SU882571A1 - Gas air mixer - Google Patents

Gas air mixer Download PDF

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Publication number
SU882571A1
SU882571A1 SU802885895A SU2885895A SU882571A1 SU 882571 A1 SU882571 A1 SU 882571A1 SU 802885895 A SU802885895 A SU 802885895A SU 2885895 A SU2885895 A SU 2885895A SU 882571 A1 SU882571 A1 SU 882571A1
Authority
SU
USSR - Soviet Union
Prior art keywords
air
gas
mixing
pipe
mixer
Prior art date
Application number
SU802885895A
Other languages
Russian (ru)
Inventor
Леонид Иванович Пушкарев
Иосиф Израилевич Маергойз
Original Assignee
Предприятие П/Я Г-4696
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 Предприятие П/Я Г-4696 filed Critical Предприятие П/Я Г-4696
Priority to SU802885895A priority Critical patent/SU882571A1/en
Application granted granted Critical
Publication of SU882571A1 publication Critical patent/SU882571A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
    • B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
    • B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
    • B01F25/45211—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube the elements being cylinders or cones which obstruct the whole diameter of the tube, the flow changing from axial in radial and again in axial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/834—Mixing in several steps, e.g. successive steps

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Accessories For Mixers (AREA)

Description

(54) ГАЗОВОЗДУШНЫЙ СМЕСИТЕЛЬ(54) GAS AIR MIXER

II

Изобретение относитс  к металлургии и машиностроению и может быть использовано в установках дл  приготовлени  экзотермической контролируемой атмосферы, широко примен емых дл  термической и химико-термической обработки металлов и срлавов.The invention relates to metallurgy and mechanical engineering and can be used in installations for the preparation of an exothermic controlled atmosphere, widely used for the thermal and chemical-thermal treatment of metals and copper metals.

Известны газовоздушные смесители, примен емые в различных горелочных устройствах теплоэнергетических установок , которые состо т из корпуса и трубки с р дом отверстий, рйсположенной в корпусе. В полости между трубкой и корпусом проходит воздух. Газ подают в трубку, и из р да-отверстий в виде струек он выходит в поток воздуха. За счет проникновени  струек газа в поток воздуха происходит перемешивание газа с воздухом to Air-gas mixers are known that are used in various burner devices of heat and power plants, which consist of a casing and a tube with a number of holes located in the casing. Air flows through the cavity between the tube and the housing. The gas is fed into the tube, and from the number of yes-holes in the form of streams it goes into the air stream. Due to the penetration of gas streams into the air stream, the gas is mixed with air to

Однако дл  хорошего смешивани  газа и воздуха газ должен подаватьс  через отверсти  с определенной скоростью в поток воздуха. Поэтому такие газовоздушные смесители работают с определенным коэффициентом расхода воздуха, например i 1,0, 1,1. При переменных коэффициентах расхода воздуха качество смешивани  газа и воздуха, особенно при малых расходах газа, ухудшаетс .However, in order to mix gas and air well, gas must be fed through the orifices at a certain rate into the air stream. Therefore, such gas-air mixers operate with a certain coefficient of air flow, for example, i 1.0, 1.1. With variable air flow rates, the mixing quality of gas and air, especially with low gas flow rates, deteriorates.

Известен также газовоздушный смеситель экзогазовых установок, состо щий из корпуса и трубки с отверсти 10 ми дл  выхода газа. При осуществлении процесса смешени  в нем газ подаетс  в трубку и из р да отверстий в виде струек выходит в поток воздуха Г2}..An air-gas mixer of exogas installations is also known, consisting of a casing and a tube with 10 holes for the escape of gas. In the process of mixing in it, gas is fed into the tube and out of a series of holes in the form of streams enters the air flow G2} ..

1515

Недостаток зтого смесител  заключаетс  в том, что с изменением соотношени  воздух:газ в смесителе мен етс  скорость выхода газа в поток воздуха, что приводит к некачествен20 ному смешению газа и воздуха при малых расходах газа.The disadvantage of this mixer is that with a change in the air: gas ratio in the mixer, the rate at which the gas enters the air stream changes, which leads to poor quality mixing of gas and air at low gas flow rates.

Claims (3)

Наиболее близким к изобретению  вхцетс  газовый смеситель, включающий корпус с перфорированными трубка ми и патрубками ввода и вывода компо нентов 3. Недостатком известного смесител   вл ютс  сложность конструкции и отсутствие двухстадийного смешивани  за счет чего понижаетс  качество смешени . Цель изобретени  - повышение каче ства смешейй  газа и воздуха посредством двухстадийного перемешивани . Пост-авленна  цель .достигаетс  тем что смеситель снабжен дроссельной шайбой, прикрепленной к наружной трубе перпендикул рно к ее оси за патрубком ввода воздуха. Причем дроссельна  шайба выполнен с соотношением живого сечени  шайбЫ к сечению отверстий перфорации внут4-5 ренней трубы На чертеже изображен предлагаемый смеситель, общий вид. Смеситель содержит наружную трубу 1, в которой закреплена внутренн   перфорированна  труба 2 с отверсти ми 3, патрубок 4 ввода воздуха, патрубок 5 ввода газа, патрубок 6 отвода газовоздушной смеси и дроссел ную шайбу 7, укрепленные на наружной трубе. Смеситель работает следующим об разом . Воздух в смеситель поступает через патрубок 4. Одновременно с воздухом подают газ, который через патрубок 5 поступает во внутреннюю трубу 2. Часть воздуха поступает через отверсти  3, расположенные до дроссельной шайбы в трубу 2, где происходит первичное смешение (1 стади ) воздуха с газом, а остальна  часть воздуха (II стади ) происходит через дроссельную шайбу 7, Первична  смесь газа с воздухом проходит через отверсти  3, расположенные после дроссельной шайбы в тру бе 2 и перемешиваетс  с остальным воздухом. Поток воздуха через отверсти  дп  первичного смешени  составл ет 1550% от всего поступающего воздуха. С целью прохождени  определенного количества воздуха на 1 стадии через отверсти  3 дроссельна  шайба выпол .иена с соотношением живого сечени  fv сечению отверсти  внутренней перорации трубы, равным -гГа- Это позвол ет также максимально улучшить перемешивание газа и воздуха. Установка дроссельной шайбы в корпусе перед отверсти ми на внутренней трубе и расположение на внутренней трубе перед дроссельной шайбой отверстий позвол ет за счет двухстадийного перемешивани  газа и воздуха улучшить качество смешени . Увеличение соотношени  живого сечени  шайбы к сечению отверстий перорации .внутренней трубы более 5:I влечет за собой ухудшение перемешивани  вследствие малых величин скоростей потока воздуха на первой стадии смешени , а уменьшение этого соотношени  менее 4:2 дает ухудшение перемешивани  вследствие малых величин скоростей потока воздуха на второй стадии смешени . Технико-экономический эффект состоит в качественном смешении газа и воздуха и повьш1енйи качества получаемой экзотермической контролируемой атмосферы. Формула изобретени  1.Газовоздушный смеситель, содержащий наружную и перфорированную внутреннюю трубы с патрубками ввода компонентов,отличающийс  тем, что, с целью улучшени  качества смешени  газа и воздуха посредством их двухстадийного перемешивани , он снабжен дроссельной шайбой, прикрепленной к наружной трубе перпендикул рно к ее оси за патрубком ввода возДуха . 2.Смеситель по п.1, о т л и чающ .ийс  тем, что дроссельна  шайба выполнена с соотношением живого сечени  шайбы к сечению отверстий перфорации внутренней трубы, равным 4-5/1-2. Источники информации, прин тые во внимание при экспертизе . Спейшер В.А. Сжигание газа на электростанци х и в промьш1ленности. М. , Энерги , 1967, с. 187. The closest to the invention is a gas mixer, comprising a housing with perforated tubes and nozzles for input and output of components 3. A disadvantage of the known mixer is the design complexity and the absence of a two-stage mixing, thereby lowering the quality of mixing. The purpose of the invention is to improve the quality of the mixtures of gas and air by means of two-stage mixing. The post target is achieved by the fact that the mixer is provided with a throttle washer attached to the outer pipe perpendicular to its axis behind the air inlet pipe. Moreover, the throttle washer is made with the ratio of the living section of the washer to the section of the perforation holes of the inside-5 of the inside pipe. The mixer contains an outer pipe 1, in which an inner perforated pipe 2 with openings 3, an air inlet pipe 4, a gas inlet pipe 5, a gas-air outlet pipe 6 and a throttle washer 7 fixed to the outer pipe are fixed. The mixer works as follows. The air enters the mixer through the pipe 4. At the same time, air is supplied with gas, which through pipe 5 enters the internal pipe 2. Part of the air enters through the holes 3 located before the throttle washer into the pipe 2, where the primary mixing of air with gas occurs and the rest of the air (Stage II) occurs through the throttle washer 7. The primary mixture of gas and air passes through the holes 3 located after the throttle washer in pipe 2 and mixes with the rest of the air. The air flow through the openings dp of primary mixing is 1550% of the total incoming air. In order to pass a certain amount of air at stage 1 through holes 3, a throttle washer is made of a yen with a ratio of the living cross section fv to the cross section of the internal peroration of the pipe equal to -Hg. This also maximizes the mixing of gas and air. Installing the throttle washer in the housing in front of the holes in the inner tube and positioning the inner tube in front of the throttle washer holes allows to improve the quality of mixing due to the two-stage mixing of gas and air. An increase in the ratio of the live section of the washer to the cross section of the perforation holes of the inner pipe more than 5: I results in deterioration of mixing due to small values of air flow rates in the first mixing stage, and a decrease in this ratio less than 4: 2 results in deterioration of mixing second stage mixing. The technical and economic effect consists in qualitative mixing of gas and air and improving the quality of the resulting exothermic controlled atmosphere. Claim 1. Gas-air mixer containing outer and perforated inner tubes with inlets for components, characterized in that, in order to improve the quality of gas and air mixing by means of two-stage mixing, it is equipped with a throttle washer attached to the outer tube perpendicular to its axis behind the air inlet pipe. 2. A mixer according to claim 1, about tl and chacti. The fact that the throttle washer is made with the ratio of the living section of the washer to the section of the perforation holes of the inner tube is 4-5 / 1-2. Sources of information taken into account in the examination. Speysher V.A. Gas combustion at power plants and in industrial environments. M., Energie, 1967, p. 187. 2.Васильев С.З. и др. Установки экзогаза. М., Энерги , 1977, с. 44. 2. Vasiliev S.Z. and others. Installation exogaz. M., Energie, 1977, p. 44. 3.Авторское свидетельство СССР №670319, кл. В 01 F 3/02, 1978.3. USSR author's certificate №670319, cl. B 01 F 3/02, 1978.
SU802885895A 1980-02-22 1980-02-22 Gas air mixer SU882571A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU802885895A SU882571A1 (en) 1980-02-22 1980-02-22 Gas air mixer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU802885895A SU882571A1 (en) 1980-02-22 1980-02-22 Gas air mixer

Publications (1)

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SU882571A1 true SU882571A1 (en) 1981-11-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140219048A1 (en) * 2011-10-11 2014-08-07 Kawasaki Jukogyo Kabushiki Kaisha Fluid mixer and heat exchange system using same
MD906Z (en) * 2014-12-23 2015-12-31 Институт Сельскохозяйственной Техники "Mecagro" Device for producing warm air for dryers
MD1097Z (en) * 2016-06-03 2017-12-31 Институт Сельскохозяйственной Техники "Mecagro" Device for producing warm air for dryers
RU227923U1 (en) * 2024-04-06 2024-08-09 Виктор Александрович Емелин MIXING CHAMBER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140219048A1 (en) * 2011-10-11 2014-08-07 Kawasaki Jukogyo Kabushiki Kaisha Fluid mixer and heat exchange system using same
US10092886B2 (en) * 2011-10-11 2018-10-09 Kawasaki Jukogyo Kabushiki Kaisha Fluid mixer and heat exchange system using same
MD906Z (en) * 2014-12-23 2015-12-31 Институт Сельскохозяйственной Техники "Mecagro" Device for producing warm air for dryers
MD1097Z (en) * 2016-06-03 2017-12-31 Институт Сельскохозяйственной Техники "Mecagro" Device for producing warm air for dryers
RU227923U1 (en) * 2024-04-06 2024-08-09 Виктор Александрович Емелин MIXING CHAMBER

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