CN109459797B - Water inlet self-destruction mechanism and water inlet self-destruction method of underwater closed detector - Google Patents
Water inlet self-destruction mechanism and water inlet self-destruction method of underwater closed detector Download PDFInfo
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- CN109459797B CN109459797B CN201811538013.9A CN201811538013A CN109459797B CN 109459797 B CN109459797 B CN 109459797B CN 201811538013 A CN201811538013 A CN 201811538013A CN 109459797 B CN109459797 B CN 109459797B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims description 18
- 239000002360 explosive Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 6
- 239000013535 sea water Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measuring Fluid Pressure (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a water inlet self-destruction mechanism and a water inlet self-destruction method of a water-in-water closed detector, which solve the problems of complex structure and poor reliability of the water inlet mechanism of the existing closed detector. An inner cavity annular step (16) is arranged on the inner side wall of the piston cylinder (5), an annular cavity (7) is arranged between the inner cavity side wall of the piston cylinder (5) below the inner cavity annular step (16) and the piston (3), a grain groove (17) is arranged on the lower bottom surface of the piston (3), a grain (9) is filled in the grain groove (17), a medicine blocking plate (12) is arranged on a notch of the grain groove (17), an igniter (13) is connected with the grain (9) through the medicine blocking plate (12), an air passage (8) is communicated between the grain groove (17) and the annular cavity (7), a shear pin insertion annular groove (18) is arranged on the side wall of the piston (3), and the end head of the shear pin (4) is inserted in the shear pin insertion annular groove (18); and the manufacturing and maintenance are simple.
Description
Technical Field
The invention relates to a water inlet self-destruction mechanism of a closed detector in water, in particular to a self-destruction mechanism for realizing water inlet through micro blasting in the detector and a water inlet self-destruction method.
Background
In research and investigation of confidential sea or military training, a closed detector in water is often used, after the task of the detector is completed, the detector is sometimes not required to be recovered, but is required to be self-destructed, and then the detector is immersed into the sea, and the self-destruct is generally realized by enabling the closed detector to enter sea water, so that equipment and data in the detector are scrapped; the water inlet mechanism on the existing detector is characterized in that a limit steel ball is arranged on a water inlet channel and is matched with the limit mechanism, an explosion bolt is arranged on the limit mechanism, and the limit mechanism releases the limit of the limit steel ball by detonating the explosion bolt, so that the water inlet channel on the closed detector is opened, and the aim of self-destruction after water is fed into the detector is achieved; the mechanism has the defects of complex structure and poor reliability, and the water inlet self-destruction mechanism of the closed detector in water with low cost, simple structure and high operation reliability is urgently needed to be developed on site.
Disclosure of Invention
The invention provides a water inlet self-destruction mechanism and a water inlet self-destruction method of a water-in-water closed detector, which solve the technical problems of complex structure and poor reliability of the water inlet mechanism of the existing closed detector.
The invention solves the technical problems by the following technical proposal:
The water inlet self-destruction mechanism of the underwater airtight detector comprises a detector airtight shell, wherein a water inlet mechanism mounting hole is formed in the detector airtight shell, a piston cylinder is fixedly connected to the water inlet mechanism mounting hole, the piston cylinder is arranged in the detector airtight shell, a piston is arranged at the upper end of the piston cylinder, an inner cavity annular step is formed in the inner side wall of the piston cylinder, an annular cavity is formed between the inner cavity side wall of the piston cylinder below the inner cavity annular step and the piston, a grain groove is formed in the lower bottom surface of the piston, a grain is filled in the grain groove, a medicine baffle is arranged on a notch of the grain groove, an igniter is connected with the grain through the baffle, an air passage is communicated between the grain groove and the annular cavity, a water inlet channel is formed in the inner cavity side wall of the piston cylinder above the inner cavity annular step, a shear pin is fixedly arranged on the piston cylinder outside the water inlet channel, a shear pin is arranged on the side wall of the piston, and the end of the shear pin is inserted into the annular groove; an upper O-shaped sealing ring is arranged between the side wall of the inner cavity of the piston cylinder above the shear pin and the piston, and a lower O-shaped sealing ring is arranged between the side wall of the inner cavity of the piston cylinder below the shear pin and the piston.
