CN201043190Y - Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun - Google Patents
Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun Download PDFInfo
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- CN201043190Y CN201043190Y CNU2007200963902U CN200720096390U CN201043190Y CN 201043190 Y CN201043190 Y CN 201043190Y CN U2007200963902 U CNU2007200963902 U CN U2007200963902U CN 200720096390 U CN200720096390 U CN 200720096390U CN 201043190 Y CN201043190 Y CN 201043190Y
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Abstract
The utility model relates to a combustion-supporting supersonic flame spray lance with liquid fuel-oxygen-air mixed inside of the lance. The utility model contains an axial direction backseat, an oil nozzle, a combustion maintenance device, a sparking plug, a back water cooling casing, a combustion chamber, a lance larynx, a power feeding section, a lance tube, a back fixed ring, a middle fixed ring, a front fixed ring, a front water cooling casing, a right angle water conduction pipe and a straight water conduction pipe. The supersonic flame spray lance provided by the utility model can adjust the temperature of plume flow, and so the utility model can solve the problem of the sediment and locking of the lance mouth power on the premise of not sacrificing the spray coating depositional rate, and also the utility model can solve the problem of low coating depositional rate, and so the utility model can improve the coating quality, and at the same time can reduce the making cost of the coating. Besides, when the low oxygen content mixed gas or air are used to support the combustion, the combustion maintenance device also can keep having a higher temperature even when the temperature of the combustion chamber reduces quickly caused by using cooling water, and so the stable and continuous combustion is ensured. Finally, the spraying and coating of different materials within respective optimum temperature range are realized.
Description
Technical field
The utility model belongs to technical field of hot, particularly relates to and mixes combustion-supporting hypersonic flame spraying rifle in a kind of liquid fuel-oxygen-air cannon.
Background technology
Gas or liquid fuel-oxygen supersonic flame (HVOF) spraying technology is a kind of the eighties invention, the important hot-spraying techniques method of the developed application of the nineties, it is mainly contributed and is that this method can increase substantially the density of hot spray coating, hardness and bonding strength, improve the state of unrelieved stress in the coating, can also significantly reduce the oxide content in the coating simultaneously.In the HVOF paint finishing, most important device is the hypersonic flame spraying rifle, and this device has experienced a development course quite rapidly.The 1950's, Linde Division Union Carbide has developed a kind of axial powder feed water cooling throat incendiary spray gun, its advantage is simple in structure, can reduce the surface-area of combustion chamber, thereby reduce the thermosteresis of spray gun, shortcoming be the flight velocity of sprayed particle can only reach flame flow velocity degree 25%～50%, thereby the spraying coating quality relatively poor.In order to improve coating quality, Meteco company improves this spray gun, it has simplified the structure of spray gun, and between side wall of combustion chamber and combustionmaterial, be provided with one can the cooling combustion chamber break-in flowing air floor, it not only can reduce the calorific loss of sidewall of combustion chamber, but also flame stream is compressed.Yet the diffusion that the main drawback of this spray gun is a cooling air in flame stream sprays the oxidisability that flame flows with mixing to have strengthened, thereby causes increasing of oxide content in the coating.The eighties in 20th century, people such as Browning design had the spray gun than the major diameter combustion chamber, and purpose is to improve the pressure of combustion chamber, and then improved spraying flame stream and particulate flight velocity.Compare with the spray gun that Meteco company designs, the flight velocity of this spray gun sprayed particle is high and heating is more abundant.According to the difference of combustion-chamber shape, can see 7 kinds of HVOF spray equipments in the market, they are respectively Jet-Kote, DiamondJet, TopGun, CDS, HV2000, JP5000 and Aermrayo.Wherein Jet-Kote is the spray gun of right angle combustion chamber/axial powder feed the earliest, the WC-Co coating of this spray gun spraying has suitable with the detonation flame spraying coating even also high wear resisting property, but its shortcoming is the right angle nozzle has increased thermosteresis, and too high thermal gradient may cause breaking of spray gun.In addition, the right angle jet pipe also can weaken and reduce the kinetic energy and the temperature of flame stream before particle enters, thereby causes spray efficiency to descend.1991, HobartTAFA company was developed into the HVOF spray gun-JP5000 with axial combustion chambers.This