CN203906024U - Heating device for utilizing dead steam of thermal power plant - Google Patents
Heating device for utilizing dead steam of thermal power plant Download PDFInfo
- Publication number
- CN203906024U CN203906024U CN201420210220.2U CN201420210220U CN203906024U CN 203906024 U CN203906024 U CN 203906024U CN 201420210220 U CN201420210220 U CN 201420210220U CN 203906024 U CN203906024 U CN 203906024U
- Authority
- CN
- China
- Prior art keywords
- heating
- steam
- low
- vapour
- pressure
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000000605 extraction Methods 0.000 claims abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 238000004880 explosion Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002925 low-level radioactive waste Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 22
- 238000001816 cooling Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 induced draught fan Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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]
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a heating device for utilizing the dead steam of a thermal power plant. The heating device comprises a boiler, a steam turbine, a steam condenser, a condensing water pump, all levels of low-pressure heaters, a deaerator, a water feeding pump and an all level high-pressure heater which constitute a circular system, and further comprises a heating circulating system, wherein steam is extracted by the steam side inlet of a high-temperature section heating network heater from the low-pressure cylinder of the steam turbine; the steam side water draining outlet is connected to the water draining inlet of a low-pressure heater with the extraction pressure lower than that of the low-pressure cylinder; the steam side inlet of a low temperature section heating network heater is connected with a heating steam extracting pipeline through a heating steam extraction branch pipe provided with a jet junction station; the steam water draining outlet of the low temperature section heating network heater is connected to the water chamber of the steam condenser; the passive steam inlet of the jet junction station is connected with a pipeline between the low-pressure cylinder outlet of the steam turbine and the inlet of the steam condenser. According to the utility model, low-level waste heat can be reutilized, and the dead steam is comprehensively utilized; in addition, the water-saving the electricity-saving effects are realized in power plants.
Description
Technical field
The utility model relates to a kind of exhaust steam utilized device of thermal power plant, specifically a kind of exhaust steam heating installation of the thermal power plant based on injection junction station.
Background technique
In thermal power plant, the steam that heats out from boiler, pushing turbine acting, vapor pressure and temperature reduce gradually, and finally discharge from low pressure (LP) cylinder, are called exhaust steam.In order to realize circulating generation, this part exhaust steam enters vapour condenser from entrance, flow out with regelation Cheng Shuicong water of condensation outlet after the circulating water heat-shift of the condenser water box of flowing through, after condensate pump, feed water pump boost, sending into boiler heat absorption becomes after superheated vapor again, enters steam turbine and starts new round acting process.On the other hand, absorb the circulating water after steam turbine waste heat from exhaust, after the cooling of cooling tower evaporative heat loss, boost by circulating water pump, reenter vapour condenser heat absorption, start the circulating cooling process of a new round, the cooling water evaporating away during this time need to supplement again.
In above-mentioned cyclic process, the contained low-quality heat of turbine low pressure cylinder steam discharge is diffused in atmosphere by cooling tower, and this part waste heat losses has formed the major component of thermal power plant heat waste, in the time that pure condensate operating mode is moved in, this loss is up to nearly 60%.
Meanwhile, for exhaust steam is re-condensed into water, the moisture evaporation that also will be accompanied by circulating water enters in atmosphere, white cigarette emits in appearance power plant, affected view, this water resources loss has also formed the major component of power plant's water consumption, is the key factor of power plant's water usage.
In addition, the circulating water pump of cooling water needs continuous running, having caused certain power consumption, because circulating water pump is and power plant electric dust precipitator, induced draught fan, gas fan, main running machinery that feed water pump power consumption is suitable, is the key factor that affects Station Service Electrical-Energy rate.
