CN106870033A - Cogeneration double-extract steam turbine - Google Patents
Cogeneration double-extract steam turbine Download PDFInfo
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- CN106870033A CN106870033A CN201510934346.3A CN201510934346A CN106870033A CN 106870033 A CN106870033 A CN 106870033A CN 201510934346 A CN201510934346 A CN 201510934346A CN 106870033 A CN106870033 A CN 106870033A
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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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/38—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of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
- 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—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 of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/345—Control or safety-means particular thereto
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
The present invention provides a kind of cogeneration double-extract steam turbine, including the high pressure cylinder being sequentially distributed from high to low along steam inlet condition, first intermediate pressure cylinder, second intermediate pressure cylinder and low pressure (LP) cylinder, the steam drain of the first intermediate pressure cylinder be connected with first in pressure vapour main pipe, the end of the pressure vapour main pipe in first is pressed into vapour main pipe in being connected with the first adjustment extraction line and second, vapour is pressed into being pressed into the end of vapour main pipe is also associated with being connected with the air intake of the second intermediate pressure cylinder first in second to be in charge of, the steam drain of the second intermediate pressure cylinder be connected with second in pressure vapour main pipe, the end of the pressure vapour main pipe in second is connected with the second adjustment extraction line and the low pressure admission pipeline being connected with the air intake of low pressure (LP) cylinder.The application realizes two black soy sauces of pressure rating by setting up intermediate pressure cylinder, valve and pipeline, so as to the double adjustment for meeting Large Copacity high parameter are drawn gas demand, and ensures that steam turbine still conforms to the requirement of efficient design and operation under pure condensate operating mode.
Description
Technical field
The present invention relates to a kind of steam turbine, more particularly to a kind of cogeneration double-extract steam turbine.
Background technology
Cogeneration turbine generating set refers to steam turbine again suitable in steam turbine while driving generator to power network conveying electric energy
Flow passing position at extract a part of steam out and enter heat supply network heat supply, another part steam continues expansion work, band in turbine runner
The rotor of output shaft axle acting of dynamic steam turbine, the thermal efficiency and performance driving economy of steamer are greatly improved with this.Cogeneration turbine
Mainly there are several forms such as back pressure type, steam extraction and condensing formula, back pressure extraction；Cogeneration double-extract steam turbine refers to cogeneration vapour
Turbine provides drawing gas for two pressure ratings respectively, for heat supply.
At present, conventional cogeneration double-extract steam turbine uses setting rotating barrier or seat cylinder valve in intermediate pressure cylinder higher to draw gas
The adjustment of parameter is drawn gas, and is extracted at the steam discharge of intermediate pressure cylinder and is drawn gas compared with the adjustment of low parameter, its draw gas valve and pipe arrangement such as figure
Shown in 1.As can be seen from Figure 1：Conventional cogeneration double-extract steam turbine includes the high pressure being arranged in order from high to low by steam inlet condition
Cylinder 1, intermediate pressure cylinder 2 and low pressure (LP) cylinder 3, are connected with high-pressure admission pipeline at the air intake of high pressure cylinder 1, the steam drain of high pressure cylinder 1 and
Steam pipe road is pressed into being connected between the air intake of intermediate pressure cylinder 2, is connected between the steam drain of intermediate pressure cylinder 2 and the air intake of low pressure (LP) cylinder 3
Low pressure admission pipeline is connected to, high pressure main valve TV and governor valve are disposed with along entering vapour direction on the high-pressure admission pipeline
Door GV, middle pressure main valve RSV and middle pressure tune valve IV is disposed with along entering vapour direction on medium pressure steam inlet pipe road, described
Pipe pressure regulating valve LCV is communicated with low pressure admission pipeline；Rotating barrier ICV is provided with intermediate pressure cylinder 2, intermediate pressure cylinder 2 exists
Middle pressure adjustment extraction line is connected with rotating barrier ICV, is pressed in this and middle pressure extraction pressure regulation is provided with adjustment extraction line
Valve IEV；Low pressure adjustment extraction line is also associated with the steam drain of intermediate pressure cylinder 2, is provided with low pressure adjustment extraction line low
Pressure extraction pressure regulating valve LEV.When steam turbine is operated under operating mode of drawing gas, into intermediate pressure cylinder 2 steam by before middle pressure what
Afterwards, a part of steam is through-flow into middle pressure below by controllable rotating barrier ICV, and another part steam is pressed in passing through and taken out
Vapour pressure force regulating valve IEV presses steam bleeding system in entering；A steam discharge part for intermediate pressure cylinder 2 is adjusted by controllable connection pipe pressure
Enter low pressure (LP) cylinder 3 after valve LCV, another part enters low-pressure pumping steam system by low-pressure pumping steam pressure-regulating valve LEV.Therefore,
In the cogeneration double-extract steam turbine, medium pressure adjustment extraction line and low pressure adjustment extraction line form cogeneration steamer
The black soy sauce of machine.
But, there is following defect in above-mentioned cogeneration double-extract steam turbine：Because it sets tune between the flow passage component of intermediate pressure cylinder
Whole vapor extraction device (i.e. rotating barrier or seat cylinder valve), therefore which reduce the design efficiency of intermediate pressure cylinder, particularly steam turbine pure condensate
Operating efficiency under operating mode；In addition, for the unit of high-power grade, due to the limitation in terms of this body structure of unit and intensity,
It brings very big difficulty and limitation to the draw gas design of mechanism of intermediate pressure section adjustment, therefore setting adjustment is drawn gas dress in intermediate pressure cylinder
Put can also bring the limitation of a series of operation aspect and potential safety hazard to unit.
The content of the invention
The shortcoming of prior art, the double of Large Copacity high parameter are disclosure satisfy that it is an object of the invention to provide a kind of in view of the above
Adjust draw gas demand and the cogeneration double-extract steam turbine with operational efficiency higher and reliability.
To achieve the above object, the present invention provides a kind of cogeneration double-extract steam turbine, including along steam inlet condition from high to low successively
The high pressure cylinder of distribution, the first intermediate pressure cylinder, the second intermediate pressure cylinder and low pressure (LP) cylinder, the steam drain of the high pressure cylinder enter with the first intermediate pressure cylinder
Be pressed into vapour main pipe in being connected with first between steam ports, the steam drain of first intermediate pressure cylinder be connected with first in pressure vapour main pipe, should
The end of pressure vapour main pipe is pressed into vapour main pipe in being connected with the first adjustment extraction line and second in first, and vapour is pressed into described second
The end of main pipe be also associated with being connected with the air intake of the second intermediate pressure cylinder first in be pressed into vapour and be in charge of, second intermediate pressure cylinder
Steam drain be connected with second in pressure vapour main pipe, the end of the pressure vapour main pipe in second be connected with the second adjustment extraction line and with
The low pressure admission pipeline that the air intake of low pressure (LP) cylinder is connected.
Further, vapour main pipe is pressed into described second and is provided with the first control valve group, the first adjustment extraction line is provided with along taking out
The first gas pressure sensor and the second control valve group of vapour direction successively distribution；The low pressure admission pipeline is provided with the 3rd control
Valve group, the second adjustment extraction line is provided with the second gas pressure sensor and the 4th control valve group along direction successively distribution of drawing gas.
Preferably, vapour is pressed into described first and is in charge of the 3rd gas pressure being additionally provided with for detecting the second intermediate pressure cylinder air intake pressure
Force snesor, vapour direction is entered along the second intermediate pressure cylinder, and the 3rd gas pressure sensor is located at the rear of the first control valve group；
The 4th gas pressure sensor for detecting LP steam admission pressure is additionally provided with the low pressure admission pipeline, along low pressure (LP) cylinder
Enter vapour direction, the 4th gas pressure sensor is located at the rear of the 3rd control valve group.
Further, also including a mesolow cylinder, the end that vapour main pipe is pressed into described second is also associated with entering with mesolow cylinder
Steam ports be connected second in be pressed into vapour and be in charge of, vapour be pressed into described second be in charge of to be provided with and enter vapour direction successively along mesolow cylinder
5th control valve group and the 5th gas pressure sensor of successively distribution, the 5th gas pressure sensor are used to detect mesolow
The air intake pressure of cylinder.
Preferably, the rotor of the high pressure cylinder, the rotor of the first intermediate pressure cylinder, the rotor of the second intermediate pressure cylinder and low pressure (LP) cylinder turn
Sub- single shaft is arranged and constitutes the first rotor, and the rotor of mesolow cylinder constitutes the second rotor, the first rotor and the second rotor rigidity
Connection.
Preferably, the rotor of the high pressure cylinder, the rotor of the first intermediate pressure cylinder, the rotor of the second intermediate pressure cylinder and low pressure (LP) cylinder turn
Sub- single shaft is arranged and constitutes the first rotor, and the rotor of mesolow cylinder constitutes the second rotor, the first rotor and the second rotor split axle
Arrangement is connected by motor synchronizing clutch.
Further, first intermediate pressure cylinder and the second intermediate pressure cylinder are conjunction cylinder reflux structure.
As described above, cogeneration double-extract steam turbine of the present invention, has the advantages that：
The cogeneration double-extract steam turbine on the architecture basics of original steam turbine, by set up intermediate pressure cylinder and in intermediate pressure cylinder and
Set up valve and pipeline between low pressure (LP) cylinder to realize two black soy sauces of pressure rating, so as to the double adjustment for meeting Large Copacity high parameter are taken out
Vapour demand, and it does not change the general structure of original steam turbine, in terms of without by original steam turbine self structure and intensity
Limitation, while also ensure steam turbine still conformed under pure condensate operating mode efficient design and operation requirement, ensure steam turbine peace
Row for the national games.
Brief description of the drawings
Fig. 1 is the steam bleeding system schematic diagram of cogeneration double-extract steam turbine in the prior art.
Fig. 2 is the steam bleeding system schematic diagram of cogeneration double-extract steam turbine in the present invention.
Fig. 3 is another embodiment of Fig. 2.
Component label instructions
1 high pressure cylinder
2 intermediate pressure cylinders
3 low pressure (LP) cylinders
4 first intermediate pressure cylinders
5 second intermediate pressure cylinders
6 mesolow cylinders
7 bindiny mechanisms
Vapour main pipe is pressed into 8 first
Pressure vapour main pipe in 9 first
10 first adjustment extraction lines
Vapour is pressed into 11 first to be in charge of
Vapour main pipe is pressed into 12 second
Pressure vapour main pipe in 13 second
14 second adjustment extraction lines
15 low pressure admission pipelines
Vapour is pressed into 16 second to be in charge of
17 first control valve groups
18 second control valve groups
19 the 3rd control valve groups
20 the 4th control valve groups
21 the 5th control valve groups
22 first gas pressure sensors
23 second gas pressure sensors
24 the 3rd gas pressure sensors
25 the 4th gas pressure sensors
26 the 5th gas pressure sensors
27 first generators
28 second generators
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be taken off by this specification
The content of dew understands other advantages of the invention and effect easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to coordinate disclosed in specification
Content, so that those skilled in the art understands and reads, is not limited to enforceable qualifications of the invention, therefore do not have
Technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing institute's energy of the present invention
Under effect of generation and the purpose to be reached, all should still fall in the range of disclosed technology contents are obtained and can covered.
Meanwhile, in this specification it is cited such as " on ", D score, "left", "right", the term of " centre " and " ", be merely convenient to
Narration understands, and be not used to limit enforceable scope of the invention, and its relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as enforceable category of the invention.
The present invention provides a kind of cogeneration double-extract steam turbine, as shown in Fig. 2 the cogeneration double-extract steam turbine includes that vapour is entered on edge
High pressure cylinder 1, the first intermediate pressure cylinder 4, the second intermediate pressure cylinder 5 and low pressure (LP) cylinder 3 that parameter is sequentially distributed from high to low, the high pressure cylinder 1
Air intake be connected with boiler by high-pressure admission pipeline, the air intake of the steam drain of the high pressure cylinder 1 and the first intermediate pressure cylinder 4
Between be connected with first in be pressed into vapour main pipe 8, the steam drain of first intermediate pressure cylinder 4 be connected with first in pressure vapour main pipe 9, should
The end of pressure vapour main pipe 9 is pressed into vapour main pipe 12, described second in being connected with the first adjustment extraction line 10 and second in first
In be pressed into the end of vapour main pipe 12 is also associated with being connected with the air intake of the second intermediate pressure cylinder 5 first in be pressed into vapour and be in charge of 11,
The steam drain of second intermediate pressure cylinder 5 be connected with second in pressure vapour main pipe 13, the end of the pressure vapour main pipe 13 in second connects
It is connected to the second adjustment extraction line 14 and the low pressure admission pipeline 15 being connected with the air intake of low pressure (LP) cylinder 3.Preferably, in Fig. 2
In shown cogeneration double-extract steam turbine, it is pressed into vapour main pipe 12 and first that be pressed into vapour to be in charge of 11 be a pipe in described second
Road.
In above-mentioned cogeneration double-extract steam turbine, the rotor of the high pressure cylinder 1, the rotor of the first intermediate pressure cylinder 4, the second intermediate pressure cylinder
5 rotor and the rotor single shaft of low pressure (LP) cylinder 3 arrange and be sequentially connected, i.e. the rotor of high pressure cylinder 1, the first intermediate pressure cylinder 4
The rotor of rotor, the rotor of the second intermediate pressure cylinder 5 and low pressure (LP) cylinder 3 shares a roots rotor axle, so that the first rotor is constituted, should
The output end of the first rotor is connected with the first generator 27.Cogeneration double-extract steam turbine mainly has two kinds of operating conditions, respectively
It is pure condensate operating mode and operating mode of drawing gas.When steam turbine runs under pure condensate operating mode, the first adjustment extraction line 10 and second is adjusted
Whole extraction line 14 is turned off；Now, steam expansion work in steam turbine, drives the first rotor to rotate, and the heat energy of steam is complete
Portion is converted into the mechanical energy of the first rotor, drives the first generator 27 to generate electricity；Under pure condensate operating mode, the electrical power that steam turbine sends
It is maximum.When steam turbine runs under operating mode of drawing gas, the first adjustment extraction line 10 and second adjustment extraction line 14 is equal
Open, the first adjustment extraction line 10 draws gas for the middle pressure of steam turbine, the second adjustment extraction line 14 is taken out for the low pressure of steam turbine
Vapour, therefore the first adjustment adjustment extraction line 14 of extraction line 10 and second constitutes two different pressures of cogeneration turbine etc.
The black soy sauce of level；Now, steam expansion work in steam turbine, a part of steam rotor driven is rotated, and switchs to the mechanical energy of rotor,
For driving the first generator 27, another part steam to be taken out from the first adjustment adjustment extraction line 14 of extraction line 10 and second
Go out, for giving user's heat supply.Therefore, the steam turbine realizes cogeneration, so as to be greatly improved steam-turbine unit operation
Economy.
In addition, the application is on the architecture basics of original steam turbine, by setting up an intermediate pressure cylinder and in two intermediate pressure cylinders
Set up valve and pipeline and low pressure (LP) cylinder between to realize two black soy sauces of pressure rating, so as to meet double adjustment of Large Copacity high parameter
The demand of demand of drawing gas and low cost, and it does not change the general structure of original steam turbine, from without by original steam turbine from
Limitation in terms of body structure and intensity, moreover it is possible to greatly reduce the influence to steam turbine pure condensate operating mode, to ensure steam turbine in pure condensate work
Requirement, the safe operation of guarantee steam turbine of efficient design and operation are still conformed under condition.
Further, as shown in Fig. 2 vapour main pipe 12 is pressed into described second is provided with the first control valve group 17, the first adjustment
Extraction line 10 is provided with the first gas pressure sensor 22 and the second control valve group 18 along direction successively distribution of drawing gas, described
First gas pressure sensor 22 is used to detect the steam pressure before the second control valve group 18；Set on the low pressure admission pipeline 15
There is the 3rd control valve group 19, the second adjustment extraction line 14 is provided with the second gas pressure sensing along direction successively distribution of drawing gas
The control valve group 20 of device 23 and the 4th, the second gas pressure sensor 23 is used to detect the steam before the 4th control valve group 20
Pressure.Preferably, be pressed into described first vapour be in charge of on 11 be additionally provided with for detect the air intake pressure of the second intermediate pressure cylinder 5 the 3rd
Gas pressure sensor 24, vapour direction is entered along the second intermediate pressure cylinder 5, and the 3rd gas pressure sensor 24 is located at the first control
The rear of valve group processed 17；The 4th gas for detecting the air intake pressure of low pressure (LP) cylinder 3 is additionally provided with the low pressure admission pipeline 15
Pressure sensor 25, vapour direction is entered along low pressure (LP) cylinder 3, and the 4th gas pressure sensor 25 is located at the 3rd control valve group 19
Rear.
When the first adjustment extraction line 10 comes into operation, the aperture of the first control valve group 17 is controlled, to control the second control valve
Steam pressure before group 18, steam pressure before the first gas pressure sensor 22 detects the second control valve group 18 meets the
During the requirement that one adjustment is drawn gas, then the second control valve group 18 is opened, and adjusts its aperture to control the first adjustment extraction line 10
Flow；Meanwhile, the air intake steam pressure of the second intermediate pressure cylinder 5 is monitored by the 3rd gas pressure sensor 24, to characterize the
The inlet flow rate of two intermediate pressure cylinders 5.
When the second adjustment extraction line 14 comes into operation, the aperture of the 3rd control valve group 19 is controlled, to control the 4th control valve
Steam pressure before group 20, steam pressure before the second gas pressure sensor 23 detects the 4th control valve group 20 meets the
During the requirement that two adjustment are drawn gas, then the 4th control valve group 20 is opened, and adjusts its aperture to control the second adjustment extraction line 14
Flow；Meanwhile, the air intake steam pressure of low pressure (LP) cylinder 3 is monitored by the 4th gas pressure sensor 25, to characterize low pressure (LP) cylinder
3 inlet flow rate.
Further, the cogeneration double-extract steam turbine that the application is related to can also set up a mesolow cylinder 6, now, steamer
Machine system architecture is as shown in figure 3, the end that vapour main pipe 12 is pressed into described second is also associated with the air intake phase with mesolow cylinder 6
Be pressed into vapour and be in charge of 16 in the second of connection, be pressed into described second vapour be in charge of 16 be provided with along mesolow cylinder 6 enter vapour direction according to
5th control valve group 21 and the 5th gas pressure sensor 26 of secondary priority distribution, the 5th gas pressure sensor 26 are used for
The air intake pressure of detection mesolow cylinder 6, to characterize the inlet flow rate of mesolow cylinder 6.By setting up one in steam-turbine unit
Individual mesolow cylinder 6 can further improve the economical operation of unit, adapt to the change of thermic load, improve steam utilization, reduce
Energy waste.
The rotor of the mesolow cylinder 6 is the second rotor, and when mesolow cylinder 6 is set up, the second rotor and the first rotor can pass through
Bindiny mechanism 7 is connected.In the present embodiment, there are three kinds of forms in bindiny mechanism 7：1st, it is rigidly connected；2nd, the structure for disconnecting,
I.e. split axle is not connected to；3rd, motor synchronizing clutch, is capable of achieving off-the-line online between the first rotor and the second rotor and synchronization.Specifically,
When the first rotor and the second rotor are rigidly connected, the first rotor and the second rotor share a roots rotor axle, and the first generator 27 connects
The end of the armature spindle is connected on, the mechanical energy and bitrochanteric mechanical energy of the first rotor all drive the first generator 27, so as to be
Power network is powered.In the case where being rigidly connected, the steam discharge of the first intermediate pressure cylinder 4 should preferentially meet the design discharge of mesolow cylinder 6 (i.e.
Minimum throttle flow)；Afterwards, the steam discharge of the first intermediate pressure cylinder 4 meets the middle pressure amount of the drawing gas demand of the first adjustment extraction line 10 again.
When the first rotor and the second rotor split axle are set, the first rotor and the second rotor are respectively with two roots rotor axles, the first rotor
Rotor shaft end connect the first generator 27, the bitrochanteric rotor shaft end connects the second motor, therefore the machinery of the first rotor
The first generator 27 can be driven, bitrochanteric mechanical energy drives the second generator 28, the first generator 27 and the second generator
28 is common for power network is powered.In the case where disconnecting, the steam discharge of the first intermediate pressure cylinder 4 should preferentially meet the first adjustment extraction steam pipe
The middle pressure amount of the drawing gas demand in road 10, when the central pressure amount of drawing gas demand is more than the design discharge of mesolow cylinder 6, can control valve by the 5th
Group 21 is closed, and mesolow cylinder 6 is disengaged；When the central pressure amount of drawing gas demand is less than the design discharge of mesolow cylinder 6, can be by the 5th control
Valve group processed 21 is reopened, the re-synchronization of mesolow cylinder 6 operation, so as to operation of the steam-turbine unit under operating mode of drawing gas can be improved
Economy, keeps low pressure (LP) cylinder 3 to have efficiency higher.
When the first rotor and the second rotor are connected by motor synchronizing clutch, motor synchronizing clutch can realize the rotor of the first rotor
Axle and bitrochanteric armature spindle online off-the-line or synchronous, the output end of steam-turbine unit only connect the first generator 27.In first
The steam discharge of cylinder pressure 4 is still the preferential middle pressure amount of the drawing gas demand for meeting the first adjustment extraction line 10, and the central pressure amount of drawing gas demand is more than
During the design discharge of mesolow cylinder 6, the 5th control valve group 21 can be closed, while motor synchronizing clutch makes the rotor of the first rotor
Axle and the bitrochanteric online off-the-line of armature spindle, so that mesolow cylinder 6 is disengaged；The central pressure amount of drawing gas demand is less than mesolow cylinder
During 6 design discharge, the 5th control valve group 21 can be reopened, at the same motor synchronizing clutch make the armature spindle of the first rotor with
Bitrochanteric armature spindle synchronization, so that the re-synchronization of mesolow cylinder 6 runs, and then improves steam-turbine unit in operating mode of drawing gas
Under performance driving economy, keep the mechanical energy and bitrochanteric mechanical energy that have efficiency higher, the first rotor of low pressure (LP) cylinder 3 all to drive
Dynamic first generator 27, is that power network is powered.
Further, the intermediate pressure cylinder 5 of first intermediate pressure cylinder 4 and second is conjunction cylinder reflux structure, the i.e. cylinder body of the first intermediate pressure cylinder 4
Cylinder body with the second intermediate pressure cylinder 5 is structure as a whole, and the first intermediate pressure cylinder 4 and the second intermediate pressure cylinder 5 share a cylinder body in other words, and
The air intake of the air intake of the first intermediate pressure cylinder 4 and the second intermediate pressure cylinder 5 is respectively provided at the first intermediate pressure cylinder 4 and is connected with the second intermediate pressure cylinder 5
The both sides at place, so that taking up room for the first intermediate pressure cylinder 4 and the second intermediate pressure cylinder 5 can be reduced, to reduce the entirety of steam-turbine unit
Take volume and span, reduces cost.In addition, the low pressure (LP) cylinder 3 can be one, or multiple；It is multiple low when having
During cylinder pressure 3, then the low pressure admission pipeline 15 is connected with the air intake of multiple low pressure (LP) cylinders 3；The low pressure (LP) cylinder 3 may also be single
Stream, i.e., one steam discharge may also be double fluid, i.e., two steam discharges.
