CN202946201U - System for reducing unit backpressure applied to thermal power plant - Google Patents
System for reducing unit backpressure applied to thermal power plant Download PDFInfo
- Publication number
- CN202946201U CN202946201U CN2012206616954U CN201220661695U CN202946201U CN 202946201 U CN202946201 U CN 202946201U CN 2012206616954 U CN2012206616954 U CN 2012206616954U CN 201220661695 U CN201220661695 U CN 201220661695U CN 202946201 U CN202946201 U CN 202946201U
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- CN
- China
- Prior art keywords
- unit
- lithium bromide
- vacuum pump
- water
- steam
- 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
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 11
- IPLONMMJNGTUAI-UHFFFAOYSA-M lithium;bromide;hydrate Chemical group [Li+].O.[Br-] IPLONMMJNGTUAI-UHFFFAOYSA-M 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a system for reducing unit backpressure applied to a thermal power plant. The system comprises a lithium bromide refrigerating unit, a mechanical water ring vacuum pump unit and steam turbine condensing equipment, wherein a feed water inlet of the lithium bromide refrigerating unit is connected with a water inlet of the mechanical water ring vacuum pump unit; a water outlet of the mechanical water ring vacuum pump unit is connected with a water return port of the lithium bromide refrigerating unit; and an air inlet of the mechanical water ring vacuum pump unit is connected with an air outlet of the steam turbine condensing equipment. The system has the advantages that the lithium bromide refrigerating unit provides low-temperature water sources for the mechanical water ring vacuum pump unit; the pumping capacity of the mechanical water ring vacuum pump unit is improved; more noncondensing gas of a steam turbine condenser is pumped out; the unit backpressure is reduced; the power generating efficiency is improved; and the power generating coal consumption of the units is reduced.
Description
Technical field
The utility model relates to a kind of system that reduces the unit back pressure, particularly relates to a kind of system that the thermal power plant reduces the unit back pressure that is applied to.
Background technique
The pumped vacuum systems of Steam Turbine in Fire Power Plant condenser, vapour condenser or steam exhaust device all adopts mechanical type water ring vaccum pump or water jet air ejector at present.Circulating water temperature and the exhaust capacity of vacuum pump are closely bound up, reduction along with water temperature, the exhaust capacity of vacuum pump progressively improves, and most of open type or the closed-type circulating cooling water of adopting of existing fired power generating unit, temperature drift, cause the vacuum pump suction capactity to descend, therefore, ubiquity that turbine back pressure is high, the low phenomenon that affects generating efficiency of vacuum.Provide LP Turbine Exhaust Pressure Correction Curves to find out according to steam turbine, condenser vacuum reduces 1kPa, and steam turbine power generation efficient can improve 1～2%, more than being equivalent to the every kWh reduction of gross coal consumption rate 0.6 gram.Although it is many-sided affecting the factor of condenser vacuum, but generally demarcate temperature higher than the design of vacuum pump because of the entering water temp of power station vacuum pump, have a strong impact on the exhaust capacity of vacuum pump, directly affect the vacuum of vapour condenser, and cause to a certain extent the vacuum pump cavitation erosion, shorten service life of vacuum pump; In the tracheae of finding time between simultaneously from the vapour condenser to the vacuum pump, the vapor partial pressure height is also a key factor that affects condenser vacuum.
According to investigations, a lot of power plant enter open type or closed-type circulating cooling water system by replenishing low temperature water, to reduce water temperature, improve vacuum pump efficient, but this means can not be dealt with problems thoroughly.
The model utility content
The purpose of this utility model is to provide a kind of system that the thermal power plant reduces the unit back pressure that is applied to.
The purpose of this utility model is implemented by following technological scheme, a kind of system that is applied to thermal power plant reduction unit back pressure, it comprises lithium bromide refrigerating unit, mechanical type Water-ring vacuum pump assembly and steam turbine condensing plant, the water-supplying mouth of described lithium bromide refrigerating unit is connected with the water intake of described mechanical type Water-ring vacuum pump assembly, the water outlet of described mechanical type Water-ring vacuum pump assembly is connected with the backwater mouth of described lithium bromide refrigerating unit, and the suction port of described mechanical type Water-ring vacuum pump assembly is connected with the air outlet of described steam turbine condensing plant.
Described lithium bromide refrigerating unit is any one in steam type lithium bromide unit, hot water lithium bromide unit, flue gas type lithium bromide unit, single-effect type lithium bromide unit or dual effect type lithium bromide unit.
Described steam turbine condensing plant is any one in steam turbine condenser, high pressure vapour condenser, low pressure vapour condenser or steam exhaust device.
Described lithium bromide refrigerating unit is described steam type lithium bromide unit, and the steam inlet of described steam type lithium bromide unit is connected with the steam (vapor) outlet of extracted steam from turbine system.
Described lithium bromide refrigerating unit is described hot water lithium bromide unit, and the hot water inlet of described hot water lithium bromide unit is connected with the hydrophobic outlet of low-pressure heater or is connected with the hydrophobic outlet of platoon development unit.
Described lithium bromide refrigerating unit is described flue gas type lithium bromide unit, and the smoke inlet of described flue gas type lithium bromide unit is connected with the low-temperature smoke extraction mouth of boiler tail.
The utility model has the advantage of, the utility model provides low-temperature water source by the lithium bromide refrigerating unit for mechanical type Water-ring vacuum pump assembly, improve the suction capactity of mechanical type Water-ring vacuum pump assembly, extract the more incondensable gases of steam turbine condenser out, reduce the unit back pressure, improve generating efficiency, reduce the unit generation coal consumption; The utility model has mainly adopted the lithium bromide unit of various ways, takes full advantage of the waste heat of thermal power generation unit, comprising increasing extracted steam from turbine amount, heater condensate, boiler tail smoke evacuation etc., has improved unit heat economy; The utility model has reduced the entering water temp of mechanical type Water-ring vacuum pump assembly, avoids the cavitation erosion of mechanical type Water-ring vacuum pump assembly, extends its working life.
Description of drawings
Fig. 1 is that 1 one kinds of embodiments are applied to the system schematic that the thermal power plant reduces the unit back pressure.
Fig. 2 is that 2 one kinds of embodiments are applied to the system schematic that the thermal power plant reduces the unit back pressure.
Fig. 3 is that 3 one kinds of embodiments are applied to the system schematic that the thermal power plant reduces the unit back pressure.
Steam type lithium bromide unit 1, mechanical type Water-ring vacuum pump assembly 2, steam turbine condenser 3, extracted steam from turbine system 4, hot water lithium bromide unit 5, low-pressure heater 6, flue gas type lithium bromide unit 7, steam exhaust device 8, boiler 9.
Embodiment:
embodiment 1: a kind of system that is applied to thermal power plant reduction unit back pressure, it comprises steam type lithium bromide unit 1, mechanical type Water-ring vacuum pump assembly 2, steam turbine condenser 3 and extracted steam from turbine system 4, the water-supplying mouth of steam type lithium bromide unit 1 is connected with the water intake of mechanical type Water-ring vacuum pump assembly 2, the water outlet of mechanical type Water-ring vacuum pump assembly 2 is connected with the backwater mouth of steam type lithium bromide unit 1, the suction port of mechanical type Water-ring vacuum pump assembly 2 is connected with the air outlet of steam turbine condenser 3, the steam inlet of steam type lithium bromide unit 1 is connected with the steam (vapor) outlet of extracted steam from turbine system 4.
embodiment 2: a kind of system that is applied to thermal power plant reduction unit back pressure, it comprises hot water lithium bromide unit 5, mechanical type Water-ring vacuum pump assembly 2, steam turbine condenser 3 and low-pressure heater 6, the water-supplying mouth of hot water lithium bromide unit 5 is connected with the water intake of mechanical type Water-ring vacuum pump assembly 2, the water outlet of mechanical type Water-ring vacuum pump assembly 2 is connected with the backwater mouth of hot water lithium bromide unit 5, the suction port of mechanical type Water-ring vacuum pump assembly 2 is connected with the air outlet of steam turbine condenser 3, the hot water inlet of hot water lithium bromide unit 5 is connected with the hydrophobic outlet of low-pressure heater 6.
Embodiment 3: a kind of system that is applied to thermal power plant reduction unit back pressure, it comprises flue gas type lithium bromide unit 7, mechanical type Water-ring vacuum pump assembly 2, steam exhaust device 8 and boiler 9, the water-supplying mouth of flue gas type lithium bromide unit 7 is connected with the water intake of mechanical type Water-ring vacuum pump assembly 2, the water outlet of mechanical type Water-ring vacuum pump assembly 2 is connected with the backwater mouth of flue gas type lithium bromide unit 7, the suction port of mechanical type Water-ring vacuum pump assembly 2 is connected with the air outlet of steam exhaust device 8, and the smoke inlet of flue gas type lithium bromide unit 7 is connected with the low-temperature smoke extraction mouth of boiler 9 afterbodys.
Claims (6)
1. one kind is applied to the system that the thermal power plant reduces the unit back pressure, it is characterized in that, it comprises lithium bromide refrigerating unit, mechanical type Water-ring vacuum pump assembly and steam turbine condensing plant, the water-supplying mouth of described lithium bromide refrigerating unit is connected with the water intake of described mechanical type Water-ring vacuum pump assembly, the water outlet of described mechanical type Water-ring vacuum pump assembly is connected with the backwater mouth of described lithium bromide refrigerating unit, and the suction port of described mechanical type Water-ring vacuum pump assembly is connected with the air outlet of described steam turbine condensing plant.
2. a kind of system that the thermal power plant reduces the unit back pressure that is applied to according to claim 1, it is characterized in that, described lithium bromide refrigerating unit is any one in steam type lithium bromide unit, hot water lithium bromide unit, flue gas type lithium bromide unit, single-effect type lithium bromide unit or dual effect type lithium bromide unit.
3. a kind of system that the thermal power plant reduces the unit back pressure that is applied to according to claim 1, is characterized in that, described steam turbine condensing plant is any one in steam turbine condenser, high pressure vapour condenser, low pressure vapour condenser or steam exhaust device.
4. a kind of system that the thermal power plant reduces the unit back pressure that is applied to according to claim 2, it is characterized in that, described lithium bromide refrigerating unit is described steam type lithium bromide unit, and the steam inlet of described steam type lithium bromide unit is connected with the steam (vapor) outlet of extracted steam from turbine system.
5. a kind of system that the thermal power plant reduces the unit back pressure that is applied to according to claim 2, it is characterized in that, described lithium bromide refrigerating unit is described hot water lithium bromide unit, and the hot water inlet of described hot water lithium bromide unit is connected with the hydrophobic outlet of low-pressure heater or is connected with the hydrophobic outlet of platoon development unit.
6. a kind of system that the thermal power plant reduces the unit back pressure that is applied to according to claim 2, it is characterized in that, described lithium bromide refrigerating unit is described flue gas type lithium bromide unit, and the smoke inlet of described flue gas type lithium bromide unit is connected with the low-temperature smoke extraction mouth of boiler tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206616954U CN202946201U (en) | 2012-12-05 | 2012-12-05 | System for reducing unit backpressure applied to thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206616954U CN202946201U (en) | 2012-12-05 | 2012-12-05 | System for reducing unit backpressure applied to thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946201U true CN202946201U (en) | 2013-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206616954U Expired - Fee Related CN202946201U (en) | 2012-12-05 | 2012-12-05 | System for reducing unit backpressure applied to thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946201U (en) |
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2012
- 2012-12-05 CN CN2012206616954U patent/CN202946201U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: INNER MONGOLIA ELECTRIC POWER SURVEY DESIGN INSTIT Free format text: FORMER NAME: INNER MONGOLIA ELECTRICAL POWER INVESTIGATE AND DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 010010 Hohhot, the Inner Mongolia Autonomous Region Tin Road, No. 209 Patentee after: INNER MONGOLIA ELECTRIC POWER SURVEY & DESIGN INSTITUTE CO., LTD. Address before: 010010 Hohhot, the Inner Mongolia Autonomous Region Tin Road, No. 209 Patentee before: Inner Mongolia Electric Power Survey Design Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20201205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |