CN107630722A - A kind of feed pump turbine - Google Patents
A kind of feed pump turbine Download PDFInfo
- Publication number
- CN107630722A CN107630722A CN201710776745.0A CN201710776745A CN107630722A CN 107630722 A CN107630722 A CN 107630722A CN 201710776745 A CN201710776745 A CN 201710776745A CN 107630722 A CN107630722 A CN 107630722A
- Authority
- CN
- China
- Prior art keywords
- rotor
- bearing
- feed pump
- low
- journal bearing
- 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
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The present invention provides a kind of WK7125 types feed pump turbine,It includes feed pump and reaction turbine,The steam turbine includes rotor (1),Middle cylinder (2),Two halves inner casing (3),Exhaust casing (4),Guide blade carrier (5),Preceding bearing (8) and rear support (9),Middle cylinder (2) top is provided with adjusting air valve (10),Preceding bearing (8) is provided with preceding journal bearing (11) and thrust bearing (13),Rear support (9) is provided with rear journal bearing (12),Rotor (1) is arranged on middle cylinder (2),Two halves inner casing (3),In guide blade carrier (5),And supported by preceding journal bearing (11) and rear journal bearing (12),And rotor (1) is to limit the axial float of rotor (1) by thrust bearing (13),Rotor (1) is provided with medium pressure grade group (6) and low-pressure stage group (7),Low-pressure last stage blade length 550mm in the low-pressure stage group (7),Leaf top diameter 2060mm,Leaving area is 2.5m2,Complete machine leaving area is 2X2.5m2；The leaving area of exhaust casing (4) is 6.08 square metres, and the leaving area of exhaust casing complete machine is 2X6.08 square metres.The present invention can meet low cooling water inlet, low exhaust steam pressure applying working condition, and and can at utmost reduces manufacture difficulty, manufacturing cost.
Description
Technical field
Patent of the present invention is related to the industrial steam turbine in large feedwater pump device field, especially a kind of to be applicable low cooling
Water, low exhaust steam pressure feedwater pump installation reaction turbine.
Background technology
Feed pump turbine is one of important component of power station circulation system, particularly the machine in high parameter Large Copacity
In group, its safe and reliable operation, the operation of whole power station equipment is directly affected.
Feed pump turbine is the power drive device into kinetic energy by the energy conversion included in steam, and it comprises peace
Stator blade on guide blade carrier and the movable vane piece on rotor.When steam turbine operation, the high steam warp of expansion
Cross stator blade and some levels that movable vane piece is alternately arranged rotate rotor, the pressure in steam turbine is successive as steam passes through
Stage and constantly reduce, discharged finally by exhaust casing.
The existing Multiple Type of my company's feed pump product：WK71/2.1, WK71/80, WK71/90, it is this supporting steam turbine
The leaving area design that targetedly design of unit exhaust steam pressure, efficiency are optimal is needed, large-scale power generation project is reduced to reach
The purpose of energy consumption.
Therefore, it is necessary to according to feedwater pump work cooling water temperature parameter, unit exhaust steam pressure numerical value, design a blade,
Row's cylinder structure and leaving area can meet the steam turbine of above-mentioned requirements.
The content of the invention
The purpose of patent of the present invention is to solve the deficiency of above-mentioned technology, there is provided one kind can meet it is low cooling water inlet,
Low exhaust steam pressure applying working condition, and can at utmost reduce the feedwater pump installation reactionary style steamer of manufacture difficulty, manufacturing cost
Machine.
In order to achieve the above object, a kind of feed pump turbine designed by patent of the present invention, it is including feed pump and instead
Dynamic formula steam turbine, the steam turbine include rotor, middle cylinder, two halves inner casing, exhaust casing, guide blade carrier, preceding bearing and rear support, middle cylinder
Top is provided with adjusting air valve, and preceding bearing is provided with preceding journal bearing and thrust bearing, and rear support is provided with rear journal bearing, turns
Son supports in middle cylinder, two halves inner casing, guide blade carrier, and by preceding journal bearing and rear journal bearing, and rotor is logical
Thrust bearing is crossed to limit the axial float of rotor, rotor is provided with medium pressure grade group and low-pressure stage group, it is characterized in that described low
Low-pressure last stage blade length 550mm in group of arbitrarily downgrading, leaf top diameter 2060 mm, leaving area 2.5m2, complete machine leaving area
For 2X2.5m2；The leaving area of exhaust casing is 6.08 square metres, and the leaving area of complete machine is 2X6.08 square metres.
The turbine rotor range of speeds 2500-5100RPM, the minimum exhaust steam pressure 4.5kPa of steam turbine.
Adjustment circle is respectively equipped with the preceding journal bearing and rear journal bearing, conveniently adjusting bearing when installing bearing arrives
The final position needed.
Preferably, medium pressure grade group and low-pressure stage group are arranged symmetrically along middle cylinder admission end both sides toward exhaust casing direction,
Medium pressure grade group is located between rotor and two halves inner casing, guide blade carrier, and low-pressure stage group is located between rotor and exhaust casing, is so set
Meter is that can have enthalpy drop in the movable vane of medium pressure grade group because of steam, and the pressure difference between movable vane steam admission side and steam output side passes through movable vane
Act on the axial thrust forward to rotor, so as to balance that rotor is subject to together with the dummy piston on thrust bearing, rotor to
Axial thrust afterwards, impact and rub is avoided, so that stable operation of unit.
Preferably, the deflector structure being located inside exhaust casing connects with guide blade carrier outlet flow, make steam discharge process
It is more smooth, the loss that vapor vortex is brought can be so reduced, and then improve the efficiency of complete machine.
Preferably, rotor is Barrate type, preceding seat end surface is provided with electric barring equipment, can be lazy in compressor emergency shutdown
When walking, jiggering is carried out to rotor, bending is produced by thermal stress to prevent rotation stop.
According to the low cooling water temperature parameter of feedwater pump work, and in order to reduce unit exhaust steam pressure numerical value as far as possible, it is necessary to
The steam turbine of above-mentioned requirements can be met by designing a blade, steam discharge cylinder structure and leaving area, therefore exploitation devises final stage leaf
Piece parameter is：Length reaches 550mm, and leaf top diameter reaches 2060mm, ensures the ㎡ of leaving area 2.5, exhaust casing leaving area
6.08 square metre.The present invention has the following advantages that：
1st, the minimum exhaust steam pressure of current feed pump product declared working condition can reach 5.6kPa, far from reaching large-scale hair
Requirement of the electric project owner to exhaust steam pressure, minimum exhaust steam pressure can reach 4.5kPa, greatly reduce energy consumption.
2nd, this technology goes for range of speeds 2500-5100RPM, and unit operation is stable, greatly reduces vortex strip
The loss come, and improve the efficiency of complete machine.
3rd, feed pump turbine structure is improved, effectively reduces the heat consumption of filling operating mode unit, adapt to market
Growth requirement.
4th, this technology considers the ㎡ of leaving area 2.5, does not improve steam discharge by increasing the parameters such as length of blade simply
Area, this can cause manufacturing process difficulty, manufacturing cost to be multiplied, but according to manufacturing cost, technique and leaving area energy
The optimal result reached sets leaving area.
Brief description of the drawings
Fig. 1 is example structure schematic diagram.
In figure：Rotor 1, middle cylinder 2, two halves inner casing 3, exhaust casing 4, guide blade carrier 5, medium pressure grade group 6, low-pressure stage group 7, preceding branch
Seat 8, rear support 9, servo valve 10, preceding journal bearing 11, rear journal bearing 12, thrust bearing 13, adjustment circle 14, admission end
15th, electric barring 16.
Embodiment
Patent of the present invention is further described below by embodiment combination accompanying drawing.
As shown in figure 1, a kind of feed pump turbine of the present embodiment description, WK71/2.5 is a diameter of into vapour part rotor
700MM, the double split flow condensing turbine of the square meter of leaving area 2.5.It includes rotor 1, middle cylinder 2, two halves inner casing 3, exhaust casing
4th, guide blade carrier 5, preceding bearing 8 and rear support 9, described feedwater pump installation are with the complete machine leaving area of reaction turbine
2.5m2, the top of middle cylinder 2 is provided with servo valve 10, and preceding bearing 8 is provided with preceding journal bearing 11 and thrust bearing 13, rear support 9
Rear journal bearing 12 is provided with, adjustment circle 14 is respectively equipped with preceding journal bearing 11 and rear journal bearing 12, during rotor 1 is arranged on
Cylinder 2, two halves inner casing 3, in guide blade carrier 5, and supported by preceding journal bearing 11 and rear journal bearing 12, and rotor 1 is to pass through
Thrust bearing 13 limits the axial float of rotor 1, and rotor 1 is provided with medium pressure grade group 6 and low-pressure stage group 7, the He of medium pressure grade group 6
Low-pressure stage group 7 is arranged symmetrically along the admission end 15 of middle cylinder 2 toward the direction of both sides exhaust casing 4, and medium pressure grade group 6 is to be located at the He of rotor 1
Between two halves inner casing 3, guide blade carrier 5, low-pressure stage group 7 is located between rotor 1 and exhaust casing 4, and the outlet of low-pressure stage group 7 and row
Deflector in cylinder 4 connects, and the steam come out from low-pressure stage group 7 can be discharged along deflector from exhaust casing 4, and rotor 1 is whole
Barrate type is forged, and rotor 1 is provided with electric barring equipment in the preceding endface position of bearing 8, it is right during for compressor emergency shutdown coasting operation
Rotor carries out jiggering.
This product course of work is：Initial steam in feedwater pump installation reaction turbine after servo valve by being divided to two
Side enters two halves inner casing, then by the medium pressure grade group expansion work in two halves inner casing and guide blade carrier, next flows into low pressure
Level group continues expansion work, is discharged finally by exhaust casing.
Low-pressure last stage blade length 550mm in low-pressure stage group 7, leaf top diameter 2060mm, leaving area 2.5m2, gives
Pumping plant is 2X2.5m2 with the complete machine leaving area of reaction turbine；The leaving area of exhaust casing 4 is 6.08 square metres,
Due to the unit double split flow, left and right sides leaving area is 2X2.5 square meters.The leaving area for arranging cylinder is 2X6.08 square metres.
The turbine rotor range of speeds 2500-5100RPM, the minimum exhaust steam pressure 4.5kPa of steam turbine.
Adjustment circle 14 is respectively equipped with the preceding journal bearing 11 and rear journal bearing 12, adjustment circle is in installation bearing when side
Just bearing is adjusted to the final position needed.
Rotor is Barrate type, and preceding seat end surface is provided with electric barring equipment, can be in compressor emergency shutdown coasting operation, to turning
Son carries out jiggering, and bending is produced by thermal stress to prevent rotation stop.
Described adjusting air valve 10 is located at the top of middle cylinder 2, and adjusting air valve 10 is without nozzle arrangements, the venthole of adjusting air valve 10
Directly it is connected in two halves inner casing.
Claims (7)
1. a kind of WK7125 types feed pump turbine, it includes feed pump and reaction turbine, and the steam turbine includes rotor
(1), middle cylinder (2), two halves inner casing (3), exhaust casing (4), guide blade carrier (5), preceding bearing (8) and rear support (9), in middle cylinder (2)
Portion is provided with adjusting air valve (10), and preceding bearing (8) is provided with preceding journal bearing (11) and thrust bearing (13), on rear support (9)
Provided with rear journal bearing (12), rotor (1) passes through preceding footpath in middle cylinder (2), two halves inner casing (3), guide blade carrier (5)
Supported to bearing (11) and rear journal bearing (12), and rotor (1) is to limit the axial direction of rotor (1) by thrust bearing (13)
Play, rotor (1) is provided with medium pressure grade group (6) and low-pressure stage group (7), it is characterized in that the low pressure in the low-pressure stage group (7)
Final blade length 550mm, leaf top diameter 2060mm, leaving area 2.5m2, complete machine leaving area are 2X2.5m2；Exhaust casing
(4) leaving area is 6.08 square metres, and the leaving area of exhaust casing complete machine is 2X6.08 square metres.
2. a kind of WK7125 types feed pump turbine according to claim 1, it is characterized in that,
The turbine rotor range of speeds 2500-5100RPM, the minimum exhaust steam pressure 4.5kPa of steam turbine.
3. a kind of WK7125 types feed pump turbine according to claim 1, it is characterized in that, the preceding journal bearing (11)
(14) are enclosed with adjustment is respectively equipped with rear journal bearing (12).
4. a kind of WK7125 types feed pump turbine according to claim 1, it is characterized in that, described medium pressure grade group (6)
It is arranged symmetrically with low-pressure stage group (7) along middle cylinder (2) admission end (15) toward both sides exhaust casing (4) direction, medium pressure grade group (6) arrangement
In two halves inner casing (3) and guide blade carrier (5), low-pressure stage group (7) is arranged in exhaust casing (4).
5. a kind of WK7125 types feed pump turbine according to claim 1, it is characterized in that, described adjusting air valve (10)
Middle cylinder (2) top is located at, adjusting air valve (10) is directly to be connected to two halves inner casing without nozzle arrangements, adjusting air valve (10) venthole
In.
6. a kind of WK7125 types feed pump turbine according to claim 1, it is characterized in that, described rotor (1) is whole
Barrate type is forged, rotor (1) head is provided with electric barring equipment (16).
7. a kind of WK7125 types feed pump turbine according to claim 1, it is characterized in that, it is located at leading inside exhaust casing
Flowing plate (18) is arcuate structure, and formation connects with guide blade carrier outlet flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776745.0A CN107630722A (en) | 2017-09-01 | 2017-09-01 | A kind of feed pump turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776745.0A CN107630722A (en) | 2017-09-01 | 2017-09-01 | A kind of feed pump turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107630722A true CN107630722A (en) | 2018-01-26 |
Family
ID=61100657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710776745.0A Pending CN107630722A (en) | 2017-09-01 | 2017-09-01 | A kind of feed pump turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630722A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963211A (en) * | 2021-03-26 | 2021-06-15 | 华能江阴燃机热电有限责任公司 | Steam turbine of cogeneration system |
| CN113864006A (en) * | 2020-06-30 | 2021-12-31 | 上海电气电站设备有限公司 | Steam turbine expansion sliding pin system and steam turbine |
| CN114704338A (en) * | 2022-03-09 | 2022-07-05 | 中国船舶重工集团公司第七0三研究所 | Vertical assembling and positioning structure for moving and static parts of steam turbine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608404A (en) * | 1983-06-28 | 1985-01-17 | Toshiba Corp | Low pressure casing of steam turbine |
| CN203374329U (en) * | 2013-05-24 | 2014-01-01 | 华电国际电力股份有限公司山东分公司 | Low pressure through-flow structure |
| CN106089307A (en) * | 2016-07-29 | 2016-11-09 | 杭州汽轮机股份有限公司 | A kind of low parameter big flow double split flow back pressure turbine |
| CN206000578U (en) * | 2016-08-09 | 2017-03-08 | 杭州汽轮机股份有限公司 | A kind of final stage moving blade of feed pump industrial steam turbine |
-
2017
- 2017-09-01 CN CN201710776745.0A patent/CN107630722A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608404A (en) * | 1983-06-28 | 1985-01-17 | Toshiba Corp | Low pressure casing of steam turbine |
| CN203374329U (en) * | 2013-05-24 | 2014-01-01 | 华电国际电力股份有限公司山东分公司 | Low pressure through-flow structure |
| CN106089307A (en) * | 2016-07-29 | 2016-11-09 | 杭州汽轮机股份有限公司 | A kind of low parameter big flow double split flow back pressure turbine |
| CN206000578U (en) * | 2016-08-09 | 2017-03-08 | 杭州汽轮机股份有限公司 | A kind of final stage moving blade of feed pump industrial steam turbine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864006A (en) * | 2020-06-30 | 2021-12-31 | 上海电气电站设备有限公司 | Steam turbine expansion sliding pin system and steam turbine |
| CN112963211A (en) * | 2021-03-26 | 2021-06-15 | 华能江阴燃机热电有限责任公司 | Steam turbine of cogeneration system |
| CN114704338A (en) * | 2022-03-09 | 2022-07-05 | 中国船舶重工集团公司第七0三研究所 | Vertical assembling and positioning structure for moving and static parts of steam turbine |
| CN114704338B (en) * | 2022-03-09 | 2023-12-08 | 中国船舶重工集团公司第七0三研究所 | Vertical assembly positioning structure of dynamic and static parts of steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101684748B (en) | Integrated gas turbine exhaust diffuser and heat recovery steam generation system | |
| JP5134090B2 (en) | Power plant and power plant operating method | |
| EP2584157B1 (en) | Heat recovery steam generator and methods of coupling same to a combined cycle power plant | |
| JP5479192B2 (en) | Steam turbine plant | |
| CN107630722A (en) | A kind of feed pump turbine | |
| JP2012107611A (en) | Steam turbine plant | |
| JP4818391B2 (en) | Steam turbine plant and operation method thereof | |
| CN102444426B (en) | Method of modifying a steam turbine | |
| EP3289216B1 (en) | A system for generating electrical power from low temperature steam | |
| CN102926825A (en) | Quick-start steam turbine set and operation process thereof | |
| US20090288415A1 (en) | Method for Warming-Up a Steam Turbine | |
| JP5615150B2 (en) | Nuclear power plant and method of operating nuclear power plant | |
| JP4488787B2 (en) | Steam turbine plant and method for cooling intermediate pressure turbine thereof | |
| CN202937317U (en) | Fast starting turboset | |
| JP2011220163A (en) | Steam turbine plant | |
| KR102101166B1 (en) | Reheating of working fluid inside turbine system for power generation | |
| JP5183603B2 (en) | Power plant and operation method thereof | |
| JP6257946B2 (en) | Geothermal turbine | |
| CN215804745U (en) | Variable-rotation-speed condensing steam turbine operating under double back pressures | |
| CN108204257B (en) | High-parameter nuclear turbine without configuration steam-water separation reheater | |
| Barinberg et al. | New draft projects of steam turbines for combined-cycle plants | |
| KR101704306B1 (en) | Steam turbine system for recycling wasted heat using radial turbine | |
| CN203515691U (en) | Regulating wheel and industrial steam turbine with same | |
| RU2233381C1 (en) | Steam turbine with end seals in form of additional turbine stages with regenerating steam extractions | |
| CN102906376B (en) | Combined cycle power generator |
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: 20180126 |