An electrically exploding valve for cutting and crush sealing metal pipes

Abstract

The application discloses an electric explosion valve for cutting and extrusion sealing of a metal conduit, comprising a valve body, a gas generator and a slide valve; the electric explosion valve adopts the gas generator as a power source to drive the slide valve to cut the metal conduit; the gas generator is a mature pyrotechnic product, is driven by an electric signal, generates high-pressure gas to push the slide valve to act, and is single-acting, reliable and efficient; first and second step surfaces are adopted to extrude and seal the end portions of two metal conduit sections after cutting, cutting and extrusion sealing are almost simultaneously completed, leakage of a medium in the metal conduit is ensured to be small or even zero, and a pressure pipeline is not depressurized; and the application has a very simple structure and has the value of popularization and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of initiating explosive, in particular to an electric explosion valve for cutting and extrusion sealing of metal conduit. BACKGROUND

[0002] Metal conduit is widely used in conventional weapon system, aircraft, complex weapon system due to its strong pressure resistance, high plasticity and good flexibility, and is mainly applied in hydraulic, pneumatic, oil supply, gas supply pipeline system, and undertakes the functions of power transmission, medium transportation and control signal transmission.

[0003] Sub-munition weapon system is a kind of weapon which opens the cabin to throw out the submunition when the parent projectile carrying a certain number of submunitions flies to the predetermined throwing point to complete the damage target or other combat tasks. In some special application scenarios, there are hydraulic and pneumatic metal conduits between the submunition and the parent projectile, and the metal conduits need to be cut, sealed and separated during the throwing process, so as to reliably separate the submunition from the parent projectile and not interfere with each other, while ensuring that the hydraulic and pneumatic systems do not depressurize and the medium does not leak.

[0004] In weapon systems such as launch vehicle, series connection, parallel connection and other multi-stage schemes are commonly used, which can effectively improve the effective load capacity, but also produce the safety separation requirement of rocket core stage and boost stage. After the boost stage completes the function, it needs to be physically separated from the rocket core stage, and there is also a requirement for cutting, sealing and reliable separation of the metal conduits of the hydraulic, pneumatic and medium conveying systems.

[0005] In series follow-up penetration weapon systems, in order to reduce the interference to the rear weapon system before the front weapon system plays a role, physical separation of the front and rear weapon systems is needed to ensure that the rear weapon system can play an independent role. Therefore, there is also a requirement for cutting, sealing and reliable separation of the metal conduits of the hydraulic, pneumatic and control systems.

[0006] In the field of nuclear power, in order to realize the reliability of some auxiliary safety systems, multiple subsystems with the same function are connected in parallel, and are connected through hydraulic, pneumatic and medium conveying systems. When a certain subsystem fails, it needs to be physically separated from other normally functioning subsystems to reduce interference to the entire system, thereby requiring cutting, sealing and reliable separation of the metal conduits.

[0007] In summary, in the conventional weapon field and the industrial production field, there is a demand for cutting, sealing and reliable separation of metal conduits. In these application scenarios, a device is needed: which can safely and reliably cut the metal conduit; and can simultaneously reliably seal both ends of the cut conduit to ensure that the medium in the conduit leaks little or even not at all, and the pressure pipeline does not depressurize; small in size, light in weight, simple in control method; simple to install, and does not affect the assembly of the metal pipeline.

[0008] Therefore, it is necessary to develop an electric explosion valve for cutting and extruding metal conduits to solve the above problems. Summary of the Invention

[0009] The purpose of the present invention is to design an electric explosion valve for cutting and extruding and sealing metal conduits in order to solve the above problems.

