CN1959069A - System of reclaiming exhaust steam in steam turbine - Google Patents
System of reclaiming exhaust steam in steam turbine Download PDFInfo
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- CN1959069A CN1959069A CN 200610112560 CN200610112560A CN1959069A CN 1959069 A CN1959069 A CN 1959069A CN 200610112560 CN200610112560 CN 200610112560 CN 200610112560 A CN200610112560 A CN 200610112560A CN 1959069 A CN1959069 A CN 1959069A
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Abstract
A recovery system of dead steam from steam turbine is prepared as setting steam intake pipe and steam exhaust pipe on the first closed recovery tank and arranging pressurization conveying unit on said steam intake pipe, connecting steam intake pipe of pressurization conveying unit to dead steam pipe on steam turbine, setting steam sucking unit and the second recovery tank separately before or behind the first closed recovery tank in order to carry out multistage pressurization.
Description
Technical field
The present invention relates to a kind of system of reclaiming exhaust steam in steam turbine, mainly can be used for the occasion that thermoelectricity plant and thermal power plant etc. are provided with steam turbine.
Background technique
For generating to greatest extent, the not end of existing steam turbine is provided with vapour condenser and various forms of cooling tower, double-curve cooling column particularly, cool off with the exhaust steam that steam turbine is not held, make it become water of condensation, to reduce volume significantly, do not hold the formation negative pressure at steam turbine, to increase substantially steam turbine front and back pressure reduction.Its cooling procedure is cooling water to be squeezed into the top of delivering to cooling tower in the vapour condenser after the heat exchange with recycle pump, the latent heat of vaporization of the exhaust steam of the steam turbine end water that is cooled absorbs, the heat energy that cooling water absorbs takes place to transmit and take away with the air that rises in cooling water in dropping process, the steam of steam turbine end (exhaust steam) becomes water, volume sharply shrinks with 1700: 1 ratios, does not hold formation degree of vacuum at steam turbine.The defective of the technology of this raising steam turbine pressure reduction is that exhaust steam in steam turbine latent heat can not obtain utilizing, and has wasted a large amount of heat energy.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides a kind of system of reclaiming exhaust steam in steam turbine, this system is when guaranteeing steam turbine pressure reduction, for whole effectively utilization of exhaust steam provides possible.
The present invention realizes that the technological scheme of above-mentioned purpose is: a kind of system of reclaiming exhaust steam in steam turbine, comprise steam turbine and vapor extraction device, and the steam inlet pipe of described vapor extraction device connects the exhaust steam outlet of described steam turbine.
The invention has the beneficial effects as follows: because the present invention has connected vapor extraction device in the exhaust steam outlet of steam turbine, realized the degree of vacuum of steam turbine end by vapor extraction device, guaranteed the front and back pressure reduction of steam turbine, guaranteed also that simultaneously the heat energy in the exhaust steam do not suffer a loss, so that carry out the utilization of postorder.In addition, also do not need cooling water, further saved cooling water resources.
Description of drawings
Fig. 1 is a basic structure schematic representation of the present invention;
Fig. 2 is the structural representation of a kind of exhaust steam recycle device of the present invention;
Fig. 3 is the general structure schematic representation of one embodiment of the present of invention.
Embodiment
Referring to Fig. 1 and Fig. 3, the invention provides a kind of system of reclaiming exhaust steam in steam turbine, it comprises steam turbine 1 and vapor extraction device 13, the steam inlet pipe 14 of described vapor extraction device connects the exhaust steam outlet of described steam turbine.
Described vapor extraction device can adopt prior art and other possible technology of any suitable, so that extract the exhaust steam of steam turbine end and form degree of vacuum at the steam turbine end, wherein degree of vacuum is big more, and the electric weight that generates by generator is big more.For example, high pressure corrosive resistant fan.
Described vapor extraction device back can be provided with the exhaust steam recycle device, realizing the recovery and the utilization of exhaust steam, exhaust steam is converted into secondary vapour and water of condensation than high-grade, sends into respectively with the steam pipe net or the water of condensation circulatory system to be used.
Referring to Fig. 2 and Fig. 3, described exhaust steam recycle device can be provided with the first sealing recycling can 4, the described first sealing recycling can is provided with steam inlet pipe and exhaust steam pipe, its steam inlet pipe is provided with the supercharging feedway 3 that is used for the admission supercharging, and the admission mouth of pipe of this supercharging feedway connects the exhaust steam pipe 2 of described vapor extraction device.
The back of the described first sealing recycling can also be provided with second recycling can 7, the described first sealing recycling can is provided with steam inlet pipe and exhaust steam pipe, its steam inlet pipe is provided with the supercharging feedway 5 that is used for the admission supercharging, and the admission mouth of pipe of this supercharging feedway connects the exhaust steam pipe of the described first sealing recycling can.
Described each supercharging feedway can adopt the flowing medium supercharging device of any suitable, for example, and the high pressure corrosive resistant fan.
Described each supercharging feedway is Venturi tube preferably, the trunnion mouth of pipe of described Venturi tube is the admission mouth of pipe of this supercharging feedway, be used to according to actual needs connect described vapor extraction device exhaust steam pipe (for first the sealing recycling can admission supercharging feedway) or connect described first the sealing recycling can exhaust steam pipe (for second the sealing recycling can admission supercharging feedway), the flaring mouth of pipe is the steam discharge mouth of pipe of this feedway, be used to connect the steam inlet pipe of this sealing recycling can, the convergent mouth of pipe is the high pressure water import, be used to connect high-pressure water pipe, to form jet, bring the exhaust steam that is connected in the trunnion mouth of pipe into Venturi tube, the carbonated drink mixed medium stream of formation flows out from the flaring mouth of pipe.The pressure height that this supercharging feedway produces, simple in structure, cost of production and operating cost are low, and can utilize water of condensation as high-pressure water, utilize the water pump of sealing recycling can to produce high pressure.
Described sealing recycling can bottom can be connected with water pump 11, in order to extract the water of condensation in the described sealing recycling can, described high-pressure water pipe is output pipeline or its arm 12,9 of described water pump, the high pressure water of condensation of water pump being up to by described output pipeline or its arm is sent into the mouth of pipe that reduces of Venturi tube, to form jet.Described water pump can also be simultaneously as the draining pump of water of condensation, and its output tube connects the water of condensation circulatory system or next stage recycling can.When the output tube of water pump connects different pipeline (when for example connecting the pipeline of the Venturi tube and the water of condensation circulatory system simultaneously), can adopt prior art, on total output tube of water pump, some arms are set, connect each pipeline that needs connection respectively, on arm, can be provided with corresponding valve, so that carry out the control of the way of output.
When being provided with the second sealing recycling can, the pipeline 10 that the water pump of the described first sealing recycling can is used for water of condensation output can be connected in the exhaust steam pipe of this sealing recycling can, water of condensation and exhaust steam are together entered the next stage recycling can, carry out carbonated drink separation at described second level sealing recycling can then.
The pipeline that is used for water of condensation output of the water pump of afterbody sealing recycling can generally should be separate with the exhaust steam pipe of this sealing recycling can, be respectively applied for steam output and water of condensation output, form total exhaust steam output pipeline 6 of native system and total water of condensation output pipeline 15, this exhaust steam output pipeline can connect gas utilization unit or steam supply pipe network, so that the steam than high-grade externally to be provided, this water of condensation output pipeline can connect the oxygen-eliminating device 16 of boiler, constitute the part of the water of condensation circulatory system, the water pump 17 that water of condensation in the oxygen-eliminating device is positioned at its underpart extracts and sends into boiler 18, send into the work of steam turbine pushing turbine after in boiler, transferring steam to, formed the recycling of water of condensation thus, for simplifying general structure, the preferred low level oxygen-eliminating device of described oxygen-eliminating device.When only establishing the first sealing recycling can, this first sealing recycling can constitutes described afterbody sealing recycling can, when being provided with the first sealing recycling can and the second sealing recycling can, this second sealing recycling can constitutes described afterbody sealing recycling can, and the rest may be inferred.
Can be provided with check valve on the output tube of described water pump, to prevent occurring backflow when water pump quits work, described check valve can be arranged on total output arm of water pump.
The quantity of described water pump can be 2-8, and it is one to be equipped with a usefulness that conventional way is every group, and its output tube is parallel on the common output pipeline (for example, shown in Figure 2 embodiment).
The quantity of described water pump and pump also can adopt the mode of other any suitable with the Placement of each Venturi tube.For example, two pumps can be set, its output tube connects the output pipeline (for example, shown in Figure 3 embodiment) of admission supercharging device and water of condensation respectively.
Described sealing recycling can be provided with liquid level sensor, be used to detect and control the interior water of condensation liquid level of sealing recycling can, its output line can be connected in the control circuit of described pump and/or the control circuit of the electrically-controlled valve on the pump main road according to pipeline configuration, reach upper control limits or in limited time following in liquid level, generate control signal, control pump and/or electrically-controlled valve are opened or are closed.For example, when liquid level reaches upper control limits in the sealing recycling can, open pump and/or electrically-controlled valve,, reduce a jar interior liquid level, when liquid level is reduced to lower control limit, close pump and/or electrically-controlled valve, stop the discharging of water of condensation so that water of condensation is entered.This automatic control can realize sealing the liquid level control in the recycling can effectively, avoids the liquid level of sealing in the recycling can too high or too low.Described liquid level sensor can adopt prior art to the control technique of pump and electrically-controlled valve.
Described water pump can be positioned at corresponding sealing recycling can below or side, is installed on the same base 8 with described sealing recycling can.
According to actual needs, the sealing recycling can quantity of system can be set arbitrarily, carry out multistage supercharging,, improve the steam grade of output to obtain corresponding vapor pressure and temperature.Under normal conditions, two-stage sealing recycling can shown in Figure 2 can obtain useful steam, satisfies the needs of common gas utilization unit.
The relative tertiary location of the layout of beam line in the native system and each device can be provided with arbitrarily according to actual needs, the what is called of each equipment that relates to " front " and " back " are according to the vapor transmission direction, be not used in the spatial position that limits relevant device, on the pipeline modulating valve, stop valve and check valve can be set according to actual needs, so that regulate and control.Various control modes can adopt prior art.For example for wherein blower fan and pump, can adopt mode such as VFC to control, to regulate and control media flow and pressure and other parameters, its control mode and control circuit can adopt prior art.
Claims (10)
1. a system of reclaiming exhaust steam in steam turbine is characterized in that comprising steam turbine and vapor extraction device, and the steam inlet pipe of described vapor extraction device connects the exhaust steam outlet of described steam turbine.
2. system of reclaiming exhaust steam in steam turbine as claimed in claim 1 is characterized in that described vapor extraction device adopts the high pressure corrosive resistant fan.
3. system of reclaiming exhaust steam in steam turbine as claimed in claim 1 is characterized in that described vapor extraction device back is provided with the exhaust steam recycle device.
4. system of reclaiming exhaust steam in steam turbine as claimed in claim 2, it is characterized in that described exhaust steam recycle device is provided with the first sealing recycling can, the described first sealing recycling can is provided with steam inlet pipe and exhaust steam pipe, its steam inlet pipe is provided with the supercharging feedway that is used for the admission supercharging, and the admission mouth of pipe of this supercharging feedway connects the exhaust steam pipe of described vapor extraction device.
5. system of reclaiming exhaust steam in steam turbine as claimed in claim 3, the back that it is characterized in that the described first sealing recycling can also is provided with second recycling can, the described first sealing recycling can is provided with steam inlet pipe and exhaust steam pipe, its steam inlet pipe is provided with the supercharging feedway that is used for the admission supercharging, and the admission mouth of pipe of this supercharging feedway connects the exhaust steam pipe of the described first sealing recycling can.
6. system of reclaiming exhaust steam in steam turbine as claimed in claim 5 is characterized in that the pipeline that is used for circulating water or water of condensation output of the water pump of the described first sealing recycling can is connected in the exhaust steam pipe of this sealing recycling can.
7. as claim 4,5 or 6 described system of reclaiming exhaust steam in steam turbine, it is characterized in that described each supercharging feedway adopts Venturi tube, the trunnion mouth of pipe of described Venturi tube is the admission mouth of pipe of this supercharging feedway, the flaring mouth of pipe is the steam discharge mouth of pipe of this feedway, and the convergent mouth of pipe is for connecting the high pressure water import of high-pressure water pipe.
8. system of reclaiming exhaust steam in steam turbine as claimed in claim 7, it is characterized in that described sealing recycling can bottom is connected with water pump, described high-pressure water pipe is output pipeline or its arm of described water pump, and the output tube of described water pump also connects the water of condensation circulatory system or next stage recycling can.
9. system of reclaiming exhaust steam in steam turbine as claimed in claim 8, the total exhaust steam output pipeline that it is characterized in that described exhaust steam recycling system connects gas utilization unit or steam supply pipe network, total water of condensation output pipeline connects the oxygen-eliminating device of boiler, and the bottom of described oxygen-eliminating device is provided with the water of condensation that is used for oxygen-eliminating device and extracts and send into boiler feed pump.
10. system of reclaiming exhaust steam in steam turbine as claimed in claim 9, the quantity that it is characterized in that described water pump is 2-8, the output tube of each water pump is provided with check valve, each output tube is parallel on the common output pipeline, the output pipeline that perhaps connects admission supercharging device and water of condensation respectively, described water pump is positioned at corresponding sealing recycling can below or side, be installed on the same base with described sealing recycling can, described sealing recycling can is provided with liquid level sensor, be used to detect and control the interior water of condensation liquid level of sealing recycling can, its output line is connected in the control circuit of the electrically-controlled valve on described water pump control circuit and/or the water pump output pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101125601A CN100381678C (en) | 2006-08-23 | 2006-08-23 | System of reclaiming exhaust steam in steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101125601A CN100381678C (en) | 2006-08-23 | 2006-08-23 | System of reclaiming exhaust steam in steam turbine |
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| CN1959069A true CN1959069A (en) | 2007-05-09 |
| CN100381678C CN100381678C (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101125601A Expired - Fee Related CN100381678C (en) | 2006-08-23 | 2006-08-23 | System of reclaiming exhaust steam in steam turbine |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852105A (en) * | 2010-05-25 | 2010-10-06 | 山西省电力勘测设计院 | Steam exhaust direct-discharge system of feed pump turbine of direct air-cooling unit |
| WO2012122762A1 (en) * | 2011-03-16 | 2012-09-20 | Li Shusheng | Turbine vacuum steam heating and pressurizing reuse system |
| CN101644177B (en) * | 2009-05-31 | 2012-10-10 | 北京凝汽动力技术有限公司 | Dead steam reuse system |
| CN104018900A (en) * | 2014-06-09 | 2014-09-03 | 匡仲平 | Thermoelectric unit water and energy saving device |
| CN104457052A (en) * | 2013-09-17 | 2015-03-25 | 上海振世能源科技有限公司 | Flash steam pressurizer |
| CN105649695A (en) * | 2014-12-03 | 2016-06-08 | 天纳克（苏州）排放系统有限公司 | Rankine cycle system and control method thereof |
| CN113188181A (en) * | 2021-03-29 | 2021-07-30 | 大唐七台河发电有限责任公司 | Heating drainage recovery device |
| CN113808765A (en) * | 2021-09-07 | 2021-12-17 | 长江勘测规划设计研究有限责任公司 | Dead steam air cooling system of steam turbine of underground nuclear power station and using method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3703809A (en) * | 1970-12-03 | 1972-11-28 | James L Cassidy | Pressure process for condensing power house steam |
| CN1034246A (en) * | 1988-12-13 | 1989-07-26 | 张吉林 | Low backpressure regenerating condensed steam type turbine equipment |
| CN1375622A (en) * | 2001-12-10 | 2002-10-23 | 李树生 | Exhaust steam recoverer and its corollary system |
| CN1553047A (en) * | 2003-06-05 | 2004-12-08 | 李树生 | Dead steam recovering apparatus of steam turbine |
-
2006
- 2006-08-23 CN CNB2006101125601A patent/CN100381678C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644177B (en) * | 2009-05-31 | 2012-10-10 | 北京凝汽动力技术有限公司 | Dead steam reuse system |
| CN101852105A (en) * | 2010-05-25 | 2010-10-06 | 山西省电力勘测设计院 | Steam exhaust direct-discharge system of feed pump turbine of direct air-cooling unit |
| WO2012122762A1 (en) * | 2011-03-16 | 2012-09-20 | Li Shusheng | Turbine vacuum steam heating and pressurizing reuse system |
| CN104457052A (en) * | 2013-09-17 | 2015-03-25 | 上海振世能源科技有限公司 | Flash steam pressurizer |
| CN104018900A (en) * | 2014-06-09 | 2014-09-03 | 匡仲平 | Thermoelectric unit water and energy saving device |
| CN105649695A (en) * | 2014-12-03 | 2016-06-08 | 天纳克（苏州）排放系统有限公司 | Rankine cycle system and control method thereof |
| CN105649695B (en) * | 2014-12-03 | 2018-05-15 | 天纳克（苏州）排放系统有限公司 | Rankine cycle system and its control method |
| CN113188181A (en) * | 2021-03-29 | 2021-07-30 | 大唐七台河发电有限责任公司 | Heating drainage recovery device |
| CN113808765A (en) * | 2021-09-07 | 2021-12-17 | 长江勘测规划设计研究有限责任公司 | Dead steam air cooling system of steam turbine of underground nuclear power station and using method thereof |
| CN113808765B (en) * | 2021-09-07 | 2024-03-22 | 长江勘测规划设计研究有限责任公司 | Steam exhaust air cooling system of steam turbine of underground nuclear power station and application method of steam exhaust air cooling system |
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| Publication number | Publication date |
|---|---|
| CN100381678C (en) | 2008-04-16 |
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