CN1519057A - Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources - Google Patents
Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources Download PDFInfo
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- CN1519057A CN1519057A CNA031109160A CN03110916A CN1519057A CN 1519057 A CN1519057 A CN 1519057A CN A031109160 A CNA031109160 A CN A031109160A CN 03110916 A CN03110916 A CN 03110916A CN 1519057 A CN1519057 A CN 1519057A
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Abstract
An axially feeding powder type supersonic flame spraying gun using liquid fuel as energy source is composed of a casing and the serially connected gum tube, convergent divergent nozzle, combustion chamber and tail unit. A main water cooling channel is formed between said casing and the serially connected units. In said tail unit, their is a water cooled powder feeding tube surrounded by 2-12 liquid fuel spraying tubes. Its advantages are high flowing speed of powder, fully smelting of powder, and high quality of coated layer.
Description
Affiliated technical field
The present invention relates to the spray gun of surface, a kind of spray metal usefulness, especially is the energy with the liquid fuel, the supersonic spray gun of axial DC powder feeding formula.
Background technology
At present, known supersonic spray gun structure is a gun barrel in gun case, Laval nozzle, the combustion chamber, tailstock is mechanical connection successively, form the water-cooled path with the gun case inwall simultaneously, the import and export of this path are in the layout of on the section of gun case front and back, gun case leading portion side direction is furnished with tangential powder feeding path, the tailstock axial centre is furnished with the transfer the fuel path, the spray gun of this kind structure, find that in use the single tube transfer the fuel causes chamber temperature low, and temperature, the pressure field inequality, be only applicable to low-melting-point metal and alloy powder, particularly adopt tangential automatic powder feeding system to powder size, form is strict, the powder gun barrel inwall that easily bonds, unfused powder produces powerful frictional force along gun barrel inwall high-speed motion, barrel life is descended, powder feeding efficient is low, and coating and work piece adhesion and deposition effect are relatively poor, and the coating density does not often satisfy specification requirement yet.In addition, combustion chamber heat loss is big, increases processing cost, and each interface of spray gun is rigid the connection with the external process pipe, and it is easy to break, easily broken that exterior tube not only often takes place, and hand-held feels extremely heavy, consume one's strength, and is not ideal in fact.
Summary of the invention
In order to overcome above-mentioned weak point, the present invention will provide a kind of axial powder feed, multiple tracks fuel nozzle, surface, high-temperature region to increase heat-resisting protective coating, the Laval nozzle inner curve is applicable to that more high-velocity fluid moves, powder feeding go directly high temperature, low pressure, high velocity, powder smelting is abundant, less demanding to powder size, form, wide accommodation, fuel atomization is abundant, adopts to penetrate that to inhale principle be energy axial powder feed formula supersonic spray gun with the liquid fuel to what insert that powder feeding pipe in the combustion zone increases by one water-cooled branch road.
The technical solution adopted for the present invention to solve the technical problems is: in gun case, gun barrel, Laval nozzle, combustion chamber and tailstock be mechanical connection successively, and be formed for cooling off gun barrel with the gun case inwall, Laval nozzle, the main water-cooled path of combustion chamber and tailstock, this main water-cooled path one end links to each other through the cooling water inlet of tube connector with the gun case front portion, the other end links to each other with the coolant outlet at gun case rear portion, the Laval nozzle inner curve is non-standard jet curve, the combustion chamber inwall is provided with refractory coating, be axially arranged with the water-cooled powder feeding pipe in the tailstock, water-cooled path in this pipe and main water-cooled via set are parallel branch, its import, outlet comes together on the main water-cooled path coolant outlet section, its actual internal area is less than main water-cooled path, form the jet absorption type structure, be provided with the liquid fuel playpipe around the water-cooled powder feeding pipe.Water-cooled powder feeding pipe and liquid fuel playpipe axially are provided with in tailstock, and wherein water-cooled powder feeding pipe one end inserts in the combustion chamber, insert section surface and are provided with refractory coating, and the liquid fuel playpipe props up around the parallel even distribution 2-12 of water-cooled powder feeding pipe.
In addition, each technology mouth of pipe of the present invention all links to each other with the variable angle joint, is intended to overcome the bending of external process pipe, is convenient to operate and link with manipulator.
The invention has the beneficial effects as follows: the combustion chamber is high temperature resistant, temperature, pressure field are evenly distributed, the powder flow velocity is big, and fusing does not fully have the bonding phenomenon and takes place in the gun barrel, powder feeding efficient height, preparation coating density is big, and porosity is low, and the coating adhesion is strong, the deposition efficiency height, thermal losses is little, and fuel saving requires not tight to powder size, form, applied widely, all can use as metal dust, carbide ceramics powder and oxide ceramic powder, prolong gun barrel service life and uninterrupted working time, reduce production costs, easy to operate, be easy to link with manipulator.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural principle schematic diagram of the present invention.
Fig. 2 is a combustion chamber inner surface refractory coating schematic diagram among Fig. 1.
Fig. 3 is a water-cooled powder feeding pipe outer surface refractory coating schematic diagram among Fig. 1.
1. gun cases among the figure, 2. gun barrel, 3. Laval nozzle, 4. main water-cooled path, 5. combustion chamber, 6. tailstock, 7. liquid fuel playpipe, 8. water-cooled powder feeding pipe, 9. water-cooled path, 10. outlet, 11. imports, 12. coolant outlets, 13. cooling water inlet, 14. tube connector, refractory coating in 15. combustion chambers, 16. water-cooled powder feeding pipe surface refractory coating.
The specific embodiment
By Fig. 1-3 as can be known, in gun case (1), be provided with gun barrel (2), Laval nozzle (3), combustion chamber (5) and tailstock (6), and mechanical connection successively, gun barrel (2), Laval nozzle (3), combustion chamber (5) and tailstock (6) are formed for cooling off gun barrel (2) with gun case (1) inner surface, Laval nozzle (3), the main water-cooled path (4) of combustion chamber (5) and tailstock (6), this path one end links to each other through the anterior cooling water inlet (13) of tube connector (14) and gun case (1), the other end links to each other with the coolant outlet (12) at gun case (1) rear portion, the inner caliber of Laval nozzle (3) is divided into necking segment, expand cervical part of esophagus, its section dotted circle slip, form are non-standard jet curve.Combustion chamber (5) inwall is provided with refractory coating (15), material is zirconia or aluminium oxide etc., thickness is the 0.05-0.5 millimeter, tailstock (6) axial centre portion is provided with water-cooled powder feeding pipe (8), the one end inserts in the combustion chamber (5), water-cooled path (9) in this pipe is parallel branch with main water-cooled path (4) in its outlet section group, its import (11), outlet (12) comes together on the coolant outlet section of main water-cooled path (4), its flow area is less than main water-cooled path, section ratio is 1: 0.05-1: 0.4, form the jet absorption type structure, water-cooled powder feeding pipe (8) is propped up liquid fuel playpipe (7) along the uniform 2-12 of its axially parallel on every side, and the water-cooled powder feeding pipe is inserted the part of combustion chamber, and its surface is provided with refractory coating (16), material is zirconia or aluminium oxide etc., and thickness is the 0.05-0.5 millimeter.
Claims (2)
1. one kind is energy axial powder feed formula supersonic spray gun with the liquid fuel, in gun case, gun barrel, Laval nozzle, combustion chamber and tailstock be mechanical connection successively, and be formed for cooling off gun barrel with the gun case inwall, Laval nozzle, the main water-cooled path of combustion chamber and tailstock, this main water-cooled path one end links to each other through the cooling water inlet of tube connector with the gun case front portion, the other end links to each other with the coolant outlet at gun case rear portion, it is characterized in that: the combustion chamber inwall is provided with refractory coating, be axially arranged with the water-cooled powder feeding pipe in the tailstock, water-cooled path in this pipe and main water-cooled via set are parallel branch, its import, outlet comes together on the coolant outlet section of main water-cooled path, its actual internal area is less than main water-cooled path, form the jet absorption type structure, be provided with the liquid fuel playpipe around the water-cooled powder feeding pipe.
2. according to claim 1 is energy axial powder feed formula supersonic spray gun with the liquid fuel, it is characterized in that: water-cooled powder feeding pipe and liquid fuel playpipe axially are provided with in tailstock, wherein water-cooled powder feeding pipe one end inserts in the combustion chamber, insert section surface and be provided with refractory coating, the liquid fuel playpipe props up around the even parallel distribution 2-12 of water-cooled powder feeding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031109160A CN1519057A (en) | 2003-01-21 | 2003-01-21 | Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031109160A CN1519057A (en) | 2003-01-21 | 2003-01-21 | Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1519057A true CN1519057A (en) | 2004-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031109160A Pending CN1519057A (en) | 2003-01-21 | 2003-01-21 | Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources |
Country Status (1)
| Country | Link |
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| CN (1) | CN1519057A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063534A (en) * | 2013-01-10 | 2013-04-24 | 湘潭大学 | Testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades |
| CN105324174A (en) * | 2013-04-19 | 2016-02-10 | 蒂森克虏伯工业解决方案股份公司 | Method and device for producing shell catalysts |
| CN106016258A (en) * | 2016-06-23 | 2016-10-12 | 水利部杭州机械设计研究所 | Novel hypersonic flame spraying gun |
| CN112384304A (en) * | 2018-07-06 | 2021-02-19 | 日产自动车株式会社 | Nozzle for cold spraying and cold spraying device |
| CN113426593A (en) * | 2021-07-29 | 2021-09-24 | 湖南西爱斯流体控制设备有限公司 | Supersonic flame spray gun |
| CN113909015A (en) * | 2021-11-02 | 2022-01-11 | 水利部杭州机械设计研究所 | Automatic supersonic flame thermal spraying spray gun in narrow space and thermal spraying device thereof |
-
2003
- 2003-01-21 CN CNA031109160A patent/CN1519057A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063534A (en) * | 2013-01-10 | 2013-04-24 | 湘潭大学 | Testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades |
| CN105324174A (en) * | 2013-04-19 | 2016-02-10 | 蒂森克虏伯工业解决方案股份公司 | Method and device for producing shell catalysts |
| US9737886B2 (en) | 2013-04-19 | 2017-08-22 | Thyssenkrupp Industrial Solutions Ag | Method and device for producing shell catalysts |
| CN106016258A (en) * | 2016-06-23 | 2016-10-12 | 水利部杭州机械设计研究所 | Novel hypersonic flame spraying gun |
| CN106016258B (en) * | 2016-06-23 | 2018-06-19 | 水利部杭州机械设计研究所 | A kind of superelevation velocity of sound flame gun |
| CN112384304A (en) * | 2018-07-06 | 2021-02-19 | 日产自动车株式会社 | Nozzle for cold spraying and cold spraying device |
| US11891699B2 (en) | 2018-07-06 | 2024-02-06 | Nissan Motor Co., Ltd. | Cold spray nozzle and cold spray device |
| CN113426593A (en) * | 2021-07-29 | 2021-09-24 | 湖南西爱斯流体控制设备有限公司 | Supersonic flame spray gun |
| CN113909015A (en) * | 2021-11-02 | 2022-01-11 | 水利部杭州机械设计研究所 | Automatic supersonic flame thermal spraying spray gun in narrow space and thermal spraying device thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |