CN206647143U - TRT with resuperheat system - Google Patents
TRT with resuperheat system Download PDFInfo
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- CN206647143U CN206647143U CN201720047122.5U CN201720047122U CN206647143U CN 206647143 U CN206647143 U CN 206647143U CN 201720047122 U CN201720047122 U CN 201720047122U CN 206647143 U CN206647143 U CN 206647143U
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- steam
- steam turbine
- boiler
- outlet
- resuperheat
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Abstract
It the utility model is related to a kind of TRT with resuperheat system, it is characterised in that：Include boiler, the superheater on boiler successively, the output end of the superheater connects with the first input port of steam turbine, the input shaft of the output axis connection generator of the steam turbine, reheater is additionally provided with the boiler, there is the first steam outlet connected with reheater vapor inlet port, the steam outlet of reheater connects with the second input port of steam turbine on steam turbine.The utility model has the advantage of：After steam resuperheat, not only improve exhaust steam mass dryness fraction, and make steam only once on the premise of condensation heat, it is secondary to be overheated in boiler, and secondary useful enthalpy drop is released in steam turbine, thermal efficiency of cycle is improved, while does not make exhaust steam humidity too high, improves the economy and security of unit.The utility model can make power plant's overall thermal efficiency improve about 2% using the TRT with resuperheat system, and generating standard consumption reduces 36g/kW.h.
Description
Technical field：
It the utility model is related to a kind of TRT with resuperheat system.
Background technology：
The alkali metal of biomass（Potassium, sodium）Content is higher, while the content of Cl element in herbaceous stem biolobic material fuel is higher,
These result in the significant corrosion problems of biomass boiler high temperature superheater.Biomass boiler high temperature superheater corrosion type master
To be the high-temperature fusion corrosion of alkali metal chloride, and there is typical corrosion temperature section.I.e. when main steam temperature is less than 450
DEG C when, high temperature superheater tube wall no corrosion phenomenon.And these current boiler thermal outputs are slightly lower.
The content of the invention：
The purpose of this utility model is to provide a kind of TRT with resuperheat system, the band resuperheat system
Generating device structure it is simple, reasonable in design, advantageously account for improving while biomass boiler high temperature superheater etching problem
The thermal efficiency of cycle in power station.
TRT of the utility model with resuperheat system, it is characterised in that：Include boiler successively, on boiler
Superheater, the output end of the superheater connects with the first input port of steam turbine, the output shaft of the steam turbine
The input shaft of generator is connected, reheater is additionally provided with the boiler, has on steam turbine and connects with reheater vapor inlet port
The first logical steam outlet, the steam outlet of reheater connect with the second input port of steam turbine.
Further, the above-mentioned steam outlet of steam turbine second is connected with the import of condenser, the condenser
Outlet is connected with the import of condensate pump, and the outlet of the condensate pump is connected with the import of low-pressure heater, described low
Pressure heater outlet is connected with the import of oxygen-eliminating device, and the outlet of the oxygen-eliminating device is through boiler feed pump and inlet of high pressure heater
It is connected, the high-pressure heater outlet is connected with set economizer in boiler.
Further, gland steam heater is provided between above-mentioned condensate pump and low-pressure heater.
Further, water jet air ejector and water-jet pump are connected to by above-mentioned condenser.
Further, above-mentioned steam turbine is provided with leads to returning for low-pressure heater, oxygen-eliminating device and high-pressure heater respectively
Heat heating extraction opening.
Further, the input connection supplement water of above-mentioned oxygen-eliminating device.
Operation principle of the present utility model：The main steam come out from boiler superheater expands work in steam turbine pneumatic cylinder
After work(, the decreased steam of pressure, the temperature of discharge, led in boiler reheater and reheated by the first steam outlet
To improve temperature, then it is sent into again by the input port of steam turbine second in steam turbine pneumatic cylinder and continues expansion working.
The utility model has the advantage of：In the case where steam initial temperature is certain, steam turbine can be arranged by improving its first pressing
Vapour humidity improves, and will make steam turbine last stage blade because water attack is damaged, after steam resuperheat, not only carries exhaust steam mass dryness fraction
Height, and make steam only once on the premise of condensation heat, it is secondary to be overheated in boiler, and secondary released in steam turbine
Useful enthalpy drop, is improved thermal efficiency of cycle, while does not make exhaust steam humidity too high, improves the economy and safety of unit
Property.The utility model can make power plant's overall thermal efficiency improve about 2% using the TRT with resuperheat system, generating standard consumption
Reduce 36g/kW.h.
Brief description of the drawings：
Fig. 1 is the principle schematic of TRT of the utility model with resuperheat system.
Embodiment：
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
TRT of the utility model with resuperheat system includes boiler 1, the superheater 2 on boiler 1 successively,
The output end of the superheater 2 connects with the first input port 301 of steam turbine 3, the output axis connection of the steam turbine 3
The input shaft of generator 4, reheater 5 is additionally provided with the boiler 1, had on steam turbine 3 and the vapor inlet port of reheater 5
First steam outlet 302 of 501 connections, the steam outlet 502 of reheater connect with the second input port 303 of steam turbine
It is logical.
Further, in order to realize the circulation of steam, above-mentioned the second steam outlet of steam turbine 304 and condenser 6
Import is connected, and the outlet of the condenser 6 is connected with the import of condensate pump 7, the outlet of the condensate pump 7 and low pressure
The import of heater 8 is connected, and the outlet of low-pressure heater 8 is connected with the import of oxygen-eliminating device 9, and the oxygen-eliminating device 9 goes out
Mouth is connected through boiler feed pump 10 with the import of high-pressure heater 11, the outlet of high-pressure heater 11 and set province's coal in boiler
Device 12 is connected.
Further, in order to improve generatine set heat efficiency, between above-mentioned condensate pump and low-pressure heater packing is provided with to heat
Device 13.
Further, in order to improve generatine set heat efficiency, the water jet air ejector 14 and jetting of series winding are connected to by above-mentioned condenser
Pump 15, water jet air ejector are a a energy-conserving products for condenser vacuum and other equipment vacuums, water jet air ejector 14
It can be substituted with water-jet pump 15 by vavuum pump.
Further, in order to further improve generatine set heat efficiency, above-mentioned steam turbine is provided with leads to low-pressure heating respectively
Extraction opening 305, extraction opening 306 and the extraction opening 307 of device 8, oxygen-eliminating device 9 and high-pressure heater 11.
Further, in order to supplement water, the input connection of above-mentioned oxygen-eliminating device supplements water.
Superheater (superheater) is that the saturated steam under certain pressure is heated under relevant pressure in boiler
The heating surface of overheated steam.Its specific configuration can be the heat conducting pipe of roundabout setting.The construction of reheater is identical with superheater.
Condenser 6 is a kind of heat exchanger that turbine discharge is condensed into water, also known as steam condenser.Condenser is mainly used in vapour
Take turns in power plants, be divided into two kinds of water-cooled condenser and air cooling tubes condenser.
Condensate pump is the pump housing.
The effect of low-pressure heater be using the steam of part work(was done in steam turbine, be evacuated in heater heat to
Water, the temperature of water is improved, reduce the quantity of steam that steam turbine is discharged into condenser, reduce energy loss, improve heating power system
The cycle efficieny of system.Structure is the upright head type heater of more use.The heating surface of heater be usually with brass tube or
Straight tube beam or the U-tube bundle composition that seamless steel pipe is formed.
It can be rotating-film deaerator that oxygen-eliminating device 9, which is, be a kind of latest model thermal deaerator, and membrane deaerator principle is
Moisturizing is sprayed by certain angle in the shape of a spiral through rotating-film tube carries out heat exchange deoxygenation with heating steam, and feedwater is heated to corresponding remove
Saturation temperature under oxygen device operating pressure, removing are dissolved in the oxygen of feedwater and other gases, prevent and reduce boiler feed pipe, save
The corrosion of coal device and other auxiliary devices.
High-pressure heater is the device heated using the part pumping of steam turbine to feedwater.
Economizer（English name Economizer）It is mounted to one kind that boiler back end ductwork bottom is used for recovery waste heat
Device, the heating surface for saturation water boiler feedwater being heated under drum pressure, because it absorbs the heat of low-temperature flue gas, reduce
The exhaust gas temperature of flue gas, saves the energy, improves efficiency, so referred to as economizer.
