105results about "Gasproof doors" patented technology

An airtight flood and preventive partition door used for civil defense in metro running mainly comprises a door leaf, a door frame, a hinge, a hydraulic drive device, a manual and electric locking device, a manual gate valve, a manual and electric gate valve, a support locking device, a monitoring device and the like. A hydraulic drive system drives the door leaf to open and close. The manual andelectric locking device can open and close the locks manually and electrically. The gate valve is used for sealing a drainage ditch passing by the partition door. The support locking device is used for supporting and safely locking the door leaf. A monitoring system is used for monitoring the water level and state of each component and controlling action of each component. The partition door simultaneously satisfies the requirements of civil defense and flood standards, is suitable for the characteristics of the metro running structure, occupies little space, has low overall cost, is characterized in that all the components can be used manually and electrically, can be monitored remotely and opened and closed easily and quickly, and has higher application value.

An inflatable separation device and method of using the device to form a gas-impermeable barrier in a structural location such as a hallway. The device also provides a safe, effective passage across the barrier to form a concealed region for decontamination protocols. The inflatable separation device includes an inflatable support frame and a cover that envelops the support frame and forms an enclosed interior space when the support frame is inflated. An inflatable perimeter sealing bladder is disposed about the cover and adapted to form a seal between the cover and exterior surfaces of a structural space when the support frame and the sealing bladder are inflated.

The invention relates to a protective airtight door of a coal mine refuge underground chamber. The protective airtight door comprises a door frame (1) and a door body (2), wherein the door frame (1) is strip-shaped frame with a hollow part, the strip-shaped frame can be a frame-shaped framework combined and welded by channel steel, the periphery of the framework is respectively provided with fastening strips (9) extending outwards, the fastening strips can be I-beam reinforcing ribs, the door body (2) is in a rectangular plate-like structure, the main body of the door body (2) is larger than the hollow part of the door frame (1), a bulging part extends from the main body and can extend into the hollow part of the door frame (1), and the bulging part can be in a box-type reinforcing plate structure and can be filled with a heat-insulating material. The airtight door has simple integral structure, large strength and good sealing effect and can bear the shock wave of about 1Mpa; meanwhile, an emergency escape door is arranged on the door body, thus the problem that people cannot be easy to escape when the airtight door is blocked can be avoided; and besides, an observation window is arranged on the escape door and the heat preservation effect of the door is better.

The invention discloses a control system used for a vertically rotary flood and preventive door, comprising a support locking device, a hydraulic drive device, a monitoring device and a manual and electric locking device. A hydraulic drive system drives a door leaf to open and close. The manual and electric locking device can open and close locks manually and electrically. The support locking device is used for supporting and safely locking the door leaf. The monitoring device is used for monitoring the water level and state of each component and controlling action of each component. The control system simultaneously satisfies the requirements of civil defense and flood standards, is suitable for the characteristics of the metro running structure, occupies little space, has low overall cost, is characterized in that all the components can be used manually and electrically, can be monitored remotely and opened and closed easily and quickly, and has higher application value.

The invention provides an anti-poison intelligent window, relates to a window capable of automatically opening when coal gas is in a room, and overcomes the defect that the prior gas detection device only can detect dangers, but cannot eliminate the dangers. The anti-poison intelligent window comprises a window body, a gas detection sensor, a measuring circuit, an FPGA circuit board, a stepping motor, a mechanical window opening mechanism and a No.1 pressure sensor; a signal output end of the gas detection sensor is connected with a signal input end of the measuring circuit; a signal output end of the measuring circuit is connected with a signal detection input end of the FPGA circuit board; a step-by-step impulse signal output end of the FPGA circuit board is connected with a power supply input end of the stepping motor; a motor output shaft of the stepping motor drives an opening and closing sash on the window body through the mechanical window opening mechanism; and an open stopping position corresponding to the opening and closing sash is provided with the No.1 pressure sensor, and a signal output end of the No.1 pressure sensor is connected with a signal input end of the FPGA circuit board to output a control signal for stopping the stepping motor.

A mine door system for closing a mine doorway comprises a door hinged adjacent the doorway for swinging relative to the stopping between a closed position and an open position swung outwardly away from the stopping. A keeper is mounted in fixed position relative to the doorway. The system further comprises a trigger-actuated latch mechanism including a detent engageable with the keeper for latching the door in its closed position and a trigger operably connected to the detent in a latched position. The mechanism is constructed and configured so that actuation of the trigger causes the detent to move from a latched position in which the detent engages the keeper for latching the door closed to an unlatched position in which the detent is disengaged from the keeper for allowing the door to be opened.

There is provided an airlock system utilizable with a protected Toxic Free Area (TFA) defined by an enclosure including spaced-apart first and second door arrangements, each door arrangement having an entrance and an exit and being divided by partitions into a plurality of sections, an airlock space coupled to, and bridging between, the first and second door arrangement, the exit of the second door being connectable to the protected TFA, while the first door arrangement having its entrance located outside the TFA, the arrangement being such that there is no direct airflow from the entrance of the first door arrangement to the exit of the second door arrangement. A method for facilitating entrance and egress from a Toxic Free Area (TFA) defined by an enclosure, without the danger of contamination of the protected TFA, is also provided.

The invention discloses an airtight blast door for an underground refuge chamber. The door comprises a door leaf, a door frame, a sealing structure and a locking device, wherein the door leaf comprises an arc door leaf positioned on the outer side and a flat-plate door leaf positioned on the inner side; the arc door leaf comprises an arc shell plate and a fixing plate welded on the arc shell plate; a reinforcing plate is arranged between the arc shell plate and the fixing plate; heat insulation cotton is filled between the arc shell plate and the fixing plate; the flat-plate door leaf comprises a plane cover plate; the plane cover plate is arranged on the fixing plate through a connecting seat welded on the fixing plate; and heat insulation cotton is filled between the fixing plate and the cover plate. The arc shell plate is arranged, so that the explosion shock wave bearing capacity of the door leaf can be enhanced; the heat insulation cotton is arranged, so that external high temperature can be isolated; and sealing strips are arranged on the edge of the periphery of the door leaf, and metal pressing strips and a multi-point locking mechanism are arranged on the door frame corresponding to the sealing strips, so that the air tightness of the airtight blast door is ensured, and external poisonous and harmful gas is prevented from invading.

The invention provides a movable type escape capsule emergency escape door for a mine and belongs to the technical field of escape capsule equipment for the mine. Aiming to the solve the technical problem, the invention provides the movable type escape capsule emergency escape door for the mine, which has the advantages of reliability in sealing, simplicity in operation, strong anti-knocking and anti-impacting performance and high-temperature resistance and is convenient for people in a capsule to use when the people actively go out of the capsule. The technical scheme disclosed by the invention is as follows: a circumferential edge of the door is uniformly provided with three manual locking devices and the door is mounted on the capsule body through the manual locking devices; a handle is arranged at the inner side of the door; a sealing strip is arranged on the circumference on which the door is contacted with the capsule body; and the capsule body in the door is provided with a heat-preservation and heat-insulating cover. The invention provides the emergency escape door for the mine escape capsule.

The invention discloses a multifunctional protection window comprising a rectangular window frame, an upper fence, a lower fence, a device box, a buzzer, a transmission device, a smoke proof curtain, a locking device and a controller. When a fire occurs, an owner can push a part of the lower fence out to form an accommodating chamber for people to stand with a telescopic device; the lower fence and the telescopic device are transferred to a lower end of a window through the transmission device to avoid the firing and smoking window; on the other hand, the window is blocked by the curtain installed inside the device box to prevent toxic gases flowing out and poisoning people. The multifunctional protection window is aimed to solve the problem that present anti-theft windows cannot serve as a refuge or isolate the toxic gas and there is no fire alarm device when an indoor fire occurs.

The invention relates to a compression and heat resistant gear-connected bar type sealing door. The compression and heat resistant gear-connected bar type sealing door comprises a door frame, a door body, a hand wheel shaft, a hand wheel, a driving gear, driven gears, hexagon nuts, connecting rods I, guiding grooves, connecting rods II and a hinge. The door body is of a circular structure and slightly protruded in the middle, the door frame is of a ring-shaped structure, and the door frame and the door body are used in a matched mode; notches are formed in the periphery of the door body, high temperature resistant adhesive tapes are installed in the notches, so that the airtightness of the overall device is ensured, and invasion of toxic and harmful gas is prevented. According to the compression and heat resistant gear-connected bar type sealing door, the flat ends of the connecting rods II are driven to enter the door frame through movement of a gear-connected bar mechanism; with increasing of the entered flat ends of the connecting rods II, the sealing door is locked tightly, meanwhile, the self-lock function is achieved through profile connection; and the compression and heat resistant gear-connected bar type sealing door has the obvious advantages that operation is convenient, the structure is simple, the effects of compression and heat resistance, safety and reliability are achieved, and airtightness is good.

