Underwater timing detonation device

Abstract

The invention discloses an underwater timing detonating device. The underwater timing detonating device comprises an energy-gathered warhead; the fuze part is mounted at the rear end of the energy-gathered warhead part; the exploder is mounted at the rear end of the fuse part; a fuze body of the fuze part is provided with a sliding block, a compression spring for pushing the sliding block to displace, a mechanical lock and an electric pull pin for limiting the displacement of the sliding block, and a microswitch which is triggered after the displacement of the sliding block; after the mechanical lock and the electric pull pin are removed, the compression spring pushes the sliding block to move forwards and triggers the microswitch, the exploder conducts timing after the microswitch is triggered, the electric detonator detonates the detonating tube and further detonates the booster explosive after timing is finished, the booster explosive detonates a grain in the energy-gathered warhead, and underwater detonation is achieved. The energy-gathered warhead is directly mounted at the front end of the fuze part, and the detonator controls the fuze part to detonate the energy-gathered warhead, so that safety and convenience are improved; meanwhile, double insurance of the mechanical lock and the electric pull pin is adopted, so that reliability and safety of detonation are improved.

Description

Technical Field

[0001] The present invention relates to an underwater timing detonator, belonging to the technical field of underwater blasting. Background Art

[0002] With the rapid development of fields such as ocean engineering, underwater blasting operations, and military applications, the demand for underwater timing detonators is increasing day by day. These fields require a reliable, accurate, and safe underwater detonating device to ensure precise explosion operations at specific times and locations. Traditional underwater detonation methods often rely on mechanical triggering or electrical signal triggering, but these methods have problems such as low accuracy, poor stability, and susceptibility to environmental interference. For example, the mechanical triggering method may be accidentally activated due to water flow impact or the movement of seabed sediments; while the electrical signal triggering is affected by cable damage, resulting in detonation failure or misfire. In addition, these methods usually require connecting the detonator to the explosive before detonation, increasing the complexity and danger of the operation. Summary of the Invention

[0003] The purpose of the present invention is to provide an underwater timing detonator. By directly installing the shaped charge warhead at the front end of the fuze section and controlling the fuze section to detonate the shaped charge warhead through the detonator, the safety and convenience are improved; at the same time, a mechanical lock and an electric pull pin are used as double insurance to improve the reliability and safety of detonation.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] An underwater timing detonator includes a shaped charge warhead; a fuze section installed at the rear end of the shaped charge warhead for detonating the shaped charge warhead; and a detonator installed at the rear end of the fuze section for timing triggering the fuze section;

[0006] Wherein, the fuze section includes a fuze body, the fuze body includes a receiving portion and a connecting portion formed at the front end of the receiving portion for connecting with the shaped charge warhead; a gland for connecting with the detonator is installed at the rear end of the receiving portion;

[0007] A chute is formed inside the front end of the receiving portion, a slider is slidably arranged in the chute, and an insulating block for closing the chute is embedded in the receiving portion behind the slider;

[0008] A compression spring for pushing the slider to displace in the chute is arranged at one end of the slider, a mechanical lock and an electric pull pin for restricting the displacement of the slider are respectively installed on the receiving portion on both sides of the slider, and a micro switch is installed in the receiving portion on one side of the advancing direction of the slider;

[0009] A detonator tube is also vertically embedded in the slider, an electric detonator for detonating the detonator tube is embedded in the insulating block, and a through hole communicating the connecting portion and the sliding groove is also opened at the front end of the accommodating portion; and after the slider is pushed and stabilized, the electric detonator, the detonator tube, the through hole, and the booster charge in the shaped charge warhead correspond to each other.

[0010] The electric pull pin, the micro switch, and the electric detonator are all electrically connected to the initiator. After the mechanical lock and the electric pull pin are released, the compression spring pushes the slider forward to trigger the micro switch. After the micro switch is triggered, the initiator starts timing. After the timing ends, the electric detonator detonates the detonator tube and further detonates the booster charge. The booster charge detonates the charge column in the shaped charge warhead to achieve underwater detonation.

[0011] Preferably, the mechanical lock includes a locking seat connected to the accommodating portion. A locking rod is arranged in the locking seat and passes through the accommodating portion and is inserted into the upper limit port on the slider. A locking spring is sleeved on the tail of the locking rod, and a limiting plate for restricting the locking spring in the locking seat is arranged at the tail end of the locking rod.

[0012] A locking pin passing through the locking seat and the locking rod is arranged on the locking seat.

[0013] A sliding groove is also opened on the locking rod located in front of the locking pin, and a limiting pin embedded in the sliding groove and used to prevent the locking rod from detaching from the locking seat after the locking pin is unlocked is installed on the locking seat.

[0014] Preferably, a power connection seat extending into the gland and through which the wires connecting the electric pull pin, the micro switch, the electric detonator, and the initiator pass is installed at the rear end of the gland.

[0015] Preferably, the shaped charge warhead includes a shaped charge housing. A shaped charge column is arranged inside the front end of the shaped charge housing. The rear end of the shaped charge housing is connected to the connecting portion, and a booster charge inserted into the shaped charge column is arranged inside the rear end of the shaped charge housing. The booster charge corresponds to the through hole at the front end of the accommodating portion.

[0016] A baffle for preventing the shaped charge column from detaching from the shaped charge housing is arranged at the front end of the shaped charge housing, and a standoff tube for preventing the displacement of the baffle is installed.

[0017] Preferably, the initiator includes a connecting cylinder. The front end of the connecting cylinder is sleeved outside the gland and is hermetically connected to the gland; a controller is installed at the rear end of the connecting cylinder. The electric pull pin, the micro switch, and the electric detonator are all electrically connected to the controller.

[0018] Preferably, a bracket for fixing the timing detonation device underwater is also installed at the bottom of the connecting cylinder.

[0019] Preferably, a protective cover for covering the controller is also screwed at the rear end of the connecting cylinder.

[0020] The beneficial effects of the present invention are as follows:

[0021] By integrating the shaped charge warhead, the fuze unit, and the detonator into one, the operational complexity and danger caused by connecting the detonator to the explosive are avoided. It only requires the mechanical safety and electronic safety of the fuze unit to be in contact to trigger the microswitch and further feedback to the controller, and the controller is used to control the detonation of the shaped charge warhead. At the same time, the fuze unit adopts a dual insurance of mechanical lock and electric pin pull-out, and detonation cannot be achieved unless either insurance is released, which improves the safety performance and operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an underwater timed detonation device;

[0023] Figure 2 It is a cross-sectional view at the fuze unit;

[0024] Figure 3 It is Figure 2 The cross-sectional view taken along the A-A direction in

[0025] Figure 4 It is a cross-sectional view at the shaped charge warhead;

[0026] Figure 5 It is a cross-sectional view at the detonator;

[0027] Figure 6 It is a schematic structural diagram of the detonator with a protective cover.

[0028] The meanings of the main reference numerals in the drawings are as follows:

[0029] 1, shaped charge warhead; 2, fuze unit; 3, detonator; 4, fuze body; 5, accommodating part; 6, connecting part; 7, gland; 8, electrical connection base; 9, chute; 10, slider; 11, insulating block; 12, compression spring; 13, mechanical lock; 14, electric pin pull-out; 15, microswitch; 16, detonating fuse; 17, electric detonator; 18, locking seat; 19, locking rod; 20, locking spring; 21, limiting plate; 22, locking pin; 23, sliding groove; 24, limiting pin; 25, shaped charge housing; 26, shaped charge column; 27, booster charge; 28, baffle plate; 29, standoff tube; 30, connecting tube; 31, controller; 32, protective cover; 33, bracket. SPECIFIC EMBODIMENTS

[0030] This embodiment provides an underwater timed detonation device. Referring to Figures 1-6 as shown, it includes a shaped charge warhead 1; a fuze unit 2 installed at the rear end of the shaped charge warhead 1 for detonating the shaped charge warhead 1; and a detonator 3 installed at the rear end of the fuze unit 2 for triggering the fuze unit 2 at a fixed time.

[0031] Among them, the fuse unit 2 includes a fuse body 4. The fuse body 4 includes a receiving portion 5 and a connecting portion 6 formed at the front end of the receiving portion 5 for connecting with the shaped charge warhead 1. At the rear end of the receiving portion 5, a gland 7 for connecting with the detonator 3 is installed, and at the rear end of the gland 7, a power connection socket 8 extending into the gland 7 for the wire to pass through is installed.

[0032] A chute 9 is formed inside the front end of the receiving portion 5. A slider 10 is slidably arranged in the chute 9. An insulating block 11 for closing the chute 9 is embedded in the receiving portion 5 behind the slider 10. This structure restricts the slider 10 within the chute 9 and enables it to displace only along the length direction of the chute 9. At the same time, a compression spring 12 for pushing the slider 10 to displace in the chute 9 is arranged at one end of the slider 10. Mechanical locks 13 and electric pull pins 14 for restricting the displacement of the slider 10 are respectively installed on the receiving portion 5 on both sides of the slider 10 (the electric pull pin 14 is similar to a small electric control telescopic device; a limiting port corresponding to the execution end of the mechanical lock 13 and a limiting groove corresponding to the execution end of the electric pull pin 14 are provided on the slider 10. The execution end of the mechanical lock 13 is inserted into the corresponding limiting port, and the execution end of the electric pull pin 14 abuts against the end wall of the limiting groove. Due to the restrictive effects of the mechanical lock 13 and the electric pull pin 14, the compression spring 12 is in a compressed state), and a micro switch 15 is installed inside the receiving portion 5 on one side of the advancing direction of the slider 10. The triggering portion of the micro switch 15 extends into the chute 9.

[0033] A detonator tube 16 is vertically embedded in the slider 10. An electric detonator 17 for detonating the detonator tube 16 is embedded in the insulating block 11. A through hole communicating the connecting portion 6 and the chute 9 is also opened at the front end of the receiving portion 5. And after the mechanical lock 13 and the electric pull pin 14 release the restriction on the slider 10, under the action of the compression spring 12, the slider 10 will be pushed along the chute 9 and finally maintain a stable state. At this time, the electric detonator 17, the detonator tube 16, the through hole, and the booster charge 27 in the shaped charge warhead 1 correspond to each other.

[0034] Specifically, the mechanical lock 13 includes a locking seat 18 connected to the receiving portion 5. A locking rod 19 is arranged inside the locking seat 18, passing through the receiving portion 5 and inserted into the limiting port on the slider 10. A locking spring 20 is sleeved on the tail of the locking rod 19, and a limiting plate 21 for restricting the locking spring 20 within the locking seat 18 is arranged at the tail end of the locking rod 19 (the locking spring 20 is compressed within the locking seat 18). At the same time, a locking pin 22 passing through the locking seat 18 and the locking rod 19 is arranged on the locking seat 18. A sliding groove 23 is also opened on the locking rod 19 in front of the locking pin 22, and a limiting pin 24 embedded in the sliding groove 23 and used to prevent the locking rod 19 from detaching from the locking seat 18 after the locking pin 22 is released is installed on the locking seat 18.

[0035] That is, in the initial state, the front end of the locking lever 19 is inserted into the limiting port of the slider 10, and the locking pin 22 penetrates through the locking seat 18 and the locking lever 19 to fix the position of the locking lever 19 to restrict the slider 10. The limiting pin 24 abuts against the rear end wall of the sliding groove 23. In this way, after the locking pin 22 is pulled out, under the action of the locking spring 20, the locking lever 19 withdraws from the limiting port. However, due to the existence of the limiting pin 24, the locking lever 19 will not completely disengage from the locking seat 18.

[0036] The shaped charge warhead 1 includes a shaped charge housing 25. A shaped charge column 26 is arranged inside the front end of the shaped charge housing 25. The rear end of the shaped charge housing 25 is connected to the connecting part 6, and a booster charge 27 inserted into the shaped charge column 26 is arranged inside the rear end of the shaped charge housing 25. The booster charge 27 corresponds to the front end through hole of the accommodating part 5. A baffle plate 28 for preventing the shaped charge column 26 from detaching from the shaped charge housing 25 is arranged at the front end of the shaped charge housing 25, and a standoff tube 29 for preventing the displacement of the baffle plate 28 is installed.

[0037] The detonator 3 includes a connecting cylinder 30. The front end of the connecting cylinder 30 is sleeved outside the gland 7 and is hermetically connected to the gland 7. A controller 31 (with its own panel and power supply) is installed at the rear end of the connecting cylinder 30. The electric extraction pin 14, the microswitch 15, and the electric detonator 17 are all electrically connected to the controller 31. The wires connecting the electric extraction pin 14, the microswitch 15, the electric detonator 17, and the controller 31 pass through the through holes on the insulating block 11 and / or the gland 7 and / or the power connection base 8 and are then connected to the controller 31. At the same time, in order to prevent personnel from accidentally touching the operation panel of the controller 31, a protective cover 32 for covering the controller 31 is also screwed at the rear end of the connecting cylinder 30. Before the operation panel is needed, the protective cover 32 can be unscrewed.

[0038] To facilitate the fixation of the detonating device, a bracket 33 for fixing the timed detonating device underwater is also installed at the bottom of the connecting cylinder 30. The bracket 33 can be a folding type or a telescopic type, and the end of the support rod of the frame body can be designed to be pointed to facilitate inserting the bracket 33 into the mud layer.

[0039] During use, the operator first fixes the detonating device with the bracket 33 as a whole to the underwater mud surface, then unscrews the protective cover 32, and then pulls out the locking pin 22. Under the action of the locking spring 20, the locking lever 19 will withdraw from the limiting port to release the first mechanical insurance; then through the operation panel of the controller 31, press the release key to release the electric extraction pin 14, and the execution end of the electric extraction pin 14 retracts to release the second electronic insurance.

