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WO2008002189A1 - Appareil de lutte contre les incendies - Google Patents

Appareil de lutte contre les incendies Download PDF

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Publication number
WO2008002189A1
WO2008002189A1 PCT/RU2007/000306 RU2007000306W WO2008002189A1 WO 2008002189 A1 WO2008002189 A1 WO 2008002189A1 RU 2007000306 W RU2007000306 W RU 2007000306W WO 2008002189 A1 WO2008002189 A1 WO 2008002189A1
Authority
WO
WIPO (PCT)
Prior art keywords
channels
profiled
liquid
fire
flow
Prior art date
Application number
PCT/RU2007/000306
Other languages
English (en)
Inventor
Andrey Leonidovich Dushkin
Alexander Vladimirovich Karpyshev
Original Assignee
Andrey Leonidovich Dushkin
Karpyshev Alexander Vladimirov
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andrey Leonidovich Dushkin, Karpyshev Alexander Vladimirov filed Critical Andrey Leonidovich Dushkin
Publication of WO2008002189A1 publication Critical patent/WO2008002189A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water

Definitions

  • the invention relates to fire-fighting technique, in particular, fire-fighting means wherein the operating principle is based on generation of gas-liquid streams and mist screens.
  • Fire-fighting apparatuses comprising liquid sprayers of various designs are known nowadays.
  • the apparatus consists of a branch pipe with a flow-through channel and a sprayer defined by a bundle of tubes equal in diameter and adapted for liquid feeding.
  • the tubes are rigidly fixed within a plate made from elastic material.
  • a forming mechanism cooperating with the tubes is provided on the branch pipe.
  • the forming mechanism is made as a barrel having a perforated spherical bottom with a bundle of tubes penetrating through said bottom.
  • the dispersion ability of the generated flow across its section is varied by moving the barrel toward the plate. As a result, the perforated bottom deflects the resilient plate and the tubes rigidly fixed in the plate are deviated toward the center. On changing the spatial orientation of the feeding tubes, the dispersion ability of the generated flow and uniformity in the distribution of liquid droplets across the flow section are varied.
  • the given apparatus allows the dispersion ability of the gas-and-droplet flow to be continuously reduced so that a mixed compactly sprayed flow including a central compact flow and a peripheral sprayed flow is formed.
  • operation of the apparatus under consideration does not provide for a sufficiently high dispersion ability and homogeneity in spatial distribution of finely-dispersed liquid droplets.
  • 1 1.04.1972 is a spraying head for a fire-hose lance, said spraying head comprising a casing with two parallel, profiled channels arranged symmetrically relative to an axis of symmetry of the casing.
  • the distance between the profiled channels is at least 1.2 the diameter of their outlet apertures.
  • the liquid dispersion ability is enhanced and the sprayed liquid flow dispersion ability is adjusted through using an injector including a cone attachment located at the side near the outlet apertures of the profiled channels with possibility of rotation relative to an axis of symmetry of the casing within the range of 90°.
  • the fire-extinguishing apparatus has a reservoir containing a fire-extinguishing liquid, a pressurized gas cylinder, a pipeline system, a pressure regulator, a back valve, a feeding hose, a gun, and a spraying nozzle.
  • the nozzle is designed so as to provide for fire-extinguishing mode controlling depending on the type of a fire-extinguishing composition utilized. Either water free from additives or water containing a foam former may be utilized as a fire- extinguishing liquid.
  • the nozzle comprises a casing with a central foam feeding channel and peripheral water feeding channels, a foam and air mixing chamber, a distribution chamber, and is additionally equipped with a reverse valve for fire-extinguishing mode controlling.
  • a stopper provided on the end part of the casing is furnished with discharge openings communicating with the liquid feeding channels.
  • the apparatus operates as follows.
  • a gas feeding valve is initially opened so that the pressurized gas is delivered from the cylinder through the pressure regulator into the reservoir containing a fire-extinguishing liquid to displace the latter through the pipeline into a hose.
  • the fire-extinguishing mode is selected using a special control valve. Depending on the mode selected, respective water feeding channels or foam feeding channel are opened.
  • the fire- extinguishing liquid is directed through the hose to the spraying nozzle and is then sprayed onto the fire hazard zone.
  • the control valve With the extinguishing mode using water, the control valve is in a position where the foam feeding branch pipe is closed and the water feeding branch pipe is opened. Water is supplied through the water feeding channel via the distribution chamber to the peripheral outlet apertures of the nozzles.
  • the reverse control valve In case water containing a foam former is utilized as a fire-extinguishing liquid, the reverse control valve is moved to a position where the liquid feeding branch pipe is closed and the foam former feeding branch pipe is opened. The water containing a foam former is delivered into the mixing chamber to be mixed with the air drawn from the environmental atmosphere. The foam generated is fed through the central channel into the nozzle, from which nozzle the resultant fire-extinguishing composition is sprayed onto the hotbed of fire.
  • the fire-extinguishing apparatus of the given design does not provide for a required degree of spatial homogeneity and high dispersion ability of the liquid droplets, said properties being necessary for enabling electric safety during extinguishing of fires occurred on electric installations, which are under the voltage of up to 1,000 V.
  • the liquid and gas are preliminarily mixed in a mixing chamber whereto the liquid (water) and gas (air) are separately fed through a valve mechanism.
  • the length of the profiled channel of the nozzle is selected depending on the diameter of its minimum section.
  • the pressurized air is delivered from the high-pressure cylinder through the pressure regulator into the reservoir filled with the liquid.
  • the liquid is displaced by the pressurized gas from the reservoir through feeding hoses into a liquid cavity of the mixing chamber to be mixed with the gas.
  • the generated two-phase gas-and-droplet flow is then speeded up in the profiled channel of the nozzle.
  • the range of discharge of the gas-and-droplet flow generated using the prior art apparatus is at least 12 m.
  • the film flow of the liquid is provided along the surface of the profiled channel of the nozzle.
  • the maximum of the volumetric density of droplets is urged to a wall, and the gas-and-droplet flow acquires a circular structure.
  • the so-called "liquid plugs" are formed in the circular gas-and-droplet flow. The result is that an average size of the liquid droplets in the flow is increased and an opening angle of the flow cone is periodically altered.
  • the above processes lead to non-uniform spatial distribution of liquid droplets in the generated gas-and-droplet flow and non-homogeneous distribution of sizes of the liquid droplets.
  • the major object of the invention is to create a fire-extinguishing apparatus providing a uniform spatial distribution of finely dispersed liquid droplets across a section of a generated flow, to enable a homogeneous dispersion ability of liquid droplets in a gas-and-droplet flow and stability of a cone of a sprayed liquid flow.
  • the technical result to be achieved by solving the technical tasks set forth involves providing a required electric safety during extinguishing by means of finely dispersed water of hotbed of fire occurred on electric installations which are under high voltage of up to 1 ,000 V without the necessity for cutting-off of electric power, and also providing an increase in the efficiency of extinguishing of various class fires (depending on kinds of burning substances and materials).
  • the indicated technical result is enabled by utilization of a fire-extinguishing apparatus comprising at least one reservoir for storage of a fire-extinguishing liquid, a liquid feeding system, a directed gas-and-droplet flow generating device including a discharge nozzle with a central profiled channel.
  • the nozzle channel consists of successively arranged portions, namely, a conical portion converging in the course of flow of the liquid, a cylindrical portion, and a conical portion diverging in the course of flow of the liquid.
  • the discharge nozzle additionally comprises at least four peripheral profiled channels with equally sized outlet apertures.
  • Each of said channels consists of successively arranged portions, namely, a conical portion converging in the course of flow of the liquid, a cylindrical portion, and a conical portion diverging in the course of flow of the liquid.
  • the outlet apertures of the peripheral channels are uniformly distributed around the circumference, on end surface of the nozzle casing, about the outlet aperture of the central profiled channel.
  • a pitch t between axes of symmetry of the nearby outlet apertures of the peripheral channels, around the circumference, is selected on the condition that: 1 -2 d o ⁇ t ⁇ 2.5d 0 , where d 0 is the diameter of the outlet apertures of the peripheral profiled channels.
  • the above-mentioned combination of essential features enables creation of conditions advantageous for the gas-and-droplet flows flowing from the outlet apertures of the profiled channels of the nozzle, said conditions facilitating the impingement of the liquid streams, splitting of the streams into fine droplets followed by mixing of separate streams and generation of a single finely dispersed gas-and-droplet flow having a high spatial homogeneity.
  • the generated gas-and-droplet flow is free from large-sized liquid inclusions as well as from substantial non-homogeneity in droplet sizes and in spatial distribution of droplets.
  • the maximum range of discharging the gas-and-droplet flow (more than 12 m) is achieved with the total length L t of each of the profiled channels selected on the condition that: L t >5d m i n , where d min is the diameter of the minimum section of the profiled channel.
  • the nozzle may be formed in various design embodiment versions.
  • the nozzle construction may be formed from a number of tubes whose flow- through channels define profiled channels of the nozzle.
  • the nozzle may be made in the form of an attachment with profiled channels provided within its casing.
  • - Fig. 1 is an pneumatic-hydraulic circuit of a fire-extinguishing apparatus
  • - Fig. 2 is a longitudinal section of a discharge nozzle with a central profiled channel and four peripheral profiled channels (scale 2: 1);
  • - Fig. 3 is a cross-section of the nozzle illustrated in Fig. 2 in a plane A-A;
  • - Fig. 4 is the nozzle illustrated in Fig. 2 and viewed from the side of outlet apertures of the profiled channels (in direction B);
  • FIG 5 is a longitudinal sectional view of a discharge nozzle with a central profiled channel and five peripheral profiled channels (scale 2:1);
  • - Fig. 6 is a cross-section of the nozzle illustrated in Fig. 5 in a plane C-C;
  • - Fig. 7 is a nozzle illustrated in Fig. 5 and viewed from the side of outlet apertures of profiled channels (in direction D).
  • a fire-extinguishing apparatus (see Fig. 1) comprises a reservoir 1 filled with a fire- extinguishing liquid, a pressurized gas cylinder 2, a gas pressure regulator 3, connection hoses 4, 5 and 6, a liquid feeding valve 7, and gas feeding valves 8 and 9.
  • the apparatus also includes a fire-hose lance designed for generation of a directed gas-and-droplet flow and including a liquid and gas mixing chamber 10 and a discharge gas-dynamic nozzle 1 1 having profiled channels.
  • a fire-hose lance designed for generation of a directed gas-and-droplet flow and including a liquid and gas mixing chamber 10 and a discharge gas-dynamic nozzle 1 1 having profiled channels.
  • either water or water containing foam former additives is used as a fire-extinguishing liquid and air is used as a working gas.
  • the mixing chamber 10 is designed for preliminary dispersion of a liquid in a gas flow and comprises a cylindrical casing with slot-type channels for feeding a dispersed liquid flow into a pressurized gas flow directed through an axial channel of the casing.
  • the fire-extinguishing apparatus may be free from a liquid and gas mixing chamber. In such embodiment of the apparatus, the liquid is directed immediately to an inlet of each profiled channel of the nozzle.
  • the discharge nozzle 1 1 includes a casing 12 with a fluoroplastic attachment 13 located within internal cavity of the casing.
  • the attachment 13 is equipped with a central channel 14 and four peripheral profiled channels 15.
  • the attachment 13 is fixed within the casing 12 by means of a captive nut 16.
  • Outlet apertures of the peripheral profiled channels 15 are uniformly distributed around the circumference, on end surface of the nozzle casing, about the outlet aperture of the central profiled channel 14.
  • the diameter d c of the outlet aperture of the central profiled channel 14 is 5 mm
  • the diameter of the outlet apertures of the peripheral profiled channels 15 is 4 mm to conform with the condition that: d 0 ⁇ d c ⁇ 1.4d 0
  • the peripheral profiled channels are arranged at an angle of 5° relative to an axis of symmetry of the central channel, along the course of outflow of the gas-and-droplet flow.
  • the pitch distance t between the axes of symmetry of nearby outlet apertures of the peripheral channels is 8 mm to conform to the condition that: 1.2d 0 ⁇ t ⁇ 2.5d 0 .
  • Each of the profiled channels 14 and 15 has a conical portion converging in the course of flow of the liquid, a cylindrical portion, and a conical portion diverging in the course of flow of the liquid.
  • the total length L t of each of the profiled channels is selected according to the condition that: L t > 5d m j n . With the diameter of a minimum section of the profiled channel mm, the total length L t of the channel in the example under consideration is 36 mm.
  • the gas pressure downstream of the gas pressure regulator 3 in a gas feeding mode is from about 0.9 MPa to about 1.1 MPa.
  • the water displaced by the pressurized gas from the reservoir 1 is directed via the hose 6 to the controlled liquid feeding valve 7 to be then fed into the liquid and gas mixing chamber 10.
  • the controlled gas feeding valve 9 is initially opened followed by opening at time delay of about 0.3 s of the liquid feeding valve 7. The above sequence of procedures, upon opening of the valves 7 and 9, results in preliminary delivering into the liquid and gas mixing chamber 10 of a gas flow supported liquid ejection into gas flow through the slot-type channels in the form of thin uniformly distributed streams.
  • gas-and-droplet flow is then speeded-up within the conical diverging portion of the profiled channel.
  • Conical finely dispersed gas-and-droplet flows are generated at the outlet of the profiled channels of the nozzle to impinge with one another in a space downstream of the nozzle section.
  • the generated high-velocity finely dispersed gas-and-droplet flow is directed by an operator onto a hotbed of fire, for example, on an electric installation which is under high voltage. Effective extinguishing of the hotbed of fire is provided due to a high velocity and uniform distribution of small liquid droplets in the vicinity of the flame.
  • the required electric resistance lengthwise of the flow is obtained by high spatial homogeneity of the gas-and- droplet flow and uniform filling of the volume of the generated fire-extinguishing substance with finely dispersed liquid droplets.
  • the uniformity in distribution of the fine dispersed liquid droplets within the space is improved.
  • the gas-and-droplet flow generated has a required electric resistance which is necessary for electric safety of an operator during extinguishing of fires on electric installations which are under a high voltage (up to 1,000 V).
  • the process of feeding the fire-extinguishing liquid into the liquid and gas mixing chamber is preliminarily stopped before gas feeding into said chamber is stopped.
  • Such a succession of actions is effectuated by initially closing of the liquid feeding valve 7 followed by closing, at time delay of about 0.3 s, of the gas feeding valve 8.
  • the gas-dynamic nozzle 1 1 see Fig. 1
  • the operator can extinguish fires on vast areas in an open space as well as in closed rooms.
  • a thin film of foaming substance is formed on the burning surface, said film being adapted for restricting ingress of oxygen from the environment into the fire zone.
  • the velocity of the liquid droplets reaching the fire is at least 5 m/s at the liquid feeding intensity of 0.4 1/s.
  • the velocity of the gas-and-droplet flow at the discharge of the gas- dynamic nozzle 1 1 approximates 80 m/s.
  • the backpack type fire-extinguishing apparatus may be advantageously used for extinguishing of solid material fires having a total area of about 60 m 2 , of burning inflammable liquid fires covering the area of more than 7 m 2 , and also for extinguishing of fires on electric installations which are under the voltage of up to 1,000 V.
  • the backpack type fire-extinguishing apparatus having a discharge nozzle equipped with various numbers of profiled channels was tested on an electric test bench.
  • the permeated leakage current value is no more than 0.5 mA.
  • the distance between the discharge nozzle and a target under the voltage of - 36 ⁇ 4kV A. C. with a frequency of 50 Hz was 1,000 mm.
  • the test results are represented in a table. Table
  • the leakage current value lengthwise of the generated flow did not exceed the permitted leakage current value of 0.5 mA.
  • the leakage current value was 0.65 mA and more, i.e., it was higher than a maximum permitted value.
  • the application of the invention provide a demanded level of electric resistance of the fire-extinguishing substance flow owing to an increase in the uniformity of spatial distribution of finely dispersed liquid droplets in the flow generated.
  • the electric safety requirements are observed in extinguishing of fires on electric installations, which are under the voltage of up to 1,000 V, and high efficiency in extinguishing of various class fires is achieved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Nozzles (AREA)

Abstract

Un appareil de lutte contre les incendies comporte un réservoir permettant de stocker un liquide d'extinction d'incendie, un système d'alimentation en liquide et un dispositif de génération d'écoulement dirigé de gaz et de gouttelettes. Une buse de décharge de l'appareil comporte un canal profilé central (14) et des canaux profilés périphériques (15). Chacun des canaux profilés est constitué par des parties agencées successivement comprenant une partie convergente conique, une partie cylindrique, et une partie divergente conique. Des ouvertures de sortie de canaux périphériques (15) sont distribuées uniformément autour de la périphérie à une distance de pas prédéterminée autour de l'ouverture de sortie du canal profilé central (14). La buse de décharge peut être formée en tant que fixation (13) avec les canaux profilés (14 et 15) prévus à l'intérieur du boîtier de tête de pulvérisation. L'utilisation de l'appareil de lutte contre les incendies au moyen d'une eau finement dispersée sur des installations électriques sous haute tension assure une sécurité électrique stable.
PCT/RU2007/000306 2006-06-22 2007-06-06 Appareil de lutte contre les incendies WO2008002189A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2006122074/12A RU2316369C1 (ru) 2006-06-22 2006-06-22 Устройство пожаротушения
RU2006122074 2006-06-22

Publications (1)

Publication Number Publication Date
WO2008002189A1 true WO2008002189A1 (fr) 2008-01-03

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ID=38596227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000306 WO2008002189A1 (fr) 2006-06-22 2007-06-06 Appareil de lutte contre les incendies

Country Status (2)

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RU (1) RU2316369C1 (fr)
WO (1) WO2008002189A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010074684A1 (fr) 2008-12-23 2010-07-01 Utc Fire & Security Corporation Extincteur et ensemble diffuseur de décharge
RU2416443C1 (ru) * 2010-05-14 2011-04-20 Олег Савельевич Кочетов Распылитель
CN102166398A (zh) * 2011-05-05 2011-08-31 东台市星海船用设备有限公司 断续式清水灭火器喷嘴
CN101357255B (zh) * 2008-09-11 2011-09-14 中国科学技术大学 渐开线弧形喷口消防灭火喷洒头
RU2521803C1 (ru) * 2013-07-08 2014-07-10 Олег Савельевич Кочетов Пневматический распылитель кочетова
RU2553957C1 (ru) * 2014-05-22 2015-06-20 Олег Савельевич Кочетов Распылитель кочетова
RU2553955C1 (ru) * 2014-05-14 2015-06-20 Олег Савельевич Кочетов Форсунка с полусферическим рассекателем
RU2553954C1 (ru) * 2014-04-16 2015-06-20 Олег Савельевич Кочетов Форсунка кочетова
RU2564278C1 (ru) * 2014-05-22 2015-09-27 Олег Савельевич Кочетов Пневматический распылитель кочетова
RU2617627C1 (ru) * 2016-03-18 2017-04-25 Олег Савельевич Кочетов Распылитель
RU2646719C2 (ru) * 2015-04-24 2018-03-06 Мария Михайловна Стареева Распылитель
RU181323U1 (ru) * 2018-04-11 2018-07-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) Форсунка для распыления рабочего состава биопрепарата
RU2665530C1 (ru) * 2017-02-17 2018-08-30 Олег Савельевич Кочетов Форсунка для распыливания жидкостей
RU2669176C2 (ru) * 2015-04-24 2018-10-08 Мария Олеговна Стареева Распылитель
RU2681640C1 (ru) * 2018-04-11 2019-03-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) Распылитель рабочего состава биопрепарата
CN110841222A (zh) * 2019-12-17 2020-02-28 徐工集团工程机械股份有限公司 泡沫均混管、混合泡沫灭火系统及其控制方法以及消防车
CN115666736A (zh) * 2020-04-10 2023-01-31 耶特克斯创新有限股份公司 具有消防喷嘴的灭火设备

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RU2383128C2 (ru) * 2008-03-04 2010-03-10 Государственное научное учреждение Всероссийский научно-исследовательский институт орошаемого земледелия РАСХН Способ распределения искусственного дождя по орошаемой площади
RU2401680C1 (ru) * 2009-08-06 2010-10-20 Олег Савельевич Кочетов Пеногенератор низкократный
RU2490041C1 (ru) * 2012-03-15 2013-08-20 Общество с ограниченной ответственностью "Темперо" Переносная установка пожаротушения
RU2696637C1 (ru) * 2019-03-04 2019-08-05 Российская Федерация, от имени которой выступает Министерство обороны Российской Федерации Устройство пожаротушения
RU202465U1 (ru) * 2020-07-14 2021-02-18 Публичное акционерное общество "КАМАЗ" Стенд пожарный

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RU2254155C1 (ru) * 2004-03-10 2005-06-20 Душкин Андрей Леонидович Переносная установка пожаротушения и распылитель жидкости

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101357255B (zh) * 2008-09-11 2011-09-14 中国科学技术大学 渐开线弧形喷口消防灭火喷洒头
EP2367600A4 (fr) * 2008-12-23 2014-10-29 Utc Fire & Security Corp Extincteur et ensemble diffuseur de décharge
WO2010074684A1 (fr) 2008-12-23 2010-07-01 Utc Fire & Security Corporation Extincteur et ensemble diffuseur de décharge
RU2416443C1 (ru) * 2010-05-14 2011-04-20 Олег Савельевич Кочетов Распылитель
CN102166398A (zh) * 2011-05-05 2011-08-31 东台市星海船用设备有限公司 断续式清水灭火器喷嘴
CN102166398B (zh) * 2011-05-05 2013-01-02 东台市星海船用设备有限公司 断续式清水灭火器喷嘴
RU2521803C1 (ru) * 2013-07-08 2014-07-10 Олег Савельевич Кочетов Пневматический распылитель кочетова
RU2553954C1 (ru) * 2014-04-16 2015-06-20 Олег Савельевич Кочетов Форсунка кочетова
RU2553955C1 (ru) * 2014-05-14 2015-06-20 Олег Савельевич Кочетов Форсунка с полусферическим рассекателем
RU2564278C1 (ru) * 2014-05-22 2015-09-27 Олег Савельевич Кочетов Пневматический распылитель кочетова
RU2553957C1 (ru) * 2014-05-22 2015-06-20 Олег Савельевич Кочетов Распылитель кочетова
RU2646719C2 (ru) * 2015-04-24 2018-03-06 Мария Михайловна Стареева Распылитель
RU2669176C2 (ru) * 2015-04-24 2018-10-08 Мария Олеговна Стареева Распылитель
RU2617627C1 (ru) * 2016-03-18 2017-04-25 Олег Савельевич Кочетов Распылитель
RU2665530C1 (ru) * 2017-02-17 2018-08-30 Олег Савельевич Кочетов Форсунка для распыливания жидкостей
RU181323U1 (ru) * 2018-04-11 2018-07-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) Форсунка для распыления рабочего состава биопрепарата
RU2681640C1 (ru) * 2018-04-11 2019-03-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) Распылитель рабочего состава биопрепарата
CN110841222A (zh) * 2019-12-17 2020-02-28 徐工集团工程机械股份有限公司 泡沫均混管、混合泡沫灭火系统及其控制方法以及消防车
CN110841222B (zh) * 2019-12-17 2023-08-18 徐工集团工程机械股份有限公司 泡沫均混管、混合泡沫灭火系统及其控制方法以及消防车
CN115666736A (zh) * 2020-04-10 2023-01-31 耶特克斯创新有限股份公司 具有消防喷嘴的灭火设备

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