CN109667671B - Gas turbine lubricating oil system voltage stabilizing regulator - Google Patents
Gas turbine lubricating oil system voltage stabilizing regulator Download PDFInfo
- Publication number
- CN109667671B CN109667671B CN201910101128.XA CN201910101128A CN109667671B CN 109667671 B CN109667671 B CN 109667671B CN 201910101128 A CN201910101128 A CN 201910101128A CN 109667671 B CN109667671 B CN 109667671B
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity
- shell
- lubricating oil
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
Abstract
A gas turbine lubricating oil system pressure stabilizing regulator comprises a sealed shell, wherein an inner cavity of the shell is partitioned into a lubricating oil separation cavity and a low-pressure compressor air cavity, and a valve is arranged between the two cavities; an oil-gas mixture interface and a first joint are arranged on the shell corresponding to the cavity of the lubricating oil separation cavity, and a low-pressure compressor air interface and a second joint are arranged on the shell corresponding to the air cavity of the low-pressure compressor; a hollow valve rod is arranged in a cavity of the lubricating oil separation cavity, the end part of the valve rod is in clearance fit with the valve, the oil-gas mixture is discharged to the static oil-gas separator through a channel at the hollow part of the valve rod, and when redundant gas exists in the oil-gas mixture, the oil-gas mixture is discharged through a bypass hole in the valve rod; the gap between the end part of the valve rod and the valve is adjustable, two sides of the valve are respectively supported by a lubricating oil separation cavity spring and a compressor air cavity spring in a relative mode, and the other ends of the lubricating oil separation cavity spring and the compressor air cavity spring are respectively tightly propped against the inner wall of the shell. The invention has the advantages of reliable and simple structure and convenient adjustment.
Description
Technical Field
The invention relates to the field of operation control of gas turbines, in particular to a pressure stabilizing regulator of a gas turbine lubricating oil system.
Background
The lubricating oil system is an important component of the gas turbine and is used for providing lubricating oil required by the gas turbine to realize lubrication, cooling, regulation and the like in the operation process. When the gas turbine normally works, lubricating oil needs to be supplied to the surfaces of a bearing, a gear and the like to form a continuous oil film so as to take away heat transmitted by friction and high-temperature parts, maintain the parts to work in a normal range, prolong the service life of the parts, and simultaneously, the lubricating oil with certain pressure is also used for supplying the oil to a hydraulic adjusting mechanism of the gas turbine.
However, in the circulation process of the gas turbine lubricating oil system, bubbles are generated due to the fact that the temperature of the lubricating oil is too high, and if the bubbles cannot be discharged in time, the pressure of a lubricating oil separation tank is large, so that the gas turbine is unstable in operation, and the service life of the gas turbine is shortened.
Disclosure of Invention
The present invention is directed to solve the above problems in the prior art, and an object of the present invention is to provide a pressure stabilizing regulator for a gas turbine oil system, which uses static pressure of a low-pressure compressor as a contrast pressure, and changes the pressure in an oil separation tank according to the difference between the pressure and the air pressure in a static oil-gas separator, thereby preventing the pressure in the oil separation tank from being too high.
In order to achieve the purpose, the invention adopts the technical scheme that:
the device comprises a sealed shell, wherein an inner cavity of the shell is partitioned into a lubricating oil separation cavity and a low-pressure compressor air cavity, and a valve is arranged between the two cavities; an oil-gas mixture interface and a first joint are arranged on the shell corresponding to the cavity of the lubricating oil separation cavity, and a low-pressure compressor air interface and a second joint are arranged on the shell corresponding to the air cavity of the low-pressure compressor; a hollow valve rod is arranged in the cavity of the lubricating oil separation cavity, the end part of the valve rod is in clearance fit with the valve, the oil-gas mixture is discharged to the static oil-gas separator through a channel at the hollow part of the valve rod, and when redundant gas exists in the oil-gas mixture, the oil-gas mixture can be discharged through a bypass hole in the valve rod; the gap between the end part of the valve rod and the valve is adjustable, two sides of the valve are respectively supported by a lubricating oil separation cavity spring and a compressor air cavity spring in a relative mode, and the other ends of the lubricating oil separation cavity spring and the compressor air cavity spring are respectively tightly propped against the inner wall of the shell.
The hollow cylindrical body is sleeved outside the valve rod, one end of the hollow cylindrical body is connected to the movable part in the inner cavity of the shell, and the inner cavity of the shell is partitioned into a lubricating oil separation cavity and a low-pressure compressor air cavity through the hollow cylindrical body and a valve connected to the end part.
The hollow cylindrical body is made of stainless steel materials, and the hollow cylindrical body and the valve are welded together.
