CN104596723A - Production method of diffuser used in aerodynamic experiments - Google Patents
Production method of diffuser used in aerodynamic experiments Download PDFInfo
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- CN104596723A CN104596723A CN201510044240.6A CN201510044240A CN104596723A CN 104596723 A CN104596723 A CN 104596723A CN 201510044240 A CN201510044240 A CN 201510044240A CN 104596723 A CN104596723 A CN 104596723A
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Abstract
The invention discloses a production method of a diffuser used in aerodynamic experiments and belongs to the technical field of design and production of high temperature and hypersonic velocity aerodynamic experiment equipment. The production method can effectively improve product quality and has fast assembly speed. The production method includes: processing flange parts with inner cylinder positioning steps and outer cylinder positioning steps on flange blanks, drilling positioning holes in outer cylinder blanks, making inner cylinder parts and outer cylinder parts through rolling, and assembling the inner cylinder parts and the outer cylinder parts on the basis of the inner cylinder positioning steps and the outer cylinder positioning steps. In addition, the thickness of cavities between the inner cylinder parts and the outer cylinder parts is controlled through a positioning short pipe so the purposes of improving product quality and assembling speed can be achieved.
Description
Technical field
The present invention relates to a kind of manufacture method, especially relate to a kind of manufacture method of aerodynamic experiment diffuser, belong to high temperature, hypersonic free air facility design and manufacturing technology field.
Background technology
Diffusion step-down section carries out an indispensable special device in high temperature, hypersonic aerodynamic experiment complete equipment, after it is positioned at test section, mainly carries out the effect of spreading step-down and reduction of speed to the high pressure after test, high velocity air.Its structure is double-layered pressure-bearing structure, and interlayer cavity is the passage of recirculated cooling water, and object is to take away the heat transmitted from inner housing, ensures the temperature rise of inner housing within the specific limits, thus ensures the work that diffuser can be safe and reliable.Its shell body mainly bears the interior pressure of interlayer chilled water, its inner housing bears the external pressure of interlayer inner cooling water before opening vacuum valve, open the external pressure meeting increasing suddenly that vacuum valve consequence is subject to, high pressure, high speed and hot test air-flow can through out-of-date inner housing change into bear interior pressure from bearing external pressure suddenly, and bear high temperature gas flow effect.Therefore, the working condition of diffuser inner housing is very complicated.China in recent years industry achieves remarkable achievement in fields such as Aero-Space, these achievement obtain be unable to do without carry out high temperature, hypersonic aerodynamic experiment, therefore, the manufacture engineering method of the diffusion step-down section of researching high-temperature, hypersonic aerodynamic experiment is significant.
Existing whole diffusion step-down section and diffuser are formed by Flange joint by multistage straight barrel and two pieces conic tube, and each joint cylindrical shell is made up of the flange at inside and outside two-layer housing and two ends.There is between inside and outside housing the cavity that about 5mm is thick, shell body is dispersed with water inlet pipe and water outlet pipe.Cylinder shell body is the Q235 carbon steel material that 10mm is thick, and inner casing and flange are 304 stainless steel materials, and inner housing thickness is 8mm.Owing to being provided with the thick cavity of 5mm between inside and outside housing, thus cause assembling speed very slow, simultaneously when the shell blank manufacturing quality of single-piece is poor, the cavity of described thickness often cannot ensure.And be destroyed because of distortion to ensure that each section of described cylindrical shell there will not be in high pressure, high speed and hot test process; in prior art usually also can on urceolus skin interval be drilled with some plug welding holes, by described plug welding hole by aggregates for inside and outside housing plug welding.Equally, due to the existence of the thick cavity of about 5mm, each plug welding hole by interior carry out plug welding outward time inner housing can be caused to be out of shape, the plug welding surface on shell body is extremely irregular, and presentation quality cannot ensure.
Summary of the invention
Technical matters to be solved by this invention is: providing a kind of can have the manufacture method handing over the aerodynamic experiment diffuser fast with assembling speed that improve the quality of products.
For solving the problems of the technologies described above adopted technical scheme be: a kind of manufacture method of aerodynamic experiment diffuser, comprises the following steps,
A, to get the raw materials ready and part makes, first according to each detail drawing of described diffuser respectively blanking prepare flange blank, inner barrel blank, outer cylinder body blank and spacer ferrule, and on described outer cylinder body blank chamfering bit pilot hole; Then flange blank is processed into the flange part with inner barrel positioning step and outer cylinder body positioning step stand-by, inner barrel blank and outer cylinder body blank is rolled into inner barrel part respectively and outer cylinder body part is stand-by,
B, parts make, with the inner barrel positioning step on described flange part with outer cylinder body positioning step for described inner barrel part becomes two ends all to include the diffuser element of described flange part with outer cylinder body Assembly of the parts by benchmark, and spot welding is firm; And then by the pilot hole described in the insertion of described spacer ferrule, and the respective wall millet cake of the front end of described spacer ferrule and described inner barrel part is welded solid, by firm for the madial wall spot welding of the rear end of described spacer ferrule and described pilot hole, make diffuser element blank; Finally connect the order of weldering by described diffuser element blank welding diffuser element by first pilot hole welding rear flange,
C, the hydraulic testing, first carry out the hydraulic testing to the diffuser element that step b makes by 1.25 times of designing requirement pressure, carry out again after qualified rust cleaning polishing anticorrosion after treat always,
D, general assembly, finally by the diffuser that the diffuser element that step c obtains has been assembled into, complete once the making work of described aerodynamic experiment diffuser.
The invention has the beneficial effects as follows: owing to being provided with inner barrel positioning step and outer cylinder body positioning step on described flange part, the thickness requirement of inner barrel when so both ensure that assembling and about 5 ㎜ between outer cylinder body, simultaneously, owing to having described inner barrel positioning step and outer cylinder body positioning step, effectively can also improve assembling speed and effective correct inside and outside cylindrical shell in coiling process, occur more qualitative defects.And in described plug welding hole, first insert described spacer ferrule, and then described inner barrel is connected as a whole with outer cylinder body by described spacer ferrule, namely first one end of the insertion pilot hole of described spacer ferrule and inner barrel are welded, again the pilot hole on the other end of spacer ferrule and described shell body is welded, like this, not only can effectively overcome in welding process, the intensity defect that inside and outside cylindrical shell produces because of distortion and open defect, reach the object of effectively improving the quality of products, but also effectively can improve speed of welding.
Further, when the flange part described in processing, on the axial madial wall of described flange part and in radial sidewalls, process the bevel for welding for welding inner barrel and outer cylinder body simultaneously.
Further, in step b, when the diffuser element described in making, simultaneously at two ends welding equipment water inlet pipe and the rising pipe of described diffuser element, described water inlet pipe and the erection welding again after Flange joint weldering and pilot hole have been welded of described rising pipe.
Further, in step b, when described spacer ferrule is welded with described inner barrel part and pilot hole, the inside of described spacer ferrule is filled up to by built-up welding simultaneously and flushes with the lateral wall of outer cylinder body part.
Be further, when making outer cylinder body part, adopt the board making of at least thick 4 ㎜s larger than design thickness, and after described diffuser element welding equipment, after the hydraulic testing is qualified, remove the high and/or overlap of the weldering of protruding when spacer ferrule is inner described in built-up welding by turning.
Further, in step a, when inner barrel blank and outer cylinder body blank are prepared in blanking, first adopt computer setting-out typesetting, then adopt based automatic flame cutting device oxygen-acetylene cutting.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram of inside and outside cylindrical shell and the flange part that the present invention relates to;
Fig. 2 is the syndeton schematic diagram of inside and outside cylindrical shell and the spacer ferrule that the present invention relates to.
Be labeled as in figure: spacer ferrule 1, pilot hole 2, inner barrel positioning step 3, outer cylinder body positioning step 4, flange part 5, inner barrel part 6, outer cylinder body part 7, bevel for welding 8.
