CN203867638U - Auxiliary steam heating system of turbine valve - Google Patents
Auxiliary steam heating system of turbine valve Download PDFInfo
- Publication number
- CN203867638U CN203867638U CN201420106499.XU CN201420106499U CN203867638U CN 203867638 U CN203867638 U CN 203867638U CN 201420106499 U CN201420106499 U CN 201420106499U CN 203867638 U CN203867638 U CN 203867638U
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- CN
- China
- Prior art keywords
- steam
- thermoelectric couple
- heating system
- controller
- auxiliary 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 - Lifetime
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005485 electric heating Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses an auxiliary steam heating system of a turbine valve. The auxiliary steam heating system of the turbine valve comprises a steam inlet pipeline, a first thermal couple, a second thermal couple, an electric heater, a controller, an outer shell, a check valve and a steam outlet pipeline. The first thermal couple is arranged in the steam inlet pipeline, the second thermal couple is arranged in the steam outlet pipeline, the first thermal couple and the second thermal couple are connected to the controller, the two ends of the electric heater are connected to the steam inlet pipeline and the steam outlet pipeline respectively, the steam outlet pipeline is provided with the check valve, and the steam inlet pipeline, the steam outlet pipeline, the first thermal couple, the second thermal couple, the electric heater, the controller and the check valve are arranged in the outer shell. The auxiliary steam heating system of the turbine valve can heat the auxiliary steam led to the valve and a cylinder, and is simple in structure, convenient to operate, good in heating effect and low in cost.
Description
Technical field
The utility model belongs to steam turbine equipment, is specifically related to steam turbine auxiliary steam heating system.
Background technique
Steam turbine is generally equipped with auxiliary steam heating system, in the time that steam turbine starts, for heating cylinder, flange bolt, valve, or provides sealing vapour source etc. for shaft seal.
When steam turbine cold start, auxiliary steam shifts to an earlier date pre-hot cylinder, flange bolt, valve etc., can reduce starting time.
Auxiliary steam temperature is no more than 250 degree conventionally, when hot the or very hot startup of unit, the temperature of cylinder and valve exceedes 400 degree conventionally, therefore when unit starting, auxiliary steam can not play heat effect, just the opposite, auxiliary steam is to the very fast cooling of the regional area such as valve and cylinder, and the larger tensile stress of generation.For combined cycle machine, because start and stop are frequent, and often in hot or very hot startup, therefore the regional area of auxiliary steam process easily produces heat fatigue cracking, serious threat unit safety operation.
Model utility content
The defect existing in order to overcome prior art, the utility model provides a kind of steam turbine auxiliary steam heating system.
The steam turbine auxiliary steam heating system providing according to the utility model, it comprises the first thermoelectric couple, the second thermoelectric couple, electric heater, controller, shell and check valve, wherein the first thermoelectric couple is arranged in admission pipeline the inside, the second thermoelectric couple is arranged in the inside, steam outlet pipe road, the first thermoelectric couple and the second thermoelectric couple are all connected on controller, the two ends of electric heater are connected respectively to admission pipeline and steam outlet pipe road, steam outlet pipe is provided with check valve on road, admission pipeline, steam outlet pipe road, the first thermoelectric couple, the second thermoelectric couple, electric heater, controller, check valve is all arranged in housings.
Preferably, steam turbine auxiliary steam enters electric heater by admission pipeline, before entering electric heater, measure vapor (steam) temperature and the signal measuring is offered to controller by the first thermoelectric couple being located on admission pipeline, controller regulates heater power according to the vapor (steam) temperature of import, steam turbine auxiliary steam heat temperature raising after electric heating, the auxiliary steam after intensification enters turbine system by outlet conduit.
Preferably, the second thermoelectric couple for thermometric being provided with on outlet conduit, the second thermoelectric couple is measured the vapor (steam) temperature after auxiliary steam heating, and by the signal feed back measuring to controller, controller is adjusted electrically heated heating power according to feedback temperature.
Preferably, on steam (vapor) outlet pipeline, be provided with check valve, prevent that steam from pouring in down a chimney.
The steam turbine auxiliary steam heating system of utilizing the utility model to provide, can will lead to the auxiliary steam heating of valve and cylinder, and system architecture is simple, easy to operate, and heating effect is good, and cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model steam turbine auxiliary steam heating system.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model.In the drawings, the implication of each reference character respectively: 1: admission pipeline, 2: thermoelectric couple, 2': the second thermoelectric couple, 3: electric heater, 4: controller, 5: shell, 6: check valve, 7: steam outlet pipe road.
As shown in Figure 1, steam turbine auxiliary steam heating system of the present utility model comprises admission pipeline 1, the first thermoelectric couple 2, the second thermoelectric couple 2', electric heater 3, controller 4, shell 5, check valve 6 and steam outlet pipe road 7.The first thermoelectric couple 2 is arranged in admission pipeline 1 the inside, the second thermoelectric couple 2' is arranged in 7 the insides, steam outlet pipe road, the first thermoelectric couple 2 and the second thermoelectric couple 2' are connected on controller 4, the two ends of electric heater 3 are connected respectively to admission pipeline 1 and steam outlet pipe road 7, check valve 6 is installed on steam outlet pipe road 7, the first thermoelectric couple 2, the second thermoelectric couple 2', electric heater 3, controller 4, check valve 6 are all arranged in shell 5 inside, have formed steam turbine auxiliary steam heating system.
The working principle of steam turbine auxiliary steam heating system of the present utility model is: steam turbine auxiliary steam enters electric heater 3 by admission pipeline 1, before entering electric heater 3, measure vapor (steam) temperature and the signal measuring is offered to controller 4 by the first thermoelectric couple 2 being located on admission pipeline 1, controller 4 regulates heater power according to the vapor (steam) temperature of import, steam turbine auxiliary steam heat temperature raising after electric heating, auxiliary steam after intensification enters turbine system by outlet conduit 7, outlet conduit 7 is provided with the second thermoelectric couple 2', for thermometric, the second thermoelectric couple 2' measures the vapor (steam) temperature after auxiliary steam heating, and by signal feed back to controller 4, controller 4 is adjusted electrically heated heating power according to feedback temperature.On steam (vapor) outlet pipeline 7, be provided with check valve 6, prevent that steam from pouring in down a chimney.
Above-described specific embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. a steam turbine auxiliary steam heating system, comprise admission pipeline (1), the first thermoelectric couple (2), the second thermoelectric couple (2'), electric heater (3), controller (4), shell (5), check valve (6) and steam outlet pipe road (7), it is characterized in that, the first thermoelectric couple (2) is arranged in admission pipeline (1) the inside, (2') the second thermoelectric couple is arranged in the inside, steam outlet pipe road (7), (2') the first thermoelectric couple (2) and the second thermoelectric couple are all connected on controller (4), the two ends of electric heater (3) are connected respectively to admission pipeline (1) and steam outlet pipe road (7), check valve (6) is installed on steam outlet pipe road (7), admission pipeline (1), steam outlet pipe road (7), the first thermoelectric couple (2), the second thermoelectric couple (2'), electric heater (3), controller (4), check valve (6) is all arranged in shell (5) inside.
2. steam turbine auxiliary steam heating system according to claim 1, is characterized in that, is provided with check valve (6) on steam (vapor) outlet pipeline (7), prevents that steam from pouring in down a chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420106499.XU CN203867638U (en) | 2014-03-10 | 2014-03-10 | Auxiliary steam heating system of turbine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420106499.XU CN203867638U (en) | 2014-03-10 | 2014-03-10 | Auxiliary steam heating system of turbine valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867638U true CN203867638U (en) | 2014-10-08 |
Family
ID=51648607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420106499.XU Expired - Lifetime CN203867638U (en) | 2014-03-10 | 2014-03-10 | Auxiliary steam heating system of turbine valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209525A (en) * | 2018-11-23 | 2019-01-15 | 陈济颖 | A kind of high back pressure vapor wheel unit |
-
2014
- 2014-03-10 CN CN201420106499.XU patent/CN203867638U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209525A (en) * | 2018-11-23 | 2019-01-15 | 陈济颖 | A kind of high back pressure vapor wheel unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |