CN110556720B - Liftable weak current case and weak current well - Google Patents
Liftable weak current case and weak current well Download PDFInfo
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- CN110556720B CN110556720B CN201910842394.8A CN201910842394A CN110556720B CN 110556720 B CN110556720 B CN 110556720B CN 201910842394 A CN201910842394 A CN 201910842394A CN 110556720 B CN110556720 B CN 110556720B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
- A62C99/0027—Carbon dioxide extinguishers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a liftable weak current box and a weak current well, which comprise a weak current well and a weak current box body positioned in the weak current well, wherein the side surfaces of the weak current box body, which are contacted with the inner wall of the weak current well, are respectively provided with a sliding block protruding out of the surface of the weak current box body; the lifting of the weak current box body is controlled through the winding and releasing of the pressure bearing cable, the outlet of the fire extinguishing device is opened by the weak current box body to achieve the purpose of fire extinguishing, the weak current box is effectively placed in different spaces, and on the basis of quickly and timely processing the fire condition of the weak current box, the influence outside the weak current well is reduced to the minimum.
Description
Technical Field
The invention relates to the field of weak current pipeline centralized control equipment, in particular to a liftable weak current box and a weak current well.
Background
The weak current vertical shaft is a vertical shaft which is conveniently built for laying cables for a building weak current system, and is called as the weak current shaft for short. The rapid development of building intellectualization for many years enables a large number of weak electric wells to be adopted in various buildings, and the use of the weak electric wells also enables the building intellectualization major to be more standard in planning and designing. And weak current lines in the weak current well comprise lines of a computer network, a cable television, a mobile phone signal, a monitoring system and the like, and the lines are centralized in a weak current box for control.
In a public area of a building, accidents can be timely monitored due to the existence of monitoring and sensors when the accidents generally occur, but workers cannot be densely arranged in the general building, so that a plurality of accidents can be timely found but cannot be timely handled when the accidents are not formed in scale, particularly, the existing fire accidents frequently occur, a weak well is an intelligent nerve center of the building, if the fire accidents occur, except equipment and circuits in a fire layer are burnt, computer networks, cable televisions, mobile phone signals, monitoring systems and the like are directly paralyzed, and secondary disasters such as power failure accidents, elevator faults and the like can also be caused; therefore, when a fire disaster occurs to the weak current box and the weak current well, the fire condition needs to be timely controlled, due to factors such as planning and cost, the weak current box of the residential area is generally arranged in the weak current well as in an interlayer, every two layers of weak current rooms for placing the weak current box are arranged, the control and maintenance of the weak current circuit are convenient, the probability of the fire condition occurring in the weak current rooms is increased due to the concentration of the circuits, a common elevator can be stopped during the fire condition, the time for workers and firefighters to arrive at the site and timely handle the fire condition is greatly prolonged, the fire condition cannot be killed in sprouts, the common weak current rooms are not sealed rooms, the influence on the corridor is generally large during the fire condition handling, the injury can be caused to the personnel in the corridor, and how to handle the fire condition occurring in the weak current well on the basis of causing the minimum influence outside the weak current well can be convenient for daily maintenance The field of pipeline centralized control equipment has urgent problems to be solved.
Disclosure of Invention
The invention aims to overcome the defect that the fire cannot be quickly and timely processed on the basis of small influence on the outside of a weak current well when the weak current box is placed in the weak current well in the prior art, and provides a liftable weak current box and the weak current well.
The purpose of the invention is mainly realized by the following technical scheme:
a liftable weak current case and a weak current well comprise a cuboid weak current well with a hollow interior and a weak current case body positioned in the weak current well, wherein the weak current case body is provided with two symmetrical side surfaces which are contacted with the inner wall of the weak current well, the side surfaces of the weak current case body contacted with the inner wall of the weak current well are respectively provided with a slide block protruding out of the surface of the weak current case body, the inner wall of the weak current well is provided with a slide way corresponding to the slide block in position, the bottom of the weak current well is also provided with a fire extinguishing device with an opening structure at the top end, the top of the fire extinguishing device is contacted with the bottom end surface of the slide way, a rotating shaft is arranged above the top wall of the weak current well, the rotating shaft is provided with a bearing cable, one end of the bearing cable is fixedly connected with the slide block, the other end of the bearing cable is fixedly connected with the rotating shaft, the middle part of the bearing cable is wound on the rotating shaft, the rotating shaft, the top of the fire extinguishing device is pressed through the slider on the side of the weak current box body to open the fire extinguishing device in the descending process.
