WO2004110644A1 - Installation a detonation de gaz destinee a l'application de poudres - Google Patents

Installation a detonation de gaz destinee a l'application de poudres Download PDF

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Publication number
WO2004110644A1
WO2004110644A1 PCT/AZ2003/000005 AZ0300005W WO2004110644A1 WO 2004110644 A1 WO2004110644 A1 WO 2004110644A1 AZ 0300005 W AZ0300005 W AZ 0300005W WO 2004110644 A1 WO2004110644 A1 WO 2004110644A1
Authority
WO
WIPO (PCT)
Prior art keywords
holes
embodied
detonation
mixing
gas
Prior art date
Application number
PCT/AZ2003/000005
Other languages
English (en)
Russian (ru)
Inventor
Siyad Mirza Aga Oglu Movsumov
Kakhraman Sojun Oglu Gasanov
Original Assignee
Kadyrov, Togrul Abdulla Oglu
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 Kadyrov, Togrul Abdulla Oglu filed Critical Kadyrov, Togrul Abdulla Oglu
Priority to AU2003302936A priority Critical patent/AU2003302936A1/en
Publication of WO2004110644A1 publication Critical patent/WO2004110644A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0006—Spraying by means of explosions

Definitions

  • the invention relates to a coating technique and can be used for applying metal, cermet and ceramic coatings in aircraft and shipbuilding, space technology, textile and paper industries, in the manufacture of measuring instruments, chemical apparatus engineering, etc. using the detonation-gas method .
  • detonation spraying is the possibility of coating with less thermal energy introduced into the sprayed product and particles of the sprayed material.
  • the disadvantage of the installation is the heterogeneity of the explosive mixture charge, due to the lack of means that turbulent the movement of gas jets entering the mixing chamber, and the short duration of mixing in the chamber space.
  • a disadvantage of the known device is that the mixing of fuel, oxidizer and neutral gas occurs in the space of one chamber, which does not provide strict constancy of the given modes and does not allow to obtain a sufficiently homogeneous mixture and, ultimately, leads to a deterioration in the quality of the coating.
  • the closest in technical essence and the achieved result is the installation (gun) for detonation coating containing a detonation tube closed at one end, a powder dispenser and a mixing device made with two interconnected chambers, while the first chamber along the path of the gas is equipped with a separation partition with through holes providing communication between the divided sections, and the second with a source of supply of the second ingredient of the explosive mixture (3).
  • a disadvantage of the known device is that it does not provides a sufficiently deep mixing of hydrocarbon gas with oxygen and the fact that during the operation of the device there is a discharge of the working gas mixture in the opposite direction, leading to its excessive consumption and, on the other hand, to prematurely ignite the gas mixture before it enters the working area. And also the fact that before starting work, the installation (gun) needs to be warmed up, about 10 minutes and shoot at idle.
  • the objective of the proposed invention is a thorough mixing of the supplied gases, reducing the consumption of working gases and expanding technological capabilities in the detonation coating of powder coatings.
  • the device further comprises three installed in series relative to the first mixing element with holes, where the holes of the first element are made in the form four radial channels converging at right angles in the central cavity, the holes of the second element are made in the form of a labyrinth channel, the holes of a small section of the third element are made obliquely in the tangential direction to the axis of the device on two concentric planes, holes the fourth element is made in the form of radial channels at an angle of 30 ° relative to each other.
  • the essence of the proposed design of the mixing device is that it, reliably separating the receiving cavity for freshly incoming gases from the combustion chamber, at the same time allows a thoroughly mixed mixture of gases to be supplied to the combustion chamber and thereby makes it possible to stabilize the processes of excitation and propagation of the detonation wave.
  • the movement of a gas mixture in a constantly changing direction and high gas flow rates can reduce the likelihood of the ignited gas mixture spreading in the opposite direction, which in turn reduces the negative effect of the thermal effect of the reaction on a fresh portion of the gases before they enter the mixer.
  • the design of the first element where the holes made in the form of channels at an angle of 90 °, allow intensive mixing of the pre-mixed gas stream (hydrocarbon gas + oxygen + neutral gas - air or nitrogen), while preventing the ignition of combustible gas, and thereby facilitate the transition it into the second element, where the holes in the form of a zigzag labyrinth channel, help to more thoroughly mix the gas stream due to the multiple sharp change in its direction.
  • the design of the third element where on two concentric planes there are 32 holes in the form of channels of small cross section, makes it possible to significantly accelerate the movement of the gas stream, which through the transition cavity and through holes of the fourth element falls into a zone of increased turbulence, in which the final mixing of the incoming gas stream takes place, then following to the combustion chamber, where the spark plug is located.
  • the design of the housing of the mixing device of the installation is compact, less than the known installations, metal consumption, high efficiency of gas mixing, as well as reliability and durability during operation.
  • the proposed device allows you to thoroughly mix the gases and thereby increase the power ratio of the combustible gas, due to intense turbulence, stalactites are not formed on the parts in the chamber; the service life of parts operating in an aggressive environment is increased; the amount of routine maintenance is reduced.
  • Figure 1 presents a General view of the installation for detonation coating in section;
  • figure 2 presents a section of a mixing device; in Fig.3 section A-A; in FIG. 4 section BB; in Fig. 5 is a section GG; 6 is a section B-B.
  • the installation for detonation coating contains: (detonation tube) detonation bore-1, where the claimed details of the mixing device are arranged in series: a gas feeder 2, through an annular cavity is connected to the first element of the mixing device-3, the openings of which are made in the form of radial channels-4, then the second element-5 is located, the holes of which are made in the form of a zigzag labyrinth channel-6, which passes through the peripheral annular cavity into the third element-7, the openings of which are made with channels of small section-8, located obliquely on two concentric planes tangentially at an angle of 30 ° to the axis of the device, where through the transitional cavity it connects with the holes of the fourth element -9, made radially, by channels-10 and, finally, passing into the combustion chamber-11, where the spark plug-12 is located.
  • the mixing of working gases in the device for detonation coating 1 is carried out in four stages: after feeder 2, the gas mixture through the annular cavity formed by the first element-3, having a hole-4 in the form of radial channels located at an angle of 90 ° relative to the axis of the output channel in which, after intensive mixing resulting from the convergence of radial gas flows in the center of the first element, the gas stream enters the second element-5, the openings of which are a labyrinth channel in which the phenomenon of gas motion changes several times in the opposite direction, i.e., by 180 ° due to its zigzag pattern.
  • the gas stream when leaving the labyrinth channel, enters the peripheral annular cavity of the third element-7. with openings-8 of small section.
  • the accelerated gas flow exiting at high speed from 32 holes of small cross-section enters the transition cavity, which has exits to the fourth element-9, where the openings -10 are made radially, through which the gas flow enters the zone of increased turbulence, where after the final, intensive mixing it enters the combustion chamber-11, equipped with a spark plug 12, by means of which the working gas mixture is ignited.

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  • Nozzles (AREA)

Abstract

L'invention s'applique aux techniques d'application de revêtements et peut s'utiliser pour appliquer des revêtements métalliques, métallocéramiques ou céramiques en industrie aérospatiale et en construction navale, en industrie textile et de papier, dans la fabrication d'instruments de mesure, d'équipements chimiques, etc., par procédé de détonation de gaz. L'installation destinée à l'application de revêtement par détonation qui contient un tube de détonation obturé d'un côté dans lequel sont montés en séquence un dispositif de mélangeage et un doseur de poudres, contient un dispositif de mélangeage disposé entre le mécanisme d'alimentation de gaz et la chambre d'allumage, qui se présentent comme quatre éléments de mélangeage avec des trous. Le premier élément se présente comme quatre canaux radiaux qui convergent à 90° dans la cavité centrale; le deuxième se présente comme un canal en labyrinthe; le troisième élément comporte des canaux de faible section, inclinés tangentiellement sur deux plans concentriques, orientés à 30° par rapport à l'axe du dispositif; et les orifices du quatrième élément sont traversants radialement et communiquent avec la sortie dans le canal central de l'installation.
PCT/AZ2003/000005 2003-05-08 2003-09-02 Installation a detonation de gaz destinee a l'application de poudres WO2004110644A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003302936A AU2003302936A1 (en) 2003-05-08 2003-09-02 Gas detonation device for powder coating

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AZA20030094 2003-05-08
AZA20030094 2003-05-08

Publications (1)

Publication Number Publication Date
WO2004110644A1 true WO2004110644A1 (fr) 2004-12-23

Family

ID=33545814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AZ2003/000005 WO2004110644A1 (fr) 2003-05-08 2003-09-02 Installation a detonation de gaz destinee a l'application de poudres

Country Status (2)

Country Link
AU (1) AU2003302936A1 (fr)
WO (1) WO2004110644A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU671089A1 (ru) * 1977-07-20 1984-03-30 Центральное Конструкторское Бюро "Ленинская Кузница" Установка дл детонационного нанесени покрытий
SU1827872A1 (ru) * 1989-12-19 1996-03-27 Г.Ю. Барыкин Устройство для детонационного напыления покрытий
WO1997023300A1 (fr) * 1995-12-26 1997-07-03 United Technologies Corporation Systeme d'alimentation en gaz par effet de recul pour canon a detonation
WO1999012653A1 (fr) * 1997-09-11 1999-03-18 Aerostar Coatings, S.L. Systeme d'injection de gaz dans un pistolet de projection par detonation
RU2176162C2 (ru) * 1995-12-26 2001-11-27 Аэростар Коатингс, С.Л. Лабиринтное устройство подачи газа и способ предотвращения обратной вспышки в детонационной пушке

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU671089A1 (ru) * 1977-07-20 1984-03-30 Центральное Конструкторское Бюро "Ленинская Кузница" Установка дл детонационного нанесени покрытий
SU1827872A1 (ru) * 1989-12-19 1996-03-27 Г.Ю. Барыкин Устройство для детонационного напыления покрытий
WO1997023300A1 (fr) * 1995-12-26 1997-07-03 United Technologies Corporation Systeme d'alimentation en gaz par effet de recul pour canon a detonation
RU2176162C2 (ru) * 1995-12-26 2001-11-27 Аэростар Коатингс, С.Л. Лабиринтное устройство подачи газа и способ предотвращения обратной вспышки в детонационной пушке
WO1999012653A1 (fr) * 1997-09-11 1999-03-18 Aerostar Coatings, S.L. Systeme d'injection de gaz dans un pistolet de projection par detonation

Also Published As

Publication number Publication date
AU2003302936A1 (en) 2005-01-04

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