CN110319713B - Arrangement structure of natural ventilation direct air cooling and smoke tower integrated combined unit - Google Patents

Arrangement structure of natural ventilation direct air cooling and smoke tower integrated combined unit Download PDF

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Publication number
CN110319713B
CN110319713B CN201910684520.1A CN201910684520A CN110319713B CN 110319713 B CN110319713 B CN 110319713B CN 201910684520 A CN201910684520 A CN 201910684520A CN 110319713 B CN110319713 B CN 110319713B
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Prior art keywords
room
steam
steam turbine
pipeline
tower
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CN110319713A (en
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宋江文
李涛
刘欣
王浩
郑冠捷
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/02Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/006Layout of treatment plant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00Direct-contact trickle coolers, e.g. cooling towers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00Direct-contact trickle coolers, e.g. cooling towers
    • F28C2001/006Systems comprising cooling towers, e.g. for recooling a cooling medium

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention discloses an arrangement structure of a natural ventilation direct air cooling and smoke tower integrated combined unit, which is suitable for a new thermal power plant unit integrating a smoke tower and adopting a natural ventilation direct air cooling system for cooling exhaust steam of a steam turbine. The arrangement structure longitudinally arranges the steam turbine room on the furnace side of the boiler, the steam turbine room and the boiler room 2 are L-shaped, and the steam turbine room and the boiler room are surrounded by the cooling tower 1. The scheme is favorable for shortening the length of the exhaust pipeline and the length of the flue of the natural ventilation direct air cooling and flue gas tower integrated unit, can save the initial investment of engineering, can reduce the pressure loss of the pipeline, and reduces the running back pressure of the turbine unit and the electric power of the induced draft fan.

Description

Arrangement structure of natural ventilation direct air cooling and smoke tower integrated combined unit
Technical Field
The invention relates to a cooling system of a thermal power plant, in particular to an arrangement structure of a natural ventilation direct air cooling and smoke tower integrated unit.
Background
Compared with the traditional mechanical ventilation mode, the natural ventilation direct air cooling system omits a high-power axial flow fan, saves the station power consumption of the power plant, has obvious water conservation and economy, and has been successfully applied to the thermal power plant in the coal-rich water-deficient area.
The flue gas tower integrated technology eliminates a chimney, arranges a desulfurization tower in the middle of a cooling tower, and lifts the height of flue gas generated by a boiler by means of hot air of the cooling tower after desulfurization. The smoke tower integrated technology saves project land and investment, improves energy utilization rate, and is applied to a large number of projects.
The natural ventilation direct air cooling system requires that the cooling tower is close to the steam turbine exhaust port as much as possible, the smoke tower is integrated, the cooling tower is close to the tail flue of the boiler room, and the requirements of the cooling tower and the smoke tower on the position of the cooling tower are completely opposite. The existing main workshop arrangement mode is that a steam turbine room, a coal bunker room and a boiler room are arranged in a straight line, a flue of the boiler room and the steam turbine room are respectively positioned at two ends of the boiler room, and the distance between the flue and a steam turbine exhaust port cannot be considered at the same time by the position of a cooling tower.
Therefore, in the current engineering application, the same engineering only adopts a natural ventilation direct air cooling system or a smoke tower integrated system, and when the smoke tower integrated system is adopted, the exhaust steam of the steam turbine is required to be indirectly cooled, so that the back pressure of the steam turbine is higher, and the operation efficiency of the steam turbine is reduced; when the natural ventilation direct air cooling system is adopted, the chimney is adopted to discharge the smoke, so that the occupied area and the engineering cost are increased.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an arrangement structure of a natural ventilation direct air cooling and smoke tower integrated combined unit, and the arrangement mode of the existing steam turbine room is changed, so that a steam exhaust pipeline from a steam turbine to a cooling tower and a flue from an induced draft fan to the cooling tower are optimized, and the problem that the natural ventilation direct air cooling and smoke tower integrated unit cannot operate simultaneously in the existing engineering is solved.
The invention is realized by the following technical scheme:
a natural ventilation direct air cooling and smoke tower combined unit arrangement structure comprises a cooling tower, a desulfurizing tower, a boiler room, a steam turbine room and a coal bunker room.
The desulfurization tower is arranged in the cooling tower, the steam turbine room is positioned at the furnace side end of the boiler room, the cooling tower and the steam turbine room are arranged at the same side of the boiler room, and the coal bin is positioned at the furnace front end of the boiler room and is adjacent to the boiler room;
the flue at the rear end of the boiler room furnace is connected with a desulfurizing tower, the boiler in the boiler room is connected with a steam turbine in a steam turbine room, and the steam turbine is connected with a cooling tower.
Preferably, the flue is arranged on a radius extension line of the cooling tower, and the extension line is the shortest extension line from the desulfurizing tower to the boiler room.
Preferably, the head of the steam turbine in the steam turbine room faces the direction of the boiler room, and the main steam pipeline, the cold reheat steam pipeline and the hot reheat steam pipeline of the boiler directly enter the steam turbine room from the side of the boiler and are connected with a steam inlet valve and a cylinder steam outlet of the steam turbine.
Preferably, the steam turbine further comprises a transformer area, wherein the transformer area is positioned between the steam turbine room and the cooling tower or positioned at one side of the steam turbine room and symmetrically arranged at two sides of the steam turbine room with the boiler room.
Preferably, a steam turbine in the steam turbine room is connected with the cooling tower through a steam exhaust pipeline, one end of the steam exhaust pipeline is connected with a steam exhaust port of the steam turbine, and the other end of the steam exhaust pipeline is connected with a cooling system of the cooling tower;
when the transformer area is positioned at one side of the steam turbine room, the steam exhaust pipeline is arranged on a radius extension line of the cooling tower, and the extension line is the shortest extension line from the cooling tower to the steam turbine room.
Preferably, when the transformer area is located between the steam turbine room and the cooling tower, the steam exhaust pipeline comprises a first pipeline and a second pipeline, the first pipeline extends from the steam exhaust port of the steam turbine to the direction of the cooling tower until the first pipeline passes through the transformer area, the end part of the first pipeline is flush with the side edge of the transformer area, the second pipeline is arranged on the extension line of the radius of the cooling tower, one end of the second pipeline is connected with the first pipeline, and the other end of the second pipeline is connected with the cooling system.
Preferably, the number of the combined units is two, the two combined units are symmetrically arranged along the coal bunker, and a centralized control room is arranged between the two steam turbine rooms. Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides an arrangement structure of a natural ventilation direct air cooling and smoke tower integrated unit, which can enable a natural ventilation direct air cooling system and smoke tower integrated technology to be applied to one project at the same time, compared with the existing arrangement mode, a steam turbine room is arranged on the side surface of a boiler room, so that the whole of the steam turbine room and the boiler room is in an L-shaped structure, the steam turbine room and the boiler room accord with project construction standards, and meanwhile, the distance between the steam turbine room and a cooling tower is greatly shortened, and therefore, the lengths of pipelines of a steam turbine exhaust pipe and the cooling system in the cooling tower are shortened; meanwhile, the length of the flue of the boiler room and the length of the pipeline of the cooling tower are shortened, the length of the flue and the length of the steam turbine exhaust pipe are shortened and optimized, the primary investment of engineering is reduced, the pipeline resistance is reduced, the back pressure of the turbine set is reduced, the electric power of the induced air is reduced, the effect of reducing the heat consumption of the set and the power consumption of the plant is obvious, the problem that the natural ventilation direct air cooling and the smoke tower integration cannot be operated simultaneously in the existing engineering are solved, the cooling tower can cool the exhaust of the steam turbine, meanwhile, the height of the flue gas after desulfurization is raised, the engineering construction cost is reduced, and the land area is saved.
Drawings
FIG. 1 is a schematic layout of a combined unit of the present invention.
In the figure: 1. a cooling tower; 2. a boiler room; 3. a turbine room; 4. a transformer region; 5. a centralized control room; 6. a coal bunker bay; 7. a flue; 8. and a steam exhaust pipeline.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the invention.
Referring to fig. 1, an arrangement structure of a natural ventilation direct air cooling and smoke tower integrated unit comprises a cooling tower 1, a desulfurizing tower, a boiler room 2, a steam turbine room 3, a coal bunker 6 and a transformer area 4.
Wherein, the desulfurizing tower is arranged in the inside of cooling tower 1, and steam turbine room 3 is located the stove side end of boiler room 2, and cooling tower 1 and steam turbine room 3 are arranged in the homonymy of boiler room 2, and coal bunker bay 6 is located the boiler front end of boiler room 2, and coal bunker bay 6 is adjacent with boiler room 2, and transformer area 4 is arranged between cooling tower 1 and steam turbine room 3.
Compared with the existing arrangement mode, the arrangement structure of the combined unit has the advantages that the steam turbine room 3 is arranged on the side face of the boiler room 2, so that the steam turbine room 3 and the boiler room 2 are integrally of an L-shaped structure, the distance between the steam turbine room 3 and the cooling tower 1 is greatly shortened, and the length of a steam exhaust pipeline 8 between a steam exhaust port of a steam turbine and a cooling system in the cooling tower 1 is shortened; meanwhile, the lengths of the flue 7 of the boiler room 2 and the pipeline of the cooling tower 1 are shortened, so that the lengths of the flue 7 and the exhaust pipeline 8 of the steam turbine are shortened and optimized, the pipeline resistance is reduced, the back pressure of the steam turbine set is reduced, the electric power of the induced air fan is reduced, and the heat consumption of the set and the reduction effect of station service electricity are obvious.
The turbine head in the steam turbine room 3 is towards the direction of the boiler room 2, and the main steam pipeline, the cold reheat steam pipeline and the hot reheat steam pipeline of the boiler room 2 directly enter the steam turbine room 3 from the boiler side of the boiler and are connected with the steam inlet valve of the turbine and the steam outlet of the cylinder.
The flue 7 of the boiler in the boiler room 2 is connected with the desulfurizing tower in the cooling tower 1, and the steam exhaust pipeline 8 of the steam turbine exhaust port passes through the steam turbine room to be connected with the cooling system of the cooling tower 1.
As shown in fig. 1, the flue 7 longitudinally extends into the desulfurizing tower inside the cooling tower 1, and the flue gas is lifted to a high level by means of hot air of the cooling tower 1 after desulfurization, so that the shortest distance between the boiler and the desulfurizing tower 7 can be ensured according to the straight line principle, and the construction cost of the flue 7 is reduced.
In fig. 1, a transformer area 4 is arranged between a cooling tower 1 and a steam turbine room, so that the length of a bus can be reduced, a steam exhaust pipeline 8 comprises a first pipeline and a second pipeline, the first pipeline extends from the steam exhaust port of the steam turbine to the direction of the cooling tower 1 until penetrating through the transformer area 4, the end part of the first pipeline is flush with the side edge of the transformer area 4, the second pipeline is arranged on an extension line of the radius of the cooling tower 1, one end of the second pipeline is connected with the first pipeline, the other end of the second pipeline is connected with a cooling system, and the arrangement can enable the distance of the steam exhaust pipeline 8 to be shortest.
In another embodiment, the transformer area 4 is arranged at the end of the steam turbine room, symmetrically arranged on both sides of the steam turbine room 3 with the boiler room 2, the exhaust steam pipes 8 are arranged on the extension line of the radius of the cooling tower 1, one end of the exhaust steam pipe 8 is connected with the steam turbine, and the other end is connected with the cooling system, so that the exhaust steam pipe 8 can reach the shortest distance. Meanwhile, as the length of the steam exhaust pipeline is reduced, the back pressure of the turbine set can be reduced, the induced air electric power is reduced, and the effect of reducing the heat consumption of the set and the station service electricity is obvious.
In another embodiment, the two combined units are symmetrically arranged along the coal bunker bay 6, and the centralized control room 5 is arranged between two steam turbine rooms.
The arrangement structure of the natural ventilation direct air cooling and smoke tower integrated combined unit is suitable for a natural ventilation direct air cooling system adopted by steam turbine exhaust cooling and a new thermal power plant unit integrated by the smoke tower. The arrangement structure longitudinally arranges the steam turbine room at the boiler side, the steam turbine room and the boiler room 2 are L-shaped, and the steam turbine room and the boiler room encircle the cooling tower 1. The scheme is favorable for shortening the length of the exhaust pipeline and the length of the flue 7 of the natural ventilation direct air cooling and flue tower integrated unit, can save the initial investment of engineering, can reduce the pressure loss of the pipeline, and reduces the running back pressure of the turbine unit and the electric power of the induced draft fan.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (3)