The air cavity of the low-pressure compressor is enclosed by a diaphragm capsule coated outside the hollow cylindrical body.
The bellows is a bellows which can move radially with the hollow column, the valve and the movable part of the shell.
An air cavity of the low-pressure compressor is provided with a flange corresponding to one end of the shell, an air interface of the low-pressure compressor is arranged on the flange, an adjusting screw is arranged in the middle of the flange, and one end of an air cavity spring of the compressor is connected with the adjusting screw.
And a filter protective cap is arranged at one end of the first connector, the second connector and the valve rod which are communicated with the static oil-gas separator.
The valve rod is installed on the shell through a nut, and a gap between the end part of the valve rod and the valve is adjusted through the nut.
The pipe diameter of the second joint is larger than 10mm, and a pipe joint with the model of AC11-0265 can be selected.
The pipe diameter of the first joint is larger than 10mm, and a pipe joint with the model number of AC11-0384 can be selected.
Compared with the prior art, the invention has the following beneficial effects: two sides of the valve are respectively and oppositely supported by a lubricating oil separation cavity spring and a compressor air cavity spring, a pressure threshold value needing to be exhausted is set by the spring elasticity of the two sides of the valve, air is filled into the low-pressure compressor air cavity through a low-pressure compressor air interface, an oil-gas mixture is filled into the lubricating oil separation cavity through an oil-gas mixture interface, and the oil-gas mixture is exhausted to the static oil-gas separator through a channel at the hollow part of the valve rod. When the pressure of oil gas in the oil-gas separation box rises, the gap between the end part of the valve rod and the valve is increased, and redundant gas in the oil-gas mixture is discharged through the bypass hole, so that the pressure in the cavity of the oil-gas separation cavity is reduced. When the pressure of oil gas of the oil-oil separation box is reduced, the gap between the end part of the valve rod and the valve is reduced, the pressure in the cavity of the oil-oil separation cavity is increased, and the initial gap between the end part of the valve rod and the valve can be adjusted and set. The invention adopts the static pressure of the low-pressure compressor as the contrast pressure, and changes the clearance according to the difference between the static pressure and the air pressure in the static oil-gas separator, thereby changing the pressure of the lubricating oil separation tank.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the drawings: 1-a flange; 2-a first joint protection cap; 3-valve stem protective cap; 4-a lubricant separation chamber spring; 5-valve stem; 6-a second joint protection cap; 7-first flange set screws; 8-second flange fixing screws; 9-a housing; 9.1-upper right end shell; 9.2-right lower end shell; 9.3-left upper shell; 9.4-left lower shell; 10-a capsule; 11-a valve; 12-compressor air chamber spring; 19-hollow cylinder; 20-adjusting screws; 29-a nut; 66-a second joint; 68-a first joint; a-adjusting the distance by a screw; l-valve rod adjusting distance; c, introducing air of the low-pressure compressor; d-oil-gas mixture from the lubricating oil separation tank; g-lubricating oil separation cavity; f-air cavity of low-pressure compressor; e-introducing the oil-gas mixture into the static oil-gas separator.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the gas turbine oil system pressure regulator of the present invention fixes a flange 1 and a casing 9 together by a first flange fixing screw 7 and a second flange fixing screw 8. The left end of the bellows 10 and the left upper end housing 9.3 and the left lower end housing 9.4 are welded together, the right end of the bellows 10 and the right upper end housing 9.1 and the right lower end housing 9.2 are welded together, and the valve 11 and the hollow cylinder 19 are welded together. The left end of the compressor air cavity spring 12 is jacked into the valve 11, the right end of the compressor air cavity spring is jacked into the adjusting screw 20, the left end of the lubricating oil separation cavity spring 4 is jacked into the left upper end shell 9.3 and the left lower end shell 9.4, and the right end of the lubricating oil separation cavity spring 4 is jacked into the valve 11. The valve stem 5 penetrates and bears against the valve 11 through a hole in the left end of the housing 9 and is fixed externally by means of a fixing nut 29. The first connector protecting cap 2 is mounted on the first connector 68, the valve stem protecting cap 3 is mounted on the top end of the valve stem 5, and the second connector protecting cap 6 is mounted on the second connector 66, all of which are used to prevent dirt from entering the housing 9. The left ends of the left lower end shell 9.4 and the left upper end shell 9.3 are provided with a hole, an oil-gas mixture D from the lubricating oil separating box is led into a lubricating oil separating cavity G, the lubricating oil separating cavity G is formed outside the shell 9 and the diaphragm box 10, and a low-pressure compressor air cavity F is formed inside the diaphragm box 10 and the shell 9.
The working principle of the invention is as follows:
the static pressure difference between the air C introduced into the low-pressure air compressor and the pressure difference between the air C introduced into the static oil-gas separator can be kept stable through the static pressure maintaining device. Air C introduced into the low-pressure compressor is filled into the air cavity F of the low-pressure compressor through a second connector 66, and an oil-gas mixture in the oil-gas separator is supplied into the cavity of the lubricating oil separation cavity through a first connector 68 and is discharged to the static oil-gas separator through a valve rod channel. When the pressure of the oil-gas mixture D from the oil-gas separation box rises, the valve 11 moves rightwards, the gap B between the end part of the valve rod and the valve is increased, the oil-gas mixture D from the oil-gas separation box is discharged from the bypass hole of the valve rod 5, and the pressure of the cavity G of the oil-gas separation cavity is reduced. When the oil-gas mixture D from the oil separation tank is lowered, the valve 11 moves to the left, and the gap B between the end of the valve stem and the valve decreases, which results in an increase in the pressure of the oil separation chamber body G. The adjustment of the pressure in the oil separator is carried out by changing the clearance B between the oil separator and the valve 11 by adjusting the nut 25.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A gas turbine lubricating oil system steady voltage regulator which characterized in that: the device comprises a sealed shell (9), wherein an inner cavity of the shell (9) is partitioned into a lubricating oil separation cavity (G) and a low-pressure compressor air cavity (F), and a valve (11) is arranged between the two cavities; an oil-gas mixture interface and a first joint (68) are arranged on the shell (9) corresponding to the cavity (G) of the lubricating oil separation cavity, and a low-pressure compressor air interface and a second joint (66) are arranged on the shell (9) corresponding to the air cavity (F) of the low-pressure compressor; a hollow valve rod (5) is arranged in a cavity (G) of the lubricating oil separation cavity, the end part of the valve rod (5) is in clearance fit with a valve (11), oil-gas mixture is discharged to the static oil-gas separator through a channel at the hollow part of the valve rod (5), and when redundant gas exists in the oil-gas mixture, the oil-gas mixture can be discharged to the static oil-gas separator through the channel at the hollow part of the valve rod (5); the clearance between the end part of the valve rod (5) and the valve (11) is adjustable, two sides of the valve (11) are respectively supported by a lubricating oil separation cavity spring (4) and a compressor air cavity spring (12) in a relative mode, and the other ends of the lubricating oil separation cavity spring (4) and the compressor air cavity spring (12) are respectively tightly propped against the inner wall of the shell.
2. The gas turbine oil system pressure regulator of claim 1, wherein: the valve rod (5) is externally sleeved with a hollow cylindrical body (19), one end of the hollow cylindrical body (19) is connected to a movable part in the inner cavity of the shell (9), the valve (11) is arranged at the other end of the hollow cylindrical body (19), and the inner cavity of the shell (9) is partitioned into a lubricating oil separation cavity (G) and a low-pressure compressor air cavity (F) through the hollow cylindrical body (19) and the valve (11) connected to the end part.
3. The gas turbine oil system pressure regulator of claim 2, wherein: the hollow cylindrical body (19) is made of stainless steel materials, and the hollow cylindrical body (19) and the valve (11) are welded together.
4. The gas turbine oil system pressure regulator of claim 2, wherein: the air cavity (F) of the low-pressure compressor is enclosed by a diaphragm capsule (10) coated outside the hollow cylindrical body (19).
5. The gas turbine oil system pressure regulator of claim 4, wherein: the bellows (10) adopts bellows which can move along with the hollow cylindrical body (19), the valve (11) and the movable part of the shell (9) in the radial direction.
6. The gas turbine oil system pressure regulator of claim 2, wherein: an air cavity (F) of the low-pressure compressor corresponds to one end of the mounting flange (1) of the shell (9), an air interface of the low-pressure compressor is arranged on the flange (1), an adjusting screw (20) is mounted in the middle of the flange (1), and one end of an air cavity spring (12) of the compressor is connected with the adjusting screw (20).
7. The gas turbine oil system pressure regulator of claim 1, wherein: and a filter protective cap is arranged at one end of the first joint (68), the second joint (66) and the valve rod (5) which are communicated with the static oil-gas separator.
8. The gas turbine oil system pressure regulator of claim 1, wherein: the valve rod (5) is installed on the shell (9) through a nut (29), and the gap between the end part of the valve rod (5) and the valve (11) is adjusted through the nut (29).
9. The gas turbine oil system pressure regulator of claim 1, wherein: the pipe diameter of the second joint (66) is more than 10 mm.
