CN114198557A - Be applied to gas turbine's bleed valve - Google Patents
Be applied to gas turbine's bleed valve Download PDFInfo
- Publication number
- CN114198557A CN114198557A CN202111520015.7A CN202111520015A CN114198557A CN 114198557 A CN114198557 A CN 114198557A CN 202111520015 A CN202111520015 A CN 202111520015A CN 114198557 A CN114198557 A CN 114198557A
- Authority
- CN
- China
- Prior art keywords
- valve
- gas turbine
- piston
- air
- valve body
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides the air release valve applied to the gas turbine, which improves the operation reliability of the air release valve and solves the problem of frequent clamping stagnation faults of the air release valve of the gas turbine. The invention provides a gas turbine applied bleed valve, which comprises a nut, a gasket, a piston, a sealing ring, a valve body, a pipe joint, a stop washer, a round nut, a sealing element, a screw, a cover, a bushing, a valve disc, a spring and the like. When the gas turbine needs to be deflated in the operation process, the control gas enters the deflation valve control cavity to push the piston to move along the inner wall of the valve body, and then the valve disc is driven to open the deflation channel of the gas turbine. When the air does not need to be discharged, the control cavity of the air discharge valve discharges control air, the piston moves along the inner wall of the valve body under the action of the spring, and the air discharge channel of the gas turbine is closed. The invention reduces the fault occurrence probability on the premise of ensuring the sealing performance and improves the operation reliability of the gas turbine.
Description
Technical Field
The invention relates to a gas turbine pneumatic control system accessory used in the ship industry, belonging to the energy and power industry, in particular to a deflation valve sealed by an elastic sealing element.
Background
The pneumatic control system of the marine gas turbine is a gas turbine control system which is used for controlling the functions of a deflation valve, an oil circuit purging and the like by providing compressed air which is provided on a machine, is previously cleaned of mechanical impurities, is dried, dehumidified and decompressed to a required pressure and is from an air source on a ship. The main functions of the pneumatic control system are to supply air to the fuel pipe and the air release valve control cavity on the engine during the starting process, the low working condition operation process and the shutdown process of the gas turbine so as to realize the functions of atomizing fuel, improving the combustion effect, improving the surge margin of the gas turbine and the like. When the condition of insufficient surge margin occurs in the operation process of the gas turbine, the interstage bleed of the gas compressor is an effective anti-surge measure, so that a gas collecting cavity is required to be arranged on the gas turbine, a bleed valve capable of running reliably is arranged on the gas collecting cavity, the interstage bleed of the gas compressor is carried out, and if the bleed valve cannot be opened normally due to faults such as clamping stagnation, the gas turbine is forbidden to work, so that the surge accident of the gas turbine is avoided.
Disclosure of Invention
The invention provides a gas release valve applied to a gas turbine, which has the advantages of quick opening, high reliability and convenience in repair and maintenance.
The purpose of the invention is realized as follows: including the valve body, with the lid that the valve body is connected, set up the piston in the valve body, its characterized in that: the piston is provided with a mounting groove, an elastic sealing element is arranged in the mounting groove, the circumferential surface of the valve body is provided with a pipe joint, the end part of the piston extends out of the valve body, a valve disc is arranged on the end part of the piston, and a spring for returning the piston is arranged in the cover; when control gas enters the control cavity through the pipe joint, the elastic sealing element is stressed to expand, so that a gap between the piston and the valve body is fully sealed, and the reliability of the sealing structure is ensured; and when the control gas is discharged through the pipe joint, the elastic sealing element is restored to the original state, and the smoothness of the return process of the piston is ensured.
Furthermore, the elastic sealing element is made of polytetrafluoroethylene materials capable of bearing more than 300 ℃, so that the air release valve can normally work at a certain temperature, and meanwhile, the self-lubricating air release valve has self-lubricating property, and the risk of jamming of the air release valve is reduced.
Further, there is certain clearance between piston external diameter and the valve body internal diameter, reduces the risk of piston and valve body contact bite.
Further, a bushing is arranged between the valve disc and the piston, the end portion of the bushing is fixed through a nut and a gasket, and a sealing ring is arranged between the bushing and the butterfly valve.
Furthermore, when the surge margin is improved by air discharge in the operation process of the gas turbine, control air controlled by the electromagnetic valve enters the air discharge valve control cavity through the pipe joint, the control air pushes the piston to move along the inner wall of the valve body, and then the valve disc is driven to open the air discharge channel of the gas turbine, and air is discharged through the gas collection cavity of the gas turbine, so that the purpose of improving the surge margin is achieved; when the air does not need to be discharged, the electromagnetic valve sends out an instruction, the control air in the control cavity of the air discharge valve is discharged through the pipe joint, and the piston moves along the inner wall of the valve body under the action of the spring and returns to the closing position of the air discharge valve.
Compared with the prior art, the invention has the beneficial effects that: the invention ensures that the air release valve can be opened quickly and reliably, reduces the requirement on the sealing size between the air release valve and the valve body, improves the reliability and is convenient to repair and maintain. An elastic sealing element is adopted for sealing, when control gas enters a control cavity, the sealing element is stressed to expand, a gap between the piston and the valve body is fully sealed, and the sealing effect is ensured; and the sealing element is restored to the original state when the control gas is discharged, so that the piston is ensured to return smoothly. The elastic sealing element is adopted to ensure the reliability of the sealing structure, the sealing performance is ensured without adopting the modes of overlaying bronze or coating molybdenum disulfide lubricating grease and the like, and a certain gap exists between the outer diameter of the piston and the inner diameter of the valve body, so that the risk of contact jamming is reduced. The invention is a deflation valve sealed by an elastic sealing element, can be opened quickly, has high reliability and is convenient to repair and maintain. Through adopting novel elastic component seal structure, avoided build-up welding bronze and scribble the risk of bleed valve jamming after long-time operation that sealing methods such as lubricating grease probably brought, simple structure is convenient for maintain and change trouble piece.
Drawings
FIG. 1 is a view of the structure of a purge valve sealed by an elastomeric seal;
fig. 2 is an enlarged view of the seal structure.
In the figure: 1-a nut; 2. 7-a gasket; 3-a piston; 4. 14-a sealing ring; 5-a valve body; 6-pipe joint; 8-a stop washer; 9-round nuts; 10-a seal; 11-a screw; 12-a cover; 13-a bushing; 15-valve disc; 16-spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the air release valve sealed by the elastic sealing element is composed of a nut 1, gaskets 2 and 7, a piston 3, sealing rings 4 and 14, a valve body 5, a pipe joint 6, a stop washer 8, a round nut 9, a sealing element 10, a screw 11, a cover 12, a lining 13, a valve disc 15 and a spring 16.
When the surge margin needs to be improved by air bleeding in the operation process of the gas turbine, control air controlled by an electromagnetic valve enters a bleed valve control cavity sealed by an elastic sealing element through a pipe joint 6, the control air pushes a piston 3 to move along the inner wall of a valve body 5, and then a valve disc 15 is driven to open a bleed passage of the gas turbine, and air is discharged through a gas collecting cavity of the gas turbine, so that the purpose of improving the surge margin is achieved. When the air bleeding is not needed, the electromagnetic valve sends out a command, the control air in the air bleeding valve control cavity sealed by the elastic sealing element is exhausted through the pipe joint 6, the piston 3 moves along the inner wall of the valve body 5 under the action of the spring 16 until the initial position is recovered, and the air bleeding channel of the gas turbine is closed.
By adopting an elastic sealing structure, when control gas enters the control cavity through the pipe joint 6, the sealing element 10 is stressed to expand, so that a gap between the piston 3 and the valve body 5 is fully sealed, and the reliability of the sealing structure is ensured; when the control gas is discharged through the pipe joint 6, the sealing element 10 is restored to the original state, and the smoothness of the return process of the piston 3 is ensured.
The elastic sealing element 10 is made of polytetrafluoroethylene materials capable of bearing more than 300 ℃, and has self-lubricating property when the air release valve can normally work at a certain temperature, so that the risk of jamming of the air release valve is reduced.
The piston 3 does not need to adopt the modes of overlaying bronze or coating molybdenum disulfide lubricating grease and the like to ensure the sealing property, and a certain gap exists between the outer diameter of the piston 3 and the inner diameter of the valve body 5, so that the risk of contact jamming of the piston 3 and the valve body 5 is reduced.
In conclusion, the invention is the air release valve applied to the gas turbine, improves the operation reliability of the air release valve and solves the problem of frequent clamping stagnation faults of the air release valve of the gas turbine. The invention provides a gas turbine applied bleed valve, which comprises a nut, a gasket, a piston, a sealing ring, a valve body, a pipe joint, a stop washer, a round nut, a sealing element, a screw, a cover, a bushing, a valve disc, a spring and the like. When the gas turbine needs to be deflated in the operation process, the control gas enters the deflation valve control cavity to push the piston to move along the inner wall of the valve body, and then the valve disc is driven to open the deflation channel of the gas turbine. When the air does not need to be discharged, the control cavity of the air discharge valve discharges control air, the piston moves along the inner wall of the valve body under the action of the spring, and the air discharge channel of the gas turbine is closed. The invention reduces the fault occurrence probability on the premise of ensuring the sealing performance and improves the operation reliability of the gas turbine.
Claims (5)
1. The utility model provides a be applied to gas turbine's bleed valve, includes the valve body, with the lid that the valve body is connected, set up the piston in the valve body, its characterized in that: the piston is provided with a mounting groove, an elastic sealing element is arranged in the mounting groove, the circumferential surface of the valve body is provided with a pipe joint, the end part of the piston extends out of the valve body, a valve disc is arranged on the end part of the piston, and a spring for returning the piston is arranged in the cover; when control gas enters the control cavity through the pipe joint, the elastic sealing element is stressed to expand, so that a gap between the piston and the valve body is fully sealed, and the reliability of the sealing structure is ensured; and when the control gas is discharged through the pipe joint, the elastic sealing element is restored to the original state, and the smoothness of the return process of the piston is ensured.
2. A bleed valve for a gas turbine engine according to claim 1, characterised in that: the elastic sealing element is made of polytetrafluoroethylene materials capable of bearing more than 300 ℃, and the air release valve has self-lubricating property and reduces the risk of jamming of the air release valve while the air release valve can normally work at a certain temperature.
3. A bleed valve for a gas turbine engine according to claim 1, characterised in that: there is certain clearance between piston external diameter and the valve body internal diameter, reduces the risk of piston and valve body contact bite.
4. A bleed valve for a gas turbine engine according to claim 1, characterised in that: a bushing is arranged between the valve disc and the piston, the end part of the bushing is fixed with a gasket through a nut, and a sealing ring is arranged between the bushing and the butterfly valve.
5. The bleed valve for a gas turbine according to any one of claims 1 to 4, wherein: when the surge margin is improved by air discharge in the operation process of the gas turbine, control air controlled by the electromagnetic valve enters the air discharge valve control cavity through the pipe joint, the control air pushes the piston to move along the inner wall of the valve body, and then the valve disc is driven to open the air discharge channel of the gas turbine, and air is discharged through the gas collection cavity of the gas turbine, so that the purpose of improving the surge margin is achieved; when the air does not need to be discharged, the electromagnetic valve sends out an instruction, the control air in the control cavity of the air discharge valve is discharged through the pipe joint, and the piston moves along the inner wall of the valve body under the action of the spring and returns to the closing position of the air discharge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111520015.7A CN114198557A (en) | 2021-12-13 | 2021-12-13 | Be applied to gas turbine's bleed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111520015.7A CN114198557A (en) | 2021-12-13 | 2021-12-13 | Be applied to gas turbine's bleed valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198557A true CN114198557A (en) | 2022-03-18 |
Family
ID=80653133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111520015.7A Pending CN114198557A (en) | 2021-12-13 | 2021-12-13 | Be applied to gas turbine's bleed valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114198557A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2229352A1 (en) * | 1998-02-13 | 1999-08-13 | Pratt & Whitney Canada Inc. | Compressor bleed valve |
| US20020189263A1 (en) * | 2001-06-13 | 2002-12-19 | Rayer Quintin G. | Bleed valve assembly |
| CN2846908Y (en) * | 2005-08-18 | 2006-12-13 | 李汉宝 | A Piston Electrohydraulic Valve Applicable to Digital Control |
| CN204783279U (en) * | 2015-07-10 | 2015-11-18 | 中国航空工业集团公司沈阳发动机设计研究所 | Pneumatic control bleed valve and have its compressor system and aircraft |
| CN205841780U (en) * | 2016-06-24 | 2016-12-28 | 北京慨尔康科技发展有限公司 | A kind of anti-surge valve and automobile |
| CN112178256A (en) * | 2020-09-29 | 2021-01-05 | 中国航发动力股份有限公司 | Large-size stable-speed anti-surge air release valve |
-
2021
- 2021-12-13 CN CN202111520015.7A patent/CN114198557A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2229352A1 (en) * | 1998-02-13 | 1999-08-13 | Pratt & Whitney Canada Inc. | Compressor bleed valve |
| US20020189263A1 (en) * | 2001-06-13 | 2002-12-19 | Rayer Quintin G. | Bleed valve assembly |
| CN2846908Y (en) * | 2005-08-18 | 2006-12-13 | 李汉宝 | A Piston Electrohydraulic Valve Applicable to Digital Control |
| CN204783279U (en) * | 2015-07-10 | 2015-11-18 | 中国航空工业集团公司沈阳发动机设计研究所 | Pneumatic control bleed valve and have its compressor system and aircraft |
| CN205841780U (en) * | 2016-06-24 | 2016-12-28 | 北京慨尔康科技发展有限公司 | A kind of anti-surge valve and automobile |
| CN112178256A (en) * | 2020-09-29 | 2021-01-05 | 中国航发动力股份有限公司 | Large-size stable-speed anti-surge air release valve |
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