Operation principle of the present utility model：The 9.81MPa come out from boiler superheater, 450 DEG C of main steams are in steam turbine
In pneumatic cylinder after expansion working, the decreased steam of pressure, the temperature of discharge（Pressure 2.55Mpa, 200-280 DEG C of temperature）,
Led to by the first steam outlet in boiler reheater and be reheated to 400 DEG C to improve temperature, then pass through steam turbine
By pressure 2.35MPa, the superheater steam of 400 DEG C of temperature is re-fed into steam turbine cylinder to be continued to expand second input port
Work done.
The utility model has the advantage of：In the case where steam initial temperature is certain, steam turbine can be arranged by improving its first pressing
Vapour humidity improves, and will make steam turbine last stage blade because water attack is damaged, after steam resuperheat, not only carries exhaust steam mass dryness fraction
Height, and make steam only once on the premise of condensation heat, it is secondary to be overheated in boiler, and secondary released in steam turbine
Useful enthalpy drop, is improved thermal efficiency of cycle, while does not make exhaust steam humidity too high, improves the economy and safety of unit
Property.The utility model can make power plant's overall thermal efficiency improve about 2% using the TRT with resuperheat system, generating standard consumption
Reduce 36g/kW.h.
The foregoing is only preferred embodiment of the present utility model, it is all done according to present utility model application the scope of the claims it is equal
Deng change and modification, it should all belong to covering scope of the present utility model.
Claims (6)
- A kind of 1. TRT with resuperheat system, it is characterised in that：Include boiler, the overheat on boiler successively Device, the output end of the superheater connect with the first input port of steam turbine, the output axis connection hair of the steam turbine The input shaft of motor, reheater is additionally provided with the boiler, there is the connected with reheater vapor inlet port on steam turbine One steam outlet, the steam outlet of reheater connect with the second input port of steam turbine.
- 2. the TRT according to claim 1 with resuperheat system, it is characterised in that：The steam turbine second Steam outlet is connected with the import of condenser, and the outlet of the condenser is connected with the import of condensate pump, described solidifying The outlet of pump is born water with the import of low-pressure heater to be connected, the low-pressure heater outlet is connected with the import of oxygen-eliminating device, The outlet of the oxygen-eliminating device is connected through boiler feed pump with inlet of high pressure heater, in the high-pressure heater outlet and boiler Set economizer is connected.
- 3. the TRT according to claim 2 with resuperheat system, it is characterised in that：The condensate pump with it is low Gland steam heater is provided between pressure heater.
- 4. the TRT according to claim 3 with resuperheat system, it is characterised in that：It is connected to by the condenser Water jet air ejector and water-jet pump.
- 5. the TRT according to claim 4 with resuperheat system, it is characterised in that：Set on the steam turbine Have respectively towards the backheat heating extraction opening of low-pressure heater, oxygen-eliminating device and high-pressure heater.
- 6. the TRT according to claim 5 with resuperheat system, it is characterised in that：The one of the oxygen-eliminating device is defeated Enter end connection supplement water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720047122.5U CN206647143U (en) | 2017-01-16 | 2017-01-16 | TRT with resuperheat system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720047122.5U CN206647143U (en) | 2017-01-16 | 2017-01-16 | TRT with resuperheat system |
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| Publication Number | Publication Date |
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| CN206647143U true CN206647143U (en) | 2017-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577401A (en) * | 2020-04-30 | 2020-08-25 | 宝钢工程技术集团有限公司 | Tail dehumidification device of saturated steam turbine generator unit and use method thereof |
-
2017
- 2017-01-16 CN CN201720047122.5U patent/CN206647143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577401A (en) * | 2020-04-30 | 2020-08-25 | 宝钢工程技术集团有限公司 | Tail dehumidification device of saturated steam turbine generator unit and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180205 Address after: 350003, four floor, south side of Building No. 12, B District, B District, Gulou District, Fuzhou City Patentee after: Fujian Dongguo Energy Saving Science & Technology Co., Ltd. Address before: At the 350003 Fuzhou city of Fujian Province, Bailong Road No. 3 building D Patentee before: Fang Guiping |