CN102358396A - Device for eliminating influences of bubble jet flow in cabin-section underwater explosion experiment - Google Patents
Device for eliminating influences of bubble jet flow in cabin-section underwater explosion experiment Download PDFInfo
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- CN102358396A CN102358396A CN2011101619157A CN201110161915A CN102358396A CN 102358396 A CN102358396 A CN 102358396A CN 2011101619157 A CN2011101619157 A CN 2011101619157A CN 201110161915 A CN201110161915 A CN 201110161915A CN 102358396 A CN102358396 A CN 102358396A
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- turbogrid
- turbogrid plates
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Abstract
The invention provides a device for eliminating influences of a bubble jet flow in a cabin-section underwater explosion experiment. The device comprises a turbogrid plate, ropes and euphroes; the turbogrid plate is a quadrate composite plate with each side length of 2Rm, Rm is a maximal radius of each bubble, the first layer of the turbogrid plate is a rubber layer, a second layer of the turbogrid plate is a steel plate layer, the rubber layer and the steel plate layer are same in thickness, grids are uniform in size, and the area of the grids accounts for 1/2 of the total area; four corners of the turbogrid plate are respectively provided with a rope, and each rope is provided with one euphroe; and the turbogrid plate is fixed at a position D(D=0.4Rm) away from an explosion center below the explosion center by using the ropes. The device provided by the invention has the characteristics that: firstly the turbogrid plate can be used for attracting the bubbles so as to reduce the influences of the jet flow; secondly, by means of the transmission effect of the grids to a shock wave, the turbogrid plate can be used for greatly reducing the reflected shock wave so as to maximally lower the interferences of the reflected shock wave to a normal incident shock wave; and finally, the advantages of lower method cost, simplicity for workpiece processing, convenience for operation and better effect are achieved.
Description
Technical field
What the present invention relates to is a kind of underwater blast experimental installation, specifically a kind of cabin section underwater blast experimental installation of eliminating the bubble jet to the works influence.
Background technology
Carrying out mock-up cabin section when experiment, consider cartridge bag quality and the restriction of experiment place, want to reach the close effect of injuring in the real ship blast, the distance of cartridge bag and model is very little, and quick-fried distance maybe be less than the maximum radius of bubble.The bubble that this moment, blast produced will be attracted by body structure surface in the stage of caving in consumingly, will form one jet in bubble inside, and this strand jet results from the one side away from body structure surface, and pass bubble at a high speed, strike the another side of walls up to it.Thereby the bubble jet will influence the effect of testing to the effect of structure, be unfavorable for observing separately the influence of shock wave to the cabin segment model.Therefore need a kind of device of eliminating the bubble jet to the works influence, on the basis of this device, carry out cabin section underwater blast experiment.
Summary of the invention
The object of the present invention is to provide the device that a kind of equipment investment is few, simple to operate, outstanding effect is eliminated bubble jet influence in the section underwater blast experiment of cabin.
The objective of the invention is to realize like this:
Comprise Turbogrid plates, rope and boomer; Said Turbogrid plates are that the length of side is 2R
mSquare composite board, R wherein
mBe the maximum radius of bubble, the ground floor of Turbogrid plates is that rubber layer, the second layer are the steel plate layer, and double-ply thickness equates that grid size is even, and the area of grid accounts for 1/2 of the gross area; On four angles of Turbogrid plates a rope is installed respectively, a boomer is set on the every rope; Turbogrid plates are the position of D through lanyard quick-fried heart of distance below the quick-fried heart, D=0.4R
m
The present invention can also comprise:
1, there is cavity structure said rubber layer inside.
2, said cavity structure is staggered truncated cone-shaped chamber of arranging.
3, on four of Turbogrid plates angles an iron hoop is arranged respectively, there is hook at the two ends of rope.
4, said bubble maximum radius
wherein W be that dose, H are the ID of the quick-fried heart.
The present invention is a kind of device that utilizes Turbogrid plates to eliminate bubble jet influence in the section underwater blast experiment of cabin.In the model underwater blast experiment, mainly examine the effect of shock wave, but consider cartridge bag quality and the restriction of experiment place, the quick-fried distance of cartridge bag maybe be less than the bubble maximum radius, so the existence of jet causes the result inaccurate interference experiment.The present invention is the basis with the Bjerknes effect; Be employed in the method that quick-fried some below, position (with the buoyancy opposite sense) is provided with Turbogrid plates; In the hope of reducing the Bjerknes power of works, make that change has taken place the jet direction of bubble, to eliminate of the influence of bubble jet to experiment effect to bubble.This device has following advantage: at first Turbogrid plates can attract bubble, reduce the influence of jet; Secondly Turbogrid plates greatly reduce the shock wave of reflection through the transmission effect of grid shock wave, reduce the interference that return shock aligns incident blast wave to greatest extent; This method expense is low at last, workpiece processing is simple, easy to operate, effect is better.Solved when the investigation shock wave destroys works in the section underwater blast experiment of cabin the problem that the bubble jet disturbance is big.
Description of drawings
Fig. 1 is a Turbogrid plates shape scheme drawing;
Fig. 2 is the A-A section-drawing of Fig. 1, reflection be the Turbogrid plates lamination layer structures;
Fig. 3 is the B-B section-drawing of Fig. 2;
Fig. 4 is rope, boomer and hook order of connection scheme drawing;
Fig. 5 is a running condition scheme drawing of the present invention.
The specific embodiment
For example the present invention is done more detailed description below in conjunction with accompanying drawing:
In conjunction with Fig. 1-Fig. 4.The device of bubble jet influence mainly comprises Turbogrid plates, rope 7 and boomer 6 in the section underwater blast experiment of elimination of the present invention cabin; Said Turbogrid plates are that the length of side is 2R
mSquare composite board, R wherein
mBe the maximum radius of bubble, the ground floor of Turbogrid plates is that rubber layer 4, the second layer are steel plate layer 3, and double-ply thickness equates, is 2cm respectively, and grid size is even, and the area of grid accounts for 1/2 of the gross area; On four angles of Turbogrid plates a rope is installed respectively, a boomer is set on the every rope; In conjunction with Fig. 5, Turbogrid plates are the position of D through lanyard quick-fried heart of distance below the quick-fried heart, D=0.4R
mThere is cavity structure 1 rubber layer inside.Cavity structure is staggered truncated cone-shaped chamber of arranging.On four angles of Turbogrid plates an iron hoop is arranged respectively, there is hook 5 at the two ends of rope.Said bubble maximum radius
wherein W is that dose, H are the ID of the quick-fried heart.
Rubber layer is composited by elastomeric material, will produce distortion when internal cavities receives explosion wave and absorb energy, reduces and impacts reflection of wave.
The length of 4 nylon ropes is decided according to experiment condition, and nylon rope can cushion the impact effect of blast load to Turbogrid plates.
Confirm the distance B=0.4R between the Turbogrid plates and the quick-fried heart through numerical modelling
mThe time, Turbogrid plates will alleviate the destruction of bubble jet to works to greatest extent.In test, with four angles of nylon rope connection Turbogrid plates, it is the position of D that Turbogrid plates are lifted and be fixed on the quick-fried heart of distance below the quick-fried heart.
Claims (6)
1. a device of eliminating bubble jet influence in the section underwater blast experiment of cabin is characterized in that: comprise Turbogrid plates, rope and boomer; Said Turbogrid plates are that the length of side is 2R
mSquare composite board, R wherein
mBe the maximum radius of bubble, the ground floor of Turbogrid plates is that rubber layer, the second layer are the steel plate layer, and double-ply thickness equates that grid size is even, and the area of grid accounts for 1/2 of the gross area; On four angles of Turbogrid plates a rope is installed respectively, a boomer is set on the every rope; Turbogrid plates are the position of D through lanyard quick-fried heart of distance below the quick-fried heart, D=0.4R
m
2. the device of bubble jet influence in the section underwater blast experiment of elimination according to claim 1 cabin, it is characterized in that: there is cavity structure said rubber layer inside.
