KR100446991B1 - The Back-Pressure Control Equipment of Steam Turbine in the Combined Heat Power Plant of District heating - Google Patents

The Back-Pressure Control Equipment of Steam Turbine in the Combined Heat Power Plant of District heating Download PDF

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Publication number
KR100446991B1
KR100446991B1 KR10-1999-0017377A KR19990017377A KR100446991B1 KR 100446991 B1 KR100446991 B1 KR 100446991B1 KR 19990017377 A KR19990017377 A KR 19990017377A KR 100446991 B1 KR100446991 B1 KR 100446991B1
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South Korea
Prior art keywords
temperature
steam turbine
district heating
power plant
hot water
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KR10-1999-0017377A
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Korean (ko)
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KR20000073827A (en
Inventor
김규태
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현대중공업 주식회사
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Priority to KR10-1999-0017377A priority Critical patent/KR100446991B1/en
Publication of KR20000073827A publication Critical patent/KR20000073827A/en
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Publication of KR100446991B1 publication Critical patent/KR100446991B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/02—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/02—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
    • F03G1/022—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil using spiral springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/06—Other parts or details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle

Abstract

본 발명은 지역난방 복합화력발전소용 증기터빈 배압조절장치에 관한 것으로, 지역난방 복합화력발전소에 사용되는 증기터빈은 지역난방 열수요에 따라 배압이 변동되고 따라서 중온수 온도가 과도하게 상승할 수 있으며 이때 적정 배압 및 중온수 공급온도를 유지하기 위해서는 증기터빈 배기열의 일부를 외부로 배출하여 지역난방 열교환기 내부 압력을 일정하게 유지해야 한다. 따라서 증기터빈 배압조절장치는 안정적인 열공급 및 발전소 운전을 위해 필수적인 장치이다.The present invention relates to a steam turbine back pressure regulating device for a district heating combined cycle power plant, the steam turbine used in a district heating combined cycle power plant fluctuates back pressure according to the district heating heat demand, so that the temperature of the hot water is excessively increased. At this time, in order to maintain the proper back pressure and the temperature of the hot water supply, the internal pressure of the district heating heat exchanger should be kept constant by discharging a part of the exhaust heat of the steam turbine to the outside. Therefore, steam turbine back pressure regulator is essential for stable heat supply and power plant operation.

본 발명의 지역난방 복합화력발전소용 증기터빈 배압조절장치는 중온수 공급배관으로부터 온도를 감지하는 중온수 온도조절기와, 고압, 저압 일체형 증기터빈과 지역난방 열교환기 사이에 설치되어 중온수 온도조절기에서 감지한 온도에 따라 배기열을 분기시키는 분기관과, 상기 분기관에 연결되어 유입된 배기열을 응축시키는 공기냉각복수기와, 상기 중온수 온도조절기에서 보낸 신호에 의해 설정된 온도에 따라 속도 및 구동댓수가 조정되어 공기냉각복수기를 냉각시키는 다수 개의 공기냉각복수기 팬으로 구성되어 간편하면서 안정적인 중온수 공급온도 조절능력을 제공할 수 있다.Steam turbine back pressure control device for a district heating combined cycle power plant of the present invention is installed between a medium temperature water temperature controller for detecting the temperature from the medium temperature water supply pipe, a high pressure, low pressure integrated steam turbine and district heating heat exchanger in the medium temperature water temperature controller A branch pipe branching the exhaust heat according to the sensed temperature, an air cooling condenser connected to the branch pipe to condense the introduced exhaust heat, and the speed and the driving number are adjusted according to the temperature set by the signal sent from the temperature controller. It is composed of a plurality of air cooling condenser fan to cool the air cooling condenser can provide a simple and stable temperature control of the hot water supply temperature.

Description

지역난방 복합화력발전소용 증기터빈 배압 조절장치{The Back-Pressure Control Equipment of Steam Turbine in the Combined Heat Power Plant of District heating}The Back-Pressure Control Equipment of Steam Turbine in the Combined Heat Power Plant of District heating}

본 발명은 지역난방 복합화력발전소용 증기터빈 배압조절장치에 관한 것으로, 지역난방 복합화력발전소에 사용되는 증기터빈은 지역난방 열수요에 따라 배압이 변동되고 따라서 중온수 온도가 과도하게 상승할 수 있으며 이때 적정 배압 및 중온수 공급온도를 유지하기 위해서는 증기터빈 배기열의 일부를 외부로 배출하여 지역난방 열교환기 내부 압력을 일정하게 유지해야 한다. 따라서 증기터빈 배압조절장치는 안정적인 열공급 및 발전소 운전을 위해 필수적인 장치이다.The present invention relates to a steam turbine back pressure regulating device for a district heating combined cycle power plant, the steam turbine used in a district heating combined cycle power plant fluctuates back pressure according to the district heating heat demand, so that the temperature of the hot water is excessively increased. At this time, in order to maintain the proper back pressure and the temperature of the hot water supply, the internal pressure of the district heating heat exchanger should be kept constant by discharging a part of the exhaust heat of the steam turbine to the outside. Therefore, steam turbine back pressure regulator is essential for stable heat supply and power plant operation.

가스터빈에서 연소배기열을 공급받아 배열회수보일러에서 증기를 제조하고, 상기 제조된 고온, 고압의 증기는 증기터빈을 지나면서 전기를 생산하고 감압, 감온 팽창된 배기증기는 지역난방 열교환기에 열을 공급하고, 지역난방 열교환기와 연결된 중온수 공급배관을 통해 열수요처마다 중온수를 공급하는 지역난방 복합화력발전소용 증기터빈 배압조절장치에 있어서 도 2 는 종래의 지역난방 복합화력발전소용 증기터빈 배압조절장치의 시스템 구성도로서, 안정적인 중온수 온도조절을 위해 증기터빈 배압 상승시, 증기터빈(3)에서 나오는 배관(9)에서 온도를 감지한 온도조절기(27)에 의해 작동되는 저압증기 조절밸브(25)는 증기터빈(3)에서 저압증기를 배출하여 증기터빈(3)의 배압을 조절하고, 저압증기터빈 클러치(25)에서는 증기터빈과 저압증기터빈(21)을 절환 및 연결하며, 저압증기터빈(21)을 지난 저압증기는 냉각수를 공급하는 냉각탑(24)과 연결된 복수기(22)에서 응축된 후 응축수 펌프(5)에 의해 배열회수보일러(2)로 순환되는 구성을 보여준다.The combustion exhaust heat is supplied from the gas turbine to produce steam in the heat recovery boiler, and the produced high temperature and high pressure steam passes through the steam turbine to produce electricity, and the reduced pressure and reduced temperature expanded exhaust steam supplies heat to the district heating heat exchanger. In the steam turbine back pressure regulating device for a district heating combined cycle power plant for supplying the hot water for each hot water demand through the hot water supply pipe connected to the district heating heat exchanger, Figure 2 is a conventional steam turbine back pressure regulator for a district heating combined cycle power plant As a system configuration of the low pressure steam control valve actuated by the temperature controller 27 sensed the temperature in the pipe (9) coming from the steam turbine (3) when the steam turbine back pressure rise for stable temperature control of hot water temperature (25) ) Controls the back pressure of the steam turbine (3) by discharging the low pressure steam from the steam turbine (3), the steam turbine and low pressure steam turbine in the low pressure steam turbine clutch (25) The low pressure steam passing through the low pressure steam turbine 21 is condensed in the condenser 22 connected to the cooling tower 24 for supplying the cooling water, and then the heat recovery boiler 2 is connected by the condensate pump 5. Shows the configuration circulating in

종래에는 증기터빈(3) 배압조절을 위해서 증기터빈(3)에 클러치(26)를 설치하여 증기를 고압 및 저압으로 분리하였으며, 복수기(22)의 냉각을 위한 냉각탑(24)을 설치해야 했다.Conventionally, the clutch 26 was installed on the steam turbine 3 to control the back pressure of the steam turbine 3, and the steam was separated at high pressure and low pressure, and a cooling tower 24 for cooling the condenser 22 had to be installed.

이상과 같이 구성된 종래의 증기터빈 배압조절장치(20)는 증기터빈클러치(26)의 조작 및 저압증기터빈(21) 가동시간 등 운전에 제약이 많으며, 냉각탑(24) 가동에 따른 용수 소모량이 많고 백연(WHITE PLUME)발생으로 주변 민원을 야기시키는 등의 문제점이 있었다.The conventional steam turbine back pressure regulating device 20 configured as described above has many restrictions in operation such as operation of the steam turbine clutch 26 and operating time of the low pressure steam turbine 21, and water consumption is large due to the operation of the cooling tower 24. White plume (WHITE PLUME) caused a problem such as causing a complaint around.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로서, 그 목적은 증기터빈을 고압 저압으로 분리하지 않고 일체형으로 하여, 운전이 편리하고 냉각탑이 필요 없어 용수 소요량이 적고 항상 안정적인 중온수 온도 및 배압조절능력을 갖는 지역난방 복합화력발전소용 증기터빈 배압조절장치를 제공함에 있다.The present invention has been made in order to solve the above problems, the purpose is to integrate the steam turbine into a high pressure low pressure without being integrated, convenient operation and does not require a cooling tower, water consumption is small and always stable stable hot water temperature and back pressure The present invention provides a steam turbine back pressure regulating device for a district heating combined cycle power plant.

도 1 은 본 발명의 지역난방 복합화력발전소용 증기터빈 배압 조절장치 시스템 구성도1 is a schematic diagram of a steam turbine back pressure control system for a district heating combined cycle power plant according to the present invention

도 2 는 종래의 지역난방 복합화력발전소용 증기터빈 배압 조절장치 시스템 구성도Figure 2 is a schematic diagram of a steam turbine back pressure control system for a conventional district heating combined cycle power plant

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

(1) 가스터빈(1) gas turbine

(2) 배열회수 보일러(2) heat recovery boiler

(3) 증기터빈(3) steam turbine

(4) 지역난방 열교환기(4) district heating heat exchanger

(5) 응축수 펌프(5) condensate pump

(6) 열공급 펌프(6) heat supply pump

(7) 발전기(7) generator

(8) 중온수 공급배관(8) Medium temperature hot water supply piping

(9) 증기터빈에서 나오는 관(9) pipes from steam turbines

(10) 증기터빈 배압조절장치(10) Steam turbine back pressure regulator

(11) 공기냉각복수기(11) air cooling condenser

(12) 공기냉각복수기 팬(12) Air Cooling Multiple Fan

(13) 중온수 온도조절기(13) Medium temperature water temperature controller

(14) 분기관(14) branch pipe

(20) 종래의 증기터빈 배압조절장치(20) Conventional Steam Turbine Back Pressure Regulator

(21) 저압증기터빈(21) Low pressure steam turbine

(22) 복수기(22) Avengers

(23) 냉각수 순환펌프(23) Cooling water circulation pump

(24) 냉각탑(24) cooling tower

(25) 저압증기 조절밸브(25) Low Pressure Steam Control Valve

(26) 저압증기터빈 클러치(26) Low Pressure Steam Turbine Clutch

(27) 온도조절기(27) Thermostat

본 발명은 지역난방 복합화력발전소용 증기터빈 배압조절장치에 관한 것으로, 본 발명의 증기터빈 배압조절장치(10)는 증기터빈(2)을 운전이 간단한 일체형으로 하고, 증기터빈(3) 배기측에 분기관(14)을 설치하여 배기증기 일부를 복수하도록 하며, 냉각탑(24)이 필요없고 백연(WHITE PLUME) 발생 문제가 없는 공기냉각복수기(11)를 갖도록 구성한다.The present invention relates to a steam turbine back pressure regulating device for a district heating combined cycle power plant, the steam turbine back pressure regulating device 10 of the present invention is a steam turbine (2) of the integrated operation simple, the steam turbine (3) exhaust side The branch pipe 14 is installed in a plurality of exhaust steam, and the cooling tower 24 is not required and the air cooling condenser 11 is free from the problem of white plume.

본 발명은 지역난방 열수요에 따라 변동되는 중온수 온도를 중온수 공급배관(8)으로부터 감지하는 중온수 온도조절기(13)와, 고압, 저압 일체형 증기터빈(3)과 지역난방 열교환기(4) 사이에 설치되어 중온수 온도조절기(13)에서 감지한 온도에 따라 배기열을 분기시키는 분기관(14)과, 상기 분기관(14)에 연결되어유입된 배기열을 응축시키는 공기냉각복수기(11)와, 상기 중온수 온도조절기(13)에서 보낸 신호에 의해 설정된 온도에 따라 속도 및 구동댓수가 조정되어 공기냉각복수기(11)를 냉각시키는 다수 개의 공기냉각복수기 팬(12)으로 구성되어 간편하면서도 안정적인 중온수 공급온도 조절능력을 제공하는 것을 특징으로 하는 개선된 지역난방 복합화력발전소용 증기터빈 배압조절장치이다.The present invention is a hot and cold water temperature controller (13) for detecting the hot and cold water temperature fluctuating according to the district heating heat demand from the heavy hot water supply pipe (8), high pressure, low pressure integrated steam turbine (3) and district heating heat exchanger (4) A branch pipe 14 installed between the branch pipes 14 for branching the exhaust heat according to the temperature detected by the middle temperature water temperature controller 13 and an air cooling condenser 11 connected to the branch pipes 14 to condense the introduced exhaust heat. And a plurality of air cooling condenser fans 12 for cooling the air cooling condenser 11 by adjusting the speed and the number of driving according to the temperature set by the signal sent from the medium temperature water temperature controller 13. An improved steam turbine back pressure regulating device for a district heating combined cycle power plant, characterized by providing the ability to regulate the temperature of the supply of hot water.

<실시예><Example>

이하, 첨부된 도면을 참조하여 본 발명의 구성 및 작용을 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings.

도 1 은 본 발명의 지역난방 복합화력발전소용 증기터빈 배압조절장치 시스템 구성도로서, 증기터빈(3) 배기증기로 지역난방 열공급 운전 중 지역난방 열부하가 떨어질 경우, 중온수 온도조절기(13)에서 중온수 온도가 설정값보다 올라가는 것을 감지하여 공기냉각복수기 팬(12)의 속도 또는 댓수를 조절(비례제어)하여 공기냉각복수기(11)의 열교환량 및 복수량을 증가시키고, 공기냉각복수기(11)쪽으로 유입되는 증기터빈(3)의 배기증기량이 증가되어 배압이 조절되며 지역난방열교환기(4)로 공급되는 열량을 감소시킴으로 중온수 공급온도가 설정치를 유지케 하는 개선된 지역난방 복합화력발전소용 증기터빈 배압 조절장치이다.1 is a schematic diagram of a system for controlling a steam turbine back pressure for a district heating combined cycle power plant according to the present invention. In the case of a district heating heat load during a district heating heat supply operation with an exhaust steam of a steam turbine (3), in a hot water temperature controller (13) Sensing that the hot water temperature rises above the set value, the speed or number of the air cooling condenser fans 12 is adjusted (proportionally controlled) to increase the heat exchange amount and the plurality of heat exchangers of the air cooling condenser 11, For improved district heating combined cycle power plant, where the amount of exhaust steam of the steam turbine (3) flowing to the side is increased to control the back pressure and reduce the amount of heat supplied to the district heating heat exchanger (4), so that the hot water supply temperature is maintained at the set value. Steam turbine back pressure regulator.

상기의 공기냉각복수기(11)는 핀/튜브형식을 사용하고, 공기냉각복수기 팬(12)은 속도조절장치, 날개각도조절기 및 댓수 제어방식 등으로 풍량을 조절할 수 있다.The air cooling condenser 11 uses a fin / tube type, and the air cooling condenser fan 12 may adjust the air volume by a speed controller, a wing angle controller, and a number control method.

이상과 같이 본 발명에 의하면, 증기터빈(3) 배압 조절을 위해 공기냉각복수기(11)를 지역난방 열교환기(4)와 병렬운전함으로 증기터빈(3)을 고압 및 저압으로 분리하지 않고 일체형으로 설치하여 운전이 편리하고, 용수 소요량이 많고 주변 민원발생의 문제가 있는 냉각탑(24)을 설치하지 않고도 항상 안정적인 중온수 온도 및 배압조절이 가능하게 되어 안정적인 열공급 및 환경 친화적인 발전소 운전을 가능하게 한다As described above, according to the present invention, by operating the air cooling condenser 11 in parallel with the district heating heat exchanger (4) to control the steam turbine (3) back pressure, the steam turbine (3) is integrally formed without separating the high pressure and low pressure. It is convenient to install and operate, and it is possible to control stable temperature and hot water temperature and back pressure all the time without installing cooling tower 24, which has a lot of water requirements and problems of surrounding complaints, and enables stable heat supply and environmentally friendly power plant operation.

Claims (1)

가스터빈에서 연소배기열을 공급받아 배열회수보일러에서 증기를 제조하고, 상기 제조된 고온, 고압의 증기는 증기터빈을 지나면서 전기를 생산하고 감압, 감온 팽창된 배기증기는 지역난방 열교환기에 열을 공급하고, 지역난방 열교환기와 연결된 중온수 공급배관을 통해 열수요처마다 중온수를 공급하는 지역난방 복합화력발전소용 증기터빈 배압조절장치에 있어서,The combustion exhaust heat is supplied from the gas turbine to produce steam in the heat recovery boiler, and the produced high temperature and high pressure steam passes through the steam turbine to produce electricity, and the reduced pressure and reduced temperature expanded exhaust steam supplies heat to the district heating heat exchanger. In the steam turbine back pressure control device for a district heating combined cycle power plant for supplying heavy hot water for each hot water demand through the hot water supply pipe connected to the district heating heat exchanger, 상기 중온수 공급배관(8)으로부터 온도를 감지하는 중온수 온도조절기(13)와,A middle temperature water temperature controller (13) for detecting a temperature from the middle temperature water supply pipe (8), 고압, 저압 일체형 증기터빈(3)과 지역난방 열교환기(4) 사이에 설치되어 중온수 온도조절기(13)에서 감지한 온도에 따라 배기열을 분기시키는 분기관(14)과,A branch pipe (14) installed between the high pressure and low pressure integrated steam turbine (3) and the district heating heat exchanger (4) for branching exhaust heat according to the temperature sensed by the hot water temperature controller (13); 상기 분기관(14)에 연결되어 유입된 배기열을 응축시키는 공기냉각복수기(11)와,An air cooling condenser 11 connected to the branch pipe 14 to condense the introduced exhaust heat; 상기 중온수 온도조절기(13)에서 보낸 신호에 의해 설정된 온도에 따라 속도 및 구동댓수가 조정되어 공기냉각복수기(11)를 냉각시키는 다수 개의 공기냉각복수기 팬(12)으로 구성되어 안정적인 중온수 공급온도 조절능력을 제공하는 것을 특징으로 하는 개선된 지역난방 복합화력발전소용 증기터빈 배압조절장치.Speed and driving number is adjusted according to the temperature set by the signal sent from the medium temperature water temperature controller 13 is composed of a plurality of air cooling water condenser fan 12 for cooling the air cooling condenser 11, stable temperature of the hot water supply An improved steam turbine back pressure regulating device for an district heating combined cycle power plant, characterized by providing control capacity.
KR10-1999-0017377A 1999-05-14 1999-05-14 The Back-Pressure Control Equipment of Steam Turbine in the Combined Heat Power Plant of District heating KR100446991B1 (en)

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Publication number Priority date Publication date Assignee Title
JPS56136105U (en) * 1980-03-14 1981-10-15
JPS58191304U (en) * 1982-06-17 1983-12-19 株式会社東芝 Turbine bypass control device
JPH05222904A (en) * 1991-12-17 1993-08-31 Toshiba Corp Control device for turbine exhaust condensing system
JPH074603A (en) * 1993-06-16 1995-01-10 Kawasaki Heavy Ind Ltd Refuse incinerating power-plant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56136105U (en) * 1980-03-14 1981-10-15
JPS58191304U (en) * 1982-06-17 1983-12-19 株式会社東芝 Turbine bypass control device
JPH05222904A (en) * 1991-12-17 1993-08-31 Toshiba Corp Control device for turbine exhaust condensing system
JPH074603A (en) * 1993-06-16 1995-01-10 Kawasaki Heavy Ind Ltd Refuse incinerating power-plant

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