CN113108661A - Protective device for vacuum tank implosion test - Google Patents
Protective device for vacuum tank implosion test Download PDFInfo
- Publication number
- CN113108661A CN113108661A CN202110325862.1A CN202110325862A CN113108661A CN 113108661 A CN113108661 A CN 113108661A CN 202110325862 A CN202110325862 A CN 202110325862A CN 113108661 A CN113108661 A CN 113108661A
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- protective layer
- vacuum tank
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- protective
- plate body
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- 230000001681 protective effect Effects 0.000 title claims abstract description 64
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 239000011241 protective layer Substances 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 230000001012 protector Effects 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 17
- 239000002023 wood Substances 0.000 claims description 3
- 239000012634 fragment Substances 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 239000002360 explosive Substances 0.000 description 14
- 238000004880 explosion Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 230000004323 axial length Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000015 trinitrotoluene Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses a protective device for vacuum tank implosion test, which is annular as a whole; the protective device comprises at least one group of protective layer units, a clamping piece arranged on the outer ring of each protective layer unit and used for clamping the protective layer units, and a buffer piece connected to the outer ring of the clamping piece; each protective layer unit comprises a first protective layer and a second protective layer which are sequentially arranged from inside to outside along the radial direction, and the material of the second protective layer is softer than that of the protective layer; the clamping piece is integrally annular and is connected to the outer wall of the second protective layer; and a circle of buffer parts are arranged around the circumferential direction of the outer wall of the clamping part. The vacuum tank wall protective device effectively intercepts the fragments moving at high speed through the protective layer and the second protective layer, so that the vacuum tank wall is reliably protected; even this protector disintegrates in the test process, the bolster also can play the buffering effect, avoids channel-section steel circle and vacuum tank's direct contact to guarantee the integrality of jar wall.
Description
Technical Field
The invention belongs to the technical field of explosion tests, relates to a protective device, and particularly relates to a protective device for a vacuum tank implosion test.
Background
With the continuous development of high-efficiency damage technology, the application of explosives or warheads to high-altitude or space environments becomes more and more possible. Because of lack of air medium in the high-altitude environment, the energy release characteristic and the energy transmission mode of the explosive are different from those of explosion in the air, and therefore, a special test device is needed for researching the explosion and damage characteristics of the explosive under the simulated vacuum condition. A vacuum tank is a common testing device for simulating a vacuum environment.
The vacuum tank is a closed explosion tank body with anti-explosion capability, the tank body is in a capsule shape, the main body consists of an anti-explosion pressure-bearing layer, a sound insulation layer and an inner lining armor layer, the sealing performance is good, and flange plates are uniformly distributed on the central wall surface of the tank body and can be used for mounting measuring devices such as sensors. Before the test, a vacuum pump is adopted to vacuumize the gas in the tank, the pressure in the tank is pumped to meet the requirement required by the test, and then the corresponding implosion test is carried out. When the shell is coated outside the explosive for the test, the fragment speed generated after explosion can reach 2000m/s, and the structure of the tank body can be damaged when the tank body is impacted at high speed, so that the sealing effect and the service life of the tank body are influenced. Therefore, considering the requirements of the vacuum tank on the anti-explosion equivalent and the service life, currently, only the bare explosive column implosion test can be generally carried out in the vacuum tank, for example, in the research on the "internal explosion pressure characteristic and power test of the warm-pressure explosive" disclosed by zhangyu Lei et al (war institute of military engineering, vol.39, No. 7, 2018, P1333-P1338), the bare explosive column implosion test research of the warm-pressure explosive and trinitrotoluene (TNT) explosive is carried out by using the vacuum tank, and the shock wave overpressure and the quasi-static pressure during explosive explosion are obtained. However, in consideration of actual requirements, when the explosive explodes in a high-altitude environment, the exterior of the explosive is usually wrapped by a metal shell, such as a warhead, a self-destruction device and the like, and therefore, equivalent test simulation cannot be performed on the explosive by adopting the existing device.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a protective device for vacuum tank implosion test, which solves the problem that the vacuum tank implosion test cannot be carried out on test samples such as metal shells wrapped outside.
In order to solve the technical problems, the invention adopts the following technical scheme:
a protection device for vacuum tank implosion test is characterized in that the whole protection device is annular; the protective device comprises at least one group of protective layer units, a clamping piece arranged on the outer ring of each protective layer unit and used for clamping the protective layer units, and a buffer piece connected to the outer ring of the clamping piece; each protective layer unit comprises a first protective layer and a second protective layer which are sequentially arranged from inside to outside along the radial direction, and the strength and hardness of the second protective layer are lower than those of the first protective layer; the clamping piece is integrally annular and is connected to the outer wall of the second protective layer; and a circle of buffer piece is arranged around the circumferential direction of the outer wall of the clamping piece.
Specifically, the first protection layer is a regular polygon annular body formed by splicing a plurality of first protection plate bodies along the circumference, and the second protection layer is a regular polygon annular body formed by splicing a plurality of second protection plate bodies along the axial direction and matched with the protection layer in shape; the thickness of the second protective plate body in the radial direction is larger than that of the second protective plate body in the radial direction.
Preferably, the number of the first protective plate bodies in the circumferential direction is 6-12, and the number of the second protective plate bodies in the circumferential direction is 6-12.
Preferably, the first protective plate body is 2-10 mm thick along the radial direction, and the second protective plate body is 8-20 mm thick along the radial direction.
Preferably, the second protective plate body is trapezoidal in cross section shape in the direction perpendicular to the axis, and the trapezoidal second protective plate bodies are sequentially spliced along the circumference to form an integrated regular polygon annular body; the length l of two sides of the second protective plate body (21) along the circumferential direction1And l2Is determined by the following formula:
wherein h is the thickness of the second guard plate body (21), n is the number of sides of the regular polygon forming the guard device, and L is the length of the diagonal of the regular polygon formed by the outer wall of the second guard plate body (21).
Preferably, the first protection plate body and the second protection plate body are fixed through bolts.
Specifically, the clamping piece is a polygonal annular groove formed by splicing a plurality of channel steel along the circumference, and two ends of the second protective layer are respectively provided with a circle of clamping pieces; the buffer piece is a long strip plate matched with the notch of the channel steel, the buffer piece is clamped in the annular groove of the clamping piece, and the radial length of the buffer piece along the protection device is larger than the groove depth of the channel steel.
Specifically, two adjacent channel steel are bolted through a fixed plate.
Preferably, the first protective layer is made of steel, and the second protective layer and the buffer piece are made of wood.
Further, the guard also includes a base for supporting the guard.
Compared with the prior art, the invention has the beneficial effects that:
according to the vacuum tank wall protection device, the first protection layer and the second protection layer are used for effectively intercepting the fragments moving at a high speed, so that the vacuum tank wall is reliably protected; even this protector disintegrates in the test process, the bolster also can play the buffering effect, avoids channel-section steel circle and vacuum tank's direct contact to guarantee the integrality of jar wall. The protection device provided by the invention can be used for carrying out a belt fragment type implosion test by arranging the protection device in the vacuum tank, and provides technical support for the research of explosive explosion and damage characteristics in a vacuum environment.
Drawings
Fig. 1 is a front view of a guard according to an embodiment of the present invention.
Fig. 2 is a side view of a shield apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic view of a first protective plate according to an embodiment of the present invention.
Fig. 4 is a schematic view of a channel according to an embodiment of the present invention.
Figure 5 is a diagram of the effectiveness of a guard constructed in accordance with the present application.
Fig. 6 is a field view of the protective device of the present application after a strip break test.
Fig. 7 is a diagram of a can wall after a strip rupture test using the present shield apparatus.
The various reference numbers in the figures illustrate: 1-a first protective layer, 2-a second protective layer, 3-a clamping piece, 4-a buffer piece, 5-a fixing plate, 6-a bolt and 7-a base;
11-a first guard plate body; 21-a second guard plate body, 22-a second through hole; 31-channel steel, 32-third through hole.
Detailed Description
Specific examples of the present invention are given below. It should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present application fall into the protection scope of the present invention.
The specific embodiment of the invention discloses a protective device for a vacuum tank implosion test, and as shown in figure 1, the protective device is annular as a whole. The protection device comprises at least one group of protection layer units, a clamping piece 3 and a buffer piece 4, wherein the clamping piece 3 is arranged on the outer ring of each protection layer unit and used for clamping the protection layer units; the buffer part 4 is arranged on the outer ring of the clamping part 3 and is used for playing a role in buffering and avoiding the direct contact between the channel steel ring and the vacuum tank, so that the integrity of the tank wall is ensured; the protective layer unit of this embodiment is provided with a set ofly, and experiments show that better buffering effect can be reached, and of course also can radially set up multiunit protective layer unit according to actual need to increase cushioning effect.
Each protective layer unit comprises a first protective layer 1 and a second protective layer 2 which are sequentially arranged from inside to outside along the radial direction, the strength and hardness of the second protective layer 2 are lower than those of the first protective layer 1, and in the embodiment, the first protective layer 1 is made of steel, such as Q235 steel; the second protective layer 2 is preferably made of wood, and is convenient to obtain and easy to obtain.
The clamping piece 3 is annular as a whole, and the clamping piece 3 is connected to the outer wall of the second protective layer 2 and used for clamping and fixing the second protective layer 2 on the first protective layer 1; the clamp 3 of this embodiment is also made of steel. Set up round bolster 4 around 3 outer wall circumferencial directions of holder, bolster 4 has certain buffering effect, avoids the direct contact of 3 steel sheets of holder and vacuum tank wall.
The whole protection device can be a circular framework or an annular framework formed by splicing polygons, but the annular framework formed by splicing polygons is preferred in the embodiment from the viewpoint of the convenience of assembly and implementation of the device. Specifically, the first protective layer 1 is a regular polygon ring body formed by splicing a plurality of first protective plate bodies 11 along the circumference, the first protective plate bodies 11 are steel plates, and adjacent steel plates are welded and connected; the thickness of the first protective plate body 11 along the radial direction (i.e. the thickness of the first protective plate body 11) is 2-10 mm, and the thickness of the first protective plate body 11 of this embodiment is 5 mm.
The second protective layer 2 is a regular polygon ring body formed by splicing a plurality of second protective plate bodies 21 along the axial direction, and is matched with the first protective layer 1 in shape. The second protective plate body 21 of the present embodiment has a trapezoidal cross-sectional shape perpendicular to the axial direction, as shown in fig. 1, so that the trapezoidal second protective plate bodies 21 are sequentially spliced along the circumference to form an integrated regular polygonal ring body. The length of the second protective plate 21 on the side contacting the clamping member 3 is set to l1The length l of the other side of the second protective plate 212By a reaction of1And l2Is determined by the following formula:
where h is the thickness of the second protective plate 21, n is the number of sides of the regular polygon constituting the protective device, and L is the diagonal length of the regular polygon formed by the outer wall of the second protective plate 21.
The thickness of the second guard plate 21 in the radial direction (i.e., the thickness of the second guard plate 21) is 8-20 mm, and the thickness of the second guard plate 21 is 10mm in this embodiment. Generally, the thickness of the second protective layer 2 in the radial direction (i.e. the second protective layer thickness) is greater than the thickness of the first protective layer 1 in the radial direction. The first protective plate body 11 and the second protective plate body 21 of this embodiment are the same along axial length, and the length of the first protective plate body 11 along the axial direction is less than the length of the vacuum tank, and is greater than the length of the experimental article along the axial direction.
According to the invention, the number of the first protective plate bodies 11 in the circumferential direction is 6-12, the number of the second protective plate bodies 21 in the circumferential direction is 6-12, in the embodiment, the number of the first protective plate bodies 11 and the number of the second protective plate bodies 21 are 10, that is, the protective device in the embodiment is in a regular decagon shape.
In order to achieve the assembly of the device according to the invention, the first protective plate body 11 and the second protective plate body 21 are fixed by means of bolts 6. Specifically, two ends of each first protective plate body 11 are respectively provided with two first through holes, and two ends of each second protective plate body 21 are respectively provided with a plurality of second through holes 22, as shown in fig. 3, the number of the second through holes 22 is 2-6, and the determination is specifically performed according to actual needs. The diameters and the opening positions of the first through hole and the second through hole 22 are corresponding and same.
The clamping member 3 of the present embodiment is a polygonal ring-shaped groove formed by splicing a plurality of channel steel 31 along the circumference, wherein the length of the channel steel 31 is along the circumferential direction of the ring-shaped protection device. In this embodiment, the adjacent channel steel 31 is welded together through a fixing plate 5, and specifically, the fixing plate 5 is welded on the two side walls of the channel steel 31 respectively, and the fixing plate 5 has a thickness of 2-3 mm, a length of 4-8 cm, and a width of 2-6 cm. The two ends of the second protective layer 2 are respectively provided with a circle of clamping pieces 3, specifically, the bottom of the channel steel 31 is in contact with the outer wall of the second protective plate body 21, and the notch faces outwards, as shown in fig. 2. The channel steel 31 of this embodiment is a standard channel steel, and the length of the single channel steel 31 and the length l of the outer wall of the single second protective plate body 21 in the circumferential direction are equal1Are equal. A plurality of third through holes 32 are formed in the channel steel 31; and the diameter and the trompil position of third through-hole 31 and second through-hole 22 correspond and are the same, link together channel-section steel 31, second protective plate body 21 and first protective plate body 11 through the bolt.
In order to guarantee that the effective clamping between the first protective plate body 11, the second protective plate body 21 and the channel steel 31 is realized, a clamping steel plate is further arranged, the clamping steel plate is located at the inner ring of the first protective plate body 11, bolt holes are formed in the clamping steel plate, and the bolt holes are located and correspond to the first through holes in size.
The bolster 4 of this embodiment is the rectangular board that matches with the notch of channel-section steel 31, and bolster 4 clamps in the ring channel of holder 3, and bolster 4 is greater than channel-section steel 31's groove depth along the radial length of protector (the thickness of bolster promptly) for bolster 4 is installed and is surpassed channel-section steel limit height in the channel-section steel after, and bolster 4 and vacuum tank wall contact after the explosion avoid the direct contact of first protection plate body 21, channel-section steel 31 and vacuum tank wall.
As another alternative example of the present invention, on the basis of the above embodiment, a base 7 is further provided for stably supporting the shielding device in the vacuum tank. The base 7 of this embodiment is two wooden blocks arranged at the two ends of the bottom of the guard as shown in fig. 2. Every billet height is 10-30cm, and the billet is 1.1 ~ 1.3 along the length of channel-section steel 31 length direction's ratio with channel-section steel length, and the billet is 7 ~ 9 along the axial length of protector and the axial length of channel-section steel 31 along the ratio of protector (being the width of channel-section steel), can make the stable support of protector on base 6 like this.
When the protective device is used, a test sample with the shell is placed in the protective device, and the protective device is placed in the vacuum tank, so that related tests can be carried out.
Fig. 5 is a diagram of an actual effect of the protection device according to an embodiment of the present invention, in this embodiment, five first through holes are formed in each first protection plate body 11, an inner ring of the first protection plate body 11 is connected to a clamping steel plate, and the clamping steel plate, the first protection plate body 11, the second protection plate body 21, and the channel steel 31 are fixed together by bolts. FIG. 6 is a field diagram of a belt-fragment implosion test conducted within the shield, this test being conducted on a loading warhead; fig. 7 is a diagram of the vacuum tank wall after the test, and it can be seen that the protective device is disassembled under the action of the fragments and the shock waves after the test, but the tank wall structure is intact, which shows that the protective device of the present invention can effectively protect the vacuum tank wall, and the explosion test with fragments can be performed in the vacuum tank by using the protective device of the present invention.
