CN112196999B - Explosion cavity pressure equalizing structure for medium-high pressure explosion load generator - Google Patents
Explosion cavity pressure equalizing structure for medium-high pressure explosion load generator Download PDFInfo
- Publication number
- CN112196999B CN112196999B CN202011155903.9A CN202011155903A CN112196999B CN 112196999 B CN112196999 B CN 112196999B CN 202011155903 A CN202011155903 A CN 202011155903A CN 112196999 B CN112196999 B CN 112196999B
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- explosion
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- equalizing
- shaper
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- 238000004880 explosion Methods 0.000 title claims abstract description 120
- 239000011148 porous material Substances 0.000 claims abstract description 16
- 230000035939 shock Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009958 sewing Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract description 5
- 230000003993 interaction Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J12/00—Pressure vessels in general
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the field of development of explosion load mechanism and load and structure interaction, and relates to an explosion cavity pressure equalizing structure for a medium-high pressure explosion load generator. The related explosion cavity pressure equalizing structure for the medium-high pressure explosion load generator is positioned between the top cover of the medium-high pressure explosion load generator and the test section, and is provided with a high pressure chamber; the high-pressure chamber consists of at least 2 sections of high-pressure cylinders; an explosion cavity is arranged above the high-pressure chamber; a plurality of groups of explosion driving pipes are arranged in the explosion cavity; an electromagnetic pressure relief valve and an inertial pressure relief valve are uniformly arranged on the outer wall surface of the explosion cavity along the tangential direction of the explosion cavity ring; the explosion cavity pressure equalizing structure is provided with at least 1 pressure equalizing grid plate/pore plate shaper; a plurality of groups of explosion driving pipes detonate in the explosion cavity and form spherical shock waves with larger diameters above the high-pressure chamber; the invention can realize wave front shaping of explosion shock wave in a distance smaller than the diameter of the explosion cavity.
Description
Technical Field
The invention relates to the field of development of explosion load mechanism and load and structure interaction, in particular to novel experimental equipment of a medium-high pressure explosion load generator, and especially relates to an explosion cavity pressure equalizing structure for the medium-high pressure explosion load generator.
Technical Field
The medium-high pressure explosion load generator can realize multiple loading modes such as spherical waves, plane waves and the like, on the basis of using a uniformly distributed multi-tube explosion driver to carry out explosion driving, plane wave loading can be realized within a distance smaller than one explosion cavity diameter through explosion cavity pressure equalizing structure shaping, the flatness can reach more than 95%, and the requirements of various experiments on explosion waveform shaping can be met by arranging shapers with different numbers and different opening ratios; the explosion cavity pressure equalizing structure is one of core components of the explosion load generator and has a key effect on the comprehensive performance of the explosion load generator.
Disclosure of Invention
The invention aims to provide an explosion cavity pressure equalizing structure for a medium-high pressure explosion load generator, which can realize wave front shaping of explosion shock waves in a distance smaller than the diameter of an explosion cavity, and finally realize a plane wave loading mode of the explosion shock waves so as to meet the increasing demands of military and civil use on the plane wave loading environment of the explosion shock waves, and simultaneously improve the universality and the multifunctional level of the medium-high pressure explosion load generator.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the explosion cavity pressure equalizing structure is positioned between the top cover of the medium-high pressure explosion load generator and the test section; the explosion cavity pressure equalizing structure is provided with a high pressure chamber; the high-pressure chamber consists of at least 2 sections of high-pressure cylinders; an explosion cavity is arranged above the high-pressure chamber; a plurality of groups of explosion driving pipes are arranged in the explosion cavity; an electromagnetic pressure relief valve and an inertial pressure relief valve are uniformly arranged on the outer wall surface of the explosion cavity along the circumferential direction of the explosion cavity; the explosion cavity pressure equalizing structure is provided with at least 1 pressure equalizing shaper; the pressure equalizing shaper comprises a grid plate shaper and a pore plate shaper; the pressure equalizing grid plate shaper or the pressure equalizing pore plate shaper frame is fixed between the explosion cavity and the high pressure chamber and between the explosion cavity and the high pressure cylinder section; the pressure equalizing shaper and the explosion cavity and the high pressure cylinder are sealed by a high pressure sealing ring. A plurality of groups of explosion driving pipes detonate in the explosion cavity and form spherical shock waves with larger diameters above the high-pressure chamber; the electromagnetic pressure relief valve and the inertia pressure relief valve on the explosion cavity can modulate the explosion impact waveform, and the pressure equalizing shaper and the high pressure cylinder which are positioned below the explosion cavity can realize incidence, diffraction and reflection of the explosion impact wave and catch up and stitch.
The explosion cavity is of a cylindrical structure with two open ends, and the upper port of the explosion cavity is of a tooth-shaped quick-opening structure.
The contact surfaces of the pressure equalizing shaper, the explosion cavity and the high pressure chamber are provided with positioning shoulders for improving the positioning precision among the pressure equalizing shaper, the explosion cavity and the high pressure chamber.
