CN207004588U - A kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices - Google Patents
A kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices Download PDFInfo
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- CN207004588U CN207004588U CN201720392644.9U CN201720392644U CN207004588U CN 207004588 U CN207004588 U CN 207004588U CN 201720392644 U CN201720392644 U CN 201720392644U CN 207004588 U CN207004588 U CN 207004588U
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Abstract
The utility model discloses a kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices, including steam turbine high pressure cylinder, steam turbine intermediate pressure cylinder, steam turbine low pressure (LP) cylinder and low pressure (LP) cylinder intake valve, low pressure (LP) cylinder intake valve to be arranged on the communicating pipe of steam turbine intermediate pressure cylinder and steam turbine low pressure (LP) cylinder；Turbo-generator Set operational factor is monitored by steam turbine generator set control system in real time, low pressure (LP) cylinder admission valve is closed automatically when steam turbine generator set control system detects that Turbo-generator Set load is less than setting value, Turbo-generator Set load is higher than automatic standard-sized sheet low pressure (LP) cylinder admission valve during setting value, using the technical program, for more low pressure (LP) cylinder Steam Turbines, in the underrun stage, run by cutting off a low pressure (LP) cylinder, improve the steam inlet condition into vapour low pressure (LP) cylinder, reduce the windage loss into vapour low pressure (LP) cylinder, improve the operational efficiency into vapour low pressure (LP) cylinder, improve unit operation stability, solve the deficiencies in the prior art.
Description
Technical field
Steam Turbine is the utility model is related to, the low pressure (LP) cylinder particularly with more low pressure (LP) cylinder Turbo-generator Sets enters vapour part
Design and transformation, belong to right generating set optimisation technique field.
Background technology
Steam Turbine is the capital equipment in Thermal Power Station, carries the effect for converting heat into mechanical energy, steamer
The height of engine efficiency directly affects the efficiency in power plant, for coal-burning power plant, will directly affect the thermal efficiency, the coal consumption water of unit
It is flat.
Due to the significantly lifting of installed capacity in recent years, national power consumption is not grown simultaneously, causes power plant
Generally relatively low using hourage, most of thermal power plant utilized hourage between 3000~4500 hours, or even part provinces and regions
Thermal power plant is less than 2000 hours using hourage；On the other hand, electricity consumption peak-valley difference is larger among one day, in low power consumption, fire
Power power plant is all unable to oepration at full load, and the halfload of part power plant one can not all reach, often in depth peak regulation state.
Steam Turbine efficiency under unit nominal parameter, nominal output operating mode according to designing, in the operating mode tubine
Efficiency highest, when being run under operating condition off-design design conditions, deviation is more, and turbine efficiency is typically lower.Especially
It is low pressure (LP) cylinder part, at low load, finally what not only can not effectively do work, and action of blast more likely occur, consume part
Unit mechanical energy, is converted into heat energy, causes exhaust temperature to raise, and cylinder efficiency declines, and steam discharge loss increase, operating states of the units is disliked
Change.
Utility model content
The technical problems to be solved in the utility model is：For more low pressure (LP) cylinder Steam Turbines, in the underrun stage, lead to
Cross excision one low pressure (LP) cylinder operation, improve the steam inlet condition into vapour low pressure (LP) cylinder, reduce the windage loss into vapour low pressure (LP) cylinder, improve into
The operational efficiency of vapour low pressure (LP) cylinder, improve unit operation stability.
The technical solution of the utility model is：A kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices, including steam turbine
High pressure cylinder, steam turbine intermediate pressure cylinder, steam turbine low pressure (LP) cylinder and low pressure (LP) cylinder intake valve, it is characterised in that：Described low pressure (LP) cylinder intake valve installation
On the communicating pipe of steam turbine intermediate pressure cylinder and steam turbine low pressure (LP) cylinder.
Described steam turbine low pressure (LP) cylinder at least two.
Described low pressure (LP) cylinder intake valve is electro-hydraulic switching valve, and low pressure (LP) cylinder intake valve installation site is that multiple low pressure (LP) cylinders share company
During siphunculus, before low pressure (LP) cylinder intake valve is arranged on any one LP steam admission；During for not sharing mesolow communicating pipe, low pressure
Before cylinder intake valve is arranged on any one LP steam admission.
Using the technical solution of the utility model：Turbo-generator Set fortune is monitored by steam turbine generator set control system in real time
Row parameter, low pressure is closed automatically when steam turbine generator set control system detects that Turbo-generator Set load is less than setting value
Cylinder admission valve, Turbo-generator Set load are higher than automatic standard-sized sheet low pressure (LP) cylinder admission valve during setting value.The utility model can be with
The method of operation of current unit at low load is substituted, obtains higher economic benefit.
Compared with prior art, there is some following beneficial effect using the technical solution of the utility model：
A, improve unit operation efficiency.At low load, design work of the low pressure (LP) cylinder due under throttle flow, deviateing low pressure (LP) cylinder
Condition, efficiency is low, and the utility model is run by cutting off more one low pressure (LP) cylinder of low pressure (LP) cylinder Steam Turbine, improves entering into vapour low pressure (LP) cylinder
Vapour parameter, improve low pressure (LP) cylinder operational efficiency；
B, reduce air blast friction loss.Under running on the lower load, low pressure (LP) cylinder deviates the design work of low pressure (LP) cylinder because throttle flow is few
Condition, steam what can not only do work behind low pressure (LP) cylinder by design, and can produce larger air blast friction loss, cause machinery
Work(is consumed, exhaust temperature increase；
C, energy-saving and emission-reduction, improve unit operation economy., will necessarily with the raising of unit efficiency under same operating
The intake of fuel is reduced, reduces pollutant discharge amount, reduces the pollution to environment, while is also had to raising Benefit of Unit important
Effect；
D, improve unit operation stability.The utility model reduces the exhaust temperature that unit is run at low load, has
Beneficial to the stable operation of unit.
Brief description of the drawings
Fig. 1 is that the utility model sets up valve location schematic diagram 1；
Fig. 2 is that the utility model sets up valve location schematic diagram 2.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings
As shown in accompanying drawing 1-2, a kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices, including steam turbine high pressure cylinder, vapour
Machine intermediate pressure cylinder, steam turbine low pressure (LP) cylinder and low pressure (LP) cylinder intake valve, low pressure (LP) cylinder intake valve are arranged on steam turbine intermediate pressure cylinder and steam turbine low pressure (LP) cylinder
On communicating pipe.
Further steam turbine low pressure (LP) cylinder at least two, as more low pressure cylinder structures.
Further low pressure (LP) cylinder intake valve is electro-hydraulic switching valve, and electro-hydraulic switching valve switching speed is fast, it is possible to achieve quickly beats
Open and fast shut-off, when low pressure (LP) cylinder intake valve installation site is that multiple low pressure (LP) cylinders share communicating pipe, low pressure (LP) cylinder intake valve is arranged on
Before any one LP steam admission；During for not sharing mesolow communicating pipe, it is low that low pressure (LP) cylinder intake valve is arranged on any one
Before cylinder pressure air intake.
During experiment：Turbo-generator Set operational factor is monitored by steam turbine generator set control system in real time, once steamer is sent out
Motor set control system detects closes low pressure (LP) cylinder admission valve automatically when Turbo-generator Set load is less than setting value, steamer hair
Group of motors load is higher than automatic standard-sized sheet low pressure (LP) cylinder admission valve during setting value.
The utility model can substitute the method for operation of current unit at low load, obtain higher economic benefit.
Compared with prior art, there is some following beneficial effect using the technical solution of the utility model：
A, improve unit operation efficiency.At low load, design work of the low pressure (LP) cylinder due under throttle flow, deviateing low pressure (LP) cylinder
Condition, efficiency is low, and the utility model is run by cutting off more one low pressure (LP) cylinder of low pressure (LP) cylinder Steam Turbine, improves entering into vapour low pressure (LP) cylinder
Vapour parameter, improve low pressure (LP) cylinder operational efficiency；
B, reduce air blast friction loss.Under running on the lower load, low pressure (LP) cylinder deviates the design work of low pressure (LP) cylinder because throttle flow is few
Condition, steam what can not only do work behind low pressure (LP) cylinder by design, and can produce larger air blast friction loss, cause machinery
Work(is consumed, exhaust temperature increase；
C, energy-saving and emission-reduction, improve unit operation economy., will necessarily with the raising of unit efficiency under same operating
The intake of fuel is reduced, reduces pollutant discharge amount, reduces the pollution to environment, while is also had to raising Benefit of Unit important
Effect；
D, improve unit operation stability.The utility model reduces the exhaust temperature that unit is run at low load, has
Beneficial to the stable operation of unit.Valve, or the Steam Turbine in design are set up on current Steam Turbine mesolow cylinder communicating pipe
Mesolow sets up valve on cylinder communicating pipe；
2）The low pressure (LP) cylinder admission valve set up is closed when Turbo-generator Set load is less than a certain value, it is full during higher than the value
Open this valve；
3）Control whether low pressure (LP) cylinder corresponding to the valve enters vapour by switching low pressure (LP) cylinder admission valve, improve low pressure (LP) cylinder and enter
Vapour parameter, reduce windage loss, improve Steam Turbine efficiency.
Claims (2)
1. a kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices, including steam turbine high pressure cylinder, steam turbine intermediate pressure cylinder, steam turbine low pressure
Cylinder and low pressure (LP) cylinder intake valve, it is characterised in that：Described low pressure (LP) cylinder intake valve is arranged on steam turbine intermediate pressure cylinder and steam turbine low pressure (LP) cylinder
On communicating pipe；Described low pressure (LP) cylinder intake valve is electro-hydraulic switching valve, and low pressure (LP) cylinder intake valve installation site is that multiple low pressure (LP) cylinders share
During communicating pipe, before low pressure (LP) cylinder intake valve is arranged on any one LP steam admission；It is low during for not sharing mesolow communicating pipe
Before cylinder pressure intake valve is arranged on any one LP steam admission.
A kind of 2. more low pressure (LP) cylinder steam turbine generator set system optimization devices according to claim 1, it is characterised in that：It is described
Steam turbine low pressure (LP) cylinder at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720392644.9U CN207004588U (en) | 2017-04-14 | 2017-04-14 | A kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720392644.9U CN207004588U (en) | 2017-04-14 | 2017-04-14 | A kind of more low pressure (LP) cylinder steam turbine generator set system optimization devices |
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| CN207004588U true CN207004588U (en) | 2018-02-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060918A (en) * | 2017-04-14 | 2017-08-18 | 贵州电网有限责任公司电力科学研究院 | A kind of many low pressure (LP) cylinder steam turbine generator set system optimization device and methods |
| CN110080834A (en) * | 2019-04-04 | 2019-08-02 | 东南大学 | A kind of low pressure (LP) cylinder optimization system of coal unit Ultra-low load operation |
-
2017
- 2017-04-14 CN CN201720392644.9U patent/CN207004588U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060918A (en) * | 2017-04-14 | 2017-08-18 | 贵州电网有限责任公司电力科学研究院 | A kind of many low pressure (LP) cylinder steam turbine generator set system optimization device and methods |
| CN110080834A (en) * | 2019-04-04 | 2019-08-02 | 东南大学 | A kind of low pressure (LP) cylinder optimization system of coal unit Ultra-low load operation |
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