CN202802613U - Two-phase-flow superfine water mist spray nozzle - Google Patents

Two-phase-flow superfine water mist spray nozzle Download PDF

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Publication number
CN202802613U
CN202802613U CN 201220494779 CN201220494779U CN202802613U CN 202802613 U CN202802613 U CN 202802613U CN 201220494779 CN201220494779 CN 201220494779 CN 201220494779 U CN201220494779 U CN 201220494779U CN 202802613 U CN202802613 U CN 202802613U
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CN
China
Prior art keywords
atomization chamber
inlet
nozzle
water
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN 201220494779
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Chinese (zh)
Inventor
汪映标
吴明军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN WEITELONG FIRE FIGHTING EQUIPMENT CO Ltd
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SICHUAN WEITELONG FIRE FIGHTING EQUIPMENT CO Ltd
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Priority to CN 201220494779 priority Critical patent/CN202802613U/en
Application granted granted Critical
Publication of CN202802613U publication Critical patent/CN202802613U/en
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Abstract

The utility model discloses a two-phase-flow superfine water mist spray nozzle which comprises a spray nozzle seat, two atomizing cavities, an air inlet, a water inlet and a spray nozzle opening; the two atomizing cavities are a first atomizing cavity and a second atomizing cavity which are connected in series. According to the utility model, at low water intake pressure (0.5-0.6MPa) and air supply pressure (0.4-0.5MPa), superfine water mist with the average particle size less than 20 micrometers can be formed; and compared with the similar type of products, the two-phase-flow superfine water mist spray nozzle has the advantages of low water supply pressure, low air supply pressure, simple and compact structure, energy conservation, and convenience in manufacturing, dismounting, cleaning and maintaining.

Description

Two phase flow superfine spray nozzle
Technical field
The utility model belongs to the fire-fighting equipment technical field, particularly relates to a kind of two phase flow superfine spray nozzle.
Background technology
Thin water smoke is because its advantage such as efficient, clean, inexpensive has been widely used in fire-fighting domain.Growing along with ultrasonic atomizatio and jet atomization technology, the superfine spray that be similar to gas extinguishing agent of particle diameter average less than 50 μ m appearred, because it has more easy mobility, heat absorption efficiency height than the thin water smoke of routine, burning mixture or dust explosion and fire extinguishing have been begun to be applied to suppress.
The generation type of superfine spray has three kinds of modes: water under high pressure directly atomizes, high pressure draught assisted atomization and ultrasonic wave overclocking vibration atomizing.Because superfine spray is subject to external interference in flow process, the employing waterfog head directly injects protected space after forming superfine spray in fire-fighting domain usually.
At present, the existing particle diameter average that can form all needs higher pressure of supply water and supply gas pressure less than the waterfog head of 50 μ m, and energy consumption is larger.Higher blowing down pressure can destroy original gas-liquid equilibrium in protected space, has brought new hazards, is not suitable for the blast and the fire extinguishing that suppress the interior burning mixture of the confined space or dust.
The utility model content
The purpose of this utility model just provides a kind of simple in structure, adopts low water supply, supply gas pressure just can produce the particle diameter average less than the two phase flow superfine spray nozzle of 20 μ m superfine sprays, can solve the problem of above-mentioned prior art fully.
The purpose of this utility model realizes by following technical proposals:
A kind of two phase flow superfine spray nozzle comprises nozzle carrier, atomization chamber, air inlet, water inlet and jet hole, and described atomization chamber has two, is the first atomization chamber and second atomization chamber of series connection setting.
The structure of this two atomization chamber can be carried out twice atomizing to current, thereby makes the granularity of droplet thinner, more even, has also reduced pressure of supply water and supply gas pressure simultaneously.
As preferably, detachable connection cap of spraying nozzle on the described nozzle carrier, between cap of spraying nozzle and the nozzle carrier nozzle core is set, the first atomization chamber is offered in nozzle core inside, correspondence is offered the second atomization chamber on the cap of spraying nozzle, the first atomization chamber is connected with the second atomization chamber, there is jet hole to communicate with the second atomization chamber on the cap of spraying nozzle, offer air inlet and water inlet at nozzle carrier, the inlet chamber that communicates 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, keeping at a certain distance away between water flowing outer core and the first atomization chamber wall forms the first inlet channel, offers the second inlet channel on the nozzle core inlet chamber is communicated with the second atomization chamber.
Because cap of spraying nozzle is detachable the connection with nozzle carrier, nozzle core is fixed between cap of spraying nozzle and the nozzle carrier, the water flowing core is detachably connected on the port of export of water inlet, therefore, be conducive to form manufacturing processing, the assembling of each parts of nozzle, and follow-up dismounting, cleaning, maintenance, one of them parts damages also can use spare part to replace, need not scrap by whole nozzle, thereby saved cost.
As preferably, described the first atomization chamber is communicated with the second atomization chamber by the first atomizing outlet, the changeover portion of the first atomization chamber and the first atomizing outlet is the reducer that diameter diminishes gradually, the changeover portion of the first atomizing outlet and the second atomization chamber is that diameter becomes large reducer 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 increase the chance of current extruding, impact, collision, shearing, thereby improves the atomization of water current effect, and droplet is more disperseed, and granularity is thinner, and is more even.
As preferentially, offer the limbers on the described water flowing core, this limbers is shoulder hole, and the limbers is comprised 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 be used for to be accelerated flowing water, because the diameter of inlet segment is greater than water exit end, therefore, when current flowed into water exit end from inlet segment, caliber diminished suddenly, will so that water velocity increase.
As preferably, described the first atomizing outlet is positioned in the jet hole with the intersection point of the center extended line of the second inlet channel.
This set of the second inlet channel is so that charge air flow forms the impact of certain angle to the current that enter the second atomization chamber after atomizing through the first atomization chamber, this impact not only can be accelerated water velocity, and current are impacted, collide, push, shear, thereby further disperse droplet, granularity is thinner, and is more even.
As preferably, described water inlet is L shaped water inlet.
This L shaped structure has so just made things convenient for the installation of nozzle so that water inlet and air inlet can be positioned at the homonymy of nozzle carrier, and makes things convenient for the layout of water inlet pipe, air inlet pipe pipeline, and is so that arranging of pipeline is more neat, more reasonable.
Compared with prior art, the beneficial effects of the utility model are: can be in the lower average grain diameter that forms of lower intake pressure (0.5-0.6MPa) and supply gas pressure (0.4-0.5MPa) less than the superfine sprays of 20 μ m, and it is low to have compared with similar products a pressure of supply water, and supply gas pressure is low, simple in structure, compactness, energy-conservation, be convenient to processing, assembling, the advantage of maintenance is cleaned in dismounting.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of water flowing core among Fig. 1.
The specific embodiment
Below in conjunction with specific embodiments and the drawings the utility model is further described.
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 the described nozzle carrier 1, inlet chamber 5 is offered at nozzle carrier 1 top, one step installed surface is arranged in the inlet chamber 5, nozzle core 3 places and is fixed between cap of spraying nozzle 4 and the nozzle carrier 1 on this step installed surface, offer the first atomization chamber 6 on the nozzle core 3, correspondence is offered the second atomization chamber 7 on the cap of spraying nozzle 4, the first atomization chamber 6 is connected by the atomizing of first on the nozzle core 3 outlet 8 with the second atomization chamber 7, there is jet hole 9 to communicate with the second atomization chamber 7 on the cap of spraying nozzle 4, offer air inlet 10 and the water inlet 11 that communicates with inlet chamber 5 at nozzle carrier 1, water inlet 11 is L shaped water inlet, the port of export that water inlet 11 the is positioned at inlet chamber 5 water flowing core 2 that is threaded, water flowing core 2 ends are stretched in the first atomization chamber 6, keeping at a certain distance away between water flowing core 2 outer walls and the first atomization chamber 6 walls forms the first inlet channel 12, and the second inlet channel 13 of offering inclination on the nozzle core 3 is communicated with inlet chamber 5 with the second atomization chamber 7.
The changeover portion of described the first atomization chamber 6 and the first atomizing outlet 8 is the reducer that diameter diminishes gradually, the changeover portion of the first atomizing outlet the 8 and second atomization chamber 7 is that diameter becomes large reducer gradually, and the second atomization chamber 7 is the reducer that diameter diminishes gradually with the changeover portion of jet hole 9.
Offer the limbers on the described water flowing core 2, this limbers is shoulder hole, and the limbers is comprised 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 center extended line of described the first atomizing outlet the 8 and second inlet channel 13 is positioned at jet hole 9 places.
The course of work of the present utility model is as follows:
The air inlet of low-pressure gas from nozzle carrier enters the inlet chamber, then split into two stocks and do not enter the first inlet channel and the second inlet channel, low-pressure water is entered in the first atomization chamber by the water flowing core by water inlet simultaneously, and a part of low-pressure gas enters the first atomization chamber by the first inlet channel and water carries out the atomizing first time.Water smoke after the atomizing enters the second atomization chamber through the first atomizing outlet, carries out the atomizing second time with another part gas that is entered by the second inlet channel in the second atomization chamber, and the water smoke after the atomizing is through the jet hole ejection.
Nozzle of the present utility model is so that water smoke has successively carried out twice atomizing, structural design by reducer on water flowing core, the first atomization chamber, the first atomizing outlet, the second atomization chamber and the jet hole, water velocity constantly is enhanced, water is constantly impacted, collides, pushes, shears, expands by gas, thereby realized under lower intake pressure (0.5-0.6MPa) and supply gas pressure (0.4-0.5MPa), forming average grain diameter less than the superfine spray of 20 μ m, can be applicable to suppress blast and the fire extinguishing of the interior burning mixture of the confined space or dust.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims (6)

1. a two phase flow superfine spray nozzle comprises nozzle carrier, atomization chamber, air inlet, water inlet and jet hole, it is characterized in that: described atomization chamber has two, is the first atomization chamber and second atomization chamber of series connection setting.
2. two phase flow superfine spray nozzle according to claim 1, it is characterized in that: detachable connection cap of spraying nozzle on the described nozzle carrier, between cap of spraying nozzle and the nozzle carrier nozzle core is set, the first atomization chamber is offered in nozzle core inside, correspondence is offered the second atomization chamber on the cap of spraying nozzle, the first atomization chamber is connected with the second atomization chamber, there is jet hole to communicate with the second atomization chamber on the cap of spraying nozzle, offer air inlet and water inlet at nozzle carrier, the inlet chamber that communicates 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, keeping at a certain distance away between water flowing outer core and the first atomization chamber wall forms the first inlet channel, offers the second inlet channel on the nozzle core inlet chamber is communicated with the second atomization chamber.
3. two phase flow superfine spray nozzle according to claim 2, it is characterized in that: described the first atomization chamber is communicated with the second atomization chamber by the first atomizing outlet, the changeover portion of the first atomization chamber and the first atomizing outlet is the reducer that diameter diminishes gradually, the changeover portion of the first atomizing outlet and the second atomization chamber is that diameter becomes large reducer gradually, and the changeover portion of the second atomization chamber and jet hole is the reducer that diameter diminishes gradually.
4. two phase flow superfine spray nozzle according to claim 3, it is characterized in that: offer the limbers on the described water flowing core, this limbers is shoulder hole, the limbers is comprised 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.
5. two phase flow superfine spray nozzle according to claim 4 is characterized in that: described the first atomizing outlet is positioned in the jet hole with the intersection point of the center extended line of the second inlet channel.
6. according to claim 5 or 6 described two phase flow superfine spray nozzles, it is characterized in that: described water inlet is L shaped water inlet.
CN 201220494779 2012-09-26 2012-09-26 Two-phase-flow superfine water mist spray nozzle Withdrawn - After Issue CN202802613U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220494779 CN202802613U (en) 2012-09-26 2012-09-26 Two-phase-flow superfine water mist spray nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220494779 CN202802613U (en) 2012-09-26 2012-09-26 Two-phase-flow superfine water mist spray nozzle

Publications (1)

Publication Number Publication Date
CN202802613U true CN202802613U (en) 2013-03-20

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CN 201220494779 Withdrawn - After Issue CN202802613U (en) 2012-09-26 2012-09-26 Two-phase-flow superfine water mist spray nozzle

Country Status (1)

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CN (1) CN202802613U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102908738A (en) * 2012-09-26 2013-02-06 四川威特龙消防设备有限公司 Two-phase flow superfine water mist nozzle
CN105154614A (en) * 2015-09-29 2015-12-16 华北理工大学 Double-medium atomizing nozzle capable of achieving atomizing under assistance of ultrasonic waves

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102908738A (en) * 2012-09-26 2013-02-06 四川威特龙消防设备有限公司 Two-phase flow superfine water mist nozzle
CN102908738B (en) * 2012-09-26 2014-12-17 四川威特龙消防设备有限公司 Two-phase flow superfine water mist nozzle
CN105154614A (en) * 2015-09-29 2015-12-16 华北理工大学 Double-medium atomizing nozzle capable of achieving atomizing under assistance of ultrasonic waves

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AV01 Patent right actively abandoned

Granted publication date: 20130320

Effective date of abandoning: 20141217

RGAV Abandon patent right to avoid regrant