CN106016258B - A kind of superelevation velocity of sound flame gun - Google Patents
A kind of superelevation velocity of sound flame gun Download PDFInfo
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- CN106016258B CN106016258B CN201610466204.3A CN201610466204A CN106016258B CN 106016258 B CN106016258 B CN 106016258B CN 201610466204 A CN201610466204 A CN 201610466204A CN 106016258 B CN106016258 B CN 106016258B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2209/00—Safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of superelevation velocity of sound flame guns, before it mainly includes burning chamber shell and is coaxially fixed on burning chamber shell respectively, the gun barrel housing at both ends and coaxial tailstock afterwards, combustion chamber in combustion chamber shell body, gun barrel in barrel casing body, two-way high pressure oxygen input pipe, two-way high pressure liquid fuel input pipe, catalytic ceramics piece, ignition electrode, powder feeding needle, water-cooled jacket etc., compared with conventional ultra high velocity of sound flame gun, the unique structure design of novel super-high velocity of sound flame gun of the present invention realizes effluxvelocity, particle rapidity greatly improves, the jet stream of 11 Mach cones can be achieved, effluxvelocity reaches 3500m/s, particle rapidity reaches 1500m/s.
Description
Technical field
The present invention relates to a kind of superelevation velocity of sound flame guns more particularly to a kind of with high effluxvelocity and particle rapidity
Novel super-high velocity of sound flame gun.
Background technology
Superelevation velocity of sound flame heat spray technology is widely used in industrial every field, has been increasingly becoming numerous machines
One of essential technique in tool manufacture course of products, such as turbine blade, valve, gate, piston rod, steel structure bridge
Deng, the performances such as wear-resisting, the corrosion-resistant, endurance of equipment surface can be effectively improved, play improve performance, prolong the service life
Effect.With development in recent years, at present both at home and abroad above applied to the superelevation velocity of sound flame heat spray technology in Practical Project
It is broadly divided into three categories：The first kind is using gaseous fuel（Such as propane）With the ultrahigh frequency speed heat spraying technology of oxygen combustion,
The DJ-2700 that such as METCO companies in the U.S. develop, the technology can realize that particle rapidity is 500-600m/s.Due to particle speed
Spend relatively low, the coating porosity obtained is higher, and binding force is insufficient, easily leads to coating localized delamination and relatively low particle speed
Degree can increase the oxidation of coating and influence coating quality；Second class is gaseous fuel（Such as propane）With atmospheric combustion and passing through
Pressure-air improves the ultrahigh frequency speed heat spraying technology of effluxvelocity, and the advantage of this technology applies to the material spray of low melting point
It applies, if material melting point improves, " fecula " can be generated, although very micro, largely affect coating material
Abrasion resistance, especially anti-erosion performance；Third class is liquid burning（Such as aviation kerosine）With the superelevation velocity of sound of oxygen combustion
Plasma spray technology, since the fluid combustions such as aviation kerosine thermal spraying is far above the gaseous fuels such as propane, this skill
Art can realize higher effluxvelocity, and particle rapidity reaches 1100m/s.But due to liquid fuel and oxygen mixing and
Burning is not enough, and easily generates carbon distribution, and carbon distribution is injected into coating surface, influences coating quality, and in the effluxvelocity
Under, powder particle can still be aoxidized, and particularly such as the metal-cermic coating of WC classes, oxidation and decarbonization can cause coating negative shadow
It rings.
More than superelevation velocity of sound flame heat spray technology classification depends primarily on the design and structure of spray gun, it can be seen that spray
Rifle is the part of most critical in superelevation velocity of sound flame heat spray system, and the design level of spray gun and structure type etc. determine entirely
The performance of system, and then determine the performance of coating.The superelevation velocity of sound flame gun both domestic and external retrieved at present（Such as
The superelevation velocity of sound flame gun of the introductions such as CN200920265424.5, CN01246986.6, CN03211072.3）All fail in grain
The burning adequacy of sub- speed, liquid fuel and oxygen, reasonable structure, installing and using convenience etc., acquirement is prominent conscientiously
It is broken.
Invention content
It is substantially carried in view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of effluxvelocity and particle rapidity
High novel super-high velocity of sound flame gun.
The novel super-high velocity of sound flame gun of the present invention is coaxially fixed on burning chamber shell including burning chamber shell and respectively
The gun barrel housing and coaxial tailstock of front and rear ends, combustion chamber shell body is interior to be equipped with coaxial combustion chamber, is formed therebetween closed
First water cooling cavity, barrel casing body is interior to be equipped with coaxial gun barrel, forms the second closed water cooling cavity, gun barrel housing therebetween
It is fixed with coaxial water-cooled jacket outside, forms the first closed return water cavity, the second water cooling cavity and the first backwater cavity therebetween
Body connects, between first and second water cooling cavity connection form water cooling access, be also provided with the second return water cavity on burning chamber shell, first,
Two return water cavitys connect to form return water access；
Chamber cavity of burning in Laval configuration, be inserted into combustion chamber and keep close with Inner Wall of Combustion Chamber by coaxial tailstock front end
Envelope, coaxial tailstock front end face are provided with annular groove, are equipped with catalytic ceramics piece in groove and are placed on the metallic sheath of catalytic ceramics on piece,
The periphery of catalytic ceramics piece inner headed face and metallic sheath keeps sealing with coaxial tailstock, the ring of catalytic ceramics piece and coaxial tailstock
Connected in star face forms gap, be equipped on coaxial tailstock the two-way high pressure oxygen input pipe that leads to the gap and with two-way hyperbaric oxygen
The two-way high pressure liquid fuel input pipe that gas input pipe is respectively communicated with, ignition electrode pass through coaxial tailstock to be inserted into combustion chamber sky from axle center
Intracavitary, the catalytic ceramics on piece have several through-holes around axle center annular spread, and powder feeding needle is inserted into across burning chamber shell
Chamber front end cavity, powder feeding needle shell form confined space with burning chamber shell, which connects with return water access；
Burning chamber shell is equipped with coolant intake and cooling water outlet mouth, and coolant intake and the first water cooling cavity bottom end connect
Logical, cooling water outlet mouth is connected with the second return water cavity bottom end.
In above-mentioned technical proposal, the through-hole of the catalytic ceramics on piece is the oblique through-hole towards combustion chamber axle center.
The water cooling access is equipped with many places hole sizer, and the hole sizer is set on burning chamber shell and gun barrel housing, by
Several apertures being distributed in a ring around combustion chamber axle center are formed.
Between the water-cooled jacket and gun barrel housing, between coaxial tailstock and burning chamber shell, gun barrel housing and burning chamber shell
Between using metal swivel nut lock.
The coolant intake and cooling water outlet mouth may be contained within the rear end of burning chamber shell.
A kind of novel super-high velocity of sound flame spray coating device, including above-mentioned novel super-high velocity of sound flame gun.
The beneficial effects of the present invention are：
（1）Compared with conventional ultra high velocity of sound flame gun, the unique structure of novel super-high velocity of sound flame gun of the invention
Design realizes effluxvelocity, particle rapidity greatly improves, it can be achieved that the jet stream of 11 Mach cones, effluxvelocity reach
3500m/s, particle rapidity reach 1500m/s.
（2）Present invention eliminates the connector in conventional ultra high velocity of sound flame gun between combustion chamber and gun barrel, using band
The combustion chamber of convergent-divergent channel is directly connected with gun barrel so that the structure of spray gun is simpler, and stability is more preferable, and can obtain
Higher bore pressure, can promote the raising of effluxvelocity.
（3）It is inputted using two-way oxygen and liquid fuel, liquid fuel is entered with certain pressure in oxygen pipeline, and high
The oxygen of pressure also has certain siphonage to liquid fuel so that liquid fuel smoothly enters in oxygen pipeline, prevents down
Stream.
（4）Liquid fuel can be mixed preferably with oxygen in oxygen pipeline, and by catalytic ceramics piece with
It can be further sufficiently mixed behind the gap that the annular groove face of coaxial tailstock is formed, well-mixed oxygen-fuel leads to again
Cross the aperture of catalytic ceramics on piece annular spread（Especially oblique through-hole）Into in combustion chamber, substantially stabilized burning is carried out, it can
To obtain higher, more stable, more fully burning capacity, and avoid generating carbon distribution, cleaner coating is obtained, improves and applies
Layer quality.
（5）The return water of current superelevation velocity of sound flame gun mainly uses two kinds of forms：Return water holster, return water holster are set
One end is mounted on gun barrel front end, is inserted into burning chamber shell by a water pipe metal tube, and when installation is needed gun barrel, return water rifle
The relative position of this three of set and burning chamber shell upper installing hole is adjusted to exactly match, and could complete installation, this is to installation
Bring inconvenience；Cancel this root metal tube on return water holster, water return outlet is set up directly on gun barrel housing forward end, and will
Cooling water pipe is connected on water return outlet, this water return pipeline is easily interfered with workpiece and tooling etc. during spraying, collided；
And the present invention is fixed in the form of cold water jacket as the return water of cooling water, and using swivel nut, is had and is stablized, installs
The features such as convenient, avoid the return water holster of conventional lance use there are it is difficult to install the problems such as, and also solve some sprays
Rifle is due to the problems such as water return pipeline is easily interfered with workpiece and tooling in spraying process using gun barrel front end return water.
（6）Many places hole sizer on water cooling access is set, chilled water flow velocity can be made more uniform, with combustion chamber and gun barrel outer surface
Contact it is more uniform, so as to realize better cooling effect, in addition, the return water access of cooling water can also be to powder feeding needle
It is cooled down, prevents powder feeding needle from causing damage due to high temperature.
Description of the drawings
Fig. 1 is superelevation velocity of sound flame gun structure diagram；
Fig. 2 is coaxial tailstock and catalytic ceramics chip architecture schematic diagram；
Fig. 3 is A-A sectional views；
Fig. 4 is B enlarged drawings；
Fig. 5 is F-F sectional views；
Fig. 6 is C enlarged drawings；
Fig. 7 is D enlarged drawings；
Fig. 8 is E enlarged drawings.
Specific embodiment
Specific embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Fig. 1 show a kind of preferable case study on implementation of novel super-high velocity of sound flame gun of the present invention, but is not limited only to this.Such as
Shown in Fig. 1, including two-way high pressure oxygen input pipe 1, two-way high pressure liquid fuel input pipe 2, coaxial tailstock 3, catalytic ceramics piece
4, ignition electrode 5, combustion chamber 6, gun barrel 7, powder feeding needle 8, burning chamber shell 9, gun barrel housing 10, water-cooled jacket 11, coolant intake 12,
Cooling water outlet mouth 13, water cooling access 14, return water access 15, locking swivel nut 16,17,18.
Coaxial tailstock 3 is mounted on the caudal end of spray gun, and fore-end injects combustion chamber 6, and keeps close with Inner Wall of Combustion Chamber
Envelope.Coaxially locked between tailstock 3 and burning chamber shell 9 by locking swivel nut 18.
It is illustrated in figure 2 the structure diagram of coaxial tailstock 3 and catalytic ceramics piece 4, two-way high pressure oxygen input pipe 1, two
Road high pressure liquid fuel input pipe 2 and catalytic ceramics piece 4 are installed on coaxial tailstock.
Hyperbaric oxygen tracheae is inserted into from coaxial tailstock rear portion, and setting is there are one aperture on high pressure oxygen pipeline, with highly pressurised liquid
Fuel conduit connects, and high pressure liquid fuel enters in oxygen pipeline to be mixed with oxygen, together into annular catalyst potsherd 4
The space of annular that is formed of an end face and the groove of coaxial tailstock front end face in obtain and further mix, and pass through and be mounted on
Several oblique through-holes of annular spread on catalytic ceramics piece 4 in the annular groove of coaxial 3 front end of tailstock（Such as Fig. 3）Into combustion chamber
In, the mixture of liquid burning and oxygen is by obtaining sufficient mixing during catalytic ceramics piece, and by catalytic ceramics piece
On oblique through-hole uniformly enter in combustion chamber, and keep the direction in axle center.
Metallic sheath is cased in catalytic ceramics piece periphery, 4 inner headed face of catalytic ceramics piece keeps sealing with coaxial tailstock, metal
It covers periphery also to keep sealing with coaxial tailstock 3, it is ensured that tempering will not be caused.
After the mixture of well-mixed fuel and oxygen enters the center of combustion chamber 6, by from coaxial tailstock
The ignition electrode 5 that combustion chamber is inserted into rear end axle center is lighted, and liquid fuel fully burns with oxygen generates the jet-flow of high speed, combustion gas
Jet stream is sprayed by being exported after the further speeding up of the Laval configuration in combustion chamber and gun barrel 7 from gun barrel, and effluxvelocity can
Reach 3500m/s.
Powder feeding needle 8 passes through burning chamber shell 9 to enter chamber front end horn mouth region, and powder is uniformly sent in flame stream
The heart, as shown in fig. 6, by high temperature, high-speed jet melting and acceleration after, powder particle can be ejected into the speed of 1500m/s
Workpiece surface forms coating.
Spray gun is cooled down by the way of recirculated water cooling, comprising the water cooling part by water inlet to spray gun front end and
By the return water part of spray gun front end to water outlet.
Confined space i.e. the first water cooling cavity, cooling water intake 12 is formed between burning chamber shell 9 and combustion chamber 6 to set
It is connected on burning chamber shell 9 with this cavity, the cooling water in this cavity carries out combustion chamber 6 and 8 front end of powder feeding needle
Continue the cavity to move forward between gun barrel 7 and gun barrel housing 10 after cooling（Second water cooling cavity）In, gun barrel is cooled down,
Then enter the cavity between gun barrel housing 10 and water-cooled jacket 11 by the looping pit of 10 front end of gun barrel housing（First backwater cavity
Body）In, the second return water cavity for being back to toward the direction of burning chamber shell 9 on burning chamber shell, 8 shell of powder feeding needle and combustion chamber
Confined space is formed between housing, is connected with return water access, the cooling water of reflux is cold to the progress of the latter half of powder feeding needle 8 simultaneously
But, it is finally flowed out from water outlet 13.
Many places hole sizer is provided on water cooling access, as shown in Fig. 4,5,7,8, i.e., in burning chamber shell 9, gun barrel housing 10
On be both provided with several apertures of annular spread, these apertures are in water cooling access, and cooling water passes through these annular spreads
Aperture, flow velocity can be kept more uniformly, more uniform with the contact on 7 outer surface surface of combustion chamber 6 and gun barrel, can be realized more preferable
Cooling effect.
Water inlet 12 and water outlet 13 are arranged on burning chamber shell 9, are in the rear portion of spray gun, avoid the pipe of water cooling
It causes to interfere during spraying in road.
Water-cooled jacket 11 can be easily mounted on gun barrel housing 10 by metal swivel nut 16, is avoided in conventional lance and is returned
Hydraulic giant covers situation difficult to install between burning chamber shell.
Coaxial tailstock 3 and the contact site of combustion chamber shell 9, the contact site of gun barrel housing 10 and burning chamber shell 9, water cooling
The contact site of set 11 and gun barrel housing 10 is respectively adopted metal swivel nut 15,16,17 and is locked.
Claims (6)
1. a kind of superelevation velocity of sound flame gun, which is characterized in that including burning chamber shell（9）And it is coaxially fixed on combustion chamber respectively
Housing（9）The gun barrel housing of front and rear ends（10）With coaxial tailstock（3）, it is coaxial in combustion chamber shell body to be equipped with combustion chamber（6）,
Therebetween the first closed water cooling cavity, gun barrel housing are formed（10）It is interior coaxial to be equipped with gun barrel（7）, formed therebetween close
The the second water cooling cavity closed, gun barrel housing（10）It is fixed with coaxial water-cooled jacket outside（11）, closed first is formed therebetween
Return water cavity, the second water cooling cavity are connected with the first return water cavity, are connected between first and second water cooling cavity and are formed water cooling access
（14）, burning chamber shell（9）On be also provided with the second return water cavity, first and second return water cavity connects to form return water access（15）；
Chamber cavity of burning is in Laval configuration, coaxial tailstock（3）Combustion chamber is inserted into front end（6）It is interior and with Inner Wall of Combustion Chamber keep
Sealing, coaxial tailstock front end face are provided with annular groove, catalytic ceramics piece are equipped in groove（4）And it is placed on the gold of catalytic ceramics on piece
Belong to set, the periphery of catalytic ceramics piece inner headed face and metallic sheath with coaxial tailstock（3）Keep sealing, catalytic ceramics piece（4）With
The annular groove face of coaxial tailstock forms gap, and the two-way high pressure oxygen input pipe for leading to the gap is equipped on coaxial tailstock
（1）And the two-way high pressure liquid fuel input pipe being respectively communicated with two-way high pressure oxygen input pipe（2）, ignition electrode（5）From axle center
It is inserted into chamber cavity across coaxial tailstock, the catalytic ceramics piece（4）It is upper to have several through-holes around axle center annular spread,
Powder feeding needle（8）Chamber front end cavity is inserted into across burning chamber shell, powder feeding needle shell forms confined air with burning chamber shell
Between, which connects with return water access；
Burning chamber shell（9）It is equipped with coolant intake（12）And cooling water outlet mouth（13）, coolant intake（12）With the first water
Cold cavity bottom end connection, cooling water outlet mouth（13）It is connected with the second return water cavity bottom end.
2. superelevation velocity of sound flame gun according to claim 1, which is characterized in that the catalytic ceramics piece（4）On
Through-hole is the oblique through-hole towards combustion chamber axle center.
3. superelevation velocity of sound flame gun according to claim 1, which is characterized in that the water cooling access（14）It is equipped with
Many places hole sizer, the hole sizer are set to burning chamber shell（9）And gun barrel housing（10）On, often locate hole sizer by around combustion chamber axle center
Several apertures being distributed in a ring are formed.
4. superelevation velocity of sound flame gun according to claim 1, which is characterized in that the water-cooled jacket（11）With barrel casing
Body（10）Between, coaxial tailstock（3）With burning chamber shell（9）Between, gun barrel housing（10）With burning chamber shell（9）Between use metal
Swivel nut is locked.
5. superelevation velocity of sound flame gun according to claim 1, which is characterized in that the coolant intake（12）It is and cold
But water outlet（13）It may be contained within burning chamber shell（9）Rear end.
6. a kind of superelevation velocity of sound flame spray coating device, which is characterized in that the device includes such as claim 1-5 any one of them
Superelevation velocity of sound flame gun.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466204.3A CN106016258B (en) | 2016-06-23 | 2016-06-23 | A kind of superelevation velocity of sound flame gun |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466204.3A CN106016258B (en) | 2016-06-23 | 2016-06-23 | A kind of superelevation velocity of sound flame gun |
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| Publication Number | Publication Date |
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| CN106016258A CN106016258A (en) | 2016-10-12 |
| CN106016258B true CN106016258B (en) | 2018-06-19 |
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| CN201610466204.3A Active CN106016258B (en) | 2016-06-23 | 2016-06-23 | A kind of superelevation velocity of sound flame gun |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916389B (en) * | 2017-11-16 | 2019-11-22 | 西北工业大学 | A kind of micron order supersonic speed suspension plasma spray apparatus and spraying method |
| CN112126887B (en) * | 2020-09-14 | 2022-07-08 | 水利部杭州机械设计研究所 | Air-gas type supersonic flame spray gun, spraying device and method for preparing metal ceramic coating |
| CN113909016A (en) * | 2021-11-03 | 2022-01-11 | 水利部杭州机械设计研究所 | Multi-combustion-chamber high-power high-efficiency supersonic flame thermal spraying spray gun and thermal spraying device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6245390B1 (en) * | 1999-09-10 | 2001-06-12 | Viatcheslav Baranovski | High-velocity thermal spray apparatus and method of forming materials |
| CN1519057A (en) * | 2003-01-21 | 2004-08-11 | 王泰兴 | Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources |
| CN201043190Y (en) * | 2007-06-14 | 2008-04-02 | 中国民航大学 | Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun |
| CN104498862A (en) * | 2015-01-04 | 2015-04-08 | 中国人民解放军装甲兵工程学院 | High-speed gas-electric arc composite thermal spraying method and spray gun used in same |
| CN205746820U (en) * | 2016-06-23 | 2016-11-30 | 水利部杭州机械设计研究所 | Novel super-high velocity of sound flame gun |
-
2016
- 2016-06-23 CN CN201610466204.3A patent/CN106016258B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6245390B1 (en) * | 1999-09-10 | 2001-06-12 | Viatcheslav Baranovski | High-velocity thermal spray apparatus and method of forming materials |
| CN1519057A (en) * | 2003-01-21 | 2004-08-11 | 王泰兴 | Axial sending-off powder type flame gun in supersonic speed using liquid fuel as energy sources |
| CN201043190Y (en) * | 2007-06-14 | 2008-04-02 | 中国民航大学 | Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun |
| CN104498862A (en) * | 2015-01-04 | 2015-04-08 | 中国人民解放军装甲兵工程学院 | High-speed gas-electric arc composite thermal spraying method and spray gun used in same |
| CN205746820U (en) * | 2016-06-23 | 2016-11-30 | 水利部杭州机械设计研究所 | Novel super-high velocity of sound flame gun |
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