HVOF spray gun is with the junction of powder by throat and gun barrel, and promptly the compression zone (flame flow diameter smallest region) of supersonic speed flame stream is radially sent in the flame.Experimental result shows that radially the spray efficiency of the HVOF spray gun unit energy of powder feeding is the twice of axial powder feed HVOF spray gun.The shortcoming that is difficult to overcome below yet this existing HVOF spray gun still exists: (1) is because this spray gun is with comburant oxygen, therefore the temperature of its combustion chamber and spraying flame stream is up to 3400K and can't regulate, so when using the lower dusty spray of fusing point, will make this powder become melting state at rifle mouth place, thereby be bonded at this place and cause deposition to stop up, cause the coating cost of manufacture to raise simultaneously; (2) spray material might be because of the overheated oxygenolysis that produces to a certain degree; (3) the water cooling meeting makes the energy utilization rate of spray gun lower etc., and these unfavorable factors have limited its application and development greatly.Reduce to 2400K though utilize air to replace oxygen to carry out temperature that combustion-supporting HVAF spray gun can make combustion chamber and spraying flame stream by the 3400K of HVOF spray gun, thereby can solve rifle mouth powder deposition blockage problem, but in large-scale commercial production, be difficult to reduce significantly the coating cost of manufacture, reason is that air-breathing can make the temperature of spraying flame stream low excessively, and the influence that is subjected to envrionment temperature is fluctuateed excessive up and down, finally causes the dusty spray deposition to descend.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of powder that can not occur to stop up rifle mouth problem, the powder deposition rate is higher, and can reduce the combustion-supporting hypersonic flame spraying rifle of the interior mixing of liquid fuel-oxygen-air cannon of coating cost of manufacture and raising coating quality.
In order to achieve the above object, mix combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen-air cannon that the utility model provides and comprise axial back seat, oil burner nozzle, burning maintainer, sparking plug, back water cooled housing, combustion chamber, rifle larynx, powder feeding section, gun barrel, back set collar, middle set collar, preceding set collar, preceding water cooled housing, right angle water thrust-augmenting nozzle and straight water thrust-augmenting nozzle; Wherein axially the centre of back seat is formed with an axial pass-through holes, the top of axial pass-through holes connects and is formed with the sparking plug pilot hole that an inside is equipped with sparking plug, the below of axial pass-through holes is formed with a combustion-supporting oxygen inlet, a combustion air inlet and an oil inlet successively, and the rear end of combustion-supporting oxygen inlet and oil inlet is connected with the middle part of axial pass-through holes, the middle part of combustion air inlet is connected with the middle part of axial pass-through holes, and its front port place then is equipped with the burning maintainer; Oil burner nozzle is installed in the rear portion of axial pass-through holes; The combustion chamber in a tubular form, its rear end links to each other with the front end of axial back seat; The back water cooled housing spacing of being separated by is enclosed within the outside of combustion chamber, and one side circumferential wall outside surface upper edge radially is formed with the cooling water outlet of an entrance of cooling water and and its intracavity inter-connection; The rifle larynx is the cone shape, and its rear end links to each other with the front end of combustion chamber; The powder feeding section has jacket structured, and its rear end links to each other with the front end of rifle larynx, and its front end then joins with the rear end of gun barrel, and connects on its circumferential wall and be formed with two radially powder-feeding mouths; Before the water cooled housing spacing of being separated by be enclosed within the outside of gun barrel; The front end one side circumferential wall outside of water cooled housing before right angle water thrust-augmenting nozzle radially is connected, and both inside is interconnected; Straight water thrust-augmenting nozzle is connected the rear end of right angle water thrust-augmenting nozzle and a side circumferential wall inside of back water cooled housing vertically, and its front port is connected with the inside of right angle water thrust-augmenting nozzle, thereafter port then with back water cooled housing on entrance of cooling water join; Back set collar, middle set collar and before set collar be respectively applied for axial back seat and back water cooled housing, back water cooled housing and powder feeding section and powder feeding section be tightly connected mutually with preceding water cooled housing and be in the same place.
Therefore described burning maintainer is positioned at the inside of combustion chamber, and it can keep certain temperature when trouble-free burning, even because water-cooled former thereby also can guarantee that burning carries out continuously and stably when making chamber temperature very low.
On the described powder feeding section two the radially powder-feeding mouth settings that are centrosymmetric.
Throat diameter is 10mm on the described rifle larynx, and throat's expansion diameter is 12mm.
Mixing combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen that the utility model provides-air cannon can utilize the method for any adjusting oxygen and air mixed ratio accurately to control flame stream temperature and combustion chamber pressure, thereby flame stream temperature can be regulated in the scope significantly of 2400K～3400K, therefore the lower powder of fusing point is under the semi-molten state sprays, stop up a difficult problem so can under the prerequisite of not sacrificing spray deposited rate, solve rifle mouth powder deposition, but also the low excessively problem of coating deposition can solve simple air-breathing the time, thereby can when improving coating quality, reduce the coating cost of manufacture.In addition, owing to be arranged on the burning maintainer of inside, combustion chamber is to be made by the slow material of heat radiation, therefore when trouble-free burning, particularly when mixed gas that uses low oxygen content or air-breathing, even because of water-cooled former thereby make the temperature of combustion chamber reduce very fast, it also can keep higher temperature, thereby can guarantee that flameholding carries out continuously, realizes that finally different materials sprays in optimum temperature range separately.In addition, this spray gun also the concrete structure advantages of simple, practical, be easy to advantage such as care and maintenance, therefore can be widely used in fields such as Aeronautics and Astronautics, metallurgy, electric power, petrochemical complex, automobile, boats and ships.
Description of drawings
Mix combustion-supporting hypersonic flame spraying rifle vertical structure sectional view in liquid fuel-oxygen that Fig. 1 provides for the utility model-air cannon.
Fig. 2 is Fig. 1 axis rear-facing seat rear end structure side view.
Fig. 3 be among Fig. 2 A-A to sectional view.
Fig. 4 be among Fig. 2 B-B to sectional view.
Fig. 5 is a powder feeding section vertical structure sectional view among Fig. 1.
Embodiment
Mixing combustion-supporting hypersonic flame spraying rifle in the liquid fuel-oxygen-air cannon that the utility model is provided below in conjunction with the drawings and specific embodiments is elaborated.
As Fig. 1～shown in Figure 5, mix combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen that the utility model provides-air cannon and comprise axial back seat 1, oil burner nozzle 2, burning maintainer 3, sparking plug, back water cooled housing 4, combustion chamber 5, rifle larynx 6, powder feeding section 7, gun barrel 8, back set collar 9, middle set collar 10, preceding set collar 11, preceding water cooled housing 18, right angle water thrust-augmenting nozzle 19 and straight water thrust-augmenting nozzle 20; Wherein axially the centre of back seat 1 is formed with an axial pass-through holes 12, the top of axial pass-through holes 12 connects and is formed with the sparking plug pilot hole 13 that an inside is equipped with not shown sparking plug, the below of axial pass-through holes 12 is formed with a combustion-supporting oxygen inlet 14, a combustion air inlet 15 and an oil inlet 16 successively, and the rear end of combustion-supporting oxygen inlet 14 and oil inlet 16 is connected with the middle part of axial pass-through holes 12, the middle part of combustion air inlet 15 is connected with the middle part of axial pass-through holes 12, and its front port place then is equipped with burning maintainer 3; Oil burner nozzle 2 is installed in the rear portion of axial pass-through holes 12; Combustion chamber 5 in a tubular form, its rear end links to each other with the front end of axial back seat 1; Back water cooled housing 4 spacing of being separated by is enclosed within the outside of combustion chamber 5, and one side circumferential wall outside surface upper edge radially is formed with the cooling water outlet 22 of an entrance of cooling water 21 and and its intracavity inter-connection; Rifle larynx 6 is the cone shape, and its rear end links to each other with the front end of combustion chamber 5; Powder feeding section 7 has jacket structured, and its rear end links to each other with the front end of rifle larynx 6, and its front end then joins with the rear end of gun barrel 8, and connects on its circumferential wall and be formed with two radially powder-feeding mouths 17; Before water cooled housing 18 spacing of being separated by be enclosed within the outside of gun barrel 8; The front end one side circumferential wall outside of water cooled housing 18 before right angle water thrust-augmenting nozzle 19 radially is connected, and both inside is interconnected; Straight water thrust-augmenting nozzle 20 is connected the rear end of right angle water thrust-augmenting nozzle 19 and a side circumferential wall inside of back water cooled housing 4 vertically, and its front port is connected with the inside of right angle water thrust-augmenting nozzle 19, thereafter port then with back water cooled housing 4 on entrance of cooling water 21 join; Back set collar 9, middle set collar 10 and before set collar 11 be respectively applied for axial back seat 1 and back water cooled housing 4, back water cooled housing 4 and powder feeding section 7 and powder feeding section 7 be tightly connected mutually with preceding water cooled housing 18 and be in the same place.Therefore described burning maintainer 3 is positioned at the inside of combustion chamber 5, and it can keep certain temperature when trouble-free burning, even because water-cooled former thereby also can guarantee that burning carries out continuously and stably when making combustion chamber 5 temperature very low.On the described powder feeding section 7 two radially powder-feeding mouth 17 settings that are centrosymmetric.Throat diameter is 10mm on the described rifle larynx 6, and throat's expansion diameter is 12mm.
When the combustion-supporting hypersonic flame spraying rifle of mixing sprays in the liquid fuel-oxygen that utilizes the utility model to provide-air cannon, at first with the aviation kerosene that acts as a fuel and as the oxygen (air or oxygen and Air mixing gas) of ignition dope respectively oil inlet 16 and the combustion-supporting oxygen inlet 14 from the axial back seat 1 send into the oil burner nozzle 2 that is arranged in the axial pass-through holes 12, behind this nozzle mixed aerosol, spray into combustion chamber 5, simultaneously by stable burning the after the spark ignitor; Simultaneously, by spraying state working parameter from the axial back seat 1 combustion air inlet 15 and burning maintainer 3 with the air admission combustion chamber 5 of proper ratio, combustion chamber 5 in, form the High Temperature High Pressure combustion thus and flow, this combustion rifle larynx 6 of flowing through accelerates to supersonic speed then.Meanwhile, with dusty spray on powder feeding section 7 two radially powder-feeding mouth 17 send into from the High Temperature High Pressure combustion stream of rifle larynx 6 front ends ejection, make this powder quicken the back and sentence ultrasonic speed from the front end mouth of pipe of gun barrel 8 and spray and be deposited on the surface of workpiece and form coating through the heating of combustion stream.In above-mentioned spraying process, water coolant is injected from the entrance of cooling water 21 on the water cooled housing 4 of back, the water cooling passageway that this water coolant will be successively constitutes by chuck and back water cooled housing 4 by straight water thrust-augmenting nozzle 20, right angle water thrust-augmenting nozzle 19, preceding water cooled housing 18, powder feeding section 7 and from the water cooled housing 4 of back cooling water outlet 22 flow out, thereby the temperature that guarantees rifle body in the spraying process is lower than 50 ℃.
Claims (4)
1. mix combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen-air cannon, it is characterized in that: mix combustion-supporting hypersonic flame spraying rifle in described liquid fuel-oxygen-air cannon and comprise axial back seat (1), oil burner nozzle (2), burning maintainer (3), sparking plug, back water cooled housing (4), combustion chamber (5), rifle larynx (6), powder feeding section (7), gun barrel (8), back set collar (9), middle set collar (10), preceding set collar (11), preceding water cooled housing (18), right angle water thrust-augmenting nozzle (19) and straight water thrust-augmenting nozzle (20); Wherein axially the centre of back seat (1) is formed with an axial pass-through holes (12), the top of axial pass-through holes (12) connects and is formed with the sparking plug pilot hole (13) that an inside is equipped with sparking plug, the below of axial pass-through holes (12) is formed with a combustion-supporting oxygen inlet (14) successively, a combustion air inlet (15) and an oil inlet (16), and the rear end of combustion-supporting oxygen inlet (14) and oil inlet (16) is connected with the middle part of axial pass-through holes (12), the middle part of combustion air inlet (15) is connected with the middle part of axial pass-through holes (12), and its front port place then is equipped with burning maintainer (3); Oil burner nozzle (2) is installed in the rear portion of axial pass-through holes (12); Combustion chamber (5) in a tubular form, its rear end links to each other with the axial front end of back seat (1); Back water cooled housing (4) spacing of being separated by is enclosed within the outside of combustion chamber (5), and one side circumferential wall outside surface upper edge radially is formed with the cooling water outlet (22) of an entrance of cooling water (21) and and its intracavity inter-connection; Rifle larynx (6) is the cone shape, and its rear end links to each other with the front end of combustion chamber (5); Powder feeding section (7) has jacket structured, and its rear end links to each other with the front end of rifle larynx (6), and its front end then joins with the rear end of gun barrel (8), and connects on its circumferential wall and be formed with two radially powder-feeding mouths (17); Before water cooled housing (18) spacing of being separated by be enclosed within the outside of gun barrel (8); Right angle water thrust-augmenting nozzle (19) radially is connected the front end one side circumferential wall outside of preceding water cooled housing (18), and both inside is interconnected; Straight water thrust-augmenting nozzle (20) is connected the rear end of right angle water thrust-augmenting nozzle (19) and a side circumferential wall inside of back water cooled housing (4) vertically, its front port is connected with the inside of right angle water thrust-augmenting nozzle (19), thereafter port then with back water cooled housing (4) on entrance of cooling water (21) join; Back set collar (9), middle set collar (10) and before set collar (11) be respectively applied for axial back seat (1) and back water cooled housing (4), afterwards water cooled housing (4) and powder feeding section (7) and powder feeding section (7) and preceding water cooled housing (18) are tightly connected together mutually.
2. mix combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen according to claim 1-air cannon, it is characterized in that: described burning maintainer (3) is positioned at the inside of combustion chamber (5), therefore it can keep certain temperature when trouble-free burning, even because water-cooled former thereby also can guarantee that burning carries out continuously and stably when making combustion chamber (5) temperature very low.
3. mix combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen according to claim 1-air cannon, it is characterized in that: on the described powder feeding section (7) two radially powder-feeding mouth (17) settings that are centrosymmetric.
4. mix combustion-supporting hypersonic flame spraying rifle in liquid fuel-oxygen according to claim 1-air cannon, it is characterized in that: it is 10mm that described rifle larynx (6) is gone up throat diameter, and throat's expansion diameter is 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200963902U CN201043190Y (en) | 2007-06-14 | 2007-06-14 | Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200963902U CN201043190Y (en) | 2007-06-14 | 2007-06-14 | Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun |
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| Publication Number | Publication Date |
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| CN201043190Y true CN201043190Y (en) | 2008-04-02 |
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| CNU2007200963902U Expired - Fee Related CN201043190Y (en) | 2007-06-14 | 2007-06-14 | Mixed combustion-supporting superspeed flame spraying gun in liquid fuel-oxygen-air gun |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148210A (en) * | 2013-05-20 | 2014-11-19 | 金属设备有限公司 | High velocity oxy-liquid flame spray gun and process for coating thereof |
| CN105714172A (en) * | 2016-04-14 | 2016-06-29 | 国家电网公司 | Corrosion-resistant grounding grid metal ceramic coating material and preparation device and method thereof |
| 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 |
| 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 |
-
2007
- 2007-06-14 CN CNU2007200963902U patent/CN201043190Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148210A (en) * | 2013-05-20 | 2014-11-19 | 金属设备有限公司 | High velocity oxy-liquid flame spray gun and process for coating thereof |
| CN104148210B (en) * | 2013-05-20 | 2017-01-11 | 金属设备有限公司 | High velocity oxy-liquid flame spray gun and process for coating thereof |
| CN105714172A (en) * | 2016-04-14 | 2016-06-29 | 国家电网公司 | Corrosion-resistant grounding grid metal ceramic coating material and preparation device and method thereof |
| CN105714172B (en) * | 2016-04-14 | 2017-08-01 | 国家电网公司 | A kind of corrosion resistant grounded screen metal ceramic coating material and its preparation facilities and method |
| 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 |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20110614 |