CN221074582U - Water turbine top cover drainage control system - Google Patents
Water turbine top cover drainage control system Download PDFInfo
- Publication number
- CN221074582U CN221074582U CN202322820508.3U CN202322820508U CN221074582U CN 221074582 U CN221074582 U CN 221074582U CN 202322820508 U CN202322820508 U CN 202322820508U CN 221074582 U CN221074582 U CN 221074582U
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- water
- liquid level
- level sensor
- drainage
- pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 239000007788 liquid Substances 0.000 claims abstract description 101
- 238000009434 installation Methods 0.000 claims abstract description 47
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000005086 pumping Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity 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
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of water turbines, in particular to a water turbine top cover drainage control system; the water-proof device comprises a top cover, a drainage unit, a water-proof cylinder, a water level sensing unit and a control unit, wherein the water-proof cylinder is arranged in a water collecting tank of the top cover, an installation cavity is arranged in the water-proof cylinder, a communication hole communicated with the installation cavity is formed in the surface of the water-proof cylinder, and the communication hole is positioned at one end of the water-proof cylinder, which is close to the bottom wall of the water collecting tank; the water collection in the water collecting tank can enter the installation cavity through the communication hole, and because the water collection in the installation cavity is separated from the accumulated water in the water collecting tank, the fluctuation of the water collection in the water collecting tank can not affect the water collection in the installation cavity too much, the water level sensing unit is installed in the installation cavity, the effective sensing of the actual liquid level depth in the water collecting tank can be realized through sensing the liquid level of the installation cavity, the water draining unit is controlled to start and stop through the control unit, and convenience is provided for the water draining control of the water turbine top cover water draining control system.
Description
Technical Field
The utility model relates to the technical field of water turbines, in particular to a water turbine top cover drainage control system.
Background
In the running process of the hydroelectric generating set, the sealing water leakage amount of the main shaft is large, the water leakage amount of the main shaft can be led into the top cover of the water turbine, and the water collection space of the top cover is small, so that the water collection of the water collection space of the top cover needs to be continuously discharged.
The prior patent with the bulletin number of CN215633486U discloses a unit top cover drainage control system, which is used for a drainage control device of a vertical hydroelectric generating unit top cover and relates to the field of generators, and comprises at least one drainage pump, a liquid level analog sensor, a float switch and a PLC control cabinet, wherein the data signal input end of the PLC control cabinet is respectively connected with the data signal output end of the float switch and the data signal output end of the liquid level analog sensor; the liquid level analog quantity sensor and the float switch contact signals participate in control, when one path of signal is used for controlling the operation of the drainage pump, the other path of signal is blocked, and the other path of signal does not participate in control.
Although ensuring that the liquid level analog quantity sensor and the float switch are mutually independent and do not affect each other, when one path does not work, the other path can be used for realizing water drainage, thereby improving the operation reliability of the top cover water drainage system, but because water collection in the top cover of the unit easily fluctuates, the water level in the top cover is locally deepened or shallowed, so that two paths of liquid level sensing signals of the analog quantity sensor and the float switch have certain deviation from the actual water collection depth in the top cover, and further, the false start or the non-start of the drainage pump is caused, so that the water level in the top cover is too high or the drainage pump idles, and inconvenience is caused to the control work of the drainage control system.
Disclosure of utility model
The utility model aims to overcome the technical defects, and provides a water turbine top cover drainage control system, which solves the technical problems that the water turbine top cover drainage control system in the prior art is difficult to deviate the actual liquid level of the water turbine top cover and inconvenient to the drainage control work of the drainage control system.
In order to achieve the technical purpose, the technical scheme of the utility model provides a water turbine top cover drainage control system, which comprises:
A top cover, wherein a water collecting tank for containing water is arranged in the top cover;
a drainage unit for draining the water collecting tank;
The water-proof cylinder is fixed on the bottom wall of the water collecting tank, an installation cavity is formed in the water-proof cylinder, a communication hole communicated with the installation cavity is formed in the surface of the water-proof cylinder, and the communication hole is located at one end, close to the bottom wall of the water collecting tank, of the water-proof cylinder;
The water level sensing unit is arranged in the mounting cavity and is used for sensing the water level in the mounting cavity;
The control unit is electrically connected with the drainage unit and the water level sensing unit and is used for controlling the start and stop of the drainage unit according to the water level sensed by the water level sensing unit.
