An electrically exploding valve device

Abstract

The application relates to the technical field of electric explosion valves, and particularly discloses an electric explosion valve device which comprises a valve body, a valve core, a cutting pin and a detonator assembly, the valve body is formed with an accommodating cavity; the valve core is slidably arranged in the accommodating cavity and is provided with a through hole which intersects with the axis of the valve core; the cutting pin is inserted into the through hole and connected with the valve body at both ends; the detonator assembly comprises a detonator which is arranged in the accommodating cavity. When the electric explosion valve device works, the detonator is initiated, 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 cutting pin. The two ends of the cutting pin are connected with the valve body, the contact length of the cutting pin along the radial direction of the valve body is increased, so that the cutting pin does not need to extend out of the valve body along the radial direction of the valve body, the radial size of the electric explosion valve is convenient to control; moreover, compared with the prior art in which multiple cutting pins are arranged on one side of the valve body, in the application, the cutting pin passes through the valve core through the through hole, the two ends of the cutting pin are cut off on both sides of the valve core, and the two sides of the valve core are uniformly stressed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric explosion valve, in particular to an electric explosion valve device. BACKGROUND

[0002] Electric explosion valve is an electrical device that uses electric energy to detonate explosive or initiating device, and is widely used in various fields.

[0003] Publication No. CN108071810B discloses an electric explosion type water inlet valve for deep sea, which comprises 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 arranged on the valve core cavity respectively, a push rod cavity is arranged on the rear side of the valve body and is communicated with the valve core cavity, a push rod connected with the valve core is arranged in the push rod cavity, an electric explosion valve and a cable connected with the electric explosion valve are arranged on 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 firing, and 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 firing so as to prevent the water inlet valve from being closed 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 extend outward along the radial direction of the push rod by a certain length, so that the cut-off pin can be stably fixed to the valve body, which leads to that the radial length of the electric explosion valve is not easy to control and is not conducive to the miniaturization of the electric explosion valve. SUMMARY

[0005] The present application aims to overcome the above technical deficiencies and provide an electric explosion valve device to solve the technical problem that the cut-off pin extends outward along the radial direction of the push rod by a certain length, leading to that the radial length of the electric explosion valve is not easy to control.

[0006] To achieve the above technical purpose, the present application adopts the following technical scheme:

[0007] The present application provides an electric explosion valve device, which comprises:

[0008] A valve body is formed with a containing cavity;

[0009] A valve core is slidably arranged in the containing cavity and is provided with a through hole intersecting with the axis of the valve core;

[0010] A cut-off pin is inserted into the through hole and connected with the valve body at both ends; and

[0011] A detonator is built in the containing cavity.

[0012] In some embodiments, both ends of the cut-off pin are provided with annular cut-off grooves, and the depth of the cut-off grooves along the radial direction of the cut-off pin is 40%-25% of the diameter of the cut-off pin.

[0013] In some embodiments, the cut-off groove is arranged in the middle of the gap between the valve core and the inner wall of the accommodating cavity.

[0014] In some embodiments, the length of the cut-off groove along the axial direction of the cut-off pin is less than 80% of the length of the gap.

[0015] In some embodiments, the valve core is circumferentially formed with an annular limiting groove;

[0016] The electric detonation valve device further comprises an elastic check piece connected to the valve core and capable of being inserted into the limiting groove, for limiting 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.

[0017] In some embodiments, the valve body is provided with a first mounting hole and a second mounting hole relative to the through hole and the limiting groove respectively, the first mounting hole is in communication with the accommodating cavity and penetrates through the valve body, and the second mounting hole is in communication with the accommodating cavity and the outside of the valve body;

[0018] The two ends of the cut-off pin are slidingly inserted into the first mounting hole, and the elastic check piece is mounted in the second mounting hole;

[0019] The electric detonation valve device further comprises a screw cap, which is threadedly connected to the valve body and capable of shielding the first mounting hole and the second mounting hole.

[0020] In some embodiments, the valve core is sealingly cooperated with the inner wall of the accommodating cavity;

[0021] The valve body is further provided with an exhaust hole, which is in communication with the accommodating cavity and arranged between the valve core and the detonator;

[0022] The electric detonation valve device further comprises a sealing assembly, which comprises a sealing ball, the sealing ball is inserted into the exhaust hole and is in interference fit with the exhaust hole.

[0023] In some embodiments, the sealing assembly further comprises a sealing filler, which is arranged in the exhaust hole and on the side of the sealing ball away from the accommodating cavity.

[0024] In some embodiments, the number of detonators is two, and the two detonators are arranged at the ends of the accommodating cavity in a spaced manner;

[0025] The detonator assembly further comprises an ignition wire, which is connected to both of the detonators and extends out of the valve body.

[0026] In some embodiments, a solidified layer is arranged in the gap between the end wall of the accommodating cavity, the two detonators and the ignition wire.

[0027] Compared with the prior art, the electric explosion valve device provided by the application realizes the movement of the valve core by cutting off the two ends of the cutting pin when the detonator is initiated and the high-pressure and high-energy gas generated by the detonator pushes the valve core to move, and the two ends of the cutting pin are connected with the valve body respectively in the application, the contact length of the cutting pin along the radial direction of the valve body is increased, so that the cutting pin does not need to extend out of the valve body along the radial direction of the valve body, which facilitates the control of the radial size of the electric explosion valve; in addition, compared with the prior art in which a plurality of cutting pins are arranged on one side of the valve body, in the application, the cutting pin passes through the valve core through the through hole, the two ends of the cutting pin on both sides of the valve core are cut off, the forces on both sides of the valve core are uniform, and the situation that the valve core is stuck during movement is avoided, so that the valve core can move smoothly under the action of the detonator. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of an electric explosion valve device provided by an embodiment of the application;

[0029] Figure 2 is a structural schematic diagram of the electric explosion valve device after the cutting pin is cut off provided by an embodiment of the application;

[0030] Figure 3 is a structural schematic diagram of the valve core in the electric explosion valve device provided by an embodiment of the application;

[0031] Figure 4 is a structural schematic diagram of the cutting pin in the electric explosion valve device provided by an embodiment of the application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] valve body 1;

[0034] accommodating cavity 1a;

[0035] valve core 2;

[0036] limiting groove 2a;

[0037] through hole 2c;

[0038] cutting pin 3;

[0039] cutting groove 3a;

[0040] detonator assembly 4;

[0041] detonator 41;

[0042] solidified layer 42;

[0043] ignition wire 43;

[0044] elastic check 5;

[0045] ball 51;

[0046] spring 52;

[0047] nut 6;

[0048] sealing assembly 7;

[0049] sealing ball 71;

[0050] sealing filler 72;

[0051] sealing ring 8. DETAILED DESCRIPTION

[0052] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0053] In order to solve the technical problem that the radial length of the electric explosion valve is not easy to control due to the fact that the cut-off pin extends a certain length along the radial direction of the push rod, the present application provides an electric explosion valve device which can control the radial length of the electric explosion valve.

[0054] It should be noted that the electric explosion valve device described herein is used for but not limited to deep-sea water inlet valves and the like. For the convenience of description, in the present application, only the electric explosion valve device applied to the deep-sea water inlet valve is taken as an example for description, and the principle of the electric explosion valve device applied to other types of equipment is substantially the same as that applied to the deep-sea water inlet valve, which is not described herein.

[0055] Please refer to Figure 1 , Figure 1 Fig. 1 is a structural schematic diagram of an electric explosion valve device according to an embodiment of the present application. The electric explosion valve device comprises 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 receiving cavity 1a. The valve core 2 is slidingly arranged in the receiving cavity 1a and is provided with a through hole 2c which intersects with the axis of the valve core 2. The cut-off pin 3 is inserted into the through hole 2c and is connected to the valve body 1 at both ends. The detonator 41 is built-in in the receiving cavity 1a.

[0056] Specifically, when the electric explosion valve device works, the detonator 41 is initiated, and the high-pressure and high-energy gas generated by the detonator 41 drives 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 connected to the valve body 1 respectively, thereby increasing the contact length of the cut-off pin 3 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; moreover, compared with the prior art in which a plurality of 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 ends of the cut-off pin 3 are cut off on both sides of the valve core 2, and the forces on both sides of the valve core 2 are uniform, thereby avoiding the situation that the valve core 2 is stuck when moving, so that the valve core 2 can move smoothly under the action of the detonator 41.

[0057] 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, so that when the cut-off pin 3 is extruded by the valve core 2, the forces on both sides of the cut-off pin 3 along the axis of the valve core 2 are balanced, thereby reducing the problem of uneven force on both sides of the valve core 2, so that the two ends of the cut-off pin 3 can be cut off uniformly.

[0058] As shown in Figure 4 , in some embodiments, the two ends of the cut-off pin 3 are each provided with an annular cut-off groove 3a, and the depth of the cut-off groove 3a along the radial direction of the cut-off pin 3 is 40%-25% of the diameter of the cut-off pin 3.

[0059] By providing the cut-off groove 3a at the two ends of the cut-off pin 3, when the cut-off pin 3 is subjected to the shearing action of the valve core 2 and the valve body 1, the cut-off pin 3 is broken at the cut-off groove 3a, so that the breaking position of the cut-off pin 3 can be controlled; by limiting the size of the cut-off groove 3a, it can be ensured that the cut-off pin 3 can cut off the cut-off pin 3 when the valve core 2 is moved under the action of the detonator 41 while fixing the valve core 2.

[0060] As shown in Figure 1 and Figure 2 , in some embodiments, the cut-off groove 3a is arranged at the middle part of the gap between the valve core 2 and the inner wall of the accommodating cavity 1a.

[0061] By limiting the position of the cut-off groove 3a to the middle part of the gap between the valve core 2 and the inner wall of the accommodating cavity 1a, when the cut-off pin 3 is broken by the shearing action of the valve core 2, the breaking position is the middle part of the gap between the valve core 2 and the inner wall of the accommodating cavity 1a, which can avoid the broken cut-off pin 3 directly abutting against the valve core 2 or the inner wall of the accommodating cavity 1a, thereby reducing the risk of the valve core 2 being stuck.

[0062] As shown in Figure 1 and Figure 2 , in some embodiments, the length of the cut-off groove 3a along the axial direction of the cut-off pin 3 is less than 80% of the gap.

[0063] By the above definition, the distance between the cutting-off slot 3a and the outer wall of the valve core 2 and the inner wall of the accommodating cavity 1a can be defined, and the broken cutting-off pin 3 caused by the fracture close to the outer wall of the valve core 2 and the inner wall of the accommodating cavity 1a is avoided to hinder the sliding of the valve core 2.

[0064] In order to limit the valve core 2 to retreat under the external pressure, as shown in Figure 1 and Figure 3 , in some embodiments, the valve core 2 is formed with an annular limiting slot 2a in the circumferential direction; the electric explosion valve device further comprises an elastic check piece 5 connected with the valve core 2 and capable of being inserted into the limiting slot 2a, for limiting the sliding of the valve core 2 relative to the valve body 1 after the limiting slot 2a of the valve core 2 cooperates with the elastic check piece 5.

[0065] The valve core 2 slides relative to the valve body 1 under the high-energy gas pushing of the detonator 41, and after the sliding, the external pressure has a tendency to drive the valve core 2 to reset. In the embodiment, the limiting slot 2a and the elastic check piece 5 are arranged, and when the valve core 2 slides to the limiting slot 2a relative to the elastic check piece 5, the elastic check piece 5 is embedded into the limiting slot 2a to limit the continuous sliding and retreat of the valve core 2; by arranging the annular limiting slot 2a, the elastic check piece 5 is arranged on one side of the valve body 1, and when the valve core 2 is assembled into the accommodating cavity 1a of the valve body 1, since the limiting slot 2a is annular, the elastic check piece 5 can always be embedded when the valve core 2 slides through the elastic check piece 5, thereby reducing the assembly difficulty of the valve core 2.

[0066] It should be understood that the cutting-off pin 3 and the elastic check piece 5 can be connected with the valve body 1 by plug-in and welding, etc. Specifically, as shown in Figure 1 and Figure 2 , in some embodiments, the valve body 1 is provided with a first mounting hole and a second mounting hole relative to the through hole 2c and the limiting slot 2a respectively, the first mounting hole is in communication with the accommodating cavity 1a and penetrates through the valve body 1, and the second mounting hole is in communication with the accommodating cavity 1a and the outside of the valve body 1; the two ends of the cutting-off pin 3 are slidingly inserted into the first mounting hole, and the elastic check piece 5 is mounted in the second mounting hole; the electric explosion valve device further comprises a nut 6 which is threadedly connected with the valve body 1 and capable of shielding the first mounting hole and the second mounting hole.

[0067] When the cutting-off pin 3 and the elastic check piece 5 are installed, the cutting-off pin 3 is inserted into the valve body 1 through the first mounting hole and passes through the valve core 2 until the two ends of the cutting-off pin 3 are located in the first mounting hole; the elastic check piece 5 is mounted in the second mounting hole and abuts against the valve core 2, and then the nut 6 is threadedly connected with the valve body 1 and is sleeved on the cutting-off pin 3 and the elastic check piece 5, thereby fixing and limiting the cutting-off pin 3 and the elastic check piece 5; the cutting-off pin 3 and the elastic check piece 5 are installed from the outside, which is convenient for the installation of the cutting-off pin 3 and the elastic check piece 5.

[0068] It should be understood that the elastic check 5 can be a spring, a spring pin, an elastic block, etc. As shown in Figure 1 and Figure 2 specifically, in one of the embodiments, the elastic check 5 includes a ball 51 and a spring 52, the ball 51 is slidingly arranged in the second mounting hole, and one end of the spring 52 abuts against the ball 51 and the other end abuts against the inner wall of the nut 6.

[0069] The high-pressure and high-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 limiting groove 2a of the valve core 2 slides to the position of the ball 51, the spring 52 pushes the ball 51 to be clamped into the limiting groove 2a. At this time, the ball 51 can limit the sliding of the valve core 2 relative to the valve body 1, and avoid the further sliding of the valve core 2 and the retreat of the valve core 2 under the action of the external pressure.

[0070] Further, 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. As shown in Figure 1 and Figure 2 in one of the embodiments, 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.

[0071] Through the above arrangement, most of the ball 51 can be embedded in the valve core 2, avoiding the retreat of the hair style to push the ball 51 into the second mounting hole.

[0072] Further, the width of the limiting groove 2a along the axial direction of the valve core 2 is 120%-160% of the diameter of the ball 51.

[0073] Through the above arrangement, when the valve core 2 slides through the position of the ball 51, the space for the ball 51 to slide into the limiting groove 2a can be provided for the valve core 2, so that the ball 51 can be clamped into the limiting groove 2a at different sliding positions of the valve core 2.

[0074] When the electric explosion valve device is installed, the detonator 41 is first built into the accommodating cavity 1a, and then the valve core 2 is embedded into the accommodating cavity 1a. During the sliding process of the valve core 2, the air existing between the detonator 41 and the valve core 2 will hinder the valve core 2 from sliding into the accommodating cavity 1a. Therefore, as shown in Figure 1 and Figure 2 in some embodiments, the valve core 2 is sealingly matched with the inner wall of the accommodating cavity 1a; the valve body 1 is further provided with an exhaust hole, the exhaust hole is in communication with the accommodating cavity 1a and is arranged between the valve core 2 and the detonator 41; the electric explosion valve device further includes a sealing assembly 7, the sealing assembly 7 includes a sealing ball 71, the sealing ball 71 is inserted into the exhaust hole and is in interference fit with the exhaust hole.

[0075] The valve core 2 is in sealing fit with the inner wall of the accommodating cavity 1a, so that water cannot enter the accommodating cavity 1a to contact the detonator 41 through the valve core 2. When the valve core 2 slides into the accommodating cavity 1a, the gas between the valve core 2 and the detonator 41 is discharged from the accommodating cavity 1a through the exhaust hole, so that the gas cannot hinder the valve core 2 from sliding into the accommodating cavity 1a, and the valve core 2 can slide to a preset position of the valve body 1. After the valve core 2 slides to the preset position, the sealing ball 71 is embedded in the exhaust hole in order to close the exhaust hole. Since the sealing ball 71 is in interference fit with the exhaust hole, the sealing ball 71 can block the exhaust hole and be clamped in the exhaust hole. At the same time, the sealing ball 71 can be completely embedded in the exhaust hole, and no protruding part is formed outside the valve body 1.

[0076] It should be understood that the sealing between the valve core 2 and the inner wall of the accommodating cavity 1a can be achieved by fit, or by a sealing ring and a sealing filler, etc. Specifically, as shown in Figure 1 and Figure 2 in one of the embodiments, a sealing ring 8 is arranged on the peripheral wall of the valve core 2. The sealing ring 8 is connected to the valve core 2, and the outer ring is in fit with the inner wall of the accommodating cavity 1a. The sealing between the valve core 2 and the inner wall of the accommodating cavity 1a is achieved by the sealing ring 8.

[0077] As shown in Figure 1 and Figure 2 in some embodiments, the sealing assembly 7 further comprises a sealing filler 72. The sealing filler 72 is arranged in the exhaust hole and on the side of the sealing ball 71 away from the accommodating cavity 1a.

[0078] By arranging 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.

[0079] It should be understood that the sealing filler 72 can be an adhesive or a welding agent, etc.

[0080] When a detonator 41 matching the inner diameter of the accommodating cavity 1a is used, the detonator 41 is squeezed when loaded into the accommodating cavity 1a, which has certain safety risks. Therefore, as shown in Figure 1 and Figure 2 in some embodiments, the number of detonators 41 is two, and the two detonators 41 are arranged at the ends of the accommodating cavity 1a in a spaced manner. The detonator assembly 4 further comprises an ignition wire 43. The ignition wire 43 is connected to both of the detonators 41 and extends out of the valve body 1.

[0081] By setting two interval setting detonators 41, there is a gap between the two detonators 41, so that when the detonator 41 is loaded into the accommodating cavity 1a, the extrusion between the two detonators 41 and the inner wall of the accommodating cavity 1a can be avoided, and the safety risk of the extrusion is reduced. Secondly, the two detonators 41 are symmetrically distributed along the axis of the valve body 1, and when the detonator 41 is detonated, both of the two detonators 41 can apply a pushing force to the valve core 2, reducing the uneven force on the valve core 2. By setting the ignition wire 43, the ignition wire 43 can control the detonation of the detonator 41.

[0082] It should be understood that the ignition wire 43 can extend out of the valve body 1 from the side wall or end of the valve body 1. Specifically, as shown in Figure 1 and Figure 2 In one embodiment, the valve body 1 is provided with an opening and a wire hole communicating with the accommodating cavity 1a at the two axial ends, respectively. The nut 6 is arranged opposite the opening and is threadedly connected to the opening end of the valve body 1. The nut 6 is provided with an axial hole for the valve core 2 to partially pass out. The ignition wire 43 passes out of the valve body 1 through the wire hole.

[0083] In order to seal the wire hole of the accommodating cavity 1a and fix the two detonators 41 and the ignition wire 43, as shown in Figure 1 and Figure 2 Figure 1 Figure 2 In some embodiments, a curing layer 42 is arranged between the end inner wall of the accommodating cavity 1a, the gap between the two detonators 41 and the ignition wire 43.

[0084] After the curing of the curing layer 42, the end of the detonator 41 and the ignition wire 43 can be fixed to the end inner wall of the accommodating cavity 1a, and the ignition wire 43 passing through the wire hole is sealed.

[0085] It should be understood that the curing layer 42 can be formed by curing epoxy resin, curing of light-curing material, etc.

[0086] The above description of the specific embodiments of the present application does not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made in accordance with the technical concept of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. An electric explosion valve device, characterized in that, include: The valve body has a receiving cavity; The valve core is slidably disposed in the receiving cavity and has a through hole, the through hole intersecting the axis of the valve core; A cut-off pin is inserted into the through hole, and both ends are connected to the valve body; and A detonator assembly, including a detonator, wherein the detonator is housed within the receiving cavity; The valve core is sealed to the inner wall of the receiving cavity; The valve body is also provided with an exhaust port, which is connected to the receiving cavity and is located between the valve core and the detonator; The electric explosion valve device further includes a sealing assembly, which includes a sealing ball inserted into the vent hole and having an interference fit with the vent hole; The sealing assembly further includes a sealing filler disposed at the vent and on the side of the sealing ball opposite to the receiving cavity; the sealing filler may be an adhesive or a welding agent.

2. The electric explosion valve device according to claim 1, characterized in that: Both ends of the cutting pin are provided with annular cutting grooves, and the depth of the cutting grooves 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 located in the middle of the gap between the valve core and the inner wall of the receiving 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 has an annular limiting groove formed along its circumference; The electric explosion valve device also includes an elastic check element, which is connected to the valve core and can be inserted into the limiting groove to restrict the sliding of the valve core relative to the valve body after the limiting groove of the valve core cooperates with the elastic check element.

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 to the receiving cavity and penetrates the valve body. The second mounting hole is connected to the receiving 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 check element 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 number of detonators is two, and the two detonators are spaced apart at the end of the receiving cavity; The detonator assembly also includes an ignition wire, which is connected to both detonators and extends out of the valve body.

8. The electric explosion valve device according to claim 7, characterized in that: A curing layer is provided on the inner wall of the end of the receiving cavity and in the gap between the two detonators and the ignition wire.

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