[0040] After the mechanical lock 13 and the electric pin puller 14 release the restriction on the slider 10, after the position of the slider 10 finally stabilizes, the electric detonator 17, the detonating fuse 16, the through hole, and the booster charge 27 in the shaped charge warhead 1 will correspond to each other. And when the slider 10 moves forward, it will trigger the micro switch 15. After the micro switch 15 is triggered, it will give a feedback signal to the controller 31. The controller 31 starts a countdown (which can be set in advance according to the water depth, for example, 30 minutes, to leave sufficient time for the operator to return to the surface). After the timing ends, the controller 31 detonates the electric detonator 17. After the electric detonator 17 is detonated, it detonates the detonating fuse 16 and further detonates the booster charge 27. The booster charge 27 then detonates the shaped charge column 26 in the shaped charge warhead 1 to achieve underwater detonation.

[0041] The above is only the preferred embodiment of the present invention patent. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention patent, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention patent.

Claims

1. An underwater timed detonator, characterized in that, It includes a shaped charge warhead; a fuze unit installed at the rear end of the shaped charge warhead for detonating the shaped charge warhead; and a detonator installed at the rear end of the fuze unit for triggering the fuze unit at a set time. Among them, the fuze unit includes a fuze body, and the fuze body includes a receiving portion and a connecting portion formed at the front end of the receiving portion for connecting with the shaped charge warhead; a gland for connecting with the detonator is installed at the rear end of the receiving portion. A sliding groove is formed inside the front end of the receiving portion, a slider is slidably arranged in the sliding groove, and an insulating block for closing the sliding groove is embedded in the receiving portion behind the slider. A compression spring for pushing the slider to displace in the sliding groove is arranged at one end of the slider, a mechanical lock and an electric pull pin for restricting the displacement of the slider are respectively installed on the receiving portion on both sides of the slider, and a microswitch is installed inside the receiving portion on the side of the advancing direction of the slider. A detonator tube is vertically embedded in the slider, an electric detonator for detonating the detonator tube is embedded in the insulating block, and a through hole communicating the connecting portion and the sliding groove is also opened at the front end of the receiving portion; and after the slider is pushed and stabilized, the electric detonator, the detonator tube, the through hole and the booster charge in the shaped charge warhead are corresponding. The electric pull pin, the microswitch and the electric detonator are all electrically connected to the detonator. After the mechanical lock and the electric pull pin are released, the compression spring pushes the slider forward to trigger the microswitch. After the microswitch is triggered, the detonator starts timing. After the timing ends, the electric detonator detonates the detonator tube and further detonates the booster charge. The booster charge detonates the charge column in the shaped charge warhead to achieve underwater detonation.

2. The underwater timing detonator according to claim 1, characterized in that, The mechanical lock includes a locking seat connected to the receiving portion. A locking rod is arranged inside the locking seat, which penetrates through the receiving portion and inserts into the upper limit port on the slider. A locking spring is sleeved on the tail of the locking rod, and a limiting plate for restricting the locking spring inside the locking seat is arranged at the tail end of the locking rod. A locking pin penetrating through the locking seat and the locking rod is arranged on the locking seat. A sliding groove is also opened on the locking rod in front of the locking pin, and a limiting pin embedded in the sliding groove and used to prevent the locking rod from detaching from the locking seat after the locking pin is unlocked is installed on the locking seat.

3. The underwater timed detonation device according to claim 1, wherein A power connection seat extending into the gland and through which the wires connecting the electric pull pin, the microswitch, the electric detonator and the detonator pass is installed at the rear end of the gland.

4. The underwater timing detonation device according to claim 1, wherein The shaped charge warhead includes a shaped charge housing. A shaped charge column is arranged inside the front end of the shaped charge housing. The rear end of the shaped charge housing is connected to the connecting portion, and a booster charge inserted into the shaped charge column is arranged inside the rear end of the shaped charge housing. The booster charge corresponds to the through hole at the front end of the receiving portion. A baffle for preventing the shaped charge column from detaching from the shaped charge housing is arranged at the front end of the shaped charge housing, and a standoff tube for preventing the displacement of the baffle is installed.

5. The underwater timed detonating device according to claim 1, wherein, The detonator includes a connecting cylinder. The front end of the connecting cylinder is sleeved outside the gland and is hermetically connected to the gland; a controller is installed at the rear end of the connecting cylinder. The electric pull pin, the microswitch and the electric detonator are all electrically connected to the controller.

6. The underwater timed detonating device according to claim 5, characterized in that, A bracket for fixing the timing detonation device underwater is also installed at the bottom of the connecting cylinder.

7. The underwater timing detonator according to claim 5, characterized in that, A protective cover for covering the controller is also screwed at the rear end of the connecting cylinder.

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