CN113250593A - Explosion-proof people's air defense door - Google Patents
Explosion-proof people's air defense door Download PDFInfo
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- CN113250593A CN113250593A CN202110451500.7A CN202110451500A CN113250593A CN 113250593 A CN113250593 A CN 113250593A CN 202110451500 A CN202110451500 A CN 202110451500A CN 113250593 A CN113250593 A CN 113250593A
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- rubber ring
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- 230000007123 defense Effects 0.000 title claims abstract description 39
- 239000000872 buffer Substances 0.000 claims abstract description 189
- 238000004880 explosion Methods 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 229920000742 Cotton Polymers 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000012796 inorganic flame retardant Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 32
- 238000007789 sealing Methods 0.000 abstract description 21
- 239000007789 gas Substances 0.000 description 57
- 230000003139 buffering effect Effects 0.000 description 27
- 238000010304 firing Methods 0.000 description 9
- 230000002265 prevention Effects 0.000 description 9
- 230000006378 damage Effects 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/12—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against air pressure, explosion, or gas
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention belongs to the field of civil air defense engineering, and particularly relates to an explosion-proof civil air defense door which comprises a door body and a door frame; a first buffer cavity and a second buffer cavity are fixedly arranged in the door body; a cavity is formed between the first buffer cavity and the second buffer cavity; a buffer cylinder is fixedly arranged in the cavity; an air passage is formed in the buffer cylinder; a buffer plug is arranged in the air passage in a sliding manner; the buffer plug is internally embedded with a strong magnetic block; a door seal groove is formed in the contact surface of the door body and the door frame; a rubber ring is fixedly arranged in the door seal groove; expandable graphite is mixed in the rubber ring material; the rubber ring is hollow, and the hollow part of the rubber ring is fixedly connected with a pipeline; the inner space of the rubber ring is communicated with the first buffer cavity and the second buffer cavity through pipelines; the invention has simple structure, and the civil air defense door can effectively weaken the impact force generated by explosion and ensure the sealing effect of the civil air defense door.
Description
Technical Field
The invention belongs to the field of civil air defense engineering, and particularly relates to an explosion-proof civil air defense door.
Background
The civil air defense door is a door of an entrance and an exit of civil protection engineering, has clear classification and comprises various civil air defense devices such as common single-leaf and double-leaf protective airtight doors and airtight doors, and a movable threshold single-leaf and double-leaf protective airtight door and an airtight door. The existing civil air defense door is mostly a protective door with one layer of hard steel plates, and in various civil air defense door types, the reinforced concrete civil air defense door is generally applied, has a simple structure, is mostly used for preventing high-strength impact, has poor impact resistance effect due to the impact force received when impacted, and is easy to damage the civil air defense door due to the impact force generated by explosion, thereby leading the protective effect of the civil air defense door to be reduced.
The prior art also has some technical proposals, such as the Chinese patent with application number CN201911011357.9, including a door body and a plurality of steel balls filled in the door body, the steel ball gaps are filled with metal solution, the steel balls are connected into a whole after the metal solution is solidified, when the door body is impacted by explosion, the steel balls in the door body are deformed, the explosion generates force release, the door body is provided with a frame, the surface of the inner ring of the frame is fixedly connected with a circle of gas storage box, a sealing ring is sleeved on the frame, the gas storage box is deformed to extrude the internal gas into the sealing ring when the explosion generates, the door seal is blocked, but because the hollow steel balls added in the door body are spherical, and the steel balls are filled with condensed metal all around, when the impact force of the explosion impacts the door body, the surface of the steel balls is uniformly stressed, and the internal gas can not be discharged, so that the steel balls are difficult to deform, thereby affecting the force release effect of the door body to the explosion, at the same time, can produce after the gas storage tank takes place deformation and kick-backs, lead to the sealing washer can't keep good inflation state, influence the sealed effect of people's air defense door, the high temperature that the explosion produced also can be to the sealing washer firing, makes the sealing washer damage, can't reach the safeguard effect of people's air defense door.
Disclosure of Invention
The invention provides an explosion-proof type civil air defense door, which aims to make up the defects of the prior art and solve the problems that the civil air defense door is difficult to release force to explosion impact and the door body is difficult to seal after being deformed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an explosion-proof type civil air defense door, which comprises a door body and a door frame; the door frame is fixedly arranged on a wall body; the door body is arranged inside the door frame and is rotationally connected with the door frame; the door body is of a steel structure wrapped by a steel plate; a first buffer cavity and a second buffer cavity are fixedly arranged in the door body; the first buffer cavity and the second buffer cavity are symmetrically distributed in the door body; a cavity is formed between the first buffer cavity and the second buffer cavity; the thickness of the steel plate at the corresponding area of the cavity is smaller than that of the rest positions; a buffer cylinder is fixedly arranged in the cavity; the buffer cylinders are uniformly distributed in the cavity; one end of the buffer cylinder is fixed on the side wall of the buffer cavity in the cavity; the other end of the buffer cylinder is fixed on the side wall of the buffer cavity, which is positioned in the cavity; an air passage is formed in the buffer cylinder; the first buffer cavity is communicated with the second buffer cavity through an air passage;
when the explosion-proof door works, the rotating door body and the door frame form a closed state, when the left side of the door body shown in the figure explodes, the door body is impacted by explosion, because the steel plate is thinner at one part of the buffer cavity, the steel plate at one part of the buffer cavity is influenced by the explosion impact to generate depression, and further, the force leakage effect is generated on the impact force of the explosion, the acting force of the impact force generated by the explosion on the peripheral frame of the door body is reduced, the deformation or the fragmentation of the main frame of the door body is avoided, meanwhile, the gas in the first buffer cavity is compressed, the gas pressure in the first buffer cavity is rapidly increased, the air in the first buffer cavity enters the gas passage in the buffer cylinder, the gas receives the friction force of the inner wall of the gas passage 6 when passing through the gas passage 6, the flow rate and the impact force of the gas are reduced, the impact force generated by the, and the steel sheet thickness that buffer chamber two departments correspond is thinner, and the steel sheet that buffer chamber two correspond produces protrudingly, further releases power to the impact force of explosion to alleviate a body internal pressure, guarantee the explosion-proof effect of people's air defense door.
Preferably, the air passage comprises a straight air passage and a spherical air passage; the straight air passages in the air passages are alternately communicated with the spherical air passages, and both ends of each air passage are straight air passages; the radius of the spherical air passage is greater than that of the straight air passage, and the length of the spherical air passage is greater than that of the straight air passage; a sliding rod is fixedly arranged in the cavity; one end of the sliding rod is fixedly arranged on the side wall of the cavity close to the first buffer cavity; the other end of the sliding rod is fixedly arranged on the side wall of the cavity close to the buffer cavity II; the central axis of the sliding rod is superposed with the central axis of the straight air passage; the two ends of the sliding rod are fixedly provided with baffles; the baffle is arranged inside the spherical air passage and close to the straight air passage; the sliding rod is provided with a buffer plug in a sliding manner; the buffer plug is cylindrical, and the central axis of the buffer plug is superposed with the central axis of the sliding rod; the length of the buffer plug is smaller than that of the straight air channel; the radius of the buffer plug is equal to that of the straight air channel, and the buffer plug and the inner wall of the straight air channel generate friction;
the during operation, gaseous entering air flue in the buffer chamber one, and simultaneously, buffering stopper left side atmospheric pressure is greater than right side atmospheric pressure, the buffering stopper slides right on the slide bar under the atmospheric pressure effect, sliding friction takes place with straight air flue inner wall when buffering stopper slides and gets into straight air flue, convert gaseous energy in the buffer chamber one into internal energy through the friction, further weaken the impact force that the explosion produced, when buffering stopper process spherical air flue, gaseous clearance through buffering stopper and spherical air flue directly gets into buffer chamber two, reduce the atmospheric pressure in the buffer chamber one fast, prevent that buffer chamber one inside pressure is too big to lead to the cavity to burst, and simultaneously, gaseous frictional resistance who receives spherical air flue inner wall when passing through spherical air flue, further reduce gaseous energy, reduce the impact that causes the door body main frame.
Preferably, the surface material of the buffer plug is polytetrafluoroethylene; a strong magnetic block is embedded in the buffer plug; the strong magnetic block is cylindrical, and two magnetic poles are arranged at two ends of the cylinder;
the during operation, under gaseous pressure effect, the buffering stopper slides on the slide bar, when passing through the straight gas way, buffering stopper and straight gas way inner wall produce the friction, and simultaneously, the polytetrafluoroethylene material on buffering stopper surface guarantees that buffering stopper and straight gas way inner wall produce sliding friction, prevent that frictional force from leading to buffering stopper jam straight gas way excessively, and simultaneously, when the buffering stopper slides in the gas way, the steel body of buffer tube lateral wall cuts the magnetic induction line of the inside strong magnet of buffering stopper, produce induced-current in the buffer tube lateral wall steel body, according to lenz's law, the buffering stopper receives the ampere force opposite with buffering stopper direction of motion, further carry out the exorcise effect to the explosion impact force, and simultaneously, the ampere force acting further consumes the energy that the explosion produced, reduce the impact that the explosion caused the door body main frame.
Preferably, a door seal groove is formed in the side face, in contact with the door frame, of the door body; a rubber ring is fixedly arranged in the door seal groove; the surface of the rubber ring is attached to the surface of the door seal groove; the rubber ring is hollow; pipelines are fixedly connected to the first buffer cavity and the second buffer cavity; the other end of the pipeline is fixedly connected to the rubber ring; the space in the rubber ring is communicated with the pipeline; a check valve is fixedly arranged in the pipeline;
when the door works, under the action of the sunken extrusion of the steel plate, the air pressure in the first buffer cavity is greater than the air pressure in the rubber ring, the air in the first buffer cavity enters the space in the rubber ring through the pipeline, the air pressure in the rubber ring is greater than the external atmospheric pressure, the rubber ring expands, the expanded rubber ring is tightly attached to the door frame to achieve the sealing effect and block harmful gas, meanwhile, the air in the first buffer cavity enters the second buffer cavity through the air passage, the air pressure in the second buffer cavity is greater than the air pressure in the rubber ring, the air in the second buffer cavity enters the space in the rubber ring through the pipeline to further increase the internal air pressure of the rubber ring and increase the expansion of the rubber ring, the sealing effect of the rubber ring on the door body and the door frame is enhanced, the door body is guaranteed to keep good sealing with the door frame when the door body is slightly deformed due to the explosion impact, and the harmful gas generated by the explosion is prevented from entering the other side through a gap, guarantee the protective effect of people's air defense door, simultaneously, the setting of pipeline stop return valve has guaranteed that the inside atmospheric pressure of rubber circle keeps at the maximum atmospheric pressure state, and the rubber circle is in best encapsulated situation always when guaranteeing to explode, prevents that harmful gas from revealing.
Preferably, an inorganic flame retardant is added into the rubber ring; expandable graphite is added into the rubber ring; the proportion of the expandable graphite in the rubber ring is 40-45 wt%;
the during operation, the explosion produces a large amount of heats and is accompanied with the conflagration, the rubber circle receives the firing, the addition of inorganic fire retardant in the rubber circle material, the damage speed of rubber circle under the flame firing is slowed down, guarantee the sealing effect of rubber circle, rubber circle material main part is rubber, guarantee good toughness, prevent that the rubber circle from aerifing the inflation and expanding and break, and simultaneously, high temperature arouses that expandable graphite in the rubber circle material takes place the inflation, the sealing effect of reinforcing rubber circle, and simultaneously, the rubber circle receives when long-time strong firing leads to breaking, expandable graphite's interpolation still enables the rubber circle inflation, guarantee the sealing effect of rubber circle, prevent harmful gas's invasion, guarantee the protective effect of people's air defense door.
Preferably, fireproof soundproof cotton is filled in the gap in the cavity;
the during operation, the explosion produces violent heat and sound, and the thermal-insulated effect of fire prevention of the setting reinforcing door body of fire prevention soundproof cotton in the cavity reduces the range of rise of people's air defense door opposite side temperature, and simultaneously, the sound of fire prevention soundproof cotton separation, the noise reduction is to the injury of human body.
The invention has the following beneficial effects:
1. the invention relates to an explosion-proof type civil air defense door, which is provided with a first buffer cavity, a first buffer cylinder, an air passage, a buffer plug and a second buffer cavity, wherein firstly, a steel plate at the first buffer cavity is sunken to release force for explosion impact force, then, gas in the first buffer cavity is compressed to enter the air passage in the buffer cylinder, the buffer plug in the buffer cylinder moves under the pressure action of the gas in the air passage, the moving buffer plug is subjected to friction force and ampere force in the air passage, the friction force and the ampere force do work to further reduce the energy of the gas, finally, the gas enters the second buffer cavity, and the steel plate corresponding to the second buffer cavity protrudes outwards to release force for the impact force, so that the impact force generated by explosion is greatly reduced, and the explosion-proof effect of the civil air defense door is achieved.