The pressure equalizing shaper is provided with grid holes or round holes which are arranged in specification; the number and the aperture ratio of the pressure equalizing shapers can be matched and designed according to the incidence, reflection and diffraction sewing requirements of the shock waves.
The explosion cavity pressure equalizing structure for the medium-high pressure explosion load generator provided by the invention has the following beneficial effects by adopting the technical scheme:
1. the pressure equalizing shaper with standardized and modularized design is matched with the multi-tube explosion driver, so that the wave front shaping of the explosion shock wave can be realized within the distance smaller than the diameter of the explosion cavity, the plane wave loading mode of the explosion shock wave is finally realized, and the planeness of the plane wave can reach more than 95%;
2. the optimized design of incidence, diffraction, reflection and catch-up stitching of the explosion shock waves in the grid plate/pore plate shaper and the explosion cavity and the high-pressure chamber is realized by detonating a plurality of explosion drivers with different numbers and different positions, simultaneously opening pressure relief valves with different numbers and different positions, quantitatively changing the number and the aperture ratio of the grid plate/pore plate shaper, and quantitatively changing the number and the aperture ratio of the grid plate/pore plate shaper according to the requirements of various experiments on the explosion wave environment on the basis of modulating the explosion loading waveforms by taking the electromagnetic pressure relief valves and the inertia pressure relief valves into account;
3. the invention has the characteristics of clear division of the related components, good matching design, high waveform modulation precision, strong controllability and operability, simple structure, quick disassembly and assembly, convenient use, low cost and the like.
Drawings
Fig. 1 is a schematic view of the location of the explosion chamber equalizing structure of the present invention in an explosion load generator.
FIG. 2 is a schematic cross-sectional view of the explosion chamber equalizing structure of the present invention.
Fig. 3 is an enlarged view of the portion of fig. 2A.
Fig. 4 is a schematic view of the explosion chamber structure of the invention.
Fig. 5 is a schematic view of the structure of the pressure equalizing grid shaper of the present invention.
FIG. 6 is a schematic diagram of the pressure equalizing orifice shaper of the present invention.
In the figure: 1. a pressure equalizing structure of the explosion cavity; 2. a top cover; 3. an experiment section; 4. a blasting cavity; 5. a high pressure chamber; 6. a pressure equalizing grid plate shaper; 7. a pressure equalizing pore plate shaper; 8. a high pressure seal ring; 9. a multi-tube explosion driver; 10. tooth-engaged quick-opening door; 11. an electromagnetic pressure relief valve; 12. an inertial pressure relief valve; 13. positioning shoulders; 14. equalizing grid holes; 15. and a pressure equalizing round hole.
Detailed Description
The invention will now be described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2 and 3, an explosion cavity pressure equalizing structure 1 of the medium-high pressure explosion load generator is positioned between a top cover 2 and a test section 3 of the medium-high pressure explosion load generator and mainly comprises an explosion cavity 4, a high pressure chamber 5, a pressure equalizing grid plate shaper 6, a pressure equalizing pore plate shaper 7 and a high pressure sealing ring 8; the explosion cavity 4 is positioned above the high-pressure chamber 5; the high-pressure chamber is formed by a 2-section high-pressure cylinder; the pressure equalizing grid plate shaper 6 is fixed between the explosion cavity 4 and the high pressure chamber 5, and the pressure equalizing grid plate shaper 7 is fixed between 2 sections of high pressure cylinders; the pressure equalizing grid plate shaper 6, the pressure equalizing pore plate shaper 7, the explosion cavity 4 and the high-pressure cylinder are sealed by a high-pressure sealing ring 8.
As shown in fig. 4, a plurality of groups of explosion driving pipes 9 are arranged inside the explosion chamber 4; the explosion cavity 4 mainly comprises a cylindrical tooth-shaped quick-opening structure 10, an electromagnetic pressure relief valve 11 and an inertial pressure relief valve 12. The electromagnetic pressure relief valve 11 and the inertia pressure relief valve 12 are 24 groups and are respectively and uniformly arranged on the outer wall of the explosion cavity along the outward normal direction of the explosion cavity ring.
As shown in fig. 2 and 3, the contact surfaces of the pressure equalizing grid plate shaper 6 and the pressure equalizing pore plate shaper 7 with the explosion cavity 4 and the high pressure chamber 5 are provided with positioning shoulders 13 for improving the positioning accuracy among the pressure equalizing grid plate shaper 6, the pressure equalizing pore plate shaper 7, the explosion cavity 4 and the high pressure chamber 5.
As shown in fig. 2, the equalizing grid shaper 6 has equalizing grid holes 14 arranged in a specification; the pressure equalizing pore plate shaper 7 has pressure equalizing round holes 15 arranged in a specification.
In this embodiment, the number of the equalizing grid plate shapers 6 and the equalizing pore plate shapers 7 is 1, the aperture ratio of the equalizing grid plate shapers 6 is 51%, and the aperture ratio of the equalizing pore plate shapers 7 is 48%.
Claims (4)
1. A explode chamber voltage-sharing structure for well high pressure explosion load generator, its characterized in that: the explosion cavity pressure equalizing structure is positioned between the top cover of the medium-high pressure explosion load generator and the test section; the explosion cavity pressure equalizing structure is provided with a high pressure chamber; the high-pressure chamber consists of at least 2 sections of high-pressure cylinders; an explosion cavity is arranged above the high-pressure chamber; a plurality of groups of explosion driving pipes are arranged in the explosion cavity; an electromagnetic pressure relief valve and an inertial pressure relief valve are uniformly arranged on the outer wall surface of the explosion cavity along the circumferential direction of the explosion cavity; the explosion cavity pressure equalizing structure is provided with at least 1 pressure equalizing shaper; the pressure equalizing shaper comprises a grid plate shaper and a pore plate shaper; the pressure equalizing grid plate shaper or the pressure equalizing pore plate shaper frame is fixed between the explosion cavity and the high pressure chamber and between the explosion cavity and the high pressure cylinder section; the pressure equalizing shaper and the explosion cavity and the high pressure cylinder are sealed by a high pressure sealing ring; a plurality of groups of explosion driving pipes detonate in the explosion cavity and form spherical shock waves with larger diameters above the high-pressure chamber; the electromagnetic pressure relief valve and the inertial pressure relief valve on the explosion cavity can modulate the explosion impact waveform.
2. The explosion chamber equalizing structure for the medium-high pressure explosion load generator according to claim 1, wherein: the explosion cavity is of a cylindrical structure with two open ends, and the upper port of the explosion cavity is of a tooth-shaped quick-opening structure.
3. The explosion chamber equalizing structure for the medium-high pressure explosion load generator according to claim 1, wherein: and the contact surfaces of the pressure equalizing shaper, the explosion cavity and the high pressure chamber are provided with positioning shoulders for improving the positioning precision among the pressure equalizing shaper, the explosion cavity and the high pressure chamber.
4. The explosion chamber equalizing structure for the medium-high pressure explosion load generator according to claim 1, wherein: the pressure equalizing shaper is provided with pressure equalizing grid holes or pressure equalizing round holes which are arranged in specification; the number and the aperture ratio of the pressure equalizing shapers can be matched and designed according to the incidence, reflection and diffraction sewing requirements of the shock waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155903.9A CN112196999B (en) | 2020-10-26 | 2020-10-26 | Explosion cavity pressure equalizing structure for medium-high pressure explosion load generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155903.9A CN112196999B (en) | 2020-10-26 | 2020-10-26 | Explosion cavity pressure equalizing structure for medium-high pressure explosion load generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112196999A CN112196999A (en) | 2021-01-08 |
| CN112196999B true CN112196999B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011155903.9A Active CN112196999B (en) | 2020-10-26 | 2020-10-26 | Explosion cavity pressure equalizing structure for medium-high pressure explosion load generator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950104Y (en) * | 2006-09-19 | 2007-09-19 | 宝山钢铁股份有限公司 | Tube blanking adapter for oil sleeve explosive experiment |
| CN103868805A (en) * | 2014-03-19 | 2014-06-18 | 中国人民解放军总参谋部工程兵科研三所 | Dual-driver and driving method for large explosion wave simulation device |
| CN213275207U (en) * | 2020-10-26 | 2021-05-25 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Two-stage tooth-engaging type quick door opening structure for medium-high pressure explosive load generator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6877310B2 (en) * | 2002-03-27 | 2005-04-12 | General Electric Company | Shock wave reflector and detonation chamber |
| GB0916508D0 (en) * | 2009-09-21 | 2009-10-28 | Blast Absorption Systems Ltd | Reinforcing system and method |
| US9027383B2 (en) * | 2011-08-15 | 2015-05-12 | Ora, Inc. | Shock tube apparatus for blast wave simulation |
| US9217698B2 (en) * | 2012-01-24 | 2015-12-22 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Device for simulating explosive blast and imaging biological specimen |
-
2020
- 2020-10-26 CN CN202011155903.9A patent/CN112196999B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950104Y (en) * | 2006-09-19 | 2007-09-19 | 宝山钢铁股份有限公司 | Tube blanking adapter for oil sleeve explosive experiment |
| CN103868805A (en) * | 2014-03-19 | 2014-06-18 | 中国人民解放军总参谋部工程兵科研三所 | Dual-driver and driving method for large explosion wave simulation device |
| CN213275207U (en) * | 2020-10-26 | 2021-05-25 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Two-stage tooth-engaging type quick door opening structure for medium-high pressure explosive load generator |
Non-Patent Citations (1)
| Title |
|---|
| 水下爆炸载荷下小型目标变形及冲击损伤试验;李良军等;《上海交通大学学报》;20101028;第44卷(第10期);1450-1454 * |
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| CN112196999A (en) | 2021-01-08 |
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