CN104209644B - Modified secondary compression type plasma gun - Google Patents
Modified secondary compression type plasma gun Download PDFInfo
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- CN104209644B CN104209644B CN201410401520.3A CN201410401520A CN104209644B CN 104209644 B CN104209644 B CN 104209644B CN 201410401520 A CN201410401520 A CN 201410401520A CN 104209644 B CN104209644 B CN 104209644B
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- nozzle
- compression
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- assembly cavity
- pore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
Abstract
A kind of modified secondary compression type plasma gun, comprise a tungsten electrode, the discharge end of tungsten electrode is provided with nozzle and sheath, there is in nozzle an assembly cavity, an annular space is offered along nozzle circumference in the perisporium of nozzle, this annular space is as water-cooled space, and this water-cooled space has cooling water inlet and coolant outlet; The arrival end of described nozzle assembly cavity is provided with one stage of compression gas circuit, and the perisporium of described nozzle offers two-stage compression pore between arrival end and the port of export, and this two-stage compression pore is connected with the outlet side of two-stage compression gas circuit; Protection gas passage is provided with between nozzle and sheath.In the present invention, two second compression of electric arc plasma (orifice) gas in one stage of compression gas circuit and two-stage compression gas circuit that tungsten electrode discharge end is released, make electric arc concentration degree higher, and deflection is stronger, and energy utilization rate is high, substantially increases the throat thickness of plasma weldering; In the present invention, a road cooling water achieves the cooling of first compression and second-compressed in nozzle, and structure is simple.
Description
Technical field
The present invention relates to plasma gun, particularly relate to a kind of modified secondary compression type plasma gun.
Background technology
Plasma Welding utilizes plasma arc as the welding method of thermal source.Gas produces dissociation by electric arc heated, is compressed, energization density and the degree of dissociation in high speed by during water-cooled nozzle, forms plasma arc.Its stability, caloric value and temperature, all higher than general electric arc, thus have larger penetration power and speed of welding.The formation gas of plasma arc and the protective gas around it generally use argon gas.According to the material character of various workpiece, also have and to use helium or the mist such as argon helium, argon hydrogen.
The rifle head of existing plasma gun only has a water-cooled nozzle, and can only carry out first compression by article on plasma arc, electric arc concentration degree is not high, and deflection is more weak, and energy utilization rate is low, and economic benefit is not high, thus limits the throat thickness of plasma weldering.Authorization Notice No. is the plasma gun that the Chinese invention patent " secondary compression type plasma gun " of CN203418220U discloses that a kind of energy article on plasma arc carries out second-compressed, although this plasma gun can carry out second-compressed by article on plasma arc, but its complex structure, part is many, processing cost is high, assembles loaded down with trivial details; Further, the first compression nozzle of this plasma gun and the cooling of second-compressed nozzle divide two-way, complex structure.
So, how to provide a kind of structure simple secondary compression type plasma gun just to become research topic of the present invention.
Summary of the invention
The object of the present invention is to provide the simple secondary compression type plasma gun of a kind of structure.
For achieving the above object, the technical solution used in the present invention is: a kind of modified secondary compression type plasma gun, comprises pikestaff, axially a tungsten electrode is equipped with along it in pikestaff, one end of tungsten electrode is as discharge end, and its innovation is: described discharge end is provided with nozzle and sheath, wherein:
The main body of described nozzle is the cylinder of a hollow structure, and the cavity of described hollow structure is as assembly cavity, and assembly cavity is arranged along the axis of cylinder, and the both ends open of assembly cavity is in two end faces of cylinder, and the perisporium of described nozzle has certain thickness;
The two ends of described assembly cavity are divided into arrival end and the port of export along its axial area, and the discharge end of described tungsten electrode stretches into assembly cavity from arrival end;
An annular space is offered along nozzle circumference in the perisporium of described nozzle, this annular space is as water-cooled space, this water-cooled space has cooling water inlet and coolant outlet, described cooling water inlet with enter aquaporin and be connected, described coolant outlet is connected with exhalant canal;
The arrival end of described nozzle assembly cavity is provided with one stage of compression gas circuit, and the outlet side of one stage of compression gas circuit is communicated with the arrival end of described assembly cavity;
The perisporium of described nozzle offers two-stage compression pore between arrival end and the port of export, two-stage compression pore is relative to the oblique layout of the axis of nozzle, axially tilting to the port of export of assembly cavity of two-stage compression pore, the outlet side of two-stage compression pore is compared to the axle of inlet end closer to assembly cavity, and two-stage compression pore is connected with the outlet side of two-stage compression gas circuit;
Described nozzle is located in sheath, and be provided with protection gas passage between nozzle and sheath, this protection gas passage is connected with the outlet side of protection gas gas circuit.
Related content in technique scheme is explained as follows:
1, in such scheme, described nozzle comprises nozzle core and nozzle cage, and described assembly cavity is opened in nozzle core, and nozzle core is located in nozzle cage;
The outer peripheral face of described nozzle core offers two ring annular grooves along its circumference, two ring annular grooves are arranged at the axially interval of nozzle core, two annular grooves coordinate formation two airtight annular space with the inwall of nozzle cage, respectively as water-cooled space and two-stage compression air chamber, two-stage compression air chamber is communicated with described assembly cavity by described two-stage compression pore, and the outlet side of two-stage compression gas circuit is communicated with two-stage compression air chamber;
Two-stage compression gas enters in assembly cavity via two-stage compression pore after entering two-stage compression air chamber again and compresses electric arc, and its air-flow is more even.
2, in such scheme, between described nozzle core and the inwall of nozzle cage, sealing ring is provided with, for sealing and separating water-cooled space and two-stage compression air chamber.
3, in such scheme; the periphery wall of described nozzle is convexly equipped with a ring annular groove along its circumference; the annular space that this annular groove coordinates formation one airtight with the inwall of sheath; as protection gas air chamber; by protecting gas pore to be communicated with between this protection gas air chamber with protection gas passage, protection gas pore is uniformly distributed in the circumference of nozzle.
4, in such scheme, described sheath is provided with sealing ring away between one end of the assembly cavity port of export and nozzle.
5, in such scheme, a circle annular space is offered along its circumference in the perisporium of the described upstream side of the injector, this annular space is as one stage of compression air chamber, and this one stage of compression air chamber is connected with the outlet side of one stage of compression gas circuit, and one stage of compression air chamber is communicated with described assembly cavity by one stage of compression pore.
6, in such scheme, in described assembly cavity by arrival end to two-stage compression pore outlet side between one section be defined as one stage of compression section, two-stage compression section is defined as by the port of export to a section of the port of export of nozzle core of two-stage compression pore, the end of one stage of compression section is tapered configuration, and the end of two-stage compression section is also tapered configuration.
7, in such scheme, the cooling water inlet in described water-cooled space and coolant outlet with nozzle axially for reference symmetry is arranged.
8, in such scheme, logical plasma (orifice) gas in described one stage of compression gas circuit and two-stage compression gas circuit, for compressing the electric arc that tungsten electrode discharge end is released, logical argon gas in described protection gas passage, for by electric arc and air insulated.
9, in such scheme, one stage of compression pore and two-stage compression pore are all uniformly distributed in the circumference of nozzle.
Operation principle of the present invention and advantage: the plasma (orifice) gas of electric arc first in one stage of compression gas circuit that in the present invention, tungsten electrode discharge end is released carries out first compression to it, then the plasma (orifice) gas again in two-stage compression gas circuit carries out second-compressed to it, by two second compression, make electric arc concentration degree higher, deflection is stronger, energy utilization rate is high, substantially increases the throat thickness of plasma weldering; Cooling water in the present invention enters behind water-cooled space through cooling water inlet and is flowed out by coolant outlet, and only arrange a road cooling water and cool nozzle, namely a road cooling water achieves the cooling of first compression and second-compressed in nozzle, and structure is simple.
Accompanying drawing explanation
Accompanying drawing 1 is the sectional perspective exploded view of the embodiment of the present invention;
Accompanying drawing 2 is embodiment of the present invention sectional view one;
Accompanying drawing 3 is the partial enlarged drawing of accompanying drawing 2;
Accompanying drawing 4 is embodiment of the present invention sectional view two;
Accompanying drawing 5 is the partial enlarged drawing of accompanying drawing 4;
Accompanying drawing 6 is embodiment of the present invention sectional view three;
Accompanying drawing 7 is the partial enlarged drawing of accompanying drawing 6.
In above accompanying drawing: 1, tungsten electrode; 2, sheath; 3, nozzle core; 4, nozzle cage; 5, water-cooled space; 6, one stage of compression gas circuit; 7, two-stage compression pore; 8, two-stage compression air chamber; 9, gas passage is protected; 10, gas gas circuit is protected; 11, assembly cavity; 12, two-stage compression gas circuit; 13, aquaporin is entered; 14, exhalant canal; 15, gas air chamber is protected; 16, gas pore is protected; 17, one stage of compression pore.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment: a kind of modified secondary compression type plasma gun
Shown in accompanying drawing 1 ~ accompanying drawing 7, comprise pikestaff, be axially equipped with a tungsten electrode 1 along it in pikestaff, one end of tungsten electrode 1, as discharge end, is provided with nozzle and sheath 2 at described discharge end, wherein:
The main body of described nozzle is the cylinder of a hollow structure, and the cavity of described hollow structure is as assembly cavity 11, and assembly cavity 11 is arranged along the axis of cylinder, and the both ends open of assembly cavity 11 is in two end faces of cylinder, and the perisporium of described nozzle has certain thickness.
The two ends of described assembly cavity 11 are divided into arrival end and the port of export along its axial area, and the discharge end of described tungsten electrode 1 stretches into assembly cavity 11 from arrival end.
An annular space is offered along nozzle circumference in the perisporium of described nozzle, this annular space is as water-cooled space 5, this water-cooled space 5 has cooling water inlet and coolant outlet, described cooling water inlet with enter aquaporin 13 and be connected, described coolant outlet is connected with exhalant canal 14.
The arrival end of described nozzle assembly cavity 11 is provided with one stage of compression gas circuit 6, and the outlet side of one stage of compression gas circuit 6 is communicated with the arrival end of described assembly cavity 11.
The perisporium of described nozzle offers two-stage compression pore 7 between arrival end and the port of export, two-stage compression pore 7 is relative to the oblique layout of the axis of nozzle, axially tilting to the port of export of assembly cavity 11 of two-stage compression pore 7, the outlet side of two-stage compression pore 7 is compared to the axle of inlet end closer to assembly cavity 11, and two-stage compression pore 7 is connected with the outlet side of two-stage compression gas circuit 12.
Described nozzle is located in sheath 2, is provided with and protects gas passage 9 between nozzle and sheath 2, and this protection gas passage 9 is connected with the outlet side of protection gas gas circuit 10.
Described nozzle comprises nozzle core 3 and nozzle cage 4, and described assembly cavity 11 is opened in nozzle core 3, and nozzle core 3 is located in nozzle cage 4.
The outer peripheral face of described nozzle core 3 offers two ring annular grooves along its circumference, two ring annular grooves are arranged at the axially interval of nozzle core 3, two annular grooves coordinate formation two airtight annular space with the inwall of nozzle cage 4, respectively as water-cooled space 5 and two-stage compression air chamber 8, two-stage compression air chamber 8 is communicated with described assembly cavity 11 by described two-stage compression pore 7, and the outlet side of two-stage compression gas circuit 12 is communicated with two-stage compression air chamber 8.
Sealing ring is provided with, for sealing and separating water-cooled space 5 and two-stage compression air chamber 8 between described nozzle core 3 and the inwall of nozzle cage 4.
The periphery wall of described nozzle is convexly equipped with a ring annular groove along its circumference; the annular space that this annular groove coordinates formation one airtight with the inwall of sheath 2; as protection gas air chamber 15; by protecting gas pore 16 to be communicated with between this protection gas air chamber 15 with protection gas passage 9, protection gas pore 16 is uniformly distributed in the circumference of nozzle.
Described sheath 2 is provided with sealing ring away between one end of assembly cavity 11 port of export and nozzle.
A circle annular space is offered along its circumference in the perisporium of the described upstream side of the injector, this annular space is as one stage of compression air chamber, this one stage of compression air chamber is connected with the outlet side of one stage of compression gas circuit 6, and one stage of compression air chamber is communicated with described assembly cavity 11 by one stage of compression pore 17.
In described assembly cavity 11 by arrival end to two-stage compression pore 7 outlet side between one section be defined as one stage of compression section, two-stage compression section is defined as by the port of export to a section of the port of export of nozzle core 3 of two-stage compression pore 7, the end of one stage of compression section is tapered configuration, and the end of two-stage compression section is also tapered configuration.
The cooling water inlet in described water-cooled space 5 and coolant outlet with nozzle axially for reference symmetry is arranged.
In above-described embodiment, the annular groove forming described two-stage compression air chamber 8 and water-cooled space 5 is opened on nozzle core 3, and in actual applications, if be opened in by annular groove on the inwall of nozzle cage 4, also can reach same effect.
The plasma (orifice) gas of electric arc first in one stage of compression gas circuit 6 that in the present invention, tungsten electrode 1 discharge end is released carries out first compression to it, then the plasma (orifice) gas again in two-stage compression gas circuit 12 carries out second-compressed to it, by two second compression, make electric arc concentration degree higher, deflection is stronger, energy utilization rate is high, substantially increases the throat thickness of plasma weldering; Cooling water in the present invention enters behind water-cooled space 5 through cooling water inlet and is flowed out by coolant outlet, only arrange a road cooling water to cool nozzle, namely a road cooling water achieves the cooling of first compression and second-compressed in nozzle, structure is simple, number of components is few, processing cost is low, and efficiency of assembling is high.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. a modified secondary compression type plasma gun, comprises pikestaff, and be axially equipped with a tungsten electrode (1) along it in pikestaff, one end of tungsten electrode (1), as discharge end, is characterized in that: described discharge end is provided with nozzle and sheath (2), wherein:
The main body of described nozzle is the cylinder of a hollow structure, the cavity of described hollow structure is as assembly cavity (11), assembly cavity (11) is arranged along the axis of cylinder, and the both ends open of assembly cavity (11) is in two end faces of cylinder, and the perisporium of described nozzle has certain thickness;
The two ends of described assembly cavity (11) are divided into arrival end and the port of export along its axial area, and the discharge end of described tungsten electrode (1) stretches into assembly cavity (11) from arrival end;
An annular space is offered along nozzle circumference in the perisporium of described nozzle, this annular space is as water-cooled space (5), this water-cooled space (5) has cooling water inlet and coolant outlet, described cooling water inlet with enter aquaporin (13) and be connected, described coolant outlet is connected with exhalant canal (14);
The arrival end of described nozzle assembly cavity (11) is provided with one stage of compression gas circuit (6), and the outlet side of one stage of compression gas circuit (6) is communicated with the arrival end of described assembly cavity (11);
The perisporium of described nozzle offers between arrival end and the port of export two-stage compression pore (7), two-stage compression pore (7) is relative to the oblique layout of the axis of nozzle, axially tilting to the port of export of assembly cavity (11) of two-stage compression pore (7), the outlet side of two-stage compression pore (7) is compared to the axle of inlet end closer to assembly cavity (11), and two-stage compression pore (7) is connected with the outlet side of two-stage compression gas circuit (12);
Described nozzle is located in sheath (2), is provided with and protects gas passage (9) between nozzle and sheath (2), and this protection gas passage (9) is connected with the outlet side of protection gas gas circuit (10).
2. modified secondary compression type plasma gun according to claim 1, it is characterized in that: described nozzle comprises nozzle core (3) and nozzle cage (4), described assembly cavity (11) is opened in nozzle core (3), and nozzle core (3) is located in nozzle cage (4);
The outer peripheral face of described nozzle core (3) offers two ring annular grooves along its circumference, two ring annular grooves are arranged at the axially interval of nozzle core (3), the annular space that two annular grooves coordinate formation two airtight with the inwall of nozzle cage (4), respectively as water-cooled space (5) and two-stage compression air chamber (8), two-stage compression air chamber (8) is communicated with described assembly cavity (11) by described two-stage compression pore (7), and the outlet side of two-stage compression gas circuit (12) is communicated with two-stage compression air chamber (8).
3. modified secondary compression type plasma gun according to claim 2, it is characterized in that: between the inwall of described nozzle core (3) and nozzle cage (4), be provided with sealing ring, for sealing and separating water-cooled space (5) and two-stage compression air chamber (8).
4. modified secondary compression type plasma gun according to claim 1; it is characterized in that: the periphery wall of described nozzle is convexly equipped with a ring annular groove along its circumference; the annular space that this annular groove coordinates formation one airtight with the inwall of sheath (2); as protection gas air chamber (15); by protecting gas pore (16) to be communicated with between this protection gas air chamber (15) with protection gas passage (9), protection gas pore (16) is uniformly distributed in the circumference of nozzle.
5. modified secondary compression type plasma gun according to claim 4, is characterized in that: described sheath (2) is provided with sealing ring away between one end of assembly cavity (11) port of export and nozzle.
6. modified secondary compression type plasma gun according to claim 1, it is characterized in that: in the perisporium of the described upstream side of the injector, offer a circle annular space along its circumference, this annular space is as one stage of compression air chamber, this one stage of compression air chamber is connected with the outlet side of one stage of compression gas circuit (6), and one stage of compression air chamber is communicated with described assembly cavity (11) by one stage of compression pore (17).
7. modified secondary compression type plasma gun according to claim 1, it is characterized in that: in described assembly cavity (11) by arrival end to two-stage compression pore (7) outlet side between one section be defined as one stage of compression section, two-stage compression section is defined as by the port of export to a section of the port of export of nozzle core (3) of two-stage compression pore (7), the end of one stage of compression section is tapered configuration, and the end of two-stage compression section is also tapered configuration.
8. modified secondary compression type plasma gun according to claim 1, is characterized in that: the cooling water inlet of described water-cooled space (5) and coolant outlet with nozzle axially for reference symmetry is arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410401520.3A CN104209644B (en) | 2014-08-14 | 2014-08-14 | Modified secondary compression type plasma gun |
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| CN201410401520.3A CN104209644B (en) | 2014-08-14 | 2014-08-14 | Modified secondary compression type plasma gun |
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| CN104209644A CN104209644A (en) | 2014-12-17 |
| CN104209644B true CN104209644B (en) | 2016-04-27 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378520B (en) * | 2016-09-20 | 2019-03-22 | 天津大学 | A kind of high current tungsten electrode argon arc welding gun of cooling cathode |
| CN107363425B (en) * | 2017-08-22 | 2019-07-19 | 天津大学 | A kind of free arc plasma arc welding system of compound compression- |
| CN108581155A (en) * | 2018-05-11 | 2018-09-28 | 江苏大学 | A kind of air-flow recompressing plasma arc welding procedure |
| CN108772619A (en) * | 2018-05-11 | 2018-11-09 | 江苏大学 | A kind of air-flow recompressing plasma arc welding gun |
| CN108901115B (en) * | 2018-09-19 | 2019-06-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of plasma generator |
| CN110732762A (en) * | 2019-09-12 | 2020-01-31 | 江苏大学 | metal powder recompression plasma arc welding process |
| CN115156673A (en) * | 2022-05-10 | 2022-10-11 | 刘力铭 | Induction type thermal plasma welding torch |
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| GB1444880A (en) * | 1974-03-27 | 1976-08-04 | Philips Electronic Associated | Arc welding method and apparatus |
| US4866240A (en) * | 1988-09-08 | 1989-09-12 | Stoody Deloro Stellite, Inc. | Nozzle for plasma torch and method for introducing powder into the plasma plume of a plasma torch |
| CN101084701A (en) * | 2004-11-16 | 2007-12-05 | 人工发热机有限公司 | Plasma arc torch having an electrode with internal passages |
| CN203418220U (en) * | 2013-07-15 | 2014-02-05 | 昆山华焊科技有限公司 | Secondary compression type plasma welding gun |
| CN204075482U (en) * | 2014-08-14 | 2015-01-07 | 昆山华焊科技有限公司 | Modified secondary compression type plasma gun |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9079265B2 (en) * | 2008-08-22 | 2015-07-14 | Kjellberg Finsterwalde Plasma Und Maschinen Gmbh | Interconnection arrangement for a plasma torch wearing part and part holder |
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2014
- 2014-08-14 CN CN201410401520.3A patent/CN104209644B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1444880A (en) * | 1974-03-27 | 1976-08-04 | Philips Electronic Associated | Arc welding method and apparatus |
| US4866240A (en) * | 1988-09-08 | 1989-09-12 | Stoody Deloro Stellite, Inc. | Nozzle for plasma torch and method for introducing powder into the plasma plume of a plasma torch |
| CN101084701A (en) * | 2004-11-16 | 2007-12-05 | 人工发热机有限公司 | Plasma arc torch having an electrode with internal passages |
| CN203418220U (en) * | 2013-07-15 | 2014-02-05 | 昆山华焊科技有限公司 | Secondary compression type plasma welding gun |
| CN204075482U (en) * | 2014-08-14 | 2015-01-07 | 昆山华焊科技有限公司 | Modified secondary compression type plasma gun |
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Effective date of registration: 20180629 Address after: 215125 Building 5, 88 Tang Zhuang Road, Suzhou Industrial Park, Suzhou, Jiangsu. Patentee after: Huahan Sci-Tech Co., Ltd., Suzhou Industrial Park Address before: 215000 No. 77 Branch Road, Park Avenue, Zhouzhuang Town, Kunshan, Suzhou, Jiangsu Patentee before: Kunshan A-Hand Technology Co.,Ltd. |
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