CN206801621U - A kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening - Google Patents
A kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening Download PDFInfo
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- CN206801621U CN206801621U CN201720604163.XU CN201720604163U CN206801621U CN 206801621 U CN206801621 U CN 206801621U CN 201720604163 U CN201720604163 U CN 201720604163U CN 206801621 U CN206801621 U CN 206801621U
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- cylinder
- low pressure
- steam
- cooling
- extraction
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Abstract
The utility model discloses a kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening, including intermediate pressure cylinder, intermediate pressure cylinder connects low pressure (LP) cylinder, the steam discharge connection condenser of low pressure (LP) cylinder, low pressure (LP) cylinder connects extraction line, extraction control valve group is provided with extraction line, cooling steam system is accessed between extraction control valve group and low pressure (LP) cylinder.When steam turbine excision low pressure (LP) cylinder enters automotive row, cooling steam is introduced to by low pressure (LP) cylinder flow passage component by turbine low pressure cylinder extraction opening, low pressure (LP) cylinder linear leaf is cooled down using the steam of low pressure, low temperature, so that cooling steam can more effectively cool down low pressure linear leaf, the steam consumption of cooling low pressure (LP) cylinder linear leaf is reduced, improves the heat supply pump gas ablity of steam turbine.
Description
Technical field
The utility model belongs to turbine system design field, and in particular to a kind of low pressure (LP) cylinder linear leaf based on extraction opening
Cooling system.
Background technology
At present, to avoid turbine low pressure cylinder linear leaf from producing the crisis of air blast, flutter etc. under the conditions of little volume flow
The problem of Turbine Safety is run, when often requiring that steam turbine operation, turbine discharge flow is (general not less than certain limit value
About 10%~30% or so of declared working condition main steam flow).For thermal power plant unit, by the shadow of low pressure (LP) cylinder exhaust steam flow limit value
Ring, steam turbine heat supply pump gas ablity is by a definite limitation.
Utility model content
A kind of the purpose of this utility model is to overcome above-mentioned deficiency, there is provided low pressure (LP) cylinder linear leaf cooling based on extraction opening
System, so that cooling steam can more effectively cool down low pressure linear leaf, the steam for reducing cooling low pressure (LP) cylinder linear leaf disappears
Consumption, improve the heat supply pump gas ablity of steam turbine.
In order to achieve the above object, the utility model includes intermediate pressure cylinder, intermediate pressure cylinder connection low pressure (LP) cylinder, and the steam discharge of low pressure (LP) cylinder connects
Condenser is connect, low pressure (LP) cylinder is provided with extraction opening, and extraction control valve group is provided with extraction line, and cooling steam system is controlled from drawing gas
Low pressure (LP) cylinder flow passage component is accessed before valve group processed.
Medium pressure cylinder connects low pressure (LP) cylinder by mesolow communicating pipe, and mesolow is provided with valve on communicating pipe.
Cooling control valve group is provided with accordingly in the cooling steam system.
Flowmeter is provided with the cooling steam system.
The cooling steam system accesses on the jet chimney between extraction control valve group and low pressure (LP) cylinder extraction opening.
Compared with prior art, the utility model is by when steam turbine cuts off low pressure (LP) cylinder and enters automotive row, passing through steam turbine
Cooling steam is introduced to low pressure (LP) cylinder flow passage component by low pressure (LP) cylinder extraction opening, is come into leaves using the steam cooling low pressure (LP) cylinder of low pressure, low temperature
Piece, so that cooling steam can more effectively cool down low pressure linear leaf, the steam consumption of cooling low pressure (LP) cylinder linear leaf is reduced, is carried
The heat supply pump gas ablity of high steam turbine.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Wherein, 1, intermediate pressure cylinder；2nd, low pressure (LP) cylinder；3rd, condenser；4th, extraction line；5th, extraction control valve group；6th, cooling steam
System, 7, low pressure (LP) cylinder extraction opening, 8, valve, 9, cooling control valve group, 10, flowmeter.
Embodiment
The utility model is described further with reference to the accompanying drawings and examples.
Embodiment 1：
The utility model includes intermediate pressure cylinder 1, and intermediate pressure cylinder 1 connects low pressure (LP) cylinder 2, and the steam discharge connection condenser 3 of low pressure (LP) cylinder 2 is low
Cylinder pressure 2 connects extraction line 4, is provided with extraction control valve group 5 on extraction line 4, and cooling steam system 6 is from extraction control valve group
The access flow passage component of low pressure (LP) cylinder 2, steaming of the cooling steam system 6 between extraction control valve group 5 and low pressure (LP) cylinder extraction opening 7 before 5
Steam pipe accesses on road.
Method of work of the present utility model comprises the following steps：
Step 1, the steam discharge of intermediate pressure cylinder 1 are passed through in low pressure (LP) cylinder 2；
Step 2, the cooling that control cooling steam system 6 is passed through for cooling down low pressure (LP) cylinder linear leaf into low pressure (LP) cylinder 2 are steamed
Vapour.
Embodiment 2：
The utility model includes intermediate pressure cylinder 1, and intermediate pressure cylinder 1 connects low pressure (LP) cylinder 2, and the steam discharge connection condenser 3 of low pressure (LP) cylinder 2 is low
Cylinder pressure 2 connects extraction line 4, is provided with extraction control valve group 5 on extraction line 4, and cooling steam system 6 is from extraction control valve group
The flow passage component of low pressure (LP) cylinder 2 is accessed on jet chimney between 5 and low pressure (LP) cylinder extraction opening 7, low pressure is connected by mesolow communicating pipe
Cylinder 2, valve 8 is provided with mesolow communicating pipe, is but provided with cooling control valve group 9 and flowmeter in vapour system 6 accordingly
10。
Method of work of the present utility model comprises the following steps：
Step 1, the steam discharge of intermediate pressure cylinder 1 are passed through in low pressure (LP) cylinder 2；
Step 2, vapour is entered by the adjustment low pressure (LP) cylinder 2 of valve 8 on communicating pipe, by observing the reading on flowmeter 10
The aperture of control cooling control valve group 9, so as to control cooling steam system 6 to be passed through into low pressure (LP) cylinder 2 for cooling down low pressure (LP) cylinder length
The flow of the cooling steam of blade.
Claims (5)
1. a kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening, it is characterised in that including intermediate pressure cylinder (1), intermediate pressure cylinder (1)
Low pressure (LP) cylinder (2), the steam discharge connection condenser (3) of low pressure (LP) cylinder (2) are connected, low pressure (LP) cylinder (2) is provided with extraction opening (7), extraction line
(4) extraction control valve group (5) is provided with, cooling steam system (6) accesses low pressure (LP) cylinder (2) before extraction control valve group (5)
Flow passage component.
2. a kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening according to claim 1, it is characterised in that described
Intermediate pressure cylinder (1) connects low pressure (LP) cylinder (2) by mesolow communicating pipe, and valve (8) is provided with mesolow communicating pipe.
3. a kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening according to claim 1, it is characterised in that described
Cooling control valve group (9) is provided with cooling steam system (6) accordingly.
4. a kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening according to claim 1, it is characterised in that described
Flowmeter (10) is provided with cooling steam system (6).
5. a kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening according to claim 1, it is characterised in that described
Cooling steam system (6) accesses on the jet chimney between extraction control valve group (5) and low pressure (LP) cylinder extraction opening (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720604163.XU CN206801621U (en) | 2017-05-26 | 2017-05-26 | A kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720604163.XU CN206801621U (en) | 2017-05-26 | 2017-05-26 | A kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801621U true CN206801621U (en) | 2017-12-26 |
Family
ID=60742018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720604163.XU Active CN206801621U (en) | 2017-05-26 | 2017-05-26 | A kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988803A (en) * | 2017-05-26 | 2017-07-28 | 中国华能集团公司 | A kind of low pressure (LP) cylinder linear leaf cooling system and method based on extraction opening |
-
2017
- 2017-05-26 CN CN201720604163.XU patent/CN206801621U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988803A (en) * | 2017-05-26 | 2017-07-28 | 中国华能集团公司 | A kind of low pressure (LP) cylinder linear leaf cooling system and method based on extraction opening |
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