In the prior art, at least one strong electric box and one weak electric box are required to be arranged in an interlayer in a high-rise building, strong electricity and weak electricity are required to be arranged in a separated mode, a constructor generally adopts a mode of arranging the weak electric boxes in the interlayer in the high-rise building in actual operation, a weak electric wire which is generally required to be arranged in a weak electric well comprises a network wire, a telephone wire, a monitoring wire, a fire-fighting distribution wire, a broadcast electric sight wire, a power wire and the like, most of equipment which are positioned in the weak electric well is load equipment, the machine does not stop working for 24 hours, the power is 20-100W, therefore, fire accidents in the general weak electric well are caused by overhigh temperature in the weak electric box, the fire accidents are mostly concentrated in the weak electric boxes, in addition, open fire caused by electric sparks or electric arcs is also an accident source, and after the fire accidents occur, the worker adopts fire-fighting facilities in the building to extinguish the fire when the fire accidents occur, the fire alarm is reported for subsequent treatment, fire extinguishment can be carried out only by firemen when the fire is large, general sensors and monitoring facilities in the building are complete, the fire can be found in time, but the working personnel often need a long time to drive to the fire occurrence part, so that weak fire can be turned into large fire, non-professional firemen cannot treat the fire completely, and the influence on residents is extremely bad; the invention takes the floor design of weak current boxes arranged on the interlayer as a unit of weak current wells, hangs the weak current boxes in the weak current wells close to the upper floor by a pressure bearing rope and a rotating shaft, arranges a weak current room at the weak current well of the upper floor for the maintenance personnel to perform daily maintenance on the weak current boxes, only leaves a channel for lifting the weak current boxes between the weak current room and the lower floor of the weak current well, the rest parts are separated, and additionally arranges a maintenance channel for the maintenance of the weak current wells of the lower floor, which is irrelevant to the technical problem to be solved by the invention, so the pressure bearing rope is not taken into consideration in the invention, the winding of the pressure bearing rope on the rotating shaft is controlled by the rotation of the rotating shaft, and the lifting of the weak current boxes is controlled, the rotation of the rotating shaft is driven by a rotary power device, the rotary power device is a motor, in order to control the motion path of the weak current box, a slide block is arranged on the side surface of the weak current box body, a slide way is arranged on the inner wall of the weak current well, the slide block is embedded into a track of the slide way, the guide direction of the slide way is along the vertical direction of the weak current well, the weak current box body can move along the guide direction of the slide way through the slide block, the position of the weak current well at the lower floor is provided with a fire extinguishing device, the fire extinguishing device is embedded into the side wall of the lower half part of the weak current well to be a part of the weak current well, the fire extinguishing device is isolated from the lower floor except the position of the weak current box in the weak current room, and can be opened along with the descending of the weak current box body, so that when a fire is discovered, the monitoring room can convey the weak current box from the upper weak current room to the, the top of the fire extinguishing device is contacted with the bottom end of the slideway, the slide block on the side surface of the weak current box body is contacted with the top of the fire extinguishing device when moving to the bottom end of the slideway, the fire extinguishing device is started by the opening structure of the fire extinguishing device triggered by the downward pressing of the weight of the weak current box body, the fire extinguishing material in the fire extinguishing device adopts liquid carbon dioxide, when the weak current box body descends, the fire extinguishing device is started, the liquid carbon dioxide is sprayed out from the outlet of the fire extinguishing device due to the pressure difference to release carbon dioxide gas and absorb heat to achieve the purpose of fire extinguishing, the gaseous carbon dioxide on the lower floor and the smoke generated by fire extinguishing can only flow upwards through the opening of the weak current box and can be diffused into the upper weak current room and then diffused outwards, the fire extinguishing is fast, the burning time is short, and the diffusion path is limited, so most of the smoke can, the influence of flue gas to external world when having reduced to put out a fire, through the weak current case that goes up and down in the weak current well, effectually arrange the weak current case in different spaces, on the basis of quick timely processing weak current case condition of a fire, the influence outside the weak current well falls to the minimum.
Further, the upper surface of light current box is equipped with the reducing pipe, it is big to go up the mouth of pipe that the reducing pipe is close to light current box one side, it is little to keep away from one side pass of light current box, go up reducing pipe and light current box upper surface fixed connection and with the inside intercommunication of light current box, the lower surface of light current box is equipped with down the reducing pipe, the mouth of pipe that the reducing pipe is close to light current box one side down is little, it is big to keep away from the mouth of pipe of light current box one side, lower reducing pipe and light current box lower surface fixed connection and with the inside intercommunication of light current box, the upper surface of light current box still is equipped with a plurality of air vents, the reducing pipe is central symmetric distribution above the air vent. The shape of the lower reducing pipe enables the pipe diameter of the lower reducing pipe to be gradually reduced from bottom to top, air flowing from the outside of the lower reducing pipe to the inside of the weak current box can be compressed and cooled through a narrow pipe effect, the narrow pipe effect utilizes the principle that the air can be cooled through compression, the lower reducing pipe enables the air entering the inside of the weak current box to be compressed to a certain degree through changing the pipe diameter, so that the temperature is lower, the flowing air is cooled through the narrow pipe effect, on one hand, the high cost of a compressor is avoided, on the other hand, the compressor is inconvenient to install because the weak current well is positioned inside a building, the upper reducing pipe also cools a part of gas discharged from the inside of the weak current box through the same principle, the environment temperature is prevented from being overhigh, and the ventilation volume of only adopting the upper reducing pipe and the lower reducing pipe for ventilation is smaller, so a plurality of vent holes are further arranged on the upper surface of the weak current box, the invention reduces the temperature in the weak current box body and the environment through the narrow tube effect, and effectively reduces the probability of fire caused by overhigh temperature of the weak current box body and the environment.
Further, the reducing pipe includes the body down, and the mouth of pipe that the body kept away from weak current box one side is equipped with the fan, fan and body inner wall fixed connection, the body is close to the mouth of pipe of one side of weak current box and the lower fixed surface of weak current box is connected to inside and the inside intercommunication of weak current box of body. Because the weak current well is in the better space of a closure, so air mobility wherein is relatively poor, and only rely on the natural flow of air to carry out the cooling effect and can not reach better level in the weak current well, so the mouth of pipe installation fan in the reducing pipe drives the air in the weak current well and flows, also helps the air to enter the weak current box along reducing pipe down and flows along the path that upper reducing pipe and air vent flow the weak current box, so that the effect of narrow tube effect reaches better level simultaneously.
Furthermore, extinguishing device includes the device shell, and the top of the roof of device shell is equipped with the push-down subassembly that can descend along with the light current box body, and the push-down subassembly runs through the inside that the roof of device shell extends to the device shell, and the inside of device shell is equipped with the high-pressure jar body, and the top of the high-pressure jar body is equipped with the head assembly that can open through pushing down, the bottom of push-down subassembly and the top fixed connection of head assembly, the side of device shell are equipped with the spout that link up the lateral wall of device shell, are equipped with the spray tube between spout and the head assembly, and the one end and the spout fixed connection of spray tube, the other end and the side fixed connection of head assembly to spout, spray tube, the inside intercommunication of head assembly. The pressing component and the head assembly form an opening structure for opening the fire extinguishing device, liquid carbon dioxide is filled in the high-pressure tank body, the outer surface of the high-pressure tank body is protected by the device shell, and as the high-pressure tank body and the head assembly are both positioned in the device shell, therefore, a pressing component communicated with the inside of the device shell is required to be arranged outside the device shell to bear the weight of the descending weak current box body, the weight of the weak current box body enables the pressing component to be pressed downwards, and presses the opener head assembly in the pressing process, the liquid carbon dioxide in the high-pressure tank body is sprayed out from the nozzle along the spray pipe due to the change of pressure difference, the carbon dioxide sprayed out from the nozzle acts on the weak current box body, the oxygen is isolated to block combustion, simultaneously a large amount of heat is absorbed to reduce the temperature of the weak current box body and the environment, when the weak current box is in a fire condition, the combustion is effectively blocked, and the weak current circuit is protected as far as possible.
Furthermore, a siphon is arranged in the high-pressure tank body, the upper end of the siphon is fixedly connected with the bottom of the head assembly, the lower end of the siphon extends to the bottom end of the interior of the high-pressure tank body, and the head assembly, the siphon and the interior of the high-pressure tank body are communicated. Because the liquid carbon dioxide in the high-pressure tank body is sprayed out by means of the pressure difference, after the liquid carbon dioxide is sprayed out for a certain time, the internal and external pressure differences tend to be in a more balanced state, so that the residual liquid carbon dioxide in the high-pressure tank body cannot be effectively continuously sprayed out, the siphon pipe is extended to the bottom in the high-pressure tank body by adopting a mode of adding the siphon pipe, the relatively complete and effective spraying of the liquid carbon dioxide in the high-pressure tank body is realized by the siphon action, and the carbon dioxide in the high-pressure tank body cannot be remained more.
Further, the machine head assembly comprises a machine head shell, a duckbill plate is arranged above the machine head shell and comprises a transverse plate and an inclined plate, a torsion spring is arranged in an included angle between the transverse plate and the inclined plate, the included angle between the transverse plate and the inclined plate is fixed through the torsion spring, a fixed block is arranged at the end part of the transverse plate and is fixedly connected with the end part of the transverse plate, a top block is arranged at the end part of the inclined plate and is fixedly connected with the end part of the inclined plate, a lower opening communicated with a siphon pipe is formed in the lower surface of the machine head shell, a pressure-bearing sealing block capable of completely plugging the lower opening is arranged above the lower opening, a lower support rod fixedly connected with the upper surface of the pressure-bearing sealing block is arranged above the pressure-bearing sealing block, an upper support rod is arranged above the lower support rod, one end of the upper support rod is fixedly connected with the upper surface of the pressure-bearing sealing, be equipped with the second pressure spring between the up end of lower support bar and the inner wall at the top of head shell, the one end of second pressure spring and the up end fixed connection of lower support bar, the inner wall fixed connection at the other end and the top of head shell, the side opening that has the intercommunication spray tube is opened to the side of head shell, and open-sided position is higher than the upper surface of pressure-bearing sealing block. The duckbilled board that head of a tractor shell top set up is drawn close to the diaphragm under the effect of push down subassembly pressure, ejector pad upward movement drives the bracing piece upward displacement simultaneously, the space of going up the bracing piece when running through the fixed block is enough big, can not influence the ascending displacement of bracing piece, it drives the ascending displacement of lower support rod to go up the bracing piece, the upper support rod drives the sealed piece upward displacement of pressure-bearing, when the sealed piece displacement of pressure-bearing surpasses the side opening, lower opening and side opening intercommunication, the atmospheric pressure difference between the internal portion of high-pressure tank and the external world drives to balanced direction after the intercommunication, the internal liquid carbon dioxide gasification of high-pressure tank spouts from side opening, live the internal liquid carbon dioxide of high-pressure tank through the effectual suppression of head of a tractor head assembly, and in time release when needs, effectively accomplished blockade and release to the internal material.
