CN109630199B - Bionics-based explosion-proof door - Google Patents
Bionics-based explosion-proof door Download PDFInfo
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- CN109630199B CN109630199B CN201910131831.5A CN201910131831A CN109630199B CN 109630199 B CN109630199 B CN 109630199B CN 201910131831 A CN201910131831 A CN 201910131831A CN 109630199 B CN109630199 B CN 109630199B
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- 235000001968 nicotinic acid Nutrition 0.000 title claims abstract description 16
- 238000004880 explosion Methods 0.000 claims abstract description 142
- 229910052751 metal Inorganic materials 0.000 claims abstract description 81
- 239000002184 metal Substances 0.000 claims abstract description 81
- 239000012528 membrane Substances 0.000 claims abstract description 61
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 58
- 238000013022 venting Methods 0.000 claims abstract description 48
- 229920000271 Kevlar® Polymers 0.000 claims description 10
- 239000004761 kevlar Substances 0.000 claims description 10
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 description 6
- 230000001629 suppression Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to an explosion vent based on bionics, which comprises a reinforced concrete wall, an explosion venting cover, an explosion vent, explosion membranes, spring hinges, automatic lock catches, explosion-proof tubes, a pressure sensor and a control circuit, wherein the reinforced concrete wall and the explosion vent are mutually connected to form a groove-shaped structure with an n-shaped axial section, the explosion venting cover is embedded in the reinforced concrete wall and is hinged with the inner surface of the reinforced concrete wall through the spring hinges, the explosion-proof tubes are respectively arranged in the explosion venting cover and are formed by a plurality of metal square tubes with rectangular cross sections and mutually connected in parallel, the explosion membranes are uniformly distributed in each metal square tube along the axis of the metal square tube forming the explosion-proof tube, and four explosion membranes are respectively arranged in each metal square tube. Compared with the traditional explosion-proof door, the explosion-proof door effectively simplifies the equipment structure and reduces the self weight of the equipment, thereby greatly improving the flexibility and reliability of the installation, use and maintenance operation of the explosion-proof door equipment.
Description
Technical Field
The invention relates to an explosion door structure, and belongs to the technical field of explosion-proof equipment.
Background
In recent years, the coal yield and consumption of China are increasing under the promotion of the rapid development of national economy. In the major explosion accidents of coal mines at home and abroad, accidents caused by explosion vents occur sometimes, and every explosion accident can cause huge equipment damage, personal casualties and environmental damages, seriously threaten the life and property safety of people, so the explosion vents play an important role in reducing the damage caused by gas and coal dust explosion, the current explosion vents are usually formed by the traditional explosion vent main body with a high-strength structure and the emergency relief valve embedded on the explosion vent main body, although the use requirement can be met to a certain degree, on one hand, the current explosion vents have complicated structure, relatively large volume and self weight average and seriously insufficient flexibility in installation and use, on the other hand, the phenomena of damage increase caused by insufficient explosion-proof and explosion-venting functions and the like are easily caused, on the other hand, secondary disasters caused by the fact that external air flows into the mines due to too low internal air pressure after explosion venting and the like of the mines and the like are easily caused, meanwhile, the current explosion-proof door can not effectively detect the strength and the components of airflow generated by explosion while carrying out explosion-proof and explosion venting operations, so that the explosion-proof rescue can not obtain timely and accurate mine internal explosion damage and post-disaster environmental data, and great inconvenience is brought to the emergency rescue work.
Therefore, in order to meet the current situation, a brand new explosion vent structure is urgently needed to be developed to meet the requirement of practical use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the explosion door based on bionics, which effectively simplifies the equipment structure and reduces the self weight of the equipment compared with the traditional explosion door, thereby greatly improving the flexibility and reliability of the installation, use and maintenance operation of the explosion door equipment; meanwhile, on one hand, the flexibility and convenience of explosion suppression and explosion release operation control can be effectively realized, the impact force generated during explosion and the air quality component of the on-site environment after explosion can be accurately detected, reliable data reference is provided for subsequent rescue work, on the other hand, the condition that external air flow flows back to the explosion range through an explosion door due to the fact that the air pressure of an explosion part is reduced after explosion release can be effectively avoided, secondary disasters caused by air flow disturbance and the like of an explosion site due to the fact that the air flow flows back can be effectively prevented, in addition, the capability of effectively ventilating the explosion site can be effectively realized under the unpowered driving state, and the safety and efficiency of rescue and recovery operation after the explosion site is subjected to disaster are improved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to an explosion vent based on bionics, which comprises a reinforced concrete wall, explosion venting covers, an explosion vent, an explosion-proof membrane, a spring hinge, an automatic lock catch, an explosion-proof pipe, a pressure sensor and a control circuit, wherein the reinforced concrete wall is of a hollow cylindrical structure, the upper end surface of the reinforced concrete wall and the explosion-proof door are mutually connected and coaxially distributed, the reinforced concrete wall and the explosion-proof door jointly form a groove-shaped structure with an inverted U-shaped axial section, the effective height of the reinforced concrete wall is not lower than 150 mm, the explosion venting covers are of a semicircular structure with the same radius as that of the reinforced concrete wall, the two explosion venting covers are embedded in the reinforced concrete wall and symmetrically distributed along the axis of the reinforced concrete wall and are hinged with the inner surface of the reinforced concrete wall through the spring hinge, the two explosion venting covers are of a split structure and are connected through at least one automatic lock catch, and the axis of the explosion venting covers and the axis of the reinforced concrete wall form an included, when the included angle between the axes of the two explosion venting covers and the axis of the reinforced concrete wall is 0 degree, the two explosion venting covers jointly form a cylindrical structure which is coaxially distributed with the reinforced concrete wall, the side surfaces of the explosion venting covers are abutted against the side surfaces of the reinforced concrete wall, an explosion-proof pipe is respectively arranged in the explosion venting covers, the axes of the explosion-proof pipes are distributed in parallel with the axis of the reinforced concrete wall, and when the included angle between the axes of the two explosion venting covers and the axis of the reinforced concrete wall is 0 degree, the explosion-proof pipes in the two explosion venting covers form a regular quadrangular prism structure which is coaxially distributed with the reinforced concrete wall, the length of the explosion-proof pipe is 90-110 mm, the explosion-proof pipe is formed by a plurality of metal square pipes which are rectangular in cross section and are mutually connected in parallel, a plurality of explosion-proof films are uniformly distributed in each metal square pipe along the axes of the metal square pipes forming the explosion-proof pipe, and four explosion-proof films are respectively, every two rupture membranes form an explosion-proof group, the metal square pipe is uniformly divided into three sections of pipe cavities from top to bottom by the two explosion-proof groups along the axis direction of the metal square pipe, in the explosion-proof group, the rear end face of each rupture membrane is hinged with the side wall of the metal square pipe through a spring hinge, the axis of each rupture membrane and the axis of the metal square pipe form an included angle of 0-90 degrees, and when the included angle of each rupture membrane and the axis of the metal square pipe is 0 degree, the rupture membranes and the two explosion-proof films in the explosion-proof group jointly form a plate-shaped structure which is coaxial with the metal square pipe and has a rectangular cross section, meanwhile, the side surfaces of the rupture membranes abut against the inner side wall of the metal square pipe, a plurality of pressure sensors are respectively positioned at the positions of the spring hinges and are electrically connected with a control circuit, and the.
Furthermore, the upper end face and the lower end face of the explosion-proof pipe are distributed in parallel and level with the upper end face and the lower end of the explosion venting cover.
Furthermore, in the explosion venting cover, each explosion-proof pipe in the explosion venting cover comprises at least eight metal square pipes, the cross section areas of the metal square pipes are the same, and the areas of the upper end surface and the lower end surface of each metal square pipe are 30% -80% of the areas of the upper end surface and the lower end surface of the explosion venting cover.
Furthermore, each metal square pipe of the explosion-proof pipe is connected with each other through at least two sliding grooves, the sliding grooves are distributed in parallel with the axis of the metal square pipe, and the distance between every two adjacent metal square pipes is 0-5 mm.
Furthermore, when the distance between the metal square pipes is larger than 0, an elastic cushion layer is arranged between every two adjacent metal square pipes.
Furthermore, the rupture membranes are U-shaped groove-shaped structures in cross section, the groove bottoms of the rupture membranes are arc-shaped structures, and when the axes of the two rupture membranes in the same rupture group and the axis of the metal square tube form an included angle of 0 degree, the axial cross sections of the lower end surfaces of the two rupture membranes are W-shaped structures or any one of two continuous lower chord wave structures.
Furthermore, the explosion-proof membrane comprises a memory alloy metal keel and a tough Kevlar coating layer, the memory alloy metal keel is of a frame structure, the tough Kevlar coating layer is coated on the outer surface of the memory alloy metal keel, and the thickness of the tough Kevlar coating layer is not less than 3 mm.
Furthermore, in the metal square pipe, at least one air quality sensor is arranged on the inner surface of the metal square pipe between the two explosion-proof groups, and the air quality sensor is electrically connected with the control circuit.
Furthermore, the control circuit is a circuit system based on an industrial single chip microcomputer, and the control circuit is additionally provided with at least one data communication port.
Compared with the traditional explosion-proof door, the explosion-proof door effectively simplifies the equipment structure and reduces the self weight of the equipment, thereby greatly improving the flexibility and reliability of the installation, use and maintenance operation of the explosion-proof door equipment; meanwhile, on one hand, the flexibility and convenience of explosion suppression and explosion release operation control can be effectively realized, the impact force generated during explosion and the air quality component of the on-site environment after explosion can be accurately detected, reliable data reference is provided for subsequent rescue work, on the other hand, the condition that external air flow flows back to the explosion range through an explosion door due to the fact that the air pressure of an explosion part is reduced after explosion release can be effectively avoided, secondary disasters caused by air flow disturbance and the like of an explosion site due to the fact that the air flow flows back can be effectively prevented, in addition, the capability of effectively ventilating the explosion site can be effectively realized under the unpowered driving state, and the safety and efficiency of rescue and recovery operation after the explosion site is subjected to disaster are improved.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a rupture disk structure;
fig. 3 is a comparison schematic diagram of the working state of the explosion-proof membrane when no explosion air flow passes through and when the explosion air flow passes through.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention discloses an explosion vent based on bionics as shown in figures 1-3, which comprises a reinforced concrete wall 1, explosion venting covers 2, an explosion vent 3, an explosion-proof membrane 4, a spring hinge 5, automatic latches 6, an explosion-proof tube 7, a pressure sensor 8 and a control circuit 9, wherein the reinforced concrete wall 1 is a hollow cylindrical structure, the upper end surface of the reinforced concrete wall and the explosion vent 3 are mutually connected and coaxially distributed, the reinforced concrete wall 1 and the explosion vent 3 jointly form a groove-shaped structure with an axial section in a shape of Chinese character pi, the effective height of the reinforced concrete wall 1 is not lower than 150 mm, the explosion venting covers 2 are semicircular structures with the same radius as that of the reinforced concrete wall 1, the two explosion venting covers 2 are embedded in the reinforced concrete wall 1 and symmetrically distributed along the axis of the reinforced concrete wall 1 and are hinged with the inner surface of the reinforced concrete wall 1 through the spring hinge 5, the two explosion venting covers 2 are in a split structure and are connected through at least one automatic latch 6, the axial line of the explosion venting cover 2 and the axial line of the reinforced concrete wall 1 form an included angle of 0-90 degrees, when the included angle between the axial line of the two explosion venting covers 2 and the axial line of the reinforced concrete wall 1 is 0 degree, the two explosion venting covers 2 jointly form a cylindrical structure which is coaxially distributed with the reinforced concrete wall 1, the side surfaces of the two explosion venting covers 2 are abutted against the side surface of the reinforced concrete wall 1, an explosion-proof pipe 7 is respectively arranged in the explosion venting covers 2, the axial line of the explosion-proof pipe 7 is parallel to the axial line of the reinforced concrete wall 1, when the included angle between the axial line of the two explosion venting covers 2 and the axial line of the reinforced concrete wall 1 is 0 degree, the explosion-proof pipes 7 in the two explosion venting covers 2 form a regular quadrangular structure which is coaxially distributed with the reinforced concrete wall 1, the length of the explosion-proof pipe 7 is 90-110 mm, the explosion-proof films 4 are formed by a plurality of metal square pipes 71 which are rectangular in cross section and are mutually connected in parallel, the explosion-proof films 4 are uniformly distributed in each metal square pipe 71 along the axial line of the, wherein, in the four rupture membranes 4 positioned in the same metal square pipe 71, every two rupture membranes 4 form an explosion-proof group, the two explosion-proof groups equally divide the metal square pipe 71 into three sections of pipe cavities from top to bottom along the axial direction of the metal square pipe 71, in the explosion-proof group, the rear end surface of each rupture membrane 4 is hinged with the side wall of the metal square pipe 71 through a spring hinge 5, the axial line of the rupture membrane 4 forms an included angle of 0-90 degrees with the axial line of the metal square pipe 71, and when the included angle of the axial line of the rupture membrane 4 and the axial line of the metal square pipe 71 is 0 degree, the rupture membrane 4 and the two rupture membranes 4 in the explosion-proof group jointly form a plate-shaped structure which is coaxial with the metal square pipe 71 and has a rectangular cross section, meanwhile, the side surface of the rupture membrane 4 is abutted against the inner side wall of the metal square pipe 71, a plurality of pressure sensors 8 are respectively positioned at the positions of the, and are electrically connected to the pressure sensors 8, respectively.
The upper end face and the lower end face of the explosion-proof pipe 7 are distributed in parallel and level with the upper end face and the lower end of the explosion-proof cover 2, meanwhile, in the explosion-proof cover 2, each explosion-proof pipe in the explosion-proof cover 2 comprises at least eight metal square pipes 71, the cross section areas of the metal square pipes 71 are the same, and the areas of the upper end face and the lower end face of each metal square pipe 71 are 30% -80% of the areas of the upper end face and the lower end face of the explosion-proof cover 2.
In addition, each metal square pipe 71 of the explosion-proof pipe 7 is connected with each other through at least two sliding grooves 72, the sliding grooves 72 are distributed in parallel with the axis of the metal square pipe 71, the distance between every two adjacent metal square pipes 71 is 0-5 mm, and when the distance between every two adjacent metal square pipes 71 is larger than 0, an elastic cushion 73 is arranged between every two adjacent metal square pipes 71.
It is important to point out that the rupture membrane 4 is in a U-shaped groove-shaped structure with a cross section, the groove bottom is in an arc-shaped structure, when the axes of two rupture membranes 4 in the same rupture group and the axis of the metal square pipe 71 form an included angle of 0 degree, the axial cross section of the lower end surfaces of the two rupture membranes 4 is in a W-shaped structure or in any one of two continuous lower sine wave structures, the rupture membranes 4 comprise a memory alloy metal keel 41 and a tough Kevlar coating layer 42, the memory alloy metal keel 41 is in a frame structure, the tough Kevlar coating layer 42 is coated on the outer surface of the memory alloy metal keel 41, and the thickness of the tough Kevlar coating layer 42 is not less than 3 mm.
Preferably, at least one air quality sensor 10 is arranged on the inner surface of the metal square tube 71 between the two explosion-proof sets in the metal square tube 71, and the air quality sensor 10 is electrically connected with the control circuit 9.
In this embodiment, the control circuit 9 is a circuit system based on an industrial single chip, and the control circuit is further provided with at least one data communication port.
In the specific implementation of the invention, firstly, the reinforced concrete wall is built at the explosion venting position, then the explosion venting cover, the explosion vent, the explosion-proof membrane, the spring hinge, the automatic lock catch, the explosion-proof pipe, the pressure sensor and the control circuit are assembled, and the control circuit is electrically connected with an external monitoring system, thus completing the assembly operation of the invention.
In the operation process, when explosion does not occur, the explosion venting cover and the explosion vent are in a coaxial distribution state with the reinforced concrete wall, and the axis of the explosion-proof membrane is parallel to the axis of the reinforced concrete wall, so that the reinforced concrete wall is sealed in multiple ways and the requirements of explosion prevention and explosion suppression are met, wherein the main sources of the bearing capacity of explosion prevention and explosion prevention are the structural strength and the dead weight of the explosion venting cover, the explosion vent, the explosion-proof membrane, the spring hinge and the automatic lock catch.
In addition when the explosion takes place, and when explosion airflow pressure is greater than the elasticity and the rupture membrane dead weight of spring hinge, the explosion airflow at first drives the rupture membrane upwards and overturns, thereby preliminarily let out the explosion with the explosion airflow through the explosion-proof pipe, when increasing along with the explosive capacity, and explosion pressure is greater than the elasticity of spring hinge, let out when exploding lid dead weight and automatic hasp joint strength, then let out the explosion lid upwards and overturn, realize letting out comprehensively, the explosion vent is then opened when letting out explosion airflow power and being greater than the explosion vent dead weight and connecting location drive power, thereby realize letting out the explosion operation.
After explosion venting is finished, the explosion door and the explosion-proof membrane automatically reset under the action of the elastic force of the spring hinge and the dead weight of the explosion door and the explosion-proof membrane, so that the reinforced concrete wall is sealed, and external air flow is prevented from flowing backwards into an explosion area to cause disasters;
in addition, after the explosion happens when the explosion happens, on one hand, the pressure born by the explosion venting cover and the explosion-proof membrane can be accurately detected through each pressure sensor, so that the requirement for pre-judging explosion hazard is met, on the other hand, the air components in the scene during and after the explosion are detected through each air quality sensor, so that reliable reference data are provided for the scene rescue work, and the safety and the reliability of the scene rescue work are improved.
In the specific operation of the invention, the rupture membrane adopts a structure of combining the memory alloy metal keel and the tough Kevlar coating layer, so that the structural strength of the rupture membrane is ensured, and simultaneously, the toughness of the rupture membrane is improved later, thereby improving the high-temperature damage resistance and the shock loss resistance of the rupture membrane on one hand, and realizing the effect of protecting an explosion site without external power after the explosion occurs on the other hand.
Meanwhile, the structure and the principle of the explosion-proof membrane are consistent with those of a vein valve in a human blood vessel, and when explosion occurs and the explosion shock wave tube orifice flows in the direction, the explosion-proof membrane is attached to the tube wall, so that the metal square tube is unobstructed. When the pressure in the pipe is reduced, the explosion shock wave is caused to flow reversely. Under the impact of the reverse shock wave, the two explosion-proof membranes are opened and closed to prevent the shock wave from flowing backwards. Therefore, the function of the explosion-proof membrane is to make the explosion shock wave flow in one direction towards the pipe orifice, namely to act as a one-way valve. When the main ventilator stops running and the wellhead explosion-proof door cover is opened to ventilate by natural wind pressure, the direction of the bionic 'vein valve' is changed by up-down conversion, and the purpose of preventing backflow can be achieved by the same principle.
Meanwhile, two groups of barrier structures of the explosion-proof membrane are uniformly distributed in each metal square tube along the axis direction, so that the fault resistance of the explosion-proof membrane structure is effectively improved.
Compared with the traditional explosion-proof door, the explosion-proof door effectively simplifies the equipment structure and reduces the self weight of the equipment, thereby greatly improving the flexibility and reliability of the installation, use and maintenance operation of the explosion-proof door equipment; meanwhile, on one hand, the flexibility and convenience of explosion suppression and explosion release operation control can be effectively realized, the impact force generated during explosion and the air quality component of the on-site environment after explosion can be accurately detected, reliable data reference is provided for subsequent rescue work, on the other hand, the condition that external air flow flows back to the explosion range through an explosion door due to the fact that the air pressure of an explosion part is reduced after explosion release can be effectively avoided, secondary disasters caused by air flow disturbance and the like of an explosion site due to the fact that the air flow flows back can be effectively prevented, in addition, the capability of effectively ventilating the explosion site can be effectively realized under the unpowered driving state, and the safety and efficiency of rescue and recovery operation after the explosion site is subjected to disaster are improved.
It will be appreciated by persons skilled in the art that the present invention is not limited by the embodiments described above. The foregoing embodiments and description have been presented only to illustrate the principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention. Such variations and modifications are intended to be within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131831.5A CN109630199B (en) | 2019-02-22 | 2019-02-22 | Bionics-based explosion-proof door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131831.5A CN109630199B (en) | 2019-02-22 | 2019-02-22 | Bionics-based explosion-proof door |
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| Publication Number | Publication Date |
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| CN109630199A CN109630199A (en) | 2019-04-16 |
| CN109630199B true CN109630199B (en) | 2020-05-01 |
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| CN201910131831.5A Expired - Fee Related CN109630199B (en) | 2019-02-22 | 2019-02-22 | Bionics-based explosion-proof door |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111661505A (en) * | 2020-06-05 | 2020-09-15 | 河南豫氢装备有限公司 | Explosion venting top mechanism and using method thereof |
| CN112530671A (en) * | 2020-11-19 | 2021-03-19 | 浙江龙呈电力设备有限公司 | Oil-immersed transformer |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4118894A (en) * | 1977-05-27 | 1978-10-10 | Kennedy John M | Door frame and door assembly for a mine stopping |
| CN102410044B (en) * | 2011-07-14 | 2014-01-01 | 鸡西司瑞电气有限公司 | Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
| CN202451217U (en) * | 2011-12-27 | 2012-09-26 | 山西创奇实业有限公司 | Inclined shaft and footrill self-weight reset explosion door |
| KR101553984B1 (en) * | 2012-12-26 | 2015-09-30 | 김철우 | Blast resistance door for ship |
| CN203335112U (en) * | 2013-06-14 | 2013-12-11 | 河南理工大学 | Vertical air shaft anti-explosion door with automatic resetting function |
| CN205172635U (en) * | 2015-11-27 | 2016-04-20 | 枣庄和顺达机电设备有限公司 | Shaft is from compound explosion vent |
| CN105781364B (en) * | 2016-03-21 | 2018-03-30 | 哈尔滨工业大学 | Staggeredly Spliced steel plate RPC blast-resistant doors construction method |
| CN206246010U (en) * | 2016-11-21 | 2017-06-13 | 广东金刚玻璃科技股份有限公司 | A kind of blast shield door |
| CN106401647B (en) * | 2016-11-24 | 2018-08-28 | 中国石油大学(华东) | A kind of sound insulation vibration damping door and its installation method for the construction of drilling and blasting method Subway Tunnel |
| JP6563979B2 (en) * | 2017-06-08 | 2019-08-21 | 西松建設株式会社 | Soundproof door |
| CN208396613U (en) * | 2018-06-14 | 2019-01-18 | 合肥市永兴人防工程有限公司 | A kind of steel construction landing-type airtight blast door |
| CN208416613U (en) * | 2018-06-27 | 2019-01-22 | 嘉兴运达智能设备有限公司 | A kind of seamless structure railway tunnel protection door |
| CN108757035B (en) * | 2018-08-23 | 2024-01-26 | 扬州市江隆矿业设备有限公司 | Self-resetting up-down rotary type inclined shaft explosion-proof door |
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