CN108331624A - A method of back pressure turbine is transform as by condensing turbine - Google Patents
A method of back pressure turbine is transform as by condensing turbine Download PDFInfo
- Publication number
- CN108331624A CN108331624A CN201810140350.6A CN201810140350A CN108331624A CN 108331624 A CN108331624 A CN 108331624A CN 201810140350 A CN201810140350 A CN 201810140350A CN 108331624 A CN108331624 A CN 108331624A
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- Prior art keywords
- cylinder
- low pressure
- pressure
- rotor
- turbine
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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
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of method transforming back pressure turbine as by condensing turbine, the condensing turbine includes the high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and its condenser of sequentially unicom, and rotor is equipped in high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder；The method includes following technical measures：The rotor of condensing turbine is transformed, it is optical axis rotor that the rotor, which is located at the processing of the part in low pressure (LP) cylinder,；The partition board of the low pressure (LP) cylinder is all removed, and original spraying temperature lowering apparatus in low pressure (LP) cylinder is retained；It is new to set low-pressure end steam seal ring, adjustment low pressure (LP) cylinder labyrinth clearance；Cancel low pressure (LP) cylinder steam cooling system, intermediate pressure cylinder steam discharge is all led into heat supply pipeline and is connected to heat supply with heat user.The present invention directly utilizes old original turbine rotor, transform low pressure processing as optical axis rotor reduction improvement cost and shortens the construction period；Cancel the low pressure (LP) cylinder steam cooling system being generally arranged in routine adaptations, simplifies system setting.
Description
Technical field
The present invention relates to thermal power generating technology fields, and in particular to one kind transforming back pressure type steam turbine as by condensing turbine
The method of machine.
Background technology
Current Steam Turbine in Fire Power Plant back pressure transformation mainly uses the method for directly replacing the original rotor of steam turbine,
Low pressure rotor is directly changed to optical axis rotor；After being transformed design to steam turbine mesolow cylinder communicating pipe again, one is drawn
Then heat supply pipeline introduces steam into heat supply network heat-exchanger rig or heat user, to increase unit heat capacity.Optical axis heat supply is transformed
Afterwards, it due to the optical axis frictional heating of low pressure gas in the jar and rotation, needs to be passed through special steam it is cooled down, ensure machine
The safety of group；But it needs simultaneously from an intermediate pressure cylinder piece jet chimney of extraction that steam is cold by low pressure (LP) cylinder steam by communicating pipe
But system（Existing reducing-and-cooling plant）After access low pressure (LP) cylinder, as low pressure (LP) cylinder steam cooling gas resources, for low pressure rotor
It is cooling, but this part intermediate pressure cylinder steam is only discharged into low pressure (LP) cylinder without externally doing work, while increased reducing-and-cooling plant also disappears
Effective steam energy has been consumed, the complexity of system is increased, has also increased the inconvenience of arrangement.
Invention content
Deficiency in order to solve the above problem provides a kind of method transforming back pressure turbine as by condensing turbine,
It can not only increase unit heat capacity, ensure the requirement for meeting external heat supply, while solve more to renew rotor cost at present excessively high
And the problem that low pressure rotor cooling system is more complex.
The purpose of the present invention is what is realized in the following manner：
A method of back pressure turbine being transform as by condensing turbine, the condensing turbine includes sequentially unicom
High pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and its condenser, be equipped with rotor in high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder；The method
Including following technical measures：
The rotor of condensing turbine is transformed, it is optical axis rotor that the rotor, which is located at the processing of the part in low pressure (LP) cylinder,；
The partition board of the low pressure (LP) cylinder is all removed, and original spraying temperature lowering apparatus in low pressure (LP) cylinder is retained；
It is new to set low-pressure end steam seal ring, adjustment low pressure (LP) cylinder labyrinth clearance；
Cancel low pressure (LP) cylinder steam cooling system, intermediate pressure cylinder steam discharge is all led into heat supply pipeline and is connected to heat supply with heat user.
Safety valve, extraction check valve, quick closing valve regulating valve and electric butterfly valve are equipped on the heat supply pipeline successively.
Beneficial effects of the present invention：1, old original turbine rotor is directly utilized, transform low pressure processing as optical axis rotor,
On-bladed assembles i.e. on rotor, only transmits torque, reduces improvement cost and shortens the construction period.
2, cancel the low pressure (LP) cylinder steam cooling system being generally arranged in routine adaptations, simplify system setting, low pressure (LP) cylinder is not done
Work(is back pressure heat supply, and intermediate pressure cylinder steam discharge fully enters heat supply pipeline, and the thermal efficiency is high.
Description of the drawings
Fig. 1 is system schematic.
Wherein 1 heat supply pipeline, 2 safety valves, 3 extraction check valves, 4 quick closing valve regulating valves, 5 electric butterfly valves.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
A method of back pressure turbine being transform as by condensing turbine, the condensing turbine includes sequentially joining
Logical high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and its condenser, rotor is equipped in high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder；It is described
Method includes following technical measures：
The rotor of condensing turbine is transformed, it is optical axis rotor that the rotor, which is located at the processing of the part in low pressure (LP) cylinder,；
The partition board of the low pressure (LP) cylinder is all removed, and retains original spraying temperature lowering apparatus in low pressure (LP) cylinder, and properly increase low pressure (LP) cylinder
The alarming value of temperature ensures stable and safe；
New to set low-pressure end steam seal ring, adjustment low pressure (LP) cylinder labyrinth clearance avoids rotor and steam seal ring from touching mill；
Cancel low pressure (LP) cylinder steam cooling system, intermediate pressure cylinder steam discharge is all led into heat supply pipeline 1 and is connected to heat supply with heat user.
Safety valve 2, extraction check valve 3, quick closing valve regulating valve 4 and electric butterfly valve 5 are equipped on the heat supply pipeline successively.
It is optical axis rotor by the direct working process of Low Pressure Steam Turbine, removes the blade on low pressure (LP) cylinder inner rotor portion,
And low pressure (LP) cylinder partition board is all removed, spraying temperature lowering apparatus in low pressure is retained and properly increases low pressure (LP) cylinder temperature alarming value, it ensures
It is stable and safe, cooling water spray control logic is adjusted, when low pressure (LP) cylinder temperature is more than alarming value, in low pressure (LP) cylinder
Spraying temperature lowering apparatus carries out spray cooling.Intermediate pressure cylinder steam discharge is led into heat supply network heat-exchanger rig or heat user, low pressure (LP) cylinder is original into vapour
Mouth is blocked.Temperature increases before low pressure (LP) cylinder temperature is relatively transformed, and low pressure (LP) cylinder increases relative to the upward swell increment of firing floor, needs
It is new to set low-pressure end steam seal ring, adjust labyrinth clearance（Turbine shaft seal）, rotor is avoided to touch mill with steam seal ring.Cancel former low pressure
Special low pressure (LP) cylinder cooling device is no longer arranged in cylinder steam cooling system, simplifies system setting.
Shafting characteristic before and after Transformation of Unit is calculated, each bearing load of unit is calculated, and according to calculating
As a result bearing is transformed or is replaced.
After being drawn intermediate pressure cylinder steam discharge by heat supply pipeline, safety valve, extraction check valve, quick closing valve are set on pipeline and adjusted
Then steam is led to heat supply network heat-exchanger rig or heat user by valve and electric butterfly valve.
Present invention is generally directed to the transformations of the back pressure turbine of original Steam Turbine in Fire Power Plant group, and steam turbine low-pressure is turned
Sub directly working process is optical axis rotor, without the turbine rotor more renewed, reduces improvement cost；By to low in steam turbine
After cylinder pressure communicating pipe redesigns, a heat supply pipeline is drawn, heat supply network heat-exchanger rig or heat user are then introduced steam into, to
Increase unit heat capacity.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of not departing from general idea of the present invention, several changes and improvements can also be made, these should also be considered as the present invention's
Protection domain.
Claims (2)
1. a kind of method transforming back pressure turbine as by condensing turbine, the condensing turbine includes sequentially unicom
High pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and its condenser, be equipped with rotor in high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder；Its feature
It is：The method includes following technical measures：
The rotor of condensing turbine is transformed, it is optical axis rotor that the rotor, which is located at the processing of the part in low pressure (LP) cylinder,；
The partition board of the low pressure (LP) cylinder is all removed, and original spraying temperature lowering apparatus in low pressure (LP) cylinder is retained；
It is new to set low-pressure end steam seal ring, adjustment low pressure (LP) cylinder labyrinth clearance；
Cancel low pressure (LP) cylinder steam cooling system, intermediate pressure cylinder steam discharge is all led into heat supply pipeline and is connected to heat supply with heat user.
2. the method for transforming back pressure turbine as by condensing turbine as described in claim 1, it is characterised in that：It is described
Heat supply pipeline on successively be equipped with safety valve, extraction check valve, quick closing valve regulating valve and electric butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810140350.6A CN108331624A (en) | 2018-02-11 | 2018-02-11 | A method of back pressure turbine is transform as by condensing turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810140350.6A CN108331624A (en) | 2018-02-11 | 2018-02-11 | A method of back pressure turbine is transform as by condensing turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108331624A true CN108331624A (en) | 2018-07-27 |
Family
ID=62929238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810140350.6A Pending CN108331624A (en) | 2018-02-11 | 2018-02-11 | A method of back pressure turbine is transform as by condensing turbine |
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| CN (1) | CN108331624A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404074A (en) * | 2018-11-05 | 2019-03-01 | 哈尔滨汽轮机厂有限责任公司 | A kind of overcritical optical axis heat supply transformation steam turbine of 350MW |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205101052U (en) * | 2015-10-29 | 2016-03-23 | 华电郑州机械设计研究院有限公司 | Novel heating system of thermal power plant |
| CN206267900U (en) * | 2016-11-22 | 2017-06-20 | 华电能源股份有限公司富拉尔基发电厂 | A kind of steam turbine low-pressure optical axis heat supply steam bleeding system |
| CN106979041A (en) * | 2017-04-01 | 2017-07-25 | 祝凤娟 | A kind of turbine low pressure cylinder high vacuum takes off the remodeling method that cylinder runs thermoelectricity decoupled system |
-
2018
- 2018-02-11 CN CN201810140350.6A patent/CN108331624A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205101052U (en) * | 2015-10-29 | 2016-03-23 | 华电郑州机械设计研究院有限公司 | Novel heating system of thermal power plant |
| CN206267900U (en) * | 2016-11-22 | 2017-06-20 | 华电能源股份有限公司富拉尔基发电厂 | A kind of steam turbine low-pressure optical axis heat supply steam bleeding system |
| CN106979041A (en) * | 2017-04-01 | 2017-07-25 | 祝凤娟 | A kind of turbine low pressure cylinder high vacuum takes off the remodeling method that cylinder runs thermoelectricity decoupled system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404074A (en) * | 2018-11-05 | 2019-03-01 | 哈尔滨汽轮机厂有限责任公司 | A kind of overcritical optical axis heat supply transformation steam turbine of 350MW |
| CN109404074B (en) * | 2018-11-05 | 2023-10-10 | 哈尔滨汽轮机厂有限责任公司 | 350MW supercritical optical axis heat supply transformation steam turbine |
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