Optionally, the drainage unit includes main drain pump and auxiliary drain pump, the water level sensing unit includes low liquid level sensor and high liquid level sensor, low liquid level sensor with high liquid level sensor all is fixed in on the inner wall of installation cavity and with the control unit electricity is connected, high liquid level sensor is located low liquid level sensor's top, when low liquid level sensor sensed the liquid level, the control unit control main drain pump is opened, when high liquid level sensor sensed the liquid level, the control unit control auxiliary drain pump is opened.
Optionally, the water level sensing unit further includes a pump stopping liquid level sensor, the pump stopping liquid level sensor is fixed on the inner wall of the installation cavity and is electrically connected with the control unit, the pump stopping liquid level sensor is located below the low liquid level sensor, and when the liquid level in the installation cavity drops below the pump stopping liquid level sensor, so that the pump stopping liquid level sensor cannot sense the liquid level, the control unit controls the main drainage pump and the auxiliary drainage pump to stop working.
Optionally, the water level sensing unit further includes a limit liquid level sensor, the limit liquid level sensor is fixed on the inner wall of the installation cavity and is electrically connected with the control unit, and the limit liquid level sensor is located the below of stopping the pump liquid level sensor, limit liquid level sensor response is used for responding to the minimum limit liquid level in the installation cavity, when limit liquid level sensor response is not liquid level, the control unit control main drain pump with auxiliary drain pump stop work.
Optionally, the device further comprises an alarm, wherein the alarm is electrically connected with the control unit, and when the high liquid level sensor senses the liquid level, the control unit controls the alarm to alarm.
Optionally, the control unit is provided with a manual start-stop button for controlling start-stop of the main drain pump and the auxiliary drain pump.
Optionally, the drainage unit further includes a drainage header pipe and two drainage branch pipes communicated with the drainage header pipe, the two drainage branch pipes are respectively communicated with the main drainage pump and the auxiliary drainage pump, and check valves are installed on the two drainage branch pipes.
Optionally, the drainage unit further comprises a bypass water pumping pipe and a jet pump, wherein two ends of the bypass water pumping pipe are communicated with the drainage main pipe, and the jet pump is installed on the bypass water pumping pipe and used for assisting water pumping of the main drainage pump and the auxiliary drainage pump.
Optionally, the jet pump further comprises a highest water level sensor, wherein the highest water level sensor is fixed on the side wall of the water collecting tank and is electrically connected with the control unit, the highest water level sensor is located above the high water level sensor, and when the highest water level sensor senses the liquid level, the control unit controls the jet pump to be started.
Optionally, a vent communicated with the installation cavity is arranged at the top of the waterproof cylinder.
Compared with the prior art, the water turbine top cover drainage control system provided by the utility model has the beneficial effects that: by arranging the drainage unit, the water level sensing unit and the control unit and arranging the water-proof cylinder in the water collecting tank of the top cover, the inside of the water-proof cylinder is provided with an installation cavity, the surface of the water-proof cylinder is provided with a communication hole communicated with the installation cavity, and the communication hole is positioned at one end of the water-proof cylinder close to the bottom wall of the water collecting tank; the water collection in the water collecting tank can enter the installation cavity through the communication hole, and because the water collection in the installation cavity is separated from the accumulated water in the water collecting tank, the fluctuation of the water collection in the water collecting tank can not affect the water collection in the installation cavity too much, the water level sensing unit is installed in the installation cavity, the effective sensing of the actual liquid level depth in the water collecting tank can be realized through sensing the liquid level of the installation cavity, the water draining unit is controlled to start and stop through the control unit, and convenience is provided for the water draining control of the water turbine top cover water draining control system.
Drawings
Fig. 1 is a schematic structural diagram of a water turbine top cover drainage control system according to an embodiment of the present utility model.
Wherein, each reference sign in the figure:
10-roof 11-sump 20-drainage unit
21-Main drain pump 22-auxiliary drain pump 23-drain header
24-Root drain branch pipe 25-water suction pipe 26-jet pump
30-Waterproof tube 31-mounting cavity 32-communication hole
33-Vent 34-flange 40-water level sensing unit
41-Low level sensor 42-high level sensor 43-pump stop level sensor
44-Limit level sensor 50-control unit 51-manual start-stop button
60-Alarm 70-highest water level sensor 241-check valve.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model provides a water turbine top cover drainage control system, which comprises a top cover 10, a drainage unit 20, a water-proof cylinder 30, a water level sensing unit 40 and a control unit 50, wherein a water collecting tank 11 for containing water is arranged in the top cover 10; the drainage unit 20 is used for draining the water collecting tank 11; the water-proof cylinder 30 is fixed on the bottom wall of the water collecting tank 11, an installation cavity 31 is arranged in the water-proof cylinder 30, a communication hole 32 communicated with the installation cavity 31 is arranged on the surface of the water-proof cylinder 30, and the communication hole 32 is positioned at one end of the water-proof cylinder 30 close to the bottom wall of the water collecting tank 11; the water level sensing unit 40 is installed in the installation cavity 31 and is used for sensing the water level in the installation cavity 31; the control unit 50 is electrically connected to the drain unit 20 and the water level sensing unit 40, and the control unit 50 is used for controlling the start and stop of the drain unit 20 according to the water level sensed by the water level sensing unit 40.
Specifically, the water turbine top cover drainage control system is characterized in that a drainage unit 20, a water level sensing unit 40 and a control unit 50 are arranged, a water isolation cylinder 30 is arranged in a water collecting tank 11 of a top cover 10, an installation cavity 31 is arranged in the water isolation cylinder 30, a communication hole 32 communicated with the installation cavity 31 is arranged on the surface of the water isolation cylinder 30, and the communication hole 32 is positioned at one end of the water isolation cylinder 30 close to the bottom wall of the water collecting tank 11; the water collection in the water collecting tank 11 can enter the installation cavity 31 through the communication hole 32, and as the water collection in the installation cavity 31 is separated from the accumulated water in the water collecting tank 11, the fluctuation of the water collection in the water collecting tank 11 can not affect the water collection in the installation cavity 31 excessively, the water level sensing unit 40 is installed in the installation cavity 31, the effective sensing of the actual liquid level depth in the water collecting tank 11 can be realized through sensing the liquid level in the installation cavity 31, and the water draining unit 20 is controlled to start and stop by the control unit 50, so that convenience is provided for the drainage control of the water turbine top cover drainage control system.
It will be appreciated that the drain unit 20 may be a single pump or a combination of pumps, or any other device having a pumping function.
In this embodiment, the bottom of the water blocking cylinder 30 is provided with a flange 34, and the water blocking cylinder 30 is detachably connected to the bottom wall of the water collecting tank 11 through the flange 34.
It is understood that the water level sensing unit 40 may be a combination of one or more of capacitive level transmitters, float level sensors, etc. that may sense the liquid level.
In this embodiment, the control unit 50 is an LCU controller.
Optionally, the drain unit 20 includes a main drain pump 21 and an auxiliary drain pump 22, the water level sensing unit 40 includes a low level sensor 41 and a high level sensor 42, the low level sensor 41 and the high level sensor 42 are both fixed on the inner wall of the installation cavity 31 and electrically connected with the control unit 50, the high level sensor 42 is located above the low level sensor 41, when the low level sensor 41 senses the liquid level, the control unit 50 controls the main drain pump 21 to be turned on, and when the high level sensor 42 senses the liquid level, the control unit 50 controls the auxiliary drain pump 22 to be turned on. Specifically, when the water collection in the water collection tank 11 rises to the low level sensor 41, the control unit 50 controls the main drain pump 21 to drain the water collection tank 11, and when the drain efficiency of the main drain pump 21 is insufficient, the control unit 50 controls the auxiliary drain pump 22 to be activated to drain the water collection in the water collection tank 11 together with the main drain pump 21 when the water collection in the water collection tank 11 continues to rise to the high level sensor 42.
