CN102908738B - Two-phase flow superfine water mist nozzle - Google Patents
Two-phase flow superfine water mist nozzle Download PDFInfo
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- CN102908738B CN102908738B CN201210361995.5A CN201210361995A CN102908738B CN 102908738 B CN102908738 B CN 102908738B CN 201210361995 A CN201210361995 A CN 201210361995A CN 102908738 B CN102908738 B CN 102908738B
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Abstract
The invention discloses a two-phase flow superfine water mist nozzle which comprises a nozzle seat, two atomization cavities, an air inlet, a water inlet and a nozzle exit. A first atomization cavity and a second atomization cavity are arranged in series. By the aid of the two-phase flow superfine water mist nozzle, superfine water mist with an average particle diameter less than 20 micrometer is formed under low water inlet pressure (0.5-0.6MPa) and air supply pressure (0.4-0.5MPa). Compared with similar products, the two-phase flow superfine water mist nozzle has the advantages of low water supply pressure, low air supply pressure, simple and compact structure, energy conservation, convenience in processing, assembling, dismounting, cleaning and maintenance.
Description
Technical field
The invention belongs to fire-fighting equipment technical field, particularly relate to a kind of two phase flow superfine spray nozzle.
Background technology
Water mists, due to its advantage such as efficient, clean, inexpensive, is widely used in fire-fighting domain.Growing along with ultrasonic atomizatio and jet atomization technology, occur that particle diameter average is less than the superfine spray being similar to gas extinguishing agent of 50 μm, because of its have more easy mobility than conventional water mists, heat absorption efficiency is high, started to be applied to suppress burning mixture or dust explosion and fire extinguishing.
The generation type of superfine spray has three kinds of modes: water under high pressure is directly atomized, high pressure draught assisted atomization and ultrasonic wave overclocking vibration atomization.Because superfine spray is subject to external interference in flow process, after usually adopting waterfog head to form superfine spray in fire-fighting domain, directly inject protected space.
At present, existingly can form the waterfog head that particle diameter average is less than 50 μm and all need higher pressure of supply water and supply gas pressure, and energy ezpenditure is larger.Higher blowing down pressure can destroy original gas-liquid equilibrium in protected space, brings new hazards, is not suitable for the blast and fire extinguishing that suppress burning mixture or dust in the confined space.
Summary of the invention
It is simple that object of the present invention is just to provide a kind of structure, and the two phase flow superfine spray nozzle adopting lower water supply, supply gas pressure just can produce particle diameter average to be less than 20 μm of superfine sprays, can solve the problem of above-mentioned prior art completely.
Object of the present invention is realized by following technical proposals:
A kind of two phase flow superfine spray nozzle, comprise nozzle carrier, atomization chamber, air inlet, water inlet and jet hole, described atomization chamber has two, is the first atomization chamber of being arranged in series and the second atomization chamber.
The structure of this two atomization chamber can carry out twice atomization to current, thus makes the granularity of droplet thinner, evenly, also reduce pressure of supply water and supply gas pressure simultaneously.
As preferably, detachable connection cap of spraying nozzle on described nozzle carrier, between cap of spraying nozzle and nozzle carrier, nozzle core is set, the first atomization chamber is offered in nozzle core inside, on cap of spraying nozzle, correspondence offers the second atomization chamber, first atomization chamber is connected with the second atomization chamber, cap of spraying nozzle there is jet hole communicate with the second atomization chamber, nozzle carrier is offered air inlet and water inlet, the inlet chamber communicated with air inlet and water inlet is offered in nozzle carrier inside, the port of export that water inlet is positioned at inlet chamber arranges the water flowing core of detachable connection, water flowing core end is stretched in the first atomization chamber, keep at a certain distance away between water flowing outer core and the first atomization chamber wall formation first inlet channel, nozzle core is offered the second inlet channel inlet chamber is communicated with the second atomization chamber.
Because cap of spraying nozzle and nozzle carrier are detachable connections, nozzle core is fixed between cap of spraying nozzle and nozzle carrier, water flowing core is detachably connected on the port of export of water inlet, therefore, be conducive to form nozzle each parts manufacture processing, assembling, and follow-up dismounting, cleaning, maintenance, one of them parts damages also can use spare part to replace, need not scrap by whole nozzle, thus saved cost.
As preferably, described first atomization chamber is communicated with the second atomization chamber by the first atomisation outlet, the changeover portion of the first atomization chamber and the first atomisation outlet is the reducer that diameter diminishes gradually, the changeover portion of the first atomisation outlet and the second atomization chamber is the reducer that diameter becomes large gradually, and the changeover portion of the second atomization chamber and jet hole is the reducer that diameter diminishes gradually.
This structure is conducive to the chance increasing current extruding, impact, collide, shear, thus improves atomization of water current effect, and droplet is more disperseed, and granularity is thinner, evenly.
As preferentially, limbers offered by described water flowing core, this limbers is shoulder hole, and limbers is made up of inlet segment, changeover portion and water exit end, and the diameter of inlet segment is greater than water exit end, and changeover portion is the reducer that diameter diminishes gradually.
This structure is for accelerating flowing water, and because the diameter of inlet segment is greater than water exit end, therefore, when current flow into water exit end from inlet segment time, caliber diminishes suddenly, and water velocity will be made to increase.
As preferably, within the intersection point of the elongated central line of described first atomisation outlet and the second inlet channel is positioned at jet hole.
This set of second inlet channel makes charge air flow form the impact of certain angle to the current entering the second atomization chamber after the first atomization chamber atomization, this impact not only can accelerate water velocity, and current are impacted, collide, extrude, sheared, thus disperse droplet further, granularity is thinner, evenly.
As preferably, described water inlet is L shape water inlet.
The structure of this L shape makes water inlet and air inlet can be positioned at the homonymy of nozzle carrier, so just facilitates the installation of nozzle, and facilitates the layout of water inlet pipe, air inlet pipe pipeline, makes the arrangement of pipeline more neat, more rationally.
Compared with prior art, beneficial effect of the present invention is: can form the superfine spray that average grain diameter is less than 20 μm under lower intake pressure (0.5-0.6MPa) and supply gas pressure (0.4-0.5MPa), have pressure of supply water compared with similar products low, supply gas pressure is low, structure is simple, compact, energy-conservation, be convenient to processing, assembling, dismounting, cleaning, the advantage of maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of water flowing core in Fig. 1.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further illustrated.
As depicted in figs. 1 and 2, a kind of two phase flow superfine spray nozzle, comprises nozzle carrier 1, water flowing core 2, nozzle core 3 and cap of spraying nozzle 4.Detachable connection cap of spraying nozzle 4 on described nozzle carrier 1, inlet chamber 5 is offered at nozzle carrier 1 top, a step installed surface is had in inlet chamber 5, nozzle core 3 is placed on this step installed surface and is fixed between cap of spraying nozzle 4 and nozzle carrier 1, nozzle core 3 is offered the first atomization chamber 6, on cap of spraying nozzle 4, correspondence offers the second atomization chamber 7, first atomization chamber 6 is connected by the first atomisation outlet 8 on nozzle core 3 with the second atomization chamber 7, cap of spraying nozzle 4 there is jet hole 9 communicate with the second atomization chamber 7, nozzle carrier 1 is offered the air inlet 10 and water inlet 11 that communicate with inlet chamber 5, water inlet 11 is L shape water inlet, the port of export that water inlet 11 is positioned at inlet chamber 5 is threaded water flowing core 2, water flowing core 2 end is stretched in the first atomization chamber 6, keep at a certain distance away between water flowing core 2 outer wall and the first atomization chamber 6 wall formation first inlet channel 12, inlet chamber 5 is communicated with the second atomization chamber 7 by the second inlet channel 13 nozzle core 3 being offered inclination.
The changeover portion of described first atomization chamber 6 and the first atomisation outlet 8 is the reducer that diameter diminishes gradually, the changeover portion of the first atomisation outlet 8 and the second atomization chamber 7 is the reducer that diameter becomes large gradually, and the second atomization chamber 7 is the reducer that diameter diminishes gradually with the changeover portion of jet hole 9.
Limbers offered by described water flowing core 2, and this limbers is shoulder hole, and limbers is made up of inlet segment 201, changeover portion 202 and water exit end 203, and the diameter of inlet segment 201 is greater than water exit end 203, the reducer that changeover portion 202 diminishes gradually for diameter.
The intersection point of the elongated central line of described first atomisation outlet 8 and the second inlet channel 13 is positioned at jet hole 9 place.
The course of work of the present invention is as follows:
Low-pressure gas enters in inlet chamber from the air inlet nozzle carrier, then split into two stocks and do not enter the first inlet channel and the second inlet channel, simultaneously low-pressure water enters in the first atomization chamber by water inlet by water flowing core, and a part of low-pressure gas enters the first atomization chamber and water by the first inlet channel to carry out first time and be atomized.Water smoke after atomization enters the second atomization chamber through the first atomisation outlet, and with by the second inlet channel, another part gas entered in the second atomization chamber carries out second time and is atomized, the water smoke after atomization sprays through jet hole.
