CN214303967U - Shaft seal cooling drainage system for steam turbine of thermal power plant - Google Patents
Shaft seal cooling drainage system for steam turbine of thermal power plant Download PDFInfo
- Publication number
- CN214303967U CN214303967U CN202023275866.3U CN202023275866U CN214303967U CN 214303967 U CN214303967 U CN 214303967U CN 202023275866 U CN202023275866 U CN 202023275866U CN 214303967 U CN214303967 U CN 214303967U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- drain
- water
- shaft seal
- shaft
- 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 - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 238000004891 communication Methods 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 description 16
- 210000004907 gland Anatomy 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model provides a shaft seal cooling drainage system for steam turbine of thermal power plant, includes that shaft seal leaks vapour pipeline, shaft seal cooler, noncondensable gas main line, first noncondensable gas branch pipeline and second noncondensable gas branch pipeline. First manual valve, first flexible joint, first axle air entrainment machine, first check valve set gradually on the first noncondensable gas branch pipeline. The first branch noncondensable gas pipeline also comprises a first drain pipeline and a first gas discharge pipeline. The first drain pipeline is sequentially provided with a first drain valve and a first water seal pipe. And a second manual valve, a second flexible joint, a second shaft blower and a second check valve are sequentially arranged on the second non-condensable gas branch pipeline. The second non-condensable gas branch pipeline also comprises a second drain pipeline and a second gas discharge pipeline, and a second water discharge valve and a second water seal pipe are sequentially arranged on the second drain pipeline. The shaft seal system solves the technical problems that condensed water in a shaft-adding fan of a shaft seal system of a steam turbine of the existing thermal power plant cannot be discharged in real time, potential safety hazards exist, and the work efficiency of the discharged condensed water is low.
Description
Technical Field
The utility model relates to an electric power energy technical field, in particular to bearing seal cooling drainage system for steam turbine of thermal power plant.
Background
With the rapid development of economy in China and the improvement of living standard of people, the demand of society on electric power is continuously increased, and although novel water conservancy power generation, solar power generation and the like exist at present, the main power generation mode is thermal power generation. The steam turbine is a main device of a modern thermal power plant, is also called a steam turbine engine and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards.
The large shaft of the steam turbine rotating at high speed outputs power, so a certain gap is necessarily left between the large shaft and the bearing to meet the requirement of small-amplitude vibration generated in rotation. In order to prevent steam in the steam turbine from leaking out of the turbine main shaft, a shaft seal system is usually designed on the steam turbine. In the operation process of the steam turbine, part of steam is inevitably leaked to the atmosphere from the shaft end, so that working medium and heat loss is caused, and meanwhile, the working environment of the steam turbine generator is also influenced. For this purpose, a gland seal cooler and a shaft blower are also provided in the gland seal system of the steam turbine. The steam leaked from the steam turbine shaft end is sucked into the shaft seal cooler through the shaft fan, the cooled steam is divided into two parts, the condensed steam is discharged into the condenser, and the non-condensed gas in the steam is discharged into the atmosphere through the shaft fan.
The axle adds the fan in the use, and the gas that the axle adds the fan and takes out contains a large amount of vapor, forms a large amount of condensate water at outlet pipeline often, and the hydrophobic pipeline can not normally dredge the hydrophobic that condenses out, and the condensate water can flow backwards and get into the axle and add the fan, and the condensate water gathering can not in time discharge in the axle adds the fan to lead to the current too big, vibrate unusual phenomena such as too big, the electric current swing, cause accidents such as bearing seal water-throwing loss motor even. At present, the conventional mode is to close an inlet manual door before a shaft air feeder is started, open a drain valve at the bottom of the shaft air feeder to drain water, and start the shaft air feeder after accumulated water at the bottom of the shaft air feeder is drained. Such an operation is troublesome, reduces work efficiency, and cannot fundamentally solve the problem.
In view of this, how to design the condensation ponding that can discharge in the axle adds the fan in real time to the bearing seal system of the steam turbine of thermal power plant, improve work efficiency, the cooling drainage system that reduces the potential safety hazard is the utility model discloses the subject of research.
Disclosure of Invention
The utility model provides a bearing seal cooling drainage system for steam turbine of thermal power plant, the condensation ponding that its purpose will solve in the bearing adds the fan in the current bearing seal system for steam turbine of thermal power plant can not discharge in real time, has the potential safety hazard, and the lower technical problem of condensation ponding work efficiency of just discharging.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a gland seal cooling drainage system for steam turbine of thermal power plant, gland seal cooling drainage system includes gland seal steam leakage pipeline, gland seal cooler, noncondensable gas main line, first noncondensable gas branch pipeline and second noncondensable gas branch pipeline.
The steam outlet of the shaft seal steam leakage pipeline is connected with the steam inlet of the shaft seal cooler; the main noncondensable gas pipeline is provided with an air inlet and two air outlets, wherein the air inlet of the main noncondensable gas pipeline is connected with the air outlet of the shaft seal cooler; one air outlet of the main noncondensable gas pipeline is connected with an air inlet of the first branch noncondensable gas pipeline to achieve the communication between the first branch noncondensable gas pipeline and the main noncondensable gas pipeline; and the other gas outlet of the main noncondensable gas pipeline is connected with the gas inlet of the second branch noncondensable gas pipeline, so that the second branch noncondensable gas pipeline is communicated with the main noncondensable gas pipeline.
The first non-condensable gas branch pipeline is sequentially provided with a first manual valve, a first flexible joint, a first shaft air adding machine and a first check valve along the flow direction of non-condensable gas, and the bottom of the first shaft air adding machine is provided with a first drain port; the first non-condensable gas branch pipeline further comprises a first drain pipeline and a first gas discharge pipeline, a water inlet of the first drain pipeline is connected with a first drain port of the first shaft air adding machine, and a water outlet of the first drain pipeline is connected with the floor drain; a first drain valve and a first water seal pipe are sequentially arranged on the first drain pipeline along the flowing direction of water; the first air release pipeline is connected to the first check valve.
A second manual valve, a second flexible joint, a second shaft air adding machine and a second check valve are sequentially arranged on the second non-condensable gas branch pipeline along the flowing direction of the non-condensable gas, and a second drain port is formed in the bottom of the second shaft air adding machine; the second non-condensable gas branch pipeline also comprises a second drain pipeline and a second gas discharge pipeline, a water inlet of the second drain pipeline is connected with a second drain port of the second shaft air adding machine, and a water outlet of the second drain pipeline is connected with the floor drain; a second drain valve and a second water seal pipe are sequentially arranged on the second drain pipeline along the flowing direction of water; and the second gas discharge pipeline is connected to the second check valve.
The relevant content in the above technical solution is explained as follows:
1. in the scheme, the steam outlet of the shaft seal steam leakage pipeline is connected with the steam inlet of the shaft seal cooler. And leading steam leaked from the shaft end of the steam turbine to enter a shaft seal cooler.
2. In the above-mentioned scheme, set up first noncondensable gas branch pipeline and the noncondensable gas branch pipeline of second, and two branch pipelines are parallelly connected, all be equipped with a axle air feeder on two branch pipelines, one is used for one and is equipped with, another fan merges into the system immediately after guaranteeing a fan tripping operation, it is reserve (the manual valve of opening the spare axle air feeder entry) to open the door with the spare axle air feeder usually, the outlet pipeline at the axle air feeder often forms a large amount of condensate water, flow to spare axle air feeder, lead to inside ponding of spare axle air feeder, the spare axle air feeder of ponding is in case started suddenly, cause the electric current big easily, the vibration is big and lead to the fan tripping operation. For solving this problem, all set up hydrophobic mouthful in the bottom of two axles with the fan, and all link to establish a hydrophobic pipeline on hydrophobic mouthful, no matter axle in the use adds the fan or spare axle adds the fan, its inside condensate water all can be real-time discharges through hydrophobic pipeline, accomplishes real-time hydrophobic, avoids forming ponding, improves the security performance, has guaranteed the reliability of system. And the separate water discharging operation is not needed, so that the operation steps are simplified.
3. In the above scheme, all set up the water seal pipe on first hydrophobic pipeline and the second hydrophobic pipeline, can guarantee that the condensate water in the axle adds the fan can in time discharge along with the water seal liquid, also can set up the water seal height according to the negative pressure requirement, guarantees to satisfy the axle and adds the fan in the negative pressure requirement. The calculation is carried out according to the negative pressure-10 KPA required by the shaft seal system, the-10 KPA corresponds to 1000mm water column, so the water seal height is required to be more than 1000mm, namely the top of the water seal cylinder is at least 1000mm away from the bottom of the shaft seal fan, and the water seal height can be ensured to seal the negative pressure of the system, which can be understood by the technical personnel in the field.
4. In the scheme, the first drain pipeline and the second drain pipeline are both provided with flexible joints. The axle adds fan bulky, the casing is thinner, the rigidity is relatively poor, originally adopts steel pipe and axle to add fan lug connection, and the condition that the axle adds the fan bump and rub the tripping operation can take place during cold starting, adds flexible joint at the axle and adds the fan entry now, can play effects such as damping, noise reduction, the dismouting of the axle of being convenient for simultaneously adding the fan.
5. In the above scheme, the first air bleed pipeline is communicated with the second air bleed pipeline.
6. In the above scheme, the first noncondensable gas branch pipeline is located above the shaft seal cooler.
7. In the above scheme, the second non-condensable gas branch pipeline is located above the shaft seal cooler.
8. In the above scheme, the water seal height of the first water seal pipe is greater than 1000 mm.
9. In the above scheme, the water seal height of the second water seal pipe is greater than 1000 mm.
10. In the above scheme, set gradually first manual valve, first flexible joint, primary shaft air adding machine, first check valve along the noncondensable gas flow direction on the first noncondensable gas branch road. The first non-condensable gas branch pipeline is provided with a first manual valve, a first flexible joint, a first shaft air adding machine and a first check valve from front to back in sequence along the flow direction of the non-condensable gas.
11. In the above scheme, the first drain pipeline is sequentially provided with the first drain valve and the first water seal pipe along the flow direction of water. The water draining device is characterized in that a first water draining valve and a first water sealing pipe are sequentially arranged on a first water draining pipeline from front to back along the flowing direction of water.
12. In the above scheme, the second non-condensable gas branch pipeline is sequentially provided with a second manual valve, a second flexible joint, a second shaft air adding machine and a second check valve along the flow direction of the non-condensable gas. The second manual valve, the second flexible joint, the second shaft air adding machine and the second check valve are sequentially arranged on the second non-condensable gas branch pipeline from front to back along the flow direction of the non-condensable gas.
13. In the above scheme, the second drain pipeline is sequentially provided with the second drain valve and the second water seal pipe along the flow direction of water. The second drain valve and the second water seal pipe are sequentially arranged on the second drain pipeline from front to back along the flowing direction of water.
The utility model discloses theory of operation and advantage as follows:
the utility model discloses set up first noncondensable gas branch pipeline and second noncondensable gas branch pipeline, and two branch pipelines are parallelly connected, all be equipped with an axle on two branch pipelines and add the fan, one is used for one and is equipped with, and all set up hydrophobic mouthful in the bottom of two axles with the fan, and all link to establish a hydrophobic pipeline on hydrophobic mouthful, no matter the axle in use adds the fan or the spare axle adds the fan, its inside condensate water all can be real-time discharges through hydrophobic pipeline, accomplish real-time hydrophobic, avoid forming ponding, the security performance is improved, the reliability of system has been guaranteed. And the independent water discharging operation is not needed, the operation step of discharging accumulated water is simplified, and the working efficiency is improved.
The utility model discloses an all set up the water seal pipe on first hydrophobic pipeline and the second hydrophobic pipeline, can guarantee that the condensate water in the axle adds the fan can in time discharge along with water seal liquid, also can set up the water seal height according to the negative pressure requirement, guarantees to satisfy the axle and adds the fan in the negative pressure requirement.
The utility model discloses a set up flexible joint respectively before two axles add the fan, can play effects such as damping, noise reduction, take place the axle when avoiding cold start to add the fan and bump the condition of grinding the tripping operation, the dismouting of the axle of being convenient for simultaneously adding the fan.
Drawings
FIG. 1 is the utility model discloses a shaft seal cooling drainage system's for steam turbine of thermal power plant structural schematic.
In the above drawings: 1. shaft seal steam leakage pipeline; 2. a shaft seal cooler; 3. a main noncondensable gas pipeline; 4. a first non-condensable gas branch pipeline; 5. a second non-condensable gas branch pipeline; 6. a first manual valve; 7. a first flexible joint; 8. a first shaft blower; 9. a first check valve; 10. a first drain port; 11. a first drain line; 12. a first bleed line; 13. a floor drain; 14. a first water drain valve; 15. a first water seal pipe; 16. a second manual valve; 17. a second flexible joint; 18. a second shaft air adding machine; 19. a second check valve; 20. a second drain port; 21. a second drain line; 22. a second bleed line; 23. a second water drain valve; 24. and a second water-sealed pipe.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): shaft seal cooling drainage system for steam turbine of thermal power plant
Referring to the attached drawing 1, the shaft seal cooling drainage system comprises a shaft seal steam leakage pipeline 1, a shaft seal cooler 2, a main noncondensable gas pipeline 3, a first noncondensable gas branch pipeline 4 and a second noncondensable gas branch pipeline 5.
The steam outlet of the shaft seal steam leakage pipeline 1 is connected with the steam inlet of the shaft seal cooler 2; the main noncondensable gas pipeline 3 is provided with an air inlet and two air outlets, wherein the air inlet of the main noncondensable gas pipeline 3 is connected with the air outlets of the shaft seal coolers 2; one air outlet of the main noncondensable gas pipeline 3 is connected with an air inlet of the first noncondensable gas branch pipeline 4, so that the first noncondensable gas branch pipeline 4 is communicated with the main noncondensable gas pipeline 3; the other air outlet of the main noncondensable gas pipeline 3 is connected with the air inlet of the second branch noncondensable gas pipeline 5, so that the second branch noncondensable gas pipeline 5 is communicated with the main noncondensable gas pipeline 3.
A first manual valve 6, a first flexible joint 7, a first shaft air adding machine 8 and a first check valve 9 are sequentially arranged on the first non-condensable gas branch pipeline 4 along the flow direction of non-condensable gas, and a first drain port 10 is formed at the bottom of the first shaft air adding machine 8; the first non-condensable gas branch pipeline 4 further comprises a first drain pipeline 11 and a first gas discharge pipeline 12, a water inlet of the first drain pipeline 11 is connected with a first drain port 10 of the first shaft air adding machine 8, and a water outlet of the first drain pipeline 11 is connected with a floor drain 13; a first water drain valve 14 and a first water seal pipe 15 are sequentially arranged on the first drain pipeline 11 along the flowing direction of water; the first bleed line 12 is connected to the first check valve 9. The first noncondensable gas branch pipeline 4 is positioned above the shaft seal cooler 2. The water seal height of the first water seal pipe 15 is larger than 1000 mm.
A second manual valve 16, a second flexible joint 17, a second shaft air adding machine 18 and a second check valve 19 are sequentially arranged on the second non-condensable gas branch pipeline 5 along the flowing direction of non-condensable gas, and a second drain port 20 is formed at the bottom of the second shaft air adding machine 18; the second non-condensable gas branch pipeline 5 further comprises a second drain pipeline 21 and a second gas discharge pipeline 22, a water inlet of the second drain pipeline 21 is connected with a second drain port 20 of the second shaft air heater 18, and a water outlet of the second drain pipeline 21 is connected with the floor drain 13; a second drain valve 23 and a second water seal pipe 24 are sequentially arranged on the second drain pipeline 21 along the flowing direction of water; the second bleed line 22 is connected to the second check valve 19. The first bleed air line 12 is in communication with a second bleed air line 22. The second noncondensable gas branch pipeline 5 is positioned above the shaft seal cooler 2. The water seal height of the second water seal pipe 24 is larger than 1000 mm.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides a shaft seal cooling drainage system for steam turbine of thermal power plant which characterized in that: the shaft seal cooling drainage system comprises a shaft seal steam leakage pipeline (1), a shaft seal cooler (2), a non-condensable gas main pipeline (3), a first non-condensable gas branch pipeline (4) and a second non-condensable gas branch pipeline (5);
the steam outlet of the shaft seal steam leakage pipeline (1) is connected with the steam inlet of the shaft seal cooler (2); the main noncondensable gas pipeline (3) is provided with an air inlet and two air outlets, wherein the air inlet of the main noncondensable gas pipeline (3) is connected with the air outlet of the shaft seal cooler (2); one air outlet of the main noncondensable gas pipeline (3) is connected with the air inlet of the first branch noncondensable gas pipeline (4) to achieve the communication between the first branch noncondensable gas pipeline (4) and the main noncondensable gas pipeline (3); the other air outlet of the main noncondensable gas pipeline (3) is connected with the air inlet of a second noncondensable gas branch pipeline (5) to achieve the communication between the second noncondensable gas branch pipeline (5) and the main noncondensable gas pipeline (3);
a first manual valve (6), a first flexible joint (7), a first shaft air adding machine (8) and a first check valve (9) are sequentially arranged on the first non-condensable gas branch pipeline (4) along the flow direction of non-condensable gas, and a first water drainage port (10) is formed in the bottom of the first shaft air adding machine (8); the first non-condensable gas branch pipeline (4) further comprises a first drain pipeline (11) and a first gas discharge pipeline (12), a water inlet of the first drain pipeline (11) is connected with a first drain port (10) of the first axial air adding fan (8), and a water outlet of the first drain pipeline (11) is connected with a floor drain (13); a first water drain valve (14) and a first water seal pipe (15) are sequentially arranged on the first drainage pipeline (11) along the flowing direction of water; the first gas discharge pipeline (12) is connected with the first check valve (9);
a second manual valve (16), a second flexible joint (17), a second shaft air adding machine (18) and a second check valve (19) are sequentially arranged on the second non-condensable gas branch pipeline (5) along the flowing direction of the non-condensable gas, and a second drain hole (20) is formed in the bottom of the second shaft air adding machine (18); the second non-condensable gas branch pipeline (5) further comprises a second drain pipeline (21) and a second gas discharge pipeline (22), a water inlet of the second drain pipeline (21) is connected with a second drain port (20) of a second shaft air adding fan (18), and a water outlet of the second drain pipeline (21) is connected with a floor drain (13); a second drain valve (23) and a second water seal pipe (24) are sequentially arranged on the second drain pipeline (21) along the flowing direction of water; the second air discharge pipeline (22) is connected with a second check valve (19).