[0010] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0011] An electric explosion valve for cutting and extruding metal conduits, comprising:

[0012] The valve body comprises a second through hole vertically provided in the valve body for passing a metal conduit therethrough; a second mounting hole, a second screw hole, and a mounting groove are transversely provided in the valve body along the central axis thereof, the second screw hole being in communication with the second mounting hole, and the height of the mounting groove being less than the diameter of the second mounting hole; a first step surface is provided on a first side of the second through hole, the first step surface being perpendicular to the central axis of the second mounting hole, the first side of the second through hole being in communication with the first end of the mounting groove, the second side of the second through hole being in communication with the second mounting hole, and the second side of the second through hole being arranged opposite to the first side;

[0013] Gas generator; the gas generator is installed in the second screw hole;

[0014] The sliding valve comprises a first portion and a second portion, wherein the first end of the first portion is connected to the first end of the second portion; the first portion is slidably mounted in the second mounting hole; second step surfaces are provided on the first end surface of the first portion and above and below the second portion; the gas drive end of the gas generator is provided near the second end of the first portion; a blade for cutting a metal conduit is provided on the second portion; after the first portion has cut the metal conduit, it is completely placed in the mounting groove, and the first step surface and the second step surface cooperate to extrude and seal the end of the cut metal conduit.

[0015] The beneficial effects of the present invention are:

[0016] A gas generator is used as a power source to drive a slide valve to cut the metal conduit; the gas generator is a mature pyrotechnic device, driven by an electrical signal, to generate high-pressure gas to push the slide valve to move, with a single action, reliable and efficient; and a first step surface and a second step surface are used to cooperate to extrude and seal the ends of the two sections of the cut metal conduit, achieving almost simultaneous completion of cutting and extrusion sealing, ensuring little or no leakage of the medium in the metal conduit, and no pressure relief in the pressure pipeline; and the structure of this application is extremely simple, and has value for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an axial side view of the electric explosion valve of the present invention;

[0018] Figure 2 This is an axial side view (bottom direction) of the electric explosion valve of the present invention;

[0019] Figure 3 It is a top view of the electric explosion valve of the present invention;

[0020] Figure 4 This is a cross-sectional view of the electric explosion valve of the present invention (before the gas generator is activated);

[0021] Figure 5 This is a cross-sectional view of the electric explosion valve of the present invention (after the gas generator is activated);

[0022] Figure 6 This is a cross-sectional view of the electric explosion valve of the present invention (after the sales promoter is activated);

[0023] Figure 7 is a cross-sectional view of the valve body;

[0024] Figure 8 It is a bottom view of the valve body;

[0025] Figure 9 This is the axial view of the slide valve;

[0026] Figure 10 This is the axonometric view of the salesman (before action);

[0027] Figure 11 This is the axial view of the salesman (after action);

[0028] Figure 12 This is a schematic diagram of the structure of the metal conduit (before cutting);

[0029] Figure 13 Schematic diagram of the structure of the metal conduit (after cutting).

[0030] In the figure: 1-gas generator, 2-slide valve, 21-first part, 22-second part, 23-second step surface, 24-knife edge, 3-valve body, 31-second through hole, 32-first screw hole, 33-second screw hole, 34-first mounting hole, 35-second mounting hole, 36-mounting groove, 37-first step surface, 4-propelling device, 41-pin, 5-base plate, 51-first through hole, 6-metal conduit. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0032] The following detailed description of the embodiments of the application in the drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. Based upon the embodiments of the application, all other embodiments that would be obvious to one of ordinary skill in the art based upon the present application are within the scope of the application.

[0033] It should be noted that similar reference numbers and characters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0034] In the description of the application, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are only used to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0035] In addition, the terms "first", "second", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0037] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0038] As shown in Figure 1-13 An electrically detonated valve for cutting and crush sealing of metal pipes, comprising:

[0039] The valve body 3; a second through hole 31 for passing the metal conduit 6 is vertically provided in the valve body 3; a second mounting hole 35, a second screw hole 33, and a mounting groove 36 are provided in the valve body 3 transversely and coaxially with the central axis. The second screw hole 33 is in communication with the second mounting hole 35, and the height of the mounting groove 36 is less than the diameter of the second mounting hole 35; a first step surface 37 is provided on a first side of the second through hole 31, and the first step surface 37 is perpendicular to the central axis of the second mounting hole 35. The first side of the second through hole 31 is in communication with the first end of the mounting groove 36, and the second side of the second through hole 31 is in communication with the second mounting hole 35. The second side of the second through hole 31 is arranged opposite to the first side.

[0040] Gas generator 1; Gas generator 1 is installed in the second screw hole 33;

[0041] Sliding valve 2; the sliding valve 2 includes a first portion 21 and a second portion 22, wherein a first end of the first portion 21 is connected to a first end of the second portion 22; the first portion 21 is slidably mounted in a second mounting hole 35; a second step surface 23 is provided on a first end surface of the first portion 21, and above and below the second portion 22; the gas drive end of the gas generator 1 is provided near the second end of the first portion 21; a blade 24 for cutting the metal conduit 6 is provided on the second portion 22; after the first portion 21 has cut the metal conduit 6, it is completely placed in the mounting groove 36, and the first step surface 37 and the second step surface 23 cooperate to squeeze and seal the end of the cut metal conduit 6.

[0042] like Figure 7 and 9 As shown, in some embodiments, the second portion 22 and the mounting slot 36 do not rotate together. Specifically, the second portion 22 is formed into a rectangular parallelepiped shape, and correspondingly, the mounting slot 36 is a rectangular parallelepiped groove. The rectangular parallelepiped shape here refers to a typical rectangular parallelepiped shape. Curvatures on both sides of the rectangular parallelepiped (for ease of processing) do not affect functionality.

[0043] like Figure 4-7 As shown in FIG9 , in some embodiments, the blade 24 is a C-shaped blade 24 , which is disposed on one side of the second portion 22 , the metal conduit 6 is placed in the C-shaped blade 24 before cutting, and the second end of the second portion 22 is placed in the mounting groove 36 .

[0044] like Figure 9 As shown, in some embodiments, the first portion 21 is formed into a barrel-shaped structure, and the second end of the first portion 21 is open.

[0045] like Figure 3-7As shown in Figures 10 and 11, in some embodiments, the electric explosion valve further includes a push-pull device 4. A first screw hole 32 and a first mounting hole 34 are further provided in the slide valve 2. The first screw hole 32, the first mounting hole 34, and the mounting groove 36 are arranged on the same central axis. The first end of the first mounting hole 34 is connected to the second end of the mounting groove 36, and the second end of the first mounting hole 34 is connected to the first screw hole 32. The push-pull device 4 is installed in the first screw hole 32. The pin 41 of the push-pull device 4 is retractably placed in the first mounting hole 34. Before the metal conduit 6 is cut, the second end of the second part 22 is flush with the second end of the mounting groove 36. After the metal conduit 6 is cut, the second end of the second part 22 is placed in the first mounting hole 34. The pin 41 of the push-pull device 4 is used to push the second part 22 to reset. The first screw hole 32 and the second screw hole 33 are both M10 threaded holes.

[0046] like Figure 1 and 3 As shown in Figures 7 and 8 , in some embodiments, the third side of the second through hole 31 is open, with the width of the opening greater than the diameter of the metal conduit 6. The third side of the second through hole 31 is perpendicular to the first side. The upper and lower ends of the second through hole 31 are both chamfered, facilitating thorough separation of the metal conduit 6 after cutting. During installation, the metal conduit 6 can be positioned so that the opening is inserted into the metal conduit 6 without changing the original assembly of the metal conduit 6. Alternatively, the metal conduit 6 to be cut and sealed can be inserted from the opening.

[0047] like Figure 1 and 2 As shown, in some embodiments, the electric explosion valve is mounted on a substrate 5, a first through hole 51 is provided on the substrate 5, the diameter of the first through hole 51 is not less than the diameter of the second through hole 31, the valve body 3 is mounted on the substrate 5 by screws (there is an M5 screw hole on the bottom surface of the valve body 3, which can be fixed from the bottom surface of the substrate 5 by an M5 countersunk screw), and the first through hole 51 and the second through hole 31 are arranged on the same central axis.

[0048] like Figure 4 As shown, in some embodiments, the movement stroke of the push promoter 4 does not exceed the length of the first mounting hole 34 of φ7. The slide valve 22 is inserted from the second mounting hole 35 of φ7 at the right end.

[0049] like Figure 5 The figure shows a cross-sectional view of the electric explosion valve (after gas generator 1 is activated). When gas generator 1 receives the activation signal, it generates gas that pushes slide valve 2, causing its blade 24 to cut through metal conduit 6. After the metal conduit 6 is severed, slide valve 2 continues to move forward. The second step surface 23 of slide valve 2 and the first step surface 37 of valve body 3 jointly compress the metal conduit 6, sealing it tightly against the conduit wall.

[0050] Figure 6Figure 2 shows a cross-sectional view of the electric explosion valve (after activation of the salesman 4). Once the slide valve 2 has moved into position, cutting and sealing the metal conduit 6, the metal conduit 6, valve body 3, and slide valve 2 are easily interlocked due to the flexibility of the material, hindering separation of the metal conduit 6. Therefore, 20-30 milliseconds after the gas generator 1 activates, the salesman 4 receives the activation command, and the pin 41 pushes the slide valve 2 forward and in the opposite direction, returning it to its original position and releasing the constraint on the metal conduit 6. After the electric explosion valve has fully activated, the metal conduit 6 is cut into two sections, each sealed and independent of any constraints, achieving complete physical separation.

[0051] Figure 7 , which is a cross-sectional view of the valve body 3. The valve body 3 is made of stainless steel.

[0052] Figure 8 , which is a bottom view of the valve body 3. The valve body 33 is open on the side, and the opening width is greater than the diameter of the metal conduit 6.

[0053] Figure 9 The figure shows an axial side view of the slide valve 2. The slide valve 22 is made of carbide. The first section 21 is a φ7 cylindrical segment that acts as a piston to withstand the gas pressure, generating forward force to cut the metal conduit 6. The second section 22 is rectangular and fits into the rectangular mounting groove 36 on the valve body 3. A C-shaped blade 24 on the second section 22 ensures reliable cutting.

[0054] Figure 10 , Figure 11 As shown, the state of the pin shaft of the push-sales device 4 before and after being pushed out, the stroke is 5mm, which meets the reset requirement of the slide valve 22.

[0055] Figure 12 As shown, it is a metal conduit 6. When the sealing requirement is higher, a special inner-plated conduit can be used. The inner wall of the conduit is plated with a flexible material, which can improve the sealing effect when the conduit is squeezed and closed.

[0056] Figure 13 The figure shows the metal conduit 6 after being cut and sealed. The metal conduit 6 is cut, the cut is squeezed and sealed, and is reliably separated.

[0057] The electric explosion valve of the present application is disposable and is designed based on mature pyrotechnics. A gas generator 1 is used to push the slide valve 2 to cut the metal conduit 6, and the step surface on the slide valve 2 is used to squeeze the conduit cut to achieve a sealing effect. A pusher 4 is used to push the slide valve 2 to reset, and release the constraint on the metal conduit 6 formed by the slide valve 2 during the process of squeezing the conduit. The electric explosion valve can cut, seal and separate metal conduits 6 with a diameter of 3-10mm. The wall thickness of the metal conduit 6 does not exceed 2mm, the pressure in the pipeline does not exceed 10MPa, and the medium in the pipeline is not a flammable or explosive substance. After the valve cuts the metal conduit 6, the metal conduit 6 can be disengaged from the valve body 3 along the third side opening direction of the second through hole 31, and can also be separated from the valve body 3 along the direction of the second through hole 31.

[0058] This application utilizes a pusher 4 as an auxiliary power source to push the spool valve 2 back into position and release its restraint on the metal conduit 6. The spool valve 2 cuts and squeezes the metal conduit 6. Due to its high flexibility, the metal conduit 6 easily adheres to the spool valve 2's cutting edge 24 and stepped surface, hindering reliable separation. Therefore, the pusher 4 is required to push the spool valve 2 back into position and release the restraint. The pin movement of the pusher 4 matches the cutting and squeezing stroke of the spool valve 2, ensuring a complete return of the spool valve 2.

[0059] When installing the electric explosion valve and the equipment, first select the cut and separated part of the metal conduit 6, then insert the electric explosion valve into the metal conduit 6 from the C-shaped opening on the side, fix it to the equipment foundation through the threaded hole at the bottom of the electric explosion valve, and finally connect the sales promoter 4 and the detonating cable of the gas generator 1.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An electric explosion valve for cutting and extrusion sealing of metal conduits, characterized in that: include: The valve body comprises a second through hole vertically provided in the valve body for passing a metal conduit therethrough; a second mounting hole, a second screw hole, and a mounting groove are transversely provided in the valve body along the central axis thereof, the second screw hole being in communication with the second mounting hole, and the height of the mounting groove being less than the diameter of the second mounting hole; a first step surface is provided on a first side of the second through hole, the first step surface being perpendicular to the central axis of the second mounting hole, the first side of the second through hole being in communication with the first end of the mounting groove, the second side of the second through hole being in communication with the second mounting hole, and the second side of the second through hole being arranged opposite to the first side; Gas generator; the gas generator is installed in the second screw hole; The sliding valve comprises a first portion and a second portion, wherein the first end of the first portion is connected to the first end of the second portion; the first portion is slidably mounted in the second mounting hole; second step surfaces are provided on the first end surface of the first portion and above and below the second portion; the gas drive end of the gas generator is provided near the second end of the first portion; a blade for cutting a metal conduit is provided on the second portion; after the first portion has cut the metal conduit, it is completely placed in the mounting groove, and the first step surface and the second step surface cooperate to extrude and seal the end of the cut metal conduit.

2. The electric explosion valve for cutting and extruding and sealing metal conduits according to claim 1, characterized in that: The second portion and the mounting slot are non-rotatably engaged.

3. The electric explosion valve for cutting and extruding and sealing metal conduits according to claim 2, characterized in that: The second portion is formed in a rectangular parallelepiped shape, and correspondingly, the mounting groove is a rectangular parallelepiped groove.

4. The electric explosion valve for cutting and extruding and sealing metal conduits according to claim 3, characterized in that: The blade is a C-shaped blade, which is arranged on one side of the second part. The metal conduit is placed in the C-shaped blade before cutting, and the second end of the second part is placed in the installation groove.

5. The electric explosion valve for cutting and extruding and sealing metal conduits according to claim 1, characterized in that: The first part is formed into a barrel-shaped structure, and the second end of the first part is opened.

6. The electric explosion valve for cutting and extruding and sealing a metal conduit according to claim 1, characterized in that: The electric explosion valve also includes a sales pusher. A first screw hole and a first mounting hole are also provided in the valve body. The first screw hole, the first mounting hole and the mounting groove are arranged on the same central axis. The first end of the first mounting hole is connected with the second end of the mounting groove, and the second end of the first mounting hole is connected with the first screw hole. The sales pusher is installed in the first screw hole, and the pin of the sales pusher is retractably placed in the first mounting hole. Before the metal conduit is cut, the second end of the second part is flush with the second end of the mounting groove. After the metal conduit is cut, the second end of the second part is placed in the first mounting hole, and the pin of the sales pusher is used to push the second part to reset.

7. The electric explosion valve for cutting and extruding and sealing metal conduits according to claim 1, characterized in that: The third side of the second through hole is open, the width of the opening is greater than the diameter of the metal conduit, and the third side of the second through hole is perpendicular to the first side.

8. The electric explosion valve for cutting and extruding and sealing metal conduits according to claim 1, characterized in that: The upper and lower ends of the second through hole are both configured as inner chamfer structures.

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