CN109580233B - Sealing device for channel gas flow test - Google Patents
Sealing device for channel gas flow test Download PDFInfo
- Publication number
- CN109580233B CN109580233B CN201811385682.7A CN201811385682A CN109580233B CN 109580233 B CN109580233 B CN 109580233B CN 201811385682 A CN201811385682 A CN 201811385682A CN 109580233 B CN109580233 B CN 109580233B
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- side wall
- upper cover
- sealing rubber
- end surface
- annular
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Testing Of Engines (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A sealing device for a channel gas flow test comprises a base, an inner sealing rubber mat, an outer sealing rubber mat, an upper cover disc, a gas inlet, a pressure plate and a pressure plate bolt, wherein through the implementation of the invention, the base is provided with a form of an annular concave groove, and a tight pressing mode of the upper cover disc and a cover plate combined sealing rubber mat is combined, so that an inner ring of a pre-spinning nozzle for testing is fastened on the base, and then the gas flow test is carried out through the gas inlet arranged on the outer side wall of the base; the flow measurement is accurate, and the gas fluidity is good.
Description
Technical Field
The invention belongs to the technical field of engine tests, and particularly relates to a sealing device for a channel gas flow test.
Background
In an aircraft engine test, a gas flow test needs to be carried out on the inner ring of the pre-rotation nozzle, a cold gas flow path and different air inlet pressures need to be controlled during the test, the working temperature of the blades is reduced, the cooling requirement of the working blades is met, the requirement of the flow passage area between the blades is met, and air inlet from one end of the inner ring of the pre-rotation nozzle and air outlet from the other end of the inner ring of the pre-rotation nozzle are realized; the prior art is as shown in figure 2, the structure of an upper cover disc, a sealing rubber gasket, a pressing plate, a base, an O-shaped sealing rubber ring, a pressing ring and a screw is adopted, after the pre-spinning nozzle inner ring is fixed by the upper cover disc, the sealing rubber gasket and the pressing plate, the part is reversely buckled on the base, an inner hole of the pre-spinning nozzle inner ring is sealed through the O-shaped sealing rubber ring, the pressing ring and the upper cover disc are pressed tightly by the screw, a sealed air inlet cavity is formed, the sealing device of the structure is relatively complex in operation, and the sealing device is not suitable for a gas flow test of the pre-spinning nozzle inner ring after modification.
Disclosure of Invention
In order to solve the technical problems, the invention provides the sealing device for the channel gas flow test, which ensures the smooth operation of the gas flow test through a reasonable structure, is simple and convenient to operate and is easy to assemble and disassemble.
The invention is realized by the following technical scheme.
The invention provides a sealing device for a channel gas flow test, which comprises a base, an inner sealing rubber pad, an outer sealing rubber pad, an upper cover disc, a gas inlet, a pressure plate and a pressure plate bolt, wherein the base is of an annular table structure, an annular concave groove is formed in the base along an annular table top, an outer annular groove is formed in the end face of the outer side wall of the annular concave groove, and an inner annular groove is formed in the end face of the inner side wall of the annular concave groove; the outer sealing rubber pad is arranged in an outer annular groove on the end face of the outer side wall of the annular concave groove; the inner sealing rubber gasket is arranged in an inner annular groove on the end surface of the inner side wall of the annular groove; the upper cover disc covers the outer annular groove on the end surface of the outer side wall of the annular concave groove, and is fastened on the end surface of the outer side wall of the annular concave groove by bolts when in use; the pressing plate is arranged on the inner annular groove of the end surface of the inner side wall of the annular groove and is fixed on the end surface of the inner annular groove of the end surface of the inner side wall of the annular groove through a pressing plate bolt; the air inlet is arranged on the outer side wall of the annular concave groove of the base, so that the annular concave groove is communicated with the outside; during the test, the two ends of the inner ring of the pre-rotation nozzle are respectively arranged on the inner sealing rubber gasket and the outer sealing rubber gasket, the two ends of the inner ring of the pre-rotation nozzle are respectively pressed by the upper cover disc and the pressing plate, the upper cover disc is fastened on the end surface of the outer side wall of the annular concave groove, and the pressing plate is fastened on the end surface of the inner side wall of the annular concave groove through the pressing plate bolt 8.
Furthermore, the handle is in a long handle rod shape and is arranged on the outer side wall of the upper cover plate.
Furthermore, the upper cover disc is a circular ring, and the diameter of the inner circle of the upper cover disc is larger than that of the outer circle of the pre-rotation nozzle inner ring 9.
Furthermore, the end face of the upper cover disc is evenly provided with 10-15 through holes along the circumference, and when the upper cover disc is used, the upper cover disc penetrates through the through holes through bolts to enter the base and is in compression connection with the base.
Furthermore, the air inlets are tube-shaped nozzles and are provided with a plurality of air inlets which are uniformly distributed on the outer wall of the base and are outwards and horizontally distributed.
Further, the number of the air inlets is 10-12.
Further, the pressing plates are a plurality of cuboids with platforms at the tail parts, are uniformly distributed on the upper end surface of the inner side of the annular concave groove of the base 1, and are pressed on the inner circle end surface of the inner ring of the pre-rotation nozzle during testing.
Further, the number of the pressing plates is 10-15.
Furthermore, the inner sealing rubber gasket and the outer sealing rubber gasket are both circular rings, and the thickness of the inner sealing rubber gasket and the thickness of the outer sealing rubber gasket are both 2-3 mm.
The invention has the beneficial effects that: through the implementation of the invention, the pre-spinning nozzle inner ring for testing is fastened on the base by arranging the annular concave groove on the base and combining the tight pressing mode of the upper cover plate and the cover plate combining the sealing rubber gasket, and then the gas flow is tested through the gas inlet arranged on the outer side wall of the base; the flow measurement is accurate, and the gas fluidity is good.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a prior art seal arrangement;
in the figure: 1-base, 2-inner sealing rubber pad, 3-outer sealing rubber pad, 4-upper cover disc, 5-air inlet, 6-pressure plate, 7-grab handle, 8-bolt and 9-prewhirl nozzle inner ring.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, a sealing device for a channel gas flow test comprises a base 1, an inner sealing rubber gasket 2, an outer sealing rubber gasket 3, an upper cover plate 4, a gas inlet 5, a pressure plate 6 and a pressure plate bolt 8, wherein the base 1 is of an annular table structure, an annular concave groove is formed in the base 1 along an annular table surface, an outer annular groove is formed in the end surface of the outer side wall of the annular concave groove, and an inner annular groove is formed in the end surface of the inner side wall of the annular concave groove; the outer sealing rubber pad 3 is arranged in an outer annular groove of the end face of the outer side wall of the annular concave groove; the inner sealing rubber gasket 2 is arranged in an inner annular groove on the end surface of the inner side wall of the annular groove; the upper cover disc 4 covers the outer annular groove on the end surface of the outer side wall of the annular concave groove, and the upper cover disc 4 is fastened on the end surface of the outer side wall of the annular concave groove by bolts when in use; the pressing plate 6 is arranged on an inner annular groove of the end surface of the inner side wall of the annular groove and is fixed on the end surface of the inner annular groove of the end surface of the inner side wall of the annular groove through a pressing plate bolt 8; the air inlet 5 is arranged on the outer side wall of the annular concave groove of the base 1, so that the annular concave groove is communicated with the outside; during the test, the two ends of the inner ring 9 of the pre-rotation nozzle are respectively arranged on the inner sealing rubber pad 2 and the outer sealing rubber pad 3, the upper cover disc 4 and the pressure plate 6 are respectively pressed against the two ends of the inner ring 9 of the pre-rotation nozzle, the upper cover disc 4 is fastened on the end surface of the outer side wall of the annular concave groove, and the pressure plate 6 is fastened on the end surface of the inner side wall of the annular concave groove through the pressure plate bolt 8.
Further, the utility model also comprises a grab handle 7, wherein the grab handle 7 is in the shape of a long handle rod and is arranged on the outer side wall of the upper cover plate 4.
Furthermore, the upper cover disc 4 is a circular ring, and the diameter of the inner circle of the upper cover disc 4 is larger than that of the outer circle of the pre-rotation nozzle inner ring 9.
Furthermore, the upper cover disc 4 is evenly provided with 10-15 through holes along the circumference on the end surface, and when in use, the upper cover disc passes through the through holes through bolts to enter the base and is in compression connection with the base 1.
Furthermore, the air inlets 5 are tube-shaped nozzles and are provided with a plurality of air inlets which are uniformly distributed on the outer wall of the base 1 and are outwards and horizontally distributed.
Further, the number of the air inlets 5 is 10-12.
Further, the pressing plates 6 are a plurality of cuboids with platforms at the tail parts, are uniformly distributed on the upper end surface of the inner side of the annular concave groove of the base 1, and are pressed on the inner circle end surface of the inner ring 9 of the pre-rotation nozzle during testing.
Further, the number of the pressing plates 6 is 10-15.
Further, the inner sealing rubber mat 2 and the outer sealing rubber mat 3 are both circular rings, and the thickness is 3 mm.
The prewhirl nozzle inner ring 9 realizes sealing through the inner sealing rubber mat 2 and the outer sealing rubber mat 3, ensures air tightness, can smoothly perform air flow tests, and ensures uniform distribution of circumferential air pressure flow through the arrangement mode of the air inlet 5.
Claims (9)
1. A sealing device for a channel gas flow test is characterized in that: the sealing device comprises a base (1), an inner sealing rubber gasket (2), an outer sealing rubber gasket (3), an upper cover plate (4), an air inlet (5), a pressing plate (6) and a pressing plate bolt (8), wherein the base (1) is of an annular table structure, an annular concave groove is formed in the base (1) along an annular table top, an outer annular groove is formed in the end face of the outer side wall of the annular concave groove, and an inner annular groove is formed in the end face of the inner side wall of the annular concave groove; the outer sealing rubber pad (3) is arranged in an outer annular groove of the end face of the outer side wall of the annular concave groove; the inner sealing rubber gasket (2) is arranged in an inner annular groove on the end surface of the inner side wall of the annular groove; the upper cover disc (4) covers the outer annular groove on the end surface of the outer side wall of the annular concave groove, and the upper cover disc (4) is fastened on the end surface of the outer side wall of the annular concave groove by bolts when in use; the pressing plate (6) is arranged on the inner annular groove of the end surface of the inner side wall of the annular groove and is fixed on the end surface of the inner annular groove of the end surface of the inner side wall of the annular groove through a pressing plate bolt (8); the air inlet (5) is arranged on the outer side wall of the annular concave groove of the base (1) to enable the annular concave groove to be communicated with the outside; when the test is carried out, two ends of the inner ring (9) of the prewhirl nozzle are respectively arranged on the inner sealing rubber mat (2) and the outer sealing rubber mat (3), then the upper cover disc (4) and the pressure plate (6) are respectively pressed against two ends of the inner ring (9) of the prewhirl nozzle, the upper cover disc (4) is fastened on the end surface of the outer side wall of the annular concave groove, and the pressure plate (6) is fastened on the end surface of the inner side wall of the annular concave groove through the pressure plate bolt (8).
2. The seal for channel gas flow testing of claim 1, wherein: the novel multifunctional cover plate is characterized by further comprising a grab handle (7), wherein the grab handle (7) is in the shape of a long handle rod and is arranged on the outer side wall of the upper cover plate (4).
3. The seal for channel gas flow testing of claim 1, wherein: the upper cover disc (4) is a circular ring, and the diameter of the inner circle of the upper cover disc (4) is larger than that of the outer circle of the pre-rotation nozzle inner ring (9).
4. The seal for channel gas flow testing of claim 3, wherein: the upper cover disc (4) is evenly provided with 10-15 through holes along the circumference on the end surface, and when in use, the upper cover disc passes through the through holes through bolts to enter the base and is connected with the base (1) in a pressing mode.
5. The seal for channel gas flow testing of claim 1, wherein: the air inlets (5) are tube-shaped nozzles and are uniformly distributed on the outer wall of the base (1) and are outwards and horizontally distributed.
6. The seal for channel gas flow testing of claim 5, wherein: the number of the air inlets (5) is 10-12.
7. The seal for channel gas flow testing of claim 1, wherein: the pressing plates (6) are a plurality of cuboids with platforms at the tail parts, are uniformly distributed on the upper end surface of the inner side of the annular concave groove of the base (1), and are pressed on the inner circle end surface of the pre-rotation nozzle inner ring (9) during testing.
8. The seal for channel gas flow testing of claim 7, wherein: the number of the pressing plates (6) is 10-15.
9. The seal for channel gas flow testing of claim 1, wherein: the inner sealing rubber mat (2) and the outer sealing rubber mat (3) are both circular rings, and the thickness of the inner sealing rubber mat and the outer sealing rubber mat is 2-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385682.7A CN109580233B (en) | 2018-11-20 | 2018-11-20 | Sealing device for channel gas flow test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385682.7A CN109580233B (en) | 2018-11-20 | 2018-11-20 | Sealing device for channel gas flow test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109580233A CN109580233A (en) | 2019-04-05 |
| CN109580233B true CN109580233B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811385682.7A Active CN109580233B (en) | 2018-11-20 | 2018-11-20 | Sealing device for channel gas flow test |
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| Country | Link |
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| CN (1) | CN109580233B (en) |
Citations (4)
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| CN105403409A (en) * | 2015-12-10 | 2016-03-16 | 贵州黎阳航空动力有限公司 | Moderate thrust aero-engine testing switching device |
| CN205209771U (en) * | 2015-12-10 | 2016-05-04 | 贵州黎阳航空动力有限公司 | Aeroengine turbine disc gas flow test device |
| CN108061624A (en) * | 2017-11-21 | 2018-05-22 | 四川成发普睿玛机械工业制造有限责任公司 | The air mass flow of aerial motor spare part and seal tightness test platform and test method |
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| GB1277212A (en) * | 1968-09-26 | 1972-06-07 | Rolls Royce | A sealing device |
| US4348157A (en) * | 1978-10-26 | 1982-09-07 | Rolls-Royce Limited | Air cooled turbine for a gas turbine engine |
| DE10318852A1 (en) * | 2003-04-25 | 2004-11-11 | Rolls-Royce Deutschland Ltd & Co Kg | Main gas duct inner seal of a high pressure turbine |
| EP3130750B1 (en) * | 2015-08-14 | 2018-03-28 | Ansaldo Energia Switzerland AG | Gas turbine cooling system |
| CN105334064B (en) * | 2015-12-10 | 2018-09-07 | 贵州黎阳航空动力有限公司 | A kind of binary channels flow test switching device |
| CN206221650U (en) * | 2016-12-01 | 2017-06-06 | 兰州华冶技术工程股份有限公司 | Double tenon slot sealing arrangement |
| CN106523037A (en) * | 2016-12-12 | 2017-03-22 | 中国燃气涡轮研究院 | Turbine baffle plate structure with high pre-rotation flowing path |
| CN206581990U (en) * | 2016-12-30 | 2017-10-24 | 中国航发商用航空发动机有限责任公司 | The system of obturaging of prewhirling of aero-engine |
| CN207750644U (en) * | 2017-12-31 | 2018-08-21 | 天津市力拓钢制品有限公司 | A kind of internal plastic coating coating steel pipe elbow connection structure |
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2018
- 2018-11-20 CN CN201811385682.7A patent/CN109580233B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201262594Y (en) * | 2008-09-10 | 2009-06-24 | 西安航空发动机（集团）有限公司 | Test device for aerial engine crankcase air mass flow |
| CN105403409A (en) * | 2015-12-10 | 2016-03-16 | 贵州黎阳航空动力有限公司 | Moderate thrust aero-engine testing switching device |
| CN205209771U (en) * | 2015-12-10 | 2016-05-04 | 贵州黎阳航空动力有限公司 | Aeroengine turbine disc gas flow test device |
| CN108061624A (en) * | 2017-11-21 | 2018-05-22 | 四川成发普睿玛机械工业制造有限责任公司 | The air mass flow of aerial motor spare part and seal tightness test platform and test method |
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| CN109580233A (en) | 2019-04-05 |
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