CN202370595U - Heating combined heat and power generating steam turbine - Google Patents
Heating combined heat and power generating steam turbine Download PDFInfo
- Publication number
- CN202370595U CN202370595U CN 201120482581 CN201120482581U CN202370595U CN 202370595 U CN202370595 U CN 202370595U CN 201120482581 CN201120482581 CN 201120482581 CN 201120482581 U CN201120482581 U CN 201120482581U CN 202370595 U CN202370595 U CN 202370595U
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- Prior art keywords
- heating
- condenser
- steam turbine
- low
- power generating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model discloses a heating combined heat and power generating steam turbine. The heating combined heat and power generating steam turbine comprises a low pressure part, wherein the low pressure part is divided into a final-stage movable blade and a final-stage static blade, and the final-stage movable blade is provided with a protective blade root; the low pressure part is connected with a condenser; circulating water of the condenser can be switched to a communicating heating pipe network; and in the aspect of heating equipment, the condenser is used for a primary heater, a communicating pipe extracts steam for secondary heating. According to the technical scheme, the heating combined heat and power generating steam turbine is high in heat supplying efficiency, high in security assurance, low in investment and easy to run and maintain.
Description
Technical field
The utility model relates to a kind of steam turbine, specifically, relates to a kind of heating co-generation turbine.
Background technique
What domestic existing high pressure series 100MW grade, ultrahigh pressure 135MW grade, ultrahigh pressure 200MW grade, subcritical 300MW grade, the medium-and-large-sized heating steam turbine of overcritical 350MW grade adopted all is the method for drawing gas; Exist heating load few, the problem that the hear rate high efficiency is low.
Conventional turbonator shafting adopts pressure, middle pressure zone low pressure, depression belt generator mode in the high pressure zone; Few for solving heating steam turbine heating load; The problem that the hear rate high efficiency is low; The solution that domestic existing is close be low pressure through press in automatic clutch band high pressure, the high pressure zone, middle pressure zone generator shaft is pattern, realizes the clutch of low pressure and high pressure, middle pressure, and then the realization condensing, draw gas, back pressure operation.
As shown in Figure 1, be that subcritical 330MW takes out type generator set system diagram with fixed attention in the existing technology.330MW takes out that with fixed attention type generator set turbine parameters is following:
Type: subcritical, three cylinders, two steam discharges, resuperheat are taken out wet cooling gas turbine with fixed attention
Model: NC330 (250)-17.75/0.4/540/540
Machine packet size: length overall 19121mm
Unit progression: high pressure I+10, middle pressure 12, low pressure 2 * 5
Heating extraction pressure: 0.4Mpa.a (0.25～0.5Mpa.a)
Heating extraction temperature: 241 ℃
Heating extraction flow: specified 550t/h, maximum 600t/h
Heating hear rate: the 5331kj/kw.h that draws gas
As shown in Figure 2, be that overcritical 350MW takes out type generator set system diagram with fixed attention in the existing technology.
350MW takes out that with fixed attention type generator set turbine parameters is following:
Type: overcritical, two-cylinder two-exhaust, resuperheat are taken out wet cooling gas turbine with fixed attention
Model: NC350 (276)-24.2/0.4/566/566
Machine packet size: length overall 16511.5mm
Unit progression: high pressure I+7, middle pressure 7, low pressure 2 * 5
Heating extraction pressure: 0.4Mpa.a (0.25～0.5Mpa.a)
Heating extraction temperature: 253 ℃
Heating extraction flow: specified 500t/h, maximum 550t/h
Heating hear rate: the 5568kj/kw.h that draws gas
The solution that domestic existing is close be low pressure through press in automatic clutch band high pressure, the high pressure zone, middle pressure zone generator shaft is pattern, realizes the clutch of low pressure and high pressure, middle pressure, and then the realization condensing, draw gas, back pressure operation.Its shortcoming is: pressure zone generator in the axle system, and axle journal transmitting torque ability is little; Low pressure is through clutch band high pressure, and axle is that torsion Vibration assurance property is poor; Thereby what cause existing medium-and-large-sized heating steam turbine employing all is the method for drawing gas, and heating load is few, and the hear rate high efficiency is low, and energy utilization rate is low.
The model utility content
The technical problem that the utility model solved provides a kind of heating co-generation turbine, and heating efficiency is high, safety assurance property strong, little investment, operation maintenance are simple.
Technological scheme is following:
A kind of heating co-generation turbine comprises low-pressure section, and the inferior last stage movable vane of the low-pressure section behind dismounting final stage moving blade and the final stage stator blade adds the protection blade root.
Further: said low-pressure section connects condenser, and condenser circulating water switches to UNICOM's heating pipe network, and aspect the heating configuration, said condenser is used for the one-level heater, and drawing gas connecting tube is used for the secondary heating.
Technique effect contrasts as follows:
The existing technology unit:
Subcritical 330MW heating extraction flow: specified 550t/h, maximum 600t/h
Subcritical 330MW heating hear rate: the 5331kj/kw.h that draws gas
Overcritical 350MW heating extraction flow: specified 500t/h, maximum 550t/h
Overcritical 350MW heating hear rate: the 5568kj/kw.h that draws gas
The utility model unit:
Subcritical 330MW heating extraction flow:
500t/h (11479t/h, 91.0 ℃ of water), add 600t/h (11479t/h, 121.8 ℃ of water) as the occasion requires
Subcritical 330MW heating draw gas hear rate: 4181kj/kw.h, add 4830kj/kw.h as the occasion requires
Overcritical 350MW heating extraction flow: 500t/h (11275t/h, 91.7 ℃ of water), add 600t/h (11275t/h, 120.7 ℃ of water) as the occasion requires
Overcritical 350MW heating draw gas hear rate: 4243kj/kw.h, add 4670kj/kw.h as the occasion requires
Can find out that from contrast the utility model technological scheme heating efficiency is high, safety assurance property strong, little investment, operation maintenance are simple.
Description of drawings
Fig. 1 is that subcritical 330MW takes out with fixed attention type generator set system diagram in the existing technology, and A, the middle and high pressure main stop valve of C----, B, the middle and high pressure modulating valve of D----, E----heat supply network stop valve, I----draw gas and regulate the butterfly valve K----bypass safety valve that draws gas;
Fig. 2 is that overcritical 350MW takes out type generator set system diagram with fixed attention in the existing technology; A, the middle and high pressure main stop valve of C----, B, the middle and high pressure modulating valve of D----, E----heat supply network stop valve, the I----adjusting butterfly valve that draws gas, the K----bypass safety valve that draws gas;
Fig. 3 is the electrical systematic drawing that adopts the heating co-generation turbine in the utility model;
The C----high pressure main stop valve, the D----septum valve is pressed main stop valve among the A----, B----reheat control valve, E----heat supply network stop valve, the I----adjusting butterfly valve that draws gas, K----safety valve.
Embodiment
The utility model technological scheme adopts disassemble or assemble exhaust stage blade method to realize the steam turbine circulating water heating and the conventional pure condensate method of operation.
Below with reference to exemplary preferred embodiments and reference drawings, the utility model technological scheme is described in detail.
As shown in Figure 3, be
system diagram that adopts the heating co-generation turbine in the utility model.
For heating improves the thermal efficiency in the heating phase, in the low-pressure section final stage of steam turbine, the dynamic and static blade of final stage is all dismantled, install the protection blade root additional at inferior last stage movable vane.Low temperature heating is the separate unit operation, does secondary with drawing gas during the high temperature heating and heats.
Steam turbine master thermodynamic system is constant.
Heating configuration aspect, condenser circulating water can switch to UNICOM's heating pipe network, adopt condenser as the one-level heater, draw gas connecting tube and heat as secondary.
Adopt the separate unit generator.
---major parameter (thermal parameter, general arrangement physical dimension)
Steam inlet condition: constant
Steam discharge parameter: 30kpa.a
Machine packet size: constant
Unit progression: low pressure reduces final stage
Heating pressure: 0.3Mpa.a (0.25～0.5Mpa.a)
Heating temperature: constant basically
The heating flow:
Sub type NB pattern 500t/h (11479t/h, 91.0 ℃ of water)
Add 600t/h (11479t/h, 121.8 ℃ of water) as the occasion requires
SC type NB pattern 500t/h (11275t/h, 91.7 ℃ of water)
Add 600t/h (11275t/h, 120.7 ℃ of water) as the occasion requires
The heating hear rate:
Sub type NB pattern 4181kj/kw.h
SC type NB pattern 4243kj/kw.h
Heating power:
Sub type NB pattern 265.8MW
SC type NB pattern 288.1MW
Non-heating period: each thermal parameter of unit is constant.
---body structure changes (each axle journal, fore bearing case internal sleeve, connecting tube)
The Sub type
Constant.
The SC type
Constant.
---subsystem (main oil pump, barring gear)
Lubricating oil system: constant.
Jacking oil system: constant.
Sealing system: constant.
Draining system: constant.
---subsidiary engine (condenser-circulating water pump configuration)
Vapour condenser changes circulating water heating mode, stoppages in transit such as circulating water pump into.
---control-protection
Increase B form operation control;
Monitoring and protection increase to two kinds of back pressure protection definite values.
---the start and stop operation
Can be fully according to taking out unit operation mode operation with fixed attention.
Claims (2)
1. a heating co-generation turbine comprises low-pressure section, it is characterized in that: the inferior last stage movable vane of the low-pressure section behind dismounting final stage moving blade and the final stage stator blade adds the protection blade root.
2. heating co-generation turbine as claimed in claim 1; It is characterized in that: said low-pressure section connects condenser, and condenser circulating water switches to UNICOM's heating pipe network, aspect the heating configuration; Said condenser is used for the one-level heater, draws gas connecting tube to be used for the secondary heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120482581 CN202370595U (en) | 2011-11-28 | 2011-11-28 | Heating combined heat and power generating steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120482581 CN202370595U (en) | 2011-11-28 | 2011-11-28 | Heating combined heat and power generating steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370595U true CN202370595U (en) | 2012-08-08 |
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ID=46594301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120482581 Expired - Fee Related CN202370595U (en) | 2011-11-28 | 2011-11-28 | Heating combined heat and power generating steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434222A (en) * | 2011-11-28 | 2012-05-02 | 北京北重汽轮电机有限责任公司 | Cogeneration turbine for heating and supplying heat |
-
2011
- 2011-11-28 CN CN 201120482581 patent/CN202370595U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434222A (en) * | 2011-11-28 | 2012-05-02 | 北京北重汽轮电机有限责任公司 | Cogeneration turbine for heating and supplying heat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20201128 |