Embodiment
A kind of manufacture method that can have the aerodynamic experiment diffuser that friendship is improved the quality of products and assembling speed is fast provided by the invention as shown in Figure 1 and Figure 2.Described manufacture method comprises the following steps,
A, to get the raw materials ready and part makes, first according to each detail drawing of described diffuser respectively blanking prepare flange blank, inner barrel blank, outer cylinder body blank and spacer ferrule 1, and on described outer cylinder body blank chamfering bit pilot hole 2; Then flange blank is processed into the flange part 5 with inner barrel positioning step 3 and outer cylinder body positioning step 4 stand-by, inner barrel blank and outer cylinder body blank is rolled into inner barrel part 6 respectively and outer cylinder body part 7 is stand-by,
B, parts make, and be the diffuser element that described inner barrel part 6 and outer cylinder body part 7 to be assembled into two ends and all to include described flange part 5 by benchmark, and spot welding are firm with the inner barrel positioning step 3 on described flange part 5 and outer cylinder body positioning step 4; And then described spacer ferrule 1 is inserted in described pilot hole 2, and the respective wall millet cake of the front end of described spacer ferrule 1 and described inner barrel part 6 is welded solid, by firm for the madial wall spot welding of the rear end of described spacer ferrule 1 and described pilot hole 2, make diffuser element blank; Finally connect the order of weldering by described diffuser element blank welding diffuser element by first pilot hole welding rear flange,
C, the hydraulic testing, first carry out the hydraulic testing to the diffuser element that step b makes by 1.25 times of designing requirement pressure, carry out again after qualified rust cleaning polishing anticorrosion after treat always,
D, general assembly, finally by the diffuser that the diffuser element that step c obtains has been assembled into, complete once the making work of described aerodynamic experiment diffuser.
Owing to being provided with inner barrel positioning step 3 and outer cylinder body positioning step 4 on described flange part 5, the thickness requirement of inner barrel when so both ensure that assembling and about 5 ㎜ between outer cylinder body, simultaneously, owing to having described inner barrel positioning step 3 and outer cylinder body positioning step 4, effectively can also improve assembling speed and effective correct inside and outside cylindrical shell in coiling process, occur more qualitative defects.And in described plug welding hole, first insert described spacer ferrule 1, and then described inner barrel is connected as a whole with outer cylinder body by described spacer ferrule 1, namely first one end of the insertion pilot hole of described spacer ferrule 1 and inner barrel are welded, again the pilot hole on the other end of spacer ferrule 1 and described shell body is welded, like this, not only can effectively overcome in welding process, the intensity defect that inside and outside cylindrical shell produces because of distortion and open defect, reach the object of effectively improving the quality of products, but also effectively can improve speed of welding.
In above-mentioned embodiment, in order to further improve the welding quality of each section of diffuser element forming described diffuser, especially the welding quality of inner barrel part 6 and outer cylinder body part 7 and method half part 5, when the flange part 5 described in processing, on the axial madial wall of described flange part 5 and in radial sidewalls, process the bevel for welding 8 for welding inner barrel and outer cylinder body simultaneously.And conveniently described flange part 5 welds with described inner barrel part 6 and described outer cylinder body part 7, and the conveniently spacer ferrule welding of welding with described inner barrel part 6 and described outer cylinder body part 7, in step b, when the diffuser element described in making, simultaneously at two ends welding equipment water inlet pipe and the rising pipe of described diffuser element, described water inlet pipe and the erection welding again after Flange joint weldering and pilot hole have been welded of described rising pipe.
And in order to improve the presentation quality of described each section of diffuser element, especially the presentation quality of plug welding, in step b, when described spacer ferrule 1 is welded with described inner barrel part 6 and pilot hole 2, the inside of described spacer ferrule 1 is filled up to by built-up welding simultaneously and flushes with the lateral wall of outer cylinder body part 7; And when making outer cylinder body part 7, adopting the board making of at least thick 4 ㎜s larger than design thickness, and after described diffuser element welding equipment, after the hydraulic testing is qualified, removing the high and/or overlap of the weldering of protruding when spacer ferrule 1 is inner described in built-up welding by turning.
With reference to prior art, in step a, when inner barrel blank and outer cylinder body blank are prepared in blanking, also first adopt computer setting-out typesetting, then adopt based automatic flame cutting device gas cutting to carry out blanking.Like this, both can ensure blanking quality, blanking progress can be improved again.
Claims (6)
1. a manufacture method for aerodynamic experiment diffuser, is characterized in that: comprise the following steps,
A, to get the raw materials ready and part makes, first according to each detail drawing of described diffuser respectively blanking prepare flange blank, inner barrel blank, outer cylinder body blank and spacer ferrule (1), and on described outer cylinder body blank chamfering bit pilot hole (2); Then flange blank is processed into the flange part (5) with inner barrel positioning step (3) and outer cylinder body positioning step (4) stand-by, inner barrel blank and outer cylinder body blank are rolled into inner barrel part (6) respectively and outer cylinder body part (7) is stand-by
B, parts make, with the inner barrel positioning step (3) on described flange part (5) and outer cylinder body positioning step (4) for described inner barrel part (6) and outer cylinder body part (7) to be assembled into the diffuser element that two ends all include described flange part (5) by benchmark, and spot welding is firm; And then by the pilot hole (2) described in the insertion of described spacer ferrule (1), and the respective wall millet cake of the front end of described spacer ferrule (1) and described inner barrel part (6) is welded solid, by firm for the madial wall spot welding of the rear end of described spacer ferrule (1) and described pilot hole (2), make diffuser element blank; Finally connect the order of weldering by described diffuser element blank welding diffuser element by first pilot hole welding rear flange,
C, the hydraulic testing, first carry out the hydraulic testing to the diffuser element that step b makes by 1.25 times of designing requirement pressure, carry out again after qualified rust cleaning polishing anticorrosion after treat always,
D, general assembly, finally by the diffuser that the diffuser element that step c obtains has been assembled into, complete once the making work of described aerodynamic experiment diffuser.
2. the manufacture method of aerodynamic experiment diffuser according to claim 1, it is characterized in that: when flange part (5) described in processing, on the axial madial wall of described flange part (5) and in radial sidewalls, process the bevel for welding (8) for welding inner barrel and outer cylinder body simultaneously.
3. the manufacture method of aerodynamic experiment diffuser according to claim 1, it is characterized in that: in step b, when the diffuser element described in making, simultaneously at two ends welding equipment water inlet pipe and the rising pipe of described diffuser element, described water inlet pipe and the erection welding again after Flange joint weldering and pilot hole have been welded of described rising pipe.
4. the manufacture method of the aerodynamic experiment diffuser according to claim 1,2 or 3, it is characterized in that: in step b, when described spacer ferrule (1) is welded with described inner barrel part (6) and pilot hole (2), the inside of described spacer ferrule (1) is filled up to by built-up welding simultaneously and flushes with the lateral wall of outer cylinder body part (7).
5. the manufacture method of aerodynamic experiment diffuser according to claim 4, it is characterized in that: when making outer cylinder body part (7), adopt the board making of at least thick 4 ㎜s larger than design thickness, and after described diffuser element welding equipment, after the hydraulic testing is qualified by turning remove spacer ferrule (1) described in built-up welding inner time the weldering of protruding high and/or overlap.
6. the manufacture method of aerodynamic experiment diffuser according to claim 4, it is characterized in that: in step a, when inner barrel blank and outer cylinder body blank are prepared in blanking, first adopt computer setting-out typesetting, then adopt based automatic flame cutting device oxygen-acetylene cutting.
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| CN201510044240.6A CN104596723B (en) | 2015-01-28 | 2015-01-28 | The manufacture method of aerodynamic experiment diffuser |
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| CN201510044240.6A CN104596723B (en) | 2015-01-28 | 2015-01-28 | The manufacture method of aerodynamic experiment diffuser |
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| CN104596723B CN104596723B (en) | 2017-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570920A (en) * | 2018-11-20 | 2019-04-05 | 四川航天中天动力装备有限责任公司 | A kind of wave-pieced type diffuser matrix processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109570920A (en) * | 2018-11-20 | 2019-04-05 | 四川航天中天动力装备有限责任公司 | A kind of wave-pieced type diffuser matrix processing method |
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| CN104596723B (en) | 2017-06-16 |
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Inventor after: Wen Jiang Inventor before: Wang Yungui Inventor before: Huang Junming Inventor before: Luo Jianjun Inventor before: Wang Cunjiang Inventor before: Jiang Hui |
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Effective date of registration: 20180502 Address after: 610046 No. 1, 4 floor 1-5, 15 Wuxing four road, Wuhou District, Chengdu, Sichuan. Patentee after: SICHUAN SHANGYUAN TIANJIAO CONSTRUCTION ENGINEERING CO., LTD. Address before: 610027 1, 19 1, 1 ginkgo Road, Jinniu District, Chengdu, Sichuan. Patentee before: ZHONGYU YUANFA INTERNATIONAL CONSTRUCTION GROUP CO., LTD. |
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