CN106640239B - A kind of reducing-and-cooling plant - Google Patents

A kind of reducing-and-cooling plant Download PDF

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Publication number
CN106640239B
CN106640239B CN201611177271.XA CN201611177271A CN106640239B CN 106640239 B CN106640239 B CN 106640239B CN 201611177271 A CN201611177271 A CN 201611177271A CN 106640239 B CN106640239 B CN 106640239B
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China
Prior art keywords
pressure
steam
temperature
matcher
motor
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CN201611177271.XA
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Chinese (zh)
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CN106640239A (en
Inventor
郭颖
程祖田
苏文杰
孟胜利
车聪斌
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PowerChina Henan Electric Power Survey and Design Institute Co Ltd
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Hennan Electric Power Survey and Design Institute
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

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

Abstract

The present invention relates to super（It is super）Field is transformed in criticality benchmark heat supply, more particularly to a kind of reducing-and-cooling plant includes condensing turbine, backwater heater, pressure matcher, 3 grades of the intermediate pressure cylinder of the condensing turbine draws gas or high steam is delivered to backwater heater by bleed steam pipework, the steam discharge of backwater heater and draw gas the mesolow cylinder communicating pipe of condensing turbine pressure matcher is delivered to by bleed steam pipework, the steam discharge of pressure matcher is used for outward supplying heat, and the outlet of the externally arranged steam cooler is connected to pressure matcher by valve pipe.The beneficial effects of the invention are as follows：Three can effectively be reduced and take out steam consumption, improve energy cascade utilization efficiency.Improve unit economy；Realize automatic pressure and temperature reducing and supply industrial thermic load；Temperature, pressure and warning message can be passed to Surveillance center by temperature detector, alarm, realized remote monitoring, improved production efficiency, ensure the security of equipment operation.

