CN201652319U - Drainage connection system for steam turbine regenerative system - Google Patents
Drainage connection system for steam turbine regenerative system Download PDFInfo
- Publication number
- CN201652319U CN201652319U CN201020171121XU CN201020171121U CN201652319U CN 201652319 U CN201652319 U CN 201652319U CN 201020171121X U CN201020171121X U CN 201020171121XU CN 201020171121 U CN201020171121 U CN 201020171121U CN 201652319 U CN201652319 U CN 201652319U
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- Prior art keywords
- heater
- drainage
- pump
- steam turbine
- steam
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- Expired - Lifetime
Links
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 19
- 230000002209 hydrophobic effect Effects 0.000 claims description 30
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- KEUKAQNPUBYCIC-UHFFFAOYSA-N ethaneperoxoic acid;hydrogen peroxide Chemical compound OO.CC(=O)OO KEUKAQNPUBYCIC-UHFFFAOYSA-N 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a steam turbine regenerative system and particularly relates to a drainage connection system for the steam turbine regenerative system. The drainage connection system for the steam turbine regenerative system comprises a condenser, a condensate pump, a boiler and a regenerative heater and is characterized in that the rear part of the regenerative heater is provided with an injection-type water mixer; the rear part of a final high-pressure heater is provided with a steam jet pump; and the steam jet pump is connected with a main water supply pipeline. The utility model makes connection of a drainage system reach effects of a mixed heater, but does not use a booster pump, simplifies the structure and greatly reduces heating temperature difference of hot and cold mediums. The thermal economy of the drainage connection system is higher than a drainage pump system, while the equipment investment thereof is less than the drainage pump system. Compared with a system with a drainage cooler, the drainage connection system abandons the drainage cooler and simplifies the structure of the heater.
Description
Technical field
The utility model relates to a kind of Steam Turbine Regenerative System, particularly relates to the hydrophobic attachment system of a kind of Steam Turbine Regenerative System.
Background technology
Modern Thermal Power Station generally uses heat regenerative system in order to improve the heat energy utilization rate in Steam Power Circulation, feed water to reduce cold source energy with the extracted steam from turbine heating boiler.Back heating system is made up of a plurality of heaters.Heating steam hydrophobic has different mode of connection between a plurality of heaters, the different efficient of mode of connection are also inequality.Mode commonly used at present has hydrophobic the backflow step by step and the drainage pump dual mode.The hydrophobic backflow step by step is hydrophobic mobile to the low heater of pressure from the high heater of pressure, emits hydrophobic heat at low-pressure heater, so just reduces drawing gas of low-pressure heater, increased the cold source energy of steam turbine, reduced cycle efficieny.The drainage pump mode of connection is a heater of getting to elevated pressures with hydrophobic, and efficient is improved, but each level will add a booster, has increased the complexity of system.Also increased power consumption, dual mode is all undesirable, and using more at present is the pressure heater and drainage pump that refluxes step by step.In order to reduce the hydrophobic thermal discharge that refluxes step by step, in bleeder heater, install drain cooler additional.
These all systems all also do not reach thermodynamic (al) optimum boundary, also have further improved necessity.The boundary of thermodynamics optimum is to utilize contact(-type) heater to replace surface heater, and the heating temperature difference that makes cold and hot medium is zero.Contact(-type) heater is adorned booster after also needing every grade, has also increased the complexity of system.
The utility model content
The utility model is exactly in order to solve the problems of the technologies described above, and provides a kind of Steam Turbine Regenerative System hydrophobic attachment system, and purpose is in order to reduce the heating temperature difference of cold and hot medium, simplied system structure.
In order to achieve the above object, the utility model is achieved by the following technical solution:
The hydrophobic attachment system of a kind of Steam Turbine Regenerative System, it comprises condenser, condensate pump, boiler and bleeder heater, the injecting type water-water jet is set behind bleeder heater, behind the final stage high-pressure heater steam jet pump is set, steam jet pump is connected with main feed line.
On the described condensate pump variable-frequency power sources is installed.
Described injecting type water-water jet is installed in 1.2-2.5m place, bleeder heater delivery port below.
Advantage of the present utility model and effect are as follows:
The utility model makes the binding of draining system reach the effect of contact(-type) heater, but without booster, simplifies the structure, and greatly reduces the heating temperature difference of cold and hot medium.Heat-economy of the present utility model is higher than the drainage pump system, but equipment investment is lower than the drainage pump system.Remove drain cooler than the system that has drain cooler, simplified the structure of heater.
Description of drawings
Fig. 1 is the structural representation of the existing hydrophobic attachment system of Steam Turbine Regenerative System.
Fig. 2 is the structural representation of the hydrophobic attachment system of the utility model Steam Turbine Regenerative System.
Among the figure, 1, condenser, 2, condensate pump, 3, boiler, 4, bleeder heater, 5, the injecting type water-water jet, 6, steam jet pump, 7, oxygen-eliminating device, 8, feed pump.
The specific embodiment
Face is described in further details the utility model in conjunction with the accompanying drawings, but protection domain of the present utility model is not limit by embodiment.
As shown in Figure 1, the hydrophobic attachment system of a kind of Steam Turbine Regenerative System of the utility model, its structure is as follows: it comprises condenser 1, condensate pump 2, boiler 3, bleeder heater 4, oxygen-eliminating device 7 and feed pump 8, injecting type water-water jet 5 is set behind bleeder heater 4, steam jet pump 6 is set behind the final stage high-pressure heater, and steam jet pump 6 is connected with main feed line.
The hydrophobic linking method of a kind of Steam Turbine Regenerative System of the utility model, in order further to improve the efficient of draining system, an injecting type water-water jet is set behind each bleeder heater, utilize ejector mixing with hydrophobic supercharging step by step, the hydrophobic oxygen-eliminating device of sending into low-pressure heater, high-pressure heater is hydrophobic to boost step by step with the injecting type water-water jet, sends into main feed line with steam jet pump behind the final stage high-pressure heater.
Innovative point of the present utility model is as follows:
The utility model is installed an injecting type water-water jet 5 in each bleeder heater 4 back.The hydrophobic next stage heater (heater that pressure is higher) of sending into that is used as power in the injection heater with condensate water is heated in the next stage heater.Hydrophobic being heated is directly to heat with vapor mixing in the next stage heater, and hydrophobic temperature can improve, and can raise than temperature in the main condensate pipeline with that part of condensate water that is used as power, so heat-economy increases than drainage pump mode.
The stability of injecting type heater work is relatively responsive to operating mode, can steady operation when the steam turbine working conditions change in order to guarantee it, and tackle its operating mode and control.When the steam turbine working conditions change, the outlet pressure of condensate pump changes, and another is that the hydrophobic amount of bleeder heater also changes, and bleeder heater all is equipped with water-level control apparatus at present, and the variation of hydrophobic amount is realized by water-level control apparatus.The hydrophobic amount of each bleeder heater is controlled with water level, and the pressure of condensate pump and feed pump is controlled with rotating speed.
Should control as the condensing capacity of power and to remain unchanged, constant in order to keep condensing capacity, should keep the condensate pump outlet pressure constant, condensate pump can be adorned variable-frequency power sources, realize frequency control, keep exit of pump pressure constant.In order to make the injecting type water-water jet that cavitation not take place, the injecting type water-water jet can be installed in 1.2-2.5m place, below, the bleeder heater outlet mouth of a river, be installed in the 1.5m place when best.Make injecting type water admixing device water sucking mouth keep certain net positive suction head.
Available whole masters give the hydrophobic oxygen-eliminating device of sending into of water jet before low-pressure heater afterbody oxygen-eliminating device.
In the end the one-level high-pressure heater is hydrophobic, with steam jet pump boiler is sent on the hydrophobic service main of incorporating into road, and the driving steam of steam jet pump is the steam that one-level is drawn gas.
Also can behind the part bleeder heater, be provided with according to the situation of unit and to add the injecting type water-water jet, for example can be provided with at interval, just behind a bleeder heater, be provided with one and add the injecting type water-water jet.
Injecting type water-water jet 5 described in the utility model and steam jet pump 6 are existing product.
Claims (3)
1. hydrophobic attachment system of Steam Turbine Regenerative System, it comprises condenser, condensate pump, boiler and bleeder heater, it is characterized in that being provided with the injecting type water-water jet behind bleeder heater, behind the final stage high-pressure heater steam jet pump is set, steam jet pump is connected with main feed line.
2. the hydrophobic attachment system of Steam Turbine Regenerative System according to claim 1 is characterized in that on the described condensate pump variable-frequency power sources being installed.
3. the hydrophobic attachment system of Steam Turbine Regenerative System according to claim 1 is characterized in that described injecting type water-water jet is installed in 1.2-2.5m place, bleeder heater delivery port below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020171121XU CN201652319U (en) | 2010-04-27 | 2010-04-27 | Drainage connection system for steam turbine regenerative system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020171121XU CN201652319U (en) | 2010-04-27 | 2010-04-27 | Drainage connection system for steam turbine regenerative system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652319U true CN201652319U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020171121XU Expired - Lifetime CN201652319U (en) | 2010-04-27 | 2010-04-27 | Drainage connection system for steam turbine regenerative system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201652319U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235661A (en) * | 2010-04-27 | 2011-11-09 | 王汝武 | Drainage connecting system and method for steam turbine regeneration system |
| CN103090360A (en) * | 2011-11-02 | 2013-05-08 | 李建锋 | Energy recovery method of thermal power plant heat regenerative system |
-
2010
- 2010-04-27 CN CN201020171121XU patent/CN201652319U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235661A (en) * | 2010-04-27 | 2011-11-09 | 王汝武 | Drainage connecting system and method for steam turbine regeneration system |
| CN103090360A (en) * | 2011-11-02 | 2013-05-08 | 李建锋 | Energy recovery method of thermal power plant heat regenerative system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101124 Effective date of abandoning: 20141015 |
|
| RGAV | Abandon patent right to avoid regrant |