CN104937339B - Condenser and the steam turbine plant for possessing condenser - Google Patents

Condenser and the steam turbine plant for possessing condenser Download PDF

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Publication number
CN104937339B
CN104937339B CN201480005674.9A CN201480005674A CN104937339B CN 104937339 B CN104937339 B CN 104937339B CN 201480005674 A CN201480005674 A CN 201480005674A CN 104937339 B CN104937339 B CN 104937339B
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CN
China
Prior art keywords
steam
pass
heat transfer
steamturbine
transfer tube
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Expired - Fee Related
Application number
CN201480005674.9A
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Chinese (zh)
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CN104937339A (en
Inventor
堀田克广
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Mitsubishi Power Ltd
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Mitsubishi Hitachi Power Systems Ltd
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Publication of CN104937339A publication Critical patent/CN104937339A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/003Plants characterised by condensers arranged or modified to co-operate with the engines condenser cooling circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28BSTEAM OR VAPOUR CONDENSERS
    • F28B1/00Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001Recuperative heat exchangers
    • F28D21/0003Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/001Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels

Abstract

The present invention provides a kind of condenser and possesses the steam turbine plant of condenser.The condenser (30) of the present invention possesses:Heat transfer tube group (32);Main body (35), coats heat transfer tube group;Middle body (41), forms steam primary flow path (42), and the steam primary flow path (42) is used to guide the discharge steam (ES) from steamturbine (3) to the heat transfer tube group in main body;And pass-out steam acceptance division (51), receive the steam i.e. pass-out steam (BS) for bypassing steamturbine, and the heat transfer tube group directed it in main body.Pass-out steam acceptance division (51) is configured at the outside of steam primary flow path (42), opening relative to the main body (35) of pass-out steam acceptance division (51) is formed at following location, i.e. from the region (34) different from inflow region (33), pass-out steam (BS) mainly flows into the position in heat transfer tube group (32), and the inflow region (33) is passing through the region in mainly flowing into heat transfer tube group after steam primary flow path for discharge steam (ES).

Description

Condenser and the steam turbine plant for possessing condenser
Technical field
The present invention relates to a kind of condensation for making to revert to water after discharging steam condensation from the steam that steamturbine is discharged Device and the steam turbine plant for possessing condenser.The application advocates special in the Japan of Japanese publication based on March 27th, 2013 The priority of profit application 2013-065403, and its content is applied at this.
Background technology
There is the steam turbine plant for possessing pass-out steam pipeline in steam turbine plant, the pass-out steam pipeline will bypass steaming The steam of steam turbine is guided to condenser.Steam i.e. pass-out steam to condenser is guided in steam whirlpool from pass-out steam pipeline Do not worked in wheel, therefore be high temperature and high pressure compared to the discharge steam worked in steamturbine.
As steam turbine plant such as above, for example, there is described steam turbine plant in following patent document 1. The steamturbine of the steam turbine plant is the axle stream discharge type steam whirlpool of the direction of principal axis discharge steam extended along turbine rotor Wheel.Relative to the steamturbine in the position of direction of principal axis, i.e., it is configured with condenser in the discharge direction of steam.On the condenser It is connected with the pass-out steam pipeline that pass-out steam passed through for bypassing steamturbine.
Also, as the condenser of axle stream discharge type steamturbine, for example, have described cold in following patent document 2 Condenser.The condenser has:Heat transfer tube group, is made up of multiple heat-transfer pipes internally by seawater etc.;Main body, coats the biography Heat pipe heat;And middle body, link steamturbine and main body, and the steam from steamturbine is guided to main body Heat transfer tube group.Main body is configured at the position of direction of principal axis relative to steamturbine, and middle body is connected to the sidepiece of main body.
Also, possess two groups of steamturbines in the steam turbine plant described in patent document 3.Two groups of steamturbines are The lower discharge type steamturbine of steam is discharged downward.Condenser is each configured with the lower position of each steamturbine.Two groups The body of condenser is connected to each other by connecting body at an upper portion thereof.Steam receiving magazine is configured with below connection body. The pass-out steam pipeline that steam passed through for bypassing steamturbine is connected with the steam receiving magazine.From pass-out steam pipeline stream Enter to the steam in steam receiving magazine and be flowed into via connection body in the body of two groups of condensers.
Conventional art document
Patent document
Patent document 1:Japanese Patent Publication 2003-148111 publications
Patent document 2:Japanese Patent Publication 9-273875 publications
Patent document 3:Japanese Patent Publication 7-167571 publications
The content of the invention
The invention technical task to be solved
In the steam turbine plant described in above-mentioned patent document 1, due to needing to make than discharge steam high temperature and high pressure Pass-out steam energy dissipation to a certain degree, therefore the end of pass-out steam pipeline is connected in the middle body of condenser. In this configuration, in order that the pass-out steam of a certain degree of energy dissipation is flowed into main body, the length of middle body, The installation space of steam turbine plant can not be effectively utilized.Also, in this configuration, it is flowed into the high temperature in middle body And the pass-out steam of high pressure is to steamturbine side adverse current, therefore, it is possible to be damaged turbine rotor and its bearing and axle envelope etc..Separately Outside, the discharge steam from steamturbine, the pass-out steam from pass-out steam pipeline are flowed into after middle body In heat transfer tube group in main body, therefore it is opposite in heat transfer tube group the region of middle body and is possible to more obvious than other positions It is impaired.
Also, in the steam turbine plant of above-mentioned patent document 3, as described above, by the body of two groups of condensers Steam receiving magazine is configured with below the connection body that top is connected to each other, pass-out steam is flowed into the steam receiving magazine.Cause This, in the steam turbine plant of above-mentioned patent document 3, in the body of condenser, without lengthening from steamturbine Discharge steam is guided to the length of the middle body in the main body of cladding heat transfer tube group, moreover, the bypass of high temperature and high pressure is steamed Vapour is also small to the possibility of steamturbine side adverse current.In the steam turbine plant, it is also contemplated that being connected to for connection body The middle body of each condenser.Therefore, the discharge steam from steamturbine and the pass-out steam from pass-out steam pipeline, After middle body, it is flowed into the heat transfer tube group in main body, can estimates and middle body is opposite in heat transfer tube group The part of body is substantially damaged than other positions.
That is, in the steam turbine plant described in patent document 1 and in the steam turbine plant described in patent document 3 In, the problem of there is the heat transfer tube group Local Damaged of condenser.
Then, it is an object of the invention to provide a kind of condenser that can suppress heat transfer tube group local damage and possess cold The steam turbine plant of condenser.
Means for solving technical task
Condenser for a kind of mode involved by the invention that solves the above problems, it is characterised in that possess:Heat-transfer pipe Group, by the medium of the discharge steam progress heat exchange with being discharged from steamturbine by inside, and reverts to the discharge steam Multiple heat-transfer pipes of water are constituted;Main body, coats the heat transfer tube group;Middle body, positioned at the steamturbine and the master Link both between body, and form steam primary flow path, the steam primary flow path is used for the discharge from the steamturbine Steam is guided to the heat transfer tube group in the main body;Pass-out steam acceptance division, receives the side for bypassing the steamturbine Logical steam, and through being formed from the opening of the main body, the pass-out steam is guided to the heat transfer in the main body Pipe group,
The pass-out steam acceptance division is configured at outside the steam primary flow path, and the opening of the main body is formed at such as bottom Put, i.e., from the region different from inflow region, the pass-out steam mainly flows into the position in the heat transfer tube group, the stream Enter region for the discharge steam passing through after the steam primary flow path, mainly flow into the region in the heat transfer tube group.
In addition, " mainly flowing into " is to represent that the steam is flowed into most from the region in heat transfer tube group into heat transfer tube group above It is many.
In the condenser, the region different from the inflow region mainly flowed into from discharge steam into heat transfer tube group is other Logical steam is mainly flowed into heat transfer tube group.So as to which in the condenser, the region point in heat transfer tube group is flowed into due to steam Dissipate, therefore, it is possible to suppress the local damage of heat transfer tube group.
Also, in the condenser, pass-out steam acceptance division is provided with outside steam primary flow path, therefore, with bypass is steamed Vapour guides the situation to the middle body of condenser to compare, and can shorten the length of middle body, and can effectively utilize steaming The installation space of steam turbine equipment.Also, in the condenser, pass-out steam will not be fed directly in steam primary flow path, because This pass-out steam is minimum to the possibility of steamturbine side adverse current, can suppress the turbine rotor and its bearing and axle of steamturbine The damage of envelope etc..In addition, in the condenser, sprayed due to not configuring into middle body pass-out steam steam jet ejector or Water ejector, therefore, it is possible to reduce the resistance of the discharge steam passed through in middle body.
Here, can also possess flowing suppression component in the condenser, the flowing suppression component suppresses by described Pass-out steam acceptance division and the pass-out steam that receives flow towards the heat transfer tube group.
In the condenser, due to the flowing of the pass-out steam towards heat transfer tube group can be suppressed, therefore, it is possible to further Suppress the damage of heat transfer tube group.
Also, in condenser described in any of the above, can also possess to injection water in the pass-out steam acceptance division Water ejection section.
In the condenser, due to pass-out steam can be cooled down in pass-out steam acceptance division, therefore, it is possible to suppress heat transfer The damage of pipe group.
Also, in condenser described in any of the above, the steamturbine is is extended to the rotor of the steamturbine Direction of principal axis, or discharge to the side of the steamturbine horizontal exhaust type steamturbine of steam, the middle body links In the sidepiece of the main body, the pass-out steam acceptance division can also be arranged at the top of the main body, and the main body The sidepiece of body and have using the heat transfer tube group as reference connection the middle body part opposite side part in its In a side.
Also, in condenser described in any of the above, except the condensation for the horizontal exhaust type steamturbine In condenser outside device, the steamturbine is the lower discharge type steam whirlpool that steam is discharged towards the lower section of the steamturbine Wheel, the middle body is linked to the top of the main body, and the pass-out steam acceptance division can also be arranged at the main body The sidepiece of body and the position for being opposite to the heat transfer tube group in the horizontal direction.
Steam turbine plant for a kind of mode involved by the invention that solves the above problems, it is characterised in that possess: Condenser described in any of the above;The steamturbine;Steam feeder, steam is supplied to the steamturbine;Pass-out steam Pipeline, using the steam from the steam feeder as the pass-out steam, makes the steam bypass the steam whirlpool After wheel, guiding to the pass-out steam acceptance division.
Also, for the steam turbine plant of the another way involved by the invention that solves the above problems, it is characterised in that Possess:The condenser, possesses the water ejection section;The steamturbine;Steam feeder, supplies to the steamturbine and steams Vapour;Feed pump, in the condenser, makes the water obtained by the condensation of the discharge steam return to the steam and supplies Device;Pass-out steam pipeline, using the steam from the steam feeder as the pass-out steam, bypasses the steam After the steamturbine, guiding to the pass-out steam acceptance division;Water pipe, will be pressurized by the feed pump Water is guided to the water ejection section.