3. the device of bubble jet influence in the section underwater blast experiment of elimination according to claim 2 cabin is characterized in that: said cavity structure is staggered truncated cone-shaped chamber of arranging.
4. according to the device of bubble jet influence in claim 1, the 2 or 3 described elimination cabin section underwater blast experiments, it is characterized in that: on four angles of Turbogrid plates an iron hoop is arranged respectively, there is hook at the two ends of rope.
5. according to the device of bubble jet influence in claim 1, the 2 or 3 described elimination cabin section underwater blast experiments, it is characterized in that: said bubble maximum radius
wherein W is that dose, H are the ID of the quick-fried heart.
6. the device of bubble jet influence in the section underwater blast experiment of elimination according to claim 4 cabin, it is characterized in that: said bubble maximum radius
wherein W is that dose, H are the ID of the quick-fried heart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161915 CN102358396B (en) | 2011-06-16 | 2011-06-16 | Device for eliminating influences of bubble jet flow in cabin-section underwater explosion experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161915 CN102358396B (en) | 2011-06-16 | 2011-06-16 | Device for eliminating influences of bubble jet flow in cabin-section underwater explosion experiment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102358396A true CN102358396A (en) | 2012-02-22 |
| CN102358396B CN102358396B (en) | 2013-10-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110161915 Expired - Fee Related CN102358396B (en) | 2011-06-16 | 2011-06-16 | Device for eliminating influences of bubble jet flow in cabin-section underwater explosion experiment |
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| CN (1) | CN102358396B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679523A (en) * | 2016-12-29 | 2017-05-17 | 武汉大学 | Air buffer device used for eliminating underwater near-distance explosion shock waves |
| CN106759157A (en) * | 2016-12-12 | 2017-05-31 | 武汉大学 | A kind of protector of anti-underwater contact explosion of being called in person for concrete gravity dam dam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5114140A (en) * | 1991-02-20 | 1992-05-19 | Universal City Studios, Inc. | Explosion simulator |
| CN1665715A (en) * | 2002-05-28 | 2005-09-07 | 荷兰应用科学研究会(Tno) | Underwater shock protection device |
| CN201429624Y (en) * | 2009-04-20 | 2010-03-24 | 昆明理工大学 | Device for testing underwater explosion velocity of explosive |
| CN102042787A (en) * | 2010-12-27 | 2011-05-04 | 浙江大学 | Flexible composite air-curtain shock absorption protective device for underwater explosion |
-
2011
- 2011-06-16 CN CN 201110161915 patent/CN102358396B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5114140A (en) * | 1991-02-20 | 1992-05-19 | Universal City Studios, Inc. | Explosion simulator |
| CN1665715A (en) * | 2002-05-28 | 2005-09-07 | 荷兰应用科学研究会(Tno) | Underwater shock protection device |
| CN201429624Y (en) * | 2009-04-20 | 2010-03-24 | 昆明理工大学 | Device for testing underwater explosion velocity of explosive |
| CN102042787A (en) * | 2010-12-27 | 2011-05-04 | 浙江大学 | Flexible composite air-curtain shock absorption protective device for underwater explosion |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759157A (en) * | 2016-12-12 | 2017-05-31 | 武汉大学 | A kind of protector of anti-underwater contact explosion of being called in person for concrete gravity dam dam |
| CN106759157B (en) * | 2016-12-12 | 2018-12-14 | 武汉大学 | It is a kind of to call in person the protective device of anti-underwater contact explosion for concrete gravity dam dam |
| CN106679523A (en) * | 2016-12-29 | 2017-05-17 | 武汉大学 | Air buffer device used for eliminating underwater near-distance explosion shock waves |
| CN106679523B (en) * | 2016-12-29 | 2017-12-26 | 武汉大学 | A kind of air buffer device for being used to eliminate underwater close-in blasting shock wave |
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| Publication number | Publication date |
|---|---|
| CN102358396B (en) | 2013-10-30 |
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Granted publication date: 20131030 Termination date: 20200616 |
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| CF01 | Termination of patent right due to non-payment of annual fee |