CN214860734U - Intelligent liquid nitrogen fire prevention and extinguishing device for flammable and explosive hazardous material transport vehicle and transport vehicle - Google Patents

Abstract

The utility model provides a fire-retardant and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention device and transport vechicle belongs to fire-retardant and explosive hazardous articles haulage vehicle protection technical field, liquid nitrogen intelligence fire prevention device includes detection mechanism, liquid nitrogen mechanism and crashproof buffer gear, the apparent temperature of the detection jar body through detection mechanism and the pressure that detects the action on the jar body, judge whether carry out liquid nitrogen mechanism, liquid nitrogen mechanism can be with high-pressure state liquid nitrogen air current parcel isolation around the jar body, make the temperature descend rapidly, block the isolated burning condition of ignition, synthesize the function through liquid nitrogen mechanism and crashproof buffer gear, furthest protective tank body is not leaked in the damage under the effect of toppling in the external force offend, the transport vechicle includes vehicle body and above-mentioned liquid nitrogen intelligence fire prevention device. The utility model provides a fire extinguishing device is prevented to flammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence also can use in flammable and explosive hazardous articles static storage tank body container to prevent malignant accident and continue to enlarge harm, reduce the potential safety hazard.

Description

Intelligent liquid nitrogen fire prevention and extinguishing device for flammable and explosive hazardous material transport vehicle and transport vehicle

Technical Field

The utility model belongs to the technical field of inflammable and explosive hazardous articles vehicle protection, more specifically say, relate to an inflammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention and extinguishing device and transport vechicle.

Background

In recent years, with the rapid development of modern petroleum and chemical industries, the national demand for energy is increasing, and road transportation is used as an important transportation mode for various chemical dangerous goods and flammable and explosive goods, but traffic accidents related to flammable and explosive dangerous goods frequently occur every year. Once chemical dangerous goods and flammable and explosive transport vehicles have accident traffic accidents, the pollution of the chemicals or the serious accidents of oil leakage, fire hazard and explosion cause huge losses to the lives and properties of people, and along with the rapid increase of the scale of the special industry, the intelligent safety management of the dangerous goods transport vehicles and the research and development of upgrading the hardware equipment of the carrier are not slow.

At present, the tank bodies for loading and transporting corrosive, flammable and explosive media which are actually used and produced are basically in accordance with the standard of technical conditions for metal normal-pressure tank bodies of tank vehicles for transporting liquid dangerous goods by automobiles, and the tank bodies mostly adopt single-layer heat-insulating layer storage and transportation tank bodies. The passive protection of serious traffic accidents such as accidental leakage fire during storage and transportation, accidental sudden collision during road transportation, rollover and the like has no special safety guarantee and has low protection capability on the tank body.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-fighting device and transport vechicle are prevented to inflammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence aims at solving the inflammable and explosive hazardous articles haulage vehicle among the prior art and bumps, reveals, technical problem that passive form protective capacities is low when the accident conflagration takes place.

In order to achieve the above object, the utility model adopts the following technical scheme: the liquid nitrogen intelligent fire prevention and extinguishing device comprises a detection mechanism, a liquid nitrogen mechanism and an anti-collision buffer mechanism, wherein the detection mechanism is arranged at the front end and the rear end of a tank body for containing flammable and explosive dangerous goods and is used for detecting the collision pressure acted on the tank body from the outside and detecting the temperature of the tank body, and the limit range of the collision pressure borne by the tank body and the preset temperature of the tank body can be preset on the detection mechanism; the liquid nitrogen mechanism is arranged at the upper end of the tank body and connected with the detection mechanism, the liquid nitrogen mechanism is connected with a self-contained compressed air system on a transport vehicle for transporting the tank body in parallel, liquid nitrogen in the liquid nitrogen mechanism is pushed upwards to the tank body by means of the air pressure of the compressed air system and enters a semi-closed space between a single layer of the tank body and an outer armor, then the liquid nitrogen forms an ice gas layer to surround the single layer of the tank body and realize self rescue, the temperature of the tank body is changed in a short time, and explosion conditions formed by combustion high-temperature expansion are blocked, the operation of the liquid nitrogen mechanism is controlled by the detection mechanism, and when the temperature and impact pressure of the tank body detected by the detection mechanism are within a limited range, the detection mechanism commands the liquid nitrogen mechanism to operate; the anti-collision buffer mechanism is arranged on the transport vehicle or the tank body and is used for preventing the tank body from being collided in the transportation and buffering the torsional force and the inertia force acting on the tank body.

As another embodiment of the application, the detection mechanism comprises a pressure sensor, a temperature sensor and an instrument automatic control box; the pressure sensors are arranged at the front end and the rear end of the tank body and are used for detecting the impact pressure acting on the tank body; the temperature sensors are uniformly distributed at the upper end of the tank body and used for detecting the temperature of the tank body; the instrument is from the built-in direct current lithium electricity power, PLC data collection and the execution control system that has of control box, respectively with pressure sensors with temperature-sensing ware electric connection is used for receiving pressure sensors with temperature-sensing ware's signal can set up the punching pressure that the jar body receives and predetermine the injecture range of jar body temperature on the execution control system, it is steerable to execute control system liquid nitrogen mechanism operation.

As another embodiment of the application, the liquid nitrogen mechanism comprises a frame body, a liquid nitrogen storage tank, a liquid nitrogen control valve, a compressed air electromagnetic valve and a mixed gas conveying assembly; the frame body is arranged on the transport vehicle and positioned at the periphery of the tank body and used for fixedly wrapping the tank body; the liquid nitrogen storage tank stores liquid nitrogen and is arranged at the top of the frame body; the liquid nitrogen control valve is arranged on a liquid nitrogen output conduit of the liquid nitrogen storage tank, is connected with the instrument automatic control box and is controlled by the instrument automatic control box, the liquid nitrogen output conduit is also communicated with the compressed air system in parallel, original vehicle-mounted self-matched compressed air is used as pushing auxiliary liquid nitrogen for conveying and can push liquid nitrogen to each part of the tank body, after the liquid nitrogen control valve is opened, the liquid nitrogen in the liquid nitrogen storage tank is output to the liquid nitrogen output conduit, and the pressure of the liquid nitrogen is uniformly conveyed to each area on the tank body by means of the output air pressure of the compressed air system; the compressed air electromagnetic valve is arranged between the compressed air system and the liquid nitrogen output conduit and is used for opening, controlling and assisting the compressed air system to convey to the liquid nitrogen output conduit; one end of the mixed gas conveying assembly is communicated with an outlet of the liquid nitrogen output conduit, and the other end of the mixed gas conveying assembly is a free end and is positioned between the single layer of the tank body and the heat insulation layer, and is used for conveying liquid nitrogen airflow into the semi-closed space.

As another embodiment of the application, the mixed gas conveying assembly comprises a main pipeline and a plurality of nozzles, one end of the main pipeline is communicated with a liquid nitrogen outlet of the liquid nitrogen output conduit, the other end of the main pipeline is closed and used for conveying liquid nitrogen, and the length direction of the main pipeline is parallel to the length direction of the tank body; the spout is a plurality of, and the equipartition is located on the lower terminal surface of trunk line, along jar body length direction equipartition, it is a plurality of the spout all with the trunk line intercommunication, liquid nitrogen in the trunk line is through a plurality of the spout is to the blowout in the airtight space.

As another embodiment of the present application, the anti-collision buffer mechanism includes a front inertial pressure buffer mechanism and a rear inertial pressure buffer mechanism, and the front inertial pressure buffer mechanism is disposed in the middle of the front end surface of the tank body and is used for buffering the pressure acting on the front end of the tank body; the back inertia pressure buffer mechanism is arranged in the middle of the front end surface of the tank body and used for buffering the pressure acting on the back end of the tank body.

As another embodiment of the application, the tank body can slide in a small range along the length direction of the transport vehicle by means of external force, and the anti-collision buffer mechanism further comprises a front steel spring in the base track and a rear steel spring in the base track; one end of a front steel spring in the foundation rail is arranged at the bottom of the front end of the tank body, and the other end of the front steel spring is connected to the front of the frame of the transport vehicle and is used for buffering the pressure of front and rear inertia external force acting on the front end of the tank body; one end of a rear steel spring in the base track is arranged at the bottom of the rear end of the tank body, and the other end of the rear steel spring is connected to the rear part of the frame of the transport vehicle and used for buffering the pressure of the front and rear inertia external force acting on the tank body.

As another embodiment of this application, be equipped with the track on the transport vechicle frame, the track sets up along jar body front and back length direction, jar body bottom be equipped with be used for with track sliding connection's slider, the track passes through the retaining member to be fixed on the frame, the slider passes through the retaining member to be fixed in jar body bottom, be equipped with the anticreep subassembly on the track, the anticreep subassembly is used for preventing a jar body follow the slippage on the track.

As another embodiment of this application, anticollision buffer gear still includes frame support column buffering subassembly, and support column buffering subassembly is a plurality ofly, for independent arc buffering frame-type, all sets up in airtight space along jar body circumference, and the bottom passes through the steel spring connection of cushion rubber parcel, top and heat preservation inner wall connection with jar body individual layer outer wall, does the pipeline of liquid nitrogen mechanism provides the support, keeps the heat preservation to bear the buffer distance of external force for the pressure of buffering action in the different directions on the heat preservation.

As another embodiment of the application, an anti-collision steel beam is fixedly arranged on the transport vehicle and the skirt of the vehicle body structure, the tank body is arranged in a protective frame surrounded by the anti-collision steel beam, the anti-collision steel beam is in suspension connection with the tank body through a plurality of protective buffer assemblies, and the protective buffer assemblies are used for buffering pressure acting on the tank body;

the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transport vehicle is also suitable for vehicle-mounted carbon dioxide fire extinguishing, vehicle-mounted dry powder fire extinguishing and liquid nitrogen medium conveying control.

The utility model also provides a transport vechicle, transport vechicle is including the vehicle body that is used for transporting inflammable and explosive hazardous articles, still including locating the inflammable and explosive hazardous articles transport vehicle liquid nitrogen intelligence fire prevention and extinguishing device on the vehicle body.

The utility model provides a flammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention and extinguishing device's beneficial effect lies in: compared with the prior art, the utility model discloses flammable explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention device can in time carry out passive protection to the jar body, make the jar body furthest not hurt, detect the apparent temperature of the jar body and detect the pressure that acts on the jar body through detection mechanism, through the predetermined limited range, just can judge whether open liquid nitrogen mechanism, if there is the accident to take place, the crew is stranded or can not manual work direct operation, then jar body apparent temperature risees and/or the pressure on the jar body increases, automatic immediately through the release of liquid nitrogen, make airtight space rapidly cool down to minus 65-125 degrees, guarantee jar body temperature shock around, cut off the burning condition, guarantee because the burning temperature risees the fusion inflation produces violent explosion, wait for professional rescue; the anti-collision buffer mechanism can reduce and relieve the vicious collision accidents of the carrier from different directions, reduce the self inertia and direct contact damage of the shell of the tank body to the maximum extent, even the overturn of the shell of the tank body with the universality and reduce the accident leakage rate of the tank body oil or chemical hazardous article carrying vehicle.

The utility model provides a transport vechicle's beneficial effect lies in: the utility model discloses still be applicable to software and hardware equipment, automatic system, the pipeline transport mode of inflammable and explosive hazardous articles, can equally form a complete set with carbon dioxide medium, dry powder and other fire extinguishing medium, compare with prior art, the utility model provides a transport vechicle has adopted liquid nitrogen intelligence fire prevention and extinguishing device, beneficial effect with above-mentioned liquid nitrogen intelligence fire prevention and extinguishing device's effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of an intelligent liquid nitrogen fire prevention and extinguishing device for a flammable and explosive hazardous material transport vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic longitudinal sectional view of an intelligent liquid nitrogen fire prevention and extinguishing device for a transportation vehicle for flammable and explosive hazardous materials, provided by an embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure between the bottom of a tank body and a frame of a transportation vehicle of the intelligent liquid nitrogen fire prevention and extinguishing device for a transportation vehicle for flammable and explosive hazardous materials provided by the embodiment of the utility model;

fig. 4 is that another embodiment of the utility model provides a flammable and explosive hazardous materials transport vehicle liquid nitrogen intelligence fire prevention device's partial support body and can dismantle the armor connection structure of being connected front view and look sideways at the schematic diagram after combining.

In the figure: 1. a detection mechanism; 11. a pressure sensor; 12. a temperature sensor; 13. an instrument automatic control box;

2. a liquid nitrogen mechanism; 21. a frame body; 22. a liquid nitrogen storage tank; 23. a liquid nitrogen control valve; 24. a compressed air solenoid valve; 25. a mixed gas delivery assembly; 251. a main pipeline; 252. a spout; 26. a liquid nitrogen output conduit; an armor 27;

3. an anti-collision buffer mechanism; 31. a front inertial pressure buffer mechanism; 32. a rear inertial pressure buffer mechanism; 33. a front steel spring in the base track; 34. a rear steel spring is arranged in the base track; 35. a frame-type support post buffer assembly;

4. a tank body;

5. a track;

6. a slider;

7. a locking member;

8. an anti-collision steel beam;

9. sealing the space;

10. and a protective buffer component.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses a research and development that goes on under the prerequisite that does not violate (transport liquid dangerous goods tank vehicle national standard of regulation) each item safety standard.

The temperature formed in the air after the liquid nitrogen is diffused is 65-125 ℃, and the liquid nitrogen has the functions of quickly cooling, isolating the air and extinguishing inflammable matters.

The heat preservation on the jar body means: the detachable protective quartz heat insulation tile arranged on the tank body forms a small-mesh semi-closed space between the heat insulation layer and a single layer of the tank body, liquid nitrogen can enter each area of the tank body, an expansion space is formed between interlayers under a light combustion condition to prevent expansion steam flow from being formed, and the outer layer cover is separated, so that the heat insulation layer is designed into an armor heat insulation tile with air holes, the expansion gas in the semi-closed space can be released through a plurality of small air holes, meanwhile, the atmospheric liquid nitrogen can be kept in the space, after the space is filled with a liquid nitrogen medium to be cooled, the liquid nitrogen and air water vapor form an ice layer, the small meshes are sealed by the ice layer, and therefore, the oxygen quantity combustion condition is fundamentally blocked to control the fire.

Referring to fig. 1 to 4, the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transportation vehicle provided by the present invention will now be described. The liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive dangerous goods transport vehicle comprises a detection mechanism 1, a liquid nitrogen mechanism 2 and an anti-collision buffer mechanism 3, wherein the detection mechanism 1 is arranged at the front end and the rear end of a tank body 4 for containing flammable and explosive dangerous goods and is used for detecting the collision pressure acted on the tank body 4 from the outside and the temperature of the tank body 4, and the limit range of the collision pressure borne by the tank body 4 and the temperature of the tank body 4 can be preset on the detection mechanism 1; the liquid nitrogen mechanism 2 is arranged at the upper end of the tank body 4 and connected with the detection mechanism 1, the liquid nitrogen mechanism 2 is connected with a self-contained compressed air system on a transport vehicle for transporting the tank body 4 in parallel, liquid nitrogen in the liquid nitrogen mechanism 2 is pushed onto the tank body 4 by virtue of air pressure of the compressed air system and enters a semi-closed space 9 (interlayer liquid nitrogen is diffused and exhausted) between a single layer of the tank body 4 and an outer armor, then the liquid nitrogen forms an ice gas layer to surround the single layer of the tank body 4 and realize self rescue, the temperature of the tank body is changed in a short time, explosion conditions formed by combustion high-temperature expansion are blocked, the operation of the liquid nitrogen mechanism 2 is controlled by the detection mechanism 1, and when the temperature and impact pressure of the tank body 4 detected by the detection mechanism 1 are within a limited range, the detection mechanism 1 orders the liquid nitrogen mechanism 2 to operate; the anti-collision buffer mechanism 3 is arranged on the transport vehicle or the tank body 4 and is used for preventing the tank body 4 from being collided in the transportation and buffering the twisting force and the inertia force acting on the tank body 4.

Compared with the prior art, the intelligent liquid nitrogen fire prevention and extinguishing device for the flammable and explosive hazardous article transportation vehicle can timely perform passive buffering protection on the tank body 4 during an accident period, so that the shell of the tank body 4 can not be damaged and leaked to the maximum extent, the detection mechanism 1 is used for detecting the surface temperature of the tank body 4 and detecting the pressure acting on the tank body 4, whether the liquid nitrogen mechanism 2 is started or not can be judged through a preset limit range, if an accident happens, drivers and passengers are trapped or cannot directly operate manually, the surface temperature of the tank body 4 is increased and/or the pressure on the tank body 4 is increased, the liquid nitrogen control valve 23 is automatically opened, and the enclosed space 9 (interlayer liquid nitrogen diffusion space) around the tank body 4 is rapidly cooled to minus 65-125 ℃ through the release of stored liquid nitrogen, the sudden temperature drop around the tank body 4 is guaranteed, the entering of sufficient oxygen and the combustion conditions are cut off, the violent explosion caused by thermal deformation expansion due to the rise of the combustion temperature is guaranteed, and the time for waiting for professional rescue is won; the anti-collision buffer mechanism 3 can reduce and relieve the vicious collision accidents of the carrier from different directions, reduce the self inertia and the direct damage of the shell of the tank body 4 to the maximum extent, even incline in a non-violent and common way, and reduce the accident leakage rate of the oil or chemical dangerous goods carrying vehicles of the tank body 4.

The above outer armor is understood to be a thermal insulation layer. The liquid nitrogen mechanism 2 and two paths of inlets of a compressed air outlet which is arranged on a transport vehicle for transporting the tank body 4 are combined to enter a main pipe to push liquid nitrogen medium to run in the pipe at a high speed. The closed space 9 is an interlayer liquid nitrogen diffusion space.

For setting the limit range, the following cases can be referred to: the temperature can be set in a temperature range slightly higher than the temperature in daily transportation or the ambient temperature in summer; the pressure may be set so that the inertia of the tank 4 due to collision exceeds the weight of the tank 4, and the pressure is a pressure threshold value at which the tank 4 collides and twists at an extreme collision pressure, and if the pressure exceeds the threshold value, the liquid nitrogen mechanism 2 is opened and functions. The liquid nitrogen mechanism 2 can block the explosion condition of the tank body 4, and if the explosion condition is blocked, the tank body 4 cannot explode, so that major accidents are prevented.

The air pressure output by the compressed air system on the transport vehicle pushes the liquid nitrogen to output into the closed space 9 (interlayer liquid nitrogen diffusion space) of the tank body 4, and the pressure of the compressed air system is about 20 MPa. Under the condition of compressed air accompanying pressure, liquid nitrogen reaches the semi-closed space 9 and has certain jet flow guide, the interlayer space on the surface layer of the tank body 4 is filled with the compressed air and is rapidly cooled to minus 65-125 ℃, the sudden temperature drop around the tank body 4 is ensured, the combustion condition is cut off, the tank body 4 is rapidly cooled to extinguish the instantaneous combustion condition of oil products and fuel products, the violent explosion generated by fusion expansion due to the rise of the combustion temperature is ensured, and the liquid nitrogen at minus 100 ℃ can also react with water in the air to form the freezing seal of local fuel leakage points.

As a specific implementation manner of the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transportation vehicle provided by the utility model, please refer to fig. 1 to 4, the detection mechanism 1 includes a pressure sensor 11, a temperature sensor 12 and an instrument automatic control box 13; the pressure sensors 11 are arranged at the front end and the rear end of the tank body 4 and are used for detecting impact pressure acting on the tank body 4; the temperature sensors 12 are uniformly distributed at the upper end of the tank body 4 and used for detecting the temperature of the tank body 4; the instrument automatic control box 13 is internally provided with a direct-current lithium battery power supply and a PLC data acquisition and execution control system which are respectively electrically connected with the pressure sensor 11 and the temperature sensor 12 and used for receiving signals of the pressure sensor 11 and the temperature sensor 12, a limit range of the stamping pressure of the tank body 4 and the temperature of the tank body 4 can be set on the execution control system, and the execution control system can control the operation of the liquid nitrogen mechanism 2.

Specifically, the execution control system is a PLC controller, and can control the operation of each execution component, and also can preset a limit range or parameter on the execution control system, and can realize the automatic control operation of each execution component. The tank body 4 is protected at the first time after an accident happens conveniently.

As a specific implementation manner of the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transportation vehicle provided by the present invention, please refer to fig. 1 to 4, the liquid nitrogen mechanism 2 includes a frame body 21 (detachably connected with an armor 27), a liquid nitrogen storage tank 22, a liquid nitrogen control valve 23, a compressed air solenoid valve 24 and a mixed gas conveying assembly 25; the frame body 21 is arranged on the transport vehicle, is positioned at the periphery of the tank body 4 and is used for fixedly wrapping and arranging the buffer tank body 4; the liquid nitrogen storage tank 22 stores liquid nitrogen and is arranged at the top of the frame body 21; the liquid nitrogen control valve 23 is arranged on a liquid nitrogen output conduit 26 of the liquid nitrogen storage tank 22, is connected with the instrument automatic control box 13 and is controlled by the instrument automatic control box 13, the liquid nitrogen output conduit 26 is also communicated with a compressed air system in parallel, original vehicle-mounted self-matched compressed air is used as pushing auxiliary liquid nitrogen for conveying, the liquid nitrogen can be pushed to each area of the tank body, after the liquid nitrogen control valve 23 is opened, the liquid nitrogen in the liquid nitrogen storage tank 22 is output to the liquid nitrogen output conduit 26, and the pressure of the liquid nitrogen is uniformly conveyed to each area of the tank body 4 by means of the output air pressure of the compressed air system; the compressed air electromagnetic valve 24 is arranged between the compressed air system and the liquid nitrogen output conduit 26 and is used for opening and controlling and assisting the accompanying compressed air system to convey the compressed air to the liquid nitrogen output conduit 26; one end of the mixed gas conveying assembly 25 is communicated with the outlet of the liquid nitrogen output conduit 26, and the other end is a free end and is positioned between the single layer of the tank body 4 and the heat insulation layer, and is used for conveying liquid nitrogen airflow into the semi-closed space 9 (interlayer liquid nitrogen diffusion space). Frame body 21 can be the frame body, and outer armor is for dismantling between frame body 21 and is connected. The frame body 21 is detachably connected with an armor 27, and the armor 27 is arranged on the transport vehicle.

The liquid nitrogen storage tank 22 is a special liquid nitrogen container for storing liquid nitrogen and is used for regular inspection, and the liquid nitrogen control valve 23 is a liquid nitrogen automatic control valve and can realize automatic control.

As a specific implementation manner of the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transportation vehicle, please refer to fig. 1 to 4, the mixed gas conveying assembly 25 comprises a main pipe 251 and a plurality of nozzles 252, one end of the main pipe 251 is communicated with the liquid nitrogen outlet of the liquid nitrogen output conduit 26, the other end is closed for guiding and conveying the liquid nitrogen, and the length direction of the main pipe 251 is parallel to the length direction of the tank body 4; the nozzles 252 are uniformly distributed on the lower end surface of the main pipe 251 and uniformly distributed along the length direction of the tank body 4, the nozzles 252 are communicated with the main pipe 251, and liquid nitrogen in the main pipe 251 is sprayed out of the closed space 9 (interlayer liquid nitrogen diffusion space) through the nozzles 252.

As a specific implementation manner of the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transportation vehicle provided by the present invention, please refer to fig. 1 to 4, the anti-collision buffer mechanism 3 includes a front inertia pressure buffer mechanism 31 and a rear inertia pressure buffer mechanism 32, the front inertia pressure buffer mechanism 31 is disposed in the middle of the front end surface of the tank body 4, and is used for buffering the pressure of the front and rear inertia external force acting on the tank body 4; the back inertia pressure buffer mechanism 32 is arranged in the middle of the front end surface of the tank 4 and is used for buffering the pressure of the front and back inertia external force acting on the tank 4. The front inertia pressure buffer mechanism 31 and the rear inertia pressure buffer mechanism 32 have the same structure, and are internally provided with anti-collision spring parts to play roles of buffering and shock absorption.

Specifically, the front-rear inertial force refers to the impact force of the front end and the rear end of the tank 4, and both the front inertial pressure damping mechanism 31 and the rear inertial pressure damping mechanism 32 play a role in damping.

As a specific embodiment of the liquid nitrogen intelligent fire prevention and extinguishing device for the transportation vehicle for flammable and explosive hazardous materials provided by the present invention, please refer to fig. 1 to 4, the tank 4 can slide along the length direction of the transportation vehicle at a small distance by means of external force (impact force acting on the tank 4 from the outside), the anti-collision buffer mechanism 3 further comprises a front steel spring 33 in the base track and a rear steel spring 34 in the base track; one end of a front steel spring 33 in the base track is arranged at the bottom of the front end of the tank body 4, and the other end of the front steel spring is connected to the front part (front steel rail base) of the frame of the transport vehicle and is used for buffering the pressure acting on the front end of the tank body 4; one end of a rear steel spring 34 in the base track is arranged at the bottom of the rear end of the tank body 4, and the other end of the rear steel spring is connected to the rear part (rear steel rail base) of the frame of the transport vehicle and is used for buffering the pressure acting on the rear end of the tank body 4. The front steel spring 33 in the base track and the rear steel spring 34 in the base track have the same structure, and an anti-collision spring part is arranged in the base track to play roles of buffering and shock absorption.

On the premise of ensuring the normal transportation stability, under the condition that the tank body 4 bears the accident external force which exceeds the conventional preset safety coefficient by several times, the tank body 4 can do stress sliding along the front and back direction of the transport vehicle, and the anti-collision buffer mechanism 3 also comprises a front steel spring 33 in the basic track and a back steel spring 34 in the basic track; one end of a front steel spring 33 in the foundation rail is arranged in a steel spring box cylinder at the bottom of the foundation at the front end of the tank body 4, and the steel spring box cylinder is fixed with a frame of the transport vehicle body and is used for buffering the pressure of the inertial external force acting on the front end of the tank body 4 after the front end is collided; one end of a rear steel spring 34 in the base track is arranged in a steel spring box cylinder at the bottom of the tank body base at the rear end of the tank body 4, and the steel spring box cylinder is fixed with the body frame and is used for buffering the external force of inertia after the rear part is collided, so that the tank body 4 is prevented from large-area leakage caused by perforation or tearing of the tank body due to direct stress.

After the tank body 4 is subjected to the ultimate external force of the original basic insurance, the tank body can move in a small range in a rail way along the length direction of the front and rear vehicles through the buffering of front and rear end stress steel springs.

The small distance means: after the tank body 4 is impacted, the tank body can slide in a small distance along the length direction of the transport vehicle, so that the impact force on the tank body 4 is buffered, and the small distance is within a certain short distance and is generally less than 0.5 m.

Preferably, one end of the front steel spring 33 in the base track is arranged in a steel spring pipe at the bottom of the front end of the tank body 4, and the other end of the front steel spring is connected to the base track groove of the tank body 4; one end of a rear steel spring 34 in the base track is arranged in a steel spring pipe at the bottom of the rear end of the tank body 4, and the other end is connected to the base track groove of the tank body 4.

As the utility model provides a flammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention device's a specific implementation way, please refer to and draw together fig. 1 to 4, the fixed 4 basic tracks 5 of jar body that are equipped with on the transport vechicle frame, track 5 sets up along the 4 front and back length direction of the jar body, 4 bottoms of the jar body are equipped with the slider 6 that is used for with track 5 sliding connection, track 5 passes through retaining member 7 to be fixed on the frame, slider 6 passes through retaining member 7 to be fixed in 4 bottoms of the jar body, be equipped with the anticreep subassembly on the track 5, the anticreep subassembly is used for preventing 4 bases of the jar body from moving the slippage from track 5. The track 5 is the track 5 which is provided with hard asbestos products and is made of insulating and anti-ignition materials and is arranged at the bottom of the base of the tank body 4 of the transport vehicle. The rail 5 is an ignition prevention rail 5.

The track is special bearing track, and the slider is safe high temperature resistant quartz material, and the anticreep subassembly has played safe fixed effect, guarantees to go safely in the normal limit. When the external force collides to exceed the limit pressure range, the anti-falling assembly is separated from the tank body 4 and the track 5, and the tank body 4 pushes the steel spring in the cylinder back and forth along the track 5 to slide back and forth at a small distance for buffering the inertia pressure. The track 5 is made of high-temperature-resistant quartz.

4 bottom foundation supports of the jar body are equipped with and are preset stress safety bolt with track 5, and track 5 passes through retaining member 7 to be fixed on the frame, and 4 foundations of the jar body are restricted in anticreep track 5 through the tongue and groove, fix in 4 bottoms of the jar body through retaining member 7, are equipped with the anticreep subassembly on track 5, the anticreep subassembly is used for preventing the jar body 4 slippage from track 5, and when the anticreep subassembly received the limit to strike and surpass the stable preset stress of going, the slip of positive and negative direction can be carried out on 4 foundations of the jar body at track 5, carries out the buffering release of impulsive force and decomposes by the front and back 4 middle part stress steel spring of the jar body.

Specifically, the rail 5 is made of high-temperature-resistant quartz, so that the sliding block 6 or the tank 4 is allowed to slide on the slideway for a certain distance, the distance is limited, and the movement of the tank 4 is limited beyond the range. Only with this arrangement is it ensured that the can body 4 slides on the rails 5, in which sliding the pressure acting on the can body 4 is damped.

As the utility model provides a fire-fighting equipment is prevented to inflammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence please refer to and draw together 1 to fig. 4, anticollision buffer gear 3 still includes frame support column buffering subassembly 35, and frame support column buffering subassembly 35 is a plurality of, for independent arc buffer frame formula, all sets up in airtight space 9 (the space is diffused to the intermediate layer liquid nitrogen) along 4 circumference of jar body, and the bottom is connected through the steel spring of buffer rubber parcel, top and heat preservation wall connection with 4 individual layer outer walls of jar body, for the pipeline of liquid nitrogen mechanism provides the support, keeps the heat preservation to bear the buffer distance of external force, is used for the pressure of buffering action equidirectional on the heat preservation.

Frame bearing structure buffer unit 35 contains buffer's frame-type obstacle-protecting body for a plurality of arcs, bottom and jar 4 atress keel structure as crashproof buffering strong point, buffer's unsettled fixed connection through purpose-made parcel rubber steel spring, the structure also provides the support for liquid nitrogen mechanism 2's injection pipeline fixed mounting simultaneously, it has certain transmission space interval to ensure jar 4 inside liquid nitrogen gas that bears of body, be used for fixed outmost dismantlement to separate warm armour, make inner space and outer armour of dismantling have certain inside bearing capacity.

Rubber parcel steel spring, rubber material can the anticollision strike sparks, avoids arousing the burning things which may cause a fire disaster. The support column buffer assembly 35 provides support for the tubes of the liquid nitrogen mechanism to prevent the tubes from collapsing. The pressures acting on the can body 4 in different directions refer to impact forces acting on the can body 4 in different directions.

The vehicle comes from collision, whipping, distortion, the general nothing of different position and rolls and topples over, through setting up a plurality of support column buffer assembly 35, can make about bump, distortion power block the waist and obtain buffering in the twinkling of an eye, can play the effect to the protection of jar body 4, prevents that jar body 4 from revealing, plays the effect of moving away to avoid possible earthquakes.

The built-in steel spring of support column buffering subassembly 35, the fixed effect of the main supplementary jar of body 4, to the big amplitude swing about certain intensity, the basis supports the armguard and can cushion the centrifugal force that restraines jar body 4, reduces because the big amplitude side to side that produces when the vehicle collision sways, reduces and topples over the probability.