Also possesses condenser described in any of the above in above steam turbine plant, therefore, it is possible to suppress heat transfer tube group Local damage.
Invention effect
According to a kind of mode of the present invention, by the region that steam is flowed into heat transfer tube group is disperseed, therefore, it is possible to Suppress the local damage of heat transfer tube group.
Brief description of the drawings
Fig. 1 is the system diagram of the steam turbine plant in first embodiment involved in the present invention.
Fig. 2 is the system diagram of the steam turbine plant in second embodiment involved in the present invention.
Fig. 3 is the system diagram of the steam turbine plant in the 3rd embodiment involved in the present invention.
Fig. 4 is the schematic sectional view of the condenser in the first variation involved in the present invention.
Fig. 5 is the schematic sectional view of the condenser in the second variation involved in the present invention.
Fig. 6 is the schematic sectional view of the condenser in the 3rd variation involved in the present invention.
Embodiment
Hereinafter, the various embodiments and various modifications example of steam turbine plant involved in the present invention are entered using accompanying drawing Row explanation.
" first embodiment "
The first embodiment of steam turbine plant involved in the present invention is illustrated with reference to Fig. 1.
The steam turbine plant of present embodiment possesses:The steam generators such as boiler (steam feeder) 1;High steam whirlpool Wheel 2 and low-pressure steam turbine 3, are driven by the steam produced in steam generator 1;Generator 5, passes through each steamturbine 2nd, 3 driving generates electricity;Reheater (steam feeder) 6, is reheated to the steam discharged from high-pressure steam turbine 2;It is cold Condenser 30, makes to revert to water after discharging steam ES condensations from the steam that low-pressure steam turbine 3 is discharged;And feed pump 7, make cold Water in condenser 30 returns to steam generator 1.
The steam turbine plant is also equipped with:High pressure vapor line 11, the steam produced in steam generator 1 i.e. high pressure is steamed Vapour HS is guided to high-pressure steam turbine 2;Be vented high pressure vapor line 15, by the steam discharged from high-pressure steam turbine 2 guide to Reheater 6;Reheated steam pipeline 13, will by reheater 6 heated steam to be reheated steam RS guide to low-pressure steam Turbine 3;Bypass high pressure steam pipework 12, is guided to condenser 30 from the branch of high pressure vapor line 11, and by high steam HS;It is other Logical reheated steam pipeline 14, is guided to condenser 30 from the branch of reheated steam pipeline 13, and by reheated steam RS;Condenser pipe 16, the water in condenser 30 is guided to feed pump 7;Supply line 17, future, the water of self-supporting water pump 7 was guided to steam generator 1;And water pipe 18, from the branch of supply line 17, and lead water to condenser 30.
The flow that the high steam HS to being flowed into high-pressure steam turbine 2 is provided with high pressure vapor line 11 is adjusted The high pressure steam control valve 21 of section.The reheated steam to being flowed into low-pressure steam turbine 3 is provided with reheated steam pipeline 13 The reheated steam regulating valve 23 that RS flow is adjusted.Open and close valve 22 is provided with bypass high pressure steam pipework 12.Also, Open and close valve 24 is also equipped with bypass reheated steam pipeline 14.In supply line 17, in the position than the branch of water pipe 18 Closer to the side of steam generator 1, the feed-regulating valve that the flow of the water to being flowed into steam generator 1 is adjusted is provided with 27.The spray water control valve 28 that the flow towards the water of injection in condenser 30 is adjusted is provided with water pipe 18.
High-pressure steam turbine 2 and low-pressure steam turbine 3 are provided with the turbine rotor rotated centered on axis and with can The mode of rotation coats the housing of turbine rotor.The turbine rotor of high-pressure steam turbine 2 and the turbine rotor of low-pressure steam turbine 3 Pivoted about with same axis, and it is connected to each other.Also, hair is linked with the turbine rotor of high-pressure steam turbine 2 The generator amature of motor 5.
Low-pressure steam turbine 3 is the axle stream discharge type steamturbine of the direction of principal axis discharge steam extended to turbine rotor. In axial direction and exhaust outlet 4 is used as so as to, the housing of low-pressure steam turbine 3 with the rear side of the opposite side of high-pressure steam turbine 2 And be open.
Condenser 30 is condenser corresponding with axle stream discharge type steamturbine, and it is configured at after low-pressure steam turbine 3 Side.The condenser 30 has:Heat transfer tube group 32, is made up of multiple heat-transfer pipes 31;Main body 35, coats heat transfer tube group 32;It is middle Body 41, links both between low-pressure steam turbine 3 and main body 35;Pass-out steam acceptance division 51, is received from side The steam of logical high pressure vapor line 12 is bypass high pressure steam BHS and the steam i.e. side from bypass reheated steam pipeline 14 Logical reheated steam BRS;And water ejector (water ejection section) 56, the water from water pipe 18 is sprayed in condenser 30.Separately Outside, below, one of which in bypass high pressure steam BHS and bypass reheated steam BRS or both is referred to as bypassed sometimes Steam BS.
Rear interval configuration of the main body 35 in low-pressure steam turbine 3.Middle body 41 is from low-pressure steam turbine 3 Exhaust outlet 4 rearward extends, and links the exhaust outlet 4 and main body 35 of low-pressure steam turbine 3.In being connected with main body 35 Between body 41 part be main body 35 sidepiece, and for the side of low-pressure steam turbine 3.The company with middle body 41 of main body 35 Connect outs open.The steam discharged from low-pressure steam turbine 3 be discharge steam ES via middle body 41 from the opening (it is following, It is used as discharge steam inlet 36) flow into main body 35.So as to which middle body 41 is formed from low-pressure steam turbine 3 Discharge steam ES guides a part for the steam primary flow path 42 to the heat transfer tube group 32 in main body 35.In addition, steam primary flow path 42 by the inner space of middle body 41 and in main body 35 from the discharge steam inlet 36 of main body 35 to heat transfer tube group 32 Between space constitute.In the multiple heat-transfer pipes 31 for constituting heat transfer tube group 32, the cooling medium such as having seawater flows.It is each to pass Heat pipe 31 makes the cooling medium internally flowed and outside discharge steam ES carry out heat exchange, and discharge steam ES is condensed it After revert to water.The lower inside of main body 35 constitutes the hot well stored by the water discharged steam ES condensation and obtained 38.Condenser pipe 16 is connected with the bottom of the main body 35.
Pass-out steam acceptance division 51 has:Pass-out steam receiving magazine 52, is internally formed the space for receiving pass-out steam BS; High-pressure steam ejector 53, is connected to bypass high pressure steam pipework 12, and the injection bypass high pressure in pass-out steam receiving magazine 52 Steam BHS;And reheated steam injector 54, bypass reheated steam pipeline 14 is connected to, and sprayed in pass-out steam receiving magazine 52 Penetrate bypass reheated steam BRS.
Pass-out steam receiving magazine 52 is connected and fixed on the top of main body 35.Pass-out steam receiving magazine 52 and main body 35 Coupling part opening, the bypass in pass-out steam receiving magazine 52 is ejected into from the opening (following, to be used as pass-out steam entrance 37) Steam BS is flowed into main body 35.High-pressure steam ejector 53 and reheated steam injector 54 are to form multiple pass through in pipe arrangement Wear the antipriming pipe of sky.Also, in the pass-out steam receiving magazine 52 and high-pressure steam ejector 53 and reheated steam injector 54 Lower position, in other words, water ejector 56 is configured with the position of the side of heat transfer tube group 32.The water ejector 56 is set on pipe arrangement There is the nozzle of multiple injection waters.Multiple nozzles are arranged at the top of pipe arrangement and upward, i.e., towards high-pressure steam ejector 53 And the side spray jetting of reheated steam injector 54.
Then, the action to steam turbine plant described above is illustrated.
The steam produced in steam generator 1 is flowed into high pressure via high pressure vapor line 11 as high steam HS In the housing of steamturbine 2, and drive the high-pressure steam turbine 2.Now, 21 pairs of high pressure steam control valve is flowed into high steam The flow of high steam HS in the housing of turbine 2 is adjusted.It is arranged at the open and close valve 22 of bypass high pressure steam pipework 12 In full-shut position.From high-pressure steam turbine 2 discharge high steam HS via exhaust high pressure vapor line 15 be flowed into reheater 6 And be reheated.By reheater 6, heated steam is flowed into low via reheated steam pipeline 13 as reheated steam RS In the housing for pressing steamturbine 3, and drive the low-pressure steam turbine 3.Now, 23 pairs of reheated steam regulating valve is flowed into low pressure steaming The flow of reheated steam RS in the housing of steam turbine 3 is adjusted.Also, it is arranged at the opening and closing of bypass reheated steam pipeline 14 Valve 24 is in full-shut position.
If driving high-pressure steam turbine 2 and low-pressure steam turbine 3, generator 5 is generated electricity.
Drive the reheated steam RS of low-pressure steam turbine 3 from the exhaust outlet 4 of low-pressure steam turbine 3 as discharge steam ES Discharge, after the middle body 41 by condenser 30, is flowed into the heat transfer tube group 32 in main body 35.Discharge steam ES is flowed into heat transfer tube group 32 after from the exhaust outlet 4 of low-pressure steam turbine 3 by the steam primary flow path 42 in condenser 30 In.Now, lateral region 33 opposed with the discharge steam inlet 36 of main body 35 from heat transfer tube group 32 discharge steam ES Mainly flow into heat transfer tube group 32.In addition, " mainly flowing into " here be represent from heat transfer tube group 32 with main body 35 The opposed lateral region 33 in discharge steam inlet 36, most discharge steam ES are flowed into heat transfer tube group 32.
The discharge steam ES around heat transfer tube group 32 is flowed into heat transfer tube group 32 or reaches, with constituting heat-transfer pipe The cooling medium of flowing condensed and as water after heat exchange in the heat-transfer pipe 31 of group 32.The water is stored under main body 35 In the hot well 38 of side.The water stored in hot well 38 returns to steam hair via condenser pipe 16, feed pump 7, supply line 17 Raw device 1.Now, the flow for the water that 27 pairs of feed-regulating valve is flowed into steam generator 1 is adjusted.Also, spray water control valve 28 are in full-shut position.
In such as above stable operation, for example, in the finger stopped by the power supply from the power system for being connected to generator 5 Show, make when high-pressure steam turbine 2 and the stopping of low-pressure steam turbine 3, high pressure steam control valve 21 and reheated steam are adjusted Save valve 23 turns into full-shut position from opening.Also, bypass high pressure steam pipework 12 and bypass reheated steam pipe will be provided with The open and close valve 22,24 on road 14 turns into full-gear from full-shut position.As a result, the high steam HS from steam generator 1 makees Sprayed for bypass high pressure steam BHS via high pressure vapor line 11, bypass high pressure steam pipework 12 and high-pressure steam ejector 53 Into pass-out steam receiving magazine 52.Also, the reheated steam RS from reheater 6 is as bypass reheated steam BRS via reheating Steam pipework 13, bypass reheated steam pipeline 14 and reheated steam injector 54 are ejected into pass-out steam receiving magazine 52.Due to The bypass high pressure steam BHS being ejected into pass-out steam receiving magazine 52 does not work in high-pressure steam turbine 2, therefore compared in height The high steam HS worked in pressure steamturbine 2 is high temperature and high pressure.Also, due to being ejected into pass-out steam receiving magazine 52 Bypass reheated steam BRS does not work in low-pressure steam turbine 3, therefore compared to the reheated steam worked in low-pressure steam turbine 3 RS (discharge steam ES) is high temperature and high pressure.So as to flow into compare in pass-out steam receiving magazine 52 and be flowed via middle body 41 The discharge steam ES entered into main body 35 is high temperature and the pass-out steam BS of high pressure.
In the above case, and then spray water control valve 28 is opened, a part for the water from feed pump 7 is via water pipe 18 and water ejector 56 be ejected into pass-out steam receiving magazine 52.It is ejected into water and high temperature and height in pass-out steam receiving magazine 52 The pass-out steam BS of pressure carries out heat exchange, so as to reduce pass-out steam BS temperature.Also, it is ejected into the pass-out steam receiving magazine Water in 52 plays a role as the heavy curtain (curtain) for pass-out steam BS, suppresses pass-out steam BS and is flowed into master In body 35.In addition, the overwhelming majority turns into steam to water in this process.
Pass-out steam BS and it is flowed into heat-transfer pipe as the water of steam by carrying out heat exchange with pass-out steam BS In group 32.Now, top opposed with the pass-out steam entrance 37 of main body 35 from heat transfer tube group 32 pass-out steam BS etc. Region 34 is mainly flowed into heat transfer tube group 32.It is flowed into heat transfer tube group 32 or reaches the bypass around heat transfer tube group 32 Condense and turn into after steam BS etc., with the cooling medium progress heat exchange of the flowing in the heat-transfer pipe 31 for constituting heat transfer tube group 32 Water.The water is stored in the hot well 38 of the lower section of main body 35.A part for water in hot well 38 is stored via condenser pipe 16th, feed pump 7, supply line 17 and return to steam generator 1.Also, remaining water sprays via water pipe 18 and water Device 56 and be ejected into pass-out steam receiving magazine 52.
As described above, in the present embodiment, discharge steam ES passes through after steam primary flow path 42, from heat transfer tube group 32 Sidepiece and with the opposed region 33 in discharge steam inlet 36 of main body 35, mainly flow into heat transfer tube group 32, with this phase Right, pass-out steam BS is mainly flowed into heat transfer tube group 32 from the upper area 34 of heat transfer tube group 32.I.e. in the present embodiment, Region 33 and pass-out steam BS in the heat transfer tube group 32 that discharge steam ES is flowed into heat transfer tube group 32 are flowed into heat transfer tube group Region 34 in heat transfer tube group 32 in 32 is different.Therefore, in the present embodiment, the local damage of heat transfer tube group 32 can be suppressed Wound.
However, in the case that pass-out steam BS is guided into the middle body 41 to condenser 30, make high temperature and high pressure , it is necessary to make pass-out steam BS be flowed into main body 35, according to the necessity after the pass-out steam BS a certain degree of energy dissipation Property, the length of middle body 41.Also, the high temperature and the bypass of high pressure in this case, being flowed into middle body 41 Steam BS is to steamturbine side adverse current, it is thus possible to can be damaged turbine rotor and its bearing and axle envelope of steamturbine etc..Separately Outside, in this case, pass-out steam BS steam jet ejector or the relation of water ejector are sprayed into middle body 41 in configuration On, the discharge steam ES passed through in middle body 41 resistance becomes big.
However, in the present embodiment, due to being provided with pass-out steam acceptance division 51 outside steam primary flow path 42, therefore with Guide the situation to the middle body 41 of condenser 30 to compare pass-out steam BS, the length of middle body 41 can be shortened, and The installation space of steam turbine plant can be effectively utilized.Also, in the present embodiment, because pass-out steam BS will not be straight Connect in the steam primary flow path 42 being flowed into middle body 41, therefore pass-out steam BS is to the possibility pole of steamturbine side adverse current It is low, and the impaired of the turbine rotor and its bearing and axle envelope of steamturbine etc. can be suppressed.In addition, in the present embodiment, not The steam jet ejector or water ejector that pass-out steam BS is sprayed into middle body 41 are configured, therefore, it is possible to reduce in middle body The discharge steam ES passed through in 41 resistance.
" second embodiment "
The second embodiment of steam turbine plant involved in the present invention is illustrated with reference to Fig. 2.
The steam turbine plant of present embodiment and the steam turbine plant of first embodiment are essentially identical.But, In present embodiment, condenser 30a pass-out steam acceptance division 51a is arranged at main body 35a sidepiece, and this point is real with first Apply mode different.
