CN204974832U - School shape coupling mechanism is in charge of to fuel - Google Patents
School shape coupling mechanism is in charge of to fuel Download PDFInfo
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- CN204974832U CN204974832U CN201520771555.6U CN201520771555U CN204974832U CN 204974832 U CN204974832 U CN 204974832U CN 201520771555 U CN201520771555 U CN 201520771555U CN 204974832 U CN204974832 U CN 204974832U
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Abstract
The utility model provides a school shape coupling mechanism is in charge of to fuel, the assembly design technical field with the nozzle is in charge of to fuel that relates to gas turbine for being in charge of the fuel manifold intermediate fuel oil and covering junction school shape with the fuel nozzle, school shape cap nut is inboard for ring shape just is the cell type structure in the cross -section, is provided with the screw thread on one of them trough rim, school shape sheath be cylindrical structures, and wherein the one end inboard sets up bulge loop and the outside for the annular structure of notch cuttype, the other end and the fuel divides the tubular construction to mate and clearance fit, school shape sheath cover is in the fuel be in charge of with fix a position through school shape cap nut fuel nozzle lid junction. The utility model provides a school shape coupling mechanism is in charge of to fuel does not change current fuel manifold structure plan, adopts this coupling mechanism to simulate the assembly before actual assembly, then through suppressing or the method of test block inspection, whether the inspection assembly meets the requirements, has reduced the oil leak probability that causes after assembling.
Description
Technical field
The trim designs technical field with nozzle is in charge of by the fuel oil that the utility model relates to gas turbine, is in charge of Jiao Xing bindiny mechanism in particular to a kind of fuel oil.
Background technology
In modern gas turbines combustion chamber and experimental rig thereof, in order to reach higher reliability and security, usually in fuel manifold assembly to the contact position that nozzle and fuel oil are in charge of, carry out second protection.This kind of measure is more common in certain type Engine Series, and in current Air Passenger and Boeing airline carriers of passengers, a lot of type all adopts the engine of this series.But find in usual care and maintenance, because the sleeve pipe of second protection and fuel oil are in charge of, the quality of fit of nozzle all requires higher, after repeatedly assembling, itself is in charge of by fuel oil can produce distortion, causing fuel oil to be in charge of can not completely to the heart with nozzle contact position, when after installation oil-leakage-prevention sheath, cause fuel oil to be in charge of and produce stress with nozzle contact position, cause loose contact, fuel oil can not be sealed completely, under high pressure, the fuel oil of seepage will be deposited in oil-leakage-prevention sheath, fuel oil soaks the O-ring seal being used for second protection, cushion rubber can be made to lose efficacy, affect the security of engine.But when after assembling oil-leakage-prevention sheath, whether the fuel oil cannot observing the inside is in charge of with nozzle contact position intact, also cannot carry out bulge test to check, the experience of assembly crewman and technology can only be leaned on to ensure, virtually add the difficulty of assembling herein.
In prior art certain type Engine Series intermediate fuel oil be in charge of with fuel nozzle assembling cross-sectional view see Fig. 1, wherein oil-leakage-prevention sheath 2 is columnar structured, and coordinate fuel nozzle lid 6, fuel oil is in charge of 4, localized design switching, adopt the method for O-ring seal sealing, be in charge of 4 intermediate transit sections at fuel nozzle lid 6 head and fuel oil respectively and installed the first O-ring seal 3 and the second O-ring seal 5 respectively additional.First the mode of 4 employing balls cone sealings is in charge of by fuel nozzle lid 6 and fuel oil, by little cap nut 7 with the mode of screwed tight fuel oil is in charge of 4 and nozzle cover 6 contact position seal.By large cap nut 1 mode be screwed on fuel nozzle lid 6, oil-leakage-prevention sheath 2 is arranged on the outside that fuel nozzle 6 and fuel oil are in charge of 4, is reached the effect of secondary seal by the mode of press seal cushion rubber.
The technical problem needing now solution badly is, on the basis not changing original fuel manifold organization plan, how to design a kind of device/structure to check whether assembling meets the requirements, the leakage of oil probability caused after reducing assembling.
Utility model content
The purpose of this utility model is to solve above-mentioned deficiency of the prior art, there is provided a kind of simple and reasonable, do not change the inspection assembling that the basis of original fuel manifold organization plan is designed and whether meet the requirements, Jiao Xing bindiny mechanism is in charge of by the fuel oil of leakage of oil probability caused after reducing assembling.
The purpose of this utility model is achieved through the following technical solutions: Jiao Xing bindiny mechanism is in charge of by a kind of fuel oil, for checking fuel manifold intermediate fuel oil to be in charge of the sealing effectiveness with fuel nozzle lid junction, it is characterized in that, comprise:
School shape cap nut, inner side is annular and cross section is trench structure, wherein a trough rim is provided with screw thread, for being connected with fuel nozzle lid;
School shape sheath, for columnar structured, wherein arrange bulge loop inside one end and outside is the circulus of notch cuttype, effectively avoid the second O-ring seal, structure matching is in charge of by the other end and fuel oil and matched in clearance avoids the first O-ring seal effectively;
School shape sheath is enclosed within fuel oil and is in charge of with fuel nozzle lid junction and is located by school shape cap nut.Cap nut is fixedly connected on fuel nozzle by threaded trough rim and covers, and another trough rim is clamped by the circulus high-ranking officers shape sheath of bulge loop on the shape sheath of school and outside notch cuttype.
In such scheme preferably, school shape cap nut is threaded with fuel nozzle lid by arranging threaded trough rim.Ensure the stability and sealing that connect.
In above-mentioned either a program preferably, be in charge of at described fuel manifold intermediate fuel oil and with fuel nozzle lid junction, fuel oil be installed and be in charge of in Jiao Xing bindiny mechanism: L1 '=L1; L2 '=L2; L3 ' <L1 ', definition: L1 is the minimum range of oil-leakage-prevention sheath radial direction and described fuel nozzle lid; The minimum range that L1 ' is school shape sheath radial direction and described fuel nozzle lid; L2 is the minimum range that oil-leakage-prevention sheath radial direction and described fuel oil are in charge of; The minimum range that L2 ' is in charge of for school shape sheath radial direction and described fuel oil; The minimum range that L3 ' is school shape sheath radial direction and described school shape cap nut.
The beneficial effect that Jiao Xing bindiny mechanism is in charge of by fuel oil provided by the utility model is, structure is simple, easily manufactured, do not change original fuel manifold organization plan, before practical set, adopt this bindiny mechanism to carry out simulate assemble, then by the method suppressed or test piece is checked, check whether assembling meets the requirements, the leakage of oil probability caused after reducing assembling, the stability of device is high, safe and reliable.
Accompanying drawing explanation
Fig. 1 is that in prior art, certain type Engine Series intermediate fuel oil is in charge of the cross-sectional view with fuel nozzle assembling;
Fig. 2 is the cross-sectional view of the preferred embodiment being in charge of Jiao Xing bindiny mechanism according to fuel oil of the present utility model.
Reference numeral:
The large cap nut of 1-, 2-oil-leakage-prevention sheath, 3-first O-ring seal, 4-fuel oil are in charge of, 5-second O-ring seal, 6-fuel nozzle lid, the little cap nut of 7-, 1 '-school shape cap nut, 2 '-school shape sheath.
Detailed description of the invention
Be in charge of Jiao Xing bindiny mechanism in order to understand better according to the fuel oil of the utility model scheme, below in conjunction with accompanying drawing, explanation is further elaborated to the preferred embodiment that Jiao Xing bindiny mechanism is in charge of by fuel oil of the present utility model.
As shown in Figure 2, Jiao Xing bindiny mechanism is in charge of by the fuel oil that the utility model provides, and for the sealing effectiveness checking fuel manifold intermediate fuel oil to be in charge of 4 and fuel nozzle lid 6 junction, comprising:
School shape cap nut 1 ', inner side is annular and cross section is trench structure, wherein a trough rim is provided with screw thread; School shape sheath 2 ', for columnar structured, wherein arrange bulge loop inside one end and outside is the circulus of notch cuttype, the other end and described fuel oil are in charge of 4 structure matching and matched in clearance; School shape sheath 2 ' be enclosed within described fuel oil be in charge of 4 with described fuel nozzle lid 6 junction being located by school shape cap nut 1 '.
School shape cap nut 1 ' is threaded with fuel nozzle lid 6 by arranging threaded trough rim.Be threaded and can ensure the steadiness of connection, the air-tightness in school shape sheath 2 ' can be ensured simultaneously, prevent from leaking gas between school shape cap nut 1 ' and fuel nozzle lid 6, to fuel manifold intermediate fuel oil be in charge of 4 and the monitoring of sealing effectiveness of fuel nozzle lid 6 junction impact.
The fuel oil that the utility model provides is in charge of Jiao Xing bindiny mechanism and is in charge of 4 at fuel manifold intermediate fuel oil and installs fuel oil be in charge of in Jiao Xing bindiny mechanism with fuel nozzle lid 6 junction: L1 '=L1; L2 '=L2; L3 ' <L1 ', definition: L1 is the minimum range of oil-leakage-prevention sheath 2 radial direction and fuel nozzle lid 6; The minimum range that L1 ' is school shape sheath 2 ' radial direction and fuel nozzle lid 6; L2 is the minimum range that oil-leakage-prevention sheath 2 radial direction and fuel oil are in charge of 4; L2 ' is in charge of the minimum range of 4 for school shape sheath 2 ' radial direction and fuel oil; The minimum range that L3 ' is school shape sheath 2 ' radial direction and described school shape cap nut 1 '.Gap when adopting the design of this kind of mode just to ensure that the assembling of school shape is consistent with gap when truly assembling, and the location of school shape sheath 2 ' leans on school shape cap nut 1 ' to complete.
The fuel oil provided by the utility model is in charge of after Jiao Xing bindiny mechanism has assembled according to above-mentioned requirements and is smeared soap lather at the minimum range L2 ' place that the school shape sheath 2 ' radial direction of annular and fuel oil are in charge of 4, then pipeline is suppressed, namely by checking that whether soap lather is abnormal, judge that whether the sealing of ground floor is intact.If soap lather does not produce abnormal, need to correct shape pipeline, repeat assembling, meet the demands until reach.In addition, minimum range L2 ' the place that also can be in charge of 4 in the school shape sheath 2 ' radial direction of annular and fuel oil inserts the copper sheet less than L2 ' thickness or copper ring, whether produce stress by copper sheet or copper ring and judge whether pipeline meets the demands, if copper sheet or copper ring cannot pass through, need to correct shape pipeline, repeat assembling, meet the demands until reach.
More than be in charge of Jiao Xing bindiny mechanism specific embodiment in conjunction with fuel oil of the present utility model to be described in detail, but be not to restriction of the present utility model, everyly according to technical spirit of the present utility model, technical scope of the present utility model is all belonged to any simple modification made for any of the above embodiments, also it should be noted that, the category being in charge of Jiao Xing bindiny mechanism technical scheme according to fuel oil of the present utility model comprises any combination between each part mentioned above.
Claims (3)
1. a Jiao Xing bindiny mechanism is in charge of by fuel oil, for checking fuel manifold intermediate fuel oil to be in charge of (4) and the sealing effectiveness of fuel nozzle lid (6) junction, it is characterized in that, comprise:
School shape cap nut (1 '), inner side is annular and cross section is trench structure, wherein a trough rim is provided with screw thread;
School shape sheath (2 '), for columnar structured, wherein arrange bulge loop inside one end and outside is the circulus of notch cuttype, the other end and described fuel oil are in charge of (4) structure matching and matched in clearance;
School shape sheath (2 ') is enclosed within described fuel oil and is in charge of (4) and described fuel nozzle lid (6) junction and is located by school shape cap nut (1 ').
2. Jiao Xing bindiny mechanism is in charge of by fuel oil as claimed in claim 1, and it is characterized in that, described school shape cap nut (1 ') is threaded with described fuel nozzle lid (6) by arranging threaded trough rim.
3. Jiao Xing bindiny mechanism is in charge of by fuel oil as claimed in claim 1, it is characterized in that, is in charge of (4) and installs fuel oil with described fuel nozzle lid (6) junction and be in charge of in Jiao Xing bindiny mechanism: L1 '=L1 at described fuel manifold intermediate fuel oil; L2 '=L2; L3 ' < L1 ', definition: L1 is the minimum range of oil-leakage-prevention sheath (2) radial direction and described fuel nozzle lid (6); The minimum range that L1 ' is school shape sheath (2 ') radial direction and described fuel nozzle lid (6); L2 is the minimum range that oil-leakage-prevention sheath (2) radial direction and described fuel oil are in charge of (4); L2 ' is in charge of the minimum range of (4) for school shape sheath (2 ') radial direction and described fuel oil; The minimum range that L3 ' is school shape sheath (2 ') radial direction and described school shape cap nut (1 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771555.6U CN204974832U (en) | 2015-09-30 | 2015-09-30 | School shape coupling mechanism is in charge of to fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771555.6U CN204974832U (en) | 2015-09-30 | 2015-09-30 | School shape coupling mechanism is in charge of to fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204974832U true CN204974832U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520771555.6U Active CN204974832U (en) | 2015-09-30 | 2015-09-30 | School shape coupling mechanism is in charge of to fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204974832U (en) |
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2015
- 2015-09-30 CN CN201520771555.6U patent/CN204974832U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |