CN103822753A - Pressure testing device for explosive shock wave in simulated deep water environment explosion test container - Google Patents

Pressure testing device for explosive shock wave in simulated deep water environment explosion test container Download PDF

Info

Publication number
CN103822753A
CN103822753A CN201410104940.5A CN201410104940A CN103822753A CN 103822753 A CN103822753 A CN 103822753A CN 201410104940 A CN201410104940 A CN 201410104940A CN 103822753 A CN103822753 A CN 103822753A
Authority
CN
China
Prior art keywords
explosive
wave pressure
piezoelectric transducer
metal bar
test
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410104940.5A
Other languages
Chinese (zh)
Other versions
CN103822753B (en
Inventor
钟冬望
黄小武
李琳娜
何理
司剑峰
朱宽
刘建程
殷秀红
操鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Science and Engineering WUSE
Original Assignee
Wuhan University of Science and Engineering WUSE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan University of Science and Engineering WUSE filed Critical Wuhan University of Science and Engineering WUSE
Priority to CN201410104940.5A priority Critical patent/CN103822753B/en
Publication of CN103822753A publication Critical patent/CN103822753A/en
Application granted granted Critical
Publication of CN103822753B publication Critical patent/CN103822753B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Geophysics And Detection Of Objects (AREA)

Abstract

The invention relates to a pressure testing device for explosive shock wave in a simulated deep water environment explosion test container. According to the technical scheme, an upper metal rod (1) and a lower metal rod (11) are correspondingly fixed to the upper part and the lower part of the inner wall of the simulated deep water environment explosion test container (4); 3-8 iron wires (10) are vertically connected to one side of a spherical explosive (2); the upper end and the lower end of each iron wire (10) are correspondingly connected with the upper metal rod (1) and the lower metal rod (11); a piezoelectric sensor (5) is fixed to each iron wire (10) respectively; each piezoelectric sensor (5) is positioned on the same horizontal line as the spherical explosive (2); each piezoelectric sensor (5) is electrically connected with a data acquisition card (9) through respective coaxial test cable (3); the data acquisition card (9) is connected with a computer (7) through a cable (8); explosive shock wave pressure testing software is installed in the computer (7). The pressure testing device has the characteristics of accurate testing, safety, reliability, convenience in installation and low cost.

Description

Simulation deepwater environment is container implode impact wave pressure measurer for explosive test
Technical field
The invention belongs to underwater blast wave pressure test field.Be specifically related to a kind of simulation deepwater environment explosive test container implode impact wave pressure measurer.
Technical background
Along with the Devoting Major Efforts To Developing utilization of human society to rivers,lakes and seas resource, submarine blast is more and more widely used in all kinds of Underwater Engineering, as waterway dredging, seismic prospecting and deep water reef explosion etc.Submarine blast belongs to multiple coupled cross discipline, and due to its complicacy, research is always take experiment as main.In order better to carry out the research of Underwater Engineering blasting technique, many scientific research institutions start to introduce satisfactory simulation deepwater environment explosive test container.
Utilize underwater blast wave pressure test device to monitor underwater blast wave, and then the propagation law of underwater blast wave is carried out to scientific research, this is the method generally adopting.At present, in the underwater blast wave pressure test device using, pressure transducer separates with charge amplifier, and connects by long cable, explosion wave pressure signal is by changed by external magnetic field effect in long cable process, thereby makes test result occur relatively large deviation; With in container implode impact wave pressure measurer, be mainly to use container inner wall weld metal base for fixation pressure sensor by the rope of suspension strap counterweight or in the explosive test of simulation deepwater environment in existing simulation deepwater environment explosive test.In the time simulating deepwater environment explosive test, for recording the underwater blast wave pressure at the spherical explosive diverse location of the distance place at same depth of water place in simulation deepwater environment explosive test container, there is poor reliability in existing proving installation, fixing not firm, the point position of sensor is difficult to the problems such as replacing, can not meet test demand.
Summary of the invention
The present invention is intended to overcome prior art defect, and object is to provide a kind of simulation deepwater environment explosive test accurate, safe and reliable, easy for installation and with low cost container implode impact wave pressure measurer of testing.
For achieving the above object, the present invention adopts following technical scheme: described device comprises piezoelectric transducer, data collecting card and computing machine.The explosive test of simulation deepwater environment is equipped with spherical explosive with container center place, is fixed with accordingly upper metal bar and lower metal bar in the explosive test of simulation deepwater environment with upper inside wall and the bottom of container.Vertically be connected with 3～8 iron wires in spherical explosive one side, one end of every iron wire is fixedly connected with upper metal bar, the other end is fixedly connected with lower metal bar, is 200mm～400mm near first iron wire of spherical explosive and the distance of spherical explosive, and the spacing of every iron wire equates.
Every iron wire is fixed with respectively piezoelectric transducer, each piezoelectric transducer and spherical explosive are positioned on same level line, each piezoelectric transducer is electrically connected with data collecting card through Splices cable dish by coaxial test cable separately, data collecting card is connected with computing machine by netting twine, and explosion wave pressure test software is housed in computing machine.
Described spherical explosive is the spherical explosive that surperficial precision of being wrapped up by metal cap press-fits.
Described upper metal bar is identical with the diameter of lower metal bar, and the diameter of upper metal bar and lower metal bar is 20～40mm.
The diameter of described 3～8 iron wires is identical, and the diameter of every iron wire is 1～3mm.
In the main flow of described explosion wave pressure test software:
Figure BDA0000479821770000021
represent the blast impulse wave pressure that piezoelectric transducer gathers at timing point n respectively;
Figure BDA0000479821770000022
represent the explosion wave pressure peak that each piezoelectric transducer gathers; I represents piezoelectric transducer serial number from inside to outside, the natural number that i is 1～8; N represents timing point sum, and N is 20000～50000.
The main flow of described explosion wave pressure test software is:
S1, initialization, arrange timing point sum N, timing point n=0,
Figure BDA0000479821770000023
S2, the cumulative n=n+1 of timing point;
S3, difference scan A/D1～A/D8, record the blast impulse wave pressure that each piezoelectric transducer gathers
Figure BDA0000479821770000024
S4, judgement
Figure BDA0000479821770000025
whether be greater than
Figure BDA0000479821770000026
if be greater than carry out S5, otherwise carry out S6;
S5、 P max i = P n i ;
S6, judge whether n is greater than N, carry out S7 if be greater than N, otherwise return to S2;
S7, the data that each piezoelectric transducer is gathered, respectively take timing point n as horizontal ordinate, the blast impulse wave pressure gathering with piezoelectric transducer
Figure BDA0000479821770000029
for ordinate, draw underwater blast wave pressure curve, output
Figure BDA00004798217700000210
Owing to adopting technique scheme, the present invention compared with prior art has following good effect:
1, test accurately.Piezoelectric transducer in the present invention can be fixed on iron wire easily, iron wire is connected with lower metal bar with upper metal bar again, strain after exceptionally straight and there is some tension, in blast process, guarantee that piezoelectric transducer can not be subject to underwater blast wave effect and depart from calibration position under water; Coaxial test cable, on upper metal bar or lower metal bar, can prevent that it is subject to underwater blast wave effect and damaged, guarantees accurately to obtain explosion wave pressure signal.
2, safe and reliable.Data collecting card is connected with computing machine by netting twine, can realize the data transmission of long distance, guarantees the safety of tester and instrument.
3, easy for installation.The present invention, according to concrete test demand, can change quantity and the position of iron wire and piezoelectric transducer, easy assembly and disassembly flexibly.
4, with low cost.Material therefor processing of the present invention is simple, and expense is cheap.
Therefore, the present invention has test feature accurate, safe and reliable, easy for installation and with low cost.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the main flow block diagram of explosion wave pressure test software of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, not the restriction to its protection domain.
Embodiment 1
A kind of simulation deepwater environment is container implode impact wave pressure measurer for explosive test.As shown in Figure 1, described device comprises piezoelectric transducer 5, data collecting card 9 and computing machine 7.The explosive test of simulation deepwater environment is equipped with spherical explosive 2 with container 4 centers, is fixed with accordingly upper metal bar 1 and lower metal bar 11 in the explosive test of simulation deepwater environment with upper inside wall and the bottom of container 4.Vertically be connected with 5 iron wires 10 in spherical explosive 2 one sides, one end of every iron wire 10 is fixedly connected with upper metal bar 1, the other end is fixedly connected with lower metal bar 11, first iron wire 10 near spherical explosive 2 is 200mm～400mm with the distance of spherical explosive 2, and the spacing of every iron wire 10 equates.
As shown in Figure 1, every iron wire 10 is fixed with respectively piezoelectric transducer 5, each piezoelectric transducer 5 is positioned on same level line with spherical explosive 2, each piezoelectric transducer 5 is electrically connected with data collecting card 9 through Splices cable dish 6 by coaxial test cable 3 separately, data collecting card 9 is connected with computing machine 7 by netting twine 8, and explosion wave pressure test software is housed in computing machine.
Described spherical explosive 2 is spherical explosives that surperficial precision of being wrapped up by metal cap press-fits.
Described upper metal bar 1 is identical with the diameter of lower metal bar 11, and the diameter of upper metal bar 1 and lower metal bar 11 is 20～30mm.
The diameter of described 5 iron wires 10 is identical, and the diameter of every iron wire 10 is 1～2mm.
In the main flow of described explosion wave pressure test software:
Figure BDA0000479821770000031
represent the blast impulse wave pressure that each piezoelectric transducer 5 gathers at timing point n respectively;
Figure BDA0000479821770000032
represent the explosion wave pressure peak that each piezoelectric transducer 5 gathers; I represents piezoelectric transducer 5 serial number from inside to outside, the natural number that i is 1～8; N represents timing point sum, and N is 20000～50000.
The main flow of described explosion wave pressure test software is as shown in Figure 2:
S1, initialization, arrange timing point sum N, timing point n=0,
Figure BDA0000479821770000034
S2, the cumulative n=n+1 of timing point;
S3, difference scan A/D1～A/D8, record the blast impulse wave pressure that each piezoelectric transducer 5 gathers
Figure BDA0000479821770000033
S4, judgement
Figure BDA0000479821770000041
whether be greater than
Figure BDA0000479821770000042
if be greater than
Figure BDA0000479821770000043
carry out S5, otherwise carry out S6;
S5、 P max i = P n i ;
S6, judge whether n is greater than N, carry out S7 if be greater than N, otherwise return to S2;
S7, the data that each piezoelectric transducer 5 is gathered, respectively take timing point n as horizontal ordinate, the blast impulse wave pressure gathering with piezoelectric transducer 5
Figure BDA0000479821770000045
for ordinate, draw underwater blast wave pressure curve, output
Figure BDA0000479821770000046
Embodiment 2
A kind of simulation deepwater environment is container implode impact wave pressure measurer for explosive test.Except following technical parameter, all the other are with embodiment 1:
Vertically be connected with 3～4 or 6～8 iron wires 10 in spherical explosive 2 one sides;
The diameter of upper metal bar 1 and lower metal bar 11 is 30～40mm;
The diameter of described 3～4 or 6～8 iron wires 10 is identical, and the diameter of every iron wire 10 is 2～3mm.
This embodiment compared with prior art has following good effect:
1, test accurately.Piezoelectric transducer 5 in this embodiment can be fixed on iron wire 10 easily, iron wire 10 is connected with lower metal bar 11 with upper metal bar 1 again, strain after exceptionally straight and there is some tension, in blast process, guarantee that piezoelectric transducer 5 can not be subject to underwater blast wave effect and depart from calibration position under water; Coaxial test cable on upper metal bar 1 or lower metal bar 11, can prevent that it is subject to underwater blast wave effect and damaged, guarantees accurately to obtain explosion wave pressure signal around 3.
2, safe and reliable.Data collecting card 9 is connected with computing machine 7 by netting twine 8, can realize the data transmission of long distance, guarantees the safety of tester and instrument.
3, easy for installation.This embodiment, according to concrete test demand, can change quantity and the position of iron wire 10 and piezoelectric transducer 5, easy assembly and disassembly flexibly.
4, with low cost.The processing of this embodiment material therefor is simple, and expense is cheap.
Therefore, this embodiment has test feature accurate, safe and reliable, easy for installation and with low cost.

Claims (5)

1. a container implode impact wave pressure measurer for the explosive test of simulation deepwater environment, is characterized in that described device comprises piezoelectric transducer (5), data collecting card (9) and computing machine (7); Simulation deepwater environment is equipped with spherical explosive (2) in container (4) center for explosive test, is fixed with accordingly upper metal bar (1) and lower metal bar (11) in upper inside wall and the bottom of simulation deepwater environment container (4) for explosive test; Vertically be connected with 3～8 iron wires (10) in spherical explosive (2) one sides, one end of every iron wire (10) is fixedly connected with upper metal bar (1), the other end is fixedly connected with lower metal bar (11), be 200mm～400mm near first iron wire (10) of spherical explosive (2) and the distance of spherical explosive (2), the spacing of every iron wire (10) equates;
Every iron wire (10) is fixed with respectively piezoelectric transducer (5), each piezoelectric transducer (5) is positioned on same level line with spherical explosive (2), each piezoelectric transducer (5) is electrically connected with data collecting card (9) through Splices cable dish (6) by coaxial test cable (3) separately, data collecting card (9) is connected with computing machine (7) by netting twine (8), and explosion wave pressure test software is housed in computing machine (7).
2. according to container implode impact wave pressure measurer for the simulation deepwater environment explosive test described in claims 1, it is characterized in that described spherical explosive (2) is the spherical explosive that surperficial precision of being wrapped up by metal cap press-fits.
3. according to container implode impact wave pressure measurer for the simulation deepwater environment explosive test described in claims 1, it is characterized in that described upper metal bar (1) is identical with the diameter of lower metal bar (11), the diameter of upper metal bar (1) and lower metal bar (11) is 20～40mm.
4. according to container implode impact wave pressure measurer for the simulation deepwater environment explosive test described in claims 1, it is characterized in that the diameter of described 3～8 iron wires (10) is identical, the diameter of every iron wire (10) is 1～3mm.
5. according to container implode impact wave pressure measurer for the simulation deepwater environment explosive test described in claims 1, it is characterized in that in the main flow of described explosion wave pressure test software:
represent the blast impulse wave pressure that each piezoelectric transducer (5) gathers at timing point n respectively;
Figure FDA0000479821760000012
represent the explosion wave pressure peak that each piezoelectric transducer (5) gathers; I represents piezoelectric transducer (5) serial number from inside to outside, the natural number that i is 1～8; N represents timing point sum, and N is 20000～50000;
The main flow of described explosion wave pressure test software is:
S1, initialization, arrange timing point sum N, timing point n=0,
Figure FDA0000479821760000013
S2, the cumulative n=n+1 of timing point;
S3, difference scan A/D1～A/D8, record the blast impulse wave pressure that each piezoelectric transducer (5) gathers
Figure FDA0000479821760000014
S4, judgement whether be greater than
Figure FDA0000479821760000016
if be greater than
Figure FDA0000479821760000017
carry out S5, otherwise carry out S6;
S5、 P max i = P n i ;
S6, judge whether n is greater than N, carry out S7 if be greater than N, otherwise return to S2;
S7, the data that each piezoelectric transducer (5) is gathered, respectively take timing point n as horizontal ordinate, the blast impulse wave pressure gathering with piezoelectric transducer (5)
Figure FDA0000479821760000021
for ordinate, draw underwater blast wave pressure curve, output
Figure FDA0000479821760000022
CN201410104940.5A 2014-03-20 2014-03-20 Simulation deepwater environment explosive test container implode impact wave pressure measurer Active CN103822753B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410104940.5A CN103822753B (en) 2014-03-20 2014-03-20 Simulation deepwater environment explosive test container implode impact wave pressure measurer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410104940.5A CN103822753B (en) 2014-03-20 2014-03-20 Simulation deepwater environment explosive test container implode impact wave pressure measurer

Publications (2)

Publication Number Publication Date
CN103822753A true CN103822753A (en) 2014-05-28
CN103822753B CN103822753B (en) 2015-11-18

Family

ID=50757922

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410104940.5A Active CN103822753B (en) 2014-03-20 2014-03-20 Simulation deepwater environment explosive test container implode impact wave pressure measurer

Country Status (1)

Country Link
CN (1) CN103822753B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486452A (en) * 2015-12-31 2016-04-13 张宇峰 Comparison-type calibration method for shock wave measurement
CN105571885A (en) * 2015-12-22 2016-05-11 中国船舶重工集团公司第七○二研究所 Test device simulating deepwater environment explosion
CN105606267A (en) * 2015-12-31 2016-05-25 中国船舶重工集团公司第七○二研究所 Measuring device and method of explosive underwater explosion power
CN108061789A (en) * 2017-11-27 2018-05-22 北京理工大学 A kind of simulation Underwater Explosion test explosive strength test device
CN108593520A (en) * 2018-05-07 2018-09-28 河南工程学院 Electric pulse coal petrography fracturing anatonosis experimental system and experimental method under a kind of air environment
CN109974915A (en) * 2019-04-11 2019-07-05 中国矿业大学(北京) A kind of water shooting pressure test experimental system and method
CN110440980A (en) * 2019-09-03 2019-11-12 重庆交通大学 A kind of supercritical CO2Phase conversion pulse is lauched biological effect test macro and method
CN114814155A (en) * 2022-05-07 2022-07-29 安徽理工大学 Test device for simulating explosion shock wave pressure in deep water free field environment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894317A (en) * 1954-06-07 1959-07-14 Spence T Marks Method for constructing a barium titanate blast velocity gauge
CN2093392U (en) * 1991-05-20 1992-01-15 华东工学院 High-frequency response piezo-electric film type pressure transducer
RU2296966C2 (en) * 2005-04-11 2007-04-10 Российская Федерация, от имени которой выступает Государственный заказчик - Федеральное агентство по атомной энергии Device for measuring parameters of impulse pressure
CN102226673A (en) * 2011-04-29 2011-10-26 昆明理工大学 Miniature exploder for testing deep sea pressure resistance of explosive
CN102253083A (en) * 2011-05-07 2011-11-23 西安近代化学研究所 Detonation performance test method for high-energy imploding explosive
CN103645293A (en) * 2013-11-28 2014-03-19 安徽理工大学 Method for testing actuating pressure of explosion contact surface of explosive and test device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894317A (en) * 1954-06-07 1959-07-14 Spence T Marks Method for constructing a barium titanate blast velocity gauge
CN2093392U (en) * 1991-05-20 1992-01-15 华东工学院 High-frequency response piezo-electric film type pressure transducer
RU2296966C2 (en) * 2005-04-11 2007-04-10 Российская Федерация, от имени которой выступает Государственный заказчик - Федеральное агентство по атомной энергии Device for measuring parameters of impulse pressure
CN102226673A (en) * 2011-04-29 2011-10-26 昆明理工大学 Miniature exploder for testing deep sea pressure resistance of explosive
CN102253083A (en) * 2011-05-07 2011-11-23 西安近代化学研究所 Detonation performance test method for high-energy imploding explosive
CN103645293A (en) * 2013-11-28 2014-03-19 安徽理工大学 Method for testing actuating pressure of explosion contact surface of explosive and test device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
武海军等: "不同耦合装药下岩石的应力波传播特性", 《矿业研究与开发》 *
王长利等: "容器内爆炸多传感器测试系统的原理设计与应用", 《实验力学》 *
胡永乐等: "应变式压杆压力传感器在冲击波载荷测试中的应用", 《实验力学》 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571885A (en) * 2015-12-22 2016-05-11 中国船舶重工集团公司第七○二研究所 Test device simulating deepwater environment explosion
CN105571885B (en) * 2015-12-22 2017-11-10 中国船舶重工集团公司第七○二研究所 Simulate deepwater environment explosion testing device
CN105486452A (en) * 2015-12-31 2016-04-13 张宇峰 Comparison-type calibration method for shock wave measurement
CN105606267A (en) * 2015-12-31 2016-05-25 中国船舶重工集团公司第七○二研究所 Measuring device and method of explosive underwater explosion power
CN105606267B (en) * 2015-12-31 2018-06-12 中国船舶重工集团公司第七○二研究所 The measuring device and method of explosive underwater explosion power
CN105486452B (en) * 2015-12-31 2018-11-13 张宇峰 Shock wave tests comparison-type scaling method
CN108061789A (en) * 2017-11-27 2018-05-22 北京理工大学 A kind of simulation Underwater Explosion test explosive strength test device
CN108593520A (en) * 2018-05-07 2018-09-28 河南工程学院 Electric pulse coal petrography fracturing anatonosis experimental system and experimental method under a kind of air environment
CN109974915A (en) * 2019-04-11 2019-07-05 中国矿业大学(北京) A kind of water shooting pressure test experimental system and method
CN109974915B (en) * 2019-04-11 2023-11-17 中国矿业大学(北京) System and method for testing explosion pressure in water
CN110440980A (en) * 2019-09-03 2019-11-12 重庆交通大学 A kind of supercritical CO2Phase conversion pulse is lauched biological effect test macro and method
CN114814155A (en) * 2022-05-07 2022-07-29 安徽理工大学 Test device for simulating explosion shock wave pressure in deep water free field environment

Also Published As

Publication number Publication date
CN103822753B (en) 2015-11-18

Similar Documents

Publication Publication Date Title
CN103822753B (en) Simulation deepwater environment explosive test container implode impact wave pressure measurer
Hung et al. Dynamic response of cylindrical shell structures subjected to underwater explosion
CN108106965A (en) A kind of seabed sediment acoustics and physical parameter in-situ synchronization measuring device and method
CN202033164U (en) Testing device capable of simulating uniform-flow vortex-induced vibration of submarine pipeline
CN104164860A (en) Gravity type pore pressure dynamic sounding device for seabed shallow soil
CN102147321A (en) Uniform flow vortex-induced vibration simulation tester for seabed pipeline
NO20110034A1 (en) System for painting shear stress in well rudder
CN105092699A (en) Rock ultrasonic testing system and method for producing high temperature and high pressure three-component ultrasonic probe
CN203745134U (en) Explosion shock wave data acquisition device in container for simulated deep water explosion test
CN105735971A (en) Drilling hole depth detection system based on elastic waves and detection method thereof
CN204165971U (en) A kind of emulsion [explosive water resistant compressive property detection device
MX2012005138A (en) Solid seismic streamer cable and method.
CN104407375A (en) Underground probe of earthquake prediction instrument
CN206756749U (en) The data acquisition device of bottom sediment original position acoustic measurement system
CN105388219B (en) Test the piezoelectric ring excitation apparatus and laboratory testing rig of bulk material shear wave velocity
CN102107716A (en) Liquid tank pool test monitoring device of large-scale liquefied petroleum and natural gas carrier
CN203035195U (en) Source-spacing-adjustable acoustic logging sonic system
CN103743638A (en) Simulated composite loading device for explosive wave
CN202204937U (en) Detection transmission module of seismic prospecting instrument
CN102809757B (en) Seismic refraction wave exploration method for cross section of river bed and device thereof
CN108801450A (en) Deep rock mass vibration monitor system and its method based on acceleration transducer steel pipe
CN208171488U (en) Four component in-situ stress monitoring devices
CN202018508U (en) Underwater acoustic detector
US10072497B2 (en) Downhole acoustic wave sensing with optical fiber
EP3407093B1 (en) Calibration based on twist and orientation for a towed object

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20140528

Assignee: Hubei Haosheng Explosives engineering Co.,Ltd.

Assignor: WUHAN University OF SCIENCE AND TECHNOLOGY

Contract record no.: X2023980036415

Denomination of invention: A Pressure Testing Device for Explosion Shock Wave in Containers for Simulating Deepwater Environment Explosion Testing

Granted publication date: 20151118

License type: Common License

Record date: 20230609

EE01 Entry into force of recordation of patent licensing contract