KR200347233Y1 - Steam turbine by-pass automatic warming-up apparatus for thermoelectric power station - Google Patents

Steam turbine by-pass automatic warming-up apparatus for thermoelectric power station Download PDF

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KR200347233Y1
KR200347233Y1 KR2019980021968U KR19980021968U KR200347233Y1 KR 200347233 Y1 KR200347233 Y1 KR 200347233Y1 KR 2019980021968 U KR2019980021968 U KR 2019980021968U KR 19980021968 U KR19980021968 U KR 19980021968U KR 200347233 Y1 KR200347233 Y1 KR 200347233Y1
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steam
temperature
valve
thermostat
bypass
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KR2019980021968U
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KR20000009864U (en
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김규태
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현대중공업 주식회사
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    • 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
    • F01K23/06Plants 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 combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10Plants 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 combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

본 고안은 예열 증기 량의 조절을 위해 자동 온도 조절 장치를 추가하여 운전을 편리하게 하고 필요량 이외의 증기 소모(낭비)를 방지하여 경제적인 발전소 운전에 기여함을 목적으로 한다.The present invention aims to contribute to economical power plant operation by adding a thermostat to control the amount of preheated steam to make the operation convenient and to prevent the consumption of steam other than the required amount.

주증기 바이패스용 감압 감온 밸브(1) 후단에 연결 장착된 온도 검출기(4)로부터 주증기 바이패스용 감압 감온 밸브(1) 본체의 온도를 검출하여 자동 온도 조절 장치(5)에 전송하게 하는 것과, 상기 자동 온도 조절 장치(5)에서는 전송된 온도를 설정된 온도 상한 값과 하한 값과 비교하여 온도가 높을 경우 예열 증기 밸브(2)를 닫고, 낮을 경우는 예열 증기 밸브(2) 열도록 신호를 보내도록 구성하여 항상 적정량의 예열 증기가 바이패스용 감압, 감온 밸브(1) 후단에 공급될 수 있도록 구성되어진 화력발전소용 증기터빈 주증기 바이패스 밸브 자동예열장치이다.Detecting the temperature of the main steam bypass pressure reducing valve (1) main body from the temperature detector (4) attached to the rear end of the pressure reducing valve (1) for the main steam bypass to transmit to the thermostat (5) In addition, the thermostat 5 compares the transmitted temperature with a set upper and lower temperature limit to close the preheat steam valve 2 when the temperature is high, and open the preheat steam valve 2 when the temperature is low. It is an automatic preheating device for steam turbine main steam bypass valve for thermal power plant, which is configured to send a proper amount of preheated steam to the rear end of the bypass pressure reducing valve 1.

Description

화력발전소용 증기터빈 주증기 바이패스 밸브 자동예열장치{Steam turbine by-pass automatic warming-up apparatus for thermoelectric power station}Steam turbine by-pass automatic warming-up apparatus for thermoelectric power station

본 고안은 화력발전소용 증기터빈 주증기 바이패스 밸브 예열장치에 관한 것이다.The present invention relates to a steam turbine main steam bypass valve preheater for a thermal power plant.

화력 발전소에 적용되는 증기 터어빈은 발전소의 전력계통 및 증기 터빈 자체의 문제로 비상 정지되는 경우가 있으며, 이때 보일러의 운전을 지속시키기 위해서는 증기터빈으로 유입되는 고온, 고압의 주증기를 바이패스 밸브로 감압, 감온하여 복수기로 배출해야한다.Steam turbines applied to thermal power plants are sometimes stopped due to problems with the power system of the power plant and the steam turbine itself.In this case, the high temperature and high pressure main steam flowing into the steam turbine is used as a bypass valve to maintain the operation of the boiler. It should be discharged to a condenser by decompression and desuperheating

따라서 증기터빈 주증기 바이패스 밸브는 밸브의 전, 후단의 온도 및 압력 차가 매우 크며, 이로 인해 증기 터빈 정지시 상대적으로 금속 온도가 낮은 바이패스 밸브 후단으로 미처 감온되지 않은 고온의 증기가 유입되어 밸브가 파손될 가능성이 있으며 이를 방지하기 위한 주증기 바이패스 밸브 자동 예열장치에 관한 것이다.Therefore, the steam turbine main steam bypass valve has a very large temperature and pressure difference between the front and rear ends of the valve, which causes high temperature steam to flow into the rear end of the bypass valve where the metal temperature is relatively low when the steam turbine stops. Of the main steam bypass valve automatic preheating device to prevent it.

도 2는 종래의 화력발전소용 증기터빈 주증기 바이패스 밸브 예열장치의 시스템 구성 도이며, 예열 증기 밸브(10)는 바이패스 밸브 후단으로 공급되는 예열 증기 량을 조절하는 역할을 하는 것이다.2 is a system configuration diagram of a conventional steam turbine main steam bypass valve preheater for a thermal power plant, and the preheat steam valve 10 serves to adjust the amount of preheated steam supplied to the rear end of the bypass valve.

또한 멀티오리피스(12)는 밸브 전·후단의 큰 압력 차를 저감하여 예열 증기 밸브(10)의 조절을 쉽게하기 위한 장치이다.In addition, the multi-orifice 12 is a device for easy adjustment of the preheated steam valve 10 by reducing the large pressure difference between the front and rear of the valve.

상기와 같이 구성된 예열장치의 시스템은 주증기 바이패스 밸브 예열용 증기 조절밸브를 수동으로 조작하여 필요한 만큼 항상 예열 증기 량을 항상 공급토록 되어 있었다.The system of the preheater configured as described above was to supply the amount of preheated steam at all times as needed by manually operating the steam control valve for preheating the main steam bypass valve.

상기의 증기 터빈 주증기 바이패스 밸브 예열장치는 이상과 같이 구성되어 있어, 운전원이 예열 증기 량을 수동 조절해야 하므로 운전이 불편하고 증기 량 조절의 정밀도가 떨어지므로 필요 이상으로 증기 소모가 되는 등 문제점이 항상 발생하였다.The steam turbine main steam bypass valve preheating device is configured as described above, and the operator has to manually adjust the amount of preheated steam, which is inconvenient to operate and the precision of the amount of steam is lowered. This always happened.

본 고안은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로서, 예열 증기 량의 조절을 위해 자동 온도 조절 장치를 추가하여 운전을 편리하게 하고 필요량 이외의 증기 소모(낭비)를 방지하여 경제적인 발전소 운전에 기여함을 목적으로 한다.The present invention has been made to solve the above problems, by adding a thermostat for the control of the amount of preheated steam to facilitate the operation and to prevent the consumption of steam (waste) other than the required amount for economical power plant operation It is intended to contribute.

상기 목적을 달성하기 위해 주증기 바이패스용 감압 감온 밸브 후단에 연결장착된 온도 검출기로부터 주증기 바이패스용 감압 감온 밸브 본체의 온도를 검출하여 자동 온도 조절 장치에 전송하게 하는 것과, 상기 자동 온도 조절 장치에서는 전송된 온도를 설정된 온도 상한 값과 하한 값과 비교하여 온도가 높을 경우 예열 증기 밸브를 닫고, 낮을 경우는 예열 증기 밸브 열도록 신호를 보내도록 구성하여 항상 적정량의 예열 증기가 바이패스용 감압, 감온 밸브 후단에 공급될 수 있는 것을 제공함에 있다.Detecting the temperature of the main steam bypass pressure reducing valve body from a temperature detector connected to a rear end of the main steam bypass reducing pressure reducing valve to achieve the above object, and transmitting the temperature to the thermostat; The device is configured to compare the transmitted temperature to a set upper and lower temperature limit to signal the preheat steam valve to close when the temperature is high and to open the preheat steam valve when the temperature is low so that the appropriate amount of preheat steam is always In another aspect, the present invention provides a supply that can be supplied to a rear end of a temperature reducing valve.

도 1은 본 고안 화력발전소용 증기터빈 주증기 바이패스밸브 자동 예열 장치의 시스템 구성도1 is a system configuration diagram of the steam turbine main steam bypass valve automatic preheating device for the thermal power plant of the present invention

도 2는 종래 화력발전소용 증기터빈 주증기 바이패스 밸브 예열장치의 시스템 구성도2 is a system configuration diagram of a steam turbine main steam bypass valve preheater for a conventional thermal power plant

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

(1) : 주증기 바이패스용 감압, 감온 밸브(1): Pressure reducing valve for main steam bypass

(2) : 예열증기 밸브(2): preheated steam valve

(3) : 유량 조정용 멀티오리피스(3): multi-orifice for flow adjustment

(4) : 온도 검출기(4): temperature detector

(5) : 자동 온도 조절장치(5): Thermostat

첨부된 도면에 의거하여 본 고안의 구성 및 작용을 상세히 설명하면 다음과 같다.Referring to the configuration and operation of the present invention in detail based on the accompanying drawings as follows.

도 1은 본 고안 화력발전소용 증기터빈 주증기 바이패스밸브 자동 예열 장치의 시스템 구성 도를 도시한 것이다.1 is a system configuration diagram of the steam turbine main steam bypass valve automatic preheating device for the thermal power plant of the present invention.

주증기 바이패스용 감압 감온 밸브(1) 후단에 연결 장착된 온도 검출기(4)로부터 주증기 바이패스용 감압 감온 밸브(1) 본체의 온도를 검출하여 자동 온도 조절 장치(5)에 전송하게 하는 것과, 상기 자동 온도 조절 장치(5)에서는 전송된 온도를 설정된 온도 상한 값과 하한 값과 비교하여 온도가 높을 경우 예열 증기 밸브(2)를 닫고, 낮을 경우는 예열 증기 밸브(2) 열도록 신호를 보내도록 구성하여 항상 적정량의 예열 증기가 바이패스용 감압, 감온 밸브(1) 후단에 공급될 수 있도록 구성되어진 것이다.Detecting the temperature of the main steam bypass pressure reducing valve (1) main body from the temperature detector (4) attached to the rear end of the pressure reducing valve (1) for the main steam bypass to transmit to the thermostat (5) In addition, the thermostat 5 compares the transmitted temperature with a set upper and lower temperature limit to close the preheat steam valve 2 when the temperature is high, and open the preheat steam valve 2 when the temperature is low. It is configured to send a proper amount of preheated steam is always configured to be supplied to the rear end of the decompression, temperature reduction valve (1) for bypass.

본 고안의 작용은 다음과 같다.The operation of the present invention is as follows.

증기터빈 정상 운전 중에는 고온(500~600℃), 고압(100~150Kg/CM2G)의 주증기가 주증기 바이패스용 감압, 감온 밸브(1)의 전단까지 도달하는 것이며, 이때 온도 검출기는 바이패스 감온, 감압 밸브(1) 후단 금속 온도를 검출하여 자동 온도 조절 장치(5)로 전송하는 것이다.During normal operation of the steam turbine, the main steam at high temperature (500 ~ 600 ℃) and high pressure (100 ~ 150Kg / CM2G) reaches the decompression for the main steam bypass and the front end of the temperature reduction valve (1). The temperature reduction and temperature reduction of the rear end metal 1 are detected and transmitted to the thermostat 5.

상기 자동 온도 조절 장치(5)에서는 설정된 온도 상한 및 하한 값과 비교하여 온도가 높은 경우에는 예열 증기 밸브(2)를 닫고, 낮을 경우에는 예열 증기 밸브(2)를 열도록 전기 신호를 보내 예열 증기 공급량을 설정 온도 범위 내에서 유지하도록 하는 것이다.When the temperature is high, the thermostat 5 closes the preheat steam valve 2 when the temperature is high, and when it is low, sends an electric signal to open the preheat steam valve 2 when the temperature is high. To keep the supply within the set temperature range.

상기의 온도 검출기(4)는 열전대식을 사용하는 것이며, 예열 증기 밸브(2)는 전자기식 솔레노이드 밸브를 사용하는 것이며, 자동 온도 조절 장치(5)는 리미트 스위치 식을 사용하는 것이다.The temperature detector 4 uses a thermocouple type, the preheated steam valve 2 uses an electromagnetic solenoid valve, and the thermostat 5 uses a limit switch type.

미설명 부호(3)는 유량 조정용 멀티오리피스이다.Reference numeral 3 is a multi-orifice for adjusting the flow rate.

그러므로 본 고안은 증기 터빈 주증기 바이패스 밸브 예열 증기 량 조절을위해 온도 검출기, 자동 개폐밸브 밸브 및 자동 온도 조절기 등을 사용한 자동 온도 조절 기능을 추가하여 운전자 편리는 물론 예열 증기 과잉 공급에 따른 증기 손실을 방지하여 경제적인 발전소 운전이 용이할 수 있도록 하는 아주 유용한 고안인 것이다.Therefore, the present invention adds an automatic temperature control function using a temperature detector, an automatic shut-off valve valve and an automatic thermostat for controlling the steam turbine main steam bypass valve preheating steam volume, and the loss of steam due to overheating of steam as well as operator convenience. It is a very useful design that makes it easy to operate the economical power plant by preventing the damage.

Claims (1)

주증기 바이패스용 감압 감온 밸브(1) 후단에 연결 장착된 온도 검출기(4)로부터 주증기 바이패스용 감압 감온 밸브(1) 본체의 온도를 검출하여 자동 온도 조절 장치(5)에 전송하게 하는 것과, 상기 자동 온도 조절 장치(5)에서는 전송된 온도를 설정된 온도 상한 값과 하한 값과 비교하여 온도가 높을 경우 예열 증기 밸브(2)를 닫고, 낮을 경우는 예열 증기 밸브(2) 열도록 신호를 보내도록 구성한 것을 특징으로 하는 화력발전소용 증기터빈 주증기 바이패스 밸브 자동예열장치.Detecting the temperature of the main steam bypass pressure reducing valve (1) main body from the temperature detector (4) attached to the rear end of the pressure reducing valve (1) for the main steam bypass to transmit to the thermostat (5) In addition, the thermostat 5 compares the transmitted temperature with a set upper and lower temperature limit to close the preheat steam valve 2 when the temperature is high, and open the preheat steam valve 2 when the temperature is low. Steam turbine main steam bypass valve automatic preheating device for thermal power plant, characterized in that configured to send.
KR2019980021968U 1998-11-13 1998-11-13 Steam turbine by-pass automatic warming-up apparatus for thermoelectric power station KR200347233Y1 (en)

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