10. The gas turbine oil system pressure regulator of claim 1, wherein: the pipe diameter of the first joint (68) is >10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101128.XA CN109667671B (en) | 2019-01-31 | 2019-01-31 | Gas turbine lubricating oil system voltage stabilizing regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101128.XA CN109667671B (en) | 2019-01-31 | 2019-01-31 | Gas turbine lubricating oil system voltage stabilizing regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109667671A CN109667671A (en) | 2019-04-23 |
| CN109667671B true CN109667671B (en) | 2021-07-13 |
Family
ID=66150310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910101128.XA Active CN109667671B (en) | 2019-01-31 | 2019-01-31 | Gas turbine lubricating oil system voltage stabilizing regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109667671B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131044B (en) * | 2019-05-31 | 2020-09-01 | 中国航发南方工业有限公司 | Air pressure regulating device and air pressure regulating method for preventing high-temperature gas from flowing backwards |
| CN113107682A (en) * | 2021-04-27 | 2021-07-13 | 中国航发沈阳发动机研究所 | Low-resistance air pressure altitude valve for aero-engine lubricating oil system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2121072C1 (en) * | 1997-02-24 | 1998-10-27 | Громыко Петр Семенович | Differential pressure regulator of internal combustion engine fuel feed system |
| CN204357528U (en) * | 2014-12-17 | 2015-05-27 | 中国南方航空工业(集团)有限公司 | Gas and oil separating plant and there is the oil cooling system of this device |
| CN107435590A (en) * | 2016-05-26 | 2017-12-05 | 中国航发商用航空发动机有限责任公司 | Gas and oil separating plant and gas-turbine unit |
| CN108506706A (en) * | 2018-05-24 | 2018-09-07 | 宣化钢铁集团有限责任公司 | A kind of adjustable multichannel oil-gas mixer of oil mass tolerance |
-
2019
- 2019-01-31 CN CN201910101128.XA patent/CN109667671B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2121072C1 (en) * | 1997-02-24 | 1998-10-27 | Громыко Петр Семенович | Differential pressure regulator of internal combustion engine fuel feed system |
| CN204357528U (en) * | 2014-12-17 | 2015-05-27 | 中国南方航空工业(集团)有限公司 | Gas and oil separating plant and there is the oil cooling system of this device |
| CN107435590A (en) * | 2016-05-26 | 2017-12-05 | 中国航发商用航空发动机有限责任公司 | Gas and oil separating plant and gas-turbine unit |
| CN108506706A (en) * | 2018-05-24 | 2018-09-07 | 宣化钢铁集团有限责任公司 | A kind of adjustable multichannel oil-gas mixer of oil mass tolerance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109667671A (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109667671B (en) | Gas turbine lubricating oil system voltage stabilizing regulator | |
| RU2672148C2 (en) | Radial-bearing assembly, turbomachine and method said radial-bearing assembly | |
| CN107387772B (en) | Compact ultra-high-speed high-temperature-resistant mechanical sealing device | |
| EA012386B1 (en) | Device for hydrolically protecting a well pump electric motor | |
| CA3003802A1 (en) | Damped relief valve using double pistons | |
| US11333251B2 (en) | Hydraulically controllable mechanical seal | |
| JPS6239309B2 (en) | ||
| US20040020536A1 (en) | The way of replacement of main seals in a ball valve and a ball valve | |
| CN105485006B (en) | A kind of helical-lobe compressor | |
| CN109237190B (en) | External pipeline connecting structure of engine with vibration reduction function | |
| CN116464730A (en) | Closed rotary swing vane throttle hole type heat balance hydraulic damper | |
| CN210400854U (en) | Buoyancy type thrust adapter | |
| CN207333862U (en) | A kind of gas stabilized-pressure valve applied on gas instantaneous water heater water vapor linked valve | |
| JPH0739805B2 (en) | Turbine seal clearance adjustment device | |
| US2705021A (en) | Liquid filled bellows differential pressure instrument | |
| CN212616283U (en) | External cooling type sealing box structure | |
| JP2003502601A (en) | Hydraulic accumulators, especially hydraulic dampers | |
| CN105909933A (en) | Supporting device with multi-freedom-degree adjustment function | |
| RU2646985C1 (en) | Node for hydraulic protection of the submersible oil-completed electric motor (options) | |
| CN206988496U (en) | A kind of air compressor minimum pressure valve | |
| WO2020160105A1 (en) | Lead-lag damper | |
| CN104235052A (en) | Novel pressure stabilization device for double-end surface sealing of turbine pump | |
| CN116677496B (en) | Automatic bleed air mechanism and compressor through pressure adjustment | |
| CN111561580A (en) | Axial flow control valve | |
| CN109899579B (en) | Supporting device for fast reactor sodium valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |