CN203420746U - Steam turbine air cylinder interlayer heating device - Google Patents
Steam turbine air cylinder interlayer heating device Download PDFInfo
- Publication number
- CN203420746U CN203420746U CN201320462732.3U CN201320462732U CN203420746U CN 203420746 U CN203420746 U CN 203420746U CN 201320462732 U CN201320462732 U CN 201320462732U CN 203420746 U CN203420746 U CN 203420746U
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- steam
- steam turbine
- main
- cylinder interlayer
- air cylinder
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Abstract
The utility model relates to steam turbine auxiliary equipment, in particular to a steam turbine air cylinder interlayer heating device. The steam turbine air cylinder interlayer heating device comprises a main steam guide pipe, a throttle valve and an electric main air valve, wherein the main steam guide pipe is communicated with the rotor portion of a steam turbine, the electric main air valve and the throttle valve are sequentially arranged on the main steam guide pipe in the steam flowing direction, a bypass steam guide pipe is arranged on the portion, between the electric main air valve and the throttle valve, of the main steam guide pipe, and the bypass steam guide pipe is communicated with an air cylinder interlayer of the steam turbine. The steam turbine air cylinder interlayer heating device has the advantages that the amount of steam entering the air cylinder interlayer is increased, and the expansion difference between the rotor of the steam turbine and the air cylinder is reduced.
Description
Technical field
The utility model relates to steam turbine supplementary equipment, particularly steam turbine cylinder interlayer heating equipment.
Background technique
By steam, coming pushing turbine to rotate, thereby drive the work of generator unit, is a kind of main way generating electricity now; When steam turbine starts, can produce one swollen poor, steam turbine differential expansion just refers to the difference of turbine rotor and cylinder expansion, one of most important parameter when it is steam turbine startup, operation and variable parameter operation.If swollen poor control good, unit just starts in accordance with regulations starting time smoothly.
Generator set is a double shell structure, and steam major part comes drive rotor to forward to by steam lead, can heat rotor simultaneously, wherein on steam lead, along vapor flow direction, is connected with electronic main air valve and air throttle in turn; For steam turbine differential expansion, part steam heats cylinder interlayer by the conduit of bypass; Yet after now the steam lead of cylinder interlayer heating being arranged on to modulating valve, because steam turbine is when starting, the speed of expansion of rotor is greater than the speed of expansion of cylinder baffle; Unit is when starting like this, and because steam flow is too small, cylinder cannot heat, and causes the swollen difference of steam turbine start-up course transfinite and cause steam turbine to start.
Model utility content
The utility model be to solve owing to entering the steam flow of cylinder interlayer too small, the problem that causes steam turbine to start.
In order to address the above problem, the technological scheme providing is, steam turbine cylinder interlayer heating equipment, and main steam conduit, air throttle and electronic main air valve, wherein main steam conduit is communicated with the rotor portion of steam turbine; Electronic main air valve and air throttle are successively set on main steam conduit along vapor flow direction; On main steam conduit between described electronic main air valve and air throttle, be provided with reject steam conduit, this reject steam conduit is communicated with the cylinder interlayer of steam turbine.
Use benefit of the present utility model to be: reject steam conduit is arranged on the main steam conduit between electronic main air valve and air throttle, under the restriction that there is no air throttle, because the temperature of steam is more than 300 ℃, increased the air inflow of reject steam conduit, the heating-up temperature of cylinder interlayer is got a promotion fast, as long as control air throttle well, just swollen difference between rotor and cylinder can be narrowed down in predetermined range.
Preferably, consider the convenience of maintenance, described reject steam conduit and main steam conduit linkage structure are flange arrangement; When needing repairing reject steam conduit, can pull down reject steam conduit by flange arrangement like this, keep in repair or install.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment's steam turbine cylinder interlayer heating equipment.
Embodiment
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Be illustrated in figure 1 the steam turbine cylinder interlayer heating equipment that the present embodiment is mentioned, comprise main steam conduit 1, air throttle 4 and electronic main air valve 3, wherein main steam conduit 1 is communicated with rotor 21 parts of steam turbine 2; Electronic main air valve 3 and air throttle 4 are successively set on main steam conduit 1 along vapor flow direction; On main steam conduit 1 between electronic main air valve 3 and air throttle 4, be provided with reject steam conduit 5, this reject steam conduit 5 is communicated with the cylinder interlayer 22 of steam turbine 2.
In steam turbine start-up course, reject steam conduit 5 is arranged on the main steam conduit 1 between electronic main air valve 3 and air throttle 4, reject steam conduit 5 can not be subject to air throttle 4 actuating pressures and reduces like this, because the temperature of steam is more than 300 ℃, and steam is by after pressurizeing, the air inflow of reject steam conduit 5 is increased, the steam that enters like this cylinder interlayer 22 increases, steam is got a promotion fast to the heating-up temperature of cylinder interlayer 22, by controlling the air throttle 4 on main steam conduit 1, just swollen difference between rotor 21 and cylinder can be narrowed down in predetermined range, for the swollen difference of the steam turbine of inferior high temperature sub-high pressure twin-tub type generally below 0.8mm, just can smoothly steam turbine be started.
Consider the convenience of maintenance, described reject steam conduit 5 and main steam conduit 1 linkage structure are flange arrangement 6; When needing repairing reject steam conduit 5, can pull down reject steam conduit 5 by flange arrangement 6 like this, keep in repair or install.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (2)
1. steam turbine cylinder interlayer heating equipment, comprises main steam conduit, air throttle and electronic main air valve, and wherein main steam conduit is communicated with the rotor portion of steam turbine; Electronic main air valve and air throttle are successively set on main steam conduit along vapor flow direction, it is characterized in that: on the main steam conduit between described electronic main air valve and air throttle, be provided with reject steam conduit, this reject steam conduit is communicated with the cylinder interlayer of steam turbine.
2. steam turbine cylinder interlayer heating equipment according to claim 1, is characterized in that: described reject steam conduit and main steam conduit linkage structure are flange arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462732.3U CN203420746U (en) | 2013-07-31 | 2013-07-31 | Steam turbine air cylinder interlayer heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462732.3U CN203420746U (en) | 2013-07-31 | 2013-07-31 | Steam turbine air cylinder interlayer heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420746U true CN203420746U (en) | 2014-02-05 |
Family
ID=50019845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320462732.3U Expired - Lifetime CN203420746U (en) | 2013-07-31 | 2013-07-31 | Steam turbine air cylinder interlayer heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952501A (en) * | 2016-06-12 | 2016-09-21 | 玖龙纸业(天津)有限公司 | Heating layer heating header innovation device |
-
2013
- 2013-07-31 CN CN201320462732.3U patent/CN203420746U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952501A (en) * | 2016-06-12 | 2016-09-21 | 玖龙纸业(天津)有限公司 | Heating layer heating header innovation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401221 Yanjia Industrial Park, Changshou District, Chongqing Patentee after: Chongqing Iron and steel energy and environmental protection Co.,Ltd. Patentee after: CECEP INDUSTRIAL ENERGY CONSERVATION Co.,Ltd. Address before: 401221 Yanjia Industrial Park, Changshou District, Chongqing Patentee before: CHONGQING QIANXIN ENERGY ENVIRONMENTAL PROTECTION Co.,Ltd. Patentee before: CECEP INDUSTRIAL ENERGY CONSERVATION Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 401221 Yanjia Industrial Park, Changshou District, Chongqing Patentee after: CHONGQING QIANXIN ENERGY ENVIRONMENTAL PROTECTION Co.,Ltd. Patentee after: CECEP INDUSTRIAL ENERGY CONSERVATION Co.,Ltd. Address before: 401120 Yanjia Industrial Park, Changshou District, Chongqing Patentee before: CHONGQING CECEP SANFENG ENERGY Co.,Ltd. Patentee before: CECEP INDUSTRIAL ENERGY CONSERVATION Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |
|
| CX01 | Expiry of patent term |