Electric explosion valve device

Abstract

The invention relates to the technical field of electric explosion valves, and particularly discloses an electric explosion valve device which comprises a valve body, a valve element, a cut-off pin and a detonator assembly. The valve element is arranged in the containing cavity in a sliding mode and provided with a through hole, and the through hole intersects with the axis of the valve element. The cut-off pin is inserted into the through hole, and the two ends of the cut-off pin are connected with the valve body. The detonator assembly comprises a detonator which is arranged in the containing cavity. When the electric explosion valve device works, the detonator is detonated, high-pressure and high-kinetic-energy gas generated by the detonator pushes the valve element to move, and the valve element cuts off the two ends of the cut-off pin. The two ends of the cut-off pin are connected with the valve body, the contact length of the cut-off pin and the valve body in the radial direction of the valve body is increased, the cut-off pin does not need to extend out of the valve body in the radial direction of the valve body, and the radial size of the electric explosion valve is conveniently controlled. Besides, compared with the prior art that a plurality of cut-off pins are arranged on one side of the valve body, the cut-off pins penetrate through the valve element through the through holes, the two movable sides of the valve element cut off the two ends of the cut-off pins, and the two sides of the valve element are evenly stressed.

Description

Technical Field

[0001] The invention relates to the technical field of electric explosion valves, and in particular to an electric explosion valve device. Background Art

[0002] The electric explosion valve is an electrical device that uses electrical energy to detonate explosives or detonating devices and is widely used in various fields.

[0003] Announcement No. CN108071810B discloses an electric explosion-type water inlet valve for deep sea, comprising a valve body and a valve core cavity located on the front side of the valve body, a valve core is arranged in the valve core cavity, a water inlet and a water outlet are respectively arranged on the valve core cavity, a push rod cavity connected to the valve core cavity is arranged on the rear side of the valve body, a push rod connected to the valve core is arranged in the push rod cavity, an electric explosion valve and a cable connected to the electric explosion valve are arranged at the rear end of the push rod, a cut-off pin for fixing the push rod is arranged on the rear side of the push rod cavity to prevent the push rod from moving before ignition, a positioning pin for limiting the push rod is arranged on the front side of the push rod cavity to fix the push rod after ignition to prevent the water inlet valve from closing due to water flow pressure.

[0004] In the above-mentioned electric explosion type water inlet valve, the cut-off pin is arranged on one side of the valve body. In order to ensure that the cut-off pin can limit the push rod and the push rod can cut off the cut-off pin, the cut-off pin needs to be extended radially outwardly along the push rod to a certain length so that the cut-off pin can be firmly fixed to the valve body, resulting in that the radial length of the electric explosion valve is difficult to control, which is not conducive to the miniaturization of the electric explosion valve. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to provide an electric explosion valve device to solve the technical problem in the prior art that the radial length of the electric explosion valve is difficult to control because the cut-off pin extends outward along the radial direction of the push rod for a certain length.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides an electric explosion valve device, comprising: A valve body is formed with a receiving cavity; A valve core is slidably disposed in the accommodating cavity and is provided with a through hole, wherein the through hole intersects with the axis of the valve core; A cut-off pin is inserted into the through hole, and both ends of the pin are connected to the valve body; and A detonator is built into the accommodating cavity.

[0007] In some embodiments, both ends of the cutting pin are provided with an annular cutting groove, and the depth of the cutting groove along the radial direction of the cutting pin is 40%-25% of the diameter of the cutting pin.

[0008] In some embodiments, the cutting groove is disposed in the middle of a gap between the valve core and an inner wall of the accommodating cavity.

[0009] In some embodiments, a length of the cutting groove along the axial direction of the cutting pin is less than 80% of the gap.

[0010] In some embodiments, the valve core is formed with an annular limiting groove along the circumference; The electric explosion valve device also includes an elastic check piece, which is connected to the valve core and can be inserted into the limiting groove, and is used to limit the sliding of the valve core relative to the valve body after the limiting groove of the valve core cooperates with the elastic check piece.

[0011] In some embodiments, the valve body is provided with a first mounting hole and a second mounting hole respectively relative to the through hole and the limiting groove, the first mounting hole is communicated with the accommodating cavity and passes through the valve body, and the second mounting hole is communicated with the accommodating cavity and the outside of the valve body; The two ends of the cutting pin are slidably inserted into the first mounting hole, and the elastic stopper is installed in the second mounting hole; The electric explosion valve device also includes a nut, which is threadedly connected to the valve body and can cover the first mounting hole and the second mounting hole.

[0012] In some embodiments, the valve core is in sealing cooperation with the inner wall of the accommodating cavity; The valve body is further provided with an exhaust hole, which is communicated with the accommodating cavity and is arranged between the valve core and the detonator; The electric explosion valve device further comprises a sealing assembly, wherein the sealing assembly comprises a sealing ball, and the sealing ball is inserted into the exhaust hole and is interference-fitted with the exhaust hole.

[0013] In some embodiments, the sealing assembly further includes a sealing filler, which is disposed in the exhaust hole and on a side of the sealing ball facing away from the accommodating cavity.

[0014] In some embodiments, the number of the detonators is two, and the two detonators are spaced apart and arranged at the ends of the accommodating cavity; The detonator assembly also includes an ignition wire, which is connected to both of the detonators and extends out of the valve body.

[0015] In some embodiments, a solidified layer is provided on the inner wall of the end of the accommodating cavity, the gap between the two detonators and the ignition wire.

[0016] Compared with the prior art, the electric explosion valve device provided by the present invention, when the electric explosion valve device is working, the detonator is detonated, and the high-pressure and high-kinetic energy gas generated by the detonator pushes the valve core to move, and the valve core cuts off the two ends of the cut-off pin, thereby realizing the movement of the valve core. In the present application, the two ends of the cut-off pin are respectively connected to the valve body, which increases the contact length of the cut-off pin with the valve body along the radial direction of the valve body, so that the cut-off pin does not need to extend out of the valve body along the radial direction of the valve body, which is convenient for controlling the radial size of the electric explosion valve; and, compared with the prior art in which multiple cut-off pins are arranged on one side of the valve body, in the present application, since the cut-off pin passes through the valve core through the through hole, the two sides of the valve core that move cut off the two ends of the cut-off pin, and the two sides of the valve core are evenly stressed, which avoids the situation of jamming when the valve core moves, so that the valve core can move smoothly under the action of the detonator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an electric explosion valve device provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of the structure after the cut-off pin in the electric explosion valve device provided by one embodiment of the present invention is cut off; Figure 3 It is a structural schematic diagram of a valve core in an electric explosion valve device provided in one embodiment of the present invention; Figure 4 It is a schematic structural diagram of a cut-off pin in an electric explosion valve device provided in one embodiment of the present invention.

[0018] Description of reference numerals: Valve body 1; Accommodating chamber 1a; Valve core 2; Limiting groove 2a; Through hole 2c; Cut off pin 3; Cutting groove 3a; Detonator assembly 4; Detonator 41; Solidified layer 42; Ignition line 43; Elastic check member 5; Ball 51; Spring 52; Nut 6; Sealing assembly 7; Sealing ball 71; Sealing filler 72; Sealing ring 8. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem that the radial length of the electric explosion valve is difficult to control because the cut-off pin extends a certain length radially outward along the push rod, the present invention provides an electric explosion valve device capable of controlling the radial length of the electric explosion valve.

[0021] It should be noted that the electric explosion valve device described in the present invention is used for but not limited to deep-sea water inlet valves, etc. For the convenience of explanation, in the present invention, only the application of the electric explosion valve device to a deep-sea water inlet valve is used as an example for explanation, and the principle of applying the electric explosion valve device to other types of equipment is essentially the same as the principle applied to the deep-sea water inlet valve, which will not be described one by one here.

[0022] See also Figure 1 , Figure 1 It is a structural schematic diagram of an electric explosion valve device in an embodiment of the present invention, an electric explosion valve device, including a valve body 1, a valve core 2, a cut-off pin 3 and a detonator 41, the valve body 1 is formed with a accommodating chamber 1a; the valve core 2 is slidably arranged in the accommodating chamber 1a, and is provided with a through hole 2c, and the through hole 2c intersects with the axis of the valve core 2; the cut-off pin 3 is inserted into the through hole 2c, and both ends are connected to the valve body 1; the detonator 41 is built into the accommodating chamber 1a.

[0023] Specifically, when the electric explosion valve device is working, the detonator 41 is detonated, and the high-pressure and high-kinetic energy gas generated by the detonator 41 pushes the valve core 2 to move, and the valve core 2 cuts off the two ends of the cut-off pin 3, thereby realizing the movement of the valve core 2. In the present application, the two ends of the cut-off pin 3 are respectively connected to the valve body 1, which increases the contact length of the cut-off pin 3 with the valve body 1 along the radial direction of the valve body 1, so that the cut-off pin 3 does not need to extend out of the valve body 1 along the radial direction of the valve body 1, which is convenient for controlling the radial size of the electric explosion valve; and, compared with the prior art in which multiple cut-off pins 3 are arranged on one side of the valve body 1, in the present application, since the cut-off pin 3 passes through the valve core 2 through the through hole 2c, the two sides of the movement of the valve core 2 cut off the two ends of the cut-off pin 3, and the two sides of the valve core 2 are evenly stressed, so as to avoid the valve core 2 from getting stuck when moving, so that the valve core 2 can move smoothly under the action of the detonator 41.

[0024] The angle between the axis of the through hole 2c and the axis of the valve core 2 can be an acute angle, an obtuse angle, or a right angle. Preferably, the angle between the axis of the through hole 2c and the axis of the valve core 2 is a right angle, and when the cut-off pin 3 is squeezed by the valve core 2, the force on both sides of the cut-off pin 3 along the axis of the valve core 2 is balanced, reducing the problem of uneven force on both sides of the valve core 2, so that both ends of the cut-off pin 3 can be cut evenly.

[0025] like Figure 4 As shown, in some embodiments, both ends of the cutting pin 3 are provided with an annular cutting groove 3 a , and the depth of the cutting groove 3 a along the radial direction of the cutting pin 3 is 40%-25% of the diameter of the cutting pin 3 .

[0026] By providing cutting grooves 3a at both ends of the cutting pin 3, when the cutting pin 3 is subjected to the shearing action of the valve core 2 and the valve body 1, the cutting pin 3 breaks at the cutting groove 3a, thereby controlling the breaking position of the cutting pin 3; by limiting the size of the cutting groove 3a, it is possible to ensure that the cutting pin 3 can fix the valve core 2 while the valve core 2 is moved by the action of the detonator 41, and the valve core 2 can cut off the cutting pin 3.

[0027] like Figure 1 and Figure 2 As shown, in some embodiments, the cutting groove 3a is arranged in the middle of the gap between the valve core 2 and the inner wall of the accommodating chamber 1a.

[0028] By limiting the position of the cutting groove 3a to the middle of the gap between the valve core 2 and the inner wall of the accommodating chamber 1a, when the cutting pin 3 is sheared and broken by the valve core 2, the breaking position is the middle of the gap between the valve core 2 and the inner wall of the accommodating chamber 1a, which can prevent the cutting pin 3 from directly abutting the valve core 2 or the inner wall of the accommodating chamber 1a after breaking, thereby reducing the risk of the valve core 2 getting stuck.

[0029] like Figure 1 and Figure 2 As shown, in some embodiments, the length of the cutting groove 3a along the axial direction of the cutting pin 3 is less than 80% of the gap.

[0030] Through the above definition, the distance between the cutting groove 3a and the outer wall of the valve core 2 and the inner wall of the accommodating chamber 1a can be limited, avoiding the broken cutting pin 3 hindering the sliding of the valve core 2 due to the fracture being close to the outer wall of the valve core 2 and the inner wall of the accommodating chamber 1a.

[0031] In order to limit the valve core 2 from retreating under external pressure, Figure 1 and Figure 3 As shown, in some embodiments, the valve core 2 is formed with an annular limiting groove 2a along the circumferential direction; the electric explosion valve device also includes an elastic check member 5, which is connected to the valve core 2 and can be inserted into the limiting groove 2a, and is used to limit the sliding of the valve core 2 relative to the valve body 1 after the limiting groove 2a of the valve core 2 cooperates with the elastic check member 5.

[0032] The valve core 2 slides relative to the valve body 1 under the push of the high kinetic energy gas of the detonator 41. After sliding, the external pressure tends to drive the valve core 2 to reset. In this embodiment, a limit groove 2a and an elastic check member 5 are provided. When the valve core 2 slides to the limit groove 2a relative to the elastic check member 5, the elastic check member 5 is embedded in the limit groove 2a to limit the valve core 2 from continuing to slide and retreat. By providing an annular limit groove 2a, the elastic check member 5 is provided on one side of the valve body 1. When the valve core 2 is assembled into the accommodating cavity 1a of the valve body 1, since the limit groove 2a is annular, when the valve core 2 slides over the elastic check member 5, the elastic check member 5 can always be embedded, thereby reducing the difficulty of assembling the valve core 2.

[0033] It should be understood that the cut-off pin 3 and the elastic check member 5 can be connected to the valve body 1 by plugging and welding. Specifically, Figure 1 and Figure 2 As shown, in some embodiments, the valve body 1 is respectively provided with a first mounting hole and a second mounting hole relative to the through hole 2c and the limiting groove 2a, the first mounting hole is connected with the accommodating cavity 1a and passes through the valve body 1, and the second mounting hole is connected with the accommodating cavity 1a and the outside of the valve body 1; both ends of the cutting pin 3 are slidably inserted in the first mounting hole, and the elastic check member 5 is installed in the second mounting hole; the electric explosion valve device also includes a nut 6, which is threadedly connected to the valve body 1 and can cover the first mounting hole and the second mounting hole.

[0034] When installing the cut-off pin 3 and the elastic check piece 5, the cut-off pin 3 is inserted into the valve body 1 through the first mounting hole, and the cut-off pin 3 passes through the valve core 2 until both ends of the cut-off pin 3 are located in the first mounting hole; the elastic check piece 5 is installed in the second mounting hole, and the elastic check piece 5 abuts against the valve core 2, and then the nut 6 is threadedly connected to the valve body 1, and the nut 6 is sleeved on the cut-off pin 3 and the elastic check piece 5, which can fix and limit the cut-off pin 3 and the elastic check piece 5. The method of installing the cut-off pin 3 and the elastic check piece 5 from the outside facilitates the installation of the cut-off pin 3 and the elastic check piece 5.

[0035] It should be understood that the elastic check member 5 can be a spring, a spring pin, an elastic block, etc. Figure 1 and Figure 2 As shown, specifically, in one embodiment, the elastic check member 5 includes a ball 51 and a spring 52, the ball 51 is slidably arranged in the second mounting hole, one end of the spring 52 abuts against the ball 51, and the other end abuts against the inner wall of the nut 6.

[0036] The high-pressure and high-kinetic-energy gas generated by the detonator 41 pushes the valve core 2 to move, and the valve core 2 slides relative to the ball 51. When the limit groove 2a of the valve core 2 slides to the ball 51, the spring 52 pushes the ball 51 to get into the limit groove 2a. At this time, the ball 51 can limit the sliding of the valve core 2 relative to the valve body 1, thereby preventing the valve core 2 from sliding further and preventing the valve core 2 from retreating under the action of external pressure.

[0037] Furthermore, the depth of the limiting groove 2a along the radial direction of the valve core 2 is 60%-90% of the diameter of the ball 51. Figure 1 and Figure 2 As shown, in one embodiment, the depth of the limiting groove 2a along the radial direction of the valve core 2 is 75% of the diameter of the ball 51.

[0038] Through the above arrangement, most of the ball 51 can be embedded in the valve core 2, preventing the retreating hairstyle from pushing the ball 51 into the second mounting hole.

[0039] Furthermore, the width of the limiting groove 2 a along the axial direction of the valve core 2 is 120%-160% of the diameter of the ball 51 .

[0040] Through the above arrangement, when the valve core 2 slides over the ball 51, there is space for the ball 51 to slide into the limiting groove 2a, so that the ball 51 can be stuck in the limiting groove 2a at different sliding positions of the valve core 2.

[0041] When installing the electric explosion valve device, first place the detonator 41 inside the accommodating chamber 1a, and then insert the valve core 2 into the accommodating chamber 1a. During the sliding of the valve core 2, the air between the detonator 41 and the valve core 2 will prevent the valve core 2 from sliding into the accommodating chamber 1a. For this reason, Figure 1 and Figure 2 As shown, in some embodiments, the valve core 2 is sealed with the inner wall of the accommodating chamber 1a; the valve body 1 is also provided with an exhaust hole, which is connected with the accommodating chamber 1a and is arranged between the valve core 2 and the detonator 41; the electric explosion valve device also includes a sealing component 7, and the sealing component 7 includes a sealing ball 71, which is inserted into the exhaust hole and has an interference fit with the exhaust hole.

[0042] The valve core 2 is sealed against the inner wall of the accommodating chamber 1a, which can prevent water from entering the accommodating chamber 1a through the valve core 2 and contacting the detonator 41. When the valve core 2 slides into the accommodating chamber 1a, the gas between the valve core 2 and the detonator 41 is discharged from the accommodating chamber 1a through the exhaust hole, which can prevent the gas from hindering the valve core 2 from sliding into the accommodating chamber 1a, so that the valve core 2 can slide to the preset position of the valve body 1; when the valve core 2 slides to the preset position, in order to close the exhaust hole, the sealing ball 71 is embedded in the exhaust hole. Since the sealing ball 71 and the exhaust hole are in an interference fit, the sealing ball 71 can block the exhaust hole and will be stuck in the exhaust hole. At the same time, the sealing ball 71 can be completely embedded in the exhaust hole, and no protrusions will be formed outside the valve body 1.

[0043] It should be understood that the valve core 2 and the inner wall of the accommodating chamber 1a can be sealed by cooperation, or by a sealing ring and a sealing filler. Figure 1 and Figure 2 As shown, in one of the embodiments, a sealing ring 8 is provided on the peripheral wall of the valve core 2, the sealing ring 8 is connected to the valve core 2, and the outer ring fits the inner wall of the accommodating chamber 1a, and the sealing ring 8 is used to achieve sealing between the valve core 2 and the inner wall of the accommodating chamber 1a.

[0044] like Figure 1 and Figure 2 As shown, in some embodiments, the sealing assembly 7 further includes a sealing filler 72, which is disposed in the exhaust hole and on a side of the sealing ball 71 facing away from the accommodating cavity 1a.

[0045] By providing the sealing filler 72 , the sealing filler 72 can further seal the exhaust hole, and the sealing filler 72 can fix the sealing ball 71 relative to the inner wall of the exhaust hole.

[0046] It should be understood that the sealing filler 72 may be an adhesive or a welding agent, etc.

[0047] When a detonator 41 matching the inner diameter of the accommodating cavity 1a is used, when the detonator 41 is loaded into the accommodating cavity 1a, there is a certain safety risk that the detonator 41 is squeezed. Figure 1 and Figure 2 As shown, in some embodiments, the number of detonators 41 is two, and the two detonators 41 are spaced apart at the ends of the accommodating chamber 1a; the detonator assembly 4 also includes an ignition wire 43, which is connected to both detonators 41 and extends out of the valve body 1.

[0048] By arranging two detonators 41 arranged at intervals, there is a gap between the two detonators 41, so that when the detonator 41 is loaded into the accommodating chamber 1a, it is possible to avoid extrusion between the two detonators 41 and between the detonator 41 and the inner wall of the accommodating chamber 1a, thereby reducing the safety risk of extrusion; secondly, the two detonators 41 are symmetrically distributed along the axis of the valve body 1, and when the detonator 41 is detonated, the two detonators 41 can both apply thrust to the movement of the valve core 2, thereby reducing the uneven force on one side of the valve core 2; by arranging the ignition line 43, the ignition line 43 can control the detonation of the detonator 41.

[0049] It should be understood that the ignition line 43 can extend out of the valve body 1 from the side wall or end of the valve body 1. Figure 1 and Figure 2 As shown, in one of the embodiments, the valve body 1 is provided with an opening and a wire hole connected to the accommodating chamber 1a at both ends along the axial direction, the nut 6 is arranged relative to the opening and is threadedly connected to the open end of the valve body 1, and the nut 6 is provided with an axial hole for part of the valve core 2 to pass through; the ignition wire 43 passes through the valve body 1 through the wire hole.

[0050] In order to seal the wire hole of the accommodating chamber 1a and fix the two detonators 41 and the ignition wire 43, as shown in FIG. Figure 1 and Figure 2 As shown, in some embodiments, a solidified layer 42 is provided on the inner wall of the end of the accommodating cavity 1 a , the gap between the two detonators 41 and the ignition wire 43 .

[0051] After the solidified layer 42 is solidified, the ends of the detonator 41 and the ignition wire 43 can be fixed to the inner wall of the end of the accommodating cavity 1a, and the hole where the ignition wire 43 passes through can be sealed.

[0052] It should be understood that the cured layer 42 may be formed by curing epoxy resin, curing a photocurable material, or the like.

[0053] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An electric explosion valve device, characterized in that: include: A valve body is formed with a receiving cavity; A valve core is slidably disposed in the accommodating cavity and is provided with a through hole, wherein the through hole intersects with the axis of the valve core; A cut-off pin is inserted into the through hole, and both ends of the pin are connected to the valve body; and The detonator assembly comprises a detonator, wherein the detonator is built in the accommodating cavity.

2. The electric explosion valve device according to claim 1, characterized in that: Both ends of the cutting pin are provided with an annular cutting groove, and the depth of the cutting groove along the radial direction of the cutting pin is 40%-25% of the diameter of the cutting pin.

3. The electric explosion valve device according to claim 2, characterized in that: The cutting groove is arranged in the middle of the gap between the valve core and the inner wall of the accommodating cavity.

4. The electric explosion valve device according to claim 3, characterized in that: The length of the cutting groove along the axial direction of the cutting pin is less than 80% of the gap.

5. The electric explosion valve device according to claim 1, characterized in that: The valve core is formed with an annular limiting groove along the circumference; The electric explosion valve device also includes an elastic check piece, which is connected to the valve core and can be inserted into the limiting groove, and is used to limit the sliding of the valve core relative to the valve body after the limiting groove of the valve core cooperates with the elastic check piece.

6. The electric explosion valve device according to claim 5, characterized in that: The valve body is provided with a first mounting hole and a second mounting hole respectively relative to the through hole and the limiting groove, the first mounting hole is connected with the accommodating cavity and passes through the valve body, and the second mounting hole is connected with the accommodating cavity and the outside of the valve body; The two ends of the cutting pin are slidably inserted into the first mounting hole, and the elastic stopper is installed in the second mounting hole; The electric explosion valve device also includes a nut, which is threadedly connected to the valve body and can cover the first mounting hole and the second mounting hole.

7. The electric explosion valve device according to claim 1, characterized in that: The valve core is in sealing cooperation with the inner wall of the accommodating cavity; The valve body is further provided with an exhaust hole, which is communicated with the accommodating cavity and is arranged between the valve core and the detonator; The electric explosion valve device further comprises a sealing assembly, wherein the sealing assembly comprises a sealing ball, and the sealing ball is inserted into the exhaust hole and is interference-fitted with the exhaust hole.

8. The electric explosion valve device according to claim 7, characterized in that: The sealing assembly further comprises a sealing filler, which is arranged in the exhaust hole and on a side of the sealing ball away from the accommodating cavity.

9. The electric explosion valve device according to claim 1, characterized in that: The number of the detonators is two, and the two detonators are arranged at intervals at the ends of the accommodating cavity; The detonator assembly also includes an ignition wire, which is connected to both of the detonators and extends out of the valve body.

10. The electric explosion valve device according to claim 9, characterized in that: The inner wall of the end of the accommodating cavity, the gap between the two detonators and the ignition wire are provided with a solidified layer.

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