CN105300285A - Assembling quality checking method for pipeline 74-degree double-conical-surface sealing structure - Google Patents
Assembling quality checking method for pipeline 74-degree double-conical-surface sealing structure Download PDFInfo
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- CN105300285A CN105300285A CN201510818337.8A CN201510818337A CN105300285A CN 105300285 A CN105300285 A CN 105300285A CN 201510818337 A CN201510818337 A CN 201510818337A CN 105300285 A CN105300285 A CN 105300285A
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Abstract
The invention relates to the field of aeroengines and gas turbines, and concretely relates to an assembling quality checking method for a pipeline 74-degree double-conical-surface sealing structure. The method comprises the steps: firstly, coating straight segments of parts connecting a 74-degree inner cone joint with conduits in parallel colored stripes that are parallel to the end face of the 74-degree inner cone joint; secondly, assembling a 74-degree outer cone joint and the 74-degree inner cone joint according to normal assembling requirements, and screwing up an applied nut; and thirdly, observing whether the exposed portions of the parallel colored stripes coating the straight segments of the parts connecting the 74-degree inner cone joint with the conduits are parallel, determining that the assembling quality of a 74-degree double-conical-surface sealing structure is good if the exposed stripes exhibit good parallelism, and determining that the assembling quality of a 74-degree double-conical-surface sealing structure is poor and correcting the corresponding conduits if the exposed stripes exhibit bad parallelism. The assembling quality checking method can fully check the assembling quality of a pipeline 74-degree double-conical-surface sealing structure of an aeroengine or a gas turbine, and can be applied to a pipeline 74-degree double-conical-surface sealing structure of an aeroengine or a gas turbine.
Description
Technical field
The present invention relates to aeromotor and gas turbine field, be specially a kind of pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods.
Background technology
As shown in Figure 1,74 ° of Double-conical-surface hermetically-sealed constructions are that the common pipeline of gas turbine connects, seal structure, 74 ° of Double-conical-surface hermetically-sealed constructions are generally made up of taper joint 3 in 74 ° of outside cone joints 1, caption nut 2,74 ° and conduit (conduit 4 and conduit 5), and 74 ° of outside cone joints 1 have external thread.In practical set process, in 74 ° of outside cone joints 1 and 74 °, taper joint 3 is fitted by Double-conical-surface, and in caption nut 2 and 74 °, taper joint 3 end face coordinates, and on the external thread being threaded into 74 ° of outside cone joints 1 of caption nut 2, realizes sealing assembly connection.
In theory, 74 ° of Double-conical-surfaces are sealed into face contact sealing, and its shortcoming is: only have Double-conical-surface to fit like a glove guarantee sealing, therefore need the concentricity ensureing joint, can not exceed the limit of error, joint sealing realizes by structure.Pipeline on the engine external diameter < 16mm (can manually adjust, school is managed) is just easy to assembling, is just difficult to assembling if exceeded.Its structure is simple, and manufacture and mounting process well, are applied in low pressure pipe with small pipe diameter place, as in engine oil leakage system.But, in practical set process, because conduit 4 and conduit 5 affect decentraction by conduit cast, the oil leakage fault as shown in Fig. 2 (a)-Fig. 2 (b) can be caused, because of aeromotor and gas turbine pipeline space structure complexity, conduit cast, structure are not fixed, and there is no the effective inspection method to 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities or device at present.
Summary of the invention
The object of the present invention is to provide a kind of pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, by a kind of method of convenient operation, when not by third party's upgrade kit or technology, by the visual inspection that can realize pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities, thus improve pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities, avoid the generation of this kind of structure pipeline oil leakage fault.
Technical scheme of the present invention is:
A kind of pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, concrete steps are as follows:
Step one: in 74 ° outside taper joint and tubes connection straight section, is coated with the parallel band vitta line being parallel to 74 ° of inner cone joint end faces;
Step 2: assemble 74 ° of outside cone joints by normal matching requirements, taper joint in 74 °, tightens caption nut;
Step 3: in observing 74 °, whether taper joint and the parallel band vitta line of tubes connection straight section outer application spill partly parallel; If the striped depth of parallelism spilt is better, then 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities are better; If the striped depth of parallelism spilt is poor, then 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities are poor, need to correct associated catheter, ensure the assembly quality of 74 ° of Double-conical-surface hermetically-sealed constructions when making the striped depth of parallelism that spills better.
Described pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, in 74 ° of Double-conical-surface hermetically-sealed constructions, the external thread of 74 ° of outside cone joints and the internal thread of caption nut, adopted high-precision tolerance fit mode, realized the concentricity of caption nut and 74 ° of outside cone joints by screw thread.
Described pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, in 74 ° of Double-conical-surface hermetically-sealed constructions, 74 ° of inner cone joint end faces and caption nut end face, adopt high-precision tolerance fit mode, realize the verticality of 74 ° of inner cone coupling axis and 74 ° of inner cone joint end faces respectively, and the verticality of the internal thread of caption nut and caption nut end face, ensure the laminating of caption nut end face and 74 ° of inner cone joint end faces.
Described pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, the parallel band vitta line of taper joint and tubes connection straight section outer application in 74 °, after being assembled by visual examination, band vitta literary composition parallel condition realizes the inspection of assembly quality.
Advantage of the present invention and beneficial effect are:
1, the method for the invention is adopted, can check aeromotor and gas turbine pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities simply and intuitively, effectively can avoid the oil leakage fault because pipe adapter decentraction causes, effectively can shorten aeromotor and gas turbine production cycle and pipeline leakage of oil troubleshooting cycle, improve the security of gas turbine.
2, the present invention is by actual test, the complete inspection that can meet aeromotor and gas turbine pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities, can use in various aeromotor and gas turbine pipeline 74 ° of Double-conical-surface hermetically-sealed constructions, wide market.
Accompanying drawing explanation
Fig. 1 is existing 74 ° of Double-conical-surface sealed structural representations.
Fig. 2 (a)-Fig. 2 (b) is the oil leakage fault schematic diagram that 74 ° of Double-conical-surface decentraction cause.Wherein, the sealing that Fig. 2 (a) is pipe adapter concentricity difference contacts illusion; The leakage path that Fig. 2 (b) causes for pipe adapter concentricity difference.
Fig. 3 (a)-Fig. 3 (b) is the external thread of 74 ° of outside cone joints and the female thread structure schematic diagram of caption nut.Wherein, Fig. 3 (a) is 74 ° of outside cone joints; Fig. 3 (b) is caption nut.
Fig. 4 (a)-Fig. 4 (b) is 74 ° of inner cone joint end faces and caption nut end face structure schematic diagram.Wherein, Fig. 4 (a) is taper joint in 74 °; Fig. 4 (b) is caption nut.
Fig. 5 in 74 °, taper joint is coated with parallel band vitta line schematic diagram.
Fig. 6 is 74 ° of good schematic diagram of Double-conical-surface hermetically-sealed construction assembly quality.
Fig. 7 is the poor schematic diagram of 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities.
In figure, 1-74 ° of outside cone joint; 2-caption nut; Taper joint in 3-74 °; 4-conduit; 5-conduit; 6-external thread; 7-internal thread; 8-74 ° of inner cone joint end face; 9-caption nut end face; 10-parallel band vitta line.
Embodiment
In specific implementation process, 74 ° of Double-conical-surface hermetically-sealed constructions have become a kind of conventional seal structure of gas turbine exterior line, in order to ensure its sealing property, are indispensable to the inspection of its assembly quality.
As shown in Fig. 1, Fig. 3 (a)-Fig. 3 (b), in 74 ° of Double-conical-surface hermetically-sealed constructions, the external thread 6 of 74 ° of outside cone joints 1 adopts high-precision tolerance fit mode with the internal thread 7 of caption nut 2, is namely realized the concentricity of caption nut 2 and 74 ° of outside cone joints 1 by threaded engagement.
As shown in Fig. 1, Fig. 4 (a)-Fig. 4 (b), 74 ° of inner cone joint end faces 8 and caption nut end face 9 are in process, also processed by high precision, realize the verticality of taper joint 3 end face in taper joint 3 axle center in 74 ° and 74 ° respectively, and the internal thread 7 of caption nut 2 and the verticality of caption nut end face 9.Can be drawn by the structure of correlated parts, ensure the laminating of caption nut end face 9 and 74 ° of inner cone joint end faces 8, the concentricity of taper joint 3 in 74 ° of outside cone joints 1,74 ° can be ensured.
As shown in Fig. 1, Fig. 4 (a)-Fig. 4 (b), Fig. 5, taper joint 3 axis perpendicular in 74 ° of inner cone joint end faces 8 and 74 °, 74 ° of inner cone joint end faces 8 are parallel with parallel band vitta line 10, and namely parallel band vitta line 10 is vertical with taper joint 3 axle center in 74 °.
As shown in Fig. 1, Fig. 4 (a)-Fig. 4 (b), Fig. 6, when during assembling, in 74 °, taper joint 3 is concentric with 74 ° of outside cone joints 1, then 74 ° of inner cone joint end faces 8 are fitted completely with caption nut end face 9, then parallel band vitta line 10 depth of parallelism spilt is better.
As shown in Fig. 1, Fig. 4 (a)-Fig. 4 (b), Fig. 7, during assembling in 74 ° when taper joint 3 and 74 ° of outside cone joint 1 decentraction, then 74 ° of inner cone joint end faces 8 are not exclusively fitted with caption nut end face 9, then parallel band vitta line 10 depth of parallelism spilt is poor.
Pipeline of the present invention 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, concrete steps are as follows:
Step one: taper joint 3 is connected outside straight section with conduit 5 in 74 °, is coated with the parallel band vitta line 10 being parallel to ° inner cone joint end face 8 of 74 shown in Fig. 4, sees Fig. 5.
Step 2: assemble taper joint 3 in 74 ° of outside cone joints 1,74 ° by normal matching requirements, tighten caption nut 2.
Step 3: whether the parallel band vitta line 10 that in observing 74 °, taper joint 3 and conduit 5 connect straight section outer application spills part parallel, if the striped depth of parallelism spilt better (Fig. 6), then 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities are better, tighten by matching requirements the sealing that caption nut 2 can ensure structure; If the striped depth of parallelism spilt poor (Fig. 7), then 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities are poor, need correct associated catheter, ensure concentricity during pipe adapter assembling.
Embodiment
The Double-conical-surface hermetically-sealed construction generation leakage of oil of 74 °, gas turbine one place, need decompose conduit, corrects, ressemble, 10 minutes about consuming time of place's leakage of oil joint troubleshooting conduit.Adopt the method for the invention, energy Timeliness coverage 74 ° of Double-conical-surface hermetically-sealed construction assembly quality problems, can get rid of potential faults when assembling, can save the troubleshooting time of more than 90%, significantly raise labour efficiency, significantly reduce workman and reviewer's labour intensity simultaneously.
Claims (4)
1. pipeline 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, it is characterized in that, concrete steps are as follows:
Step one: in 74 ° outside taper joint and tubes connection straight section, is coated with the parallel band vitta line being parallel to 74 ° of inner cone joint end faces;
Step 2: assemble 74 ° of outside cone joints by normal matching requirements, taper joint in 74 °, tightens caption nut;
Step 3: in observing 74 °, whether taper joint and the parallel band vitta line of tubes connection straight section outer application spill partly parallel; If the striped depth of parallelism spilt is better, then 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities are better; If the striped depth of parallelism spilt is poor, then 74 ° of Double-conical-surface hermetically-sealed construction assembly qualities are poor, need to correct associated catheter, ensure the assembly quality of 74 ° of Double-conical-surface hermetically-sealed constructions when making the striped depth of parallelism that spills better.
2. according to pipeline according to claim 1 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, it is characterized in that, in 74 ° of Double-conical-surface hermetically-sealed constructions, the external thread of 74 ° of outside cone joints and the internal thread of caption nut, adopt high-precision tolerance fit mode, realized the concentricity of caption nut and 74 ° of outside cone joints by screw thread.
3. according to pipeline according to claim 1 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, it is characterized in that, in 74 ° of Double-conical-surface hermetically-sealed constructions, 74 ° of inner cone joint end faces and caption nut end face, adopt high-precision tolerance fit mode, realize the verticality of 74 ° of inner cone coupling axis and 74 ° of inner cone joint end faces respectively, and the verticality of the internal thread of caption nut and caption nut end face, ensure the laminating of caption nut end face and 74 ° of inner cone joint end faces.
4. according to pipeline according to claim 1 74 ° of Double-conical-surface hermetically-sealed construction assembly quality inspection methods, it is characterized in that, the parallel band vitta line of taper joint and tubes connection straight section outer application in 74 °, after being assembled by visual examination, band vitta literary composition parallel condition realizes the inspection of assembly quality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510818337.8A CN105300285B (en) | 2015-11-20 | 2015-11-20 | A kind of 74 ° of bipyramid surface seal structure assembling detection method for quality of pipeline |
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| CN201510818337.8A CN105300285B (en) | 2015-11-20 | 2015-11-20 | A kind of 74 ° of bipyramid surface seal structure assembling detection method for quality of pipeline |
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| CN105300285B CN105300285B (en) | 2018-05-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106017287A (en) * | 2016-08-10 | 2016-10-12 | 中国人民解放军第五七二工厂 | Concentricity measuring gauge for 74-degree guide pipe conical hole |
| CN106768734A (en) * | 2016-11-22 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | The sealing propertytest measurer and its application method of a kind of conical surface sealing structure |
| CN109752382A (en) * | 2018-11-29 | 2019-05-14 | 中国航发沈阳黎明航空发动机有限责任公司 | One kind is about 74 ° of conical surface seal contact area inspection methods of pipeline |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106017287A (en) * | 2016-08-10 | 2016-10-12 | 中国人民解放军第五七二工厂 | Concentricity measuring gauge for 74-degree guide pipe conical hole |
| CN106768734A (en) * | 2016-11-22 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | The sealing propertytest measurer and its application method of a kind of conical surface sealing structure |
| CN109752382A (en) * | 2018-11-29 | 2019-05-14 | 中国航发沈阳黎明航空发动机有限责任公司 | One kind is about 74 ° of conical surface seal contact area inspection methods of pipeline |
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| CN105300285B (en) | 2018-05-04 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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