CN203239404U - 350MW-grade supercritical air-cooling industrial steam extraction steam turbine - Google Patents

350MW-grade supercritical air-cooling industrial steam extraction steam turbine Download PDF

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Publication number
CN203239404U
CN203239404U CN 201320276212 CN201320276212U CN203239404U CN 203239404 U CN203239404 U CN 203239404U CN 201320276212 CN201320276212 CN 201320276212 CN 201320276212 U CN201320276212 U CN 201320276212U CN 203239404 U CN203239404 U CN 203239404U
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China
Prior art keywords
overcritical
bearing housing
steam
cylinder
middle school
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Expired - Lifetime
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CN 201320276212
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Chinese (zh)
Inventor
周新灵
李兴东
翟玉琛
赵英英
王龙洋
王丽红
张涛
马秀琴
毕春媚
耿金环
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Harbin Turbine Co Ltd
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Harbin Turbine Co Ltd
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Priority to CN 201320276212 priority Critical patent/CN203239404U/en
Application granted granted Critical
Publication of CN203239404U publication Critical patent/CN203239404U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a 350MW-grade supercritical air-cooling industrial steam extraction steam turbine so as to solve the problem that an existing subcritical 300MW industrial steam extraction steam turbine is low in thermal efficiency, and belongs to the technical field of steam turbines. A first bearing box is arranged at the front end of a supercritical high/intermediate pressure combined cylinder. A second bearing box is arranged at the rear end of the supercritical high/intermediate pressure combined cylinder. A supercritical air-cooling low pressure cylinder is arranged at the rear end of the second bearing box. A third bearing box is arranged at the rear end of the supercritical air-cooling low pressure cylinder. A front cat pad and a rear cat pad on the supercritical high/intermediate pressure combined cylinder are connected with the first bearing box and the second bearing box. A high pressure main steam adjustment union valve is communicated with a high pressure steam inlet of the supercritical high/intermediate pressure combined cylinder through a high pressure steam guide pipe. A reheat main steam adjustment union valve is communicated with an intermediate pressure steam inlet of the supercritical high/intermediate pressure combined cylinder through an intermediate pressure steam guide pipe. The 350MW-grade supercritical air-cooling industrial steam extraction steam turbine is used for electricity generation.

Description

The overcritical air cooling extraction steam for factories of 350MW grade steam turbine
Technical field
The utility model relates to a kind of steam turbine, belongs to the steam turbine technology field.
Background technique
The domestic extraction steam for factories unit parameter that puts into operation at present be mainly subcritical or subcritical below, maximum capacity is 300MW, the maximum amount of drawing gas 320t/h, its thermal efficiency is lower, the capacity of unit and parameter grade have limited the development of the amount of drawing gas.Be energy saving, improve the steam parameter of conventional fired power generating unit and raise the efficiency, the overcritical air cooling extraction steam for factories of 350MW grade steam turbine has stronger vitality and the market competitiveness.
The model utility content
The purpose of this utility model provides the overcritical air cooling extraction steam for factories of a kind of 350MW grade steam turbine, for solving the existing low problem of subcritical 300MW extraction steam for factories turbine thermodynamic efficiency.
The technological scheme that the utility model is taked for achieving the above object is as follows:
The overcritical air cooling extraction steam for factories of 350MW grade of the present utility model steam turbine, it comprise overcritical senior middle school pressing cylinder, overcritical air cooling low pressure (LP) cylinder, number one bearing housing, No. second bearing housing, No. three bearing housing, two high pressure master vapour regulate union valve and two hotter main vapour regulate union valve, described overcritical senior middle school pressing cylinder is provided with front ram's horn and rear ram's horn; Described number one bearing housing is arranged on the front end of overcritical senior middle school pressing cylinder, No. second bearing housing is arranged on the rear end of critical senior middle school pressing cylinder, overcritical air cooling low pressure (LP) cylinder is arranged on the rear end of No. second bearing housing, No. three bearing housing is arranged on the rear end of overcritical air cooling low pressure (LP) cylinder, and number one bearing housing, overcritical senior middle school pressing cylinder, No. second bearing housing, the central lines of overcritical air cooling low pressure (LP) cylinder and No. three bearing housing, front ram's horn on the overcritical senior middle school pressing cylinder is connected with the number one bearing housing, rear ram's horn on the overcritical senior middle school pressing cylinder is connected with No. second bearing housing, the number one bearing housing, No. second bearing housing, No. three bearing housing and overcritical air cooling low pressure (LP) cylinder land alone respectively setting, the high pressure master vapour that each side is provided with of overcritical senior middle school pressing cylinder is regulated union valve, each high pressure master vapour is regulated union valve and is connected with the high-pressure admission mouth of overcritical senior middle school pressing cylinder by highpressure steam conduit tube, the number one bearing housing each side be provided with one hotter main vapour regulate union valve, each hotter main vapour regulate union valve and be connected by compressing into steam ports in middle pressure steam guiding tube and the overcritical senior middle school pressing cylinder.
The beneficial effects of the utility model are: the utility model adopts overcritical steam inlet condition, and main steam pressure is 24.2MPa, and the temperature of main steam and reheated steam is 566 ℃, and the maximum amount of drawing gas is 400t/h.The utlity model has simple in structure, complete machine connection and reasonable arrangement, the advantage of generatine set heat efficiency high (hear rate 7854.3kJ/kW.h during back pressure 14kPa).Consider from the energy-saving and environmental protection angle, under same boundary conditions, compare with Subcritical Units and can reduce hear rate 200kJ/kW.h, 350MW ultra-high parameter, large capacity unit as the extraction steam for factories unit, are had larger Social benefit and economic benefit.
Description of drawings
Fig. 1 is the plan view of the overcritical air cooling extraction steam for factories of 350MW grade of the present utility model steam turbine, and Fig. 2 is the plan view of Fig. 1, and Fig. 3 is the A place partial enlarged drawing of Fig. 1, and Fig. 4 is the B place partial enlarged drawing of Fig. 2, and Fig. 5 is the C place partial enlarged drawing of Fig. 2.
Embodiment
Embodiment one: in conjunction with Fig. 1~Fig. 5 explanation, the overcritical air cooling extraction steam for factories of the 350MW grade steam turbine of present embodiment, it comprise overcritical senior middle school pressing cylinder 1, overcritical air cooling low pressure (LP) cylinder 2, number one bearing housing 3, No. second bearing housing 4, No. three bearing housing 5, two high pressure master vapour regulate union valve 6 and two hotter main vapour regulate union valve 7, described overcritical senior middle school pressing cylinder 1 is provided with front ram's horn and rear ram's horn; Described number one bearing housing 3 is arranged on the front end of overcritical senior middle school pressing cylinder 1, No. second bearing housing 4 is arranged on the rear end of critical senior middle school pressing cylinder 1, overcritical air cooling low pressure (LP) cylinder 2 is arranged on the rear end of No. second bearing housing 4, No. three bearing housing 5 is arranged on the rear end of overcritical air cooling low pressure (LP) cylinder 2, and number one bearing housing 3, overcritical senior middle school pressing cylinder 1, No. second bearing housing 4, the central lines of overcritical air cooling low pressure (LP) cylinder 2 and No. three bearing housing 5, front ram's horn on the overcritical senior middle school pressing cylinder 1 is connected with number one bearing housing 3, rear ram's horn on the overcritical senior middle school pressing cylinder 1 is connected with No. second bearing housing 4, number one bearing housing 3, No. second bearing housing 4, No. three bearing housing 5 and overcritical air cooling low pressure (LP) cylinder 2 land alone respectively setting, guarantee the impact that bearing dynamical height is not expanded by cylinder body, make bearing have good stability, the high pressure master vapour that each side is provided with of overcritical senior middle school pressing cylinder 1 is regulated union valve 6, each high pressure master vapour is regulated union valve 6 and is connected by the high-pressure admission mouth of highpressure steam conduit tube with overcritical senior middle school pressing cylinder 1, number one bearing housing 3 each side be provided with one hotter main vapour regulate union valve 7, each hotter main vapour regulate union valve 7 and be connected by compressing into steam ports in middle pressure steam guiding tube and the overcritical senior middle school pressing cylinder 1.
The overcritical air cooling extraction steam for factories of the 350MW grade steam turbine of present embodiment is overcritical, resuperheat, single shaft, twin-cylinder double flow, band extraction steam for factories condensed steam type Air-cooled Unit.
Embodiment two: in conjunction with Fig. 2 explanation, the right lateral side of the described overcritical senior middle school of present embodiment pressing cylinder 1 is equipped with rotary separator 8.Adopt rotary separator to realize the parameter of control extraction steam for factories.Undocumented technical characteristics is identical with embodiment one in the present embodiment.
Working principle: steam turbine is the rotary power machinery that the transformation of energy of steam is become the mechanical energy merit, claim again steam turbine, main prime mover as generating usefulness, also can directly drive various pumps, blower fan, compressor and propeller for vessels etc., can also utilize the steam discharge of steam turbine or middle bleeding to satisfy production and heat supply needs in life.

Claims (2)

1. the overcritical air cooling extraction steam for factories of 350MW grade steam turbine, it comprise overcritical senior middle school's pressing cylinder (1), overcritical air cooling low pressure (LP) cylinder (2), number one bearing housing (3), No. second bearing housing (4), No. three bearing housing (5), two high pressure master vapour regulate union valve (6) and two hotter main vapour regulate union valve (7), described overcritical senior middle school's pressing cylinder (1) is provided with front ram's horn and rear ram's horn; It is characterized in that: described number one bearing housing (3) is arranged on the front end of overcritical senior middle school's pressing cylinder (1), No. second bearing housing (4) is arranged on the rear end of critical senior middle school's pressing cylinder (1), overcritical air cooling low pressure (LP) cylinder (2) is arranged on the rear end of No. second bearing housing (4), No. three bearing housing (5) is arranged on the rear end of overcritical air cooling low pressure (LP) cylinder (2), and number one bearing housing (3), overcritical senior middle school's pressing cylinder (1), No. second bearing housing (4), the central lines of overcritical air cooling low pressure (LP) cylinder (2) and No. three bearing housing (5), front ram's horn on overcritical senior middle school's pressing cylinder (1) is connected with number one bearing housing (3), rear ram's horn on overcritical senior middle school's pressing cylinder (1) is connected with No. second bearing housing (4), number one bearing housing (3), No. second bearing housing (4), No. three bearing housing (5) and overcritical air cooling low pressure (LP) cylinder (2) land alone respectively setting, the high pressure master vapour that each side is provided with of overcritical senior middle school's pressing cylinder (1) is regulated union valve (6), each high pressure master vapour is regulated union valve (6) and is connected by the high-pressure admission mouth of highpressure steam conduit tube with overcritical senior middle school's pressing cylinder (1), number one bearing housing (3) each side be provided with one hotter main vapour regulate union valve (7), each hotter main vapour regulate union valve (7) and be connected by compressing into steam ports in middle pressure steam guiding tube and the overcritical senior middle school's pressing cylinder (1).
2. the overcritical air cooling extraction steam for factories of described 350MW grade steam turbine according to claim 1, it is characterized in that: the left rear side of described overcritical senior middle school's pressing cylinder (1) is equipped with rotary separator (8).
CN 201320276212 2013-05-20 2013-05-20 350MW-grade supercritical air-cooling industrial steam extraction steam turbine Expired - Lifetime CN203239404U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320276212 CN203239404U (en) 2013-05-20 2013-05-20 350MW-grade supercritical air-cooling industrial steam extraction steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320276212 CN203239404U (en) 2013-05-20 2013-05-20 350MW-grade supercritical air-cooling industrial steam extraction steam turbine

Publications (1)

Publication Number Publication Date
CN203239404U true CN203239404U (en) 2013-10-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306756A (en) * 2013-05-20 2013-09-18 哈尔滨汽轮机厂有限责任公司 350 MW grade supercritical air cooling industrial extraction turbine
CN106224015A (en) * 2016-08-31 2016-12-14 哈尔滨汽轮机厂有限责任公司 The 350MW supercritical triplex two clammy condensing turbine of steam discharge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306756A (en) * 2013-05-20 2013-09-18 哈尔滨汽轮机厂有限责任公司 350 MW grade supercritical air cooling industrial extraction turbine
CN106224015A (en) * 2016-08-31 2016-12-14 哈尔滨汽轮机厂有限责任公司 The 350MW supercritical triplex two clammy condensing turbine of steam discharge
CN106224015B (en) * 2016-08-31 2017-08-15 哈尔滨汽轮机厂有限责任公司 The overcritical clammy condensing turbines of the steam discharge of three cylinder two of 350MW

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Granted publication date: 20131016

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