Nozzle of the present invention makes water smoke successively carry out twice atomization, by the structural design of reducer on water flowing core, the first atomization chamber, the first atomisation outlet, the second atomization chamber and jet hole, water velocity is constantly enhanced, water is constantly by gas impact, collision, extruding, shearing, expansion, thus achieve the superfine spray forming average grain diameter and be less than 20 μm under lower intake pressure (0.5-0.6MPa) and supply gas pressure (0.4-0.5MPa), the blast and the fire extinguishing that suppress burning mixture or dust in the confined space can be applicable to.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a two phase flow superfine spray nozzle, comprise nozzle carrier, atomization chamber, air inlet, water inlet and jet hole, described atomization chamber has two, for the first atomization chamber of being arranged in series and the second atomization chamber, it is characterized in that: detachable connection cap of spraying nozzle on described nozzle carrier, between cap of spraying nozzle and nozzle carrier, nozzle core is set, the first atomization chamber is offered in nozzle core inside, on cap of spraying nozzle, correspondence offers the second atomization chamber, first atomization chamber is connected with the second atomization chamber, cap of spraying nozzle there is jet hole communicate with the second atomization chamber, nozzle carrier is offered air inlet and water inlet, the inlet chamber communicated with air inlet and water inlet is offered in nozzle carrier inside, the port of export that water inlet is positioned at inlet chamber arranges the water flowing core of detachable connection, water flowing core end is stretched in the first atomization chamber, keep at a certain distance away between water flowing outer core and the first atomization chamber wall formation first inlet channel, nozzle core is offered the second inlet channel inlet chamber is communicated with the second atomization chamber.
2. two phase flow superfine spray nozzle according to claim 1, it is characterized in that: described first atomization chamber is communicated with the second atomization chamber by the first atomisation outlet, the changeover portion of the first atomization chamber and the first atomisation outlet is the reducer that diameter diminishes gradually, the changeover portion of the first atomisation outlet and the second atomization chamber is the reducer that diameter becomes large gradually, and the changeover portion of the second atomization chamber and jet hole is the reducer that diameter diminishes gradually.
3. two phase flow superfine spray nozzle according to claim 2, it is characterized in that: limbers offered by described water flowing core, this limbers is shoulder hole, limbers is made up of inlet segment, changeover portion and water exit end, the diameter of inlet segment is greater than water exit end, and changeover portion is the reducer that diameter diminishes gradually.
4. two phase flow superfine spray nozzle according to claim 3, is characterized in that: within the intersection point of the elongated central line of described first atomisation outlet and the second inlet channel is positioned at jet hole.
5. two phase flow superfine spray nozzle according to claim 4, is characterized in that: described water inlet is L shape water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361995.5A CN102908738B (en) | 2012-09-26 | 2012-09-26 | Two-phase flow superfine water mist nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361995.5A CN102908738B (en) | 2012-09-26 | 2012-09-26 | Two-phase flow superfine water mist nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN102908738A CN102908738A (en) | 2013-02-06 |
| CN102908738B true CN102908738B (en) | 2014-12-17 |
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| CN201210361995.5A Active CN102908738B (en) | 2012-09-26 | 2012-09-26 | Two-phase flow superfine water mist nozzle |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103405874A (en) * | 2013-08-30 | 2013-11-27 | 广东胜捷工业安全技术有限公司 | Double-phase-flow fire-extinguishing nozzle |
| CN104858087A (en) * | 2015-05-26 | 2015-08-26 | 重庆市机电设计研究院 | Cloud intelligent control automatic spray cooling system |
| CN106139460B (en) * | 2016-06-21 | 2017-08-29 | 北京航空航天大学 | Aerodynamic force formula ultrasonic wave multiphase blender |
| CN108543430B (en) * | 2018-07-02 | 2024-02-02 | 厦门松霖科技股份有限公司 | Water outlet device |
| CN110314311A (en) * | 2019-06-25 | 2019-10-11 | 浙江华消科技有限公司 | Fire-fighting robot and high voltage substation |
| CN112369922A (en) * | 2020-10-10 | 2021-02-19 | 华帝股份有限公司 | Atomizing nozzle, steam generator and steam cooking equipment |
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2012
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| CN102908738A (en) | 2013-02-06 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: VITALONG FIREFIGHTING SAFETY GROUP CO., LTD. Free format text: FORMER NAME: SICHUAN WEITELONG FIRE EQUIPMENT CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 611731 Chengdu high tech West West Road, No. 99, attached to No. 9, No. Patentee after: VITALONG FIRE SAFETY GROUP Co.,Ltd. Address before: 611731 Chengdu high tech West West Road, No. 99, attached to No. 9, No. Patentee before: SICHUAN WEITELONG FIREFIGHTING EQUIPMENT Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Two-phase flow ultra-fine water mist nozzle Effective date of registration: 20220805 Granted publication date: 20141217 Pledgee: Zheshang Bank Co.,Ltd. Chengdu Branch Pledgor: VITALONG FIRE SAFETY GROUP Co.,Ltd. Registration number: Y2022980012036 |