CN109404074A - A kind of overcritical optical axis heat supply transformation steam turbine of 350MW - Google Patents
A kind of overcritical optical axis heat supply transformation steam turbine of 350MW Download PDFInfo
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- CN109404074A CN109404074A CN201811309103.0A CN201811309103A CN109404074A CN 109404074 A CN109404074 A CN 109404074A CN 201811309103 A CN201811309103 A CN 201811309103A CN 109404074 A CN109404074 A CN 109404074A
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- steam
- low pressure
- heat supply
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- optical axis
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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
- 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
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of overcritical optical axis heat supply transformation steam turbine of 350MW, is related to a kind of steam turbine, in order to solve the problems, such as that existing heating steam extraction is insufficient.Turbine body of the invention is by adjusting end to be followed successively by high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder to electric end；It is equipped with low pressure optical axis heat supply rotor in low pressure (LP) cylinder, is equipped with middle pressure rotor in intermediate pressure cylinder；Low pressure optical axis heat supply rotor is attached with middle pressure rotor using tune end coupling bolt；Low pressure optical axis heat supply rotor is attached with generator amature using electric end coupling bolt；Heating steam extraction short tube and attachment are connected to middle pressure steam ports to replace mesolow communicating pipe；The cooling steam connection of low pressure is connected to low pressure admission mouth；Heating steam extraction short tube and the steam of attachment discharge are completely used for heat supply network heating；Draw some vapor from the gland steam exhauster of the feed pump turbine, is connected into vapour adapter tube into the cooling low pressure optical axis heat supply rotor of low pressure (LP) cylinder by cooling steam pipeline with low pressure cooling steam.It has the beneficial effect that and meets real heating demand.
Description
Technical field
The present invention relates to a kind of steam turbines.
Background technique
At present due to the increase of Winter heat supply area, need to increase heat capacity, and need bigger steam extraction amount, simple
It leans against punching steam extraction or high back pressure transformation on steam turbine extraction line and has been unable to satisfy demand.
Summary of the invention
The purpose of the present invention is to solve the problems of existing heating steam extraction deficiency, and it is overcritical to propose a kind of 350MW
Steam turbine is transformed in optical axis heat supply.
Steam turbine is transformed in a kind of overcritical optical axis heat supply of 350MW of the invention, which includes steam turbine sheet
Body；
The turbine body is by adjusting end to be followed successively by high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder to electric end；
It is equipped with low pressure optical axis heat supply rotor in low pressure (LP) cylinder, is equipped with middle pressure rotor in intermediate pressure cylinder；
The steam turbine further includes heating steam extraction short tube and the cooling steam connection of attachment, low pressure, adjusts end coupling bolt, electric end
Coupling bolt and feed pump turbine；
The low pressure optical axis heat supply rotor is attached with middle pressure rotor using tune end coupling bolt；
The low pressure optical axis heat supply rotor is attached with generator amature using electric end coupling bolt；
Heating steam extraction short tube and attachment are connected to middle pressure steam ports to replace mesolow communicating pipe；Low pressure cools down steam connection
It is connected to low pressure admission mouth；
Heating steam extraction short tube and the steam of attachment discharge are completely used for heat supply network heating；
Draw some vapor from the gland steam exhauster of the feed pump turbine, by cooling steam pipeline and low pressure cooling steam into
Vapour adapter tube is connected into the cooling low pressure optical axis heat supply rotor of low pressure (LP) cylinder.
The beneficial effects of the invention are as follows the steam turbine be 350MW is overcritical, a resuperheat, single shaft, three cylinders, two steam discharge,
Black soy sauce, condensing turbine；Unit parameter: initial steam pressure 24.2MPa.a, 566 DEG C of initial steam temperature, 566 DEG C of reheat steam temperature,
Heating extraction pressure 0.4MPa.a, maximum heating steam extraction amount 797.11t/h；High pressure is through-flow, before, during and after bearing housing and bearing,
Valve location, each pipe interface position etc. are constant, and middle row's steam is fully entered heat supply network heat supply, real heat supply is met and wants
It asks；Low pressure (LP) cylinder cooling steam comes from feed pump turbine steam discharge, and parameter is moderate, and without carrying out pressure and temperature reducing, cooling effect is obvious,
Unit cost is also reduced simultaneously.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the overcritical optical axis heat supply transformation steam turbine of 350MW described in specific embodiment one
Figure；
Fig. 2 is the connection relationship diagram of specific embodiment a kind of feed pump turbine and low pressure (LP) cylinder；Wherein, 18 be solidifying
Vapour device, 19 be low pressure (LP) cylinder into vapour center line；
Fig. 3 is the structural schematic diagram of heating steam extraction short tube and attachment in specific embodiment two；
Fig. 4 is the A direction view of Fig. 3；
Fig. 5 is the B-B direction cross-sectional view of Fig. 4.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1 and Fig. 2, a kind of 350MW described in present embodiment is super
Steam turbine is transformed in critical optical axis heat supply, which includes turbine body；
The turbine body is by adjusting end to be followed successively by high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder to electric end；
It is equipped with low pressure optical axis heat supply rotor 3 in low pressure (LP) cylinder, is equipped with middle pressure rotor 6 in intermediate pressure cylinder；
The steam turbine further include heating steam extraction short tube and attachment 1, the cooling steam connection 2 of low pressure, adjust end coupling bolt 4,
Electric end coupling bolt 5 and feed pump turbine 17；
The low pressure optical axis heat supply rotor 3 is attached with middle pressure rotor 6 using tune end coupling bolt 4；
The low pressure optical axis heat supply rotor 3 is attached with generator amature using electric end coupling bolt 5；
Heating steam extraction short tube and attachment 1 are connected to middle pressure steam ports to replace mesolow communicating pipe；Low pressure cooling steam connects
Pipe 2 is connected to low pressure admission mouth；
The steam that heating steam extraction short tube and attachment 1 are discharged is completely used for heat supply network heating；
Draw some vapor from the gland steam exhauster of the feed pump turbine 17, passes through cooling steam pipeline and low pressure cooling steam
It is connected into vapour adapter tube into the cooling low pressure optical axis heat supply rotor of low pressure (LP) cylinder.
In the present embodiment, high, the middle pressure of original machine group it is through-flow, before, during and after bearing housing and bearing, valve location, each pipe
Road interface position etc. is constant, only carries out optical axis transformation to low pressure flow passage；Steam turbine described in improved present embodiment is
350MW is overcritical, a resuperheat, single shaft, three cylinders, two steam discharge, black soy sauce, condensing turbine；Unit parameter: initial steam pressure
24.2MPa.a, 566 DEG C of initial steam temperature, 566 DEG C of reheat steam temperature, heating extraction pressure 0.4MPa.a, maximum heating steam extraction amount
797.11t/h。
Specific embodiment 2: illustrating that present embodiment, present embodiment are to specific embodiment in conjunction with Fig. 3 to Fig. 5
A kind of overcritical optical axis heat supply transformation steam turbine of 350MW described in one further limits, and in the present embodiment, the heating is taken out
Vapour short tube and attachment 1 include connection short tube 7, closure plate flange and connector 8, middle pressure vapour side stopboard 9, middle pressure exhaust region connection method
Blue and connector 10, heating pipe flange and connector 11, heating extraction line 12, pressure tap 13 and temperature measuring point 14；
Medium pressure exhaust region connecting flange and connector 10 are used to be connected to the bottom end for connecing short tube 7 and middle pressure cylinder, even
The top for connecing short tube 7 is connected to the side of closure plate flange and connector 8, and middle pressure vapour side stopboard 9 is arranged in closure plate flange and company
The other side of fitting 8；
One end of the heating extraction line 12 is connected to short tube 7 is connect；Heating pipe flange and the setting of connector 11 exist
The other end of heating extraction line 12；
The pressure tap 13 and temperature measuring point 14 are separately positioned on heating extraction line 12.
In the present embodiment, after cancelling original machine group communicating pipe, middle pressure exhaust region connecting flange and connector 10 and middle pressure
The outer shell of cylinder connects, and connection short tube 7 is arranged, and connects 7 top of short tube closure plate flange and connector 8 and middle pressure vapour side stopboard
9 are connected；It connects and arranges a heating extraction line 12 on short tube 7；It include flange in heating pipe flange and connector 11, anti-
Method in flange and related fittings (nut, bolt, gasket etc.), heating extraction line 12 and warm pipe flange and connector 11
The blue anti-flange directly inserted in weldering, heating extraction line 12 and heating pipe flange and connector 11 directly inserts weldering, and two sides weld
Afterwards, two side flanges handle is tightly connected with connector；Pressure tap 13 is used to monitor the pressure parameter of heating steam, and temperature measuring point 14 is used for
Monitor the temperature parameter of heating steam.
Specific embodiment 3: present embodiment is to the overcritical optical axis of a kind of 350MW described in specific embodiment one
Heat supply transformation steam turbine further limits, and in the present embodiment, which further includes cooling steam pipeline 15 and feed pump
Small steam turbine steam discharge draws interface and connector 16；
The small steam turbine steam discharge of feed pump draws interface and connector 16 is used to be connected to the gland steam exhauster of feed pump turbine 17
It is connected with the other end of one end of cooling steam pipeline 15, cooling steam pipeline 15 with the cooling steam connection 2 of low pressure.
In the present embodiment, the small steam turbine steam discharge of feed pump draws interface and connector 16 includes adapter tube, flange, anti-method
Blue, connector；When unit starting, directly draw vapour from the small steam turbine steam discharge of feed pump, into low pressure (LP) cylinder.
Claims (3)
1. steam turbine is transformed in a kind of overcritical optical axis heat supply of 350MW, which includes turbine body；
The turbine body is by adjusting end to be followed successively by high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder to electric end；
It is equipped with low pressure optical axis heat supply rotor (3) in low pressure (LP) cylinder, is equipped with middle pressure rotor (6) in intermediate pressure cylinder；
It is characterized in that, the steam turbine further includes heating steam extraction short tube and attachment (1), low pressure cooling steam connection (2), adjusts end connection
Axis device bolt (4), electric end coupling bolt (5) and feed pump turbine (17)；
The low pressure optical axis heat supply rotor (3) is attached with middle pressure rotor (6) using tune end coupling bolt (4)；
The low pressure optical axis heat supply rotor (3) is attached with generator amature using electric end coupling bolt (5)；
Heating steam extraction short tube and attachment (1) are connected to middle pressure steam ports to replace mesolow communicating pipe；Low pressure cools down steam connection
(2) it is connected to low pressure admission mouth；
Heating steam extraction short tube and the steam of attachment (1) discharge are completely used for heat supply network heating；
Draw some vapor from the gland steam exhauster of the feed pump turbine (17), by cooling steam pipeline and low pressure cooling steam into
Vapour adapter tube is connected into the cooling low pressure optical axis heat supply rotor of low pressure (LP) cylinder.
2. steam turbine is transformed in the overcritical optical axis heat supply of a kind of 350MW according to claim 1, which is characterized in that described to adopt
Warm steam extraction short tube and attachment (1) include connection short tube (7), closure plate flange and connector (8), middle pressure vapour side stopboard (9), middle pressure
Exhaust region connecting flange and connector (10), heating pipe flange and connector (11), heating extraction line (12), pressure tap
(13) and temperature measuring point (14)；
Medium pressure exhaust region connecting flange and connector (10) are used to be connected to the bottom end for connecing short tube (7) and middle pressure cylinder, even
The top for connecing short tube (7) is connected to the side of closure plate flange and connector (8), and middle pressure vapour side stopboard (9) is arranged in closure plate method
Blue and connector (8) the other side；
One end of the heating extraction line (12) is connected to short tube (7) are connect；Heating pipe flange and connector (11) setting
The other end in heating extraction line (12)；
The pressure tap (13) and temperature measuring point (14) are separately positioned on heating extraction line (12).
3. steam turbine is transformed in the overcritical optical axis heat supply of a kind of 350MW according to claim 1, which is characterized in that the steamer
Machine further includes that cooling steam pipeline (15) and the small steam turbine steam discharge of feed pump draw interface and connector (16)；
The small steam turbine steam discharge of feed pump draws interface and connector (16) is used to be connected to the gland steam exhauster of feed pump turbine (17)
It is connected with the other end of one end of cooling steam pipeline (15), cooling steam pipeline (15) with low pressure cooling steam connection (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309103.0A CN109404074B (en) | 2018-11-05 | 2018-11-05 | 350MW supercritical optical axis heat supply transformation steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309103.0A CN109404074B (en) | 2018-11-05 | 2018-11-05 | 350MW supercritical optical axis heat supply transformation steam turbine |
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| CN109404074A true CN109404074A (en) | 2019-03-01 |
| CN109404074B CN109404074B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811309103.0A Active CN109404074B (en) | 2018-11-05 | 2018-11-05 | 350MW supercritical optical axis heat supply transformation steam turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882256A (en) * | 2019-04-09 | 2019-06-14 | 哈尔滨汽轮机厂有限责任公司 | A kind of 135MW super-pressure back pressure heat supply transformation steam turbine |
| CN112049697A (en) * | 2020-07-17 | 2020-12-08 | 哈尔滨汽轮机厂有限责任公司 | 200MW ultrahigh-pressure three-cylinder three-exhaust back pressure modified steam turbine |
| CN112412554A (en) * | 2020-11-23 | 2021-02-26 | 东方电气集团东方汽轮机有限公司 | Three-cylinder three-exhaust steam turbine capable of switching circulating water heat supply and switching method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109882256A (en) * | 2019-04-09 | 2019-06-14 | 哈尔滨汽轮机厂有限责任公司 | A kind of 135MW super-pressure back pressure heat supply transformation steam turbine |
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| CN112049697A (en) * | 2020-07-17 | 2020-12-08 | 哈尔滨汽轮机厂有限责任公司 | 200MW ultrahigh-pressure three-cylinder three-exhaust back pressure modified steam turbine |
| CN112412554A (en) * | 2020-11-23 | 2021-02-26 | 东方电气集团东方汽轮机有限公司 | Three-cylinder three-exhaust steam turbine capable of switching circulating water heat supply and switching method thereof |
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| CN109404074B (en) | 2023-10-10 |
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