Identically with the pass-out steam acceptance division 51 of first embodiment, the pass-out steam acceptance division 51a of present embodiment Also there is pass-out steam receiving magazine 52, high-pressure steam ejector 53 and reheated steam injector 54.Pass-out steam receiving magazine 52 connects Connect the sidepiece for being fixed on main body 35a and the portion of the opposite side of the part of middle body 41 is connected with the basis of heat transfer tube group 32 Point.The coupling part opening of pass-out steam receiving magazine 52 and main body 35a, the opening is constituted from pass-out steam receiving magazine 52 Pass-out steam BS is flowed into the pass-out steam entrance 37a in main body 35a.
As described above, in the present embodiment, discharge steam ES is after in middle body 41, from heat transfer tube group 32 Sidepiece and with the main body 35a opposed region 33 in discharge steam inlet 36, mainly flow into heat transfer tube group 32, with this phase It is right, pass-out steam BS from the basis of heat transfer tube group 32 with discharge steam inlet 36 opposite side 37a pairs of pass-out steam entrance The region 34a put, is mainly flowed into heat transfer tube group 32.I.e., in the present embodiment, identically with first embodiment, arrange The region 33 and pass-out steam BS gone out in the heat transfer tube group 32 that steam ES is flowed into heat transfer tube group 32 is flowed into heat transfer tube group 32 In heat transfer tube group 32 in region 34a it is different.Also, identically with first embodiment, also steaming in the present embodiment Pass-out steam acceptance division 51a is provided with outside vapour primary flow path 42.So as to also result in the present embodiment and the first embodiment party The essentially identical effect of formula.
But, in the present embodiment, due to being provided with pass-out steam acceptance division 51a in main body 35a sidepiece, because This, in the present embodiment, the usability of the plane installation space of steam turbine plant is poorer than first embodiment.The opposing party Face, in the present embodiment, on the basis of heat transfer tube group 32, bypass is provided with the opposite side for being connected with the middle side of body 41 Steam acceptance division 51a, therefore, compared with first embodiment, can further reduce pass-out steam BS inverse to steamturbine side The possibility of stream.
In addition, in first embodiment and second embodiment, the Jun Wei Shaft of low-pressure steam turbine 3 stream discharge type steam whirlpool Wheel, and condenser 30,30a are type corresponding with this, still, even if low-pressure steam turbine is side-exhaustion type steamturbine, And condenser is type corresponding with this, also each embodiment can be applicable the present invention identically with more than.In addition, in steam whirlpool In the case of taking turns as side-exhaustion type steamturbine, condenser arrangement is in the side of steamturbine.
" the 3rd embodiment "
The 3rd embodiment of steam turbine plant involved in the present invention is illustrated with reference to Fig. 3.
The constitutive requirements of the steam turbine plant of present embodiment are also set with the steamturbine of first and second embodiment Standby constitutive requirements are identical.But, it is used as the low-pressure steam turbine 3b of the constitutive requirements of the steam turbine plant of present embodiment And condenser 30b, with the low-pressure steam turbine 3 and condenser 30,30a of the steam turbine plant of first and second embodiment not Together.
The low-pressure steam turbine 3b of present embodiment is the lower discharge type steamturbine for discharging steam downward.Therefore, The downside of the low-pressure steam turbine 3b of present embodiment housing is open as exhaust outlet 4b.
Condenser 30b is, corresponding to lower discharge type steamturbine, and to be configured at low-pressure steam turbine 3b downside.With first And the condenser 30 of second embodiment, 30a are in the same manner, condenser 30b also has:Heat transfer tube group 32, cladding heat transfer tube group 32 main body 35b, the middle body 41b of both links, bypass steaming between low-pressure steam turbine 3b and main body 35b Vapour acceptance division 51b and water ejector 56 (water ejection section).
Lower section interval configurations of the main body 35b in low-pressure steam turbine 3b.Middle body 41b is from low-pressure steam turbine 3b exhaust outlet 4b extends downward, and links low-pressure steam turbine 3b exhaust outlet 4b and main body 35b.In main body 35b In be connected with middle body 41b part be main body 35b top.The main body 35b coupling part with middle body 41b Opening, the opening constitutes the discharge steam inlet 36b that discharge steam ES is flowed into main body 35b.So as in present embodiment In, middle body 41b, which is also formed, guides the discharge steam ES from low-pressure steam turbine 3b to the heat-transfer pipe in main body 35b The steam primary flow path 42b of group 32 part.Also, in the present embodiment, main body 35b lower inside, which is also constituted, stores By the hot well 38 for the water discharged steam ES condensation and obtained.
Identically with embodiment of above, pass-out steam acceptance division 51b has:Pass-out steam receiving magazine 52, injection bypass High steam BHS high-pressure steam ejector 53, injection bypass reheated steam BRS reheated steam injector 54.
Pass-out steam receiving magazine 52 is connected and fixed on main body 35b sidepiece.Pass-out steam receiving magazine 52 and main body 35b Coupling part opening, the opening constitutes pass-out steam BS and is flowed into pass-out steam entrance 37b in main body 35b.With first And second embodiment is in the same manner, high-pressure steam ejector 53 and reheated steam injector 54 are configured in pass-out steam receiving magazine In 52.Also, identically with first and second embodiment, water ejector 56 is also disposed in pass-out steam receiving magazine 52 and ratio The position of high-pressure steam ejector 53 and reheated steam injector 54 closer to the side of heat transfer tube group 32.Multiple sprays of water ejector 56 Mouth is towards high-pressure steam ejector 53 and the side spray jetting of reheated steam injector 54.
As described above, in the present embodiment, discharge steam ES is after middle body 41b is passed through, from heat transfer tube group 32 In upper area 33b mainly flow into heat transfer tube group 32, on the other hand, pass-out steam BS is from the sidepiece in heat transfer tube group 32 Region 34b is mainly flowed into heat transfer tube group 32.I.e., identically with first and second embodiment, in the present embodiment, arrange The region 33b and pass-out steam BS gone out in the heat transfer tube group 32 that steam ES is flowed into heat transfer tube group 32 is flowed into heat transfer tube group 32 In heat transfer tube group 32 in region 34b it is different.Also, identically with first and second embodiment, in the present embodiment, Pass-out steam acceptance division 51b is also equipped with outside steam primary flow path 42b.So as in the present embodiment, also result in and the One and the essentially identical effect of second embodiment.I.e., in the present embodiment, the local damage of heat transfer tube group 32 can also be suppressed Wound.Also, in the present embodiment, compared with pass-out steam BS to be guided to the situation to condenser 30b middle body 41b, Middle body 41b length can be shortened.In addition, in the present embodiment, can also make pass-out steam BS to low-pressure steam whirlpool The possibility for taking turns 3b sides adverse current is extremely low, and can reduce the discharge steam ES passed through in middle body 41b resistance.
More than, such as present embodiment, though low-pressure steam turbine 3b is lower discharge type steamturbine, and condenser 30b For type corresponding with this, the present invention can be also applicable.That is, as described above, no matter steamturbine Wei Shaft flow discharge type or side The horizontal exhaust type steamturbine of discharge type, or steamturbine are lower discharge type steamturbine, according to the exhaust of steamturbine Type can be applicable the present invention.
" the first variation of condenser "
The first variation of the condenser 30 in first embodiment is illustrated with reference to Fig. 4.
In condenser 30 in first embodiment, in pass-out steam receiving magazine 52, and than high-pressure steam ejector 53 And reheated steam injector 54 is configured with water ejector 56 closer to the position of the side of heat transfer tube group 32.In the condenser of this variation In 30c, in pass-out steam acceptance division 51c pass-out steam receiving magazine 52, and than high-pressure steam ejector 53 and reheated steam Injector 54 is configured with water ejector 56 further from the position of the side of heat transfer tube group 32.In other words, in this variation, than Water ejector 56 is configured with high-pressure steam ejector 53 and reheated steam injector 54 closer to the position of the side of heat transfer tube group 32. Identically, the nozzle of water ejector 56 is to high-pressure steam ejector 53 and the side of reheated steam injector 54 for each embodiment with more than Injection water.So as in this variation, can also utilize the water cooling sprayed from water ejector 56 from high-pressure steam ejector 53 And reheated steam injector 54 is ejected into the pass-out steam BS in pass-out steam receiving magazine 52.
In addition, variation of this variation for the condenser 30 in first embodiment, still, second and third embodiment party Condenser 30a, 30b of formula also can be deformed equally.
" the second variation of condenser "
It is that the second variation is illustrated to another variation of the condenser 30c in the first variation with reference to Fig. 5.
The condenser 30d of this variation is the additional condensation for flowing suppression component on the condenser 30c of the first variation Device, the flowing suppression component suppresses the pass-out steam BS courts received by condenser 30c pass-out steam acceptance division 51c Flowed to heat transfer tube group 32.The flowing suppression component is the high-pressure steam ejector 53 in pass-out steam receiving magazine 52, reheating The aggregate of steam jet ejector 54 and water ejector 56 is configuration between the heat transfer tube group 32 in injector group 55 and main body 35 Shock plate 58.The shock plate 58 along with the connecing towards heat transfer tube group 32 from injector group 55 or pass-out steam acceptance division 51c Receipts portion-pipe prescription is to vertical Directional Extension.
Such as this variation, by the way that shock plate 58 is configured between injector group 55 and heat transfer tube group 32, from injector 55 sides of group are flowed into the flow velocity reduction of the steam in heat transfer tube group 32, can further suppress the damage of heat transfer tube group 32.
" the 3rd variation of condenser "
It is that the 3rd variation is illustrated to another variation of the condenser 30c in the first variation with reference to Fig. 6.
Identically with the second variation, the condenser 30e of this variation is also to be chased after on the condenser 30c of the first variation Plus the condenser of flowing suppression component, the pass-out steam acceptance division 51c that the flowing suppression component suppression passes through condenser 30c Flowed the pass-out steam BS that receives towards heat transfer tube group 32.The flowing suppression component of this variation is in injector group 55 and master The multiple impact bars 59 configured between heat transfer tube group 32 in body 35.Multiple impact bars 59 each along with from injector group 55 or Pass-out steam acceptance division 51c extends towards acceptance division-pipe prescription of heat transfer tube group 32 to vertical direction, and with acceptance division- Pipe prescription to and the vertical direction in the direction that is extended of each impact bar 59 on be spaced apart interval configuration.
In this variation, also multiple impact bars 59 are configured between injector group 55 and heat transfer tube group 32, thus from Injector group 55 is flowed into the flow velocity reduction of the steam in heat transfer tube group 32, can further suppress the damage of heat transfer tube group 32.
In addition, in the second variation and the 3rd variation, flowing suppression component is configured in main body 35, but stream As long as dynamic suppression component is configured between injector group 55 and heat transfer tube group 32, then pass-out steam receiving magazine 52 can also be configured at It is interior.
Also, the second variation and the variations of び the 3rd are the variation of the condenser 30 in the first variation, still, First so the 3rd the condenser of embodiment also can equally be deformed.
However, in condenser 30c in the first variation, high-pressure steam ejector 53 and reheated steam injector 54 compare Water ejector 56 more leans on the position of the side of heat transfer tube group 32, it is impossible to which expectation is suppressed bypass using the water sprayed from water ejector 56 and steamed The curtain effect that vapour BS flows towards heat transfer tube group 32.Therefore, compared with the condenser in embodiment of first or even the 3rd, To first so that the 3rd embodiment the first variation in condenser set flowing suppression component can be more effective.
" other variations "
More than each embodiment and each variation, by the present invention be applied to possess high-pressure steam turbine, low-pressure steam turbine, And in the steam turbine plant for the condenser that the discharge steam from low-pressure steam turbine is reverted into water.However, it is also possible to will The present invention is applied to possess high-pressure steam turbine, middle pressure steam turbine, low-pressure steam turbine and will come from these steamturbines Any steamturbine the discharge steam ES condensers that revert to water steam turbine plant in.Alternatively, it is also possible to which this is sent out A kind of steam of the bright condenser for being applied to possess steamturbine and the discharge steam from the steamturbine is reverted to water In turbine device.As long as that is, possess the steam turbine plant of steamturbine and condenser corresponding with this, then can be any Steam turbine plant in adaptation the present invention.
Industrial applicability
According to a kind of mode of the present invention, the local damage of heat transfer tube group can be suppressed.
Symbol description
1- steam generators (steam feeder), 2- high-pressure steam turbines, 3,3b- low-pressure steam turbines (or abbreviation steam Turbine), 5- generators, 6- reheaters (steam feeder), 7- feed pumps, 11- high pressure vapor lines, 12- bypass high pressure steam Pipeline, 13- reheated steam pipelines, 14- bypass reheated steam pipelines, 15- exhaust high pressure vapor lines, 16- condenser pipes, 17- Supply line, 18- water pipes, 30,30a, 30b, 30c, 30d, 30e- condenser, 31- heat-transfer pipes, 32- heat transfer tube groups, 33, 33b, 34,34a, 34b- region, 35, the main body of 35a, 35b-, 36,36b- discharges steam inlet (opening), 37, by 37a, 37b- Logical steam inlet (opening), 41- centres body, 42- steam primary flow paths, 51,51a, 51b, 51c- pass-out steam acceptance division, 52- Pass-out steam receiving magazine, 53- high-pressure steam ejectors, 54- reheated steam injectors, 55- injector groups, 56- water ejector (water Ejection section), 58- shock plates, 59- impact bars.

Claims (5)

1. a kind of condenser, it possesses:
Heat transfer tube group, by the medium of the discharge steam progress heat exchange with being discharged from steamturbine by inside, and makes the discharge Multiple heat-transfer pipes that steam reverts to water are constituted;
Main body, coats the heat transfer tube group;
Middle body, links both, and form steam primary flow path, the steaming between the steamturbine and the main body Vapour primary flow path is used to guide the discharge steam to the heat transfer tube group in the main body from the steamturbine;And
Pass-out steam acceptance division, receives the pass-out steam for bypassing the steamturbine, and through being formed from opening for the main body Mouthful, the pass-out steam is guided to the heat transfer tube group in the main body,
The direction of principal axis that the steamturbine is extended for the rotor towards the steamturbine, or towards the side of the steamturbine The horizontal exhaust type steamturbine of steam is discharged,
The middle body is linked to the sidepiece of the main body,
The pass-out steam acceptance division is configured at outside the steam primary flow path, and the pass-out steam acceptance division is arranged at the main body The top of body, or the main body sidepiece and be connected with the basis of the heat transfer tube group part of the middle body Opposite side point,
The opening of the main body is formed at following location, i.e., from the region different from inflow region, the pass-out steam is main Be flowed into the position in the heat transfer tube group, the inflow region for the discharge steam by the steam primary flow path it Afterwards, the region in the heat transfer tube group is mainly flowed into.
2. condenser according to claim 1, wherein,
Possesses flowing suppression component, the flowing suppression component suppresses the side received by the pass-out steam acceptance division Logical steam flows towards the heat transfer tube group.
3. condenser according to claim 1, wherein,
Possesses the water ejection section to injection water in the pass-out steam acceptance division.
4. a kind of steam turbine plant, it possesses:
Condenser according to any one of claim 1 to 3;
The steamturbine;
Steam feeder, steam is supplied to the steamturbine;And
Pass-out steam pipeline, using the steam from the steam feeder as the pass-out steam, make the steam around Cross after the steamturbine, guiding to the pass-out steam acceptance division.
5. a kind of steam turbine plant, it possesses:
Condenser according to claim 3;
The steamturbine;
Steam feeder, steam is supplied to the steamturbine;
Feed pump, in the condenser, makes the water obtained by the condensation of the discharge steam return to the steam and supplies To device;
Pass-out steam pipeline, using the steam from the steam feeder as the pass-out steam, make the steam around Cross after the steamturbine, guiding to the pass-out steam acceptance division;And
Water pipe, by pressurized water is guided to the water ejection section by the feed pump.
CN201480005674.9A 2013-03-27 2014-03-13 Condenser and the steam turbine plant for possessing condenser Expired - Fee Related CN104937339B (en)

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KR20150100886A (en) 2015-09-02
EP2980474B1 (en) 2020-02-19
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JP6221168B2 (en) 2017-11-01
US20160017756A1 (en) 2016-01-21

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