CN216588739U - Novel shaft seal cooler for waste heat power generation - Google Patents
Novel shaft seal cooler for waste heat power generation Download PDFInfo
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- CN216588739U CN216588739U CN202122946350.5U CN202122946350U CN216588739U CN 216588739 U CN216588739 U CN 216588739U CN 202122946350 U CN202122946350 U CN 202122946350U CN 216588739 U CN216588739 U CN 216588739U
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- shaft seal
- collecting pipe
- power generation
- waste heat
- heat power
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Abstract
The utility model relates to the technical field of steam turbines, in particular to a novel shaft seal cooler for waste heat power generation, which comprises a front shaft seal and a rear shaft seal, wherein extraction pipes are fixed at the front shaft seal and the rear shaft seal, the other ends of the two extraction pipes are converged on the same collecting pipe through a tee joint, and the extraction pipes are communicated with the collecting pipe; a gas flow regulating valve is fixedly connected to the collecting pipe through a flange, and the other end of the collecting pipe is fixedly connected and communicated with a condenser. Original fan has been cancelled in this application, but utilizes the vacuum of condenser to extract the gas of bearing seal vapour side, replaces the function of fan, can save the power consumption.
Description
Technical Field
The utility model relates to the technical field of shaft seal coolers, in particular to a novel shaft seal cooler for waste heat power generation.
Background
During the cement production process, a large amount of steam is generated, and the steam is generally used for waste heat power generation, and the waste heat power generation is actually realized by a steam turbine. A certain gap exists between the front shaft and the rear shaft of the steam turbine and the corresponding bearings, and in order to prevent steam from leaking outwards from the large shaft of the steam turbine, a shaft seal structure is usually designed at a suitable position, but in the actual operation process, the steam leakage condition still exists at the shaft seal position. In the prior art, shaft seal coolers consisting of fans are mainly used for treating steam leakage, and particularly, the fans are used for extracting front and rear shaft seal steam leakage and door rod steam leakage of a steam turbine and cooling the steam leakage to recover heat. This requires that the fan be guaranteed to operate stably on site to ensure the vacuum on the inlet side. But because of there are multiple operating condition in the leak steam of steam turbine front and back bearing seal, start with normal operating at the steam turbine, the trend of leak steam is different, and corresponding extraction volume is also different, if rely on the fan, can't be adapted to different operating condition, gathers the condensate water easily in the fan moreover, influences the service behavior and the life of fan.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a novel shaft seal cooler for waste heat power generation, which has a more reasonable structural design, so as to realize the purpose of safe operation.
In order to achieve the purpose, the utility model adopts the technical scheme that: the novel shaft seal cooler for waste heat power generation comprises a front shaft seal and a rear shaft seal, and is characterized in that extraction pipes are fixed at the front shaft seal and the rear shaft seal, the other ends of the two extraction pipes are collected on the same collecting pipe through a tee joint, and the extraction pipes are communicated with the collecting pipe; a gas flow regulating valve is fixedly connected to the collecting pipe through a flange, and the other end of the collecting pipe is fixedly connected and communicated with a condenser.
Furthermore, a throttle orifice is arranged inside a flange at the inlet of the air flow regulating valve. Through the setting of orifice plate, can further guarantee the safe operation of turboset.
Furthermore, a bell mouth is fixedly connected with the end part of each extraction pipe close to the shaft seal side. The shaft seal side gas is convenient to extract.
Compared with the prior art, the utility model has the beneficial effects that:
the original fan is omitted, the vacuum of the condenser is used for extracting gas on the steam side of the shaft seal, the function of the fan is replaced, and power consumption can be saved; and through the air current governing valve that adds, can adjust the extraction volume, make the extraction volume keep on invariable level, satisfy different operating condition, more be favorable to the safe and stable operation of system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the device comprises a shaft seal 1, an extraction pipe 2, a collection pipe 3, a collection pipe 4, an air flow regulating valve 5, a flange 6, a condenser 7 and a bell mouth.
Detailed Description
The utility model will now be further elucidated with reference to the drawing. The following is the most preferred embodiment of the utility model, but it should not be construed as limiting the scope of the utility model, and any equivalent or similar substitutes without departing from the spirit of the utility model are intended to fall within the scope of the utility model. In addition, the terms "fixedly connecting" and "fixing" are used in the prior art, and include conventional fixing methods such as bolt fixing. And all parts not described in detail below should be performed as in the prior art.
As shown in fig. 1, the novel shaft seal cooler for waste heat power generation of the utility model comprises a front shaft seal 1 and a rear shaft seal 1, wherein extraction pipes 2 are fixed at the front shaft seal 1 and the rear shaft seal 1, the other ends of the two extraction pipes 2 are converged on the same collection pipe 3 through a tee joint, and the extraction pipes 2 are communicated with the collection pipe 3; an air flow regulating valve 4 is fixedly connected to the collecting pipe 3 through two flanges 5, and the other end of the collecting pipe 3 is fixedly connected and communicated with a condenser 6. The vacuum of the condenser 6 is used for extracting the vacuum on the steam side of the cooler of the shaft seal 1, so that the function of a fan is replaced, and the electric energy is saved.
A throttle orifice is fixedly connected with the inner part of the flange at the inlet of the air flow regulating valve 4 according to a conventional mode. Through the arrangement of the throttle orifice plate with the aperture diameter of 8mm, the vacuum of the steam turbine and the adjustment interference caused by misoperation of operators can be ensured, and the safe operation of the steam turbine set is further ensured.
A bell mouth 7 is fixedly connected and communicated with the end part of each extraction pipe 2 close to the shaft seal 1 side. The gas at the shaft seal 1 side can be conveniently extracted.
When the steam collector is used, the vacuum generated when the condenser 6 works is utilized to extract the steam leakage at the upper and lower shaft seals 1, and the collected steam is sent into the condenser for heat exchange. The utility model can be suitable for various operation working conditions such as different steam leakage trends, steam leakage amount and the like through the arrangement of the air flow regulating valve, and effectively ensures the safe and stable operation of the system.
Claims (3)
1. The novel shaft seal cooler for waste heat power generation comprises a front shaft seal (1) and a rear shaft seal (1), and is characterized in that extraction pipes (2) are fixed at the positions of the front shaft seal (1) and the rear shaft seal (1), the other ends of the two extraction pipes (2) are converged on the same collecting pipe (3) through a tee joint, and the extraction pipes (2) are communicated with the collecting pipe (3); an air flow regulating valve (4) is fixedly connected to the collecting pipe (3) through a flange, and the other end of the collecting pipe (3) is fixedly connected and communicated with a condenser (6).
2. The shaft seal cooler for waste heat power generation as claimed in claim 1, characterized in that a throttle orifice is installed inside the flange at the inlet of the air flow regulating valve (4).
3. The novel shaft seal cooler for waste heat power generation as defined in claim 1 or 2, wherein a bell mouth (7) is fixedly connected to the end of each extraction pipe (2) close to the shaft seal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122946350.5U CN216588739U (en) | 2021-11-29 | 2021-11-29 | Novel shaft seal cooler for waste heat power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122946350.5U CN216588739U (en) | 2021-11-29 | 2021-11-29 | Novel shaft seal cooler for waste heat power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216588739U true CN216588739U (en) | 2022-05-24 |
Family
ID=81648938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122946350.5U Active CN216588739U (en) | 2021-11-29 | 2021-11-29 | Novel shaft seal cooler for waste heat power generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216588739U (en) |
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2021
- 2021-11-29 CN CN202122946350.5U patent/CN216588739U/en active Active
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