It will be appreciated that the main drain pump 21 and the auxiliary drain pump 22 may be stopped when the low level sensor 41 and the high level sensor 42, respectively, do not sense the liquid level, or by providing an additional water level sensor by which sensing of the water level controls the main drain pump 21 and the auxiliary drain pump 22 to stop.
In this embodiment, the water level sensing unit 40 further includes a pump-stop liquid level sensor 43, the pump-stop liquid level sensor 43 is fixed on the inner wall of the installation cavity 31 and electrically connected to the control unit 50, and the pump-stop liquid level sensor 43 is located below the low liquid level sensor 41, and when the liquid level in the installation cavity 31 falls below the pump-stop liquid level sensor 43 so that the pump-stop liquid level sensor 43 cannot sense the liquid level, the control unit 50 controls the main drain pump 21 and the auxiliary drain pump 22 to stop working. With the drainage of the main drain pump 21 and the auxiliary drain pump 22, the liquid level in the water collecting tank 11 will gradually decrease, and when the liquid level in the water collecting tank 11 falls below the pump stopping liquid level sensor 43, the controller simultaneously controls the main drain pump 21 and the auxiliary drain pump 22 to stop draining, so that the efficient drainage of the water collected in the water collecting tank 11 can be ensured, and meanwhile, the phenomenon that the liquid level in the water collecting tank 11 rises again due to the early stopping of the auxiliary drain pump 22 can be effectively avoided, so that the auxiliary drain pump 22 works again in the circulation.
Optionally, the water level sensing unit 40 further includes a limit liquid level sensor 44, the limit liquid level sensor 44 is fixed on the inner wall of the installation cavity 31 and is electrically connected with the control unit 50, the limit liquid level sensor 44 is located below the pump stopping liquid level sensor 43, the limit liquid level sensor 44 senses a minimum limit liquid level in the installation cavity 31, and when the limit liquid level sensor 44 does not sense a liquid level, the control unit 50 controls the main drain pump 21 and the auxiliary drain pump 22 to stop working. Specifically, if the pump-off level sensor 43 is damaged, the main drain pump 21 and the auxiliary drain pump 22 cannot be stopped by the control of the pump-off level sensor 43, the liquid level in the water collection tank 11 further drops to the limit level sensor 44, and the main drain pump 21 and the auxiliary drain pump 22 stop operating by the sensing of the liquid level by the limit level sensor 44, so that the main drain pump 21 and the auxiliary drain pump 22 are prevented from idling.
In this example, the pump-down level sensor 43, the limit level sensor 44, the low level sensor 41, and the high level sensor 42 are all float level sensors.
Optionally, an alarm 60 is further included, the alarm 60 is electrically connected to the control unit 50, and when the high liquid level sensor 42 senses the liquid level, the control unit 50 controls the alarm 60 to alarm. Specifically, the staff can be reminded of taking precautionary measures through an alarm effect.
Alternatively, the control unit 50 is provided with a manual start-stop button 51, and the manual start-stop button 51 is used to control the start-stop of the main drain pump 21 and the auxiliary drain pump 22. Specifically, the manual start-stop button 51 may manually control the start-stop of the main drain pump 21 and the auxiliary drain pump 22 when the water level sensing unit 40 is damaged.
In this instance, the control unit 50 is provided with a main drain pump 21 start-stop control button and an auxiliary drain pump 22 start-stop control button, and can control the main drain pump 21 and the auxiliary drain pump 22, respectively.
Optionally, the drain unit 20 further includes a drain main 23 and two drain branches 24 communicating with the drain main 23, the two drain branches communicating with the main drain pump 21 and the auxiliary drain pump 22, respectively, and check valves 241 are installed on the two drain branches. Specifically, the arrangement of the drain header 23 and the two drain branches 24 can facilitate the drainage of the water collection, and the check valve 241 prevents the water collection from flowing back.