2. The shaft seal cooling drain system for a steam turbine of a thermal power plant according to claim 1, wherein: the first air release pipeline (12) is communicated with the second air release pipeline (22).
3. The shaft seal cooling drain system for a steam turbine of a thermal power plant according to claim 1, wherein: the first non-condensable gas branch pipeline (4) is positioned above the shaft seal cooler (2).
4. The shaft seal cooling drain system for a steam turbine of a thermal power plant according to claim 1, wherein: the second non-condensable gas branch pipeline (5) is positioned above the shaft seal cooler (2).
5. The shaft seal cooling drain system for a steam turbine of a thermal power plant according to claim 1, wherein: the water seal height of the first water seal pipe (15) is larger than 1000 mm.
6. The shaft seal cooling drain system for a steam turbine of a thermal power plant according to claim 1, wherein: the water seal height of the second water seal pipe (24) is larger than 1000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023275866.3U CN214303967U (en) | 2020-12-30 | 2020-12-30 | Shaft seal cooling drainage system for steam turbine of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023275866.3U CN214303967U (en) | 2020-12-30 | 2020-12-30 | Shaft seal cooling drainage system for steam turbine of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214303967U true CN214303967U (en) | 2021-09-28 |
Family
ID=77819726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023275866.3U Expired - Fee Related CN214303967U (en) | 2020-12-30 | 2020-12-30 | Shaft seal cooling drainage system for steam turbine of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214303967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046184A (en) * | 2021-10-22 | 2022-02-15 | 安徽长江钢铁股份有限公司 | Cooling device for steam turbine shaft seal air leakage |
-
2020
- 2020-12-30 CN CN202023275866.3U patent/CN214303967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046184A (en) * | 2021-10-22 | 2022-02-15 | 安徽长江钢铁股份有限公司 | Cooling device for steam turbine shaft seal air leakage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214303967U (en) | Shaft seal cooling drainage system for steam turbine of thermal power plant | |
| CN106949753A (en) | A kind of control method of the changeable vacuum system of Air-cooled Unit full working scope | |
| CN109237460A (en) | A kind of recycle device of oxygen-eliminating device waste steam exhausting | |
| CN209245203U (en) | A kind of retarder of high efficiency and heat radiation | |
| CN108561190B (en) | Shaft seal system of steam turbine | |
| CN209083659U (en) | Pressure is higher than the double mechanical seal rotary jet pump of sealing cavity pressure between sealing | |
| CN206845251U (en) | Afterheat generating system | |
| CN207583448U (en) | A kind of upper steam discharge feed pump turbine cylinder draining system | |
| CN110307041B (en) | Steam sealing device at end part of steam turbine based on centrifugal compression principle | |
| CN208950952U (en) | The sealing system of condensate pump | |
| CN208106506U (en) | A kind of turbine steam seal cooler | |
| CN215761815U (en) | Steam seal steam return system for natural gas waste heat power generation | |
| CN218624340U (en) | Steam turbine shaft seal leakage recovery device | |
| CN111780570A (en) | Air cooling tower anti-freezing system after condensation extraction back reconstruction and working method thereof | |
| CN206609306U (en) | Vaccum-pumping equipment | |
| CN205207178U (en) | Bipolar high -pressure dry -type roots vacuum pump unit | |
| CN210565389U (en) | Water-jet air extractor | |
| CN216588739U (en) | Novel shaft seal cooler for waste heat power generation | |
| CN210799054U (en) | Turbine lubricating oil waterproof device | |
| CN209470551U (en) | A kind of evacuation system for steam condenser | |
| CN204899996U (en) | Condensate water draw -out device of steam turbine power generation unit | |
| CN212867650U (en) | Water inlet system of steam turbine condensate pump | |
| CN114838009B (en) | High-temperature high-pressure pump | |
| CN210564684U (en) | Vacuum sealing structure of steam turbine | |
| CN212467365U (en) | Turbine oil filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |