CN206904956U - A kind of auxiliary steam steam-supplying system of coal unit - Google Patents
A kind of auxiliary steam steam-supplying system of coal unit Download PDFInfo
- Publication number
- CN206904956U CN206904956U CN201720860582.XU CN201720860582U CN206904956U CN 206904956 U CN206904956 U CN 206904956U CN 201720860582 U CN201720860582 U CN 201720860582U CN 206904956 U CN206904956 U CN 206904956U
- Authority
- CN
- China
- Prior art keywords
- steam
- unit
- heat
- auxiliary
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
It the utility model is related to a kind of auxiliary steam steam-supplying system of coal unit,Can effectively solve when unit load is low,A part of heat energy of power plant is first stored,Heat energy is released until load is high or during accident,Condensate is heated into the problem of steam uses for auxiliary steam,Technical scheme is,Including steam turbine,Oxygen-eliminating device,Unit condensate comes water system and unit auxiliary steam header,It is characterized in that,The auxiliary steam steam-supplying system also includes steam extract system,Heat exchanger,Drainage control system,Accumulation of heat and steam raising plant,The utility model is when unit load is low,A part of heat energy of power plant is first stored,Heat energy is released until load is high or during accident,Condensate is heated into steam to use for auxiliary steam,Improve the reliability and quality of unit operation and single subsidiary engine Design assistant steam source,Be advantageous to unit depth peak regulation,Add the security of unit,Improve the economy of unit.
Description
Technical field
It the utility model is related to air supply system, the auxiliary steam steam-supplying system of particularly a kind of coal unit.
Background technology
At present, in order to improve Unit Economic performance, increasing large sized unit design uses single steam feed pump.Machine
The reliability of the Auxiliary Steam of group is more and more important, is nowadays designed with two kinds of vapour source modes：One kind is using as the occasion requires（It is or old
Factory's vapour source）, one kind is to use starting trouble.With the electricity market development situation that supply exceed demand, power plants generating electricity hourage
Reduce year by year, as the occasion requires vapour source（Or old factory carrys out vapour）It is unreliable gradually to have become, and the power plant for more units having only has a unit
In longtime running, starting trouble can not meet the requirement of the quick steam supply to unit auxiliary steam again.
Quick hair has been obtained with continuous ripe and application, the high-temperature phase-change storing technology of solar energy thermal-power-generating unit
Exhibition.The thermal storage density of phase-change material, mechanical strength, cyclical stability, the heat loss in energy transfer process and between medium and it is situated between
The problems such as compatibility between matter and storage heater, is well solved.Binary nitric acid fused salt operating temperature is steamed at 500~565 DEG C
The efficiency of vapour Rankine cycle is up to 40%.Binary carbonic acid fused salt operating temperature is even as high as 850 DEG C, and caused vapor (steam) temperature is up to
More than 580 DEG C, supercritical generating can be achieved, to obtain higher steam Rankine cycle efficiency.
When power plant runs, how to ensure the supply of auxiliary steam when unit load is high or during accident, ensure unit
Safe and reliable operation, become those skilled in the art's concern.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the utility model is just to provide one kind and is used for magnetic
The positioning auxiliary transmission device of saturator, can effectively solve, when unit load is low, a part of heat energy of power plant first have been stored
Come, release heat energy until load is high or during accident, condensate is heated into steam for auxiliary steam use, so as to ensure machine
The problem of safe and reliable operation of group.
The utility model solve technical scheme be：
A kind of auxiliary steam steam-supplying system of coal unit, including steam turbine, oxygen-eliminating device, unit condensate come water system and
Unit auxiliary steam header, it is characterised in that the auxiliary steam steam-supplying system also includes steam extract system, heat exchanger, dredged
Water control system, accumulation of heat and steam raising plant, steam of the steam (vapor) outlet through steam extract system and heat exchanger of steam turbine
Import is connected, and the liquid outlet of heat exchanger is connected with the import of drainage control system, the liquid outlet of drainage control system and deoxygenation
The import of device is connected, and accumulation of heat on steam raising plant with being provided with the recuperated cycle pipeline for stretching into heat exchanger, recuperated cycle pipe
Import, the outlet in road are connected with accumulation of heat with fused salt outlet, the fused salt import of steam raising plant respectively, are set on recuperated cycle pipeline
Be equipped with pump for liquid salts, the water side that accumulation of heat carrys out water system with the water inlet of steam raising plant with unit condensate is connected, accumulation of heat with
The steam (vapor) outlet of steam raising plant is connected with the air inlet of unit auxiliary steam header.
Described accumulation of heat includes housing, steam pipe coil and water pump with steam raising plant, and steam pipe coil is arranged on housing
It is interior, it is connected after the lower end stretching housing of steam pipe coil with water inlet pipe, upper end is connected after stretching out housing with steam outlet pipe, and housing cavity is made
For heat transfer space, the interior fused salt filled with parcel steam pipe coil of heat transfer space, the water side of water pump is connected with water inlet pipe, water inlet end
Carry out water system with unit condensate to be connected, housing upper end is provided with the fused salt circulation import that the outlet with recuperated cycle pipeline is connected
Pipe, lower end is provided with the fused salt loop exit pipe being connected with the import of recuperated cycle pipeline, forms the recuperated cycle passage of fused salt.
Described steam outlet pipe is connected with unit auxiliary steam header, and pressure sensor, temperature are disposed with steam outlet pipe
Sensor and first flow regulating valve, pressure sensor, temperature sensor and first flow regulating valve respectively with the first controller
It is connected, forms steam condition automatic control structure.
Described drainage control system includes storing liquid case, stores and feed tube is provided with the top of liquid case, the bottom for storing liquid case is set
The drain pipe being connected with oxygen-eliminating device is equipped with, second flow regulating valve is provided with feed tube, the 3rd flow is provided with drain pipe
Regulating valve, storage liquid case bottom are provided with the liquid level sensor for detecting liquid level, second flow regulating valve, the 3rd flow control valve
It is connected respectively with second controller with liquid level sensor, forms hydrophobic structure.
The utility model structure novel and unique, advantages of simple, can export very high steam quality can meet unit just
Normal demand, when unit load is low, a part of heat energy of power plant is first stored, by heat energy until load is high or during accident
Release, condensate is heated into steam uses for auxiliary steam, improves source and the quality of unit auxiliary steam, improves list
Machine is run and the reliability and quality of single subsidiary engine Design assistant steam source, is also beneficial to unit depth peak regulation, adds unit
Security, while also improve unit economy, ensure that the safe operation of unit, easy to use, effect is good, has good
Social and economic benefit.
Brief description of the drawings
Fig. 1 is the utility model frame connection diagram.
Fig. 2 is the structural representation of the utility model accumulation of heat and steam raising plant.
Fig. 3 is the structural representation of the utility model drainage control system.
Embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing.
Provided by Fig. 1 to Fig. 3, the utility model includes steam turbine 1, oxygen-eliminating device 8, unit condensate and comes water system 12 and machine
Group auxiliary steam header 11, the auxiliary steam steam-supplying system also includes steam extract system 2, heat exchanger 3, drainage control system
7th, accumulation of heat and steam raising plant 9, steam inlet phase of the steam (vapor) outlet through steam extract system 2 with heat exchanger 3 of steam turbine 1
Even, the liquid outlet of heat exchanger 3 is connected with the import of drainage control system 7, liquid outlet and the oxygen-eliminating device 8 of drainage control system 7
Import be connected, be provided with the recuperated cycle pipeline 5 for stretching into heat exchanger 3, recuperated cycle pipe on accumulation of heat and steam raising plant 9
Import, the outlet in road 5 are connected with accumulation of heat with fused salt outlet, the fused salt import of steam raising plant 9 respectively, recuperated cycle pipeline 5
On be provided with pump for liquid salts 6, water inlet and the unit condensate of accumulation of heat and steam raising plant 9 carry out the water side phase of water system 12
Even, accumulation of heat is connected with the steam (vapor) outlet of steam raising plant 9 with the air inlet of unit auxiliary steam header 11.
To ensure using effect, described accumulation of heat includes housing 91, steam pipe coil 95 and water pump with steam raising plant 9
98, steam pipe coil 95 is arranged on the interior of housing 91, is connected after the lower end stretching housing of steam pipe coil 95 with water inlet pipe 97, upper end is stretched
It is connected after going out housing with steam outlet pipe 96, steam pipe coil is wrapped up in the inner chamber of housing 91 as heat transfer space, interior be filled with of heat transfer space
Fused salt 94, the water side of water pump 98 are connected with water inlet pipe 97, and water inlet end carrys out water system 12 with unit condensate and is connected, housing upper end
The fused salt circulation inlet tube 92 that the outlet with recuperated cycle pipeline 5 is connected is provided with, lower end is provided with and recuperated cycle pipeline 5
The connected fused salt loop exit pipe 93 of import, form the recuperated cycle passage of fused salt；
Described steam outlet pipe 96 is connected with unit auxiliary steam header 11, and pressure sensor is disposed with steam outlet pipe 96
13rd, temperature sensor 14 and first flow regulating valve 16, pressure sensor 13, temperature sensor 14 and first flow regulating valve 16
It is connected respectively with the first controller 15, forms steam condition automatic control structure；The pressure of the auxiliary steam exported for control,
Temperature and flow；Described first flow regulating valve 16 can use magnetic valve, the first controller, pressure sensor and TEMP
Device is commercially available prod, and the first controller can receive the pressure signal of pressure sensor and the temperature signal of temperature sensor,
Then to first flow regulating valve open and close and aperture is adjusted.
Heat-insulation layer is provided with the described outer wall of housing 91；
Described fused salt is binary nitric acid fused salt or binary carbonic acid fused salt.
On described heat exchanger 3 equipped be connected with its inner chamber, with the air ejector 4 vacuumized in advance.
Described drainage control system 7 includes storing liquid case 71, and the top for storing liquid case 71 is provided with feed tube 72, stores liquid case 71
Bottom be provided with the drain pipe 74 being connected with oxygen-eliminating device 8, drain pipe 74 is connected with the import of oxygen-eliminating device 8, is set on feed tube 72
Second flow regulating valve 73 is equipped with, the 3rd flow control valve 77 is provided with drain pipe 74, storage liquid case 71 bottom, which is provided with, to be used for
Detect liquid level liquid level sensor 76, second flow regulating valve 73, the 3rd flow control valve 77 and liquid level sensor 76 respectively with
Second controller 75 is connected, and forms hydrophobic structure；Described second flow regulating valve 73, the 3rd flow control valve 77 can use
Magnetic valve, second controller and liquid level sensor are commercially available prod, and second controller can receive the liquid level of liquid level sensor
Signal, then to second flow regulating valve and the 3rd flow control valve open and close and aperture is adjusted.
The utility model by air ejector 4 to the inner chamber of heat exchanger 3 in use, first vacuumized, then in machine
When group load is low, start steam extract system 2, steam extract system can use conventional air ejector, by the cylinder of steam turbine 1
High-temperature steam be extracted into the heat transfer space of the inner chamber of heat exchanger 3, fused salt is circulated by pump for liquid salts in recuperated cycle pipeline, is followed
Ring to heat exchanger heat transfer space when heat-shift, by fused salt by temperature storage in accumulation of heat and steam raising plant, heat
Steam after exchanger heat-shift changes into the storage liquid case that water is sent into drainage control system, stores liquid case middle and upper part and is divided into remnants'
Fraction steam, bottom are divided into water, and when water reach a certain height, the second liquid level sensor 76 is signaled to control, control
The 3rd flow control valve 77 on drain pipe 74 is opened in device control, feeds the water into the conventional water circulation that oxygen-eliminating device 8 participates in steam turbine；
When the load is high or during accident, water pump 915 is opened, unit condensate is carried out into water system 12（The water side of condenser）By entering
Water pipe 97 is sent into steam pipe coil 95, and water is in steam pipe coil with being converted into high-temperature water vapor after the fused salt heat exchanging in housing 91 from going out
Steam pipe 96 is discharged to unit auxiliary steam header 11, as auxiliary steam steam supply；So as to improve the source of unit auxiliary steam
And quality, increase ensure that the safe operation of unit.In unit unit operation, stop once generation is non-, the auxiliary steam source of unit
It will lose, the axle envelope of unit and the vapour source of feed pump turbine are disappeared immediately, and potential safety hazard is left for unit.As above vapour Siemens
Type is higher to axle envelope temperature requirement, and normal auxiliary steam source can not reach its design requirement, and the utility model can export
Very high steam quality can meet the normal demand of unit, can be unit by accumulation of heat and steam unit when the unit non-stopping time
The safe and stable operation that auxiliary steam had both ensured unit is provided, is also beneficial to the fast quick-recovery of unit, particularly single steam-operating is fed water
The unit of pump is advantageously.Simultaneously in normal operation, the peak regulation of power network can be participated in, the normal peak modulation capacity of unit most as little as pot
Stove minimum steady fires operating mode, and this system can get up a part of heat storage of unit, effectively reduce the Peak Load of unit, etc.
When power network needs to meet（Unit high load capacity）, the flow that extract system supplies auxiliary vapour is reduced, increases the flow that this system supplies auxiliary vapour, carries
The economy of high unit, easy to use, effect is good, there is good social and economic benefit.
Claims (6)
1. a kind of auxiliary steam steam-supplying system of coal unit, including steam turbine（1）, oxygen-eliminating device（8）, unit condensate carry out water system
System（12）With unit auxiliary steam header（11）, it is characterised in that the auxiliary steam steam-supplying system also includes steam extract system
（2）, heat exchanger（3）, drainage control system（7）, accumulation of heat and steam raising plant（9）, steam turbine（1）Steam (vapor) outlet through steam
Vapour extract system（2）With heat exchanger（3）Steam inlet be connected, heat exchanger（3）Liquid outlet and drainage control system（7）
Import be connected, drainage control system（7）Liquid outlet and oxygen-eliminating device（8）Import be connected, accumulation of heat and steam raising plant（9）
On be provided with and stretch into heat exchanger（3）Recuperated cycle pipeline（5）, recuperated cycle pipeline（5）Import, outlet respectively with accumulation of heat
With steam raising plant（9）Fused salt outlet, fused salt import be connected, recuperated cycle pipeline（5）On be provided with pump for liquid salts（6）, store
Heat and steam raising plant（9）Water inlet and unit condensate carry out water system（12）Water side be connected, accumulation of heat and steam are sent out
Generating apparatus（9）Steam (vapor) outlet and unit auxiliary steam header（11）Air inlet be connected.
2. the auxiliary steam steam-supplying system of coal unit according to claim 1, it is characterised in that described accumulation of heat and steaming
Vapour generating means（9）Including housing（91）, steam pipe coil（95）And water pump（98）, steam pipe coil（95）It is arranged on housing（91）'s
It is interior, steam pipe coil（95）Lower end stretch out housing after with water inlet pipe（97）Connection, upper end stretch out housing after with steam outlet pipe（96）Even
Connect, housing（91）Inner chamber is as heat transfer space, the interior fused salt filled with parcel steam pipe coil of heat transfer space（94）, water pump（98）'s
Water side and water inlet pipe（97）Connection, water inlet end carry out water system with unit condensate（12）Connection, housing upper end is provided with and changed
Thermal cycle pipeline（5）The connected fused salt circulation inlet tube in outlet（92）, lower end is provided with and recuperated cycle pipeline（5）Import
Connected fused salt loop exit pipe（93）, form the recuperated cycle passage of fused salt.
3. the auxiliary steam steam-supplying system of coal unit according to claim 2, it is characterised in that described steam outlet pipe
（96）With unit auxiliary steam header（11）It is connected, steam outlet pipe（96）On be disposed with pressure sensor（13）, TEMP
Device（14）With first flow regulating valve（16）, pressure sensor（13）, temperature sensor（14）With first flow regulating valve（16）
Respectively with the first controller（15）It is connected, forms steam condition automatic control structure.
4. the auxiliary steam steam-supplying system of coal unit according to claim 2, it is characterised in that described housing（91）
Heat-insulation layer is provided with outer wall.
5. the auxiliary steam steam-supplying system of coal unit according to claim 1, it is characterised in that described heat exchanger
（3）It is upper equipped be connected with its inner chamber, with the air ejector vacuumized in advance（4）.
6. the auxiliary steam steam-supplying system of coal unit according to claim 1, it is characterised in that described hydrophobic control
System（7）Including storing liquid case（71）, store liquid case（71）Top be provided with feed tube（72）, store liquid case（71）Bottom be provided with
With oxygen-eliminating device（8）Connected drain pipe（74）, feed tube（72）On be provided with second flow regulating valve（73）, drain pipe（74）On
It is provided with the 3rd flow control valve（77）, store liquid case（71）Bottom is provided with the liquid level sensor for detecting liquid level（76）, the
Two flow control valves（73）, the 3rd flow control valve（77）And liquid level sensor（76）Respectively with second controller（75）It is connected,
Form hydrophobic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720860582.XU CN206904956U (en) | 2017-07-17 | 2017-07-17 | A kind of auxiliary steam steam-supplying system of coal unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720860582.XU CN206904956U (en) | 2017-07-17 | 2017-07-17 | A kind of auxiliary steam steam-supplying system of coal unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206904956U true CN206904956U (en) | 2018-01-19 |
Family
ID=61313039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720860582.XU Expired - Fee Related CN206904956U (en) | 2017-07-17 | 2017-07-17 | A kind of auxiliary steam steam-supplying system of coal unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206904956U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776038A (en) * | 2021-10-15 | 2021-12-10 | 鸿蒙能源(山东)有限公司 | Ultralow-consumption electromagnetic induction evaporation industrial steam system |
| CN114673978A (en) * | 2022-03-29 | 2022-06-28 | 西安热工研究院有限公司 | Steam generation system of high-temperature gas cooled reactor steam turbine shaft seal system |
| CN115324673A (en) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | System for coal-electric machine set to participate in power grid peak shaving and control method |
| CN116734235A (en) * | 2023-08-02 | 2023-09-12 | 瑞纳智能设备股份有限公司 | Peak-to-frequency modulation system and method using steam heat supply network |
-
2017
- 2017-07-17 CN CN201720860582.XU patent/CN206904956U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776038A (en) * | 2021-10-15 | 2021-12-10 | 鸿蒙能源(山东)有限公司 | Ultralow-consumption electromagnetic induction evaporation industrial steam system |
| CN113776038B (en) * | 2021-10-15 | 2023-09-22 | 鸿蒙能源(山东)有限公司 | Ultra-low power consumption electromagnetic induction evaporation industrial steam system |
| CN114673978A (en) * | 2022-03-29 | 2022-06-28 | 西安热工研究院有限公司 | Steam generation system of high-temperature gas cooled reactor steam turbine shaft seal system |
| CN114673978B (en) * | 2022-03-29 | 2024-03-26 | 西安热工研究院有限公司 | Steam generating system of high-temperature gas cooled reactor steam turbine shaft seal system |
| CN115324673A (en) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | System for coal-electric machine set to participate in power grid peak shaving and control method |
| CN115324673B (en) * | 2022-07-25 | 2024-05-24 | 广西电网有限责任公司电力科学研究院 | System for participating in power grid peak shaving of coal motor group and control method |
| CN116734235A (en) * | 2023-08-02 | 2023-09-12 | 瑞纳智能设备股份有限公司 | Peak-to-frequency modulation system and method using steam heat supply network |
| CN116734235B (en) * | 2023-08-02 | 2023-12-05 | 瑞纳智能设备股份有限公司 | Peak-to-frequency modulation system and method using steam heat supply network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206904956U (en) | A kind of auxiliary steam steam-supplying system of coal unit | |
| US9909496B2 (en) | Power generation system | |
| CN206176325U (en) | A steam generation system for solar photothermal power | |
| CN206889028U (en) | A kind of single steam feed pump unit feed pump turbine vapour source | |
| CN204987536U (en) | High temperature heating device based on lithium bromide absorption heat pump unit | |
| CN107246289A (en) | The device and its method of work of peak-load regulation are realized in a kind of utilization fuse salt accumulation of heat | |
| CN109184812A (en) | The system and method that nuclear energy coupling chemistry based on two circuit boilers can generate electricity | |
| CN104302975B (en) | Auxiliary steam maker system for power plant | |
| CN104534438A (en) | Energy-saving boiler | |
| CN206345827U (en) | A kind of crude distillation tower top WHRS | |
| CN202338891U (en) | Natural circulation waste heat boiler | |
| CN109441577A (en) | Absorption heat pump cogeneration units recirculated cooling water tower operation method above freezing | |
| CN207661753U (en) | A kind of coke dry quenching boiler waterworks | |
| CN206177058U (en) | Steel rolling steam waste heat two-stage comprehensive recycling system | |
| CN209355210U (en) | Full load steam generating system for solar energy thermo-power station | |
| CN213983493U (en) | Steam utilization device in phthalic anhydride production | |
| CN209431389U (en) | A kind of waste incineration and generating electricity heat energy recycling system of air compressor | |
| CN207584746U (en) | A kind of gas fired-boiler stand-by heat activation system | |
| CN203501816U (en) | Thermal cycle control device for low-temperature waste heat power generation system of dry-process cement production line | |
| CN106382620A (en) | Low-pressure water supply system for steam extraction and backheating of power station unit | |
| CN202254899U (en) | Waste heat generating equipment system of carbon production line | |
| CN205955783U (en) | Draw gas low -pressure system of heating boiler feedwater of power station steam turbine | |
| CN204313264U (en) | Waste gas residual heat boiler peculiar to vessel | |
| CN110529834A (en) | A kind of dry coke quenching superhigh temperature super-pressure parameter co-generation unit and method | |
| CN104390200A (en) | Marine exhaust gas waste heat boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20190717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |