CN211082261U - Power station roots vacuum pump system with high reliability and efficiency - Google Patents
Power station roots vacuum pump system with high reliability and efficiency Download PDFInfo
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- CN211082261U CN211082261U CN201921333257.3U CN201921333257U CN211082261U CN 211082261 U CN211082261 U CN 211082261U CN 201921333257 U CN201921333257 U CN 201921333257U CN 211082261 U CN211082261 U CN 211082261U
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- vacuum pump
- cooling water
- roots vacuum
- isolation door
- closed cooling
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Abstract
The utility model discloses a reliable and efficient Roots vacuum pump system for a power station, wherein, firstly, a closed cooling water inlet main pipe of a Roots vacuum pump set is externally connected with an industrial water pipeline; and the other way is externally connected to an inlet pipeline of the open jellyfish pipe on the closed cooling water outlet main pipe of the Roots vacuum pump set. The utility model discloses a based on under power station closed cooling water system equipment breaks down or the high temperature environment in summer, open cooling water source temperature risees and leads to closed cooling water temperature to rise unusually, water ring vacuum pump working solution among the roots vacuum pump group worsens because of the heat transfer effect, vaporization takes place for inside working solution, the inside condition that produces the cavitation phenomenon of water ring vacuum pump, the purpose is avoided tending towards badly because of water ring vacuum pump operating condition, the suction capacity descends, cause equipment unusual shut down incident to take place, thereby improve power station power generation equipment's security, stability and economic nature.
Description
The technical field is as follows:
the invention belongs to the technical field of coal-fired power generation, and particularly relates to a reliable and efficient roots vacuum pump system for a power station.
Background art:
in the starting and normal operation processes of the power station steam turbine equipment, non-condensed gas in a condenser and a steam-water pipeline must be extracted in time so as to maintain the vacuum of the condenser, improve the steam-water heat transfer effect and improve the heat economy of the steam turbine equipment. Therefore, the auxiliary equipment, piping and valves in the vacuum system become essential components for the operation of the power station. The Roots vacuum pump set is used as main equipment of a vacuum system, and the running reliability and the working efficiency of the equipment play a vital role in the safe and stable running and the excellent economy of a power station.
The cooling water of the roots vacuum pump of the current power station is only one cooling water source and has no other external water source. The device has the defects that when the cooling water system equipment of the power station breaks down or is in a high-temperature environment in summer, the temperature of an external natural heat exchange water source and an internal heat exchange water source of the power station rises, the heat exchange effect of a working liquid of a water ring vacuum pump in the Roots vacuum pump set is deteriorated, the internal cavitation phenomenon is easy to occur, the operation working condition of the equipment is severe, the pumping capacity of the equipment is reduced, even the equipment is abnormally stopped, and the safe and stable operation of power station power generation equipment is seriously influenced.
The invention content is as follows:
the invention aims to overcome the problems and provides a reliable and efficient roots vacuum pump system for a power station, so that the optimized modification of a two-way cooling water source of a roots vacuum pump system of a million units is realized.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a reliable and efficient power station Roots vacuum pump system comprises a Roots vacuum pump set, wherein a closed cooling water inlet main pipe of the Roots vacuum pump set is externally connected with an industrial water pipeline; a closed cooling water outlet main pipe of the Roots vacuum pump set is externally connected with a pipeline to an inlet pipeline of an open jellyfish pipe;
a closed cooling water inlet isolation door is arranged on the closed cooling water inlet main pipe of the Roots vacuum pump set;
a front isolation door, a Y-shaped filter screen and a rear isolation door are sequentially connected in series on the industrial water pipeline;
a closed cooling water outlet isolation door is arranged on the closed cooling water outlet main pipe of the Roots vacuum pump set;
and an open jellyfish pipe inlet isolation door is arranged on the open jellyfish pipe inlet pipeline.
The further technical scheme is that the type of each isolation door is as follows: the front isolation door is a 3DN 100J 61H-25 isolation door, the rear isolation door is a DN 100J 61H-25 isolation door, the closed cooling water inlet isolation door is a DN 100J 61H-25 isolation door, the open water main pipe inlet isolation door is a DN 100J 61H-25 isolation door, and the closed cooling water outlet isolation door is a DN 100J 61H-25 isolation door.
The further technical scheme is that the Y-shaped filter screen is DN100 JSBIII Y-shaped filter screen.
The further technical proposal is that the roots vacuum pump set is a roots vacuum pump set A, B.