2. The invention relates to an explosion-proof type civil air defense door, which is provided with a rubber ring and a pipeline, wherein firstly, a corresponding steel plate of a first buffer cavity is sunken under the impact of explosion, the air pressure in the first buffer cavity is increased, gas in the first buffer cavity enters a second buffer cavity after being buffered by a buffer cylinder so as to increase the air pressure in the second buffer cavity, meanwhile, the gas in the first buffer cavity and the second buffer cavity enters the hollow part of the rubber ring through the pipeline, the rubber ring expands to achieve the sealing effect, then, a check valve arranged in the pipeline enables the rubber ring to keep the expanded state so as to keep the sealing between a door body and a door frame, and finally, when the rubber ring is broken due to long-time flame firing, expandable graphite added in the rubber ring material rapidly expands under the action of high temperature, so that the sealing effect between the door body and the door frame is ensured when explosion and fire happen, and harmful gas is effectively prevented from penetrating through the explosion-proof civil air defense door.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 2 at C;
in the figure: the door comprises a door body 1, a steel plate 11, a door seal groove 12, a rubber ring 13, a pipeline 14, a cavity 15, a door frame 2, a first buffer cavity 3, a second buffer cavity 4, a buffer cylinder 5, an air passage 6, a straight air passage 61, a spherical air passage 62, a sliding rod 7, a baffle plate 71 and a buffer plug 8.
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.
As shown in fig. 1 to 4, the explosion-proof type civil air defense door of the invention comprises a door body 1 and a door frame 2; the door frame 2 is fixedly arranged on a wall body; the door body 1 is arranged inside the door frame 2 and is rotatably connected with the door frame 2; the door body 1 is of a steel structure wrapped by a steel plate 11; a first buffer cavity 3 and a second buffer cavity 4 are fixedly arranged in the door body 1; the first buffer cavity 3 and the second buffer cavity 4 are symmetrically distributed in the door body 1; a cavity 15 is formed between the first buffer cavity 3 and the second buffer cavity 4; the thickness of the steel plate 11 at the corresponding area of the cavity 15 is smaller than that of the rest positions; the buffer cylinder 5 is fixedly arranged in the cavity 15; the buffer cylinders 5 are uniformly distributed in the cavity 15; one end of the buffer cylinder 5 is fixed on the side wall of the buffer cavity I3 positioned in the cavity 15; the other end of the buffer cylinder 5 is fixed on the side wall of the buffer cavity II 4 in the cavity 15; an air passage 6 is formed in the buffer cylinder 5; the first buffer cavity 3 is communicated with the second buffer cavity 4 through an air passage 6;
when the explosion-proof door works, the rotating door body 1 and the door frame 2 form a closed state, when the left side of the door body shown in figure 1 explodes, the door body is impacted by explosion, because the steel plate 11 is thinner at the first buffer cavity 3, the steel plate 11 at the first buffer cavity 3 is influenced by the explosion impact to generate a depression, and further a force release effect is generated on the impact force of the explosion, the acting force of the impact force generated by the explosion on the peripheral frame of the door body 1 is reduced, the deformation or the fragmentation of the main body frame of the door body 1 is avoided, meanwhile, the gas in the first buffer cavity 3 is compressed, the gas pressure in the first buffer cavity 3 is rapidly increased, the air in the first buffer cavity 3 enters the air passage 6 in the buffer cylinder 5, the gas receives the friction force of the inner wall of the air passage 6 when passing through the air passage 6, the flow rate and the impact force of the gas are reduced, the impact force generated by the explosion is influenced on the explosion-proof door, and the gas enters the second buffer cavity 4 after passing through the air passage 6, because the inside atmospheric pressure of two 4 buffer chambers is greater than outside atmospheric pressure to 11 thicknesses of the steel sheet that two 4 departments of buffer chambers correspond are thinner, and 11 the steel sheets that two 4 buffer chambers correspond produce protrudingly, further carry out the discharge of force to the impact force of explosion, and alleviate 1 internal pressure of the door body, guarantee the explosion-proof effect of people's air defense door.
As an embodiment of the present invention, the air passage 6 includes a straight air passage 61 and a spherical air passage 62; the straight air passages 61 in the air passages 6 are alternately communicated with the spherical air passages 62, and the two ends of the air passages 6 are the straight air passages 61; the radius of the spherical air passage 62 is larger than that of the straight air passage 61, and the length of the spherical air passage 62 is larger than that of the straight air passage 61; a sliding rod 7 is fixedly arranged in the cavity 15; one end of the sliding rod 7 is fixedly arranged on the side wall of the cavity 15 close to the first buffer cavity 3; the other end of the sliding rod 7 is fixedly arranged on the side wall of the cavity 15 close to the buffer cavity II 4; the central axis of the sliding rod 7 is superposed with the central axis of the straight air channel 61; two ends of the sliding rod 7 are fixedly provided with baffle plates 71; the baffle 71 is arranged inside the spherical air passage 62 and close to the straight air passage 61; a buffer plug 8 is arranged on the sliding rod 7 in a sliding manner; the buffer plug 8 is cylindrical, and the central axis of the buffer plug 8 is superposed with the central axis of the sliding rod 7; the length of the buffer plug 8 is less than that of the straight air channel 61; the radius of the buffer plug 8 is equal to that of the straight air channel 61, and friction is generated between the buffer plug 8 and the inner wall of the straight air channel 61;
during operation, the gaseous air pressure that gets into in the air flue 6 in the buffer cylinder 5 in the cushion chamber one 3, and simultaneously, 8 left sides atmospheric pressure of buffering stopper is greater than right side atmospheric pressure, buffering stopper 8 slides right on slide bar 7 under the atmospheric pressure effect, sliding friction takes place with straight air flue 61 inner wall when buffering stopper slides and gets into straight air flue 61, the energy of gaseous in the cushion chamber one 3 changes into internal energy through the friction, further weaken the impact force that the explosion produced, buffering stopper 8 is when spherical air flue 62, gaseous direct entering cushion chamber two 4 through the clearance of buffering stopper 8 with spherical air flue 62, reduce the atmospheric pressure in the cushion chamber one 3 fast, prevent that the too big cavity that leads to of cushion chamber one 3 internal pressure from bursting, and simultaneously, gaseous frictional resistance who receives spherical air flue 62 inner wall when passing through spherical air flue 62, further reduce gaseous energy, reduce the impact that causes the main frame of the door body 1.
In one embodiment of the present invention, the surface material of the buffer plug 8 is polytetrafluoroethylene; a strong magnetic block is embedded in the buffer plug 8; the strong magnetic block is cylindrical, and two magnetic poles are arranged at two ends of the cylinder;
during operation, under the pressure effect of gas, buffering stopper 8 slides on slide bar 7, when passing through straight gas way 61, buffering stopper 8 and straight gas way 61 inner wall produce the friction, simultaneously, the polytetrafluoroethylene material on buffering stopper 8 surface guarantees that buffering stopper 8 and straight gas way 61 inner wall produce sliding friction, prevent that the too big buffering stopper 8 that leads to of frictional force from blockking up straight gas way 61, and simultaneously, when buffering stopper 8 slides in gas way 6, the steel body cutting of buffer 5 lateral walls buffers the inside magnetic induction line of strong magnet of stopper 8, produce induced-current in the 5 lateral wall steel bodies of buffer 5, according to lenz law, buffering stopper 8 receives the ampere force opposite with 8 direction of motion of buffering stopper, further carry out the power of letting out to the burst impact force, and simultaneously, the ampere force further consumes the energy that the explosion produced, reduce the impact that the explosion caused the main frame to the door body 1.
As an embodiment of the present invention, a door seal groove 12 is formed on a side surface of the door body 1 contacting with the door frame 2; a rubber ring 13 is fixedly arranged in the door seal groove 12; the surface of the rubber ring 13 is attached to the surface of the door seal groove 12; the rubber ring 13 is hollow; the first buffer cavity 3 and the second buffer cavity 4 are both fixedly connected with a pipeline 14; the other end of the pipeline 14 is fixedly connected to the rubber ring 13; the space in the rubber ring 13 is communicated with the pipeline 14; a check valve is fixedly arranged in the pipeline 14;
during operation, under the action of the sunken extrusion of the steel plate 11, the internal air pressure of the first buffer cavity 3 is greater than the internal air pressure of the rubber ring 13, the internal air pressure of the first buffer cavity 3 enters the space in the rubber ring 13 through the pipeline 14, the internal air pressure of the rubber ring 13 is greater than the external atmospheric pressure, the rubber ring 13 expands, the expanded rubber ring 13 is tightly attached to the door frame 2 to achieve the sealing effect and separate harmful gases, meanwhile, the gas in the first buffer cavity 3 enters the second buffer cavity 4 through the air passage 6, the internal air pressure of the second buffer cavity 4 is greater than the internal air pressure of the rubber ring 13, the gas in the second buffer cavity 4 enters the space in the rubber ring 13 through the pipeline 14 to further increase the internal air pressure of the rubber ring 13 and increase the expansion of the rubber ring 13, thereby enhancing the sealing effect of the rubber ring on the door body 1 and the door frame 2, and ensuring that when the door body 1 slightly deforms due to the explosion impact, the good sealing between the door body 1 and the door frame 2 is kept, the harmful gas that prevents the explosion production passes through the gap and gets into the opposite side, guarantees the safeguard effect of people's air defense door, and simultaneously, the setting that pipeline 14 stops the check valve has guaranteed that 13 inside atmospheric pressure of rubber circle keeps at the maximum atmospheric pressure state, and rubber circle 13 is in best encapsulated situation always when guaranteeing to explode, prevents that harmful gas from revealing.
In one embodiment of the present invention, an inorganic flame retardant is added to the rubber ring 13; expandable graphite is added into the rubber ring 13; the proportion of the expandable graphite in the rubber ring 13 is 40-45 wt%;
the during operation, the explosion produces a large amount of heats and is accompanied with the conflagration, rubber circle 13 receives the firing, the addition of inorganic fire retardant in the rubber circle 13 material, slow down the damage speed of rubber circle 13 under the flame firing, guarantee the sealing effect of rubber circle 13, rubber circle 13 material main part is rubber, guarantee good toughness, prevent to break when rubber circle 13 inflates the inflation, and simultaneously, high temperature arouses the expandable graphite in the rubber circle 13 material to take place the inflation, the sealing effect of reinforcing rubber circle 13, and simultaneously, rubber circle 13 receives long-time strong firing and leads to when breaking, the addition of expandable graphite still enables rubber circle 13 inflation, guarantee the sealing effect of rubber circle 13, prevent harmful gas's invasion, guarantee the protective effect of people's air defense door.
In one embodiment of the present invention, the space in the cavity 15 is filled with fireproof soundproof cotton;
the during operation, the explosion produces violent heat and sound, and the thermal-insulated effect of fire prevention of the setting reinforcing door body 1 of fire prevention soundproof cotton in the cavity 15 reduces the range of rise of people's air defense door opposite side temperature, and simultaneously, the sound of fire prevention soundproof cotton separation, the noise reduction is to the injury of human body.
The specific working process is as follows:
when the door works, the rotating door body 1 and the door frame 2 form a closed state, when the left side of the door body shown in figure 1 explodes, the door body is impacted by explosion, because the steel plate 11 is thinner at the first buffer cavity 3, the steel plate 11 at the first buffer cavity 3 is influenced by the explosion impact to generate depression, meanwhile, the gas inside the first buffer cavity 3 is compressed, the gas pressure inside the first buffer cavity 3 is rapidly increased, the air in the first buffer cavity 3 enters the gas channel 6 in the buffer cylinder 5, after the gas is acted by the friction force of the inner wall of the gas channel 6 in the gas channel 6, the impact force and the flow rate of the gas are reduced, the gas enters the second buffer cavity 4 after passing through the gas channel 6, because the gas pressure inside the second buffer cavity 4 is greater than the external atmospheric pressure, the thickness of the steel plate 11 corresponding to the second buffer cavity 4 is thinner, the steel plate 11 corresponding to the second buffer cavity 4 generates bulge, the gas in the first buffer cavity 3 enters the gas channel 6 in the buffer cylinder 5, meanwhile, the air pressure at the left side of the buffer plug 8 is larger than the air pressure at the right side, the buffer plug 8 slides rightwards on the sliding rod 7, the buffer plug generates sliding friction with the inner wall of the straight air channel 61 when sliding into the straight air channel 61, when the buffer plug 8 passes through the spherical air channel 62, the air directly enters the buffer cavity II 4 through the gap between the buffer plug 8 and the spherical air channel 62, meanwhile, under the pressure action of the air, the buffer plug 8 slides on the sliding rod 7, when passing through the straight air channel 61, the buffer plug 8 generates friction with the inner wall of the straight air channel 61, the polytetrafluoroethylene material on the surface of the buffer plug 8 ensures that the buffer plug 8 generates sliding friction with the inner wall of the straight air channel 61, meanwhile, when the buffer plug 8 slides in the air channel 6, the steel body on the side wall of the buffer cylinder 5 cuts the magnetic induction line of the strong magnetic block inside the buffer plug 8, the buffer plug generates an ampere force opposite to the movement direction of the buffer plug 8, and simultaneously, under the action of sunken extrusion of the steel plate 11, the air pressure in the first buffer cavity 3 is greater than the air pressure in the rubber ring 13, the air in the first buffer cavity 3 enters the space in the rubber ring 13 through the pipeline 14, the air pressure in the rubber ring 13 is greater than the external atmospheric pressure, the rubber ring 13 expands, the expanded rubber ring 13 is tightly attached to the door frame 2, the air in the first buffer cavity 3 enters the second buffer cavity 4 through the air passage 6, the air pressure in the second buffer cavity 4 is greater than the air pressure in the rubber ring 13, the air in the second buffer cavity 4 enters the space in the rubber ring 13 through the pipeline 14, the expansion of the rubber ring 13 is increased, meanwhile, the arrangement of the return valve in the pipeline 14 ensures that the air pressure in the rubber ring 13 is kept in the maximum air pressure state, meanwhile, a large amount of heat is generated by explosion and accompanied by fire, the rubber ring 13 is burned, the addition of an inorganic flame retardant in the material of the rubber ring 13 slows down the damage speed of the rubber ring 13 under the flame, the main body of the rubber ring 13 is rubber, guarantee good toughness, the high temperature arouses the expandable graphite in the rubber circle 13 material to take place the inflation, and simultaneously, when the rubber circle received long-time strong firing to lead to breaking, expandable graphite's interpolation still enables rubber circle 13 inflation, and the explosion produces violent heat and sound, and the thermal-insulated effect of the fire prevention of the door body 1 is strengthened in setting up of fire prevention soundproof cotton in the cavity 15, simultaneously, the separation sound of fire prevention soundproof cotton.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides an explosion-proof formula people's air defense door which characterized in that: comprises a door body (1) and a door frame (2); the door frame (2) is fixedly arranged on a wall body; the door body (1) is arranged inside the door frame (2) and is rotationally connected with the door frame (2); the door body (1) is of a steel structure wrapped by a steel plate (11); a first buffer cavity (3) and a second buffer cavity (4) are fixedly arranged in the door body (1); the first buffer cavity (3) and the second buffer cavity (4) are symmetrically distributed in the door body (1); a cavity (15) is arranged between the first buffer cavity (3) and the second buffer cavity (4); the thickness of the steel plate (11) at the corresponding area of the cavity (15) is smaller than that of the rest positions; a buffer cylinder (5) is fixedly arranged in the cavity (15); the buffer cylinders (5) are uniformly distributed in the cavity (15); one end of the buffer cylinder (5) is fixed on the side wall of the buffer cavity I (3) in the cavity (15); the other end of the buffer cylinder (5) is fixed on the side wall of the buffer cavity II (4) in the cavity (15); an air passage (6) is formed in the buffer cylinder (5); the first buffer cavity (3) is communicated with the second buffer cavity (4) through an air passage (6).
2. An explosion proof type people's air defense door according to claim 1, characterized in that: the air passage (6) comprises a straight air passage (61) and a spherical air passage (62); the straight air passages (61) in the air passages (6) are alternately communicated with the spherical air passages (62), and the two ends of the air passages (6) are the straight air passages (61); the radius of the spherical air passage (62) is larger than that of the straight air passage (61), and the length of the spherical air passage (62) is larger than that of the straight air passage (61); a sliding rod (7) is fixedly arranged in the cavity (15); one end of the sliding rod (7) is fixedly arranged on the side wall of the cavity (15) close to the buffer cavity I (3); the other end of the sliding rod (7) is fixedly arranged on the side wall of the cavity (15) close to the second buffer cavity (4); the central axis of the sliding rod (7) is superposed with the central axis of the straight air channel (61); two ends of the sliding rod (7) are fixedly provided with baffle plates (71); the baffle (71) is arranged inside the spherical air passage (62) and close to the straight air passage (61); a buffer plug (8) is arranged on the sliding rod (7) in a sliding way; the buffer plug (8) is cylindrical, and the central axis of the buffer plug (8) is superposed with the central axis of the sliding rod (7); the length of the buffer plug (8) is smaller than that of the straight air channel (61); the radius of the buffer plug (8) is equal to that of the straight air channel (61), and friction is generated between the buffer plug (8) and the inner wall of the straight air channel (61).
3. An explosion proof type people's air defense door according to claim 2, characterized in that: the surface material of the buffer plug (8) is polytetrafluoroethylene; a strong magnetic block is embedded in the buffer plug (8); the strong magnetic block is cylindrical and two magnetic poles are arranged at two ends of the cylinder.
4. An explosion proof type people's air defense door according to claim 1, characterized in that: a door seal groove (12) is formed in the side face, in contact with the door frame (2), of the door body (1); a rubber ring (13) is fixedly arranged in the door seal groove (12); the rubber ring (13) is not contacted with the door frame (2); the rubber ring (13) is hollow; the first buffer cavity (3) and the second buffer cavity (4) are both fixedly connected with pipelines (14); the other end of the pipeline (14) is fixedly connected to the rubber ring (13); the space in the rubber ring (13) is communicated with the pipeline (14); and a check valve is fixedly arranged in the pipeline (14).
5. An explosion proof type people's air defense door according to claim 3, characterized in that: an inorganic flame retardant is added into the rubber ring (13); expandable graphite is added into the rubber ring (13); the proportion of the expandable graphite in the rubber ring (13) is 40-45 wt%.
6. An explosion proof type people's air defense door according to claim 1, characterized in that: fireproof soundproof cotton is filled in the gap in the cavity (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110451500.7A CN113250593A (en) | 2021-04-26 | 2021-04-26 | Explosion-proof people's air defense door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110451500.7A CN113250593A (en) | 2021-04-26 | 2021-04-26 | Explosion-proof people's air defense door |
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| CN113250593A true CN113250593A (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110451500.7A Pending CN113250593A (en) | 2021-04-26 | 2021-04-26 | Explosion-proof people's air defense door |
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| GB8503134D0 (en) * | 1984-02-11 | 1985-03-13 | Chubb Security Projects | Security barrier structure |
| CN205245913U (en) * | 2015-12-24 | 2016-05-18 | 山西大同大学 | Hierarchical expand tube formula buffering dust fall blanking plug of porthole |
| CN109027092A (en) * | 2018-11-02 | 2018-12-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of free-piston of air damping buffering |
| CN109723333A (en) * | 2018-12-01 | 2019-05-07 | 上海海钊民防设备有限公司 | A kind of double-open type closed guard gate |
| CN210508908U (en) * | 2019-07-23 | 2020-05-12 | 青岛元大人防工程防护设备有限公司 | Explosion-proof door plant for people's air defense door |
| CN210530656U (en) * | 2019-03-20 | 2020-05-15 | 江苏华铭人防设备有限公司 | Explosion-proof door for civil air defense |
| CN112412300A (en) * | 2020-11-27 | 2021-02-26 | 向兴云 | Fire door capable of resisting shock waves |
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2021
- 2021-04-26 CN CN202110451500.7A patent/CN113250593A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8503134D0 (en) * | 1984-02-11 | 1985-03-13 | Chubb Security Projects | Security barrier structure |
| CN205245913U (en) * | 2015-12-24 | 2016-05-18 | 山西大同大学 | Hierarchical expand tube formula buffering dust fall blanking plug of porthole |
| CN109027092A (en) * | 2018-11-02 | 2018-12-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of free-piston of air damping buffering |
| CN109723333A (en) * | 2018-12-01 | 2019-05-07 | 上海海钊民防设备有限公司 | A kind of double-open type closed guard gate |
| CN210530656U (en) * | 2019-03-20 | 2020-05-15 | 江苏华铭人防设备有限公司 | Explosion-proof door for civil air defense |
| CN210508908U (en) * | 2019-07-23 | 2020-05-12 | 青岛元大人防工程防护设备有限公司 | Explosion-proof door plant for people's air defense door |
| CN112412300A (en) * | 2020-11-27 | 2021-02-26 | 向兴云 | Fire door capable of resisting shock waves |
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