Further, the lower pressing component comprises an upper pressing plate, the upper pressing plate is located above the top wall of the device shell, a lower pressing plate embedded into the top wall is arranged on the lower surface of the top wall of the device shell, a connecting rod is arranged between the upper pressing plate and the lower pressing plate, one end of the connecting rod is fixedly connected with the lower surface of the upper pressing plate, the other end of the connecting rod penetrates through the top wall of the device shell and is fixedly connected with the upper surface of the lower pressing plate, a first pressure spring is arranged between the lower surface of the upper pressing plate and the upper surface of the top wall of the device shell, one end of the first pressure spring is fixedly connected with the lower surface of the upper pressing plate. Under conventional state, first pressure spring supports and live the top board and makes the holding down plate lift up, and when the top board was pushed down by the light current box, first pressure spring was compressed, and the connecting rod promoted the holding down plate downstream, has realized not influencing extinguishing device under the conventional state to the drive opens extinguishing device's purpose when the light current box descends.
Furthermore, the slider includes two limit sliders, and two limit sliders are along the central line symmetric distribution of the side of light current box, are equipped with the dog between two limit sliders, and the dog is located the top of limit slider and with limit slider fixed connection, and the clearance between two limit sliders is greater than the width of top board, the dog can promote the top board and descend when light current box descends. The weak current box body can be more completely immersed into carbon dioxide gas released by the fire extinguishing device only by deepening the descending of the weak current box body, and if the fire extinguishing device is opened by using pressure provided by the integral slide blocks, the weak current box body cannot descend to a position deep enough, so that fire extinguishing materials are wasted.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
(1) the light current box body is controlled to lift through winding and releasing of the pressure bearing cable, the outlet of the fire extinguishing device is opened by the weight applied to the fire extinguishing device when the light current box body descends, the fire extinguishing device is opened to achieve the purpose of fire extinguishing, the light current box is effectively placed in different spaces through lifting the light current box in the light current well, and on the basis of quickly and timely processing the fire condition of the light current box, the influence on the outside of the light current well is reduced to the minimum.
(2) The narrow tube effect formed by the upper reducing tube and the lower reducing tube reduces the temperature in the weak current box body and the environment, and effectively reduces the probability of fire caused by overhigh temperature of the weak current box body and the environment.
(3) The fan is installed at the pipe orifice of the reducing pipe to drive air in the weak current well to flow, and meanwhile, the fan also helps air to enter the weak current box body along the lower reducing pipe and flow along the path of the upper reducing pipe and the vent hole flowing out of the weak current box body, so that the effect of the narrow pipe effect reaches a better level.
(4) The siphon pipe extends to the bottom in the high-pressure tank body, and the complete effective ejection of the liquid carbon dioxide in the high-pressure tank body is realized through the siphon effect, so that the carbon dioxide in the high-pressure tank body is not remained.
(5) Adopt the mode of limit slider and dog combination, reserve the space in the middle of two limit sliders for the light current box can descend to deeper position, makes the fire control effect better.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a weak current box of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the fire extinguishing apparatus of the present invention;
figure 4 is a schematic view of the head assembly of the present invention;
FIG. 5 is a bottom view of the weak current case of the present invention;
1-weak current box body, 2-upper reducing pipe, 3-slide block, 4-lower reducing pipe, 5-slide way, 6-motor, 7-rotating shaft, 8-pressure bearing rope, 9-fire extinguishing device, 11-vent hole, 31-edge slide block, 32-stop block, 41-pipe body, 42-fan, 91-device shell, 92-pressing component, 93-head assembly, 94-nozzle, 95-nozzle, 96-high pressure tank body, 97-siphon, 921-upper pressing plate, 922-connecting rod, 923-first pressure spring, 924-lower pressing plate, 931-duckbilled plate, 932-torsion spring, 933-top block, 934-fixing block, 935-bumper, 936-second pressure spring, 937-side opening, 938-pressure bearing sealing block, 939-lower support bar, 9310-upper support bar, 9311-head housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in figures 1-4, a liftable weak current box and a weak current well comprise a cuboid weak current well with a hollow interior and a weak current box body 1 positioned in the weak current well, wherein the weak current box body 1 is provided with two symmetrical side surfaces which are contacted with the inner wall of the weak current well, the side surfaces of the weak current box body 1 contacted with the inner wall of the weak current well are respectively provided with a slide block 3 protruding out of the surface of the weak current box body 1, the inner wall of the weak current well is provided with a slide way 5 corresponding to the slide block 3, the bottom of the weak current well is also provided with a fire extinguishing device 9 with an opening structure at the top end, the top of the fire extinguishing device 9 is contacted with the bottom end surface of the slide way 5, a rotating shaft 7 is arranged above the top wall of the weak current well, a pressure bearing cable 8 is arranged on the rotating shaft 7, one end of the pressure bearing cable 8 is fixedly connected with the slide block 3, the other end of the pressure bearing, the rotation of the rotating shaft 7 can drive the pressure bearing rope 8 to be wound and released, the weak current box body 1 is controlled to lift through the winding and the releasing of the pressure bearing rope 8, and the fire extinguishing device 9 is opened by pressing the top end of the fire extinguishing device 9 through the sliding block 3 on the side face of the weak current box body 1 in the descending process.
In practical application, a monitoring system or an existing smoke sensor detects the condition of fire between weak electricity, a monitoring room controls a rotary power device at a corresponding position to be opened, the rotary power device adopts a motor 6 with a Y-series model, the motor 6 drives a rotating shaft 7 to rotate to unwind a pressure-bearing cable 8, the pressure-bearing cable 8 is extended after unwinding and enables a weak electricity box body 1 to descend, two sets of pressure-bearing cables 8 are required to be arranged for keeping integral balance, the pressure-bearing cables 8 are symmetrically distributed on two sides of the weak electricity box body 1 and are wound on the same rotating shaft 7 so as to achieve the purpose of synchronous winding and releasing, the descending track of the weak electricity box body 1 vertically descends along the guiding direction of a slideway 5 and is contacted with a fire extinguishing device 9 after moving to the lower end part of the slideway 5, the fire extinguishing device 9 is opened through the weight of the weak electricity box body 1, the fire extinguishing material in the fire extinguishing device 9 adopts liquid carbon dioxide, can be effectively applicable to the circuit in the fire, just should consider the influence of the lift of weak current box 1 to the weak current line when arranging the weak point line in this embodiment, the distribution of weak current line should not obstruct the lift of weak current box 1, and the counter weight of weak current box 1 should be adjusted to the weight that can effectively open extinguishing device 9 when descending simultaneously.
In view of this, the fire extinguishing apparatus 9 includes an apparatus casing 91, a pressing assembly 92 capable of pressing down with the descending of the weak current box 1 is arranged above the top wall of the apparatus casing 91, the pressing assembly 92 extends into the apparatus casing 91 through the top wall of the apparatus casing 91, a high-pressure tank 96 is arranged inside the apparatus casing 91, a head assembly 93 capable of being opened by pressing down is arranged at the top of the high-pressure tank 96, the bottom end of the pressing assembly 92 is fixedly connected with the top end of the head assembly 93, a nozzle 94 penetrating through the side wall of the apparatus casing 91 is arranged on the side surface of the apparatus casing 91, a nozzle 95 is arranged between the nozzle 94 and the head assembly 93, one end of the nozzle 95 is fixedly connected with the nozzle 94, the other end is fixedly connected with the side surface of the head assembly 93, and the nozzle 94, the nozzle 95 and the head assembly 93 are communicated with. A siphon pipe 97 is arranged in the high-pressure tank 96, the upper end of the siphon pipe 97 is fixedly connected with the bottom of the head assembly 93, the lower end of the siphon pipe 97 extends to the bottom end of the interior of the high-pressure tank 96, and the head assembly 93, the siphon pipe 97 and the interior of the high-pressure tank 96 are communicated. The head assembly 93 comprises a head shell 9311, a duckbilled plate 931 is arranged above the head shell 9311, the duckbilled plate 931 comprises a transverse plate and an inclined plate, a torsion spring 932 is arranged in an included angle between the transverse plate and the inclined plate, the transverse plate and the inclined plate are fixed through the torsion spring 932, a fixed block 934 is arranged at the end part of the transverse plate, the fixed block 934 is fixedly connected with the end part of the transverse plate, a top block 933 is arranged at the end part of the inclined plate, the top block 933 is fixedly connected with the end part of the inclined plate, a lower opening communicated with a siphon 97 is formed in the lower surface of the head shell 9311, a pressure-bearing sealing block 938 capable of completely sealing the lower opening is arranged above the lower opening, a lower support rod 939 fixedly connected with the upper surface of the pressure-bearing sealing block 938 is arranged above the pressure-bearing sealing block 938, an upper support rod 9310 is arranged above the lower support rod 939, one end of the upper support rod 9310 is, the external diameter of lower support rod 939 is greater than the external diameter of upper support rod 9310, be equipped with second pressure spring 936 between the inner wall at the top of lower support rod 939's up end and head shell 9311, the one end of second pressure spring 936 and the up end fixed connection of lower support rod 939, the inner wall fixed connection at the other end and head shell 9311's top, open the side opening 937 that has intercommunication spray tube 95 in the side of head shell 9311, the position of side opening 937 is higher than the upper surface of pressure-bearing seal block 938. The lower pressure subassembly 92 includes top board 921, top board 921 is located the top of device shell 91 roof, the lower surface of the roof of device shell 91 is equipped with the inside holding down plate 924 of embedding roof, be equipped with connecting rod 922 between top board 921 and the holding down plate 924, the one end of connecting rod 922 and the fixed surface of top board 921 are connected, the other end runs through the top of device shell 91 and the fixed surface of holding down plate 924 is connected, be equipped with first pressure spring 923 between the lower surface of top board 921 and the upper surface of the roof of device shell 91, the one end of first pressure spring 923 and the fixed surface of top board 921 are connected, the other end and the roof fixed connection of device shell 91. The slider 3 includes two limit sliders 31, and two limit sliders 31 are equipped with dog 32 along the central line symmetric distribution of the side of light current box 1 between two limit sliders 31, dog 32 be located the top of limit slider 31 and with limit slider 31 fixed connection, the width that the clearance between two limit sliders 31 is greater than top board 921, dog 32 can promote top board 921 when light current box 1 descends and descend. Still inserted the bumper 935 in the fixed block, bumper 935 runs through last bracing piece and is the slant decurrent direction slope outside from last bracing piece to the fixed block, the part that bumper 935 extrudes the fixed block is connected with the connection rope, connect rope one end and bumper 935 fixed connection, the other end and holding down plate 924 fixed connection, connect the rope and upwards drag bumper 935 under the state that holding down plate 924 lifts up, make inserting in fixed block 934 that bumper 935 can be complete, when holding down plate 924 moved down, bumper 935 can be at self action of gravity down roll-off fixed block 934 release last bracing piece 9310.
A weak current well for experiments is built, the weak current box body 1 is ignited manually, four groups of weak current wells are used for experiments, the first group is arranged in a common weak current room, the fire intensity is large, a fire extinguisher is held by a fire fighter to extinguish the fire, the second group adopts the weak current box and the weak current well and controls the weak fire to extinguish the fire, the third group adopts the weak current box and the weak current well to extinguish the fire in the large fire, the fourth group adopts the weak current box to extinguish the fire in the deflagration fire, and the fire extinguishing efficiency and the space size occupied by the representative hazardous substance smoke outside the weak current room are recorded.
From the data recorded in the experiment, the following data can be obtained: firefighters in the first group are driven to the site from 1km away after acquiring fire information and extinguish the fire within 10min, and 86% of the space outside the weak electricity room is covered by smoke; the second group starts the motor 6 after obtaining the fire information and extinguishes the fire within 3min, and 3.9% of the space outside the weak electricity room is covered by the smoke; the third group starts the motor 6 after obtaining the fire information and extinguishes the fire within 5min, and 9% of the space outside the weak electricity room is covered by the smoke; the fourth group starts the motor 6 after obtaining the fire information and extinguishes the fire within 12min, and 23% of the space outside the weak electricity room is covered by the smoke; according to the data, the weak current box can be lifted in the weak current well, the weak current box is effectively placed in different spaces, and the influence on the outside of the weak current well is minimized on the basis of quickly and timely processing the fire of the weak current box.
Example 2:
as shown in fig. 1 to 5, on the basis of embodiment 1, an upper reducing pipe 2 is disposed on an upper surface of the weak current box 1, a pipe orifice of the upper reducing pipe 2 close to one side of the weak current box 1 is large, a pipe orifice of one side far away from the weak current box 1 is small, the upper reducing pipe 2 is fixedly connected with an upper surface of the weak current box 1 and is communicated with the inside of the weak current box 1, a lower reducing pipe 4 is disposed on a lower surface of the weak current box 1, a pipe orifice of the lower reducing pipe 4 close to one side of the weak current box 1 is small, a pipe orifice of one side far away from the weak current box 1 is large, the lower reducing pipe 4 is fixedly connected with a lower surface of the weak current box 1 and is communicated with the inside of the weak current box 1, a plurality of vent holes 11 are further disposed on the upper surface of the weak current box 1, and the vent holes. The lower reducing pipe 4 comprises a pipe body 41, a fan 42 is arranged at the pipe orifice of one side, away from the weak current box body 1, of the pipe body 41, the fan 42 is fixedly connected with the inner wall of the pipe body 41, the pipe orifice of one side, close to the weak current box body 1, of the pipe body 41 is fixedly connected with the lower surface of the weak current box body 1, and the pipe body 41 is communicated with the interior of the weak current box body 1.
On the basis, the shape of the lower reducing pipe 4 gradually reduces the pipe diameter of the lower reducing pipe 4 from bottom to top, and the air flowing from the outside of the lower reducing pipe 4 into the weak current box body 1 can be compressed and cooled by the narrow pipe effect, the narrow pipe effect is based on the principle that the air can be cooled by being compressed, the lower reducing pipe 4 changes the pipe diameter to ensure that the air entering the weak current box body 1 is compressed to a certain degree, so that the temperature is lower, the flowing air is cooled by the narrow pipe effect, on one hand, the high cost of the compressor is avoided, on the other hand, the compressor is inconvenient to install because the weak current well is positioned in the building, the upper reducing pipe 2 also adopts the same principle to cool part of the air discharged from the weak current box, the environment temperature is prevented from being too high, and the ventilation volume by only adopting the upper reducing pipe 2 and the lower reducing pipe 4 to ventilate is smaller, therefore, the upper surface of the weak current box body 1 is also provided with a plurality of vent holes 11 so as to avoid insufficient use of gas inlets and outlets when the ventilation volume is increased, the driving of the fan 42 ensures the gas flow direction in the invention, the temperature of the weak current box body 1 and the environment is reduced through the narrow tube effect, and the probability of fire occurrence is reduced through a cooling mode.
Compared with the common weak current box arranged in the weak current well, the temperature and the environment temperature in the weak current box and the environment box are continuously measured, and the result shows that the temperature in the weak current box body 1 is reduced by 6.7 ℃ on average compared with the common weak current box, the environment temperature is reduced by 3.4 ℃ on average compared with the common weak current box, and the invention can effectively reduce the probability of fire occurrence by reducing the temperature.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A liftable weak current box and a weak current well are characterized by comprising a rectangular weak current well with a hollow inner part and a weak current box body (1) positioned in the weak current well, wherein the weak current box body (1) is provided with two symmetrical side surfaces which are contacted with the inner wall of the weak current well, the side surfaces of the weak current box body (1) contacted with the inner wall of the weak current well are respectively provided with a sliding block (3) protruding out of the surface of the weak current box body (1), the inner wall of the weak current well is provided with a sliding way (5) corresponding to the sliding block (3), the bottom of the weak current well is also provided with a fire extinguishing device (9) with an opening structure at the top end, the top of the fire extinguishing device (9) is contacted with the bottom end surface of the sliding way (5), a rotating shaft (7) is arranged above the top wall of the weak current well, a pressure bearing cable (8) is arranged on the rotating shaft (7), one end of the pressure bearing cable (8, the middle part of the box body is wound on a rotating shaft (7), the rotating shaft (7) is driven by a rotary power device to rotate, the rotating shaft (7) can drive a pressure-bearing rope (8) to be wound and released, the lifting of the weak current box body (1) is controlled by the winding and releasing of the pressure-bearing rope (8), and the fire extinguishing device (9) is opened by pressing an opening structure at the top end of the fire extinguishing device (9) through a sliding block (3) on the side surface of the weak current box body (1) in the descending process; the upper surface of light current box (1) is equipped with reducing pipe (2), it is big to go up reducing pipe (2) and be close to the mouth of pipe of light current box (1) one side, the side mouth of pipe of keeping away from light current box (1) is little, it is connected and communicate with light current box (1) inside with fixed surface to go up reducing pipe (2) and light current box (1), the lower surface of light current box (1) is equipped with reducing pipe (4) down, the mouth of pipe that lower reducing pipe (4) are close to light current box (1) one side is little, the mouth of pipe of keeping away from light current box (1) one side is big, reducing pipe (4) and light current box (1) lower surface fixed connection down and with light current box (1) inside intercommunication, the upper surface of light current box (1) still is equipped with a plurality of air vents (11), reducing pipe (2) are central symmetric distribution more than air vent (11).
2. The liftable weak current box and weak current well as the liftable weak current box and the liftable weak current well are characterized in that the lower reducing pipe (4) comprises a pipe body (41), a fan (42) is arranged at a pipe opening of one side of the pipe body (41), which is far away from the weak current box body (1), the fan (42) is fixedly connected with the inner wall of the pipe body (41), a pipe opening of one side of the pipe body (41), which is close to the weak current box body (1), is fixedly connected with the lower surface of the weak current box body (1), and the interior of the pipe body (41) is communicated with the interior of the weak current box body (1).
3. The liftable weak electricity box and weak electricity well according to claim 1, wherein the fire extinguishing device (9) comprises a device shell (91), a pressing component (92) capable of pressing down along with the descending of the weak electricity box body (1) is arranged above the top wall of the device shell (91), the pressing component (92) penetrates through the top wall of the device shell (91) and extends into the device shell (91), a high-pressure tank body (96) is arranged inside the device shell (91), a head assembly (93) capable of being opened through pressing down is arranged on the top of the high-pressure tank body (96), the bottom end of the pressing component (92) is fixedly connected with the top end of the head assembly (93), a nozzle (94) penetrating through the side wall of the device shell (91) is arranged on the side surface of the device shell (91), a nozzle (95) is arranged between the nozzle (94) and the head assembly (93), and one end of the nozzle (95) is fixedly connected with the nozzle (94), the other end is fixedly connected with the side surface of the head assembly (93), and the nozzle (94), the spray pipe (95) and the head assembly (93) are communicated with each other.
4. The liftable weak electricity box and weak electricity well of claim 3, characterized in that a siphon (97) is arranged inside the high pressure tank (96), the upper end of the siphon (97) is fixedly connected with the bottom of the head assembly (93), the lower end of the siphon extends to the bottom end of the inside of the high pressure tank (96), and the head assembly (93), the siphon (97) and the inside of the high pressure tank (96) are communicated.
5. The liftable weak current box and weak current well of claim 4, wherein the head assembly (93) comprises a head casing (9311), a duckbill plate (931) is arranged above the head casing (9311), the duckbill plate (931) comprises a transverse plate and an inclined plate, a torsion spring (932) is arranged in an included angle between the transverse plate and the inclined plate, the included angle between the transverse plate and the inclined plate is fixed through the torsion spring (932), a fixing block (934) is arranged at the end part of the transverse plate, the fixing block (934) is fixedly connected with the end part of the transverse plate, a top block (933) is arranged at the end part of the inclined plate, the top block (933) is fixedly connected with the end part of the inclined plate, a lower opening communicated with a siphon (97) is arranged on the lower surface of the head casing (9311), a pressure-bearing sealing block (938) capable of completely blocking the lower opening is arranged above the lower opening, a lower support rod (939) fixedly connected with the upper surface of the pressure-bearing sealing block (938, the top of lower support pole (939) is equipped with bracing piece (9310), the one end of going up bracing piece (9310) and the last fixed surface of pressure-bearing seal block (938) are connected, and the other end runs through fixed block (934) and top block (933) lower surface articulated, the external diameter of lower support pole (939) is greater than the external diameter of last bracing piece (9310), is equipped with second pressure spring (936) between the up end of lower support pole (939) and the inner wall at the top of head shell (9311), the one end of second pressure spring (936) and the up end fixed connection of lower support pole (939), the inner wall fixed connection at the top of the other end and head shell (9311), open side opening (937) that have intercommunication spray tube (95) to the side of head shell (9311), the position of side opening (937) is higher than the upper surface of pressure-bearing seal block (938).
6. The liftable weak current box and weak current well as claimed in claim 3, lower pressure subassembly (92) include top board (921), top board (921) are located the top of device shell (91) roof, the lower surface of the roof of device shell (91) is equipped with inside holding down plate (924) of embedding roof, be equipped with connecting rod (922) between top board (921) and holding down plate (924), the one end of connecting rod (922) and the lower fixed surface of top board (921) are connected, the other end runs through the roof of device shell (91) and the last fixed surface of holding down plate (924) is connected, be equipped with first pressure spring (923) between the lower surface of top board (921) and the upper surface of the roof of device shell (91), the one end of first pressure spring (923) and the lower fixed surface of top board (921), the other end and the roof fixed connection of device shell (91).
7. The liftable weak current box and the weak current well are characterized in that the sliding blocks (3) comprise two edge sliding blocks (31), the two edge sliding blocks (31) are symmetrically distributed along the central line of the side surface of the weak current box body (1), a stop block (32) is arranged between the two edge sliding blocks (31), the stop block (32) is positioned at the top end of the edge sliding block (31) and is fixedly connected with the edge sliding block (31), the gap between the two edge sliding blocks (31) is larger than the width of the upper pressure plate (921), and the stop block (32) can push the upper pressure plate (921) to descend when the weak current box body (1) descends.
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| CN201910842394.8A CN110556720B (en) | 2019-09-06 | 2019-09-06 | Liftable weak current case and weak current well |
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| CN201910842394.8A CN110556720B (en) | 2019-09-06 | 2019-09-06 | Liftable weak current case and weak current well |
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| CN113067268B (en) * | 2021-03-24 | 2022-06-07 | 深圳市光辉电器实业有限公司 | Self-extinguishing and self-cleaning electric power cabinet and use method thereof |
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| CN2853106Y (en) * | 2005-11-11 | 2007-01-03 | 谢宝院 | Emergency device for fire control |
| CN202870864U (en) * | 2012-10-31 | 2013-04-10 | 新疆中钜电子科技有限公司 | A positioning orientation and security facility identification apparatus used in sealed environment |
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