As the utility model provides a flammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention device's a detailed implementation way, please refer to and draw together fig. 1 to fig. 4, on the transport vechicle with fixed crashproof steel beam 8 that is equipped with of body construction skirt, inside crashproof steel beam 8 encloses the protective frame that is arranged in to jar body 4, a plurality of protection buffering subassemblies 10 through setting up support floated the connection between crashproof steel beam 8 and the jar body 4, protection buffering subassembly 10 is used for the pressure of buffering effect on jar body 4. The front steel spring 33 in the base track and the rear steel spring 34 in the base track can be connected to the anti-collision steel beam 8. The support is suspended, that is, the support is provided for the protection buffer assembly 10 to support a certain height.

A certain distance is kept between the anti-collision steel beam 8 and the tank body 4, and the protection buffer assembly 10 is used for buffering the buffer device of the impact force of the rear part, the left side and the right side through the hollow energy-absorbing aluminum alloy body at the periphery of the side.

The liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transport vehicle is also suitable for software and hardware of different media for vehicle-mounted carbon dioxide fire extinguishing and vehicle-mounted dry powder fire extinguishing, such as automatic detection, an automatic execution mechanism and a matched jet fluid pipeline.

Specifically, the large-gap steel spring is arranged in the anti-collision steel beam 8, and the whole hollow honeycomb steel plate structure has an energy absorption effect on direct collision. The protection buffering assembly 10 comprises a spring piece which is transversely arranged and a spring piece which is vertically arranged, and can play a role in buffering the tank body 4 in the horizontal direction and also play a role in buffering the tank body 4 in the vertical direction.

The above outer armor is understood to be armor 27.

The utility model also provides a transport vechicle, transport vechicle still including locating the flammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention and extinguishing device on the vehicle body including the vehicle body that is used for transporting flammable and explosive hazardous articles.

The utility model provides a transport vechicle, the liquid nitrogen intelligence fire prevention and extinguishing device of foretell inflammable and explosive hazardous articles transport vechicle has been adopted, still be applicable to the software and the hardware equipment of inflammable and explosive hazardous articles, automated inspection operating system, pipeline transport mode, the equipment principle also can form a complete set with the carbon dioxide medium, the application of dry powder and other fire extinguishing medium, when accidents such as vehicle bumps, can the very first time protective tank body 4, do not reveal, furthest reduces the loss that burning explosion brought, guarantee transport vechicle all ring edge borders and other lives and property's safety.

A main monitoring instrument panel, a dangerous goods vehicle-mounted satellite positioning real-time transmission monitor, a distance measurement warning device before and after radio frequency analysis are generally arranged on the transport vehicle, and the transport vehicle is further provided with liquid nitrogen storage and guarantee equipment, a lithium battery pack power supply, a tank body 4 diffusing maintenance valve, a liquid nitrogen wave-reducing curved surface partition plate and a liquid nitrogen storage electronic pressure sensor.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Flammable and explosive hazardous articles haulage vehicle liquid nitrogen intelligence fire prevention and extinguishing device, its characterized in that includes:

the detection mechanism is arranged at the front end and the rear end of the tank body for containing the flammable and explosive dangerous goods and is used for detecting the impact pressure acted on the tank body from the outside and the temperature of the tank body, and the limit range of the impact pressure borne by the tank body and the preset temperature of the tank body can be preset on the detection mechanism;

the liquid nitrogen mechanism is arranged at the upper end of the tank body and connected with the detection mechanism, the liquid nitrogen mechanism is connected with a self-contained compressed air system on a transport vehicle for transporting the tank body in parallel, liquid nitrogen in the liquid nitrogen mechanism is pushed upwards to the tank body by means of the air pressure of the compressed air system and enters a semi-closed space between a single layer of the tank body and an outer armor, then the liquid nitrogen forms an ice gas layer to surround the single layer of the tank body and realize self rescue, the temperature of the tank body is changed in a short time, and explosion conditions formed by combustion high-temperature expansion are blocked, the operation of the liquid nitrogen mechanism is controlled by the detection mechanism, and when the temperature and impact pressure of the tank body detected by the detection mechanism are within a limited range, the detection mechanism commands the liquid nitrogen mechanism to operate; and

the anti-collision buffer mechanism is arranged on the transport vehicle or the tank body and used for preventing the tank body from being collided in the transportation and buffering the torsional force and the inertia force acting on the tank body.

2. The intelligent liquid nitrogen fire prevention and extinguishing device for the flammable and combustible hazardous material transportation vehicle as claimed in claim 1, wherein the detection mechanism comprises:

the pressure sensors are arranged at the front end and the rear end of the tank body and are used for detecting the impact pressure acting on the tank body;

the temperature sensors are uniformly distributed at the upper end of the tank body and used for detecting the temperature of the tank body; and

the instrument automatic control box is provided with a direct-current lithium battery power supply, a PLC (programmable logic controller) data acquisition and execution control system, and is respectively connected with the pressure sensor and the temperature sensor in an electric connection mode, the pressure sensor is used for receiving signals of the temperature sensor, the execution control system can be used for setting the stamping pressure of the tank body and presetting the limiting range of the temperature of the tank body, and the execution control system can be controlled to operate the liquid nitrogen mechanism.

3. The intelligent liquid nitrogen fire prevention and extinguishing device for the flammable and combustible hazardous material transportation vehicle according to claim 2, wherein the liquid nitrogen mechanism comprises:

the frame body is arranged on the transport vehicle and positioned at the periphery of the tank body and used for fixedly wrapping the tank body;

the liquid nitrogen storage tank stores liquid nitrogen and is arranged at the top of the frame body;

the liquid nitrogen control valve is arranged on a liquid nitrogen output conduit of the liquid nitrogen storage tank, is connected with the instrument automatic control box and is controlled by the instrument automatic control box, the liquid nitrogen output conduit is also communicated with the compressed air system in parallel, original vehicle-mounted self-matched compressed air is used as pushing auxiliary liquid nitrogen for conveying and can push the liquid nitrogen to each part of the tank body, after the liquid nitrogen control valve is opened, the liquid nitrogen in the liquid nitrogen storage tank is output to the liquid nitrogen output conduit, and the pressure of the liquid nitrogen is uniformly conveyed to each area of the tank body by means of the output air pressure of the compressed air system;

the compressed air electromagnetic valve is arranged between the compressed air system and the liquid nitrogen output conduit and is used for opening, controlling and assisting the compressed air system to convey the compressed air to the liquid nitrogen output conduit; and

and one end of the mixed gas conveying assembly is communicated with the outlet of the liquid nitrogen output conduit, and the other end of the mixed gas conveying assembly is a free end and is positioned between the single layer of the tank body and the heat insulation layer, and is used for conveying liquid nitrogen airflow into the semi-closed space.

4. The intelligent liquid nitrogen fire prevention and extinguishing device for the flammable and combustible hazardous material transportation vehicle according to claim 3, wherein the mixed gas conveying assembly comprises:

one end of the main pipeline is communicated with a liquid nitrogen outlet of the liquid nitrogen output conduit, the other end of the main pipeline is closed and used for transmitting liquid nitrogen, and the length direction of the main pipeline is parallel to the length direction of the tank body; and

the spout is a plurality of, and the equipartition is located on the lower terminal surface of trunk line, along jar body length direction equipartition, it is a plurality of the spout all with the trunk line intercommunication, liquid nitrogen in the trunk line is through a plurality of the spout is to the blowout in the airtight space.

5. The intelligent liquid nitrogen fire prevention and extinguishing device for the flammable and combustible hazardous material transportation vehicle as claimed in claim 1, wherein the anti-collision buffer mechanism comprises:

the front inertia pressure buffer mechanism is arranged in the middle of the front end surface of the tank body and is used for buffering the pressure acting on the front end of the tank body; and

the back inertia pressure buffer mechanism is arranged in the middle of the front end surface of the tank body and used for buffering the pressure acting on the back end of the tank body.

6. The intelligent liquid nitrogen fire prevention and extinguishing device for the transportation vehicle for the flammable and combustible hazardous materials according to claim 5, wherein the tank body can slide along the length direction of the transportation vehicle within a small range by means of external force, and the anti-collision buffer mechanism further comprises:

one end of a front steel spring in the foundation rail is arranged at the bottom of the front end of the tank body, and the other end of the front steel spring is connected to the front of the frame of the transport vehicle and is used for buffering the pressure of front and rear inertia external force acting on the tank body; and

and one end of a rear steel spring in the base track is arranged at the bottom of the rear end of the tank body, and the other end of the rear steel spring is connected to the rear part of the frame of the transport vehicle and is used for buffering the pressure of the front and rear inertia external force acting on the tank body.

7. The intelligent liquid nitrogen fire prevention and extinguishing device for the transportation vehicle for the flammable and combustible hazardous materials as claimed in claim 6, wherein a rail is fixedly arranged on the frame of the transportation vehicle, the rail is arranged along the front and rear length directions of the tank body, a sliding block is arranged at the bottom end of the tank body and is used for being slidably connected with the rail, the rail is fixed on the frame through a locking piece, the sliding block is fixed at the bottom end of the tank body through the locking piece, an anti-dropping assembly is arranged on the rail and is used for preventing the tank body from dropping off from the rail.

8. The intelligent liquid nitrogen fire prevention and extinguishing device for the flammable and combustible hazardous material transportation vehicle as claimed in claim 1, wherein the anti-collision buffer mechanism further comprises:

frame support column buffering subassembly, for a plurality of, for independent arc buffering frame-type, all set up in airtight space along jar body circumference, the steel spring that bottom and jar body individual layer outer wall pass through the cushion rubber parcel is connected, top and heat preservation inner wall connection, for the pipeline of liquid nitrogen mechanism provides the support, keeps the heat preservation to bear the buffer distance of external force for the pressure of not equidirectional on the buffering acts on the heat preservation.

9. The intelligent liquid nitrogen fire prevention and extinguishing device for the transportation vehicle for the flammable and combustible hazardous materials as claimed in claim 1, wherein an anti-collision steel beam is fixedly arranged on the transportation vehicle and on a skirt of a vehicle body structure, the tank body is arranged in a protective frame surrounded by the anti-collision steel beam, the anti-collision steel beam and the tank body are in supporting suspension connection through a plurality of protective buffer assemblies, and the protective buffer assemblies are used for buffering pressure acting on the tank body;

the liquid nitrogen intelligent fire prevention and extinguishing device for the flammable and explosive hazardous material transport vehicle is also suitable for vehicle-mounted carbon dioxide fire extinguishing, vehicle-mounted dry powder fire extinguishing and liquid nitrogen medium conveying control.

10. Transport vechicle, including the vehicle body that is used for transporting inflammable and explosive hazardous materials, characterized by, still include locating the liquid nitrogen intelligence fire prevention and extinguishing device of inflammable and explosive hazardous materials transport vechicle of any one of claim 1-9 on the vehicle body.

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