A second annular cavity is arranged between the side wall of the inner cavity of the piston cylinder below the annular cavity and the piston; the bottom surface of the piston cylinder is provided with a buffer cushion, and the lower bottom surface of the piston cylinder is provided with a blanking cover with a central hole.
A water inlet self-destruction method of a closed detector in water comprises the following steps:
the method comprises the steps that firstly, an inner cavity annular step is arranged on the inner side wall of a piston cylinder, an annular cavity is arranged between the inner cavity side wall of the piston cylinder below the inner cavity annular step and a piston, a grain groove is arranged on the lower bottom surface of the piston, grains are filled in the grain groove, an igniter is connected with the grains through a medicine blocking plate, an air passage is communicated between the grain groove and the annular cavity, a water inlet channel is arranged on the inner cavity side wall of the piston cylinder above the inner cavity annular step, a shearing pin is fixedly arranged on the piston cylinder outside the water inlet channel, a shearing pin inserting annular groove is arranged on the side wall of the piston, and the end head of the shearing pin is inserted into the shearing pin inserting annular groove;
and secondly, igniting the explosive column through an igniter, enabling high-pressure gas generated by the explosive column after explosion to enter the annular cavity through the communicating air passage, enabling the high-pressure gas to generate downward pressure on the piston, enabling the shearing pin to be sheared, enabling the piston to fall down and fall on a blanking cover with a central hole, enabling the upper top surface of the piston to fall below the water inlet channel, enabling seawater to enter the detector closed shell through the upper port of the piston cylinder and the water inlet channel, and achieving self-destruction of equipment in the detector closed shell.
The invention uses the initiating explosive device to burst and cut off the shearing pin, so as to cause the piston to fall down, realize the water inlet of the sealing mechanism, and compared with the traditional steel ball water inlet mechanism, the invention has the advantages of more reliable realization, lower cost and simpler manufacture and maintenance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of the structure of the airtight housing of the present invention after water inflow.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
The water inlet self-destruction mechanism of the underwater airtight detector comprises a detector airtight shell 6, wherein a water inlet mechanism mounting hole 15 is formed in the detector airtight shell 6, a piston cylinder 5 is fixedly connected to the water inlet mechanism mounting hole 15, the piston cylinder 5 is arranged in the detector airtight shell 6, a piston 3 is arranged at the upper end of the piston cylinder 5, an inner cavity annular step 16 is formed in the inner side wall of the piston cylinder 5, an annular cavity 7 is formed between the inner cavity side wall of the piston cylinder 5 below the inner cavity annular step 16 and the piston 3, a grain groove 17 is formed in the lower bottom surface of the piston 3, a grain 9 is filled in the grain groove 17, a baffle plate 12 is arranged on a notch of the grain groove 17, an igniter 13 is connected with the grain 9 through the baffle plate 12, an air passage 8 is communicated between the grain groove 17 and the annular cavity 7, a water inlet channel 14 is formed in the inner cavity side wall of the piston cylinder 5 above the inner cavity annular step 16, a shearing pin 4 is fixedly arranged on the piston cylinder 5 at the outer side of the water inlet channel 14, a shearing pin 18 is arranged on the side wall of the piston 3, and the shearing pin 18 is inserted into the annular pin 4; an upper O-shaped sealing ring 1 is arranged between the side wall of the inner cavity of the piston cylinder 5 above the shear pin 4 and the piston 3, and a lower O-shaped sealing ring 2 is arranged between the side wall of the inner cavity of the piston cylinder 5 below the shear pin 4 and the piston 3; because the inner cavity annular step 16 protruding inwards is arranged above the annular cavity 7, the upward acting force of high-pressure gas generated after the explosive column 9 explodes on the piston 3 is balanced by the inner cavity annular step 16, so that the piston 3 cannot move upwards, but the downward acting force of the high-pressure gas on the piston 3 is not blocked, and when the force is larger than the shearing force born by the shearing pin 4, the shearing pin 4 is sheared, and the piston 3 falls downwards.
A second annular cavity 19 is arranged between the side wall of the inner cavity of the piston cylinder 5 below the annular cavity 7 and the piston 3, and the second annular cavity 19 has two functions, namely, the impact of high-pressure gas generated after the explosive column 9 explodes is absorbed to avoid the explosion of the piston cylinder 5, and the downward pressure on the piston 3 can be increased to ensure that the shearing pin 4 is sheared; the bottom surface of the piston cylinder 5 is provided with a cushion pad 10, the lower bottom surface of the piston cylinder 5 is provided with a blanking cover 11 with a central hole, and the cushion pad 10 is in interference fit with the central hole of the blanking cover 11 so as to ensure that the piston 3 is combined with the blanking cover 11 after falling down without rebound and ensure that the water inlet channel is not blocked again.
A water inlet self-destruction method of a closed detector in water comprises the following steps:
The method comprises the steps that firstly, an inner cavity annular step 16 is arranged on the inner side wall of a piston cylinder 5, an annular cavity 7 is arranged between the inner cavity side wall of the piston cylinder 5 below the inner cavity annular step 16 and a piston 3, a grain groove 17 is arranged on the lower bottom surface of the piston 3, grains 9 are filled in the grain groove 17, an igniter 13 is connected with the grains 9 through a medicine blocking plate 12, an air passage 8 is communicated between the grain groove 17 and the annular cavity 7, a water inlet channel 14 is arranged on the inner cavity side wall of the piston cylinder 5 above the inner cavity annular step 16, a shear pin 4 is fixedly arranged on the piston cylinder 5 outside the water inlet channel 14, a shear pin insertion annular groove 18 is arranged on the side wall of the piston 3, and the end head of the shear pin 4 is inserted into the shear pin insertion annular groove 18;
In the second step, explosive column 9 is ignited through igniter 13, high-pressure gas generated by explosive column 9 after explosion enters annular cavity 7 through communicating air passage 8, the high-pressure gas generates downward pressure on piston 3, shear pin 4 is sheared off, piston 3 falls down and falls onto blanking cover 11 with a central hole, the upper top surface of piston 3 falls below water inlet channel 14, and seawater enters detector closed shell 6 through upper port of piston cylinder 5 and water inlet channel 14, so that self-destruction of equipment in detector closed shell 6 is realized.
Claims (1)
1. The water inlet self-destruction method of the water-in-water airtight detector is carried out by a water inlet self-destruction mechanism of the water-in-water airtight detector, and comprises a detector airtight shell (6), a water inlet mechanism mounting hole (15) is arranged on the detector airtight shell (6), a piston cylinder (5) is fixedly connected to the water inlet mechanism mounting hole (15), the piston cylinder (5) is arranged in the detector airtight shell (6), a piston (3) is arranged at the upper end of the piston cylinder (5), an inner cavity annular step (16) is arranged on the inner side wall of the piston cylinder (5), an annular cavity (7) is arranged between the inner cavity side wall of the piston cylinder (5) below the inner cavity annular step (16) and the piston (3), a grain groove (17) is arranged on the lower bottom surface of the piston (3), a grain (9) is filled in the grain groove (17), a baffle plate (12) is arranged on a notch of the grain groove (17), an igniter (13) is connected with the grain (9) through the baffle plate (12), the inner cavity side wall of the piston cylinder (5) and the annular step (16) is communicated with the inner cavity (8) on the inner cavity (16), a shearing pin (4) is fixedly arranged on the piston cylinder (5) at the outer side of the water inlet channel (14), a shearing pin insertion annular groove (18) is arranged on the side wall of the piston (3), and the end head of the shearing pin (4) is inserted into the shearing pin insertion annular groove (18); an upper O-shaped sealing ring (1) is arranged between the inner cavity side wall of the piston cylinder (5) above the shear pin (4) and the piston (3), and a lower O-shaped sealing ring (2) is arranged between the inner cavity side wall of the piston cylinder (5) below the shear pin (4) and the piston (3); a second annular cavity (19) is arranged between the side wall of the inner cavity of the piston cylinder (5) below the annular cavity (7) and the piston (3); a buffer cushion (10) is arranged on the bottom surface of the piston cylinder (5), and a blanking cover (11) with a central hole is arranged on the lower bottom surface of the piston cylinder (5); the method is characterized by comprising the following steps of:
The method comprises the steps that firstly, an inner cavity annular step (16) is arranged on the inner side wall of a piston cylinder (5), an annular cavity (7) is arranged between the inner cavity side wall of the piston cylinder (5) below the inner cavity annular step (16) and a piston (3), a grain groove (17) is formed in the lower bottom surface of the piston (3), grains (9) are filled in the grain groove (17), an igniter (13) is connected with the grains (9) through a medicine blocking plate (12), an air channel (8) is communicated between the grain groove (17) and the annular cavity (7), a water inlet channel (14) is formed in the inner cavity side wall of the piston cylinder (5) above the inner cavity annular step (16), a shear pin (4) is fixedly arranged on the piston cylinder (5) outside the water inlet channel (14), a shear pin inserting annular groove (18) is formed in the side wall of the piston (3), and the end of the shear pin (4) is inserted into the shear pin inserting annular groove (18);
And secondly, igniting the explosive column (9) through an igniter (13), enabling high-pressure gas generated by the explosive column (9) after explosion to enter the annular cavity (7) through the communication air passage (8), enabling the high-pressure gas to generate downward pressure on the piston (3), enabling the shearing pin (4) to be sheared, enabling the piston (3) to fall down and fall onto the blanking cover (11) with the central hole, enabling the upper top surface of the piston (3) to fall below the water inlet channel (14), enabling seawater to enter the detector closed shell (6) through the upper port of the piston cylinder (5) and the water inlet channel (14), and achieving self-destruction of equipment in the detector closed shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538013.9A CN109459797B (en) | 2018-12-16 | 2018-12-16 | Water inlet self-destruction mechanism and water inlet self-destruction method of underwater closed detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538013.9A CN109459797B (en) | 2018-12-16 | 2018-12-16 | Water inlet self-destruction mechanism and water inlet self-destruction method of underwater closed detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109459797A CN109459797A (en) | 2019-03-12 |
| CN109459797B true CN109459797B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811538013.9A Active CN109459797B (en) | 2018-12-16 | 2018-12-16 | Water inlet self-destruction mechanism and water inlet self-destruction method of underwater closed detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660908A (en) * | 2020-11-20 | 2021-04-16 | 南京理工大学 | Space rope releasing mechanism with adjustable damping |
| CN116002019A (en) * | 2022-12-07 | 2023-04-25 | 杭州航海仪器有限公司 | Full-automatic water inlet self-destruction device of underwater docking submerged buoy |
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2018
- 2018-12-16 CN CN201811538013.9A patent/CN109459797B/en active Active
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| FR2691796A1 (en) * | 1992-06-02 | 1993-12-03 | Giat Ind Sa | Self-destruct system for sub-munition, esp. from carrier shell - has secondary percussion pin actuated by gas generator after appropriate delay |
| JP2002012185A (en) * | 2000-04-28 | 2002-01-15 | Toyo Commun Equip Co Ltd | Self-sinking device of buoy |
| CN1666925A (en) * | 2005-01-07 | 2005-09-14 | 天津大学 | Underwater self-navigating platform mechanical system |
| CN201531257U (en) * | 2009-11-24 | 2010-07-21 | 中国航天科技集团公司川南机械厂 | Mechanical tapping explosion initiating device |
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| CN106017232A (en) * | 2016-07-25 | 2016-10-12 | 新疆天河化工有限公司 | Self-destruction seismic explosive column sealed through clamping and sealing method thereof |
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