Model utility content
The utility model technical issues that need to address are to provide one and make a silk purse out of a sow's ear, fully utilize waste heat from exhaust, have brought the heating arrangement that utilizes thermal power plant exhaust steam of water saving, power savings to power plant simultaneously.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is:
Utilize a heating arrangement for thermal power plant exhaust steam, comprise the circulatory system being connected to form in turn by pipeline head and the tail by boiler, steam turbine, vapour condenser, condensate pump, low-pressure heater at different levels, oxygen-eliminating device, feed water pump, high-pressure heater at different levels;
Also comprise for heat circulating system, connected to form in turn by heat supply network pipeline head and the tail by low-temperature zone heat exchangers for district heating, high temperature section heat exchangers for district heating, user side heat exchanger for heat circulating system, the heat supply network backwater mouth of user side heat exchanger connects the water side entrance of low-temperature zone heat exchangers for district heating, the water side outlet of low-temperature zone heat exchangers for district heating connects the water side entrance of high temperature section heat exchangers for district heating, and the water side outlet of high temperature section heat exchangers for district heating connects the heat supply network water-supplying mouth of user side heat exchanger;
Draw gas from the low pressure (LP) cylinder of steam turbine by heating bleed steam pipework in the vapour side entrance of described high temperature section heat exchangers for district heating, the hydrophobic outlet of vapour side of high temperature section heat exchangers for district heating is connected to the hydrophobic import than the low-pressure heater of the low one-level of low pressure (LP) cylinder extraction pressure by high temperature section hydrophobic pipeline;
The vapour side entrance of described low-temperature zone heat exchangers for district heating is provided with by one the heating suction branch connection heating bleed steam pipework that sprays junction station, the hydrophobic outlet of vapour side of low-temperature zone heat exchangers for district heating is connected to the hydroecium of vapour condenser by low-temperature zone hydrophobic pipeline, described injection junction station arranges initiatively vapour entrance and two entrances of passive vapour entrance and a jet exit, the active vapour entrance correspondence of spraying junction station connects a side of heating bleed steam pipework at heating suction branch, the jet exit correspondence of spraying junction station connects a side of the vapour side entrance of low-temperature zone heat exchangers for district heating at heating suction branch, the passive vapour entrance that sprays junction station exports the pipeline between vapour condenser entrance by the low pressure (LP) cylinder of an injection pipeline connection steam turbine,
Two sections of the front and back that described heating bleed steam pipework correspondence arranges heating suction branch all arrange control valve, spray on the heating suction branch, injection pipeline, low-temperature zone hydrophobic pipeline of active vapour inlet side of junction station control valve is set separately, the pipeline between the pipeline between vapour condenser and injection pipeline and vapour condenser and low-temperature zone hydrophobic pipeline arranges control valve separately.
Further improvement of the utility model is: described injection junction station comprises the receiving chamber, mixing chamber, the explosion chamber that are communicated with in turn, the cross-section area of receiving chamber and explosion chamber is all greater than the cross-section area of mixing chamber, initiatively vapour entrance is made up of multiple individual nozzle that are communicated with the heating suction branch of respective side respectively, initiatively vapour entrance and passive vapour entrance are arranged in receiving chamber, and jet exit is arranged on explosion chamber.
Further improvement of the utility model is: thermal power plant is 300MW unit, and the heating amount of drawing gas is that 550t/h, pressure are 0.46Mpa, and the exhaust steam displacement that low pressure (LP) cylinder enters condenser is that 100t/h, pressure are 0.018Mpa.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
The utility model is divided into two-way from steam turbine heating is drawn gas, divide two-stage to heat heat supply network backwater, by separating a part of steam in heating suction branch, introduce and spray junction station as high drive steam (active steam), utilize the injection draws low pressure cylinder steam discharge of high drive steam, the steam that mixes about 0.05Mpa that confluxes heats municipal heating systems backwater (approximately 65 DEG C) in low-temperature zone heat exchangers for district heating, utilize the latent heat of vaporization that mixed steam condensation is water that heat supply network backwater is heated to the highest 80 DEG C (it is poor that the saturated water temperature of the steam that confluxes subtracts end), heat supply network backwater after heating enters high temperature section heat exchangers for district heating again, in high temperature section heat exchangers for district heating, utilize steam turbine heating to draw gas remaining part to heat supply network backwater continuation heating, after being heated into 130 DEG C of hot water, confess as heat supply network.
The utility model is used low-grade exhaust steam used heat, turn waste into wealth, can bring following 3 incomes: by turbine discharge exhaust steam used heat is used, with the part heating of the steam turbine inferior steam discharge exhaust steam of injection of drawing gas, converge the steam for 0.05Mpa, the mixed vapour that will conflux is introduced low-temperature zone heat exchangers for district heating, heat supply network backwater is heated to approximately 80 DEG C from 65 DEG C, enter into by high temperature section heat exchangers for district heating, draw gas and be heated to 130 DEG C by 0.46MPa heating, realize used heat recycling, obtain heat supply income; Like this, in reducing exhaust steam discharge, also reduce the recirculated cooling water of cooling exhaust steam discharged to the loss of steam and water of atmosphere, obtained water-saving benefit; Due to the minimizing of quantity of circulating water, circulating water pump power consumption reduces, and has reduced power plant self power consumption, has increased ability of supplying electric power outside power plant, obtains economize on electricity income.
The utility model draws gas based on heating and sprays junction station, the low pressure (LP) cylinder waste heat from exhaust that utilizes thermal power plant to do work complete, increase power plant's heating ability, realize used heat recycling, in the situation that not increasing coal-fired consumption, significantly improve thermal power plant winter heating heat capacity approximately more than 20%, and reduce thermal power plant circulating water cooling tower water evaporation quantity, saving water resource, and reduce circulating water pump power consumption, reduce the station service power consumption rate of power station, a kind of energy-saving and water-saving consumption-reducing technological of making a silk purse out of a sow's ear.
To sum up, low side used heat is carried out used heat utilization by the utility model, makes a silk purse out of a sow's ear, and comprehensive utilization waste heat from exhaust has brought power plant's water saving, power savings simultaneously.
Brief description of the drawings
Fig. 1 is system schematic of the present utility model;
Fig. 2 is the principle schematic of spraying junction station.
Wherein, 1, boiler, 2, steam turbine, 3, vapour condenser, 4, condensate pump, 5, low-pressure heater, 6, deaerating heater, 7, feed water pump, 8, high-pressure heater, 9, cooling tower, 10, circulating water pump, 11, low-temperature zone heat exchangers for district heating, 12, high temperature section heat exchangers for district heating, 13, spray junction station, 131, receiving chamber, 132, mixing chamber, 133, explosion chamber, 134, vapour entrance initiatively, 135, passive vapour entrance, 136, jet exit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details:
A kind of heating arrangement that utilizes thermal power plant exhaust steam, as shown in Figure 1, comprise the boiler 1, steam turbine 2, the vapour side of vapour condenser 3, condensate pump 4, low-pressure heater at different levels 5, oxygen-eliminating device 6, feed water pump 7, the high-pressure heater at different levels 8 that connect in turn by pipeline head and the tail, the cycle generating system of the firepower electrical plant power supply of the common composition of above-mentioned parts.The water side of vapour condenser 3 is connected by pipeline in turn with cooling tower 9, circulating water pump 10 from beginning to end, form circulation, circulating water carries out heat exchange with the exhaust steam that the low pressure (LP) cylinder from steam turbine is discharged in vapour condenser, then enter cooling tower 9 evaporative heat loss coolings, boost through circulating water pump 10 afterwards, reenter vapour condenser 3 and absorb heat, start the circulating cooling process of a new round.
Also comprise for heat circulating system, connected to form in turn by heat supply network pipeline head and the tail by low-temperature zone heat exchangers for district heating 11, high temperature section heat exchangers for district heating 12, user side heat exchanger for heat circulating system.
First consider the water side circulation for heat circulating system: the heat supply network backwater mouth of user side heat exchanger connects the water side entrance of low-temperature zone heat exchangers for district heating 11, the water side outlet of low-temperature zone heat exchangers for district heating 11 connects the water side entrance of high temperature section heat exchangers for district heating 12, and the water side outlet of high temperature section heat exchangers for district heating 12 connects the heat supply network water-supplying mouth of user side heat exchanger.
Then consider the vapour side heat exchange source for heat circulating system: draw gas from the low pressure (LP) cylinder of steam turbine by heating bleed steam pipework in the vapour side entrance of described high temperature section heat exchangers for district heating 12, the hydrophobic outlet of vapour side of high temperature section heat exchangers for district heating 12 is connected to hydrophobic import than the low-pressure heater of the low one-level of low pressure (LP) cylinder extraction pressure 5 by high temperature section hydrophobic pipeline, and (described low one-level refers to that each low-pressure heater and heating bleed steam pipework have different exhaust points on steam turbine, and the low-pressure heater that the end of high temperature section hydrophobic pipeline connects is to be arranged in smoking on that low-pressure heater that pressure is a little little than heating bleed steam pipework.); The vapour side entrance of described low-temperature zone heat exchangers for district heating 11 connects heating bleed steam pipework by a heating suction branch, and the hydrophobic outlet of vapour side of low-temperature zone heat exchangers for district heating 11 is connected to the hydroecium of vapour condenser 3 by low-temperature zone hydrophobic pipeline, enter circulation.
On described heating suction branch, be provided with and spray junction station 13.The working principle of spraying junction station is described in conjunction with Fig. 2, sprays junction station 13 and comprise the receiving chamber 131, mixing chamber 132, the explosion chamber 133 that are communicated with in turn, the cross-section area of receiving chamber 131 and explosion chamber 133 is all greater than the cross-section area of mixing chamber 132.Initiatively vapour entrance 134 and passive vapour entrance 135 are set in receiving chamber 131, initiatively vapour entrance 134 is made up of multiple individual nozzle that are communicated with the heating suction branch of respective side respectively, can, according to the size of outer steam supplying amount, adjust quantity and aperture size that nozzle is opened.Jet exit 136 is set on explosion chamber.
Spraying the working principle of junction station is based on Bernoulli's equation, and desirable barotropic fluid is having while making steady motion under the effect of gesture volumetric force, moving fluid conservation of mechanical energy.For the incompressible homogeneous fluid in gravity field, equation is P+ ρ gh+ (1/2) ρ V
2=C, in formula, P, ρ, V are respectively pressure, density and the speed of fluid; H is plumb height; G is gravity accleration; C is constant.This formula illustrated, in the flow process of fluid, the region static pressure that flow velocity is high reduces, utilize this principle that high-pressure liquid is sprayed, manufacture local negative pressure in throat, thus can draws low pressure fluid, reach low-pressure fluid and high-pressure liquid and converge the object of boosting.
Referring to Fig. 1, active vapour entrance 134 correspondences of spraying junction station connect a side of heating bleed steam pipework at heating suction branch, again because initiatively vapour entrance 134 is made up of multiple individual nozzle that are communicated with the heating suction branch of respective side respectively, the part high pressure heating that is heating bleed steam pipework is drawn gas from heating suction branch is drawn, and is ejected into receiving chamber 131 with the form of multiple individual nozzle; The passive vapour entrance 135 that sprays junction station connects the pipeline between the outlet of low pressure (LP) cylinder and the entrance of vapour condenser 3 by an injection pipeline, and passive vapour entrance is the part low pressure (LP) cylinder exhaust steam of extracting out from low pressure (LP) cylinder steam discharge by injection pipeline; Jet exit 136 correspondences of spraying junction station connect a side of the vapour side entrance of low-temperature zone heat exchangers for district heating 11 at heating suction branch, be that heating is drawn gas and entered receiving chamber 131 from active vapour entrance 134, form local negative pressure at nozzle throat, the low pressure (LP) cylinder exhaust steam that suction enters from passive vapour entrance 135, heating is drawn gas and low pressure steam enters mixing chamber 132 by receiving chamber 131, sprays from explosion chamber 133 at the well-mixed mixed gas of mixing chamber.
In addition, two sections of the front and back that described heating bleed steam pipework correspondence arranges heating suction branch all arrange control valve, spray on heating suction branch, injection pipeline, high temperature section hydrophobic pipeline and the low-temperature zone hydrophobic pipeline of active vapour inlet side of junction station control valve is set separately.
The now specific design in explanation practical application as an example of 300MW unit example.Consider that 300MW unit adopts circulating water to carry out the cooling wet cooling gas turbine of exhaust steam, exhaust steam pressure generally operates in 4～18Kpa, adopt air to carry out the cooling air cooling turbine of exhaust steam, exhaust steam pressure generally operates in 4～32Kpa, therefore, can steam turbine be moved to back pressure in heating season and be controlled at 18 Kpa.In the time that thermal power plant is 300MW unit, the heating amount of drawing gas is that 550t/h, pressure are 0.46Mpa, and the exhaust steam displacement that low pressure (LP) cylinder enters condenser is that 100t/h, pressure are 0.018Mpa.According to temperature rise ratio, draft the highlyest in low-temperature zone heat exchangers for district heating being warmed up to 80 DEG C, heat exchanger area designs according to this.
Lower mask body is calculated each design parameter that sprays junction station:
1. spray flow velocity
According to Bernoulli's equation, P+ ρ gh+ (1/2) ρ V
2=C, steam is similar to perfect gas, and discrepancy in elevation impact is very little, so can be reduced to: P+ (1/2) ρ V
2=constant.
Utilize heating to draw gas as active steam: pressure is P
p=0.46MP, temperature is T
p=270 DEG C, density is ρ
p=1.861kg/ m
3,
Suppose that in the front pipeline of nozzle, steam flow rate is V
1=20 m/s, nozzle throat flow velocity is V
2=50m/s,
Now aspirate negative pressure and can reach 19.54KPa,
This negative pressure region is enough to aspirate the turbine discharge of steam turbine steam discharge 18KPa left and right.
2. injection flow
The draw gas parameter of drawing gas of (active steam) of heating is P
p=0.46Mpa, T
p=270 DEG C, enthalpy i
p=3004kJ/kg, ρ
p=0.537407 m
3/ kg;
The parameter of drawing gas of low pressure (LP) cylinder exhaust steam (passive steam) is P
h=0.018MPa, T
h=58 DEG C, enthalpy i
h=2606kJ/kg, ρ
h=8.445216 m
3/ kg;
Reach and join mixed vapour parameter P after vapour
cwhen=0.05MPa, steam enthalpy i after mixing
c=2649kJ/kg temperature T
c=83 DEG C, active steam is accounting approximately 7% in mixed vapour, sucks steam accounting approximately 93% in mixed vapour.
Below the subcritical steam extraction and condensing unit of above-mentioned 300MW is carried out to performance analysis:
1. heat supply benefit
The parameter of low pressure (LP) cylinder steam discharge exhaust steam is: 0.018MPa, 58 DEG C, enthalpy 2606kJ/kg, steam flow 100t/h, in the conflux parameter of hydrophobic (calculating by saturation water) after steam heat release of 0.05Mpa be: 0.05MPa, 81 DEG C, enthalpy 341kJ/kg, 100t/h exhaust steam thermal discharge: 227GJ/ h.
Calculate according to 30 yuan/GJ of caloric value, every 300MW unit heat supply benefit is 0.68 ten thousand yuan/h, and the winter heating phase calculates by operation for 4 months, and 2 unit year heat supply benefits are 3,917 ten thousand yuan.
Utilize after exhaust steam, unit generation does not reduce, and is only to have utilized exhaust steam heat, and this is heat supply net profit.
2. water-saving benefit
Because exhaust steam does not need coolingly, reduce cooling tower steam discharge loss, every unit reduces 100t/h exhaust steam, calculates by reducing by 120 t/h cooling water steam losses, and water price is 2 yuan/h, 2 unit water-saving benefits: 0.048 ten thousand yuan/h.Winter operation 4 months, 2 unit year water-saving benefit be 2,760,000 yuan.
3. economize on electricity income
When normal steam discharge, 100t/h exhaust steam, by 30 times of considerations of circulating ratio in winter.Utilize after exhaust steam, single unit quantity of circulating water reduces 3000t/h, circulating water pump economize on electricity 180KW.According to 0.4 yuan/KW of electricity price h calculate, winter operation 4 months, 2 unit year water-saving benefit be 410,000 yuan.
4. heat supply, water saving, economize on electricity total benefit
2 300MW units are totally 4,234 ten thousand yuan of the heat supply of heat supply phase, water saving, the energy-saving efficiencies of 4 months, and economic benefit is very huge.
Owing to being mainly that the heating gas utilizing is condensed into the latent heat of vaporization in water process in heat exchangers for district heating, so the height of the vapor pressure after selection converges has determined the highest water temperature that can reach of low-temperature zone heat exchangers for district heating.In Practical Project, gas pressure after can selecting according to specific needs this to mix, converge rear gas pressure and determined by the high low pressure steam ratio of converging, improve initiatively uperize accounting and just can improve and converge vapor pressure, corresponding raising low-temperature zone the highest accessible water temperature.This pressure can carry out balance according to low-temperature zone and high temperature section heat exchangers for district heating vapour amount, accomplishes that the heat exchange area of heat exchanger is all not fully exerted.
Claims (3)
1. utilize a heating arrangement for thermal power plant exhaust steam, comprise the circulatory system being connected to form in turn by pipeline head and the tail by boiler (1), steam turbine (2), vapour condenser (3), condensate pump (4), low-pressure heater at different levels (5), oxygen-eliminating device (6), feed water pump (7), high-pressure heater at different levels (8); It is characterized in that:
Also comprise for heat circulating system, connected to form in turn by heat supply network pipeline head and the tail by low-temperature zone heat exchangers for district heating (11), high temperature section heat exchangers for district heating (12), user side heat exchanger for heat circulating system, the heat supply network backwater mouth of user side heat exchanger connects the water side entrance of low-temperature zone heat exchangers for district heating (11), the water side outlet of low-temperature zone heat exchangers for district heating (11) connects the water side entrance of high temperature section heat exchangers for district heating (12), and the water side outlet of high temperature section heat exchangers for district heating (12) connects the heat supply network water-supplying mouth of user side heat exchanger;
Draw gas from the low pressure (LP) cylinder of steam turbine by heating bleed steam pipework in the vapour side entrance of described high temperature section heat exchangers for district heating (12), the hydrophobic outlet of vapour side of high temperature section heat exchangers for district heating (12) is connected to than the hydrophobic import of the low-pressure heater of the low one-level of low pressure (LP) cylinder extraction pressure (5) by high temperature section hydrophobic pipeline;
The vapour side entrance of described low-temperature zone heat exchangers for district heating (11) is provided with by one the heating suction branch connection heating bleed steam pipework that sprays junction station (13), the hydrophobic outlet of vapour side of low-temperature zone heat exchangers for district heating (11) is connected to the hydroecium of vapour condenser (3) by low-temperature zone hydrophobic pipeline, described injection junction station (13) arranges initiatively vapour entrance (134) and (135) two entrances of passive vapour entrance and a jet exit (136), spray the corresponding side that connects heating bleed steam pipework at heating suction branch of active vapour entrance (134) of junction station, spray the corresponding side that connects the vapour side entrance of low-temperature zone heat exchangers for district heating at heating suction branch of jet exit (136) of junction station, the passive vapour entrance (135) that sprays junction station exports the pipeline between vapour condenser entrance by the low pressure (LP) cylinder of an injection pipeline connection steam turbine,
Two sections of the front and back that described heating bleed steam pipework correspondence arranges heating suction branch all arrange control valve, spray on heating suction branch, injection pipeline, high temperature section hydrophobic pipeline and the low-temperature zone hydrophobic pipeline of active vapour inlet side of junction station control valve is set separately.
2. a kind of heating arrangement that utilizes thermal power plant exhaust steam according to claim 1, it is characterized in that: described injection junction station comprises the receiving chamber (131) being communicated with in turn, mixing chamber (132), explosion chamber (133), the cross-section area of receiving chamber (131) and explosion chamber (133) is all greater than the cross-section area of mixing chamber (132), initiatively vapour entrance (134) is made up of multiple individual nozzle that are communicated with the heating suction branch of respective side respectively, initiatively vapour entrance (134) and passive vapour entrance (135) are arranged in receiving chamber (131), jet exit (136) is arranged on explosion chamber (133).
3. a kind of heating arrangement that utilizes thermal power plant exhaust steam according to claim 1 and 2, it is characterized in that: thermal power plant is 300MW unit, the heating amount of drawing gas is that 550t/h, pressure are 0.46Mpa, and the exhaust steam displacement that low pressure (LP) cylinder enters condenser is that 100t/h, pressure are 0.018Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210220.2U CN203906024U (en) | 2014-04-28 | 2014-04-28 | Heating device for utilizing dead steam of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210220.2U CN203906024U (en) | 2014-04-28 | 2014-04-28 | Heating device for utilizing dead steam of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906024U true CN203906024U (en) | 2014-10-29 |
Family
ID=51780311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420210220.2U Expired - Lifetime CN203906024U (en) | 2014-04-28 | 2014-04-28 | Heating device for utilizing dead steam of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906024U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423398A (en) * | 2015-12-29 | 2016-03-23 | 华电郑州机械设计研究院有限公司 | Novel series heating network drainage system |
| CN105986849A (en) * | 2015-02-13 | 2016-10-05 | 中国电力工程顾问集团华北电力设计院有限公司 | Rear-mounted steam turbine system and method for middle steam pumping and heating |
| CN107218091A (en) * | 2017-06-14 | 2017-09-29 | 联合瑞升（北京）科技有限公司 | A kind of thermal power plant's cold end energy-conservation therrmodynamic system and operation method |
| CN107956520A (en) * | 2018-01-22 | 2018-04-24 | 程琛 | A kind of filling cooling system of zero output low pressure (LP) cylinder |
| CN108286728A (en) * | 2018-03-28 | 2018-07-17 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of power plant's step heating system |
| CN108301884A (en) * | 2017-12-27 | 2018-07-20 | 东南大学 | A kind of pumping that adding steam jet ejector coagulates heating system and its adjusting method |
| CN108798809A (en) * | 2018-08-08 | 2018-11-13 | 国电龙源电力技术工程有限责任公司 | The integrated heating system of small steam turbine coupled electricity-generation unit |
| CN109798692A (en) * | 2018-11-04 | 2019-05-24 | 大唐(北京)能源管理有限公司 | A kind of air-cooled and wet type cooling unit mixed running system |
| RU2789762C1 (en) * | 2022-05-12 | 2023-02-09 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" | Vacuum deaeration assembly |
-
2014
- 2014-04-28 CN CN201420210220.2U patent/CN203906024U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986849A (en) * | 2015-02-13 | 2016-10-05 | 中国电力工程顾问集团华北电力设计院有限公司 | Rear-mounted steam turbine system and method for middle steam pumping and heating |
| CN105423398A (en) * | 2015-12-29 | 2016-03-23 | 华电郑州机械设计研究院有限公司 | Novel series heating network drainage system |
| CN105423398B (en) * | 2015-12-29 | 2018-04-06 | 华电郑州机械设计研究院有限公司 | One kind series connection heat supply network draining system |
| CN107218091A (en) * | 2017-06-14 | 2017-09-29 | 联合瑞升（北京）科技有限公司 | A kind of thermal power plant's cold end energy-conservation therrmodynamic system and operation method |
| CN107218091B (en) * | 2017-06-14 | 2018-08-07 | 联合瑞升（北京）科技有限公司 | A kind of energy saving therrmodynamic system of thermal power plant's cold end and operation method |
| CN108301884A (en) * | 2017-12-27 | 2018-07-20 | 东南大学 | A kind of pumping that adding steam jet ejector coagulates heating system and its adjusting method |
| CN107956520A (en) * | 2018-01-22 | 2018-04-24 | 程琛 | A kind of filling cooling system of zero output low pressure (LP) cylinder |
| CN108286728A (en) * | 2018-03-28 | 2018-07-17 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of power plant's step heating system |
| CN108798809A (en) * | 2018-08-08 | 2018-11-13 | 国电龙源电力技术工程有限责任公司 | The integrated heating system of small steam turbine coupled electricity-generation unit |
| CN109798692A (en) * | 2018-11-04 | 2019-05-24 | 大唐(北京)能源管理有限公司 | A kind of air-cooled and wet type cooling unit mixed running system |
| RU2789762C1 (en) * | 2022-05-12 | 2023-02-09 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" | Vacuum deaeration assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203906024U (en) | Heating device for utilizing dead steam of thermal power plant | |
| CN204730303U (en) | The heating system of the 12MW small cogeneration unit under a kind of underrun operating mode | |
| CN204301389U (en) | In conjunction with evaporative cooling and mechanically refrigerated power generating plant cooling tower water-saving system | |
| CN204693561U (en) | A kind of UTILIZATION OF VESIDUAL HEAT IN heating installation with peak regulating function | |
| CN108644862A (en) | Zero output depth of low pressure (LP) cylinder recycles the combining heating system of steam power plant's waste heat | |
| CN209054540U (en) | Nuclear energy heap comprehensive utilization system for heat energy | |
| CN103574805B (en) | Air-steam condensation system integrating evaporation cooling water chilling unit and evaporation-type condenser | |
| CN106382667A (en) | Heat-supply energy-saving system and method for power plant | |
| CN102589035B (en) | Energy-saving heat pump and co-generation coupled heating system and coupled heating method | |
| CN108286728A (en) | A kind of power plant's step heating system | |
| CN201884080U (en) | Steam exhaust waste heat recycling unit | |
| CN105387540A (en) | Absorption heat pump-water spray chamber united cooling system for textile mill | |
| CN204404317U (en) | Wet type cooling unit high back pressure series connection compression type heat heat pump heating system | |
| CN201306936Y (en) | Water charging system of condenser in electric power plant | |
| CN211119603U (en) | Water replenishing system for indirectly heating heat supply network by using low-temperature waste heat of flue gas | |
| CN108301995A (en) | A kind of power generator and method promoting geothermal energy grade using absorption heat pump | |
| CN104930619A (en) | Evaporative cooling-absorption heat pump combined air conditioning system for power plant | |
| CN202813540U (en) | Energy-saving heat pump and co-generation system coupled heat supply system | |
| CN208266148U (en) | A kind of steam regeneration device using Spirit vapour thermal energy | |
| CN104501624B (en) | Evaporative type cooler and surface-type condensing system united power plant cooling system | |
| CN206073747U (en) | A kind of sleeve pipe vaporation-type mixed-flow condenser | |
| CN203347853U (en) | Thermal power unit turbine condensate super-cooling and efficiency improving treatment device | |
| CN206377889U (en) | A kind of heat pump circulating system of utilization Driven by Solar Energy jet-stream whirl pipe | |
| CN206073125U (en) | A kind of Direct Air-Cooled tower waste heat circulation system | |
| CN205897300U (en) | Big difference in temperature heating system of distributing type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee after: POWERCHINA HEBEI ELECTRIC POWER ENGINEERING Co.,Ltd. Address before: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee before: HEBEI ELECTRIC POWER DESIGN & Research Institute |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
|
| CX01 | Expiry of patent term |