CN102897331A - Blasting device capable of changing pressure reduction rate - Google Patents
Blasting device capable of changing pressure reduction rate Download PDFInfo
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- CN102897331A CN102897331A CN2012103697032A CN201210369703A CN102897331A CN 102897331 A CN102897331 A CN 102897331A CN 2012103697032 A CN2012103697032 A CN 2012103697032A CN 201210369703 A CN201210369703 A CN 201210369703A CN 102897331 A CN102897331 A CN 102897331A
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Abstract
The invention relates to a blasting device capable of changing the pressure reduction rate. The blasting device comprises a throat component, a larynx, a blasting execution mechanism and a diameter changing mechanism, wherein the throat component is of a hollow tubular structure with two open ends and is provided with a fixed end communicated with a test chamber and an opening end extending into a negative pressure reservation chamber; the larynx is matched with the opening end of the throat component and used for realizing the communication and seal of the test chamber and the negative pressure reservation chamber; the blasting execution mechanism comprises a start-stop component and a locking component; the start-stop component is fixedly arranged relative to the throat component and drives the throat component to be opened or closed under the action of a power source; the locking component is arranged between the throat component and the larynx; and the diameter changing mechanism is fixedly arranged on the chamber wall of the test chamber, and the pressure reduction rate is changed by virtue of regulating the cross-sectional area of the diameter changing mechanism. The mechanical pressure-reduction blasting device is provided with the diameter changing mechanism, and by virtue of setting the opening degree of the door body of the diameter changing mechanism, the pressure reduction rate can be changed according to the specific test demands.
Description
Technical field
The present invention relates to a kind of demolition set of convertible decompression rate, belong to the decompression technology field.
Background technology
Human body or animal body are from the lower environment of the environmental exposure to that gaseous tension is higher gaseous tension the time, when particularly moment is forced to by the higher environmental exposure of gaseous tension to the environment of low gaseous tension, environment under low pressure may produce certain influence to the physiological status of health inherence, such as the instantaneous expansion of body internal cavity gas, the build-up of pressure damage; The oxygen partial pressure extremely low in the high-altitude causes fulminating anoxia, affects life security, thereby affects human body high-altitude life security and normal movable or operation.Above-mentioned situation generally occurs in aircraft cockpit material aging or fault of construction, or wears or flying bird is hit when wearing in high-altitude quilt attack, when the train car cabin of perhaps travelling on the plateau is broken up by slungshot or similarly other situations.Therefore, when this emergency situations occurs, at first, in order to guarantee flight safety, do not affect normal activity and operation, the party concerned must and adjust by some self training and adapt to the low new environment of this air pressure; Secondly, use the environment of this pressure conversion, experimental study and the emergent barrier propterty of checking for party concerned's protective gear.Want the accident doing one's utmost to avoid because above-mentioned event itself just belongs to people, therefore this process of simulation does not have feasibility in the environment of actual high-altitude or rarefaction of air.In addition because above-mentioned event scene, highly, the difference of environmental conditions and suffered degree of tortuosity, the asynchronism(-nization) that pressure changes, the infringement that party concerned and employed protective gear bear are just different.Therefore, for make this training and protective gear the development and the checking environment and above-mentioned outburst surroundings similar, make the training and the verification experimental verification data that obtain have more authenticity and practicality, the mechanical demolition set that has a kind of convertible decompression rate in training and protective gear development and certification testing equipment has just become problem demanding prompt solution in this technical field.
In the bursting test of the prior art, two cabin bodies of operated by rotary motion, the higher cabin body of gaseous tension is called laboratory module before the explosion, and the lower cabin body of the gaseous tension of laboratory module outside is called negative pressure deposit cabin, the decompression demolition set then is major equipment and the centre gangway in connection test cabin and negative pressure deposit cabin, this passage can only be fixing bore, and decompression rate and time parameter can not conversion.At present, no matter domestic or external, all be like this.