The reliability and the efficiency of the power station Roots vacuum pump system are improved, optimized and transformed, and the Roots vacuum pump set closed cooling water inlet main pipe is externally connected with one industrial water pipeline. The industrial water pipeline is sequentially connected in series with an industrial water inlet to a front isolating door, a rear isolating door and a Y-shaped filtering net of a Roots vacuum pump set A, B cooling water Y-shaped filtering net, and the Roots vacuum pump set closed cooling water inlet isolating door is arranged at the upper part of the connection between a Roots vacuum pump set A, B closed cooling water inlet main pipe and the industrial water inlet.
According to the operation requirement of a power station, field workers can flexibly switch closed cooling water and industrial water to be used as a cooling water source of the Roots vacuum pump set A, B by closing the closed cooling water inlet isolation door of the Roots vacuum pump set and opening the front isolation door and the rear isolation door of the Y-shaped filter screen of the cooling water of the Roots vacuum pump set A, B. Wherein, impurity and particulate matter in the industrial water can effectively be filtered to Y type filter screen, avoid the emergence of rotating member wearing and tearing and the heat exchanger jam condition. The Y-shaped filter screen can be repeatedly disassembled and cleaned, so that the maintenance cost of the power station is saved.
The reliability and the efficiency of the power station Roots vacuum pump system are improved, optimized and transformed, and the Roots vacuum pump set closed cooling water outlet main pipe is externally connected with an inlet pipeline of the open jellyfish main pipe. And a Roots vacuum pump set cooling water outlet to an open jellyfish pipe inlet isolating door and a Roots vacuum pump set closed cooling water outlet isolating door are arranged on the inlet pipeline of the open jellyfish pipe, and the Roots vacuum pump set closed cooling water outlet isolating door is arranged at the inlet connection downstream of the Roots vacuum pump set closed cooling water outlet main pipe and the open jellyfish pipe.
When the cooling water source of the Roots vacuum pump set A, B is industrial water, the industrial water can be prevented from entering a closed cooling water system of a power station, and water quality is prevented from polluting downstream working users. The cooled industrial water enters an open cooling water system of the power station to continuously participate in heat exchange, the water used by the power station is recycled, the operation cost of the power station is reduced, and the water-saving requirement of a local government environmental protection department is met.
Compared with the prior art, the invention has the following beneficial effects:
the reliability and efficiency of the roots vacuum pump system of the power station are improved, optimized and improved, the limitation of single cooling system of the traditional vacuum pump is broken through, when the cooling water source in the original design cannot meet the requirement of the existing equipment, the cooling water source can be switched on line and recycled, and the reliability and economical efficiency of the operation of the power station equipment system are improved.
Description of the drawings:
FIG. 1 is a system diagram of an industrial water pipeline externally connected to a closed cooling water inlet main pipe of a Roots vacuum pump set.
FIG. 2 is a system diagram of a closed cooling water outlet main pipe of the Roots vacuum pump set, which is externally connected with a pipeline to an inlet pipeline of an open water main pipe.
Wherein: 1. a rear isolation door; 2. a Y-shaped filter screen; 3. a front isolation door; 4. a closed cooling water inlet isolation door; 5. an open jellyfish pipe inlet isolation door; 6. a closed cooling water outlet isolation door; 7. a closed cooling water inlet main pipe; 8. an industrial water pipeline; 9. a closed cooling water outlet main pipe; 10 open type water mother pipe inlet pipeline.
The specific implementation mode is as follows:
the present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
Example 1
As shown in fig. 1 and 2, the reliable and efficient roots vacuum pump system for the power station comprises a roots vacuum pump set, wherein a closed cooling water inlet main pipe 7 of the roots vacuum pump set is externally connected with an industrial water pipeline 8; a closed cooling water outlet main pipe 9 of the Roots vacuum pump set is externally connected with a path to an open jellyfish inlet pipeline 10;
a closed cooling water inlet isolation door 4 is arranged on the closed cooling water inlet main pipe of the Roots vacuum pump set;
a front isolation door 3, a Y-shaped filter screen 2 and a rear isolation door 1 are sequentially connected in series on the industrial water pipeline;
a closed cooling water outlet isolation door 6 is arranged on a closed cooling water outlet main pipe of the Roots vacuum pump set;
an open jellyfish pipe inlet isolation door 5 is arranged on the open jellyfish pipe inlet pipeline;
the model of each isolation door is as follows: the front isolation door is a 3DN 100J 61H-25 isolation door, the rear isolation door is a DN 100J 61H-25 isolation door, the closed cooling water inlet isolation door is a DN 100J 61H-25 isolation door, the open water main pipe inlet isolation door is a DN 100J 61H-25 isolation door, and the closed cooling water outlet isolation door is a DN 100J 61H-25 isolation door.
The Y-shaped filter screen is DN100 JSBIII type Y-shaped filter screen.
The roots vacuum pump set is a roots vacuum pump set A, B.
Firstly, a closed cooling water inlet main pipe of the Roots vacuum pump set is externally connected with an industrial water pipeline; and the other way is externally connected to an inlet pipeline of the open jellyfish pipe on the closed cooling water outlet main pipe of the Roots vacuum pump set. The invention aims to avoid the occurrence of abnormal shutdown events of equipment due to severe operation conditions and reduced suction capacity of a water ring vacuum pump based on the conditions that the temperature of an open cooling water source is increased to cause abnormal increase of the temperature of closed cooling water when the equipment of a closed cooling water system of a power station breaks down or the temperature of the open cooling water source is increased in a high-temperature environment in summer, the working liquid of the water ring vacuum pump in a Roots vacuum pump set is vaporized due to deteriorated heat exchange effect, and the cavitation phenomenon is generated in the water ring vacuum pump.
Example 2
Embodiment of example 1:
referring to fig. 1 and 2, the newly added lines and valves are shown in phantom. DN 100J 61H-25 isolation door (3), DN 100J 61H-25 isolation door (1), DN100 JSBIII type Y-shaped filter screen (2) and DN 100J 61H-25 isolation door (4) are sequentially and serially connected and arranged on the industrial water pipeline. DN 100J 61H-25 isolation doors (5) and DN 100J 61H-25 isolation doors (6) are sequentially arranged on the inlet pipeline of the open jellyfish pipe, and the size of the laid stainless steel pipe is DN100 phi 114 mm.
Finally, the invention is not only suitable for a roots vacuum pump unit system of a power station, but also suitable for equipment and systems with higher requirements on cooling water temperature, and can improve the automation level of the system by adding equipment such as an online temperature measurement element, an electric valve, a power supply cabinet and a corresponding logic control system.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (4)
1. The utility model provides a reliability, efficient power station roots vacuum pump system which characterized in that: the device comprises a Roots vacuum pump set, wherein a closed cooling water inlet main pipe (7) of the Roots vacuum pump set is externally connected with an industrial water pipeline (8); a closed cooling water outlet main pipe (9) of the Roots vacuum pump set is externally connected with a pipeline to an open water main pipe inlet pipeline (10);
a closed cooling water inlet isolation door (4) is arranged on the closed cooling water inlet main pipe of the Roots vacuum pump set;
the industrial water pipeline is sequentially connected with a front isolation door (3), a Y-shaped filter screen (2) and a rear isolation door (1) in series;
a closed cooling water outlet isolation door (6) is arranged on the closed cooling water outlet main pipe of the Roots vacuum pump set; an open type water main pipe inlet isolation door (5) is arranged on the open type water main pipe inlet pipeline.
2. The reliable, efficient power station roots vacuum pump system of claim 1, wherein: the model of each isolation door is as follows: the front isolation door is a 3DN 100J 61H-25 isolation door, the rear isolation door is a DN 100J 61H-25 isolation door, the closed cooling water inlet isolation door is a DN 100J 61H-25 isolation door, the open water main pipe inlet isolation door is a DN 100J 61H-25 isolation door, and the closed cooling water outlet isolation door is a DN 100J 61H-25 isolation door.
3. The reliable, efficient power station roots vacuum pump system of claim 1, wherein: the Y-shaped filter screen is DN100 JSBIII type Y-shaped filter screen.
4. The reliable, efficient power station roots vacuum pump system of claim 1, wherein: the roots vacuum pump set is a roots vacuum pump set A, B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921333257.3U CN211082261U (en) | 2019-08-16 | 2019-08-16 | Power station roots vacuum pump system with high reliability and efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921333257.3U CN211082261U (en) | 2019-08-16 | 2019-08-16 | Power station roots vacuum pump system with high reliability and efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211082261U true CN211082261U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921333257.3U Expired - Fee Related CN211082261U (en) | 2019-08-16 | 2019-08-16 | Power station roots vacuum pump system with high reliability and efficiency |
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| CN (1) | CN211082261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566460A (en) * | 2019-08-16 | 2019-12-13 | 华能南京金陵发电有限公司 | Power station roots vacuum pump system with high reliability and efficiency |
-
2019
- 2019-08-16 CN CN201921333257.3U patent/CN211082261U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566460A (en) * | 2019-08-16 | 2019-12-13 | 华能南京金陵发电有限公司 | Power station roots vacuum pump system with high reliability and efficiency |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |