CN1959070A - Reclaiming system for exhaust steam - Google Patents
Reclaiming system for exhaust steam Download PDFInfo
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- CN1959070A CN1959070A CN 200610112561 CN200610112561A CN1959070A CN 1959070 A CN1959070 A CN 1959070A CN 200610112561 CN200610112561 CN 200610112561 CN 200610112561 A CN200610112561 A CN 200610112561A CN 1959070 A CN1959070 A CN 1959070A
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- supercharging
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Abstract
A recovery system of dead steam is prepared as setting steam intake pipe and steam exhaust pipe on the first closed recovery tank, setting pressurization conveying unit for pressurizing inlet steam on steam intake pipe of the first closed recovery tank, connecting steam intake pipe of pressurization conveying unit to dead steam pipe, 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 dead steam recovery system, the exhaust steam that can be used for various steaming plants is recycled, and particularly the exhaust steam of steam turbine is recycled.
Background technique
The exhaust steam of existing steam turbine is handled by cooling tower, the steam of steam turbine end (exhaust steam) pipe is direct-connected with vapour condenser, vapour condenser is a vapor-water heat exchanger, and natural cooling water enters and is sent to the air hot transmission of cooling water generation of whereabouts together of leaning on the heat loss through convection rising in the cooling tower after vapour condenser absorbs heat.Exhaust steam in the vapour condenser is then sharply shunk by about 1700: 1 ratios of volume, does not hold formation degree of vacuum at steam turbine, improves the front and back pressure reduction of steam turbine thus, improves generated energy.The defective of this technology is that the latent heat of vaporization of exhaust steam can not effectively be utilized, and causes a large amount of wastes of water resources and heat energy, and produces thermo-pollution.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides a kind of dead steam recovery system, adopt this system effectively to recycle to exhaust steam, reduce the waste of heat energy significantly, and avoid thermo-pollution.
The present invention realizes that the technological scheme of above-mentioned purpose is: a kind of dead steam recovery system, comprise 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 pipeline.
The front of the described first sealing recycling can be provided with vapor extraction device, the admission mouth of pipe of the admission supercharging feedway of the described first sealing recycling can connects with described exhaust steam pipeline by described vapor extraction device, its Placement is that the steam inlet pipe of described vapor extraction device connects with described exhaust steam pipeline, and exhaust steam pipe connects with the admission mouth of pipe of the described first sealing recycling can admission supercharging feedway.
The back of the described first sealing recycling can be 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.
Working principle of the present invention and beneficial effect are: by the mode of supercharging conveying, the sealing recycling can is sent in exhaust steam, under the hyperbaric environment in the sealing recycling can, become high-grade secondary vapour and water of condensation, the secondary vapour that forms can send into gas utilization unit and pipe network is used, and the water of condensation of formation can enter water circulation system, has realized the recycling of exhaust steam thus, avoided the waste of water resources and heat, avoided thermo-pollution atmosphere environment.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the another kind of embodiment's of the present invention a structural representation.
Embodiment
Referring to Fig. 1 and Fig. 2, the invention provides a kind of dead steam recovery system, comprise 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 exhaust steam pipeline 2.
The front of the described first sealing recycling can be provided with vapor extraction device 13, the admission mouth of pipe of the admission supercharging feedway of the described first sealing recycling can connects with described exhaust steam pipeline by described vapor extraction device, its Placement is that the steam inlet pipe of described vapor extraction device connects with described exhaust steam pipeline, and exhaust steam pipe connects with the admission mouth of pipe of the described first sealing recycling can admission supercharging feedway (referring to the supercharging feedway that is used for the admission supercharging that the described first sealing recycling can steam inlet pipe is provided with).
The back of the described first sealing recycling can 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 vapor extraction device is used to extract exhaust steam and delivers to the supercharging feedway of the first sealing recycling can, can adopt prior art and other possible technology of any suitable, for example, and the high pressure corrosive resistant fan.When being used for steam turbine, the pressure head of vapor extraction device should guarantee in the required degree of vacuum of the terminal formation of steam turbine.
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 connect described exhaust steam pipeline or vapor extraction device exhaust steam pipe (for the admission supercharging feedway of the first sealing recycling can) or connect the exhaust steam pipe (for the admission supercharging feedway of the second sealing recycling can) of the first sealing recycling can according to different Placements, 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 high temperature resistant centrifugal water pump of sealing recycling can to produce high pressure.
Described sealing recycling can bottom can be connected with water pump 11, the both described high temperature centrifugal pump of this water pump, in order to extract the water of condensation (or claiming the circulation water jets) 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 described high temperature centrifugal 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 high temperature centrifugal 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 the output of exhaust steam output and water of condensation, form total exhaust steam output pipeline 6 of native system and total water of condensation output pipeline 1, this exhaust steam output pipeline can connect gas utilization unit or steam supply pipe network, externally to provide the exhaust steam with grade, this water of condensation output pipeline can connect the water of condensation circulatory system.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 tube of water pump, also can be arranged on each output arm.
The quantity of described water pump can be 2-8, and it is one to be equipped with a usefulness that conventional way is one group 2, and its output tube is parallel on the common output pipeline (for example, shown in Figure 1 embodiment).
The quantity of described water pump and water pump also can adopt the mode of other any suitable with the Placement of each Venturi tube.For example, two water pumps can be set, its output tube connects the output pipeline (for example, shown in Figure 2 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 the electrically-controlled valve on described water pump control circuit and/or the water pump output pipeline according to pipeline configuration, reach upper control limits or in limited time following in liquid level, generate control signal, control high temperature centrifugal 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 high temperature centrifugal 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 exhaust steam grade of output to obtain corresponding exhaust steam pressure and temperature.Under normal conditions, two-stage sealing recycling can shown in Figure 2 can obtain useful exhaust steam temperature.
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 exhaust steam 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. dead steam recovery system, it is characterized in that comprising the first sealing recycling can, the described first sealing recycling can is provided with steam inlet pipe and exhaust steam pipe, and 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 pipeline.
2. dead steam recovery system as claimed in claim 1, the front that it is characterized in that the described first sealing recycling can is provided with vapor extraction device, the main equipment of vapor extraction device is a high pressure positive blower, the admission mouth of pipe of the admission supercharging feedway of the described first sealing recycling can connects with described exhaust steam pipeline by described vapor extraction device, its Placement is that the steam inlet pipe of described vapor extraction device connects with described exhaust steam pipeline, and exhaust steam pipe connects with the admission mouth of pipe of the described first sealing recycling can admission supercharging feedway.
3. dead steam recovery system as claimed in claim 1, the back that it is characterized in that the described first sealing recycling can 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.
4. dead steam recovery system as claimed in claim 1, the front that it is characterized in that the described first sealing recycling can is provided with vapor extraction device, the admission mouth of pipe of the admission supercharging feedway of the described first sealing recycling can connects with described exhaust steam pipeline by described vapor extraction device, its Placement is that the steam inlet pipe of described vapor extraction device connects with described exhaust steam pipeline, exhaust steam pipe connects with the admission mouth of pipe of the described first sealing recycling can admission supercharging feedway, the back of the described first sealing recycling can 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.
5. as claim 3 or 4 described dead steam recovery systems, it is characterized in that the described first sealing recycling can is provided with the high temperature centrifugal pump, the pipeline that is used for water of condensation output of described high temperature centrifugal pump is connected in the exhaust steam pipe of this sealing recycling can.
6. as claim 1,2,3 or 4 described dead steam recovery systems, it is characterized in that described each supercharging feedway is a 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, the convergent mouth of pipe is the high pressure water import, is used to connect high-pressure water pipe.
7. dead steam recovery system as claimed in claim 6, it is characterized in that described sealing recycling can bottom is connected with the high temperature centrifugal pump, described high-pressure water pipe adopts output pipeline or its arm of described high temperature centrifugal pump, and the output tube of described high temperature centrifugal pump also connects the water of condensation circulatory system or next stage recycling can.
8. dead steam recovery system as claimed in claim 7 is characterized in that the output tube of described high temperature centrifugal pump is provided with check valve.
9. dead steam recovery system as claimed in claim 8, it is characterized in that 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 described high temperature centrifugal pump and/or the control circuit of the electrically-controlled valve on the high temperature centrifugal pump output pipeline.
10. dead steam recovery system as claimed in claim 9, the quantity that it is characterized in that described high temperature resistant centrifugal pump is 2-8, its output tube is parallel on the common output pipeline, the output pipeline that perhaps connects admission supercharging device and water of condensation respectively, described high temperature resistant centrifugal pump is positioned at corresponding sealing recycling can below or side, is installed on the same base with described sealing recycling can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610112561 CN1959070A (en) | 2006-08-23 | 2006-08-23 | Reclaiming system for exhaust steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610112561 CN1959070A (en) | 2006-08-23 | 2006-08-23 | Reclaiming system for exhaust steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1959070A true CN1959070A (en) | 2007-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610112561 Pending CN1959070A (en) | 2006-08-23 | 2006-08-23 | Reclaiming system for exhaust steam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540996C (en) * | 2007-11-16 | 2009-09-16 | 冼泰来 | Vapour recovery warehouse |
| CN102538089A (en) * | 2012-01-19 | 2012-07-04 | 河南中烟工业有限责任公司 | Reuse method of exhausted steam of steam condensate water |
-
2006
- 2006-08-23 CN CN 200610112561 patent/CN1959070A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540996C (en) * | 2007-11-16 | 2009-09-16 | 冼泰来 | Vapour recovery warehouse |
| CN102538089A (en) * | 2012-01-19 | 2012-07-04 | 河南中烟工业有限责任公司 | Reuse method of exhausted steam of steam condensate water |
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