563 results about "Fire protection engineering" patented technology

The invention relates to the technical field of fire-fighting engineering, and discloses a real-time fireproof monitoring data transmission system for fire-fighting engineering construction, which comprises a fire parameter analysis module, an environmental data analysis module, a fire source positioning module, a model construction module and a safety database. The fire parameter analysis module generates a temperature change record table through gridding temperature measurement nodes, estimates the smoke diffusion rate, and evaluates the thermal stress and deformation risk of the building structure; the environment data analysis module associates the air velocity with the smoke diffusion rate and corrects the parameter weight of the evaluation model; the fire source positioning module generates a fire source three-dimensional positioning map by using multispectral imaging equipment; the model construction module constructs a dynamic fire assessment model according to multi-dimensional data and outputs a comprehensive threat level; the security database stores building material parameters, historical case characteristics, and dynamic threshold rules. According to the system, through multi-module cooperation and multi-data fusion, the accuracy and timeliness of fire-fighting monitoring are improved, and the system is suitable for safety management of fire-fighting engineering.

The invention discloses a fire alarm linkage system for fire engineering based on the Internet of Things. The operation process of the system specifically comprises the following steps: generating a dynamic risk probability distribution diagram based on a building three-dimensional point cloud model and multi-source data, and deploying a differential sensor array; environment multi-physical field parameters are collected in real time through a differential sensor array, and a multi-mode fire behavior sensing signal set is generated; building a fire situation credibility map: calling a multi-criterion decision module to calculate a linkage equipment weight distribution matrix based on the fire situation credibility map, and generating a multi-stage linkage control instruction set in combination with the building topological structure model and the personnel distribution thermodynamic diagram; and performing multi-cross-system cooperative execution and closed-loop optimization. The method has the following advantages and effects that the inherent limitation of a traditional system can be broken through by constructing an intelligent prevention and control framework combining risk quantification, situation deduction and decision closed loop, the personnel evacuation efficiency is effectively improved, and damage caused by major accidents such as detonation is reduced.

The invention discloses a fire-fighting non-destructive detection method based on multi-modal detection, and relates to the technical field of fire-fighting engineering, and the method comprises the following steps: carrying out the rapid scanning of fire-fighting equipment through an ultrasonic array, analyzing and positioning a suspected defect region based on a time domain reflection signal, and generating a three-dimensional coordinate mapping model; and performing multi-angle X-ray projection acquisition on the positioning area, and generating an internal structure cross-sectional image through a three-dimensional reconstruction algorithm. According to the fire-fighting non-destructive detection method provided by the invention, by integrating various technical means such as ultrasonic array scanning, X-ray tomography, thermal imaging analysis and microwave sealing detection, comprehensive and accurate identification of potential defects of fire-fighting equipment is realized, and the dimensionality and precision of defect detection are improved; the structural integrity of the equipment is kept to the maximum extent, extra risks caused by destructive detection are avoided, and the reliability and accuracy of detection are improved through a data fusion algorithm.

The invention relates to the technical field of integrated control devices, in particular to a fire engineering power system integrated control device which comprises a fixed bottom frame, an integrated control cabinet is fixedly connected to the top end of the fixed bottom frame, and an integrated control unit is fixedly connected to the interior of the integrated control cabinet. A cabinet door is rotationally connected to the outer wall of the integrated control cabinet body, a touch panel is connected to the outer wall of the cabinet door in an embedded mode, the touch panel is electrically connected with the integrated control unit, and air exhaust and dust removal mechanisms are arranged at the two ends of the integrated control cabinet body correspondingly. The air exhaust fan can be driven to exhaust hot air in the integrated control cabinet body to the outside for ventilation and heat dissipation, meanwhile, after the heat dissipation effect of the air exhaust fan is reduced and the temperature continuously rises, cold air is generated and cold air cooling is carried out in a saltpeter ice making mode, so that the temperature of the integrated control cabinet body is rapidly reduced, and stable work of the integrated control unit is guaranteed.

The invention discloses a tunnel fire data generation method based on a generative adversarial network, and belongs to the crossing field of civil engineering disaster prevention and reduction, fire protection engineering and artificial intelligence. A generative adversarial network architecture is designed, a bidirectional LSTM network module and Wasserstein distance loss are introduced, and measuring point temperatures, flue gas concentrations and flow velocity data under different fire source positions, powers and longitudinal jet fan wind speeds in a tunnel are collected for network training. Wherein the bidirectional LSTM can help the network to better capture the time sequence information of the data, and the Wasserstein loss can enable the gradient change of the network to be smoother, so that the mode collapse phenomenon is reduced, and the network training stability is improved. Compared with a traditional data expansion means, the method can accurately and quickly generate tunnel fire data under different working conditions, avoids tedious and time-consuming numerical simulation work, and realizes efficient and high-precision expansion of the tunnel fire database.

The utility model relates to the field of fire-fighting engineering, and discloses a combinable smoke exhaust pipeline structure for fire-fighting engineering, which comprises a smoke pipe and a hoop, the smoke pipe is a sectional pipeline, the hoop is sleeved at a smoke pipe connecting port, the hoop is fixedly connected with a hanging bracket, a slot is arranged on the outer wall of the hoop, and the hanging bracket is fixedly connected with the smoke pipe connecting port. And combined section steel is welded to the top end and the bottom end of the outer wall of the smoke pipe. According to the combinable smoke exhaust pipeline structure for the fire engineering, the hoops are arranged, the pipelines are combined and installed in a segmented connection mode, the pipe opening of each section of smoke pipe is aligned with the hoops to be inserted into the hoops, the combined steel on the outer walls of the smoke pipes can be inserted into the limiting steel on the inner walls of the hoops from the inserting grooves in the hoops and embedded into the limiting steel on the inner walls of the hoops, and transverse clamping is formed to prevent the smoke pipes from shaking during installation; and then connecting bolts are driven in to connect the combined section steel with the limiting steel, so that through tight connection with the hoop, the connection stability is improved, the smoke pipes can be combined and installed according to the requirements of the number and the length to form a long-distance smoke exhaust pipeline, and the problem that connection is affected by disassembly and assembly is solved.

The invention discloses a hydraulic lifter for a fire-fighting pipeline, and relates to the technical field of fire-fighting engineering equipment.The hydraulic lifter comprises a hydraulic lifter body of a rectangular frame structure, and the outer wall of the bottom end of one side of the hydraulic lifter body is fixedly connected with a lifting cabin used for bearing a lifted object; the outer wall of the side, close to the lifting cabin, of the hydraulic lifting device body is rotationally connected with a clamping ring used for clamping and locking a load structure, balance reset mechanisms are arranged on the outer sides of the inner walls of two clamping vertical plates, an inclined buffering mechanism is arranged on the inner wall of the lifting cabin, and an abrasion-resistant coating mechanism is arranged at the center of the outer wall of the clamping ring. The first clamping block and the second clamping block are matched with each other, the balance reset mechanism can ensure that a pipeline placed on the hydraulic lifting device body is kept balanced, left-right skewing is avoided, meanwhile, the pipeline can be kept in a horizontal state, and the installation stability is ensured; and secondly, the balance reset mechanism can prevent the pipeline from inclining in the movement process of the balance reset mechanism.

The utility model discloses a water belt winding device for fire engineering, which belongs to the technical field of winding devices and comprises a base, two sliding plates are slidably mounted at the top end of the base, supporting frames are fixedly mounted on the sides, close to each other, of the two sliding plates, and two moving square blocks are slidably mounted in the two supporting frames. Sliding rods are rotatably mounted on one side of the moving square block, the same rotating rod is slidably mounted on the outer sides of every two adjacent sliding rods, a connecting block is fixedly mounted on one side of each rotating rod, sliding grooves matched with the connecting blocks are formed in the rotating rods and one sides of the sliding rods, and second springs are fixedly mounted in the sliding grooves. Automatic winding of the water hose is achieved through driving of the motor, the physical burden of firefighters is greatly relieved, the working efficiency is improved, the water hose winding device can adapt to water hoses with different widths and thicknesses through cooperation of the width adjusting assembly and the transmission extrusion assembly, efficient and stable winding operation is achieved, residual water in the water hose is discharged, and the water hose winding device is convenient to use. The service life of the water hose is prolonged.

The invention relates to the technical field of fire-fighting engineering operation and maintenance, in particular to a fire-fighting equipment engineering maintenance method and system based on digital twinning. Performing data processing on the collected state data to obtain real-time state data of each fire-fighting device; synchronizing real-time state data of each fire-fighting device to the initial state digital twin model through a data interface to realize model state updating, and obtaining a real-time state digital twin model of the fire-fighting device project; comparing the initial state digital twinborn model with a real-time state digital twinborn model, and judging the performance state of each piece of fire-fighting equipment in the fire-fighting engineering area at a preset time node; and generating equipment maintenance early warning information according to the performance state of each fire-fighting equipment in the fire-fighting engineering area at the preset time node. According to the invention, efficient maintenance of fire-fighting equipment engineering is realized through a digital twinning technology, and the risk of fire-fighting equipment failure can be effectively reduced.

The invention discloses a method and device for evaluating the operation health degree of an automatic fire alarm system, and relates to the technical field of fire engineering. In the method, a server obtains real-time operation state event data, historical maintenance data and historical repair data of each device of the automatic fire alarm system, obtains a standardized data set through screening, preprocessing and supplementing device attribute information, and inputs the standardized data set into a preset evaluation model to calculate a health degree quantitative value of each device. Sequentially calculating a loop health degree evaluation value, a host health degree evaluation value and a state level; and finally calculating an overall health degree evaluation value of the system. By implementing the technical scheme provided by the invention, comprehensive, dynamic and quantitative evaluation of the health state of the automatic fire alarm system is realized, and the accuracy and efficiency of system operation and maintenance are remarkably improved.

The utility model relates to the technical field of fire-fighting pipelines, in particular to a fire-fighting pipeline positioning structure for building fire-fighting engineering. The pipeline comprises a fixing plate, a first pipeline body, an adjusting structure and an auxiliary structure, the first pipeline body is provided with a second pipeline body through the auxiliary structure, the lower surface of the fixing plate is provided with the adjusting structure, the adjusting structure comprises a positioning plate, and the positioning plate is fixedly connected with the fixing plate. A limiting groove is formed in the lower surface of the positioning plate, two sliding blocks are slidably connected to the inner wall of the limiting groove, connecting columns are fixedly connected to the lower surfaces of the two sliding blocks, and limiting frames are fixedly connected to the lower surfaces of the connecting columns. The problems that due to the fact that the installation position of the fire-fighting pipeline is high, the installation position is generally deviated, the fire-fighting pipeline needs to be detached and installed again, physical strength of workers is wasted, and the installation efficiency of the fire-fighting pipeline is greatly reduced are solved.

The utility model discloses a fire-fighting engineering smoke exhausting and ventilating device, which relates to the technical field of fire-fighting facilities and comprises a case, a fan is fixedly connected to the lower inner wall of the case, an air inlet pipe is fixedly connected to one side of the fan, an auxiliary air pipe is fixedly connected to the other end of the air inlet pipe, and the auxiliary air pipe is fixedly connected to the other side of the fan. A main air pipe is fixedly connected to the end, opposite to the air inlet pipe, of the auxiliary air pipe, a filter screen is arranged on the inner surface of the main air pipe, a scraping rod is arranged on the outer surface of the filter screen, the top end of the scraping rod penetrates through the main air pipe and is fixedly connected with a connecting rod, and two fixing blocks are fixedly connected to the top of the outer surface of the connecting rod; a motor is fixedly connected to the top end of the machine box, a gear is fixedly connected to the output end of the motor, gear teeth are connected to the outer surface of the gear in a meshed mode, and a circulating frame is fixedly connected to one end of the gear teeth; the smoke exhausting and ventilating device for the fire engineering can effectively remove dust and cool the device when the device works.

The utility model discloses a fire-fighting pipeline fixer for fire-fighting engineering, which comprises a hanging bracket, a pipe clamp is arranged at the bottom of the hanging bracket, a quick-mounting structure is arranged between the hanging bracket and the pipe clamp, the quick-mounting structure comprises positioning insertion holes, a shifting piece and a clamping groove, the positioning insertion holes are symmetrically arranged on two sides of the bottom of the hanging bracket, and the shifting piece is arranged in the clamping groove. The two ends of the pipe clamp are inserted into the two positioning insertion holes respectively, the shifting piece is arranged at the bottom of the hanging bracket and located on one side of the positioning insertion holes, supports are symmetrically fixed to the bottom of the hanging bracket, the shifting piece is rotationally connected between the two supports, limiting parts are fixed to the positions, located on the top of the shifting piece, of the two supports, and torsional springs are installed at the rotating connecting positions of the shifting piece and the supports. The clamping grooves are evenly formed in the two sides of the pipe clamp, the hanging bracket and the pipe clamp are each of a U-shaped structure and are oppositely arranged, and the clamping grooves in the two sides of the pipe clamp are symmetrically arranged, so that rapid and efficient installation of the fire fighting pipeline is achieved, the installation steps are simplified, the use of extra tools is avoided, and the convenience of the installation process is enhanced.

The utility model provides building fire engineering detection equipment, which comprises a first supporting rod, a guide groove is arranged at the bottom of the first supporting rod, a second supporting rod is arranged in the guide groove, a rotating shaft is arranged at the top of the second supporting rod, and the rotating shaft is in sliding connection with the guide groove. An inserting shaft is arranged at the top of the second supporting rod and connected with the bottom of the first supporting rod in a clamped mode. According to the utility model, the first supporting rod and the second supporting rod which are telescopic are arranged, so that the first supporting rod and the second supporting rod push the sealing shell to be connected with the outer wall of the smoke alarm, and detection equipment can be fixed outside the smoke alarm without a ladder; then the pressing plate is pushed downwards to extrude the smoke in the tank body, so that the smoke is sprayed out, the smoke is detected by the smoke alarm, an alarm is given out, and whether the smoke alarm can be normally used or not is determined.

The invention discloses a pipeline detection device for fire engineering, and relates to the technical field of pipeline detection, the pipeline detection device comprises a detection table, and the surface of the detection table is provided with a pipeline limiting mechanism and a nondestructive detection mechanism; the nondestructive testing mechanism comprises two movable transverse frames, the ends, away from each other, of the two movable transverse frames are fixedly connected with longitudinal supports, and testing rods are arranged on the surfaces of the longitudinal supports in a sliding mode. The nondestructive detection mechanism and the pipeline limiting mechanism are arranged on the surface of the detection table, so that when the quality of a pipeline used in fire engineering is detected, an ultrasonic thickness gauge probe on the surface of a detection rod can be used for carrying out ultrasonic thickness detection on the inner wall of the pipeline; meanwhile, the pipeline is driven to rotate on the surfaces of the supporting rollers under the action of a pipeline limiting mechanism, so that different positions of the inner wall of the pipeline are continuously detected, the inner wall of the pipeline is conveniently, comprehensively and fully detected, and the nondestructive detection efficiency and accuracy of the pipeline are improved.

The utility model provides a pipeline derusting and spraying mechanism for fire engineering, and relates to the field of pipeline derusting and spraying of fire engineering. The pipeline rust removal spraying mechanism for the fire engineering comprises a bottom plate, a through groove is formed in the top of the bottom plate, a third supporting plate is fixedly connected to the position, located above the through groove, of the top of the bottom plate, and a first motor is fixedly connected to the top of the third supporting plate. According to the pipeline rust removal spraying mechanism for the fire engineering, a first motor works to drive a gear to rotate, then the gear drives teeth to rotate, the teeth can drive an outer gear ring to rotate, the outer gear ring drives a cleaning brush to rotate, and then the cleaning brush conducts cleaning operation on the surface of a pipeline of the fire engineering; and the collecting box can be used for collecting the removed rust, and the device can be used for removing the rust on the surface of the pipeline of the fire engineering before spraying operation, so that the spraying effect can be better, and actual application and operation are facilitated.

The utility model relates to the technical field of smoke exhaust devices, and discloses a smoke exhaust device for fire protection engineering, which solves the problem that the existing smoke exhaust device for fire protection engineering is poor in use effect, and comprises a smoke exhaust main pipeline, and a smoke dust filtering mechanism is fixedly arranged at one end of the smoke exhaust main pipeline; a smoke exhaust main fan is fixedly arranged at the end, away from the smoke exhaust main pipeline, of the smoke dust filtering mechanism, a plurality of branch smoke exhaust fans are fixedly arranged on the two sides of the smoke exhaust main pipeline, L-shaped smoke exhaust branch pipes are fixedly arranged at one ends of the branch smoke exhaust fans, and smoke suction hoods are fixedly arranged at the ends, away from the smoke exhaust main pipeline, of the L-shaped smoke exhaust branch pipes. The L-shaped smoke exhaust branch pipe is fixedly provided with a plurality of fire-fighting branch pipes, one end of each fire-fighting branch pipe is connected with a fire-fighting system water pipe, and a spraying mechanism is arranged at the top end in the L-shaped smoke exhaust branch pipe; by means of the smoke exhaust device, cooling and fire extinguishing of the smoke exhaust pipeline can be achieved, flames are prevented from being exhausted along the smoke exhaust pipeline, safety is improved, and meanwhile smoke dust in smoke can be filtered.

The invention relates to the technical field of fire alarm, in particular to an anti-blocking fire alarm device and method for fire engineering, and the device comprises a housing, and the interior of the upper end of the housing is provided with a mounting plate and a buckle assembly; a supporting ring is fixedly connected to the middle inside the shell, a second mounting disc is fixedly connected to the upper end of the supporting ring through bolts, a power mechanism is arranged at the upper end of the second mounting disc, a reciprocating swing mechanism is arranged at the lower end of the second mounting disc, and the lower end of the reciprocating swing mechanism is located at the lower end outside the shell; a second filter screen is fixedly connected into the lower end of the shell. A cleaning brush and a fixing assembly are arranged at the lower end of the shell. The lower end of the second mounting disc is fixedly connected with a circuit board. The lower end of the circuit board is fixedly connected with a sensor and a buzzer. The upper end of the second mounting disc is fixedly connected with a storage battery. When the second filter screen is cleaned, manual cleaning is not needed, meanwhile, the passing rate of smoke is increased, and smoke particles in air can be better detected by an inductor.

The utility model relates to the technical field of fire-fighting engineering, and discloses a fire-fighting pipeline butt-joint device which comprises a base, the top of the base is slidably connected with a sliding plate, the top of the sliding plate is fixedly connected with a butt-joint plate, the right side of the butt-joint plate is provided with a butt-joint hole, and the butt-joint plate is provided with a clamping and fixing mechanism. The clamping and fixing mechanism comprises a supporting block, a supporting plate and a sliding block, and the supporting block is fixedly connected to the top of the sliding plate. According to the pipeline fixing device, the sliding plate, the butt joint plate and the clamping and fixing mechanism are used in cooperation, the supporting block and the supporting plate are used for supporting a pipeline, the sliding strip slides to drive the sliding block to slide, and therefore the sliding block drives the clamping plate to move to clamp and fix the pipeline, and pipelines of different sizes can be fixed to the butt joint plate; and butt joint of fire-fighting pipelines of different sizes is facilitated, and practicability is improved.

The utility model belongs to the technical field of fire-fighting engineering equipment, and particularly relates to a wireless fire alarm device for fire-fighting engineering, which comprises an alarm body and a mounting base, the alarm body is detachably connected with the mounting base, the alarm body comprises an alarm shell, the top of the alarm shell is provided with a connecting rod, and the connecting rod is connected with the mounting base. A control module is arranged in the alarm shell; the control module is in electric signal connection with a monitoring module, an alarm module, a communication module and a power supply module; the mounting base comprises a mounting shell and a clamping mechanism, the top of the mounting shell is connected with the wall, a cavity is formed in the mounting shell, a first opening is formed in the bottom of the mounting shell, the upper portion of the clamping mechanism is located in the cavity, and the clamping mechanism is detachably connected with the connecting rod. Through the arrangement of the detachable mounting base and the alarm body, quick disassembly and assembly can be achieved, the clamping mechanism is arranged, the disassembly and assembly process is convenient to operate, whether a fire happens or not is monitored in real time through the monitoring module, and the fire site and fire data can be grasped in time.

The utility model relates to the technical field of wall drilling devices, and discloses a wall drilling device for fire engineering, which solves the problem that the existing wall drilling device is inconvenient to collect dust, and comprises a supporting base, and a limiting supporting sleeve is arranged in the middle of one side of the top end of the supporting base. A lifting supporting arm is slidably inserted into the top end of the limiting supporting sleeve in a penetrating mode, the lifting supporting arm is connected with the supporting base through a hydraulic telescopic rod, a wall drilling mechanism is arranged at the top end of the lifting supporting arm and sleeved with a dust collection mechanism, and the wall drilling mechanism is composed of a movable supporting base, a driving motor, a rotating shaft and a drill bit. The movable supporting seat is connected to the top end of the lifting supporting arm, the driving motor is inserted into the movable supporting seat, the rotating shaft is fixedly connected to an output shaft of the driving motor, and the drill bit is connected to the end, away from the driving motor, of the rotating shaft. By means of the wall drilling device, drilling operation can be conducted on walls of different heights, dust collection can be achieved, and dust diffusion is avoided.

The invention discloses a water supply method and system for a high-rise building fire, and relates to the related field of fire-fighting engineering.The method comprises the steps that a target high-rise building is divided into a plurality of fire-fighting subareas according to a fire-fighting water supply mode; obtaining a target disaster situation fire-fighting zone where a fire occurs; acquiring the combustion area of the target disaster fire-fighting zone, and determining the target fire scene water consumption based on the combustion area; obtaining a target fire scene water supply scheme based on a fire disaster fire-fighting water supply analyzer according to the target disaster fire-fighting zone and the target fire scene water consumption; and carrying out fire-fighting pipe network water supply of the target high-rise building based on the target fire scene water supply scheme. The technical problem that an existing high-rise building fire water supply method lacks scientific basis and accurate calculation, and consequently the water supply efficiency is not high is solved, and the technical effects that a scientific and reasonable water supply scheme is generated, and then the water supply efficiency is improved are achieved.

The utility model relates to the technical field of fire engineering, in particular to a fire hose cleaning device for fire engineering. Comprising a bottom plate, a first cleaning assembly and a second cleaning assembly, a recycling groove is formed in the bottom plate, two sets of mounting plates are mounted on the bottom plate, the two sets of mounting plates are symmetrically arranged with the center line of the bottom plate as the center, and the first cleaning assembly and the second cleaning assembly are both arranged between the two sets of mounting plates; the second cleaning assembly comprises two sets of cleaning mechanisms, and the two sets of cleaning assemblies are both mounted between the two sets of mounting plates. According to the fire hose cleaning device, through the arrangement of the second cleaning assembly, when a fire hose is cleaned, two sets of cleaning rollers are driven by two sets of motors to rotate respectively, the surface of the fire hose is cleaned through the two sets of cleaning rollers, and therefore the friction force between the cleaning rollers and the fire hose is improved, and dirt is not prone to being left on the surface of the fire hose; and the cleaning effect of the cleaning device is improved.

The invention relates to the technical field of fire protection engineering, and discloses a multifunctional experiment platform for fire extinguishing agent flow state observation and pressure testing, the multifunctional experiment platform comprises at least one liquid storage pressurization unit, a multi-section experiment pipeline unit, a flow state observation unit and a data acquisition and control device, the multi-section experiment pipeline unit comprises a nozzle and a test experiment pipe; the flow state observation unit comprises a transparent closed box body and a closed observation cavity; wherein the test experiment pipe comprises a straight pipe experiment section and / or a bent pipe experiment section and / or a reducing experiment section, the straight pipe experiment section comprises at least two straight pipes, the bent pipe experiment section comprises at least one bent pipe, and the reducing experiment section comprises at least two reducing pipes. According to the multifunctional experiment platform, the vertical layout conforms to the natural flow direction of fluid, the structure is stable, the test experiment pipe is modularly designed, the test is flexible and efficient, the whole system is visible, controllable and high in recordability, and the experiment efficiency and safety are greatly improved.

The utility model relates to the technical field of fire-fighting pipeline fixing, and discloses a pipeline fixing device for fire-fighting engineering, which comprises a pipeline fixing frame, a fixing arm is fixedly connected to the top end of the pipeline fixing frame, a fixing ring is fixedly connected to the bottom end of the fixing arm, and a connecting insertion block is fixedly connected to the joint of the fixing ring. A rectangular groove is formed in the outer wall of the fixing ring, a fixing assembly is fixedly connected to the inner wall of the fixing ring and comprises a fixing part, a lifting assembly is fixedly connected to the inner wall of the fixing arm, and a limiting assembly is fixedly connected to the right side of the fixing arm. According to the pipeline fixing device, through clamping connection of the fixing assembly, a pipeline can be rapidly and conveniently fixed, the tedious installation process is reduced, the fixing work efficiency can be improved, the lifting assembly can adjust the position of the pipeline fixing frame, the limiting assembly can fix the lifting assembly, and the adaptability and stability of the device are improved.

The utility model discloses a fire-fighting device for fire-fighting engineering, and relates to the technical field of fire-fighting devices, the fire-fighting device comprises a base and a smoke alarm, the smoke alarm is clamped on one side of the base, both sides of the middle of one end of the smoke alarm are fixedly provided with insertion rods, and the middle of one end of each insertion rod is provided with a notch. According to the utility model, when the smoke alarm is overhauled, the two pressing rods are pressed to extrude inwards, the spring shrinks, the limiting block and the limiting rod move and are separated from the notch and the chute, and the alarm can be taken down for overhauling after the limiting is cancelled; the pressing rod needs to be pressed to drive the spring to contract, the limiting block deviates to one side, the pressing rod is loosened after the inserting rod makes contact with the bottom, the spring is reset, the limiting block and the limiting rod are clamped in the sliding groove and the limiting groove respectively, and then installation can be completed, the time of a maintainer staying at a high position is shortened by simplifying the disassembling and installing process, and safety is improved.

The invention belongs to the technical field of fire-fighting engineering, and discloses a fire-fighting engineering smoke exhaust device which comprises a mounting frame, a fire-fighting pipeline connected with the mounting frame and a filter screen arranged at the end of the fire-fighting pipeline, and a plurality of mounting plates are distributed on the inner wall of the fire-fighting pipeline at equal intervals; a conical plate is arranged on the side wall, close to the filter screen, of the mounting plate, and a detection assembly used for detecting the blockage condition of the filter screen is arranged on the fire fighting pipeline. The method has the effect of reducing the difficulty of judging the service life of the filter screen by workers.

The invention provides a model selection method and device for a fire-fighting pipeline compensator, and relates to the technical field of fire-fighting engineering pipeline safety. The method comprises the following steps: establishing a pipeline fluid-structure coupling model based on a fire-fighting pipeline and an existing compensator; the static deformation quantity of an existing compensator is calculated through a pipeline fluid-structure coupling model; obtaining the pressure variation of the fire-fighting pipeline in unit time, and updating the static deformation quantity based on the pressure variation of the fire-fighting pipeline to obtain a dynamic deformation quantity; and determining the type of the compensator to be replaced according to the dynamic deformation quantity. According to the invention, accurate model selection of the compensator can be realized.

The invention discloses a monitoring and early warning device for fire protection engineering, and belongs to the technical field of fire protection monitoring and early warning, the monitoring and early warning device comprises a supporting plate, universal wheels are fixedly mounted on the lower surface of the supporting plate, a moving mechanism is fixedly mounted on the upper surface of the supporting plate, and a dismounting mechanism is fixedly mounted on the moving mechanism; the dismounting mechanism is fixedly connected with a monitoring and early warning mechanism, the monitoring and early warning mechanism is fixedly provided with a heat dissipation mechanism, through the arrangement of the heat dissipation mechanism, the purpose of heat dissipation of the monitoring and early warning mechanism is achieved, and meanwhile through the arrangement of adsorption cotton, dust in air can be adsorbed; according to the monitoring and early-warning device, dust mixed in air is prevented from entering the monitoring and early-warning mechanism together to cause damage to parts in the monitoring and early-warning mechanism, the height of the monitoring and early-warning mechanism is conveniently adjusted through the arrangement of the moving mechanism, and the trouble that most existing monitoring and early-warning mechanisms are fixed at high positions and are inconvenient to maintain is solved.

The utility model relates to fire engineering technical field especially fire engineering is with preventing deformation's heat -proof fire door, including door frame, still including door shell and door lock component, door frame one side fixedly connected with door shaft, door frame one side fixedly connected with door shaft, the material that this device adopts through door shell is steel sheet to improve the strength of door, prevent deformation, the material that fills the layer adopts is magnesium oxide to improve the heat -proof of door, through being provided with first fire -retardant expansion seal and second fire -retardant expansion seal on door frame and door shell, thereby the door gap is sealed, improves the leakproofness, can effectively block the flue gas, through first spring drive movable block in the inside slide of guide block, movable block drive toothed plate removal, toothed plate drive gear rotation, gear drive first rotation axis rotation, first rotation axis drive second connecting rod rotation, second connecting rod drive first connecting rod in the inside rotation of fixed block, thereby the door shell is automatically closed, prevents the fire, flue gas spreads.