CN112254169A - Sealing structure of secondary oil way fuel nozzle valve - Google Patents
Sealing structure of secondary oil way fuel nozzle valve Download PDFInfo
- Publication number
- CN112254169A CN112254169A CN202011125826.2A CN202011125826A CN112254169A CN 112254169 A CN112254169 A CN 112254169A CN 202011125826 A CN202011125826 A CN 202011125826A CN 112254169 A CN112254169 A CN 112254169A
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- Prior art keywords
- fuel
- opening door
- nozzle
- oil
- door liner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The application provides a vice oil circuit fuel nozzle valve structure includes: an oil supply nipple; a secondary nozzle interface; the shell is arranged between the oil supply connector and the auxiliary nozzle connector, and a containing cavity is formed in the shell; the opening door liner is fixedly arranged in the containing cavity, and a plurality of oil leakage holes communicated with the oil supply connector and the auxiliary nozzle interface are formed in the opening door liner; a plunger penetrating through the opening door liner and relatively movable with the opening door liner, the plunger being supported on the opening door liner by an opening spring; the oil filter is arranged on one side of the opening door liner opposite to the fuel inlet and covers the oil leakage hole and is used for filtering fuel entering from the fuel supply nozzle; the plunger is provided with a conical sealing surface, the opening door liner is provided with a conical chamfer matched with the conical sealing surface, when fuel flowing in from the fuel supply connector reaches a preset pressure, the fuel pushes the plunger to move through the oil leakage hole and flows out from the auxiliary nozzle connector, and when the fuel flowing in from the fuel supply connector does not reach the preset pressure, the fuel is stored at one side of the fuel supply connector of the opening door liner.
Description
Technical Field
The application belongs to the technical field of aero-engines, and particularly relates to a sealing structure of a fuel nozzle valve of an auxiliary oil way.
Background
Fuel injectors are key components of aircraft engine combustion chambers and play an important role in engine performance. Fig. 1 shows a schematic structural diagram of a pipeline switching section of a currently-used aircraft engine secondary oil line nozzle test piece, the switching section includes an oil supply connector 1, a secondary oil pipeline 2 and a secondary nozzle connector 3, a thread 11 is arranged on the outer surface of the oil supply connector 1 and used for being connected with a test oil supply pipeline, and the oil supply connector 1, the secondary oil pipeline 2 and the secondary nozzle connector 3 are welded into a whole. The auxiliary oil delivery pipe 2 is a hollow elbow pipe, and the auxiliary nozzle interface 3 is composed of an external nut 31 and a conical nozzle 32. During the test, the external nut 31 of the sub-nozzle port 3 is connected to a sub-nozzle (not shown). During operation, the test oil supply pipeline provides fuel oil, then the fuel oil enters the downstream auxiliary nozzle from the oil supply connector 1 through the auxiliary oil delivery pipe 2 and the auxiliary nozzle connector 3, and under a certain oil supply pressure, the fuel oil is well atomized through the auxiliary nozzle.
However, the conventional secondary oil passage nozzle has the following disadvantages:
1) the test oil supply pipeline slightly provides some oil supply pressure, fuel oil flows into the auxiliary oil pipeline 2 in the auxiliary oil way, oil dripping occurs at the outlet of the auxiliary nozzle connector 3, the fuel oil is not sufficiently atomized, and the ignition performance of the combustion chamber is influenced;
2) when the test time is long, impurities in the fuel test system are easy to accumulate in a flow channel of the auxiliary nozzle, and fuel atomization is influenced, so that coking and carbon deposition are easy to occur;
3) during the two-time ignition or after the combustion, the test oil supply pipeline stops supplying oil, but fuel oil continues to flow into the combustion chamber, and when the fuel oil amount gradually accumulates to a certain amount, the risk of deflagration is generated during the next ignition and combustion.
Disclosure of Invention
It is an object of the present application to provide a secondary fuel line fuel nozzle flap arrangement to solve or mitigate at least one of the problems described above.
The technical scheme of the application is as follows: a secondary fuel line fuel nozzle valve structure, said valve structure comprising:
an oil supply nipple;
a secondary nozzle interface;
the shell is arranged between the oil supply connector and the auxiliary nozzle interface, and a cavity is formed in the shell;
the opening door lining is fixedly arranged in the containing cavity, and a plurality of oil leakage holes communicated with the oil supply connector and the auxiliary nozzle connector are formed in the opening door lining;
a plunger penetrating the opening door liner and movable relative to the opening door liner, the plunger being supported on the opening door liner by an opening spring; and
the oil filter is arranged on one side, opposite to a fuel inlet, of the opening door liner, covers the oil leakage hole and is used for filtering fuel entering from the fuel supply connector;
the plunger is provided with a conical sealing surface, the opening door liner is provided with a conical chamfer matched with the conical sealing surface, when fuel flowing in from the fuel supply connector reaches a preset pressure, the fuel pushes the plunger to move through the oil leakage hole and flows out from the auxiliary nozzle port, and when the fuel flowing in from the fuel supply connector does not reach the preset pressure, the fuel is stored on one side of the fuel supply connector of the opening door liner.
In the present application, the housing is detachably connected to the oil supply nipple; the shell is fixedly connected with the auxiliary nozzle interface.
In this application, the secondary nozzle interface includes external nut and the toper nipple that is used for being connected with secondary nozzle, external nut, toper nipple and casing fixed connection become one.
In this application, the casing with be equipped with sealed the pad between the fuel feeding connector, be used for realizing the casing with sealed between the fuel feeding connector.
In this application, the oil is strained and is passed through pressure spring spacing between fuel feeding nipple and opening the door liner.
In this application, the stop collar is installed through the rand to the tip of plunger, open the spring and set up between stop collar and opening the door lining.
In this application, a plurality of the oil leak hole is with the axis circumference equipartition of opening the door lining.
The application provides a vice oil circuit fuel nozzle valve structure can just can obtain better atomization performance at the time of vice nozzle at the beginning of operation, and the oil that sets up in the valve strains the impurity that can filter in the fuel oil system, avoids the impurity accumulation in the fuel oil system on the fuel oil runner, prevents in addition that ignition, combustion test or engine test from ending the time, and the fuel oil leaks and gets into the combustion chamber.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
Fig. 1 is a schematic diagram of a secondary oil path nozzle pipeline rotation stage in the prior art.
Fig. 2 is a schematic structural diagram of the secondary fuel line fuel nozzle valve of the present application.
Reference numerals:
100-valve structure
101-oil supply connector
102-shell
103-external nut
104-conical nozzle
105-gasket
106-opening door lining
107-plunger
108-oil filter
109-compression spring
110-position limiting sleeve
111-opening door spring
112-collar
113-sealing ring
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to overcome the shortcomings in the prior art, the application provides an auxiliary oil way fuel nozzle valve structure.
As shown in fig. 2, the present application provides a secondary fuel nozzle shutter structure 100 including: a fuel nozzle 101 for connection with a fuel supply line, a sub-nozzle connection for connection with a sub-nozzle, and a housing 102 disposed between the fuel nozzle 101 and the sub-nozzle connection. The shell 102 is a hollow structure, a cavity is formed in the shell, an opening door liner 106 is fixedly arranged in the cavity, a plurality of oil leakage holes 114 are formed in the opening door liner 106, and fuel oil can pass through the oil leakage holes 114 to open the downstream of the opening door liner 106 from an upstream flow passage of the opening door liner 106. The middle part of the opening door lining 106 is provided with a through hole, a plunger 107 is arranged in the through hole, and the plunger 107 and the opening door lining 106 can realize sliding. An opening door spring 111 is arranged between the opening door liner 106 and the plunger 107, and the opening door spring 111 can provide the spring force required for resetting the plunger 107. When the plunger 107 is at the initial position, the conical sealing surface of the plunger 107 is tightly attached to the conical chamfer at the corresponding position of the opening door liner 106, and at the moment, the sealing of the upstream part of the opening door liner 106 can be realized; when the pressure of the fuel flowing from the fuel feed nipple 101 continues to increase, the plunger 107 is pushed by the fuel flowing in through the oil leak hole, so that a gap is formed between the tapered seal surface and the tapered chamfer at the position where the opening gate bush 106 is fitted, and the fuel flows out to the sub-nozzle port.
In an embodiment of the present application, the housing 102 is detachably connected to the fuel nozzle 101 to facilitate the installation of the components in the housing 102. The detachable connection may be achieved by providing an external thread on the housing 102 and an internal thread on the fuel nozzle 101, for example, by screwing. The housing 102 and the auxiliary oil nozzle interface may be fixedly connected, for example, the housing 102 and the auxiliary oil nozzle interface may be welded and fixed by welding.
Further, the secondary oil nozzle interface may further include an external nut 103 and a tapered nozzle 104, and the connection between the valve structure 100 and the secondary oil nozzle (not shown) is achieved through the external nut 103 and the tapered nozzle 104. The external nut 103 and the tapered nozzle 104 may be integrally fixed to the housing 102 by welding.
In one embodiment of the present application, the fuel nozzle 101 and the housing 102 are provided with a gasket 105 to ensure that the fuel between the fuel nozzle 101 and the housing 102 does not leak.
The oil filter 108 is placed on the opening door liner 106, the oil filter 108 is used for filtering fuel, in order to fix the oil filter 108, in an embodiment of the present application, a compression spring 109 may be sleeved on the oil filter 108, an upper side of the compression spring 109 is compressed by a lower end face of the oil supply nipple 101, and a lower side of the compression spring 109 contacts and presses the oil filter 108.
In order to realize the limit control of the plunger 107, a groove is arranged at the upper end of the plunger 107, a clamping ring 112 is arranged in the groove, a limit sleeve 110 is arranged in the clamping ring 112, an opening door spring 111 is arranged between the limit sleeve 110 and the opening door liner 106, and the plunger 107 can realize the movement reset along the axial direction thereof under the action of the opening door spring 111.
In this application, a step is provided in the housing 102, and the opening door bushing 106 is mounted on the step and is pressed by a compression spring 109 pressing an oil filter 108, thereby achieving fixation in the housing 102. In addition, a sealing ring 113 is arranged between the opening door liner 106 and the shell 102, so that the upstream and the downstream of the opening door liner 106 are sealed.
In an embodiment of the present application, the plurality of oil leakage holes formed in the opening door liner 106 are uniformly distributed along the circumferential direction thereof.
In the application, the lower end of the plunger 106 is provided with a conical sealing surface, the corresponding position of the shell 102 is provided with a smooth chamfer, and tight sealing is realized through tight fit of the chamfer and the conical sealing surface.
The working principle of the application is as follows: when the nozzle is operated, fuel flows in from the fuel supply nozzle 101, is filtered by the oil filter 108, and then passes through the oil leakage hole 114 of the gate bush 106, and then applies pressure to the plunger 107. When the pressure reaches a certain level, the plunger 107 moves downwards, the oil supply pressure is increased, the moving distance of the plunger 107 is increased, after the plunger 107 moves to a certain distance, the valve structure is opened, the fuel flows out through a conical surface gap formed between the plunger 107 and the opening door liner 106, finally enters the auxiliary nozzle and is finally sprayed out in a better atomization mode. When the test is finished, the pressure of the fuel flowing from the fuel supply nozzle 101 is reduced, the plunger 107 returns to the initial position by the opening valve spring 111, and the tapered sealing portion thereof comes into close contact with the opening valve liner 106 again, thereby sealing the fuel upstream of the opening valve structure.
The utility model provides an auxiliary fuel way fuel nozzle valve structure can just can obtain better atomization performance at auxiliary nozzle at the time of the beginning work, and the oil that sets up in the valve strains the impurity that can filter in the fuel oil system, avoids the impurity accumulation in the fuel oil system on the fuel oil runner, prevents in addition that ignition, combustion test or engine test from ending the time, and the fuel oil leaks and gets into the combustion chamber.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a vice oil circuit fuel nozzle valve structure which characterized in that, valve structure includes:
an oil supply nipple;
a secondary nozzle interface;
the shell is arranged between the oil supply connector and the auxiliary nozzle interface, and a cavity is formed in the shell;
the opening door lining is fixedly arranged in the containing cavity, and a plurality of oil leakage holes communicated with the oil supply connector and the auxiliary nozzle connector are formed in the opening door lining;
a plunger penetrating the opening door liner and movable relative to the opening door liner, the plunger being supported on the opening door liner by an opening spring; and
the oil filter is arranged on one side, opposite to a fuel inlet, of the opening door liner, covers the oil leakage hole and is used for filtering fuel entering from the fuel supply connector;
the plunger is provided with a conical sealing surface, the opening door liner is provided with a conical chamfer matched with the conical sealing surface, when fuel flowing in from the fuel supply connector reaches a preset pressure, the fuel pushes the plunger to move through the oil leakage hole and flows out from the auxiliary nozzle port, and when the fuel flowing in from the fuel supply connector does not reach the preset pressure, the fuel is stored on one side of the fuel supply connector of the opening door liner.
2. The secondary fuel line nozzle flapper construction of claim 1 wherein said housing is removably connected to said fuel supply nipple; the shell is fixedly connected with the auxiliary nozzle interface.
3. The secondary fuel line nozzle flapper structure of claim 1 wherein the secondary nozzle port includes an external nut and a tapered nipple for connection with the secondary nozzle, the external nut and tapered nipple being fixedly connected integrally with the housing.
4. The secondary fuel line fuel nozzle flapper construction of claim 1 wherein a gasket is disposed between said housing and said fuel supply nipple for effecting a seal between said housing and said fuel supply nipple.
5. The secondary fuel line fuel nozzle flapper construction of claim 1 wherein the fuel filter is captured between the fuel nipple and the opening door liner by a compression spring.
6. The secondary fuel line nozzle shutter arrangement as claimed in claim 1, wherein the end of said plunger is fitted with a stop collar through a collar, and said opening spring is disposed between the stop collar and the opening door liner.
7. The secondary fuel line nozzle gate structure of claim 1, wherein a plurality of said oil leak holes are circumferentially spaced about an axis for opening the gate liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125826.2A CN112254169A (en) | 2020-10-20 | 2020-10-20 | Sealing structure of secondary oil way fuel nozzle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125826.2A CN112254169A (en) | 2020-10-20 | 2020-10-20 | Sealing structure of secondary oil way fuel nozzle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112254169A true CN112254169A (en) | 2021-01-22 |
Family
ID=74244121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011125826.2A Pending CN112254169A (en) | 2020-10-20 | 2020-10-20 | Sealing structure of secondary oil way fuel nozzle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112254169A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775118A (en) * | 2021-01-29 | 2021-05-11 | 安徽应流航空科技有限公司 | Automatic fuel pipeline air blowing valve |
| CN117738797A (en) * | 2024-02-21 | 2024-03-22 | 中国航发四川燃气涡轮研究院 | Main oil way valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3339574A (en) * | 1964-05-29 | 1967-09-05 | Gen Electric | Pressurizing and drain valve |
| GB1329350A (en) * | 1971-01-25 | 1973-09-05 | Parker Hannifin Corp | Flow control or metering valves |
| CN106762156A (en) * | 2016-12-21 | 2017-05-31 | 长春航空液压控制有限公司 | Engine fuel turns off valve assembly |
| CN206269171U (en) * | 2016-09-30 | 2017-06-20 | 中国南方航空工业(集团)有限公司 | Automatic open-close type oil leak valve |
| CN206987968U (en) * | 2017-05-28 | 2018-02-09 | 西安成立航空制造有限公司 | A kind of aero-engine fuel nozzle pre-combustion grade auxiliary oil circuit valve |
| CN206987967U (en) * | 2017-05-28 | 2018-02-09 | 西安成立航空制造有限公司 | A kind of aero-engine fuel nozzle main combustion stage working connection valve |
| CN108035806A (en) * | 2017-11-08 | 2018-05-15 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of parking jettison gear of aero-engine fuel dispenser |
| CN111780162A (en) * | 2020-07-08 | 2020-10-16 | 成都航利航空科技有限责任公司 | Binary channels fuel nozzle of adjustable valve |
-
2020
- 2020-10-20 CN CN202011125826.2A patent/CN112254169A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3339574A (en) * | 1964-05-29 | 1967-09-05 | Gen Electric | Pressurizing and drain valve |
| GB1329350A (en) * | 1971-01-25 | 1973-09-05 | Parker Hannifin Corp | Flow control or metering valves |
| JPS5777771U (en) * | 1971-01-25 | 1982-05-13 | ||
| CN206269171U (en) * | 2016-09-30 | 2017-06-20 | 中国南方航空工业(集团)有限公司 | Automatic open-close type oil leak valve |
| CN106762156A (en) * | 2016-12-21 | 2017-05-31 | 长春航空液压控制有限公司 | Engine fuel turns off valve assembly |
| CN206987968U (en) * | 2017-05-28 | 2018-02-09 | 西安成立航空制造有限公司 | A kind of aero-engine fuel nozzle pre-combustion grade auxiliary oil circuit valve |
| CN206987967U (en) * | 2017-05-28 | 2018-02-09 | 西安成立航空制造有限公司 | A kind of aero-engine fuel nozzle main combustion stage working connection valve |
| CN108035806A (en) * | 2017-11-08 | 2018-05-15 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of parking jettison gear of aero-engine fuel dispenser |
| CN111780162A (en) * | 2020-07-08 | 2020-10-16 | 成都航利航空科技有限责任公司 | Binary channels fuel nozzle of adjustable valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775118A (en) * | 2021-01-29 | 2021-05-11 | 安徽应流航空科技有限公司 | Automatic fuel pipeline air blowing valve |
| CN117738797A (en) * | 2024-02-21 | 2024-03-22 | 中国航发四川燃气涡轮研究院 | Main oil way valve |
| CN117738797B (en) * | 2024-02-21 | 2024-04-16 | 中国航发四川燃气涡轮研究院 | Main oil way valve |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Mo Da Inventor after: Liu Yongquan Inventor after: Liang Caiyun Inventor after: Zhu Jian Inventor before: Mo Da Inventor before: Zhang Chengkai |
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| CB03 | Change of inventor or designer information |