Although there are following shortcoming in the environment that the method for above-mentioned training and equipping certification testing can simulated pressure moment conversion, fixing relief passage in the process of using:
(1) decompression rate and time can not conversion, and the experimental study condition is limited;
(2) fixing decompression parameter can not satisfy the simulation of different aerospace flight vehicle explosive decompression conditions;
(3) fixing decompression rate exceeds the requirement of human body training of safety sometimes, affects training effect and safety.
Summary of the invention
Technical matters to be solved by this invention be fix decompression rate and the time of demolition set of the prior art, can not conversion, thereby a kind of demolition set of convertible decompression rate is provided.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of demolition set of convertible decompression rate comprises
The venturi assembly is the hollow tubular structures that two ends are not all sealed, and has the fixed end that is connected with laboratory module and the opening end that extend in the negative pressure deposit cabin, and the edge of described fixed end and laboratory module bulkhead are tightly connected;
Glottis cooperates with the opening end of described venturi assembly, and the realization laboratory module is communicated with and sealing with negative pressure deposit cabin;
The explosion actuating unit comprises opening/closing component and locked component, and described opening/closing component is fixedly installed with respect to described venturi assembly, and acts on the described glottis, promotes described glottis assembly and open or close under the effect of propulsion source; Described locked component is arranged between described venturi assembly and the described glottis;
Diameter changing mechanism, described diameter changing mechanism are fixedly installed on the bulkhead of laboratory module, come the speed of conversion decompression by the long-pending size of the overflow section of regulating described diameter changing mechanism.
The demolition set of above-mentioned convertible decompression rate, described diameter changing mechanism comprises
The door body device is comprised of at least one fan door-plate;
Railroad is fixedly installed on the laboratory module bulkhead that is connected with the fixed end of described venturi assembly, carry described door body device carry out before and after or about movement;
The door body drive, be arranged on a side of described door body mobile device, follow described door body captive joint by connecting device, comprise engine installation, driving device and anchor fitting, described engine installation provides power to drive described driving device transmission to driving device, described driving device make described Men Tixiang near or gradually direction far away move, described anchor fitting is fixed on described driving device on the laboratory module bulkhead that is connected with the fixed end of described venturi assembly.
The demolition set of above-mentioned convertible decompression rate, described door body device is by front door body assembly and overlapping the forming of back door body components, two fan door bodies of described front door body assembly are in the distance of open and close during greater than the width of self every fan door body, described front door body assembly drives described back door body assembly by being arranged on inhibiting device on described front door body assembly and the described back door body assembly two fan door bodies move, thereby with the fixed end complete closed of described venturi assembly or open fully; Described railroad comprises slide rail and glidepath.
The demolition set of above-mentioned convertible decompression rate, two fan Men Tiwei left side front door body and right side front door bodies of described front door body assembly, two fan Men Tiwei left side back door body and back door, right side bodies of described back door body assembly; Described inhibiting device be arranged on described inhibiting device on described left side front door body and the described right side front door body be the bar shaped position-limited trough of hollow bathtub construction and be arranged on described left side back door body and back door, right side body on, be adapted at the locating dowel pin that slides in the described position-limited trough.
The demolition set of above-mentioned convertible decompression rate also is provided with the restraint device that the described back door of restriction body assembly slides to midway location on the described glidepath.
The demolition set of above-mentioned convertible decompression rate, described restraint device comprise the position-limited lever of an end and described back door body captive joint, the limited support that runs through the orienting lug that described position-limited lever opposite side arranges, the pull back spring that links to each other with described orienting lug, links to each other with described pull back spring.
The demolition set of above-mentioned convertible decompression rate, engine installation in the described door body drive is stepping motor, driving device is leading screw and lead screw pair, anchor fitting is bearing seat, described stepping motor be connected leading screw and connect by described coupler, the connecting device between described lead screw pair and the described door body is Connection Block.
Technique scheme of the present invention has the following advantages compared to existing technology: the present invention is provided with diameter changing mechanism at machinery decompression demolition set, can be according to the concrete needs conversion decompression rate of test by the door body aperture size of setting described diameter changing mechanism.
Description of drawings
For content of the present invention is more likely to be clearly understood, the below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the position view of demolition set in whole depressurized system of convertible decompression rate of the present invention;
Fig. 2 is the overall perspective view of the demolition set of convertible decompression rate of the present invention;
Fig. 3 is the back view of diameter changing mechanism of the demolition set of convertible decompression rate of the present invention;
Fig. 4 is the front elevation of diameter changing mechanism of the demolition set of convertible decompression rate of the present invention;
Fig. 5 is the block diagram of diameter changing mechanism of the demolition set of convertible decompression rate of the present invention;
Reference numeral is expressed as among the figure: 1-venturi assembly, the 2-glottis, the 3-diameter changing mechanism, the 4-opening/closing component, the 5-locked component, the 6-stepping motor, the 7-lead screw pair, the 8-bearing seat, the 9-coupler, the 10-Connection Block, 11-left side front door body, 12-right side front door body, back door, 13-left side body, back door, 14-right side body, the 15-position-limited trough, the upper slide rail of 16-, the 17-glidepath, the 18-scale, the 19-position-limited lever, the 20-orienting lug, the 21-pull back spring, the 22-limited support, 23-stepping motor mounting bracket, 24-bearing seat mounting bracket, the 25-venturi supports, the 26-laboratory module, 27-negative pressure deposit cabin, the 28-seal channel.
The specific embodiment
The embodiment of the demolition set of a kind of convertible decompression rate of the present invention as depicted in figs. 1 and 2, comprise venturi assembly 1, glottis 2, explosion actuating unit and diameter changing mechanism 3, the demolition set of described convertible decompression rate is communicated with described laboratory module 26 and described negative pressure deposit cabin 27, and the periphery of described venturi assembly is surrounded with seal channel 28.
The hollow tubular structures that described venturi assembly 1 does not all seal for two ends, have the fixed end that is connected with laboratory module 26 and the opening end that extend in the negative pressure deposit cabin 27, the edge of described fixed end and laboratory module 26 bulkheads are tightly connected, described venturi assembly 1 comprises venturi, butt flange and assembly flange, described butt flange is arranged on the end face of described opening end, be provided with sealing band on the described butt flange, be used for sealing described glottis 2 and venturi; Described assembly flange is arranged on the periphery of described fixed end, is used for described venturi is installed to laboratory module 26, is provided with the venturi that supports described venturi assembly 1 in described venturi assembly 1 bottom and supports 25.
Described glottis 2 cooperates with the opening end of described venturi assembly 1, and realization laboratory module 26 is communicated with and sealing with negative pressure deposit cabin 27, cooperates with the described opening end of described venturi assembly 1, and realization laboratory module 26 is communicated with and sealing with negative pressure deposit cabin 27.
Described explosion actuating unit comprises opening/closing component 4 and locked component 5, and described opening/closing component 4 is fixedly installed with respect to described venturi assembly 1, and acts on the described glottis 2, promotes described glottis 2 assemblies and open or close under the effect of propulsion source; Described locked component 5 is arranged between described venturi assembly 1 and the described glottis 2, is used for the described glottis of closing 2 assemblies are locked, to realize the purpose of instantaneous decompression explosion.
Described diameter changing mechanism 3 is fixedly installed on the bulkhead of laboratory module 26, comes the speed of conversion decompression by the long-pending size of the overflow section of regulating described diameter changing mechanism 3.Such as Fig. 3,4, shown in 5, described diameter changing mechanism 3 comprises the door body device that is comprised of at least one fan door-plate, be fixedly installed on and carry the railroad that described door body device carries out sway on laboratory module 26 bulkheads that are connected with the fixed end of described venturi assembly 1, be arranged on a side of described door body mobile device by the door body drive of connecting device with described door body captive joint, described door body drive comprises engine installation, driving device and anchor fitting, described engine installation provides power to drive described driving device transmission to driving device, described driving device make described Men Tixiang near or gradually direction far away move, described anchor fitting is fixed on described driving device on laboratory module 26 bulkheads that are connected with the fixed end of described venturi assembly 1.Engine installation in the described door body drive is stepping motor 6, described stepping motor 6 is installed on laboratory module 26 bulkheads by stepping motor mounting bracket 23, driving device is lead screw pair 7, anchor fitting is bearing seat 8, described bearing seat 8 is installed on described laboratory module 26 bulkheads by bearing seat mounting bracket 24, described stepping motor 6 be connected lead screw pair 7 and connect by described coupler 9, the connecting device between described lead screw pair 7 and the described door body is Connection Block 10.