In sum, the cogeneration double-extract steam turbine that the application is related to has the advantages that：
1st, on the premise of original steam turbine main structure is not changed, some valves and pipeline are set up come real by between multiple cylinders
The cogeneration and black soy sauce of existing steam turbine, thus it is cost-effective, and do not limited by terms of steam turbine structure and intensity also, while
Ensure efficient design and operation of the steam turbine under pure condensate operating mode；
2nd, when user's thermic load is changed greatly, the operation cylinder number of steam turbine can be managed, lifting operation as much as possible
Efficiency；
3rd, the black soy sauce way of steam of steam-turbine unit relative reduction in design difficulty, draws gas more reliable when running, and adapts to great Rong
Amount, the requirement of high pressure high temperature turbosets, facilitate the operation of steam turbine, safeguard and overhaul；
4th, by adjusting the first control valve group 17, the second control valve group 18, the 3rd control valve group 19, the 4th control valve group 20
With the aperture of the 5th control valve group 21, realize that two sections of adjustment are drawn gas, to meet steam turbine in the service condition of operating mode of drawing gas.
So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any to be familiar with this skill
The personage of art all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Therefore, such as
Those of ordinary skill in the art completed under without departing from disclosed spirit and technological thought all etc.
Effect modifications and changes, should be covered by claim of the invention.
Claims (7)
1. a kind of cogeneration double-extract steam turbine, it is characterised in that：Including be sequentially distributed from high to low along steam inlet condition high pressure cylinder (1),
First intermediate pressure cylinder (4), the second intermediate pressure cylinder (5) and low pressure (LP) cylinder (3), press in the steam drain and first of the high pressure cylinder (1)
Vapour main pipe (8), the steam drain connection of first intermediate pressure cylinder (4) are pressed into being connected with first between the air intake of cylinder (4)
Pressure vapour main pipe (9) in having first, the end of pressure vapour main pipe (9) in first is connected with the first adjustment extraction line (10)
With second in be pressed into vapour main pipe (12), the end that vapour main pipe (12) is pressed into described second is also associated with and the second intermediate pressure cylinder
(5) air intake be connected first in be pressed into vapour and be in charge of (11), the steam drain of second intermediate pressure cylinder (5) is connected with
Pressure vapour main pipe (13) in second, the end of pressure vapour main pipe (13) in second is connected with the second adjustment extraction line (14)
And the low pressure admission pipeline (15) being connected with the air intake of low pressure (LP) cylinder (3).
2. cogeneration double-extract steam turbine according to claim 1, it is characterised in that：Vapour main pipe (12) is pressed into described second
The first control valve group (17) is provided with, the first adjustment extraction line (10) is provided with first be successively distributed along direction of drawing gas
Gas pressure sensor (22) and the second control valve group (18)；The low pressure admission pipeline (15) is provided with the 3rd control
Valve group (19), the second adjustment extraction line (14) is provided with the second gas pressure sensor along direction successively distribution of drawing gas
And the 4th control valve group (20) (23).
3. cogeneration double-extract steam turbine according to claim 1, it is characterised in that：Vapour is pressed into described first to be in charge of (11)
On be additionally provided with for detect the second intermediate pressure cylinder (5) air intake pressure the 3rd gas pressure sensor (24), along second press
Cylinder (5) enters vapour direction, rear of the 3rd gas pressure sensor (24) positioned at the first control valve group (17)；
The 4th gas pressure sensing for detecting low pressure (LP) cylinder (3) air intake pressure is additionally provided with the low pressure admission pipeline (15)
Device (25), vapour direction is entered along low pressure (LP) cylinder (3), and the 4th gas pressure sensor (25) is positioned at the 3rd control valve group
(19) rear.
4. cogeneration double-extract steam turbine according to claim 1, it is characterised in that：Also include a mesolow cylinder (6), it is described
It is pressed into during the end of vapour main pipe (12) is also associated with being connected with the air intake of mesolow cylinder (6) second is pressed into second
Vapour is in charge of (16), be pressed into described second vapour be in charge of (16) be provided with along mesolow cylinder (6) enter vapour direction successively successively
5th control valve group (21) and the 5th gas pressure sensor (26) of distribution, the 5th gas pressure sensor (26)
Air intake pressure for detecting mesolow cylinder (6).
5. cogeneration double-extract steam turbine according to claim 4, it is characterised in that：The rotor of the high pressure cylinder (1),
The rotor single shaft arrangement and structure of the rotor, the rotor of the second intermediate pressure cylinder (5) and low pressure (LP) cylinder (3) of one intermediate pressure cylinder (4)
Into the first rotor, the rotor of mesolow cylinder (6) constitutes the second rotor, and the first rotor and the second rotor are rigidly connected.
6. cogeneration double-extract steam turbine according to claim 4, it is characterised in that：The rotor of the high pressure cylinder (1),
The rotor single shaft arrangement and structure of the rotor, the rotor of the second intermediate pressure cylinder (5) and low pressure (LP) cylinder (3) of one intermediate pressure cylinder (4)
Into the first rotor, the rotor of mesolow cylinder (6) constitutes the second rotor, the first rotor and the second rotor split axle arrangement or
It is connected by motor synchronizing clutch.
7. cogeneration double-extract steam turbine according to claim 1, it is characterised in that：First intermediate pressure cylinder (4) and second
Intermediate pressure cylinder (5) is conjunction cylinder reflux structure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575947A (en) * | 2022-01-24 | 2022-06-03 | 中国神华煤制油化工有限公司 | Thermodynamic system, pressure adjusting method of steam main pipe of thermodynamic system and coal chemical industry waste heat utilization method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0814010A (en) * | 1994-06-27 | 1996-01-16 | Fuji Electric Co Ltd | Power generation device of reheat condensing steam turbine |
| CN103306751A (en) * | 2013-07-04 | 2013-09-18 | 上海电气电站设备有限公司 | Novel co-generation turbine |
| CN203685322U (en) * | 2013-12-24 | 2014-07-02 | 河北省电力勘测设计研究院 | Steam extraction heat supply system for 350MW supercritical heat supply unit |
| CN104895629A (en) * | 2015-06-24 | 2015-09-09 | 东方电气集团东方汽轮机有限公司 | Method for transforming condensed steam type turbine generator unit into back pressure type unit |
| CN205315057U (en) * | 2015-12-14 | 2016-06-15 | 上海电气电站设备有限公司 | Cogeneration black soy sauce steam turbine |
-
2015
- 2015-12-14 CN CN201510934346.3A patent/CN106870033B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0814010A (en) * | 1994-06-27 | 1996-01-16 | Fuji Electric Co Ltd | Power generation device of reheat condensing steam turbine |
| CN103306751A (en) * | 2013-07-04 | 2013-09-18 | 上海电气电站设备有限公司 | Novel co-generation turbine |
| CN203685322U (en) * | 2013-12-24 | 2014-07-02 | 河北省电力勘测设计研究院 | Steam extraction heat supply system for 350MW supercritical heat supply unit |
| CN104895629A (en) * | 2015-06-24 | 2015-09-09 | 东方电气集团东方汽轮机有限公司 | Method for transforming condensed steam type turbine generator unit into back pressure type unit |
| CN205315057U (en) * | 2015-12-14 | 2016-06-15 | 上海电气电站设备有限公司 | Cogeneration black soy sauce steam turbine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575947A (en) * | 2022-01-24 | 2022-06-03 | 中国神华煤制油化工有限公司 | Thermodynamic system, pressure adjusting method of steam main pipe of thermodynamic system and coal chemical industry waste heat utilization method |
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