CN113586174A - Cylinder warming valve group, steam turbine and cylinder warming method of steam turbine - Google Patents
Cylinder warming valve group, steam turbine and cylinder warming method of steam turbine Download PDFInfo
- Publication number
- CN113586174A CN113586174A CN202110899032.XA CN202110899032A CN113586174A CN 113586174 A CN113586174 A CN 113586174A CN 202110899032 A CN202110899032 A CN 202110899032A CN 113586174 A CN113586174 A CN 113586174A
- Authority
- CN
- China
- Prior art keywords
- steam
- cylinder
- pressure
- valve
- steam turbine
- 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
- 238000010792 warming Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract 3
- 239000002351 wastewater Substances 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The cylinder warming valve group is arranged on a high-pressure/high-medium-pressure cylinder of a steam turbine, and the temperature, the pressure and the flow of steam/hot air introduced into the high-pressure/high-medium-pressure cylinder of the steam turbine are controlled by adjusting the opening of the cylinder warming valve group; the warm jar valves include: and the corrosion-resistant valve bypass valve is arranged on a bypass of a main steam pipe gas circuit of the high-pressure/high-medium-pressure cylinder of the steam turbine. The method is simple, convenient and quick in overall operation, easy to control and suitable for the straight condensing/steam extraction type steam turbine capable of isolating the low-pressure section and the warm cylinder before cold and warm starting of the back pressure steam turbine.
Description
Technical Field
The disclosure relates to the field of steam turbines, in particular to a cylinder warming valve group, a steam turbine and a cylinder warming method thereof.
Background
The steam turbine is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, chemical industry and ship power plants.
At present, the main steam parameter of large and medium-sized turbines is high, when the turbines are started in cold and warm states, the turbines need to provide low-parameter steam or assist the boilers to start, and the energy consumption is high; for a main control unit, the starting is difficult or even impossible.
Disclosure of Invention
Technical problem to be solved
The invention provides a cylinder warming valve group, a steam turbine and a cylinder warming method thereof, and aims to solve the technical problems that the energy consumption is high, the starting is difficult and the starting cannot be performed.
(II) technical scheme
According to one aspect of the present disclosure, a cylinder warming valve set is provided, which is disposed on a high-pressure/high-medium-pressure cylinder of a steam turbine, and controls temperature, pressure and flow of steam/hot air introduced into the high-pressure/high-medium-pressure cylinder of the steam turbine by adjusting an opening degree of the cylinder warming valve set; above-mentioned warm jar valves includes:
at least one anticorrosion valve bypass valve is arranged on a bypass of a main steam pipe gas circuit of the high-pressure/high-medium-pressure cylinder of the steam turbine.
According to the embodiment of the present disclosure, the cylinder warming valve set further includes:
one or more of a main steam pipe warm cylinder valve, an inter-cylinder warm cylinder valve and a steam exhaust port warm cylinder valve;
the main steam pipe warm cylinder valve is arranged on a main steam pipe gas path of the high-pressure/high-medium-pressure cylinder of the steam turbine;
the inter-cylinder warming valve is arranged on an auxiliary steam pipeline on the high-pressure/high-medium-pressure cylinder of the steam turbine;
the exhaust port warm cylinder valve is arranged on an exhaust pipe steam inlet path on the high-pressure/high-medium-pressure cylinder of the steam turbine.
According to an embodiment of the present disclosure, the number of the anticorrosion valve bypass valves is n, where n is 1, 2 or 3.
According to the embodiment of the disclosure, the number of the main steam pipe warm cylinder valve, the inter-cylinder warm cylinder valve and the exhaust port warm cylinder valve is m, wherein m is 1, 2 or 3.
According to another aspect of the present disclosure, there is provided a steam turbine comprising:
the cylinder warming valve group is arranged on the high-pressure/high-medium-pressure cylinder of the steam turbine;
and the anti-corrosion valve is arranged on the main steam pipeline of the high-pressure/high-medium-pressure cylinder of the steam turbine.
According to an embodiment of the present disclosure, further comprising:
the main steam regulating valve is arranged on a main steam pipeline of the high-pressure/high-medium-pressure cylinder of the steam turbine and is arranged behind the anticorrosive valve along the steam inlet direction; and
and the drain pipe is arranged at the bottom of the high-pressure/high-medium-pressure cylinder of the steam turbine and used for discharging steam waste water.
According to an embodiment of the present disclosure, the steam turbine is a straight condensing/extraction steam turbine, further comprising:
the steam passage shut-off valve is arranged on a medium-low pressure communicated steam passage, one end of the medium-low pressure communicated steam passage is communicated with a steam exhaust pipe steam exhaust passage on the high-pressure/high-medium pressure cylinder of the steam turbine, the other end of the medium-low pressure communicated steam passage is communicated with a low-pressure steam inlet pipe gas passage of the low-pressure cylinder of the steam turbine, and the low-pressure cylinder of the steam turbine is also connected with a low-pressure steam exhaust pipe gas passage.
According to the embodiment of the present disclosure, the steam turbine is a back pressure steam turbine, and further includes:
and the back pressure steam exhaust stop valve is arranged on a steam exhaust pipe steam exhaust path on the high-pressure/high-medium-pressure cylinder of the steam turbine.
According to another aspect of the present disclosure, there is provided a method for warming up a cylinder of a steam turbine, including:
before the steam turbine is started, starting turning over the steam turbine, and completely closing the steam passage shut-off valve;
under the state of turning, adjusting the opening of the cylinder warming valve group, introducing steam/hot air into the high-pressure/high-medium-pressure cylinder of the steam turbine, and discharging steam wastewater from a drain pipe;
when the steam turbine enters a starting and rushing stage, the cylinder warming valve group is fully closed, and the steam passage shutoff valve is fully opened.
According to another aspect of the present disclosure, there is provided a method for warming up a cylinder of a steam turbine, including:
before the steam turbine is started, starting turning over the steam turbine, and completely closing the backpressure steam exhaust stop valve;
under the state of turning, adjusting the opening of the cylinder warming valve group, introducing steam/hot air into the high-pressure/high-medium-pressure cylinder of the steam turbine, and discharging steam wastewater from a drain pipe;
when the steam turbine enters a starting and rushing stage, the cylinder warming valve group is closed completely, and the back pressure steam exhaust stop valve is opened completely.
(III) advantageous effects
This warm jar valves that sets up, through the aperture of adjusting warm jar valves, realize the control to the purpose of letting in steam/hot-air's temperature, pressure and flow in the high-pressure/high-intermediate pressure cylinder of steam turbine to with the cold state, the temperature when warm attitude starts the temperature when steam turbine body temperature preheats to the hot start, with the requirement to main steam when realizing reducing the unit cold state, warm attitude starts, thereby reduced the consumption of the energy effectively, avoided starting the difficulty, the condition emergence that can't start.
The cylinder warming method disclosed by the invention can adapt to different external steam temperatures by configuring different cylinder warming valve groups so as to achieve the purpose of warming the cylinder, is simple, convenient and quick in overall operation, easy to control and suitable for warming the cylinder before cold and warm starting of a straight condensing/steam extracting type steam turbine and a back pressure steam turbine which can isolate a low pressure section.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following description of embodiments of the disclosure, which proceeds with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a straight condensing/extraction turbine system configuration according to the present disclosure;
FIG. 2 is a schematic diagram of a back pressure turbine system configuration of the present disclosure;
in the figure: 1-an anticorrosion valve, 2-an anticorrosion valve bypass valve, 3-a main steam regulating valve, 4-a main steam pipe cylinder warming valve, 5-a cylinder heating valve between cylinders, 6-a steam exhaust port cylinder warming valve, 7-a steam passage shutoff valve, 8-a backpressure steam exhaust stop valve, 9-a main steam pipe gas passage, 10-a bypass of the main steam pipe gas passage, 11-a main steam pipe gas passage, 12-an auxiliary steam pipe gas passage, 13-a steam exhaust pipe steam inlet gas passage, 14-a middle and low pressure communicating steam passage, 15-a steam turbine high pressure/high and medium pressure cylinder, 16-a drain pipe, 17-a steam turbine low pressure cylinder, 18-a steam seal, 19-a steam seal, 20-a steam exhaust pipe steam exhaust gas passage, 22-a low pressure steam inlet pipe gas passage and 23-a low pressure steam exhaust pipe gas passage.
Detailed Description
As shown in fig. 1, the embodiment of the present disclosure provides a straight condensing/extraction steam turbine, which includes a cylinder warming valve set, a steam turbine high pressure/high and medium pressure cylinder 15, an anticorrosion valve 1, a main steam regulating valve 3, a drain pipe 16, a steam passage shutoff valve 7, and a steam turbine low pressure cylinder 17.
Warm jar valves sets up on steam turbine high pressure/high-intermediate pressure cylinder 15, warm jar valves includes at least one anticorrosive valve bypass valve 2, the setting is on the bypass 10 of the main steam pipe gas circuit 9 of steam turbine high pressure/high-intermediate pressure cylinder 15, anticorrosive valve bypass valve 2's quantity can set up to 1, 2 or 3, anticorrosive valve bypass valve 2's quantity can be configured as required, during the operation, can adjust different apertures to every anticorrosive valve bypass valve 2, thereby improve this technical scheme's accuracy and suitability.
The cylinder warming valve group can also be provided with one or more of a main steam pipe cylinder warming valve 4, an inter-cylinder warming valve 5 and a steam outlet cylinder warming valve 6 according to actual conditions without the anticorrosion valve bypass valve 2. The main steam pipe warm cylinder valve 4 is provided on the main steam pipe gas circuit 11 of the steam turbine high pressure/high intermediate pressure cylinder 15. The inter-cylinder warm-up valve 5 is arranged on an auxiliary steam pipe gas circuit 12 on a high-pressure/high-medium-pressure cylinder 15 of the steam turbine. The steam outlet warm cylinder valve 6 is arranged on a steam inlet circuit 13 of a steam exhaust pipe on a high-pressure/high-medium-pressure cylinder 15 of the steam turbine.
According to the operation method and the requirement, the main steam pipe warm cylinder valve 4, the inter-cylinder warm cylinder valve 5 and the exhaust port warm cylinder valve 6 can be configured without, partially or completely, so that different external steam temperatures are adapted to achieve the purpose of warming the cylinder. For example, the main pipe warm cylinder valve 4, the inter-cylinder warm cylinder valve 5, and the exhaust port warm cylinder valve 6 may be provided alone, or the main pipe warm cylinder valve 4 and the inter-cylinder warm cylinder valve 5, the main pipe warm cylinder valve 4 and the exhaust port warm cylinder valve 6, the inter-cylinder warm cylinder valve 5 and the exhaust port warm cylinder valve 6, and the main pipe warm cylinder valve 4, the inter-cylinder warm cylinder valve 5, and the exhaust port warm cylinder valve 6 may be provided in combination.
The number of the main steam pipe warm cylinder valve 4, the inter-cylinder warm cylinder valve 5 and the exhaust port warm cylinder valve 6 can be set to be 1, 2 or 3 respectively. The number of the main steam pipe warm cylinder valve 4, the inter-cylinder warm cylinder valve 5 and the exhaust port warm cylinder valve 6 can be configured according to actual needs, and during operation, each valve can be adjusted to different opening degrees, so that the accuracy and the applicability of the technical scheme are improved.
The anti-corrosion valve 1 is arranged on a main steam pipe gas circuit 9 of the steam turbine high-pressure/high-medium-pressure cylinder 15, and the main steam regulating valve 3 is arranged on the main steam pipe gas circuit 9 of the steam turbine high-pressure/high-medium-pressure cylinder 15 and behind the anti-corrosion valve 1 along the steam inlet direction.
A drain pipe 16 is provided at the bottom of the turbine high pressure/high intermediate pressure cylinder 15 for discharging the steam waste water. The number of the drain pipes 16 can be set to be 1 or more, and a plurality of drain pipes 16 are arranged to work simultaneously, so that the efficiency of discharging the steam waste water can be improved.
A steam seal 18 is provided on both sides of the turbine high pressure/high and medium pressure cylinder 15, thereby effectively preventing steam leakage and leakage of vacuum side air.
The steam passage shut-off valve 7 is arranged on the medium and low pressure communicating steam passage 14, one end of the medium and low pressure communicating steam passage 14 is communicated with a steam exhaust pipe steam exhaust gas passage 20 on the steam turbine high pressure/high and medium pressure cylinder 15, the other end of the medium and low pressure communicating steam passage 14 is communicated with a low pressure steam inlet pipe gas passage 22 of the steam turbine low pressure cylinder 17, and the steam turbine low pressure cylinder 17 is also connected with a low pressure steam exhaust pipe gas passage 23.
The steam passage shutoff valve 7 is used for controlling the opening and closing of the middle-low pressure communication steam passage 14. Steam seals 19 are provided on both sides of the turbine low-pressure cylinder 17, thereby effectively preventing leakage of steam and leakage of vacuum-side air.
The steam turbine of this disclosure setting, through the aperture of adjustment warm jar valves, realize the control to the steam turbine high pressure/high-intermediate pressure cylinder 15 in let in the temperature, pressure and the purpose of flow of steam/hot-air to the temperature when preheating the cold state, the temperature when warm attitude starts the steam turbine temperature to the hot start-up, to the requirement to main steam when realizing reducing unit cold state, warm attitude start-up, thereby reduced the consumption of the energy effectively, avoided starting the condition emergence difficult, unable start.
As shown in fig. 2, embodiments of the present disclosure provide a back pressure turbine that differs from the straight condensing/extraction turbine of fig. 1 in that: instead of the steam passage shutoff valve 7 and the turbine low-pressure cylinder 17, a back pressure steam exhaust shutoff valve 8 is provided. The back pressure steam exhaust stop valve 8 is arranged on a steam exhaust pipe steam exhaust gas path 20 on the steam turbine high pressure/high and medium pressure cylinder 15, and the back pressure steam exhaust stop valve 8 is used for controlling the opening and closing of the steam exhaust pipe steam exhaust gas path 20.
According to an embodiment of the present disclosure, there is also provided a cylinder warming method applied to a straight condensing/extraction steam turbine shown in fig. 1, the cylinder warming method including:
before the steam turbine is started, the steam turbine starts turning, and the full-closed steam passage shut-off valve 7 is closed;
in a turning state, adjusting the opening of the cylinder warming valve group, introducing steam/hot air into a high-pressure/high-medium-pressure cylinder 15 of a steam turbine, and discharging steam wastewater from a drain pipe 16;
when the steam turbine enters a starting and rushing stage, the cylinder warming valve group is fully closed, and the steam passage shutoff valve 7 is fully opened.
The first embodiment is as follows:
the cylinder warming valve group comprises a main steam pipe cylinder warming valve 4, an inter-cylinder warming valve 5 and a steam exhaust port cylinder warming valve 6, before the steam turbine is started, the steam turbine starts to be turned, a full-closing steam passage shut-off valve 7 is arranged, in the turning state, the opening degrees of the main steam pipe cylinder warming valve 4, the inter-cylinder warming valve 5 and the steam exhaust port cylinder warming valve 6 are adjusted, steam/hot air is introduced into a high-pressure/high-middle-pressure steam cylinder 15 of the steam turbine, steam waste water is exhausted from a drain pipe 16, the opening degrees of the main steam pipe cylinder warming valve 4, the inter-cylinder warming valve 5, the steam exhaust port cylinder warming valve 6 and the drain pipe 16 are controlled, the temperature of the high-pressure/high-middle-pressure steam cylinder 15 of the steam turbine is gradually increased until the temperature of a point of the high-pressure/high-middle-pressure steam cylinder 15 of the steam turbine reaches a required temperature value, the preferred value is 300 ℃, the full-closing cylinder warming valve group is arranged, the full-opening steam passage shut-off valve 7 is arranged, and the steam turbine enters a starting and turning stage.
Example two:
the cylinder warming valve group comprises an anticorrosion valve bypass valve 2, when a boiler warms a pipe, a steam turbine starts to be turned, a full-closed steam passage shut-off valve 7 is used, under the turning state, when the steam pressure of the boiler warms the pipe is 0.2Mpa, the opening degree of the anticorrosion valve bypass valve 2 is controlled, steam/hot air is introduced into a high-pressure/high-medium-pressure cylinder 15 of the steam turbine, steam waste water is discharged from a drain pipe 16, the opening degrees of the anticorrosion valve bypass valve 2 and the drain pipe 16 are controlled, the temperature of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine is gradually increased until the temperature of a measuring point of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine reaches a required temperature value, the optimal value is 300 ℃, the full-closed cylinder warming valve group, the full-open steam passage shut-off valve 7 is used, and the steam turbine enters a starting and turning stage.
Example three:
the cylinder warming valve group comprises an anti-corrosion valve 1, when a boiler warms pipes, a steam turbine starts to be turned, a full-closed steam passage shut-off valve 7 is used, under the turning state, when the steam pressure of the boiler warms pipes is 0.2Mpa, the opening degree of the anti-corrosion valve 1 is controlled, steam/hot air is introduced into a high-pressure/high-medium-pressure cylinder 15 of the steam turbine, steam waste water is discharged from a drain pipe 16, the opening degrees of the anti-corrosion valve 1 and the drain pipe 16 are controlled, the temperature of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine is gradually increased until the temperature of a measuring point of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine reaches a required temperature value, the optimal value is 300 ℃, the full-closed cylinder warming valve group, the full-open steam passage shut-off valve 7 is used, and the steam turbine enters a starting and turning stage.
According to an embodiment of the present disclosure, there is provided a method for warming up a cylinder, which is applied to a back pressure turbine shown in fig. 2, the method for warming up a cylinder including:
before the steam turbine is started, the steam turbine starts turning, and the back pressure steam exhaust stop valve 8 is fully closed;
in a turning state, adjusting the opening of the cylinder warming valve group, introducing steam/hot air into a high-pressure/high-medium-pressure cylinder 15 of a steam turbine, and discharging steam wastewater from a drain pipe 16;
when the steam turbine enters a starting and rushing stage, the cylinder warming valve group is fully closed, and the back pressure steam exhaust stop valve 8 is fully opened.
Example four:
the cylinder warming valve group comprises a main steam pipe cylinder warming valve 4, an inter-cylinder warming valve 5 and a steam exhaust port cylinder warming valve 6, before the steam turbine is started, the steam turbine starts to be turned, a back pressure steam exhaust stop valve 8 is fully closed, the opening degrees of the main steam pipe cylinder warming valve 4, the inter-cylinder warming valve 5 and the steam exhaust port cylinder warming valve 6 are adjusted under the turning state, steam/hot air is introduced into a high-pressure/high-middle-pressure cylinder 15 of the steam turbine, steam waste water is exhausted from a drain pipe 16, the opening degrees of the main steam pipe cylinder warming valve 4, the inter-cylinder warming valve 5, the steam exhaust port cylinder warming valve 6 and the drain pipe 16 are controlled, the temperature of the high-pressure/high-middle-pressure cylinder 15 of the steam turbine is gradually increased until the temperature of a point of the high-pressure/high-middle-pressure cylinder 15 of the steam turbine reaches a required temperature value, the preferred value is 300 ℃, the cylinder warming valve group is fully closed, and the steam turbine enters a starting and turning stage.
Example five:
the cylinder warming valve group comprises an anticorrosion valve bypass valve 2, when a boiler warms a pipe, a steam turbine starts to be turned, a back pressure steam exhaust stop valve 8 is fully closed, when the steam pressure of the boiler warms the pipe is at 2Mpa under the turning state, the opening degree of the anticorrosion valve bypass valve 2 is controlled, steam/hot air is introduced into a high-pressure/high-medium-pressure cylinder 15 of the steam turbine, steam waste water is discharged from a drain pipe, the opening degrees of the anticorrosion valve bypass valve 2 and the drain pipe 16 are controlled, the temperature of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine is gradually increased until the temperature of a measuring point of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine reaches a required temperature value, the preferred value is 300 ℃, the cylinder warming valve group is fully closed, and the steam turbine enters a starting and turning stage.
Example six:
the cylinder warming valve group comprises an anticorrosion valve 1, when a boiler warms pipes, a steam turbine starts to be turned, a back pressure steam exhaust stop valve 8 is fully closed, when the steam pressure of the boiler warms pipes is 0.2Mpa under the turning state, the opening degree of the anticorrosion valve 1 is controlled, steam/hot air is introduced into a high-pressure/high-medium-pressure cylinder 15 of the steam turbine, steam waste water is discharged from a drain pipe 16, the opening degrees of the anticorrosion valve 1 and the drain pipe 16 are controlled, the temperature of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine is gradually increased until the temperature of a measuring point of the high-pressure/high-medium-pressure cylinder 15 of the steam turbine reaches a required temperature value, the preferred value is 300 ℃, the cylinder warming valve group is fully closed, a full-open steam passage stop valve 7 is used, and the steam turbine enters a starting and impacting stage.
Through the cylinder warming method disclosed by the invention, different cylinder warming valve groups can be configured to adapt to different external steam temperatures so as to achieve the purpose of warming the cylinder, the whole operation is simple, convenient and quick, the control is easy, and the cylinder warming method is suitable for warming the cylinder before cold and warm starting of a straight condensing/steam extracting type steam turbine and a backpressure steam turbine which can isolate a low-pressure section.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A cylinder warming valve group is arranged on a high-pressure/high-medium-pressure cylinder of a steam turbine, and the temperature, the pressure and the flow of steam/hot air introduced into the high-pressure/high-medium-pressure cylinder of the steam turbine are controlled by adjusting the opening of the cylinder warming valve group; the warm jar valves include:
and the at least one corrosion-resistant valve bypass valve (2) is arranged on a bypass of a main steam pipe gas circuit of the high-pressure/high-medium-pressure cylinder of the steam turbine.
2. The cylinder warming valve bank of claim 1, wherein the cylinder warming valve bank further comprises:
one or more of a main steam pipe warm cylinder valve (4), an inter-cylinder warm cylinder valve (5) and a steam outlet warm cylinder valve (6);
the main steam pipe warm cylinder valve (4) is arranged on a main steam pipe gas circuit of the high-pressure/high-medium-pressure cylinder of the steam turbine;
the inter-cylinder warming cylinder valve (5) is arranged on an auxiliary steam pipeline on the high-pressure/high-medium-pressure cylinder of the steam turbine;
the exhaust port warm cylinder valve (6) is arranged on an exhaust pipe steam inlet pipeline on the high-pressure/high-medium-pressure cylinder of the steam turbine.
3. Valve block according to claim 1, wherein the number of corrosion protection valve bypass valves (2) is n, wherein n is 1, 2 or 3.
4. Valve group according to claim 2, wherein the number of main steam pipe warm cylinder valves (4), inter-cylinder warm cylinder valves (5) and exhaust steam port warm cylinder valves (6) is m, wherein m is 1, 2 or 3.
5. A steam turbine, comprising:
the cylinder warming valve group according to any one of claims 1 to 4, which is provided on the turbine high pressure/high medium pressure cylinder;
and the anti-corrosion valve (1) is arranged on a main steam pipeline of the high-pressure/high-medium-pressure cylinder of the steam turbine.
6. The steam turbine of claim 5, further comprising:
the main steam regulating valve (3) is arranged on a main steam pipeline of the high-pressure/high-medium-pressure cylinder of the steam turbine and is arranged behind the anticorrosion valve (1) along the steam inlet direction; and
and the drain pipe is arranged at the bottom of the high-pressure/high-medium-pressure cylinder of the steam turbine and used for discharging steam waste water.
7. The turbine according to claim 5 or 6, wherein the turbine is a straight condensing/extraction turbine, further comprising:
the steam passage shut-off valve (7) is arranged on the middle-low pressure communicated steam passage, one end of the middle-low pressure communicated steam passage is communicated with a steam exhaust pipe steam exhaust gas passage on the high-pressure/high-middle-pressure cylinder of the steam turbine, the other end of the middle-low pressure communicated steam passage is communicated with a low-pressure steam inlet pipe gas passage of the low-pressure cylinder of the steam turbine, and the low-pressure cylinder of the steam turbine is also connected with a low-pressure steam exhaust pipe gas passage.
8. The turbine according to claim 5 or 6, wherein the turbine is a back pressure turbine, further comprising:
and the back pressure steam exhaust stop valve (8) is arranged on a steam exhaust pipe steam exhaust path on the high-pressure/high-medium-pressure cylinder of the steam turbine.
9. A method of warming up a steam turbine applied to the steam turbine of claim 7, comprising:
before the steam turbine is started, starting turning over the steam turbine, and completely closing the steam passage shut-off valve (7);
under the turning state, adjusting the opening of the cylinder warming valve group, introducing steam/hot air into the high-pressure/high-medium-pressure cylinder of the steam turbine, and discharging steam wastewater from a drain pipe;
and when the steam turbine enters a starting and rushing stage, fully closing the cylinder warming valve group and fully opening the steam passage shutoff valve (7).
10. A method of warming up a steam turbine applied to the steam turbine of claim 8, comprising:
before the steam turbine is started, starting turning over the steam turbine, and completely closing the backpressure steam exhaust stop valve (8);
under the turning state, adjusting the opening of the cylinder warming valve group, introducing steam/hot air into the high-pressure/high-medium-pressure cylinder of the steam turbine, and discharging steam wastewater from a drain pipe;
and when the steam turbine enters a starting and rushing stage, the cylinder warming valve group is fully closed, and the back pressure steam exhaust stop valve (8) is fully opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110899032.XA CN113586174A (en) | 2021-08-05 | 2021-08-05 | Cylinder warming valve group, steam turbine and cylinder warming method of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110899032.XA CN113586174A (en) | 2021-08-05 | 2021-08-05 | Cylinder warming valve group, steam turbine and cylinder warming method of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113586174A true CN113586174A (en) | 2021-11-02 |
Family
ID=78255621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110899032.XA Pending CN113586174A (en) | 2021-08-05 | 2021-08-05 | Cylinder warming valve group, steam turbine and cylinder warming method of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113586174A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943696A (en) * | 2012-11-19 | 2013-02-27 | 辽宁省电力有限公司电力科学研究院 | Beizhong 350MW supercritical high-intermediate-pressure combined cylinder steam turbine set cylinder warming process |
| CN205876402U (en) * | 2016-06-30 | 2017-01-11 | 珠海市钰海电力有限公司 | Gas and steam combined cycle generating set's supplementary warm jar mechanism of steam turbine |
| CN207261055U (en) * | 2017-10-20 | 2018-04-20 | 中国神华能源股份有限公司 | Steam turbine device for rapidly starting |
| CN207278308U (en) * | 2017-08-11 | 2018-04-27 | 上海电气电站设备有限公司 | Combination circulation steam turbine cold start pre-warming system |
| CN209855863U (en) * | 2019-04-09 | 2019-12-27 | 浙江昇能电力科技有限公司 | Device for shortening cold starting time of steam turbine |
-
2021
- 2021-08-05 CN CN202110899032.XA patent/CN113586174A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943696A (en) * | 2012-11-19 | 2013-02-27 | 辽宁省电力有限公司电力科学研究院 | Beizhong 350MW supercritical high-intermediate-pressure combined cylinder steam turbine set cylinder warming process |
| CN205876402U (en) * | 2016-06-30 | 2017-01-11 | 珠海市钰海电力有限公司 | Gas and steam combined cycle generating set's supplementary warm jar mechanism of steam turbine |
| CN207278308U (en) * | 2017-08-11 | 2018-04-27 | 上海电气电站设备有限公司 | Combination circulation steam turbine cold start pre-warming system |
| CN207261055U (en) * | 2017-10-20 | 2018-04-20 | 中国神华能源股份有限公司 | Steam turbine device for rapidly starting |
| CN209855863U (en) * | 2019-04-09 | 2019-12-27 | 浙江昇能电力科技有限公司 | Device for shortening cold starting time of steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108506057B (en) | Cogeneration system for cutting off steam inlet of low-pressure cylinder and adjusting method | |
| JP5860597B2 (en) | System and method for preheating exhaust heat recovery boiler piping | |
| JP3977909B2 (en) | Recoverable steam cooled gas turbine | |
| CN112610286A (en) | Multi-steam-source shaft seal steam/gas supply system of power station unit and control method thereof | |
| CN112228173B (en) | Thermoelectric decoupling system and method combining low-back-pressure cutting cylinder and high back pressure | |
| CN111379603A (en) | Low-pressure cylinder zero-power unit heating pipe bypass system and working method thereof | |
| CZ20027A3 (en) | Method and apparatus for increasing power of gas turbine power cycles | |
| CN216077227U (en) | Warm jar steam turbine | |
| CN113586174A (en) | Cylinder warming valve group, steam turbine and cylinder warming method of steam turbine | |
| CN212671880U (en) | 200MW ultrahigh-pressure three-cylinder three-exhaust back pressure modified steam turbine | |
| JP5511429B2 (en) | Heat utilization system | |
| CN216446983U (en) | Steam turbine is reformed transform to three steam extraction flexibility of 200MW series superhigh pressure three jars | |
| CN215444163U (en) | Quick starting system of gas steam unit | |
| CN110925036B (en) | Low-pressure cylinder flexible output cooling system under steam extraction heat supply working condition and operation method thereof | |
| CN216950586U (en) | Natural gas preheating system by using residual heat of residual boiler | |
| US4273508A (en) | Method for automatic control of power plant and power plant of compressor station of gas pipeline system, wherein said method is effected | |
| CN215633166U (en) | Quick start system of circulation combined unit | |
| CN114165302A (en) | 200MW series ultrahigh pressure three-cylinder three-steam-exhaust flexible modified steam turbine | |
| CN107829832B (en) | Circulation bypass system for performance heater | |
| CN207647626U (en) | A kind of cycle bypath system for performance heater | |
| JP2003020905A (en) | Operating system and operating method for reheating electric power plant | |
| CN216741639U (en) | System for guaranteeing quality of small machine steam source in steam supply mode of rotating partition plate | |
| CN112049697B (en) | 200MW ultrahigh-pressure three-cylinder three-exhaust back pressure transformation steam turbine | |
| CN220134039U (en) | Shaft seal steam leakage bypass device applied to steam turbine generator unit flexibility transformation | |
| CN214577220U (en) | Multi-steam-source shaft seal steam/gas supply system of power station unit |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211102 |