Described door body device is by front door body assembly and overlapping the forming of back door body components, two fan door bodies of described front door body assembly are in the distance of open and close during greater than the width of self every fan door body, described front door body assembly drives described back door body assembly by being arranged on inhibiting device on described front door body assembly and the described back door body assembly two fan door bodies move, thereby with the fixed end complete closed of described venturi assembly 1 or open fully; Two fan Men Tiwei left side front door body 11 and right side front door bodies 12 of described front door body assembly, two fan Men Tiwei left side back door body 13 and back door, right side bodies 14 of described back door body assembly, lateral edges away from described front door body of described glottis 2 is consistent with the edge shape of the opening end of described venturi assembly 1, is used for described opening end is sealed fully; Described inhibiting device is that the described inhibiting device that is arranged on described left side front door body 11 and the described right side front door body 12 is the bar shaped position-limited trough 15 of I-shape bathtub construction and is arranged on locating dowel pin on back door, described left side body 13 and back door, the right side body 14, that be adapted at slip in the described position-limited trough 15.
Described railroad comprises slide rail 16 and glidepath 17, be provided with the scale 18 of the aperture size of reaffirming described door body on the described upper slide rail 16, also be provided with the restraint device that restriction described back door body assembly slides to midway location on the described glidepath 17, described restraint device comprises the position-limited lever 19 of an end and described back door body captive joint, the limited support 22 that runs through the orienting lug 20 that described position-limited lever 19 opposite sides arrange, the pull back spring 21 that links to each other with described orienting lug 20, links to each other with described pull back spring 21.
Described decompression demolition set also is provided with Blasting Control mechanism, controls described decompression demolition set when glottis 2 is opened, and makes first described opening/closing component 4 reach predetermined crack force, then controls 5 pairs of described glottises 2 of described locked component and carries out release; When glottis 2 is closed, make first described opening/closing component 4 reach predetermined closing force, then control 5 pairs of described glottises 2 of described locked component and carry out locking, the Blasting Control mechanism described in the present embodiment is computer automatic control system.
In addition, the described decompression demolition set of present embodiment is that to adopt pressed gas be propulsion source, and propulsion source is controlled by pipeline system, for glottis 2 and explosion actuating unit provide power, drives the explosion actuating unit to switching, the locking and unlocking of described glottis 2.
Before bursting test begins, to prepare and check described decompression demolition set, opening/closing component 4 work by computer starting explosion mechanism, thereby close the glottis 2 of described explosion mechanism, then by computing machine according to decompression explosion required time, set the aperture size of left side front door body 11 and the right side front door body 12 of diameter changing mechanism 3, and then drive 6 work of described stepping motor, making described stepping motor 6 drive described transmission shafts and lead screw pair 7 makes described left side front door body 11 and right side front door body 12 along described upper slide rail 16 and described glidepath 17 to two side shiftings, stop after reaching the width of setting, be located at scale 18 on the described upper slide rail 16 and be used for reaffirming aperture between left side front door body 11 and the right side front door body 12, the aperture in the same size of the door body that makes it and set, after the aperture size between the left side front door body 11 of confirming described diameter changing mechanism 3 and the right side front door body 12 meets requirement of experiment, main control console is by clicking " explosion " button on the computing machine or the other commander staff in cabin by the key switch button on leaving office (both can only select the one operation), send and carry out the explosion instruction, begin to carry out the decompression bursting test of glottis 2 moments unlatching, described Lock Part carries out release to described glottis 2, described opening/closing component 4 is opened described glottis 2, then described glottis 2 is closed again under the control of described computer system, and then impel described locked component 5 to relock described glottis 2, proceed to test next time, if need to change the speed of decompression, reset aperture size between described left side front door body 11 and back door, the right side body 14 by described diameter changing mechanism 3 so, if keep original decompression rate constant, directly begin next time bursting test after then can and adjusting laboratory module 26 and negative pressure deposit cabin 27 initial pressures at the glottis 2 of closing described explosion mechanism.
