CN108245808A - A kind of public transport fire extinguishing system - Google Patents

Abstract

The invention provides a bus fire extinguishing system. The bus fire extinguishing system comprises a bus body, a driver's seat is arranged on the front side of the bus body, side seats are arranged in the middle area of the bus and are backed against the inner wall; low-pressure liquid storage tank; the liquid outlet of the low-pressure liquid storage tank is connected to the upper pipeline system and the lower pipeline system through the fire-fighting liquid outlet pipe. A plurality of rotary nozzles for fire extinguishing are arranged on the upper part; the lower pipeline system includes a lower pipeline arranged at the bottom area of the side wall of the bus body, and a plurality of direct nozzles for fire extinguishing are arranged on the lower pipeline; Valve; the control hand brake of the control valve is arranged on the inner side wall of the bus body positioned at the driver's seat side. The fire extinguishing system has a large injection dose of fire extinguishing agent and good fire extinguishing effect, and there is no dead angle for the whole bus to extinguish fire.

Description

A bus fire extinguishing system

technical field

The invention relates to a bus fire extinguishing system.

Background technique

At present, the safety facilities equipped on domestic buses are mainly divided into the following parts:

safety hammer. In the event of a fire or a public safety accident, passengers can use a safety hammer to smash the glass to escape.

Portable fire extinguisher. In the event of an incipient fire, a fire extinguisher can be used to extinguish the fire.

Pulse type dry powder fire extinguisher in the engine room. The fire extinguisher is mainly used to automatically spray dry powder fire extinguishing agent to extinguish the fire when the engine is on fire.

Driver monitoring device. A monitoring camera is installed above the rear door of the passenger car, which can monitor a part of the space in the passenger car.

Alarm system. Buses in some parts of the country are equipped with alarms, and passengers can press the alarm button to report to the police in the event of a safety accident.

At present, the bus fire extinguishing system is generally driven by the power source brought by the electric pump driven by the bus battery, which often results in insufficient power source, and the small spraying range of fire fighting fluid and the small amount of spraying lead to technical problems of poor fire extinguishing efficiency of the bus fire extinguishing system , is a technical problem to be solved urgently in this field.

Contents of the invention

The purpose of the present invention is to provide a bus fire extinguishing system to solve the lack of power source caused by using the bus battery to drive the electric pump in the current bus fire extinguishing system, as well as the small spraying range and small spraying volume of the fire fighting fluid, which leads to the fire extinguishing of the bus fire extinguishing system. Technical problems with poor efficiency.

In order to solve the above-mentioned technical problems, the present invention provides a bus fire extinguishing system, which includes a bus body, a driver's seat is arranged on the front side of the bus body, and a side seat with a back against the inner wall is arranged in the middle area of the bus; the bottom of the side seat Set up a low-pressure liquid storage tank for storing fire fighting fluid;

The liquid outlet of the low-pressure liquid storage tank is connected to the upper pipeline system and the lower pipeline system through the fire-fighting liquid outlet pipe, wherein the upper pipeline system includes a roof pipeline arranged on the top of the bus body, and the roof A plurality of rotary injectors for fire extinguishing are arranged on the pipeline; the lower pipeline system includes a lower pipeline arranged on the bottom area of the side wall of the bus body, and a plurality of straight nozzles for fire extinguishing are arranged on the lower pipeline;

A control valve is set on the fire outlet pipe;

The control hand brake of the control valve is arranged on the inner side wall of the bus body on the side of the driver's seat.

Further, it also includes:

A fire-fighting reel arranged behind the driver's seat; wherein, the liquid inlet pipe of the fire-fighting reel is connected to the fire-fighting liquid outlet pipe between the liquid outlet of the low-pressure liquid storage tank and the control valve superior.

Further, the low-pressure liquid storage tank includes no more than 70% of its volume of firefighting fluid and no less than 30% of its volume;

After the gas is filled in the low-pressure liquid storage tank, the pressure is 1.2Mpa;

One end of the low-pressure liquid storage tank is provided with an inflatable pipe connected to the gas in it; the inflatable pipe is connected to the pipeline between the liquid inlet end of the fire-fighting liquid outlet pipe and the control valve;

The bottom of the side seat is provided with an openable liquid storage tank box; the liquid storage tank box is located on the outer side of the side seat and connected to the bottom surface of the bus body through a plurality of hinged seats.

Further, the rotary injector includes:

A liquid inlet spindle pipe connected to the liquid inlet pipe, and a first bearing seat is arranged outside the liquid outlet end of the liquid inlet spindle pipe;

a bearing arranged on the first bearing housing;

A bearing sleeve arranged outside the bearing, wherein a sealing retaining ring is arranged between the bearing sleeve and the bearing;

A bottom core arranged outside the liquid outlet end of the liquid inlet spindle tube, the bottom core is connected to the bearing sleeve through a connecting sleeve; a plurality of square liquid spray ports are arranged at predetermined distances on the connecting sleeve;

The mist swirl block is arranged on the outer ring side of the connecting sleeve, and the mist swirl block is provided with a plurality of water outlet chute corresponding to the square liquid spray port;

The water outlet chute includes a blocking surface facing the square liquid spray port; a liquid separation groove is arranged on the blocking surface.

Further, the straight nozzle includes:

The nozzle body, an X-shaped rotary core is arranged in the nozzle body, and the spray angle of the nozzle body is 30 degrees to 120 degrees;

The X-shaped rotary core is a first semi-disc core and a second semi-disc core comprising a semi-disc cutter body structure; the straight edges of the first semi-disc core and the second semi-disc core follow the Oblique fixed connection at a predetermined angle, the arc sides of the first half-disc core and the second half-disc core face outward;

A first notch is provided in the end area of the right-angled side of the first half-disc core;

A second notch is provided in the end area of the right-angled side of the second semi-disc core.

Further, the liquid outlet of the nozzle body is an inner tapered groove structure;

The liquid inlet end of the nozzle body is provided with a connecting thread, and a mounting nut is provided outside the middle area of the nozzle body.

Further, the control valve includes:

Three-piece ball valve, the top of the three-piece ball valve is provided with a switch control rod, and a valve switch pull rod is fixed on the switch control rod;

a brake line fixing plate fixed on the top of the three-piece ball valve and located on the lower side of the switch pull rod;

The end of the gate wire fixing plate is fixed with gate wire inlet holes and gate wire outlet holes corresponding to the left and right ends of the valve switch pull rod;

The three-piece ball valve includes a valve body, a liquid inlet connecting valve piece fixed at the liquid inlet end of the valve body, and a liquid outlet connecting valve piece fixed at the liquid outlet end of the valve body,

The brake line fixing plate includes a first connecting ear plate connected to the liquid inlet connecting valve plate and a second connecting ear plate connected to the liquid outlet connecting valve plate.

Further, the end of the gate line fixing plate is provided with a fixing horizontal plate;

At least two steel wire harness barrels are fixed on the fixed horizontal plate, and the brake wire inlet holes and the brake wire outlet holes are respectively arranged on the steel wire harness barrels; wherein,

The gate wire inlet hole and gate wire outlet hole are in the same plane as the valve switch pull rod.

Further, the control hand brake includes:

The hand brake base, the hand brake base includes a bottom tray and a guardrail ring block set around the bottom tray, and a central axis is set in the central area of the tray;

A wire rope reel that can be rotatably inserted on the central shaft; a plurality of drive holes are set on the top of the wire rope reel, and a first central axis hole with an inner diameter larger than the central shaft is provided in the middle of the wire rope reel;

The hand brake handle inserted on the central shaft can be rotated, and the hand brake handle includes a disk end and a handle end; the middle area of the disk end is provided with a second central shaft hole with an inner diameter larger than the central shaft, so The bottom of the disk end is fixed with a plurality of drive rods for insertion into the drive hole;

The upper cover fastened on the base of the hand brake;

A third central axis hole corresponding to the central axis is provided on the upper cover; a gland is provided on the upper cover, and a fourth central axis hole corresponding to the central axis is set on the gland, and the gland a fastening screw for connecting to the center shaft is arranged on the top;

A wire outlet is fixed outside the guardrail ring block, and a wire inlet hole and a wire outlet hole are arranged on the wire outlet;

A locking hole for locking the steel wire rope wound thereon is arranged on the wire rope reel, and a locking bolt is arranged in the locking hole.

Further, the fire reel includes:

A reel support, the reel support includes a base, and a left mounting support and a right mounting support connected to the base;

The left reel wheel connected on the left mounting support by bearing, and the right reel wheel connected on the right mounting support by bearing, between the left reel wheel and the right reel wheel Fixed connection through the reel connecting rod;

The mandrel installed on the axis of the right mounting support, at least three O-rings are arranged on the end of the mandrel connected to the hose on the fire reel;

A left rolling end cap is set on the left reel wheel, a right rolling end cap corresponding to the left rolling end cap is set on the right reel wheel, and the left rolling end cap is connected to the right rolling end cap. Press the end cover to snap together;

The hose is wound on the connecting rod of the reel, one end of the hose is connected to the mandrel, and the other end is connected to the fire sprinkler.

The length of the hose is 5-50 meters.

Compared with prior art, the beneficial effect of the present invention is:

A bus fire extinguishing system provided by the present invention comprises a bus body, a driver's seat is arranged on the front side of the bus body, and a side seat with a back against the inner wall is arranged in the middle area of the bus; the bottom of the seat is arranged for storing fire fighting liquid A low-pressure liquid storage tank; the liquid outlet of the low-pressure liquid storage tank is connected to the upper pipeline system and the lower pipeline system through the fire-fighting liquid outlet pipe, wherein the upper pipeline system includes a roof that is arranged on the top of the bus body pipeline, on which a plurality of swirl injectors for fire extinguishing are arranged on the top pipeline; the lower pipeline system includes a lower pipeline arranged on the bottom area of the side wall of the bus body, and a plurality of nozzles for fire extinguishing are arranged on the lower pipeline A direct nozzle for fire extinguishing; a control valve is set on the fire outlet pipe; the control hand brake of the control valve is set on the inner wall of the bus body on the side of the driver's seat.

By installing a low-pressure liquid storage tank at the bottom of the side seat, the liquid storage capacity of the firefighting fluid can be greatly increased without affecting the passenger capacity of the bus. On the basis of meeting the high-dose firefighting fluid storage capacity , through the upper pipeline system and the lower pipeline system to spray the fire, the power is sufficient, the injection dose of the fire extinguishing agent is large, and the fire extinguishing effect is good. , the whole does not use bus power and does not use electric power control, does not affect the normal use of the bus, and will not hinder the use of the fire extinguishing system due to bus failure or circuit failure.

The driving source of the fire-fighting equipment in the bus fire-extinguishing system is mainly taken from the air pressure source in the system’s own liquid storage tank, which does not use bus energy and will not affect the energy use of the bus, and the independent energy system, operation more convenient. Moreover, after a fire breaks out in the bus and the power is cut off, it will not affect the system to directly drive the system to implement protection and fire extinguishing by utilizing the stored gas. The gas source in the bus fire extinguishing system is the self-contained gas source of the system, and it can be realized according to the predetermined design of the gas volume required by the fire extinguishing system, breaking through the bottleneck of the limited working power of the existing fire extinguishing system, thus ensuring the spraying intensity of the fire extinguishing system And the effect, and it is absolutely realized on the basis of not affecting the safe driving and operation performance of the original car.

The bus fire extinguishing system provides all-round fire protection for the passengers in the cabin, and wins valuable evacuation and escape time for passengers. The system can respond within 1 second, control the fire within 2 seconds, and extinguish the fire within 3 seconds. The fire-fighting fluid in the low-pressure liquid storage tank of the system adopts an efficient and environmentally friendly multi-functional water-based fire extinguishing agent, which is non-toxic, harmless and non-irritating to the human body, and can quickly dilute toxic smoke. The system has simple structure, convenient installation, beautiful appearance, low price, long service life, and basically does not change the original structure of the vehicle.

The bus fire extinguishing system occupies less space in the bus cabin and has a reasonable layout. Protect the passenger cabin by spraying high-efficiency fire extinguishing agent with large spray angle and low-pressure atomization. Moreover, the system is activated manually by the driver to ensure the reliability of the system activation.

Description of drawings

Fig. 1 schematically shows the partial structural representation of the bus fire extinguishing system of the embodiment of the present invention;

Fig. 2 schematically shows a partial structural view of a bus with a low-pressure liquid storage tank installed in an embodiment of the present invention;

Fig. 3 schematically shows a schematic structural view of a low-pressure liquid storage tank in an embodiment of the present invention;

Fig. 4 schematically shows the structural representation of the rotary injector in the embodiment of the present invention;

Fig. 5 schematically shows a schematic cross-sectional structure diagram of a straight nozzle in an embodiment of the present invention;

Fig. 6 schematically shows a schematic top view of Fig. 5;

Fig. 7 schematically shows a schematic view of the structure of the first semi-disc core of the X-shaped rotary core in the straight nozzle in the embodiment of the present invention;

Fig. 8 schematically shows a schematic structural view of a control valve in an embodiment of the present invention;

Fig. 9 schematically shows a schematic diagram of a partial exploded structure of the control hand brake in the embodiment of the present invention;

Fig. 10 schematically shows a three-dimensional structure schematic diagram of controlling the hand brake in an embodiment of the present invention;

Fig. 11 schematically shows a partial structural view of a fire reel in an embodiment of the present invention;

Fig. 12 schematically shows a schematic view of the mandrel structure of the fire reel in the embodiment of the present invention;

Fig. 13 schematically shows the structure of the fire reel with end caps in the embodiment of the present invention.

Reference signs in the figure:

In Figure 1:

1. Bus body; 101. Side seats; 102. Driver's seat; 2. Low pressure liquid storage tank; 201. Upper pipeline system; 202. Lower pipeline system; 203. Top pipeline; 204. Lower pipeline; 3. Rotary sprinkler; 4. Direct nozzle; 5. Control valve; 6. Control hand brake; 7. Fire reel;

In Figure 2 and Figure 3:

2. Low-pressure liquid storage tank; 221. Fire-fighting liquid; 222. Gas; 223. Fire-fighting liquid outlet pipe; 224. On-off ball valve; 225. Inflatable pipe; 226. Liquid inlet pipe; , liquid storage tank box; 231, hinged seat;

In Figure 4:

301, liquid inlet spindle tube; 311, first bearing seat; 302, bearing; 321, sealing retaining ring; 303, bearing sleeve; 304, bottom core; 305, connecting sleeve; 351, square liquid spray port; Block; 361, outlet chute; 362, liquid separator;

In Figure 5-Figure 7:

401. Nozzle body; 411. Liquid outlet; 412. Connecting thread; 413. Mounting nut; 402. X-shaped rotary core; 421. First semi-disc core; 422. First gap;

In Figure 8:

501, three-piece ball valve; 511, switch control rod, 512, valve switch pull rod, 513, inlet liquid connection valve piece; 514, liquid outlet connection valve piece; 502, gate line fixed plate; 521, fixed horizontal plate; 522, The first connecting ear plate; 523, the second connecting ear plate; 503, the gate line inlet hole; 504, the gate line outlet hole;

In Figure 9 and Figure 10:

601, hand brake base; 611, tray, 612, guardrail ring stopper; 613, central axis; 602, winding wire rope reel; 621, driving hole; 622, first central axis hole; 623, second connecting ear plate; 603, hand brake handle; 631, disc end; 632, handle end; 633, second central axis hole; 604, gland; 605, fastening screw; 606, upper cover; 607, outlet; 671, incoming line Hole; 672, outlet hole;

In Figure 11-Figure 13:

701, left mounting support; 711, left reel wheel; 713, left rolling end cover; 702, right mounting support; 721, right reel wheel; 723, right rolling end cover; 703, reel connecting rod ; 704, mandrel; 741, O-ring; 705, hose; 751, fire nozzle.

Detailed ways

Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

Please refer to Fig. 1-shown in Fig. 13, this bus fire extinguishing system comprises bus body 1, and driver's seat 102 is arranged on the front side of bus body 1, and the side seat 101 that leans against the inner side wall is set in the middle area of bus; The bottom of 101 is provided with a low-pressure liquid storage tank 2 for storing fire-fighting fluid; the liquid outlet of the low-pressure liquid storage tank 2 is connected to the upper pipeline system 201 and the lower pipeline system 202 through the fire-fighting liquid outlet pipe 223, wherein the upper pipeline system 201 Including a top pipeline 203 arranged on the top of the bus body 1, on which a plurality of rotary injectors 3 for fire extinguishing are arranged; the lower pipeline system 202 includes a lower pipeline 204 arranged on the bottom area of the side wall of the bus body 1, The lower pipeline 204 is provided with a plurality of direct spray nozzles 4 for fire extinguishing; the fire control liquid pipe 223 is provided with a control valve 5 ; superior.

By arranging the low-pressure liquid storage tank 2 at the bottom of the side seat 101, the liquid storage volume of the firefighting fluid can be greatly increased without affecting the passenger capacity of the bus basically, and the storage volume of the firefighting fluid meeting the requirement of a high dose of firefighting fluid storage Basically, the upper pipeline system 201 and the lower pipeline system 202 are sprayed to extinguish the fire, the injection dose of the fire extinguishing agent is large, the fire extinguishing effect is good, and there is no dead angle in the fire extinguishing of the whole bus. The hand brake 6 is controlled, and the whole does not use bus power or electric power control, does not affect the normal use of the bus, and will not hinder the use of the fire extinguishing system due to bus failure or circuit failure.

In addition, the bus fire extinguishing system also includes: a fire-fighting reel 7 arranged behind the driver's seat 102; On the fire outlet pipe 223.

By setting the fire reel 7 behind the driver's seat 102, the footprint of the fire reel 7 can be reduced, and when a fire occurs in the bus or outside the bus, the flexible pipe of the fire reel 7 can Spray firefighting fluid to extinguish the fire, which has the effect of a small fire truck. The fire extinguishing is more flexible and the fire extinguishing range is more accurate. Moreover, the liquid inlet pipe on the fire reel 7 is connected to the pipeline on the liquid outlet of the low-pressure liquid storage tank 2 to keep fire fighting. Long-term pressure exists in the hose on the reel 7. When extinguishing a fire, directly extract the hose and turn on the switch to put out the fire.

As shown in FIGS. 1-3 , the low-pressure liquid storage tank 2 includes a fire-fighting fluid 221 of no more than 70% and a gas 222 of no less than 30% by volume. Since the liquid is not easy to compress the volume, it is necessary to fill the liquid storage tank with about 70% of the fire-fighting fluid 21 and reserve about 30% of the space for the gas 222, which can effectively increase the fire-fighting fluid sprayed from the fire-fighting tank. The proportion of foam in the liquid improves the fire fighting effect.

After the gas is filled in the low-pressure liquid storage tank 2, the pressure is 1.2Mpa. After filling gas in the low-pressure liquid storage tank 2, the air pressure in the tank reaches 1.2Mpa to realize the low-pressure effect. One end of the low-pressure liquid storage tank 2 is provided with a fire-fighting liquid outlet pipe 223 connected to the fire-fighting liquid 221 in it; the fire-fighting liquid outlet pipe 223 is provided with a control valve 5; one end of the low-pressure liquid storage tank 2 is provided with an inflation pipe connected to the gas inside it 225; the inflation pipe 225 is connected on the pipeline between the liquid inlet end of the fire-fighting liquid outlet pipe 223 and the control valve 5 .

The characteristic of water-based fire extinguishing agent is that it will produce a large amount of foam when it fuses and collides with gas. According to the needs of fire extinguishing conditions, the liquid storage tank is added to the corresponding inflatable pipe 225 on the fire outlet pipe 223. After the improvement, the fire extinguishing speed is effectively improved. The same With the same pressure and the same flow rate, the foam of the sprayed fire extinguishing agent increases obviously.

One end of the low-pressure liquid storage tank 2 is provided with a liquid inlet pipe 226 and an air intake pipe 227; a pressure gauge 228 is provided on the low-pressure liquid storage tank 2 . The bottom of the side seat 101 is provided with an openable liquid storage tank box 230; the liquid storage tank box 230 is located on the outer side of the side seat 101 and connected to the bottom surface of the bus body 1 through a plurality of hinge seats 531. By arranging a plurality of hinged seats 531, the liquid storage tank box 530 is opened through a plurality of hinged seats, the low-pressure liquid storage tank 2 is arranged in the liquid storage tank box 530, and is fixed on the bottom wall of the carriage, and the liquid storage tank box 530 can be opened Maintenance, installation or disassembly of the low-pressure liquid storage tank 2, after the liquid storage tank box 503 is closed, the low-pressure liquid storage tank 2 cannot be seen from the overall appearance, which does not affect the overall appearance of the bus.

When a fire breaks out in the bus, the intensity of fire extinguishing should be high, and there should be no dead angle when spraying, so the start-up time is short. The application of the low-pressure liquid storage tank 2 can meet this requirement. The low-pressure liquid storage tank 2 is made of stainless steel. The wall thickness is 3 mm, 70% of the fire fighting fluid is added to the tank, leaving 30% of the space, and the pressure in the tank reaches 1.2Mpa after adding gas. Then stop the pressurization, and the joints of the tank body are all sealed. When starting, only the driver needs to pull the handle switch to realize fire extinguishing.

As shown in FIG. 4 , the swirl nozzle 3 for bus fire extinguishing includes: a liquid inlet spindle pipe 301 , a bearing 302 , a bearing sleeve 303 , a bottom core 304 and a mist swirl block 306 .

The liquid inlet spindle pipe 301 is used to connect the liquid inlet pipe, and the first bearing seat 311 is arranged outside the liquid outlet end of the liquid inlet spindle pipe 301; the bearing 302 is arranged on the first bearing seat 311; the bearing sleeve 303 is arranged outside the bearing 302, Wherein, a sealing retaining ring 321 is arranged between the bearing sleeve 303 and the bearing 302; the bottom core 304 is arranged outside the liquid outlet end of the liquid inlet spindle pipe 301, and the bottom core 304 is connected with the bearing sleeve 303 through the connecting sleeve 305; A plurality of square liquid spray ports 351 are arranged at predetermined distances; the mist swirl block 306 is arranged on the outer ring side of the connecting sleeve 305 , and a plurality of water outlet chutes 361 corresponding to the square liquid spray ports 351 are opened on the mist swirl block 306 .

By setting the first bearing seat 311 at the liquid outlet end on the liquid inlet spindle tube 301, and setting the bearing sleeve 303 outside the corresponding first bearing seat 311; The outlet liquid of the liquid inlet spindle tube 301 hits the bottom core and then splashes to the surroundings. A connecting sleeve 305 is arranged between the bottom core 304 and the bearing sleeve 303. After impacting the bottom core, the liquid can splash to the surroundings, and the subsequent liquid can be connected The square spray port 351 on the sleeve 305 sprays the liquid, and the square liquid spray port 351 can be four square spray ports in four directions arranged at intervals of 90 degrees on the connector, so that it can be evenly sprayed on the four squares of the connector sleeve Liquid, because the outer ring of the connecting sleeve 305 is fixed with the mist swirl block 306, the mist swirl block 306 is provided with a water outlet chute 361 corresponding to the square liquid spray port 351, so that the square liquid spray port 3051 can spray the fire extinguishing agent according to a certain inclined angle The sprayed fire extinguishing agent will act on the mist swirl block 306 with force, and the mist swirl block 306 will rotate through the bearings, so that the fire extinguishing swivel sprayer basically sprays a large amount of fire on a horizontal plane to improve the fire extinguishing effect.

Wherein, the water outlet chute 361 includes a blocking surface facing the square liquid spray port 351; a liquid separation groove 362 is arranged on the blocking surface. By setting the liquid separation groove 362 on the blocking surface, after the liquid ejected from the square liquid spray port 351 impacts the liquid separation groove 362, most of the liquid can be sprayed horizontally on the same horizontal plane by impacting the liquid separation groove 362, and part of the liquid is sprayed on the same horizontal plane. After impacting the liquid separation tank 362, it disperses up and down, realizing the spraying effect on multiple horizontal planes, and greatly improving the spraying effect of the rotary sprayer.

The square liquid spray port 351 includes a plurality of linearly arranged liquid spray sub-ports, by arranging a plurality of linearly arranged liquid spray sub-ports, the liquid can be dispersed at the square liquid spray port 351, and the spraying efficiency of the rotary sprayer can be improved. Dispersion effect, but also can increase the jet velocity, improve fire extinguishing efficiency.

There are four square liquid spray ports 351, and the interval between adjacent square liquid spray ports 351 is 90 degrees. Four water outlet chutes 361 corresponding to the square liquid spray ports 351 are provided on the mist swirl block 306 ;

When extinguishing a fire in the bus, it is important to consider the fire extinguishing intensity and spraying range, and it is most important to achieve all-round and no dead angle. In this embodiment, the liquid spraying port is changed to a square liquid spraying port 351, and the liquid spraying efficiency is high. Spray evenly; and a liquid separator 362 is set on the impact surface of the water outlet chute 361 to disperse the liquid sprayed from the square liquid spray port 351, realize spraying liquid on multiple surfaces, and realize spraying on multiple levels and horizontal surfaces. Improve the spraying effect, and the flow rate is large, which can effectively play the role of fire extinguishing and degrade a large amount of harmful smoke.

As shown in FIGS. 5-7 , the straight spray head 4 includes a spray head body 401 , and an X-shaped rotary core 402 is arranged inside the spray head body 401 . The spray angle of the spray head body 401 is 30° to 120°.

By setting the X-shaped rotary core 402 in the nozzle body 401, when the nozzle is spraying liquid at high pressure, the X-shaped rotary core 402 rotates faster, the spray angle is 30 degrees, and the spray distance is far. Decrease, the rotation speed of the X-shaped rotary core 402 slowly decreases, the spray angle increases, and the spray distance is short, so that the fire extinguishing direct spray nozzle spraying liquid range of the public transportation system is larger, and the fire extinguishing effect is better.

Wherein, the X-type rotary core 401 is a first semi-disc core 421 and a second semi-disc core comprising a semi-disc cutter body structure; The angles of the first half-disc core 421 and the second half-disc core are fixedly connected, and the arc edges of the first half-disc core 421 and the second half-disc core face outward.

By setting the X-shaped rotary core structure of the first semi-disc core 421 and the second semi-disc core structure, it can freely rotate in the nozzle body, so that the incoming liquid changes from a direct current state to a rotating state and sprays out, and the spraying distance is long , with a large range.

The structures of the first half-disc core 421 and the second half-disc core are basically the same, and the right-angled edge end region of the first half-disc core 421 is provided with a first breach 422; The locale has a second notch. This structural design can make the X-type rotary core high-pressure jet flow angle smaller and the distance longer, and the low-pressure jet flow angle is larger and the distance closer.

The liquid outlet 411 of the nozzle body 401 is an inner tapered groove structure. By setting the liquid outlet 411 of the nozzle body 401 as an inner tapered groove structure, the liquid sprayed by the fire extinguishing nozzle of the public transportation system can be formed at a certain angle. . The liquid inlet end of the nozzle body 401 is provided with a connecting thread 412 , and a mounting nut 413 is provided outside the middle area of the nozzle body 401 .

It is convenient to install the direct fire extinguishing nozzle for the public transportation system on the side wall or the top of the bus. When a bus catches fire, it is mostly a ground fire. In the process of extinguishing the ground fire, nozzles that can cover the entire pavement of the bus are required. This requires the installation of multiple nozzles to increase the spraying range of the nozzles. The bus system With the fire extinguishing direct spray head, by using the improved X-shaped rotary core, when the pressure is high, such as 12 kg, its spray angle is 30 degrees, and when the pressure is reduced to 3 kg, its spray angle is 120 degrees, so When extinguishing the fire, the entire bottom surface of the bus can be covered to achieve the effect of rapid fire extinguishing.

As shown in Figure 8, the control valve 5 includes: a three-piece ball valve 501 and a gate wire fixing plate 502, a switch control rod 511 is arranged on the top of the three-piece ball valve 501, and a valve switch pull rod 512 is fixed on the switch control rod 511; The plate 502 is fixed on the top of the three-piece ball valve 501 and is located at the lower side of the valve switch rod 512; the end of the gate wire fixing plate 502 is fixed with gate wire inlet holes 503 and gate wire outlet holes corresponding to the left and right ends of the valve switch rod 512 504.

By using the three-piece ball valve 501, the problems of inconvenient installation of switch valves on existing bus fire extinguishing systems and easy failure of valves controlled by power sources can be effectively solved. The gate line fixing plate 502 is installed on the top of the piece ball valve 501, which is convenient to control the three-piece ball valve 501 through the wire rope gate line, which is convenient for wiring, easy operation and installation.

The three-piece ball valve 501 includes a valve body, a liquid inlet connection valve piece 513 fixed at the liquid inlet end of the valve body, and a liquid outlet connection valve piece 514 fixed at the liquid outlet end of the valve body, wherein the gate line fixing plate 502 includes a connection valve for connecting the liquid inlet. The first connection lug 522 of the piece 513 is connected with the second connection lug 523 of the liquid outlet connection valve piece 514 . The gate wire fixing plate 502 is fixed on the three-piece ball valve 501 through two connecting ear plates, the connection structure is stable and the connection effect is good.

The end of the brake wire fixing plate 502 is provided with a fixed horizontal plate 521; the fixed horizontal plate 521 fixes at least two steel wire harness drums, and the brake wire inlet holes 503 and the brake wire outlet holes 504 are respectively arranged on the steel wire harness drums. By setting the fixed horizontal plate 521 at the end of the brake wire fixing plate 502, and fixing at least two steel wire bundle drums on the fixed horizontal plate 521, the brake wire wire rope can be well guided and restrained. Moreover, by setting Two steel wire harness barrels can prevent the wear of the brake wire rope during operation and improve the service life of the brake wire rope.

The gate wire inlet hole 503 and the gate wire outlet hole 504 are in the same plane as the valve switch pull rod 512 . The gate wire inlet hole 503 and the gate wire outlet hole 504 are in the same plane as the valve switch pull rod 512. When the valve switch pull rod 512 is controlled by the steel wire rope gate wire, the steel wire rope will not be cut and the service life of the steel wire rope will be improved.

The valve switch pull rod 512 is a fan-blade structure with both ends narrowed. The structure is simple, and the force can be well transmitted to the switch control rod under the condition of force at both ends.

As shown in FIG. 9 and FIG. 10 , the control hand brake 6 includes: a hand brake base 601 , a wire rope reel 602 , a hand brake handle 603 and an upper cover 606 .

The hand brake base 601 includes a bottom tray 611 and a guardrail ring stopper 612 arranged around the bottom tray 611. A central axis 613 is set in the central area of the tray 611; it is rotatably inserted on the central axis 613 around the wire rope reel 602; A plurality of drive holes 621 are arranged on the top of 602, and a first central axis hole 622 with an inner diameter larger than the central axis 613 is arranged around the middle of the wire rope reel 602; the hand brake handle 603 is rotatably inserted on the central axis 613, and the hand brake handle 603 includes a disc end 631 and the handle end 632; the middle area of the disk end 631 is provided with a second central axis hole 633 with an inner diameter larger than the central axis 613, and the bottom of the disk end 631 is fixed with a plurality of drive rods for insertion into the drive hole 621; the upper cover 606 Fasten on the hand brake base 1.

The control hand brake does not need electric or hydraulic control, and has a simple structure. It can be fixed near the driver through the hand brake base 601, and then the control wire rope can be connected by winding the wire rope reel 602. The tightening and returning of the wire rope has a simple control structure and convenient manual control.

The upper cover 606 is provided with a third central axis hole corresponding to the central axis 613; the upper cover 606 is provided with a gland 604, and the gland 604 is provided with a fourth central axis hole corresponding to the central axis 613, and the gland 604 is provided for connecting to the fastening screw 605 on the central axis 613. The connection structure between the upper cover 606 and the central shaft 612 is fixed by the gland 604 and the fastening screw 605, the overall structure is simple, and the installation and disassembly are convenient.

The guardrail ring block 612 fixes the cable outlet 607 outside, and the cable outlet 607 is provided with an inlet hole 671 and an outlet hole 672 . By setting the wire outlet 607 fixed on the outside of the guardrail ring block 612, and setting two outlet holes outside the wire outlet 607, the service life of the equipment can be greatly improved. The wire rope enters through the wire inlet 671 and extends from the wire outlet 672. out, and pass through the locking hole on the wire rope reel 602 in the middle, and lock the wire rope on the wire rope reel 602 through the locking bolt. The steel wire rope in 671 is tightened, and the steel wire rope in outlet hole 672 is loosened, realizes opening and closing action, and control hand brake handle 603 returns, and control action returns.

By using the steel wire rope as the control gate line, the control layout is more flexible and the control is faster.

A locking hole for locking the wire rope wound thereon is arranged on the winding wire rope reel 602, and a locking bolt is arranged in the locking hole. Eight drive holes 621 are arranged at equal intervals around the wire rope reel 602 , and two drive rods are fixed at the bottom of the disc end 631 . The two driving rods can realize the effective transmission of torque, and the eight driving holes can facilitate the installation of the disc angle, so as to adapt to the design of different situations inside the bus.

As shown in Figures 10-13, the fire reel 7 includes: a reel support, the reel support includes a base, and a left mounting support 701 and a right mounting support 702 connected to the base; The left reel wheel 711 on the seat 701, and the right reel wheel 721 connected to the right mounting support 702 through bearings, the left reel wheel 711 and the right reel wheel 721 are fixedly connected by the reel connecting rod 703; The mandrel 704 installed on the axis of the right mounting support 702 is provided with at least three O-rings 741 on the end of the mandrel 704 connected to the hose 705 on the fire-fighting reel.

Through the reel support, it is convenient to fix the fire reel to any part of the bus. In order to reduce the space occupied by the bus, the reel support is generally fixed near the driver, so that the hose 705 on the reel support can be directly pulled out Extinguishing. In addition, at least three O-rings 741 are installed on the shaft center mandrel 704 of the right mounting support 702 to seal and maintain pressure, so as to ensure that the reel hose 705 can still effectively ensure that the end of the reel hose 705 is under pressure for a long time. seal.

The left rolling end cap 713 is set on the left reel wheel 711, the right rolling end cap 723 corresponding to the left rolling end cap 713 is arranged on the right reel wheel 721, the left rolling end cap 713 and the right rolling end cap 723 Snap together. The rolling end cap is simple to manufacture, low in cost, and suitable for mass production.

The left rolling end cover 713 includes a left end face and a left-folding guardrail; the angle between the left end face and the left-folding guardrail is less than ninety degrees; the right rolling end cover 723 includes a right end face and a right-folding guardrail; the angle between the right end face and the right-folding guardrail is less than ninety degrees Spend.

The left rolling end cap 713 or the right rolling end cap 723 is set to a structural setting in which the angle between the end surface and the folded guardrail is less than 90 degrees, and the end cap generated by rolling can be fastened to the corresponding other end cap Inside, the structure is simple and no other welding structures are required.

In addition, the included angle between the left end face and the left-folding guardrail is 87 degrees; or, the included angle between the right end face and the right-folding guardrail is 87 degrees. Preferably, the angle between the end surface and the folding guardrail is 87 degrees, which makes the fastening easier and the processing is convenient.

Through the rolling method, the end cover is processed without punching machine, hydraulic press, or grinding tool, and the end cover formed by the shallow drawing process can be easily solved.

The hose 705 is wound on the reel connecting rod 703 , one end of the hose 705 is connected to the mandrel 704 , and the other end is connected to the fire sprinkler 751 . The hose 705 has a length of 5 meters to 50 meters.

There is long-term pressure in the hose of the fire reel, and the rotation is flexible. The spray gun can spray 5kg-15kg of firefighting fluid per minute, and the spraying distance is 12 meters.

The bus fire extinguishing system can be easily installed on any type of bus. The low-pressure liquid storage tank is installed on the underside of the seat in the passenger cabin or in the luggage compartment on the upper side of the vehicle chassis; the internal space of the low-pressure liquid storage tank is filled with water-based fire extinguishing agent, and the free space above the fire extinguishing agent is pressurized gas. The low-pressure liquid storage tank is connected with the cabin upper pipeline system and the lower pipeline system. The starting mode of the system is designed as a manual control mode, that is, when the driver finds a fire, the driver quickly operates the starting device on the left hand side (control hand brake 6), opens the control valve 5 on the low-pressure liquid storage tank, and pressurized gas tops The fire extinguishing agent is sprayed out to the nozzles above the fire pipeline in the cabin, and the fire extinguishing agent is sprayed out simultaneously through the swivel injectors and straight nozzles at the top and bottom of the cabin, as well as the nozzle holes on the pole near the door, to implement fire extinguishing and occupant protection. The holes are all low-pressure atomized and dispersed rotary spray, which will not cause any impact damage to the occupants in the bus. In addition, this bus fire extinguishing system has also designed a group of mobile fire-fighting reels 7, to cope with sporadic fires in the cabin, the outside of the cabin, such as tires on fire, also can be used as spare fire extinguishing equipment for the engine compartment.

The main advantages and advantages of this fire suppression system are:

1. High fire extinguishing efficiency. It can realize instant fire extinguishing for small and medium-sized fires (oil fires within 20 square meters), and fire extinguishing time for large fires (oil fires within 100 square meters) within 30 seconds. And strong anti-flammability.

2. The multi-functional fire extinguishing system can quickly extinguish fires of flammable solids, flammable liquids, flammable gases, charged substances, and kitchens. Versatile.

3. Strong low-temperature performance, the cold-resistant "Rui Te" water-based fire extinguishing agent concentrate has a minimum working temperature of -46 degrees, which completely solves the problem of using portable fire extinguishers in low-temperature environments, and can basically meet the winter field conditions in the three northern provinces and alpine regions of my country fire protection.

4. The shelf life is long. The shelf life of "Rui Te" water system fire extinguishing agent concentrate is more than 8 years, and the shelf life of its premix is more than 5 years, which greatly facilitates the management and use of fire fighting equipment in remote areas of our country.

5. Good environmental performance. The fire-fighting fluid of this product not only does not pollute the air, soil and water, but also has no irritation and harm to the human body. The residue after fire extinguishing can be completely and automatically degraded without polluting or damaging the target formation.

6. Outstanding auxiliary functions. The product also has auxiliary functions such as gunpowder smoke, detoxification and heat insulation, and the heat insulation can reach more than 3000 degrees. In reality, when encountering a spreading fire, when judging that the fire extinguishing equipment around you exceeds its fire extinguishing capacity, you can use the fire extinguishing equipment to spray on the surface of the clothes worn by people and the exposed skin (equivalent to wearing heat-resistant clothing), and quickly pass through the fire. Field, emergency escape.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A bus fire extinguishing system, comprising a bus body (1), a driver's seat (102) is set on the front side of the bus body (1), and a side seat (101) with its back against the inner wall is set in the bus middle area; its features is that The bottom of the side seat (101) is provided with a low-pressure fluid storage tank (2) for storing fire fighting fluid; The liquid outlet of the low-pressure liquid storage tank (2) is connected to the upper pipeline system (201) and the lower pipeline system (202) through the fire-fighting liquid outlet pipe (223), wherein the upper pipeline system (201) includes The top pipeline (203) that is arranged on the top of the bus body (1) is provided with a plurality of rotary injectors (3) for fire extinguishing on the top pipeline (203); the lower pipeline system (202) includes A lower pipeline (204) arranged at the bottom area of the side wall of the bus body (1), on which a plurality of direct nozzles (4) for fire extinguishing are arranged; A control valve (5) is set on the fire-fighting liquid outlet pipe (223); The control hand brake (6) of the control valve (5) is arranged on the inner side wall of the bus body (1) on one side of the driver's seat (102). 2. The bus fire extinguishing system according to claim 1, characterized in that: it also includes: The fire-fighting reel (7) arranged behind the driver's seat (102); wherein, the liquid inlet pipe of the fire-fighting reel (7) is connected between the liquid outlet of the low-pressure liquid storage tank (2) and the On the described fire-fighting fluid outlet pipe (223) between the aforementioned control valves (5). 3. The bus fire extinguishing system according to claim 2, characterized in that, the low-pressure liquid storage tank (2) includes a fire-fighting liquid (221) which is arranged in it and does not exceed 70% of its volume and a lot at thirty percent gas (222); After the gas is filled in the low-pressure liquid storage tank (2), the pressure is 1.2Mpa; One end of the low-pressure liquid storage tank (2) is provided with an inflatable pipe (225) connected to the gas inside; (5) on the pipeline between; The bottom of the side seat (101) is provided with an openable liquid storage tank box (330); The bottom surface is connected by a plurality of hinge seats (331). 4. The bus fire extinguishing system according to claim 3, characterized in that, the rotary injector (3) comprises: A liquid inlet spindle pipe (301) connected to the liquid inlet pipe, and a first bearing seat (311) is arranged outside the liquid outlet end of the liquid inlet spindle pipe (301); a bearing (302) arranged on the first bearing seat (311); a bearing sleeve (303) arranged outside the bearing (302), wherein a sealing retaining ring (321) is arranged between the bearing sleeve (303) and the bearing (302); The bottom core (304) arranged on the outside of the liquid outlet end of the liquid inlet spindle tube (301), the bottom core (304) is connected to the bearing sleeve (303) through a connecting sleeve (305); the connecting sleeve (305) a plurality of square liquid spray ports (351) are arranged at predetermined distances; The mist swirl block (306) arranged on the outer ring side of the connecting sleeve (305), the mist swirl block (306) is provided with a plurality of water outlet chutes (361) corresponding to the square liquid spray ports (351) ; The water outlet chute (361) includes a blocking surface facing the square liquid spray port (351); a liquid separation groove (362) is arranged on the blocking surface. 5. public transport fire extinguishing system according to claim 4, is characterized in that, described straight nozzle (4) comprises: The nozzle body (401), the X-shaped rotary core (402) is arranged in the nozzle body (401), and the spray angle of the nozzle body (401) is 30 degrees to 120 degrees; The X-shaped rotary core (401) is a first semi-disc core (421) and a second semi-disc core comprising a semi-disc cutter body structure; the first semi-disc core (421) and the second semi-disc core The linear sides of the two half-disc cores are obliquely fixedly connected according to a predetermined angle, and the arc sides of the first semi-disc core (421) and the second semi-disc core face outward; A first notch (422) is provided in the end area of the right-angled side of the first semi-disc core (421); A second notch is provided in the end area of the right-angled side of the second semi-disc core. 6. The bus fire extinguishing system according to claim 5, characterized in that, the liquid outlet (411) of the nozzle body (401) is an inner tapered groove structure; The liquid inlet end of the nozzle body (401) is provided with a connecting thread (412), and a mounting nut (413) is provided outside the middle area of the nozzle body. 7. The bus fire extinguishing system according to claim 6, wherein said control valve (5) comprises: A three-piece ball valve (501), the top of the three-piece ball valve (501) is provided with a switch control rod (511), and a valve switch pull rod (512) is fixed on the switch control rod (511); A brake wire fixing plate (502) fixed on the top of the three-piece ball valve (501) and located on the lower side of the switch pull rod (512); The end of the gate wire fixing plate (502) is fixed with gate wire inlet holes (503) and gate wire outlet holes (504) corresponding to the left and right ends of the valve switch pull rod (512); The three-piece ball valve (501) includes a valve body, a liquid inlet connecting valve piece (513) fixed at the liquid inlet end of the valve body, and a liquid outlet connecting valve piece (514) fixed at the liquid outlet end of the valve body, The brake line fixing plate (502) includes a first connecting ear plate (522) connected to the liquid inlet connecting valve piece (513) and a second connecting ear plate (523) connected to the liquid outlet connecting valve piece (514) ). 8. The bus fire extinguishing system according to claim 7, characterized in that, the end of the brake line fixing plate (502) is provided with a fixed horizontal plate (521); The fixed horizontal plate (521) fixes at least two steel wire harness barrels, and the brake wire inlet holes (503) and brake wire outlet holes (504) are respectively arranged on the steel wire harness barrels; wherein, The gate wire inlet hole (503) and gate wire outlet hole (504) are in the same plane as the valve switch pull rod (512). 9. The bus fire extinguishing system according to claim 8, characterized in that, the control hand brake (6) comprises: The hand brake base (601), the hand brake base (601) includes a bottom tray (611) and a guardrail ring stopper (612) arranged around the bottom tray (611), the central area of the tray (611) Set the central axis (613); The wire rope reel (602) rotatably inserted on the central shaft (613); the top of the wire rope reel (602) is provided with a plurality of driving holes (621), and the middle part of the wire rope reel (602) is provided with an inner diameter a first central axis hole (622) larger than said central axis (613); The hand brake handle (603) rotatably inserted on the central shaft (613), the hand brake handle (603) includes a disc end (631) and a handle end (632); the disc end (631 ) in the middle area is provided with a second central axis hole (633) whose inner diameter is larger than that of the central axis (613), and the bottom of the disc end (631) is fixed with a plurality of driving drives for inserting into the driving hole (621) rod; The upper cover (606) fastened on the hand brake base (601); A third central axis hole corresponding to the central axis (613) is provided on the upper cover (606); The fourth central axis hole corresponding to the central axis (613), the gland (604) is provided with fastening screws (605) for connecting to the central axis (613); The guardrail ring block (612) fixes the wire outlet (607) outside, and the wire outlet (607) is provided with an inlet hole (671) and an outlet hole (672); A locking hole for locking the wire rope wound thereon is arranged on the wire rope reel (602), and a locking bolt is arranged in the locking hole. 10. The bus fire extinguishing system according to claim 9, characterized in that, the fire reel (7) comprises: A reel support, the reel support includes a base, and a left mounting support (701) and a right mounting support (702) connected to the base; The left reel wheel (711) connected to the left mounting support (701) through bearings, and the right reel wheel (721) connected to the right mounting support (702) through bearings, the left The reel wheel (711) is fixedly connected to the right reel wheel (721) through a reel connecting rod (703); The mandrel (704) installed on the axis of the right mounting support (702), at least three O-shaped sealing ring (741); A left rolling end cap (713) is set on the left reel wheel (711), and a right rolling end cap (713) corresponding to the left rolling end cap (713) is set on the right reel wheel (721). 723), the left rolling end cap (713) is fastened with the right rolling end cap (723); The hose (705) is wound on the reel connecting rod (703), one end of the hose (705) is connected to the mandrel (704), and the other end is connected to the fire sprinkler (751). The hose (705) has a length of 5 meters to 50 meters.