hole in the middle of the cutter. A through hole is processed on the cutter. When the electric detonator detonates, the piston and the cutter are pushed to cut off the nozzle, and a through passage is formed between the nozzle and the through hole of the cutter and the medium outlet.

2. A miniaturized large-diameter redundant electric explosion valve according to claim 1, characterized in that: A gasket groove is provided at the detonator mounting port and the rear end port of the cross-shaped cavity, and a sealing edge tooth is left on the gasket groove for placing the gasket. The sealing edge tooth is a circle of conical convex rings on the end face of the gasket groove, and the sealing edge tooth is located on the circle surrounded by the median diameter of the end face of the gasket groove.

3. The miniaturized large-diameter redundant electric explosion valve according to claim 1 is characterized in that: The through passages are straight passages with the same diameter.

4. The miniaturized large-diameter redundant electric explosion valve according to claim 1, characterized in that: A variable diameter long blind hole is provided between the front and rear ends of the cross-shaped cavity of the shell for placing the cutter, wherein the variable diameter long blind hole has an inner cone surface at the front and a variable diameter step in the middle, which is used to position and clamp the cutter after the cutter moves into place.

5. The miniaturized large-diameter redundant electric explosion valve according to claim 1 is characterized in that: The nozzle is the interface of the electric explosion valve, the nozzle is connected to the flow channel, there is a blind hole in the nozzle, the middle part of the nozzle is a stepped outer wall for welding with the shell, and the upper end of the nozzle is provided with a weak ring groove.

6. The miniaturized large-diameter redundant electric explosion valve according to claim 4, characterized in that: The front end of the cutter has an outer conical surface, and the cutter moves under the action of the electric detonator. The outer conical surface contacts and wedges with the inner conical surface of the long blind hole of the shell. The front end of the cutter has a small hole, so that the front cavity of the cutter is connected with the medium flow channel after the cutter is wedged. The rear part of the cutter has a small-angle outer conical surface for clamping the small-angle outer conical surface at the diameter-changing step of the long blind hole of the shell after the cutter moves. The rear end of the cutter is provided with a threaded hole.

7. The miniaturized large-diameter redundant electric explosion valve according to claim 2, characterized in that: The washer is a metal washer.

8. The miniaturized large-diameter redundant electric explosion valve according to claim 1, characterized in that: The piston is provided with an annular groove for accommodating a rubber ring, and a threaded hole is provided at the rear of the piston to facilitate the installation of the piston and increase the detonation volume.

9. The miniaturized large-diameter redundant electric explosion valve according to claim 1, characterized in that: The front end of the converter is provided with four protrusions to prevent the internal piston movement of the electric explosion valve from blocking the detonator mounting port at the upper rear end of the shell and the waist hole at the rear end of the shell when the electric explosion valve moves. The converter is provided with an external thread for installation at the rear end of the shell, and the converter is provided with an internal thread for installing the electric detonator. The converter is equipped with two sealing teeth for sealing between the converter and the shell, and the converter and the electric detonator. The rear end of the converter is provided with an external hexagon for installation of the converter, the shell, and the electric detonator.

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