CN108825312A - A kind of turbine high-pressure main steam control valve group - Google Patents
A kind of turbine high-pressure main steam control valve group Download PDFInfo
- Publication number
- CN108825312A CN108825312A CN201810694844.9A CN201810694844A CN108825312A CN 108825312 A CN108825312 A CN 108825312A CN 201810694844 A CN201810694844 A CN 201810694844A CN 108825312 A CN108825312 A CN 108825312A
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- Prior art keywords
- stop valve
- valve
- inner casing
- regulating valve
- stop
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a kind of turbine high-pressure main steam control valve group, stop valve and the structure design that regulating valve is all made of the connection sealing of double Shell, interlayer separates.Internal layer valve casing uses the high low cost materials of higher temperature, and outer layer valve casing uses the lower conventional metal material of price；High-pressure admission pipe connects to use to be threadedly coupled with stop valve outer housing, stop valve outer housing and regulating valve outer housing and put together on together, and high-pressure admission pipe, which connects, to be sealed with stop valve inner housing, stop valve inner casing and regulating valve inner housing using " C " type；The inside and outside crustless sandwich of stop valve and the inside and outside crustless sandwich of regulating valve be divided into two it is different opposite（Inner housing）The steam chambers of low temperature form specific temperature field；And the inside and outside crustless sandwich of stop valve is connected to the inside and outside crustless sandwich of regulating valve.
Description
Technical field
The present invention relates to steam turbine technology fields, more particularly to a kind of turbine high-pressure main steam control valve group.
Background technique
High-pressure main steam regulating valve group is the key that one of steam-turbine plant portion set, and reliability is to unit operational safety to pass
It is important.With the continuous improvement that green low-carbon development and energy resource structure upgrading require, country also adds the steam turbine of more high parameter
Big research dynamics, the crucial portion as steam-turbine plant cover, the material and structure of the high-pressure main steam regulating valve group of ultra-high temperature
It is one of the research emphasis of high-parameter steam turbine.
It is limited since steam turbine main steam condition is improved with the material property of conventional material, using the design wall of single layer valve
It is thick increasingly thicker, on the one hand cause valve group and its accessory structure size design difficult, on the other hand will cause biggish valve heat
Stress influences the safe operation of unit；If manufacturing valve using whole nickel-base high-temperature materials, cost will be greatly improved.Institute
It is those skilled in the art always in the problem of thinking how to solve the above problems.
Summary of the invention
It is an object of the invention to overcome the above-mentioned problems in the prior art, a kind of main vapour tune of turbine high-pressure is proposed
Valve group is saved, stop valve and regulating valve are all made of the structure of the connection sealing of double Shell, interlayer partition.Internal layer valve casing use is higher
The high low cost materials of temperature, outer layer valve casing use the lower conventional metal material of price；High-pressure admission pipe connects and stop valve shell
Body, stop valve outer housing and regulating valve outer housing using the split type structure being threadedly coupled, the inside and outside crustless sandwich of stop valve and
The inside and outside crustless sandwich of regulating valve be divided into two it is different opposite（Inner housing）The steam chambers of low temperature form specific temperature field；
And the inside and outside crustless sandwich of stop valve is connected to the inside and outside crustless sandwich of regulating valve.
The purpose of the present invention is realized by following technical proposals：
A kind of turbine high-pressure main steam control valve group, including：Stop valve shell has stop valve inner casing on the stop valve shell
Loading port and regulating valve inner casing loading port, the stop valve shell is interior to have stop valve inner casing and regulating valve inner casing, the main vapour
Valve shell has stop valve pressing ring and servo valve pressing ring, and the stop valve pressing ring and servo valve pressing ring are respectively used to stop valve
Inner casing and regulating valve inner casing compress positioning, and the stop valve inner casing and regulating valve inner casing connect, and the stop valve inner casing is packed into
There is stop valve end cap at mouthful, there is regulating valve end cap at the regulating valve inner casing loading port, have on the stop valve shell
Steam inlet pipe, the steam inlet pipe and stop valve inner casing penetrate through, and the stop valve inner casing has stop valve structure, the regulating valve inner casing
With regulating valve structure, the stop valve structure adjusts the uninterrupted that steam inlet pipe enters stop valve inner casing, the regulating valve knot
Structure adjusts the flow that stop valve inner casing enters regulating valve inner casing.
A kind of turbine high-pressure main steam control valve group of the invention, the stop valve inner casing and regulating valve inner casing and stop valve
It is respectively provided with main cushion block between shell and adjusts cushion block.
A kind of turbine high-pressure main steam control valve group of the invention, the stop valve shell be split type structure, described point
It is attached at body formula structure by swivel nut, the thread rotary orientations of the split type structure two sides is on the contrary, the i.e. left-handed other side in side
For dextrorotation.
A kind of turbine high-pressure main steam control valve group of the invention has sealing at the faying face of the split type structure
Pad.
A kind of turbine high-pressure main steam control valve group of the invention, the steam inlet pipe and stop valve inner casing by pipe screw thread into
The faying face of row connection, the steam inlet pipe and stop valve inner casing is provided with into steam packing seal.
A kind of turbine high-pressure main steam control valve group of the invention, the faying face of the stop valve inner casing and regulating valve inner casing
Place is provided with transition seal circle.
A kind of turbine high-pressure main steam control valve group of the invention, it is described into steam packing seal be C-shaped sealing ring.
A kind of turbine high-pressure main steam control valve group of the invention, the transition seal circle are C-shaped sealing ring.
A kind of turbine high-pressure main steam control valve group of the invention, the stop valve structure include stop valve sleeve assembly and
Stop valve butterfly valve component, the stop valve sleeve assembly are connected with stop valve inner casing, and the stop valve butterfly valve component is for controlling
The steam flow channel aperture of stop valve inner casing processed.
A kind of turbine high-pressure main steam control valve group of the invention, the regulating valve structure include regulating valve sleeve assembly and
Regulating valve butterfly valve component, the regulating valve sleeve assembly are connected with regulating valve inner casing, and the regulating valve butterfly valve component is for controlling
The steam flow channel aperture of regulating valve inner casing processed.
According to the above technical scheme, the beneficial effects of the invention are as follows：It is proposed a kind of turbine high-pressure main steam control valve group, it is main
Steam valve and regulating valve are all made of the structure of the connection sealing of double Shell, interlayer partition.Internal layer valve casing uses the height of higher temperature
Low cost materials, outer layer valve casing use the lower conventional metal material of price；High-pressure admission pipe connects and stop valve outer housing, stop valve
Outer housing and regulating valve outer housing are divided into using the split type structure being threadedly coupled, main side lid cooling chamber and adjusting end cap cooling chamber
The steam chambers of two different opposite inner casing body hypothermias, form specific temperature field；And interlayer cooling chamber and adjusting end cap are cold
But chamber is connected so as to share cooling steam.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of turbine high-pressure main steam control valve group of the present invention.
Specific embodiment
The present invention is further illustrated with attached drawing combined with specific embodiments below.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention
If Fig. 1 is a kind of embodiment of turbine high-pressure main steam control valve group of the present invention, a kind of turbine high-pressure main steam control valve
Group, including：There is on the stop valve shell 1 stop valve shell 12 loading port of stop valve inner casing and regulating valve inner casing 3 to be packed into
Mouthful, there is stop valve inner casing 2 and regulating valve inner casing 3, the stop valve shell 1 has stop valve pressure in the stop valve shell 1
Circle 24 and servo valve pressing ring 25, the stop valve pressing ring 24 and servo valve pressing ring 25 are respectively used to stop valve inner casing 2 and adjust
It saves valve inner casing 3 and compresses positioning, the stop valve inner casing 2 and regulating valve inner casing 3 connect, at 2 loading port of stop valve inner casing
With stop valve end cap 6, there is regulating valve end cap 7 at 3 loading port of regulating valve inner casing, have on the stop valve shell 1
Steam inlet pipe 26, the steam inlet pipe 26 are penetrated through with stop valve inner casing 2, and the stop valve inner casing 2 has stop valve structure 4, the tune
Saving valve inner casing 3 has regulating valve structure 5, and the flow that the stop valve structure 4 adjusts steam inlet pipe 26 into stop valve inner casing 2 is big
Small, the regulating valve structure 5 adjusts the flow that stop valve inner casing 2 enters regulating valve inner casing 3, the stop valve inner casing 2 and adjusting
It is respectively provided with main cushion block 10 between valve inner casing 3 and stop valve shell 1 and adjusts cushion block 12, the stop valve shell 1 is split type
Structure is attached at the split type structure by swivel nut 8, and the thread rotary orientation of the split type structure two sides is on the contrary, i.e. one
The left-handed other side in side is dextrorotation, has gasket 9 at the faying face of the split type structure, the steam inlet pipe 26 in stop valve
Shell 2 is attached by pipe screw thread, and the faying face of the steam inlet pipe 26 and stop valve inner casing 2 is provided with into steam packing seal 27, institute
State and be provided with transition seal circle 11 at the faying face of stop valve inner casing 2 and regulating valve inner casing 3, it is described into steam packing seal 27 be C-shaped
Sealing ring, the transition seal circle 11 are C-shaped sealing ring, and the stop valve structure 4 includes stop valve sleeve assembly 41 and main vapour
Valve setting valve module 42, the stop valve sleeve assembly 41 are connected with stop valve inner casing 2, and the stop valve butterfly valve component 42 is used for
The steam flow channel aperture of stop valve inner casing 2 is controlled, the regulating valve structure 5 includes regulating valve sleeve assembly 51 and regulating valve butterfly valve
Component 52, the regulating valve sleeve assembly 51 are connected with regulating valve inner casing 3, and the regulating valve butterfly valve component 52 is adjusted for controlling
Save the steam flow channel aperture of valve inner casing 3, the gap shape between the stop valve shell 1 and stop valve inner casing 2 and regulating valve inner casing 3
At interlayer cooling chamber 15, the regulating valve inner casing 3 passes through outer layer cylinder 13 and penetrates internal layer cylinder 14,13 He of outer layer cylinder
Gap between internal layer cylinder 14 forms jacket steam entrance 18, and the jacket steam entrance 18 is connected to interlayer cooling chamber 15,
There is jacket steam outlet 19, the jacket steam outlet 19 is close to 26 side of steam inlet pipe, the folder on the stop valve shell 1
Layer steam (vapor) outlet 19 is connected to interlayer cooling chamber 15.Have main side lid cooling between the stop valve end cap 6 and stop valve structure 4
Chamber 16.There is main side lid import 20 and main side lid outlet 21, the main side lid import 20 and main side lid on the stop valve end cap 6
Outlet 21 is connected to main side lid cooling chamber 16 respectively.Have between the adjusting end cap 7 and regulating valve structure 5 and adjusts end cap cooling
Chamber 17.Have on the adjusting end cap 7 and adjusts end cap outlet 23, the adjusting end cap outlet 23 and adjusting 17 phase of end cap cooling chamber
Connection.Have on the adjusting end cap 7 and adjusts end cap entrance 22, the adjusting end cap entrance 22 and adjusting 17 phase of end cap cooling chamber
Connection.
Main steam is flowed directly into internal layer cylinder 14 and is done work by steam inlet pipe 26, for 15,630 DEG C of interlayer cooling chamber ~
700 DEG C of steam turbine, when steam turbine declared working condition is run, steam pressure and temperature in interlayer cooling chamber 15 with respect to main steam compared with
Low, the generally half of main steam pressure, vapor (steam) temperature is about 200 DEG C lower than main steam, therefore jacket steam entrance 18 attracts
Steam between cylinder interlayer is proper as the cooling steam of interlayer cooling chamber 15, and steam ginseng is surveyed between cylinder interlayer
Several pairs of outer layer valve casing structure designs and selection are also fairly simple；Jacket steam outlet leads to reheating hot arc, so that reheating hot arc
Steam pressure is low compared with the cooling cavity pressure of interlayer, is allowed to form Differential pressure flow, constantly exchange heat with internal layer valve casing；
For main side lid cooling chamber 16：At runtime due to stop valve structure, valve rod is without gas leakage, therefore, main side lid cooling chamber 16
Must be introduced into cooling steam, main side lid cooling chamber 16 and its structural member cooled down to reduce temperature, with reduce structure size,
With material and cost.For example, main side lid import 20 may be from cold section of double reheat for double reheat power generation sets, it is cooling with main side lid
The temperature and pressure of chamber 16 and its outer layer valve casing, main side lid outlet 21 can lead to double reheat hot arc or introducing pressure is suitable
Heater sets up suitable pressure difference, to carry out fluid interchange.
For adjusting end cap cooling chamber 17：For regulating valve structure 5, cooling steam is designed according to regulating valve structure.
Such as：1. working as regulating valve at runtime, valve rod is without leakage vapour, at this point, cooling steam vapour source can be with main side lid cooling chamber 16, i.e. main side
The connection of end cap entrance 22 is adjusted in lid import 20, and adjusting end cap outlet 23 can 21 connection of main side lid outlet；2. regulating valve structure exists
When operation, valve rod has gas leakage, and because constant enthalpy temperature drop has been carried out in valve stem leakoff, then it is cold to end cap is adjusted to can be used as cooling steam for it
But chamber 17 is cooled down, to reduce the running temperature of regulating valve outer housing, at this point, no setting is required cooling steam entrance, that is, cancel
End cap entrance 22 is adjusted, only retains and adjusts end cap outlet 23 and it is entered into pressure, the suitable heater of temperature, form flowing and change
Heat.
By adopting the above-described technical solution, beneficial effect is, for the valve of high-parameter steam turbine bilayer valve casing, pass through
Sealing structure is connected, guarantees that inside and outside valve casing connection sealing is safe and reliable, interlayer is separated three solely by the design separated by interlayer
Vertical chamber, meets the double-deck valve casing and the double-deck valve deck requires the difference of cooling steam pressure, by C-shaped sealing ring, can satisfy
Expanding needs.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of turbine high-pressure main steam control valve group, which is characterized in that including：Stop valve shell（1）, the stop valve shell
（1）It is upper that there is stop valve inner casing（2）Loading port and regulating valve inner casing（3）Loading port, the stop valve shell（1）It is interior that there is main vapour
Valve inner casing（2）With regulating valve inner casing（3）, the stop valve shell（1）With stop valve pressing ring（24）With servo valve pressing ring
（25）, the stop valve pressing ring（24）With servo valve pressing ring（25）It is respectively used to stop valve inner casing（2）With regulating valve inner casing（3）
Compress positioning, the stop valve inner casing（2）With regulating valve inner casing（3）It connects, the stop valve inner casing（2）Have at loading port
Stop valve end cap（6）, the regulating valve inner casing（3）There is regulating valve end cap at loading port（7）, the stop valve shell（1）On
With steam inlet pipe（26）, the steam inlet pipe（26）With stop valve inner casing（2）Perforation, the stop valve inner casing（2）With stop valve
Structure（4）, the regulating valve inner casing（3）With regulating valve structure（5）, the stop valve structure（4）Adjust steam inlet pipe（26）Into
Enter stop valve inner casing（2）Uninterrupted, the regulating valve structure（5）Adjust stop valve inner casing（2）Into regulating valve inner casing（3）
Flow.
2. a kind of turbine high-pressure main steam control valve group according to claim 1, it is characterised in that：The stop valve inner casing
（2）With regulating valve inner casing（3）With stop valve shell（1）Between be respectively provided with main cushion block（10）With adjusting cushion block（12）.
3. a kind of turbine high-pressure main steam control valve group according to claim 1, it is characterised in that：The stop valve shell
（1）For split type structure, pass through swivel nut at the split type structure（8）It is attached.
4. a kind of turbine high-pressure main steam control valve group according to claim 3, it is characterised in that：The split type structure
Faying face at have gasket（9）.
5. a kind of turbine high-pressure main steam control valve group according to claim 1, it is characterised in that：The steam inlet pipe（26）
With stop valve inner casing（2）It is attached by pipe screw thread, the steam inlet pipe（26）With stop valve inner casing（2）Faying face be provided with
Into steam packing seal（27）.
6. a kind of turbine high-pressure main steam control valve group according to claim 1, it is characterised in that：The stop valve inner casing
（2）With regulating valve inner casing（3）Faying face at be provided with transition seal circle（11）.
7. a kind of turbine high-pressure main steam control valve group according to claim 5, it is characterised in that：It is described into steam packing seal
（27）For C-shaped sealing ring.
8. a kind of turbine high-pressure main steam control valve group according to claim 6, it is characterised in that：The transition seal circle
（11）For C-shaped sealing ring.
9. a kind of turbine high-pressure main steam control valve group according to claim 1, it is characterised in that：The stop valve structure
（4）Including stop valve sleeve assembly（41）With stop valve butterfly valve component（42）, the stop valve sleeve assembly（41）With stop valve
Inner casing（2）It is connected, the stop valve butterfly valve component（42）For controlling stop valve inner casing（2）Steam flow channel aperture.
10. according to a kind of turbine high-pressure main steam control valve group described in claim 1, it is characterised in that：The regulating valve structure
（5）Including regulating valve sleeve assembly（51）With regulating valve butterfly valve component（52）, the regulating valve sleeve assembly（51）With regulating valve
Inner casing（3）It is connected, the regulating valve butterfly valve component（52）For controlling to adjust valve inner casing（3）Steam flow channel aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810694844.9A CN108825312B (en) | 2018-06-29 | 2018-06-29 | High-pressure main steam regulating valve group of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810694844.9A CN108825312B (en) | 2018-06-29 | 2018-06-29 | High-pressure main steam regulating valve group of steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825312A true CN108825312A (en) | 2018-11-16 |
| CN108825312B CN108825312B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810694844.9A Active CN108825312B (en) | 2018-06-29 | 2018-06-29 | High-pressure main steam regulating valve group of steam turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042876A (en) * | 2019-12-20 | 2020-04-21 | 东方电气集团东方汽轮机有限公司 | Built-in interlayer heating device for steam turbine cylinder |
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| JP2009236039A (en) * | 2008-03-27 | 2009-10-15 | Toshiba Corp | Steam valve device and steam turbine plant equipped with the same |
| JP2010043590A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Heavy Ind Ltd | Steam valve for steam turbine |
| JP2010043591A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Heavy Ind Ltd | Steam valve device |
| CN102777654A (en) * | 2011-05-12 | 2012-11-14 | 阿尔斯通技术有限公司 | High temperature steam valve |
| CN103016813A (en) * | 2012-12-07 | 2013-04-03 | 上海电气电站设备有限公司 | High temperature and high pressure valve structure of steam turbine |
| CN207145020U (en) * | 2017-07-11 | 2018-03-27 | 江苏金通灵流体机械科技股份有限公司 | A kind of combined regulating valve suitable for small steam turbine |
-
2018
- 2018-06-29 CN CN201810694844.9A patent/CN108825312B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009236039A (en) * | 2008-03-27 | 2009-10-15 | Toshiba Corp | Steam valve device and steam turbine plant equipped with the same |
| JP2010043590A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Heavy Ind Ltd | Steam valve for steam turbine |
| JP2010043591A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Heavy Ind Ltd | Steam valve device |
| CN102777654A (en) * | 2011-05-12 | 2012-11-14 | 阿尔斯通技术有限公司 | High temperature steam valve |
| CN103016813A (en) * | 2012-12-07 | 2013-04-03 | 上海电气电站设备有限公司 | High temperature and high pressure valve structure of steam turbine |
| CN207145020U (en) * | 2017-07-11 | 2018-03-27 | 江苏金通灵流体机械科技股份有限公司 | A kind of combined regulating valve suitable for small steam turbine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042876A (en) * | 2019-12-20 | 2020-04-21 | 东方电气集团东方汽轮机有限公司 | Built-in interlayer heating device for steam turbine cylinder |
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| CN108825312B (en) | 2020-03-31 |
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Effective date of registration: 20200227 Address after: 618000, 666 Jiangxi Road, Jinsha hi tech Industrial Park, Sichuan, Deyang Applicant after: De Yang Dong Fang Steam Turbine Works Surface Engineering Co.,Ltd. Applicant after: Dongguan yuewan new energy Co., Ltd Address before: 618000, 666 Jiangxi Road, Jinsha hi tech Industrial Park, Sichuan, Deyang Applicant before: De Yang Dong Fang Steam Turbine Works Surface Engineering Co.,Ltd. |
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