CN104492013A

CN104492013A - Heightening ejector for fire device

Info

Publication number: CN104492013A
Application number: CN201510003295.2A
Authority: CN
Inventors: 余庆发
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-01-06
Filing date: 2015-01-06
Publication date: 2015-04-08

Abstract

The invention provides a heightening ejector for a fire device. The heightening ejector is mainly characterized in that one end of a housing is connected with a jet pipe with a conical pipe, the other end of the housing is connected with a rear cover with a conical pipe and a silk cap, an internal tank is arranged in the housing; slightly wide parallel channels are formed between the middle of the internal tank and the housing, a narrow conical contractive channel is formed between one end of the internal tank and the conical pipe of the jet pipe, the narrow conical contractive channel is communicated with the slightly wide parallel channels, a jet angle alpha is formed in the intersection of the narrow conical contractive channel, a conical diffusion channel is formed between the other end of the internal tank and the conical pipe of the back cover and is communicated with the slightly wide parallel channels, and a flow channel is formed in the periphery of the internal tank so as to form the heightening ejector. The heightening ejector has a simple structure, is easy to manufacture and convenient to use and can be used by only directly connecting threads of the rear cover to a water nozzle of a nozzle of a fire engine; in addition, the heightening ejector is operated randomly, is light in weight, low in cost and high in jetting height, has the jetting height reaching up to 60 meters when a jetting elevation beta is equal to 80 degrees and is capable of effectively solving the fire problem of a high-rise with at least twenty layers.

Description

Fire-fighting equipment increases injector

Technical field

The present invention relates to a kind of injector, particularly a kind of fire-fighting equipment increases injector.Directly can be connected with the water cannon exit of fire-fighting roof, can use, and it be high to spray water.

Background technology

At present, the injector great majority that fire fighting truck adopts are the very simple nozzle of structure, also claim hydraulic giant.This hydraulic giant is conical pipe, its big opening end is communicated with water pump by the nut of M85X2, osculum end is water jet, at motor (automobile engine) although effect under this hydraulic giant can eject very powerful water column, but about its jetting height only reaches six floors of house owed by a citizen, catch fire just helpless once run into skyscraper a little.Once on Henan Province on August 31 in 2012 " Dahe Daily ", reported a kind of SXIP 56 type height spray fire fighting truck, it adopts the mode of aerial ladder fire-fighting lance to be raised 56 meters, its bicycle cost 3,850,000 yuan; This is reported and reports again the hook and ladder that can raise 101 meters on November 3rd, 2012, and cost is more than 2,300 ten thousand yuan.Thisly risen by hydraulic giant so high by aerial ladder, during injection, its kick is so large again, and seriously there is hidden danger, price is also very expensive.

Catching fire of high-rise residential building, fire water spray again less than, this tragedy is constantly in generation ....

Summary of the invention

A kind of fire-fighting equipment is the object of the present invention is to provide to increase injector, not only structure is simple, easy to manufacture, weight is light and handy for it, cheap but also effectively can increase jetting height, make the highest jetting height can reach 60 meters, simultaneously easy to use again, can be connected directly between on the nozzle of fire fighting truck.

Common fire fighting truck water spray is not high, originally increases that injector overcomes that principle in the past calculates, defect in structural design.Imagination: upwards spray H height, according to movement of falling object rule, water column goes out speed V=(2gH during muzzle) ^1/2, in formula, g is acceleration of gravity, and H is jetting height; Again, this water column rises at H height, and it needs potential energy E=gH, and g is the proportion of water.That is, water column is when going out water jet, and existing speed V, has again attachment potential energy E, only in this way could meet water column and spray high H.Now, though common fire fighting truck has very high spray speed, but their water column does not all adhere to potential energy, so spray is not high all without exception.Since the Chinese Central Television (CCTV) catches fire, by this imagination, design and depict and increase injector drawing, and manufactured two stainless steel samples by this figure, result of the test shows, increases jetting height obvious especially.

Its solution is: at the jet pipe of one end connecting band conical pipe of shell, the bonnet of other end connecting band conical pipe and silk cap, is provided with inner canister in shell.Slightly wide parallel channels is formed between the middle part of inner canister and shell, narrow taper constricted channel is formed between one end of inner canister and the conical pipe of jet pipe, it is connected with slightly wide parallel channels, and form jet angle in the intersection of this narrow taper constricted channel, and between the other end of inner canister and the conical pipe of bonnet, form taper diffusion admittance, it is connected with slightly wide parallel channels, thus forms the passage of current in inner canister surrounding, forms and increases injector.

The present invention adopts technique scheme, and its structure is simple, easy to manufacture, only need a chassis bed and an electric welding machine just can produce, and easy to use, jetting height is high, as long as the bonnet screw thread increasing injector is connected directly between on the water jet of fire fighting truck nozzle.And lightweight, net weight < 15kg/, cost is low, less than 20,000 yuan/.Load onto at fire fighting truck and originally increase injector, under any state of jet angle of sprinkler flow β > 35.5 °, its water spray height is than original Zeng Gao ⊿ H=10 ~ 30m.Such as when jet angle of sprinkler flow β=60 °, high≤25 m of common fire fighting truck spray, are still this jet angle of sprinkler flow β=60 °, be equipped with originally increase injector fire fighting truck it can spray high 52m, increase Gao Du ⊿ H=27m.When jet angle of sprinkler flow β=80 °, most high energy sprays H=60 m, this is because water column is from existing speed V when originally increasing injector ejection, has again attachment potential energy.Thus effectively can solve the fire problem at least two ten floor height buildings and thoroughly eliminate the fear that people live high building chance fire.

Accompanying drawing explanation

Fig. 1 is the structural representation that fire-fighting equipment increases injector.

Fig. 2 is the using state figure of Fig. 1.

Fig. 3 is the sample pictures that fire-fighting equipment increases injector and the application example picture be arranged on fire fighting truck thereof.

Detailed description of the invention

The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.

In Fig. 1, the jet pipe 2 of one end connecting band conical pipe of shell 5, the bonnet 4 of other end connecting band conical pipe and silk cap.In shell 5, be provided with hollow inner canister 3, this hollow inner canister 3 is fixedly connected with shell 5 by the set screw of six around it, and is positioned the middle of shell 5.Slightly wide parallel channels 8 is formed between the middle part of inner canister 3 and shell 5, narrow taper constricted channel 9 is formed between one end of inner canister 3 and the conical pipe of jet pipe 2, it is connected with slightly wide parallel channels 8, and form jet angle α in the intersection of this narrow taper constricted channel 9, taper diffusion admittance 7 is formed between the other end of inner canister 3 and the conical pipe of bonnet 4, it is connected with slightly wide parallel channels 8, thus forms the passage of current in inner canister 3 surrounding, forms and increases injector.

In Fig. 2, this fire-fighting equipment is increased injector 16 and is directly threaded with the spout on common fire fighting truck 1 by the silk cap on its bonnet 4.When water pump 14 works under the effect of the 1 of automobile engine 5 of common fire fighting truck 1, water is sent into be increased in injector 16, the taper diffusion admittance 7 that water flows through successively, slightly wide parallel channels 8 and narrow taper constricted channel 9, flow through again jet angle α, finally sprays from the spout of jet pipe 2.When jet angle of sprinkler flow β=80 °, its jetting height H=60m.And about 21.2 meters of the distance s increased between injector 16 and high-rise building thing.

Fig. 3 is the three width example pictures that fire-fighting equipment increases injector 16, and wherein, figure sheet ﹙ 1 ﹚ illustrates the stainless steel sample that two are increased injector 16.Once three had been done in 2012, wherein the irony Er outer coating Red Qi ﹚ of ﹙, copper one.Above-mentioned two stainless steel samples made in May, 2014.And significant improvement has been done to the locate mode of hollow inner canister 3; Tu Pian ﹙ 2 ﹚ illustrates and increases injector 16 and be threaded in application example Qing Kuang ﹙ screw thread M85X2 ﹚ on the nozzle spray mouth of common fire fighting truck 1; Tu Pian ﹙ 3 ﹚ illustrates the state increasing injector 16 and using.Now, the injection volume flow scape M of water column ₀=601/S=216m ³/ h, increases the operating pressure p ≌ 15.5kg/cm of injector 16 ²the power output N ≌ 155kw of motor.

Further illustrate fire-fighting equipment thus increase the operability of injector 16 and the effective technology effect of jetting height can be increased.

Claims

1. a fire-fighting equipment increases injector, it is characterized in that, Pen Guan ﹙ 2 ﹚ of one end connecting band conical pipe of Wai Ke ﹙ 5 ﹚, Hou Gai ﹙ 4 ﹚ of other end connecting band conical pipe and silk cap, Guan ﹙ 3 ﹚ Nei being provided with in Wai Ke ﹙ 5 ﹚, form slightly wide Ping between the middle part of this Nei Guan ﹙ 3 ﹚ and Wai Ke ﹙ 5 ﹚ to work ﹙ 8 ﹚, form narrow taper between one end of Nei Guan ﹙ 3 ﹚ and the conical pipe of Pen Guan ﹙ 2 ﹚ and shrink Tong Dao ﹙ 9 ﹚, it and slightly wide Ping ﹙ 8 ﹚ that works is connected, the intersection of shrinking Tong Dao ﹙ 9 ﹚ in this narrow taper forms jet angle α, and form taper between the conical pipe of the other end of Nei Guan ﹙ 3 ﹚ and Hou Gai ﹙ 4 ﹚ and spread Tong Dao ﹙ 7 ﹚, it and slightly wide Ping ﹙ 8 ﹚ that works is connected, thus Nei Guan ﹙ 3 ﹚ surrounding forms water stream channel, form and increase injector.