An ignition jet initiation device

Abstract

The present invention discloses an ignition jet detonator. The device comprises: a base, in which a hydraulic rod is slidably disposed, a hydraulic membrane being disposed between the head and tail ends of the hydraulic rod, and a hydraulic spring being disposed between the hydraulic rod and the base; the tail end of the hydraulic rod being in airtight sliding engagement with a flameproof plate; a detonation transmission seat, the top of which is fixedly connected to the base; the flameproof plate being disposed within the detonation transmission seat; a torsion spring being disposed within the detonation transmission seat to enable the flameproof plate to rotate, one end of which is connected to the bottom end of the detonation transmission seat and the other end to the flameproof plate; a detonator being disposed on the flameproof plate and within the base; a detonator column corresponding to the detonator being disposed below the flameproof plate and within the detonation transmission seat; an expansion seat, the top of which is fixedly connected to the detonation transmission seat; an expansion column being disposed within the expansion seat; a charge plate being disposed at the top of the expansion column and a charge liner being disposed at the bottom; and a main charge capable of being detonated being disposed outside the charge liner. The device uses purely mechanical components to achieve detonation transmission, resulting in a simple structure and easy maintenance. The dual detonator design improves the reliability of detonation.

Description

Technical Field

[0001] The present invention relates to the technical field of initiation, and in particular to an ignition jet initiation device. Background Art

[0002] Underwater operations such as dam demolition, seabed drilling, and shipwreck removal require the use of underwater blasting equipment for engineering applications. This involves the detonation of explosives (main charge). A typical detonation sequence involves the sequential actions of detonators, explosion-proof components, pilot charges, booster tubes, and main charge. Practical operations also involve safety requirements, ensuring the integrity of products and the safety of personnel during transportation and storage. Existing detonators often use manual remote activation with high voltage, and are often used in land-based blasting, such as mine blasting and building demolition. This method is simple to use but not suitable for underwater operations. Some underwater operations use high-voltage detonation, which requires a large amount of energy, such as batteries, as initial energy. A booster circuit is used to generate high voltage for detonation, resulting in complex structure and high energy requirements. Some use columnar boosters, but when the scene is large, there is a problem of incomplete detonation.

[0003] The existing technology uses high-voltage initiation, which requires a lot of energy as initial energy. The use of a boost circuit to generate high voltage and then excite has a complex structure and large energy demand. When using columnar explosives, when the scene is relatively large, there is a problem of incomplete detonation. No effective solution has been proposed so far. Summary of the Invention

[0004] An ignition jet detonator is provided in an embodiment of the present invention to solve the problem in the prior art that high-voltage detonation requires a large amount of energy as initial energy, a boost circuit is used to generate high voltage to excite, the structure is complex and the energy demand is large, and when columnar explosives are used, when the scene is relatively large, there is a problem that complete detonation cannot be performed.

[0005] To achieve the above-mentioned purpose, the present invention provides an ignition jet detonating device, which includes: a base, a hydraulic rod slidably arranged in the base, a hydraulic membrane arranged between the head end and the tail end of the hydraulic rod, the hydraulic rod being air-tightly connected to the base through the hydraulic membrane; a hydraulic spring arranged between the hydraulic rod and the base; the tail end of the hydraulic rod being air-tightly slidably matched with the explosion-proof plate; an explosion-transmitting seat, the top end of the explosion-transmitting seat being fixedly connected to the bottom end of the base; the explosion-proof plate being air-tightly connected in the explosion-transmitting seat and at the top end of the explosion-transmitting seat; A torsion spring is provided for rotating the explosion-proof plate, one end of the torsion spring is connected to the bottom end of the explosion-transmitting seat, and the other end is connected to the explosion-proof plate; a detonator is provided on the explosion-proof plate and located in the base; an explosive column is provided under the explosion-proof plate and located in the explosion-transmitting seat; the explosive column is provided corresponding to the detonator; an expansion seat, the top end of the expansion seat is fixedly connected to the bottom end of the explosion seat; an explosive column is provided in the expansion seat; a charge plate is provided at the top end of the explosive column; a charge cover is provided at the bottom end of the explosive column; a main charge that can be detonated is provided outside the charge cover.

[0006] Optionally, it also includes: a cover plate; the cover plate is arranged in the base and is airtightly connected to the head end of the base; a water inlet hole is provided on the cover plate; the cover plate and the water pressure membrane are spaced apart to form a water pressure space.

[0007] Optionally, a socket is provided at the head end of the hydraulic rod for inserting a pull pin to limit the hydraulic rod; the pull pin is located on the cover plate.

[0008] Optionally, the base includes a head end section, a tail end section and a connecting section, the head end section is a cylindrical structure, the tail end section is a cylindrical structure, the connecting section is a cylindrical structure, the outer diameter of the tail end section is smaller than the outer diameter of the connecting section, and the outer diameter of the connecting section is smaller than the outer diameter of the head end section; a clamping component is provided in the connecting section for pressing the outer edge of the water pressure membrane.

[0009] Optionally, the clamping assembly includes an annular inner clamping plate abutting against the outer edge of the head end of the water pressure membrane, an inner pressure ring for pressing the inner clamping plate, an annular outer clamping plate abutting against the outer edge of the tail end of the water pressure membrane, and an outer pressure ring for pressing the outer clamping plate.

[0010] Optionally, a sealing ring is installed on the outer circle of the head end of the connecting section.

[0011] Optionally, the protrusion at the tail end of the hydraulic rod fits into the notch of the explosion-proof plate to limit the rotation of the explosion-proof plate.

[0012] Optionally, a threading hole is provided at the head end of the detonator for passing the detonating cable of the detonator through.

[0013] Optionally, two detonators are provided, and two explosive charge columns are provided correspondingly.

[0014] Optionally, the top end of the detonation transmission seat is fixedly connected to the bottom end of the base by a first screw; the top end of the explosion expansion seat is fixedly connected to the bottom end of the detonation transmission seat by a second screw.

[0015] Beneficial effects of the present invention:

[0016] The present invention provides an ignition jet detonator. This device utilizes external water pressure as a driving force to push a hydraulic membrane, driving the hydraulic rod to move, thereby releasing the limit of the explosion-proof plate. The explosion-proof plate rotates under the action of a torsion spring, causing the detonator to move downward and align with the booster charge. When a detonator ignition signal is given, the detonator activates, detonating the booster charge, which in turn triggers the explosion of the expansion charge. When the expansion charge explodes, the liner is squeezed into a metal jet, detonating the main charge. This device uses purely mechanical components to achieve detonation and transmission, resulting in a simple structure and easy maintenance. The dual detonator design improves the reliability of detonation. The conical expansion charge and the liner enable the production of a high-temperature, high-pressure metal jet, which in turn detonates the main charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an ignition jet detonator provided by an embodiment of the present invention when it is not in operation;

[0018] Figure 2 The figure is a schematic structural diagram of an ignition jet detonator provided by an embodiment of the present invention when in operation.

[0019] Explanation of symbols:

[0020] Base-1, detonator seat-2, expansion seat-3, hydraulic rod-4, hydraulic membrane-5, hydraulic spring-6, explosion-proof plate-7, torsion spring-8, detonator-9, detonator charge-10, expansion charge-11, charge baffle-12, charge liner-13, cover-14, water inlet-15, pull pin-16, inner compression plate-17, inner pressure ring-18, outer compression plate-19, outer pressure ring-20, sealing ring-21, threading hole-22, first screw-23, second screw-24. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0022] Underwater operations such as dam demolition, seabed drilling, and shipwreck removal require the use of underwater blasting equipment for engineering applications. This involves the detonation of explosives (main charge). A typical detonation sequence includes the detonator 9, explosion-proof components, pilot charge, booster tube, and main charge, all following in sequence. Practical operations also involve safety requirements, ensuring the integrity of the product and the safety of personnel during transportation and storage. Existing detonators often use manual remote high-voltage activation, and are often used in land-based blasting, such as mine blasting and building demolition. This method is simple to use but not suitable for underwater operations. Some underwater operations use high-voltage detonation, which requires a large amount of energy, such as a battery pack, as initial energy. A booster circuit is used to generate high voltage for activation, resulting in a complex structure and high energy requirements. Some use columnar boosters, but when the scene is large, there is a problem of incomplete detonation.

[0023] Therefore, the present invention provides an ignition jet initiation device, Figure 1 FIG. 1 is a schematic diagram of the structure of an ignition jet detonator provided by an embodiment of the present invention when the ignition jet detonator is not in operation. Figure 1 As shown, the device includes:

[0024] 1. Base 1

[0025] The base 1 adopts a multi-section structure, and each section constituting the base 1 adopts a cylindrical structure.

[0026] Specifically, the base 1 includes a head end section, a tail end section and a connecting section, the head end section is a cylindrical structure, the tail end section is a cylindrical structure, the connecting section is a cylindrical structure, the outer diameter of the tail end section is smaller than the outer diameter of the connecting section, and the outer diameter of the connecting section is smaller than the outer diameter of the head end section; further, the base 1 is an integrated structure.

[0027] A hydraulic rod 4 is slidably mounted within the base 1. The hydraulic rod 4 is a rod-like component that, along its axial direction, comprises a rod head, a rod shaft, and a rod tail. The rod head is positioned outside the head end section, the rod shaft is positioned within the entire base 1, and the rod tail is positioned outside the tail end section. A socket is provided at the head end of the hydraulic rod 4 for inserting a pull pin 16 to limit the position of the hydraulic rod 4.

[0028] A hydraulic membrane 5 is provided between the head and tail ends of the hydraulic rod 4 (i.e., the rod body). The hydraulic membrane 5 is an elastic conical annular sheet (e.g., a thin metal sheet, plastic sheet, or rubber sheet). The hydraulic membrane 5 protrudes outward in the direction from the tail end of the hydraulic rod 4 to its head end, and the head end of the hydraulic rod 4 passes through the central hole of the hydraulic membrane 5. A clamping assembly for pressing the outer edge of the hydraulic membrane 5 is provided in the connecting section, that is, the hydraulic membrane 5 is pressed against the hydraulic rod 4 by the clamping assembly. The hydraulic rod 4 is airtightly connected to the base 1 (specifically, the inner circle of the connecting section) via the hydraulic membrane 5. Furthermore, the compression assembly includes an annular inner compression piece 17 that abuts against the outer edge of the head end of the hydraulic membrane 5, an inner pressure ring 18 for pressing the inner compression piece 17, an annular outer compression piece 19 that abuts against the outer edge of the tail end of the hydraulic membrane 5, and an outer pressure ring 20 for pressing the outer compression piece 19. The inner pressure ring 18 and the outer pressure ring 20 are hard pressure rings (e.g., metal pressure rings or hard plastic pressure rings) and are an integrated structure.

[0029] A hydraulic spring 6 is provided between the hydraulic rod 4 and the base 1. Specifically, an annular sleeve of the hydraulic rod 4 is fixedly provided on the hydraulic rod 4. The annular sleeve of the hydraulic rod 4 is provided at the position of the rod body. A base 1 step is provided inside the base 1. The hydraulic spring 6 is provided on the hydraulic rod 4 and compressed between the annular sleeve of the hydraulic rod 4 and the base 1 step. In this way, the hydraulic spring 6 can exert an axial thrust on the hydraulic rod 4.

[0030] The tail end of the hydraulic rod 4 is in airtight sliding engagement with the explosion-proof panel 7. Specifically, the explosion-proof panel 7 is a flat plate whose width is much smaller than the diameter of the base 1, i.e., the flat plate cannot completely fill the inner cavity of the base 1. The protrusion at the tail end of the hydraulic rod 4 fits into the notch of the explosion-proof panel 7, thereby limiting the rotation of the explosion-proof panel 7. In other words, the tail end of the hydraulic rod 4 is a cylindrical structure with a diameter slightly larger than the diameter of the rod above it. In this way, when the hydraulic rod 4 moves downward, the rotation limit on the explosion-proof panel 7 can be released.

[0031] In an optional embodiment, a sealing ring 21 is installed on the outer circle of the head end of the connecting section.

[0032] 2. Cover plate 14

[0033] The cover plate 14 is arranged in the base 1 and is airtightly connected to the head end (head end section) of the base 1; a water inlet hole 15 is provided on the cover plate 14; and a water pressure space is formed between the cover plate 14 and the water pressure membrane 5.

[0034] In this way, when the water reaches a certain depth, water can flow into the hydraulic membrane 5 through the water inlet hole 15, that is, under the action of external water pressure, the hydraulic membrane 5 will drive the hydraulic rod 4 to move downward. At this time, the rotation limit of the explosion-proof plate 7 can be released.

[0035] Furthermore, a socket is provided at the head end of the hydraulic rod 4 for inserting a pull pin 16 to limit the position of the hydraulic rod 4; the pull pin 16 is located on the cover plate 14. Once the hydraulic rod 4 reaches a certain depth in the water, the pull pin 16 can be removed. This design further prevents the hydraulic rod 4 from automatically moving downward due to external influences when not submerged.

[0036] 3. Booster Block 2

[0037] The top of the detonation seat 2 is fixedly connected to the bottom of the base 1 (the top of the detonation seat 2 is fixedly connected to the bottom of the base 1 by a first screw 23); the explosion-proof plate 7 is airtightly connected inside the detonation seat 2 and at the top of the detonation seat 2; a torsion spring 8 is provided in the detonation seat 2 to enable the explosion-proof plate 7 to rotate (the torsion spring 8 can generate torque and rotational force), one end of the torsion spring 8 is connected to the bottom end of the detonation seat 2, and the other end is connected to the explosion-proof plate 7; a detonator 9 is provided on the explosion-proof plate 7 and located in the base 1 (tail end section); an explosive column 10 is provided under the explosion-proof plate 7 and located in the detonation seat 2; the explosive column 10 is arranged corresponding to the detonator 9 (when the entire device is not in operation, the detonator 9 is placed on the explosion-proof plate 7. When the entire device is in operation, the explosion-proof plate 7 rotates, and the detonator 9 falls on its bottom surface and contacts the top surface of the explosive column 10)

[0038] A wire threading hole 22 is provided at the head end of the detonator 9 for passing the detonating cable of the detonator 9 through; the detonating cable is electrically connected to the controller inside the product. When the detonator 9 (explosive material) needs to be activated, the controller gives an ignition current, which is transmitted to the detonator 9 through the detonating cable to activate the detonator 9.

[0039] Furthermore, in order to improve the reliability of detonation, two detonators 9 are provided, and two booster charges 10 are provided correspondingly.

[0040] 4. Expansion Block 3

[0041] The top of the explosive expansion seat 3 is fixedly connected to the bottom of the explosive transmission seat 2 (the top of the explosive expansion seat 3 is fixedly connected to the bottom of the explosive transmission seat 2 by a second screw 24); an explosive column 11 is provided in the explosive expansion seat 3 (the explosive column 11 is a conical structure); a baffle plate 12 is provided at the top of the explosive column 11 (the baffle plate 12 is provided in the head end of the explosive expansion seat 3 and is airtightly connected to the head end of the explosive expansion seat 3); the explosive column 11 is provided with a baffle plate 12 ... A charge liner 13 is provided at the bottom end of the column 11 (it is a copper-based powder metallurgy perforating ammunition liner 13. It is based on fine copper powder or 6-6-3 copper powder, with an appropriate amount of metal powder, non-metallic powder or other alloy powder and a forming agent, and is made by mixing, pressing, sintering and finishing); the charge liner 13 is a conical structure, and the charge liner 13 is completely fitted with the bottom end of the explosive column 11; a main charge that can be detonated is provided outside the charge liner 13.

[0042] The powder baffle 12 is equivalent to a layer of hard paper for isolation, which prevents the explosive column 10 and the explosive column 11 from directly contacting each other, avoids friction and detonation of the explosive column 11, and ensures safety.

[0043] When the detonator 9 receives the ignition signal, it activates, detonating the booster charge 10. This in turn detonates the charge baffle 12 and the expansion charge 11. Under the influence of the high-temperature, high-pressure expansion charge 11, the liner 13 forms a metal rod, which possesses the physical characteristics of a metallic fluid, but is still a cluster of small metal particles. At this point, a slender metal jet forms on the inner surface of the liner 13, detonating the main charge outside the liner 13.

[0044] The present invention is described below by a specific embodiment:

[0045] like Figure 1 As shown, during installation, the hydraulic membrane 5 is fixed to the hydraulic rod 4 with the inner compression piece 17 and the inner pressure ring 18, the hydraulic spring 6 is installed into the inner hole of the base, the hydraulic membrane 5 is fixed to the base with the outer compression piece 19 and the outer pressure ring 20, the cover plate 14 is installed to the upper side of the base, and the pull pin 16 is inserted; the detonator 9 is installed into the inner hole of the base, the detonating cable of the detonator 9 is passed through the threading hole 22, and the explosion-proof plate 7 is installed to ensure that its notch is engaged with the protrusion of the hydraulic rod 4; the torsion spring 8 is installed Install it into the inner cavity of the detonating seat 2, rotate it until the detonating seat 2 is aligned with the threaded hole of the base, and then connect the detonating seat 2 to the base through the first screw 23; install two explosive columns 10 into the detonating seat 2; install the explosive plate 12 on the bottom end face of the explosive column 10; install the conical explosive column 11 into the explosive column 3, install the explosive cover at the tail end of the explosive column 11, and fix the explosive column 3 to the detonating seat 2 through the second screw 24 to complete the installation of the detonating device.

[0046] Figure 2FIG. 1 is a schematic structural diagram of an ignition jet detonator provided by an embodiment of the present invention when in operation. Figure 2 As shown:

[0047] Before entering the water, remove the pull pin 16 to release the pre-launch safety. After reaching a certain depth, the hydraulic membrane 5, under the action of external water pressure, drives the hydraulic rod 4 downward, releasing the rotation limit of the explosion-proof plate 7. The explosion-proof plate 7 rotates under the preload of the torsion spring 8, causing the detonator 9 to move downward and align with the top surface of the booster charge 10, completing the preparation of the detonator. When the detonator 9 is given an ignition signal, the detonator 9 activates, detonating the booster charge 10, which in turn triggers the explosion of the expansion charge 11. Under the action of the high temperature and high pressure expansion charge 11, the liner 13 generates a metal jet to excite the main charge.

[0048] Beneficial effects of the present invention:

[0049] The present invention provides an ignition jet detonator. This device utilizes external water pressure as a driving force to push a hydraulic membrane 5, which in turn drives a hydraulic rod 4 to move, thereby releasing the limit of a flameproof plate 7. The flameproof plate 7 rotates under the action of a torsion spring 8, thereby causing a detonator 9 to move downward and align with a booster charge 10. When an ignition signal is given to the detonator 9, the detonator 9 activates, detonating the booster charge 10, which in turn triggers the explosion of the expansion charge 11. When the expansion charge 11 explodes, the charge liner 13 is squeezed into a metal jet, detonating the main charge. This device uses purely mechanical components to achieve detonation and transmission, resulting in a simple structure and easy maintenance. The dual detonator 9 design improves the reliability of detonation. The conical expansion charge 11 and the charge liner enable the production of a high-temperature, high-pressure metal jet, which in turn detonates the main charge.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An ignition jet detonator, characterized in that: include: A base, wherein a hydraulic rod is slidably provided in the base, a hydraulic membrane is provided between the head end and the tail end of the hydraulic rod, and the hydraulic rod is airtightly connected to the base through the hydraulic membrane; a hydraulic spring is provided between the hydraulic rod and the base; the tail end of the hydraulic rod is airtightly slidably fitted with the explosion-proof plate; A detonation seat, wherein the top of the detonation seat is fixedly connected to the bottom of the base; the explosion-proof plate is airtightly connected to the top of the detonation seat; a torsion spring is provided in the detonation seat to enable the explosion-proof plate to rotate, one end of the torsion spring is connected to the bottom of the detonation seat, and the other end is connected to the explosion-proof plate; a detonator is provided on the explosion-proof plate and located in the base; an explosive charge is provided below the explosion-proof plate and located in the detonation seat; the explosive charge is provided corresponding to the detonator; An expansion seat, wherein the top of the expansion seat is fixedly connected to the bottom of the transmission seat; an expansion charge column is arranged in the expansion seat; a charge baffle is arranged at the top of the expansion charge column; a charge liner is arranged at the bottom of the expansion charge column; and a main charge that can be detonated is arranged outside the charge liner; A cover plate is provided in the base and is airtightly connected to the head end of the base; a water inlet hole is provided on the cover plate; a hydraulic space is formed between the cover plate and the hydraulic membrane; The base includes a head end section, a tail end section and a connecting section, the head end section is a cylindrical structure, the tail end section is a cylindrical structure, the connecting section is a cylindrical structure, the outer diameter of the tail end section is smaller than the outer diameter of the connecting section, and the outer diameter of the connecting section is smaller than the outer diameter of the head end section; a pressing assembly for pressing the outer edge of the hydraulic membrane is provided in the connecting section; The clamping assembly includes an annular inner clamping piece that abuts against the outer edge of the head end of the hydraulic membrane, an inner pressure ring for pressing the inner clamping piece, an annular outer clamping piece that abuts against the outer edge of the tail end of the hydraulic membrane, and an outer pressure ring for pressing the outer clamping piece.

2. The device according to claim 1, characterized in that: A socket is provided at the head end of the hydraulic rod for inserting a pull pin to limit the hydraulic rod; the pull pin is located on the cover plate.

3. The device according to claim 1, characterized in that: A sealing ring is installed on the outer circle of the head end of the connecting section.

4. The device according to claim 1, characterized in that: The protrusion at the tail end of the hydraulic rod fits into the notch of the explosion-proof plate to limit the rotation of the explosion-proof plate.

5. The device according to claim 1, characterized in that: A threading hole is provided at the head end of the detonator for passing the detonating cable of the detonator.

6. The device according to claim 1, characterized in that: There are two detonators, and two explosive booster columns are correspondingly provided.

7. The device according to claim 1, characterized in that: The top end of the explosion-transmitting seat is fixedly connected to the bottom end of the base by a first screw; The top end of the explosion expansion seat and the bottom end of the explosion transmission seat are fixedly connected by a second screw.

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