1. The arrangement structure of the natural ventilation direct air cooling and smoke tower integrated combined unit is characterized by comprising a cooling tower (1), a desulfurizing tower, a boiler room (2), a steam turbine room (3), a coal bunker room (6) and a transformer area (4);
the desulfurization tower is arranged in the cooling tower (1), the steam turbine room (3) is positioned at the furnace side end of the boiler room (2), the cooling tower (1) and the steam turbine room (3) are arranged at the same side of the boiler room (2), and the coal room (6) is positioned at the furnace front end of the boiler room (2) and adjacent to the boiler room (2);
a flue (7) at the rear end of a boiler room (2) is connected with a desulfurizing tower, a boiler in the boiler room (2) is connected with a steam turbine in a steam turbine room (3), and the steam turbine is connected with a cooling tower (1);
the main steam pipeline, the cold reheat steam pipeline and the hot reheat steam pipeline of the boiler directly enter the steam turbine room (3) from the furnace side of the boiler and are connected with a steam inlet valve and a cylinder steam outlet of the steam turbine;
the transformer area (4) is positioned between the turbine room (3) and the cooling tower or is positioned at one side of the turbine room (3) and is symmetrically arranged at two sides of the turbine room (3) with the boiler room (2);
the steam turbine in the steam turbine room (3) is connected with the cooling tower (1) through a steam exhaust pipeline (8), one end of the steam exhaust pipeline (8) is connected with a steam exhaust port of the steam turbine, and the other end of the steam exhaust pipeline is connected with a cooling system of the cooling tower (1);
when the transformer area (4) is positioned at one side of the turbine room (3), the steam exhaust pipeline (8) is arranged on a radius extension line of the cooling tower, and the extension line is the shortest extension line from the cooling tower to the turbine room;
when transformer area (4) are located between steam turbine room (3) and cooling tower (1), exhaust steam pipe (8) include first pipeline and second pipeline, and first pipeline extends to cooling tower (1) direction from the steam outlet level of steam turbine, until pass transformer area (4), and the tip of first pipeline and the side parallel and level of transformer area (4), the second pipeline is arranged on the extension line of the radius of cooling tower (1), and the one end and the first pipeline of second pipeline are connected, and the other end is connected with cooling system.
2. The arrangement structure of the natural ventilation direct air cooling and smoke tower integrated unit according to claim 1, wherein the flue (7) is arranged on a radius extension line of the cooling tower (1), and the extension line is the shortest extension line from the desulfurizing tower to the boiler room (2).
3. The arrangement structure of the natural ventilation direct air cooling and smoke tower integrated unit according to claim 1, wherein the number of the combined units is two, the two combined units are symmetrically arranged along a coal bunker (6), and a centralized control chamber (5) is arranged between the two steam turbine rooms.
CN201910684520.1A 2019-07-26 2019-07-26 Arrangement structure of natural ventilation direct air cooling and smoke tower integrated combined unit Active CN110319713B (en)

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CN110319713B true CN110319713B (en) 2024-02-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114970204B (en) * 2022-06-24 2024-05-07 中国能源建设集团山西省电力勘测设计院有限公司 Method for determining arrangement orientation of direct air cooling platform of newly-built thermal power plant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2221014A5 (en) * 1973-03-06 1974-10-04 Inst Teploelektroproekt Central electricity generating station - comprises turbo-alternators, multiple boiler block, and single chimney
RU2115000C1 (en) * 1995-12-05 1998-07-10 Леонид Меерович Драбкин Combination boiler house
EP1607680A1 (en) * 2004-06-17 2005-12-21 General Electric Company Furnace with injection of overfire air
CN203948137U (en) * 2014-06-11 2014-11-19 内蒙古京能盛乐热电有限公司 For the circulating water pipeline layout of three tower unifications, two machine one towers
CN203947816U (en) * 2014-03-05 2014-11-19 内蒙古电力勘测设计院有限责任公司 A kind of indirect air cooling unit arrangement based on three tower unifications
CN205940191U (en) * 2016-07-22 2017-02-08 华北电力科学研究院(西安)有限公司 Three towers unification direct air cooling system
CN210268277U (en) * 2019-07-26 2020-04-07 中国电力工程顾问集团西北电力设计院有限公司 Arrangement structure of natural ventilation direct air cooling and smoke tower integrated combined unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2221014A5 (en) * 1973-03-06 1974-10-04 Inst Teploelektroproekt Central electricity generating station - comprises turbo-alternators, multiple boiler block, and single chimney
RU2115000C1 (en) * 1995-12-05 1998-07-10 Леонид Меерович Драбкин Combination boiler house
EP1607680A1 (en) * 2004-06-17 2005-12-21 General Electric Company Furnace with injection of overfire air
CN203947816U (en) * 2014-03-05 2014-11-19 内蒙古电力勘测设计院有限责任公司 A kind of indirect air cooling unit arrangement based on three tower unifications
CN203948137U (en) * 2014-06-11 2014-11-19 内蒙古京能盛乐热电有限公司 For the circulating water pipeline layout of three tower unifications, two machine one towers
CN205940191U (en) * 2016-07-22 2017-02-08 华北电力科学研究院(西安)有限公司 Three towers unification direct air cooling system
CN210268277U (en) * 2019-07-26 2020-04-07 中国电力工程顾问集团西北电力设计院有限公司 Arrangement structure of natural ventilation direct air cooling and smoke tower integrated combined unit

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