Description

A kind of reducing-and-cooling plant
Technical field
The present invention relates to super（It is super）Field, more particularly to a kind of reducing-and-cooling plant are transformed in criticality benchmark heat supply.
Background technology
To meet industrial thermal load demands and environmental requirement, unit heat supply transformation is increasing, influences the safety warp of unit Ji property.
At present in practical engineering application, existing heat supply remodeling method has following a few classes：First, from meeting heating demand Pipeline punching is drawn gas by heat supply after temperature-decreased pressure reducer；2nd, punching is taken out from reheating cold segment pipe and on mesolow communicating pipe respectively Vapour, and pressure matcher is used, it will be drawn gas on cold section of injection communicating pipe of drawing gas of reheating, both confess after mixing meets heat supply mesh Mark.
External superheated steam cooler is a kind of reasonable heat exchange using draw gas degree of superheat heating main condensate or feedwater Device, it improves the exit water temperature of this grade of heater, has squeezed high pressure extraction, overcome heater design in upper end difference to The influence of water outlet temperature, backheat degree improve, therefore economy is improved, widely applied in recent years in power plant of China. External superheated steam cooler makes full use of steam superheat, reduces irreversible heat exchange loss, improves feedwater to a certain extent Temperature.
Pressure matcher is to apply ejector principle, with high steam by high speed nozzle injection lower pressure steam, is passed through Diffusion is mixed, supply reaches the steam of requirement pressure.Pressure matcher is can to meet that different steam pressure users require efficient Energy-saving equipment, at present in cogeneration power plant using more.
The temperature-decreased pressure reducer of heating system, the arrangement of pressure matcher for unit operation economy using having larger shadow Ring, prior art energy cascade utilization efficiency is low, and generatine set heat efficiency is low.
The content of the invention
In order to solve the problems, such as that prior art is present, the present invention provides a kind of reducing-and-cooling plant.
The technical scheme is that：A kind of reducing-and-cooling plant includes condensing turbine, backwater heater, pressure Orchestration, 3 grades of the intermediate pressure cylinder of the condensing turbine draws gas or high steam is delivered to backwater heater by bleed steam pipework, returns The steam discharge of water heater and draw gas the mesolow cylinder communicating pipe of condensing turbine pressure matcher be delivered to by bleed steam pipework, The steam discharge of pressure matcher is used for outward supplying heat, and the outlet of the externally arranged steam cooler is connected to pressure by valve pipe Adaptation.
A kind of reducing-and-cooling plant also includes PLC control cabinet, four motor-driven valves, three pressure and temp detectors, three reports Alert device and Surveillance center；Wherein, motor-driven valve I, and pressure and temp detector are provided with the admission line of the backwater heater I, pressure and temp detector I is used for the temperature and pressure for detecting the high steam entered in backwater heater.
Wherein, the steam discharge of the pressure matcher passes through pressure matcher outlet vapor pipeline outward supplying heat；Described pressure Motor-driven valve II, and pressure and temp detector II, described pressure and temp detector are provided with power adaptation outlet vapor pipeline II is used for temperature and pressure of the detection for the middle pressure steam of industrial thermic load.
Wherein, low-pressure steam is delivered to pressure by described condensing turbine by mesolow communicating pipe bleed steam pipework Orchestration；Motor-driven valve III, and pressure and temp detector III, the pressure and temp detection are provided with mesolow communicating pipe bleed steam pipework Device III is used for the temperature and pressure for detecting the low-pressure steam entered in backwater heater.
Motor-driven valve IV is installed between the backwater heater and pressure matcher.
A kind of reducing-and-cooling plant includes PLC control cabinet and Surveillance center, the motor-driven valve I, pressure and temp detector I, Motor-driven valve II, pressure and temp detector II, motor-driven valve III, pressure and temp detector III and motor-driven valve IV respectively with PLC control cabinet Connection, PLC control cabinet control the action of corresponding motor-driven valve according to temperature and pressure everywhere；The pressure and temp detector Ith, pressure and temp detector II and pressure and temp detector III include respectively pressure sensor, temperature sensor, signal processor, Single-chip microcomputer and wireless launcher, the pressure sensor, temperature sensor are connected with signal processor respectively, at the signal The data signal that will convert into of reason device is delivered to single-chip microcomputer, the single-chip microcomputer control wireless launcher by the temperature detected and For pressure signal by being transmitted wirelessly to Surveillance center, the Surveillance center is provided with radio receiver.
Admission line, pressure matcher outlet vapor pipeline and mesolow of the reducing-and-cooling plant also in high steam Alarm is respectively arranged with communicating pipe bleed steam pipework, alarm I, the pressure are provided with the admission line of the high steam Alarm II is provided with power adaptation outlet vapor pipeline, alarm is provided with the mesolow communicating pipe bleed steam pipework Ⅲ；Three alarms are connected with corresponding single-chip microcomputer respectively, and warning message is passed through wireless launcher by the single-chip microcomputer Pass to Surveillance center.
The backwater heater uses externally arranged steam cooler.
The pressure matcher is also associated with pressure digital display instrument.
Externally arranged steam cooler outlet vapor pipeline is installed between the backwater heater and pressure matcher.
Bleed steam pipework is provided between the intermediate pressure cylinder and backwater heater of the condensing turbine.
Mesolow communicating pipe bleed steam pipework is connected between the condensing turbine and pressure matcher.
Described 3 grades draw gas or the pressure limit of high steam is in 3.0 ~ 26.0Mpa, and temperature range is at 300 ~ 580 DEG C.
The pressure that described communicating pipe draws gas is 0.5 ~ 1.6Mpa, and temperature is 160 ~ 300 DEG C.
Described steam discharge is middle pressure steam, and pressure is 1.3 ~ 4.0Mpa, and temperature is 230 ~ 400 DEG C.
The beneficial effects of the invention are as follows：The present invention is that externally arranged steam cooler substitutes conventional desuperheat using backwater heater Device；Temperature-decreased pressure reducer is substituted using pressure matcher, three can be effectively reduced and take out steam consumption, improve energy cascade utilization efficiency. It is assumed that feed temperature is certain, the present invention can squeeze it is advanced draw gas, improve generatine set heat efficiency, improve unit economy；There is provided pressure Power temperature detector, alarm and PLC control cabinet, realize automatic pressure and temperature reducing and supply industrial thermic load；Temperature detector, alarm Temperature, pressure and warning message can be passed to Surveillance center by device, realized remote monitoring, improved production efficiency, be ensured The security of equipment operation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the control system schematic diagram of the present invention；
Wherein, 1- condensing turbines；101- bleed steam pipeworks；102- mesolow communicating pipe bleed steam pipeworks；103- externals Steam condenser outlet vapor pipeline, 104- pressure matcher outlet vapor pipelines,；2- externally arranged steam coolers；3- pressure Adaptation.
Embodiment
As shown in Figures 1 and 2, a kind of reducing-and-cooling plant of the invention, including condensing turbine 1, external Steam condenser 2, pressure matcher 3,3 grades of the intermediate pressure cylinder of condensing turbine draws gas or high steam passes through bleed steam pipework 101 It is delivered to externally arranged steam cooler, the steam discharge of externally arranged steam cooler passes through low in pipeline 103 and condensing turbine Draw gas cylinder pressure communicating pipe and pressure matcher is delivered to by bleed steam pipework 102, pressure matcher steam discharge is exported by pipeline 104 and supplied Heat.
A kind of reducing-and-cooling plant includes PLC control cabinet, four motor-driven valves, three pressure and temp detectors, three alarms Device and Surveillance center；Wherein, motor-driven valve I, and pressure and temp detector I are provided with the admission line of the backwater heater 2, Pressure and temp detector I is used for the temperature and pressure for detecting the high steam entered in backwater heater；Wherein, the pressure The steam discharge of adaptation passes through pressure matcher outlet vapor pipeline outward supplying heat；On described pressure matcher outlet vapor pipeline Motor-driven valve II, and pressure and temp detector II are provided with, described pressure and temp detector II, which is used to detect, supplies industrial thermic load Middle pressure steam temperature and pressure.Wherein, described condensing turbine by mesolow communicating pipe bleed steam pipework by low pressure Steam is delivered to pressure matcher；Motor-driven valve III, and pressure and temp detector III are provided with mesolow communicating pipe bleed steam pipework, The pressure and temp detector III is used for the temperature and pressure for detecting the low-pressure steam entered in backwater heater.The backwater Motor-driven valve IV is installed between heater 2 and pressure matcher 3.
A kind of reducing-and-cooling plant also includes PLC control cabinet and Surveillance center, the motor-driven valve I, pressure and temp detector Ith, motor-driven valve II, pressure and temp detector II, motor-driven valve III, pressure and temp detector III and motor-driven valve IV control with PLC respectively Cabinet connects, and PLC control cabinet controls the action of corresponding motor-driven valve according to temperature and pressure everywhere；The pressure and temp detection Device I, pressure and temp detector II and pressure and temp detector III include pressure sensor, temperature sensor, signal transacting respectively Device, single-chip microcomputer and wireless launcher, the pressure sensor, temperature sensor are connected with signal processor respectively, the letter The data signal that number processor will convert into is delivered to single-chip microcomputer, the temperature that the single-chip microcomputer control wireless launcher will detect By being transmitted wirelessly to Surveillance center, the Surveillance center is provided with radio receiver for degree and pressure signal.
Admission line of the reducing-and-cooling plant also in high steam, pressure matcher outlet vapor pipeline 104 and in Alarm is respectively arranged with low pressure communicating pipe bleed steam pipework 102, alarm is provided with the admission line of the high steam I, alarm II is provided with the pressure matcher outlet vapor pipeline 104, on the mesolow communicating pipe bleed steam pipework 102 It is provided with alarm III；Three alarms connect with corresponding single-chip microcomputer respectively, and the single-chip microcomputer passes through warning message Wireless launcher passes to Surveillance center.
The operation principle of the present invention is as follows：When supplying thermal condition is run, the motor-driven valve I of bleed steam pipework 101 is opened, external The motor-driven valve IV of blow-off line 103 of steam condenser is opened, mesolow cylinder communicating pipe bleed steam pipework 102 motor-driven valve III open, press The motor-driven valve II of power adaptation exhaust line 104 is opened, and vapour source is derived from 3 grades and draws gas or high steam and draw gas communicating pipe, and 3 grades are drawn gas Or high steam scope, in 3.0 ~ 26.0Mpa, 300 ~ 580 DEG C, draw gas communicating pipe about 0.5 ~ 1.6Mpa, 160 ~ 300 DEG C, pressure Orchestration puts into operation.Pressure matcher exhaust temperature and pressure are adjusted by the regulation door on extraction line, steam discharge steams for middle pressure Vapour about 1.3 ~ 4.0Mpa, 230 ~ 400 DEG C, for industrial thermic load.
Pressure and temp detector I, pressure and temp detector II and pressure and temp detector III are each by what is detected respectively The temperature and pressure signal of steam in pipeline, passes to PLC control cabinet, while is wirelessly transmitted to Surveillance center, PLC control cabinet adjusts motor-driven valve I, motor-driven valve II, motor-driven valve III and motor-driven valve IV according to the temperature and pressure signal received Switch, realize automatic detection and operation.
Once pressure and temp detector I, pressure and temp detector II and pressure and temp detector III detect pressure and temperature Degree information has exceeded threshold value, and PLC control cabinet will close corresponding motor-driven valve, send alarm, and by warning message and pressure and temperature Feedback of the information is spent to Surveillance center, reminds staff to check in time.
When non-supplying thermal condition is run, the motor-driven valve I of bleed steam pipework 101 is closed, the blow-off line of externally arranged steam cooler 103 motor-driven valves IV are closed, mesolow cylinder communicating pipe bleed steam pipework 102 motor-driven valve III close, the electricity of pressure matcher exhaust line 104 Dynamic valve II, pressure matcher is not run.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, Under the premise of general idea of the present invention is not departed from, some changes and improvements can also be made, these should also be considered as the present invention's Protection domain.

Claims (6)

  1. A kind of 1. reducing-and-cooling plant, it is characterised in that：It includes condensing turbine（1）, backwater heater（2）, pressure Orchestration（3）, the condensing turbine（1）3 grades of intermediate pressure cylinder draw gas or high steam is delivered to backwater by bleed steam pipework and added Hot device（2）, backwater heater（2）Steam discharge and condensing turbine（1）Draw gas mesolow cylinder communicating pipe and pass through bleed steam pipework It is delivered to pressure matcher（3）, pressure matcher（3）Steam discharge is used for heat supply, the backwater heater（2）Outlet pass through valve Pipeline is connected to pressure matcher（3）；
    Also include PLC control cabinet, four motor-driven valves, three pressure and temp detectors, three alarms and Surveillance center；
    The backwater heater（2）Admission line on be provided with motor-driven valve I, and pressure and temp detector I, pressure and temp detection Device I enters backwater heater for detection（2）In high steam temperature and pressure；
    Wherein, the pressure matcher（3）Steam discharge pass through pressure matcher outlet vapor pipeline（104）Outward supplying heat；It is described Pressure matcher outlet vapor pipeline（104）On be provided with motor-driven valve II, and pressure and temp detector II, described pressure temperature Spend the temperature and pressure that detector II is used to detect the middle pressure steam for industrial thermic load；
    Wherein, described condensing turbine（1）Pass through mesolow communicating pipe bleed steam pipework（102）Low-pressure steam is delivered to pressure Power adaptation（3）；Mesolow communicating pipe bleed steam pipework（102）On be provided with motor-driven valve III, and pressure and temp detector III, it is described Pressure and temp detector III enters backwater heater for detection（2）In low-pressure steam temperature and pressure；
    The backwater heater（2）With pressure matcher（3）Between motor-driven valve IV is installed；
    The reducing-and-cooling plant also includes PLC control cabinet and Surveillance center, the motor-driven valve I, pressure and temp detector I, electricity Dynamic valve II, pressure and temp detector II, motor-driven valve III, pressure and temp detector III and motor-driven valve IV connect with PLC control cabinet respectively Connect, PLC control cabinet controls the action of corresponding motor-driven valve according to temperature and pressure everywhere；The pressure and temp detector I, Pressure and temp detector II and pressure and temp detector III include pressure sensor, temperature sensor, signal processor, list respectively Piece machine and wireless launcher, the pressure sensor, temperature sensor are connected with signal processor respectively, the signal transacting The data signal that device will convert into is delivered to single-chip microcomputer, and the single-chip microcomputer controls wireless launcher by the temperature detected and pressure For force signal by being transmitted wirelessly to Surveillance center, the Surveillance center is provided with radio receiver；
    Admission line, pressure matcher outlet vapor pipeline of the reducing-and-cooling plant also in high steam（104）It is low with Press communicating pipe bleed steam pipework（102）On be respectively arranged with alarm, be provided with alarm on the admission line of the high steam I, the pressure matcher outlet vapor pipeline（104）On be provided with alarm II, the mesolow communicating pipe bleed steam pipework （102）On be provided with alarm III；Three alarms connect with corresponding single-chip microcomputer respectively, and the single-chip microcomputer is by alarm signal Breath passes to Surveillance center by wireless launcher.
  2. A kind of 2. reducing-and-cooling plant according to claim 1, it is characterised in that：The backwater heater（2）Using outer Put formula steam condenser.
  3. A kind of 3. reducing-and-cooling plant according to claim 1, it is characterised in that：The pressure matcher（3）It is also connected with There is pressure digital display instrument.
  4. A kind of 4. reducing-and-cooling plant according to claim 1, it is characterised in that：Described 3 grades draw gas or high steam Pressure limit in 3.0 ~ 26.0Mpa, temperature range is at 300 ~ 580 DEG C.
  5. A kind of 5. reducing-and-cooling plant according to claim 1, it is characterised in that：Described mesolow cylinder communicating pipe draws gas Pressure be 0.5 ~ 1.6Mpa, temperature is 160 ~ 300 DEG C.
  6. A kind of 6. reducing-and-cooling plant according to claim 1, it is characterised in that：The pressure matcher（3）Steam discharge For middle pressure steam, pressure is 1.3 ~ 4.0Mpa, and temperature is 230 ~ 400 DEG C.
CN201611177271.XA 2016-12-19 2016-12-19 A kind of reducing-and-cooling plant Expired - Fee Related CN106640239B (en)

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CN106988809B (en) * 2017-03-21 2019-07-02 华电电力科学研究院有限公司 A kind of one Systemic Burden self-regulation structure of extraction steam for factories net source and its adjusting method
CN107504544B (en) * 2017-09-19 2022-09-27 国能南京电力试验研究有限公司 High-medium pressure combined heating system based on energy level matching
CN109976419B (en) * 2019-02-27 2021-01-01 武汉中电节能有限公司 Automatic control system and method for temperature and pressure reduction of regional cooling and heating steam
CN110030050A (en) * 2019-04-11 2019-07-19 广州发展集团股份有限公司 A kind of combined cycle system and operating procedure
CN112554964A (en) * 2020-12-10 2021-03-26 神华福能（福建雁石）发电有限责任公司 Steam turbine unit and control method
CN114906898A (en) * 2022-04-13 2022-08-16 西安热工研究院有限公司 System and method for desalinating seawater by using heat supply back pressure steam turbine generator unit

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JP2007046504A (en) * 2005-08-08 2007-02-22 Hitachi Ltd Steam turbine control system
JP4578354B2 (en) * 2005-08-30 2010-11-10 株式会社日立エンジニアリング・アンド・サービス Waste heat utilization equipment for steam turbine plant
CN101672201B (en) * 2008-09-12 2012-11-07 沈阳飞鸿达节能设备技术开发有限公司 Novel heat-power cogeneration steam turbine
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CN106194297A (en) * 2016-09-27 2016-12-07 上海电气电站设备有限公司 The double branch road heating system of a kind of cogeneration turbine

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Address after: 450007 Zhengzhou Zhongyuan Road, Henan, No. 212

Patentee after: China Electric Power Construction Group Henan electric survey and Design Institute Co., Ltd.

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