A door assembly for a kiln that includes a door frame formed by prefabricated vertical frame members that are interconnected with prefabricated lateral frame members. Insulated panel sections are replaceably supported by the door frame. Replaceable, peripheral door seals are held in track ways. The track ways are defined by the vertical and lateral frame members. Each lateral and vertical frame member includes a plurality of T-slots for receiving threaded members that are engagable with threaded fasteners used to hold the panel sections to the door frame. The door assembly includes clamp pressure receiving structure for receiving a clamping pressure exerted by a clamp mechanism forming part of the kiln structure whereby a sealing engagement is provided between a peripheral seal on the door frame. A roller extending outwardly from the door assembly is engagable by another, passing door assembly.

A separation and containment system is provided. The separation and containment system can contain natural gasses, e.g., compressed natural gas (CNG) and liquefied natural gas (LNG), within a natural gas vehicle (NGV) service area, and separate the NGV service area from a conventional service area. The separation and containment system utilizes one or more barriers, such as industrial fabric / vinyl materials that meet various regulatory safety standards applicable to NGVs. The separation and containment system is easily constructed, dismantled, and resized / adapted in accordance with desired operating conditions.

The invention relates to a movable hard rescue capsule emergency door, which comprises a door wall plate, a door plate, a heat insulating material, a crossed latch, a fixed sleeve, a conical sleeve, a door shaft, two hand wheels, an inner lining plate, a door frame, a first limiting pin and a second limiting pin, wherein a cavity between the inner lining plate and the door plate is filled with the heat insulating material; the crossed latch is positioned outside the inner lining plate; a through hole is formed in the centers of the door plate, the inner lining plate and the heat insulating material; the fixed sleeve is welded in the through hole of the door plate; the door shaft penetrates through the conical sleeve, the crossed latch and the fixed sleeve from inside to outside of a capsule in sequence; the conical sleeve corresponds to a conical hole in the top of a nut and the sizes are the same; the two ends of the door shaft are provided with one hand wheel respectively; the door plate is provided with the first limiting pin on the inner side of the capsule; and the door wall plate is provided with the second limiting pin on the inner side of the capsule. The movable hard rescue capsule emergency door has the characteristics of better heat insulating and sealing effects and high reliability and can be widely applied to the field of mining.

A door with enhanced security includes four sides that define a side perimeter of the door. The side perimeter connects to an interior face and an exterior face of the door. An aperture is defined in the door that extends through the door between the exterior face and the interior face. A gate is connected to the door that includes a plurality of slats. The gate is selectively movable in the aperture of the door. The aperture is at least partially open in a first position of the gate and the aperture is closed in a second position of the gate. A locking mechanism secures the gate in position in the aperture of the door. A screen connects to the door and is positioned in the aperture of the door.

The invention discloses a smoke-proof door, which comprises a door body, an upper baffle plate, a lower baffle plate, a driving assembly and two adjustment assemblies; an accommodation cavity is arranged in the door body, and openings communicating with the accommodation cavity are provided at the upper and lower ends of the door body ; The driving assembly includes a driving gear, a rack plate meshed with the driving gear and a driving motor. When the driving motor drives the driving gear to rotate, the rack plate moves left and right; the adjusting assembly includes two vertically arranged screw rods and upper and lower ends Screw barrels with equal openings, the threads on the outer walls of the two screws are set in reverse, and one end of the two screws is inserted into it through the upper opening and the lower opening of the screw barrel respectively, and both screws are threadedly connected with the barrel, and the outer wall of the screw barrel A driven gear meshed with the rack plate is sleeved. Through the setting of the driving component and the adjusting component, the gap between the upper and lower ends of the door body, the door frame and the ground can be effectively closed to reduce the speed of fire smoke entering the room, thereby gaining more rescue time for residents.

A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.

The invention discloses a fire door with smoke exhaust function. The door leaf is welded to the inner frame, the inner frame is bonded to the filler, the door frame and the hinge are connected by bolts, the door closer is installed on the door leaf, the fireproof glass is embedded and connected to the door leaf, the fireproof lock is welded to the door leaf, and the smoke exhaust device Embedded and connected on the door leaf, the smoke exhaust device includes a fixed frame, a smoking plate, a filter plate, an activated carbon plate, a reaction plate, and an air outlet plate, and the smoking plate is embedded and connected on the fixed frame. The present invention is a fire door with a smoke exhaust function. The plate absorbs the smoke, and then the filter plate filters the large particle molecules in the smoke. The activated carbon plate can effectively absorb the toxic gas in the fog, and the reaction plate reacts with the smoke chemically, and then discharges the harmless gas through the gas outlet plate. .

The invention discloses a safe thermal-insulated protective door with good airtightness. The safe thermal-insulated protective door with the good airtightness comprises a door body, hand wheels, a large gear wheel, a large gear wheel shaft, a small gear wheel, a small gear wheel shaft, gear racks, extension bars, a support frame, and hinge assembles; the two hand wheels are mounted at two ends of the large gear wheel shaft; the hand wheels are connected with the large gear wheel shaft; and the large gear wheel is mounted in the middle of the large gear wheel shaft, the small gear wheel is engaged with the large gear wheel, the gear racks are engaged with the small gear wheel, the extension bars are welded to the side surfaces of the gear racks, and the support frame is fixedly mounted on the edge of the door body. According to the safe thermal-insulated protective door with the good airtightness, a plurality of the extension bars are applied to work simultaneously to achieve locking of the blast-resistant airtight door; by profile connection in a self-locking device, self-locking of the safe thermal-insulated protective door is achieved, a reliable connection in explosive blasts or drop shocks can be guaranteed, and at the same time good airtightness and thermal insulation are provided.

A door system for a doorway to a gas-tight chamber includes a door panel that selectively moves between a closed position for sealing a doorway of a chamber and an open position for permitting access to an interior of the chamber through the doorway. The door panel has an inner side generally facing the interior of the chamber when the door panel is in the closed position. A door panel track is connected to the inner side of the door panel. The door panel track selectively cooperates with an interior track of the chamber to facilitate movement of a cart between the door panel to the interior of the chamber.

The invention relates to a plastic steel refractory window. The plastic steel refractory window comprises a window frame, a fan Frame and double layer refractory glass, wherein the fan frame is arranged in the window frame, the double layer refractory glass is arranged in the fan frame, the fan frame comprises a fixing frame I and a clamping frame used for clamping the double-layer refractory glass, the fixing frame I comprises a middle frame I, a connecting frame I and a connecting frame II, the connecting frame I and the connecting frame II are located on the two sides of the middle frame Ifacing an outdoor side edge, a supporting plate I is arranged between the clamping frame and the connecting frame I, the edge of the double layer refractory glass is clamped in a U-shaped opening of the supporting plate I, a plurality of middle frame heat insulation cavities are formed in the middle frame I, supporting plates II attached to the cavity wall are arranged in the middle frame heat insulation cavities, fire-resistant expansion strips are arranged in the middle frame heat insulation cavities which are not provided with the supporting plates II, a window frame heat insulation cavityI is formed in the window frame, and a supporting part I in a square tubular structure is arranged in the window frame heat insulation cavity. The plastic steel refractory window is good in fireproofperformance, and can have a certain blocking effect on smoke.

The invention discloses a suit door capable of blocking smoke, which comprises a door frame, a door, an upper baffle, a lower baffle, a drive assembly and two adjustment assemblies; There is an installation groove, and a first sealing strip is arranged in the installation groove; the door includes a door body that can cover the blocking frame, and the front surface of the door body can be in contact with the rear end surface of the blocking frame; Gear, rack plate and driving motor, when the driving motor drives the driving gear to rotate, the rack plate then moves left and right; the adjustment assembly includes two vertically arranged screw rods and a screw barrel with openings at both upper and lower ends. In the event of a fire accident, through the setting of the blocking frame, the movable upper baffle and the lower baffle, the gap between the door body and the door frame and the ground can be effectively closed, thereby reducing the speed of fire smoke entering the room. Gain more rescue time.

A system, device and method for rapid delivery of clean air to occupants of a deployed mine refuge from a surface source after the refuge has been deployed and before the self-contained air has been consumed or before the temperature in the refuge has increased to hazardous levels in which a drilling rig is used to a borehole in close proximity to the mine refuge's underground location and a supply duct is lowered through the borehole to the underground mine near the refuge; upon hearing an alarm sounded by the system, a refuge occupant would exit the refuge, using existing personal breathing protection, to retrieve the duct and connect it to the mine refuge.

The subject of the present disclosure is a sill and opening leaf assembly for a door that is fluid-tight to a liquid or gaseous fluid and intended to seal an opening separating two spaces in a building, wherein one of the edge faces or lower edge face of the opening leaf is situated, when mounted, facing a floor surface, and a sill able to provide fluid-tightness, of the bottom part of the door concerned between the lower edge face and the floor surface. The sill includes at least one flat and elongate gasket element, of the tongue type, fixed via one of its longitudinal sides to the lower edge face and a sealing and travel groove made in the floor surface across the opening concerned and intended to house the gasket element able to collaborate in travel with one of the longitudinal edges of the groove.

The invention provides a protective sealing door. The protective sealing door comprises a door body (1) and a door frame (7), a sealing groove (2) is formed in one of the door body (1) and the door frame (7), and a sealing strip (3) is arranged on the other one of the door body and the door frame in the mode of corresponding to the sealing groove (2); a sealing part (4) is arranged in the sealinggroove (2), when sealing is not needed, the sealing part (4) is in a natural state, and a gap is reserved between the sealing part and the sealing strip (3); when sealing is needed, the sealing part is inflated, sealing is formed between the sealing part and the sealing strip (3); and the sealing part (4) is connected with an air source and a controller (5), and the controller (5) controls the airsource to inflate or deflate the sealing part (4). According to the protective sealing door, effective sealing protection property can be provided, and the protective sealing door is effectively prevented from leakage.

An automatic explosion-proof protective door comprises a first fixing base, an explosion-proof steel plate part, an upper sliding plate part, a lower sliding plate part, a second fixing base and a driving part, and is characterized in that the first fixing base and the second fixing base are fixedly connected through the two ends of the upper sliding plate part and the lower sliding plate part; wheels on the lower side of the driving part are installed in a fourth T-shaped groove of the lower sliding plate part, and a second gear on the lower side of the driving part is meshed with a rack in the fourth T-shaped groove. By arranging an explosion-proof steel plate of the explosion-proof steel plate part into a thick plate, the automatic explosion-proof protective door can be firmer, and theexplosion-proof intensity is improved; by arranging second stepping motors and explosion-proof steel plate fixing plates, the steel plate can be fixed doubly, and the firmness of the steel plate is improved; a sealing coil plate in a sealing coil storage groove is driven by the driving part to complete sealing, terrorists are prevented from injuring people inside with some toxic gases, the safetyis improved, and the personnel safety is ensured.

The invention relates to the field of laboratory hazardous chemical gas safety protection equipment, in particular to a hazardous chemical gas detection terahertz safety door and a detection method. The terahertz safety door comprises a terahertz wave transmission probe, a terahertz wave modulator, a terahertz wave receiving probe, a terahertz wave receiving processor, a central processing unit, an electronic door lock and a buzzer. The invention utilizes the characteristics that a terahertz spectrum of gas cintains rich physical and chemical information to establish a huge hazardous gas terahertz spectrum information base, and real-time comparison is carried out so as to solve the problems of insufficient induction type and low sensitivity of existing hazardous gas detection devices. The terahertz safety door provided by the invention adopts a design of combining the central processing unit with the electronic door lock and the alarm buzzer, when indoor hazardous gas exceeds the standard, the safety door controls opening of the electronic door lock at first time, the door is bounced off, so that outdoor air can enter a room to reduce the concentration of indoor hazardous gas, also ringing of the alarm buzzer is controlled at the same time to give a warn to people indoors visually, thus reducing the probability of risks.