Claims (10)
1. The protection device for the vacuum tank implosion test is characterized in that the whole protection device is annular;
the protective device comprises at least one group of protective layer units, a clamping piece (3) arranged on the outer ring of each protective layer unit and used for clamping the protective layer units, and a buffer piece (4) connected to the outer ring of the clamping piece (3);
each protective layer unit comprises a first protective layer (1) and a second protective layer (2) which are sequentially arranged from inside to outside along the radial direction, and the strength and the hardness of the second protective layer (2) are lower than those of the first protective layer (1);
the clamping piece (3) is annular as a whole, and the clamping piece (3) is connected to the outer wall of the second protective layer (2); and a circle of buffer parts (4) are arranged around the circumferential direction of the outer wall of the clamping part (3).
2. The vacuum tank implosion test protection device according to claim 1, wherein the first protection layer (1) is a regular polygon ring formed by splicing a plurality of first protection plate bodies (11) along the circumference, and the second protection layer (2) is a regular polygon ring formed by splicing a plurality of second protection plate bodies (21) along the axial direction and matched with the protection layer (1) in shape; the thickness of the second protective plate body (21) in the radial direction is larger than that of the second protective plate body (1) in the radial direction.
3. The vacuum tank implosion test protection device according to claim 2, wherein the number of the first protection plate bodies (11) in the circumferential direction is 6 to 12, and the number of the second protection plate bodies (21) in the circumferential direction is 6 to 12.
4. The vacuum tank implosion test protection device according to claim 2 or 3, wherein the first protection plate body (11) has a thickness of 2 to 10mm in the radial direction, and the second protection plate body (21) has a thickness of 8 to 20mm in the radial direction.
5. The vacuum tank protection device for the implosion test according to any one of claims 2 or 3, wherein the second protection plate body (21) is trapezoidal in cross-sectional shape in a direction perpendicular to the axis, and the trapezoidal second protection plate bodies (21) are sequentially spliced along the circumference to form an integrated regular polygonal ring body;
the length l of two sides of the second protective plate body (21) along the circumferential direction1And l2Is determined by the following formula:
wherein h is the thickness of the second guard plate body (21), n is the number of sides of the regular polygon forming the guard device, and L is the length of the diagonal of the regular polygon formed by the outer wall of the second guard plate body (21).
6. The vacuum tank implosion test protection device according to any one of claim 2, wherein the first protection plate body (11) and the second protection plate body (21) are fixed by bolts.
7. The vacuum tank implosion test protection device according to claim 1, wherein the clamping piece (3) is a polygonal annular groove formed by splicing a plurality of channel steel (31) along the circumference, and a circle of clamping piece (3) is respectively arranged at two ends of the second protection layer (2); the buffer piece (4) is a long strip plate matched with the notch of the channel steel (31), the buffer piece (4) is clamped in the annular groove of the clamping piece (3), and the radial length of the buffer piece (4) along the protection device is larger than the groove depth of the channel steel (31).
8. The vacuum tank implosion test protector according to claim 7, wherein two adjacent channel steel (31) are connected by a fixing plate (5).
9. The vacuum tank implosion test protection device according to any one of claims 1 to 8, wherein the first protection layer (1) is made of steel, and the second protection layer (2) and the buffer member (4) are made of wood.
10. The vacuum tank implosion test protection device of any one of claims 1 to 8, further comprising a base (7) for supporting said protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325862.1A CN113108661A (en) | 2021-03-26 | 2021-03-26 | Protective device for vacuum tank implosion test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325862.1A CN113108661A (en) | 2021-03-26 | 2021-03-26 | Protective device for vacuum tank implosion test |
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| Publication Number | Publication Date |
|---|---|
| CN113108661A true CN113108661A (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110325862.1A Pending CN113108661A (en) | 2021-03-26 | 2021-03-26 | Protective device for vacuum tank implosion test |
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| Country | Link |
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| CN (1) | CN113108661A (en) |
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2021
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Application publication date: 20210713 |