It should be noted that, in different bursting tests, when the requirement of test decompression rate is larger, the aperture that described diameter changing mechanism 3 requires is just larger, at this moment only rely on described left side front door body 11 and right side front door body 12 just can realize the door body aperture of required setting, and back door, left side body 13 and back door, right side body 14 can be to the midway location slip of described diameter changing mechanism 3 under the restriction of the restraint device of described position-limited lever 19, orienting lug 20, the pull back spring 21 that links to each other with described orienting lug 20, limited support 22 compositions that link to each other with described pull back spring 21; When the test decompression rate requires hour, the aperture that described diameter changing mechanism 3 requires is just less, only rely on this moment described left side front door body 11 and right side front door body 12 can not realize the door body aperture of required setting fully, the locating dowel pin that is arranged on back door, described left side body 13 and the left side front door body 11 slides at the position-limited trough 15 interior midways location to described diameter changing mechanism 3 that are arranged on described left side front door body 11 and the right side front door body 12, fills the part that described front door body assembly can not seal the opening end of described glottis 2 assemblies.
As preferred embodiment, described restraint device comprises position-limited lever 19, orienting lug 20, pull back spring 21 and limited support 22, and as selectable embodiment, described restraint device can also be other elastomeric elements such as bar shaped rubber.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive, and the apparent variation of being extended out thus or the change still be among the protection domain of the invention.
Claims (7)
1. the demolition set of a convertible decompression rate is characterized in that, comprises
Venturi assembly (1) is the hollow tubular structures that two ends are not all sealed, and has the fixed end that is connected with laboratory module and the opening end that extend in the negative pressure deposit cabin, and the edge of described fixed end and laboratory module bulkhead are tightly connected;
Glottis (2) cooperates with the opening end of described venturi assembly (1), and the realization laboratory module is communicated with and sealing with negative pressure deposit cabin;
The explosion actuating unit, comprise opening/closing component (4) and locked component (5), described opening/closing component (4) is fixedly installed with respect to described venturi assembly (1), and acts on the described glottis (2), promotes described glottis (2) assembly and open or close under the effect of propulsion source; Described locked component (5) is arranged between described venturi assembly (1) and the described glottis (2);
Diameter changing mechanism (3), described diameter changing mechanism (3) is fixedly installed on the bulkhead of laboratory module, comes the speed of conversion decompression by the long-pending size of the overflow section of regulating described diameter changing mechanism (3).
2. the demolition set of convertible decompression rate according to claim 1 is characterized in that, described diameter changing mechanism (3) comprises
The door body device is comprised of at least one fan door-plate;
Railroad is fixedly installed on the laboratory module bulkhead that is connected with the fixed end of described venturi assembly (1), carry described door body device carry out before and after or about movement;
The door body drive, be arranged on a side of described door body mobile device, follow described door body captive joint by connecting device, comprise engine installation, driving device and anchor fitting, described engine installation provides power to drive described driving device transmission to driving device, described driving device make described Men Tixiang near or gradually direction far away move, described anchor fitting is fixed on described driving device on the laboratory module bulkhead that is connected with the fixed end of described venturi assembly (1).
3. the demolition set of convertible decompression rate according to claim 2, it is characterized in that, described door body device is by front door body assembly and overlapping the forming of back door body components, two fan door bodies of described front door body assembly are in the distance of open and close during greater than the width of self every fan door body, described front door body assembly drives described back door body assembly by being arranged on inhibiting device on described front door body assembly and the described back door body assembly two fan door bodies move, thereby with the fixed end complete closed of described venturi assembly (1) or open fully;
Described railroad comprises slide rail (16) and glidepath (17).
4. the demolition set of convertible decompression rate according to claim 3, it is characterized in that, two fan Men Tiwei left side front door body (11) and right side front door bodies (12) of described front door body assembly, two fan Men Tiwei left side back door body (13) and back door, right side bodies (14) of described back door body assembly; Described inhibiting device for be arranged on described inhibiting device on described left side front door body (11) and the described right side front door body (12) be the bar shaped position-limited trough (15) of hollow bathtub construction and be arranged on back door, described left side body (13) and back door, right side body (14) on, the locating dowel pin that is adapted at the middle slip of described position-limited trough (15).
5. according to claim 3 or the demolition set of 4 described convertible decompression rate, it is characterized in that, also be provided with the restraint device that the described back door of restriction body assembly slides to midway location on the described glidepath (17).
6. the demolition set of convertible decompression rate according to claim 5, it is characterized in that described restraint device comprises the position-limited lever (19) of an end and described back door body captive joint, the limited support (22) that runs through the orienting lug (20) that described position-limited lever (19) opposite side arranges, the pull back spring (21) that links to each other with described orienting lug (20), links to each other with described pull back spring (21).
7. the demolition set of arbitrary described convertible decompression rate according to claim 2-6, it is characterized in that, engine installation in the described door body drive is stepping motor (6), driving device is leading screw and lead screw pair (7), anchor fitting is bearing seat (8), described stepping motor (6) be connected leading screw and connect by described coupler (9), the connecting device between described lead screw pair (7) and the described door body is Connection Block (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369703.2A CN102897331B (en) | 2012-09-27 | 2012-09-27 | Blasting device capable of changing pressure reduction rate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369703.2A CN102897331B (en) | 2012-09-27 | 2012-09-27 | Blasting device capable of changing pressure reduction rate |
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| CN102897331A true CN102897331A (en) | 2013-01-30 |
| CN102897331B CN102897331B (en) | 2015-02-04 |
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| CN201210369703.2A Active CN102897331B (en) | 2012-09-27 | 2012-09-27 | Blasting device capable of changing pressure reduction rate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657523A (en) * | 2013-12-12 | 2014-03-26 | 贵阳鑫博士工程技术有限公司 | Low-pressure chamber connection throat structure |
| CN115571374A (en) * | 2022-10-25 | 2023-01-06 | 航宇救生装备有限公司 | Multi-electrode explosion pressure reduction simulation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08100604A (en) * | 1994-10-04 | 1996-04-16 | Mitsubishi Heavy Ind Ltd | Vibration-rotation test device for turbine blade |
| CN101008651A (en) * | 2006-12-08 | 2007-08-01 | 北京航空航天大学 | Test apparatus of large-scaled environment simulation |
| CN202295336U (en) * | 2011-09-09 | 2012-07-04 | 烟台宏远氧业有限公司 | Experiment cabin with temperature changing and explosive decompression composite function |
| CN202966678U (en) * | 2012-09-27 | 2013-06-05 | 中国人民解放军空军航空医学研究所 | Decompression rate-convertible blasting device |
-
2012
- 2012-09-27 CN CN201210369703.2A patent/CN102897331B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08100604A (en) * | 1994-10-04 | 1996-04-16 | Mitsubishi Heavy Ind Ltd | Vibration-rotation test device for turbine blade |
| CN101008651A (en) * | 2006-12-08 | 2007-08-01 | 北京航空航天大学 | Test apparatus of large-scaled environment simulation |
| CN202295336U (en) * | 2011-09-09 | 2012-07-04 | 烟台宏远氧业有限公司 | Experiment cabin with temperature changing and explosive decompression composite function |
| CN202966678U (en) * | 2012-09-27 | 2013-06-05 | 中国人民解放军空军航空医学研究所 | Decompression rate-convertible blasting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657523A (en) * | 2013-12-12 | 2014-03-26 | 贵阳鑫博士工程技术有限公司 | Low-pressure chamber connection throat structure |
| CN103657523B (en) * | 2013-12-12 | 2015-10-28 | 贵阳鑫博士工程技术有限公司 | A kind of Low-pressure chamber connection throat structure |
| CN115571374A (en) * | 2022-10-25 | 2023-01-06 | 航宇救生装备有限公司 | Multi-electrode explosion pressure reduction simulation device |
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| CN102897331B (en) | 2015-02-04 |
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