Optionally, the drain unit 20 further includes a bypass drain pipe 25 and a jet pump 26, both ends of the bypass drain pipe 25 are communicated with the drain manifold 23, and the jet pump 26 is mounted on the bypass drain pipe 25 for assisting the pumping of the main drain pump 21 and the auxiliary drain pump 22. In particular, the jet pump 26 may effectively improve the pumping efficiency of the main drain pump 21 and the auxiliary drain pump 22.
It will be appreciated that the jet pump 26 may be turned on when the main drain pump 21 is operated, or may be turned on when the main drain pump 21 and the auxiliary drain pump 22 are operated simultaneously.
Optionally, a highest water level sensor 70 is further included, the highest water level sensor 70 is fixed on the side wall of the water collecting tank 11 and is electrically connected with the control unit 50, and the highest water level sensor 70 is located above the high water level sensor 42, and when the highest water level sensor 70 senses the liquid level, the control unit 50 controls the jet pump 26 to be turned on. Specifically, with the above arrangement, when the main drain pump 21 and the auxiliary drain pump 22 are operated at the same time and the liquid level in the water collecting chamber cannot be lowered significantly, the jet pump 26 is turned on to accelerate the water pumping efficiency of the main drain pump 21 and the auxiliary drain pump 22.
In this example, the highest water level sensor 70 is a liquid level probe.
Optionally, the top of the riser 30 is provided with a vent 33 in communication with the mounting cavity 31. Specifically, the vent 33 balances the air pressure in the installation cavity 31 with the external air pressure, preventing the water collected in the water collecting tank 11 from being unable to enter the installation cavity 31.
The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any other corresponding changes and modifications made in accordance with the technical idea of the present utility model shall be included in the scope of the claims of the present utility model.
Claims (10)
1. A water turbine top cover drainage control system is characterized by comprising
A top cover, wherein a water collecting tank for containing water is arranged in the top cover;
a drainage unit for draining the water collecting tank;
The water-proof cylinder is fixed on the bottom wall of the water collecting tank, an installation cavity is formed in the water-proof cylinder, a communication hole communicated with the installation cavity is formed in the surface of the water-proof cylinder, and the communication hole is located at one end, close to the bottom wall of the water collecting tank, of the water-proof cylinder;
The water level sensing unit is arranged in the mounting cavity and is used for sensing the water level in the mounting cavity;
The control unit is electrically connected with the drainage unit and the water level sensing unit and is used for controlling the start and stop of the drainage unit according to the water level sensed by the water level sensing unit.
2. The water turbine top cover drainage control system of claim 1, wherein the drainage unit comprises a main drainage pump and an auxiliary drainage pump, the water level sensing unit comprises a low liquid level sensor and a high liquid level sensor, the low liquid level sensor and the high liquid level sensor are both fixed on the inner wall of the installation cavity and are electrically connected with the control unit, the high liquid level sensor is located above the low liquid level sensor, when the low liquid level sensor senses the liquid level, the control unit controls the main drainage pump to be started, and when the high liquid level sensor senses the liquid level, the control unit controls the auxiliary drainage pump to be started.
3. The water turbine top cover drainage control system of claim 2, wherein the water level sensing unit further comprises a pump stopping liquid level sensor, the pump stopping liquid level sensor is fixed on the inner wall of the installation cavity and is electrically connected with the control unit, the pump stopping liquid level sensor is located below the low liquid level sensor, and the control unit controls the main drainage pump and the auxiliary drainage pump to stop working when the liquid level in the installation cavity falls below the pump stopping liquid level sensor so that the pump stopping liquid level sensor cannot sense the liquid level.
4. The water turbine top cover drainage control system of claim 3, wherein the water level sensing unit further comprises a limit liquid level sensor, the limit liquid level sensor is fixed on the inner wall of the installation cavity and is electrically connected with the control unit, the limit liquid level sensor is located below the pump stopping liquid level sensor, the limit liquid level sensor senses the lowest limit liquid level in the installation cavity, and when the limit liquid level sensor senses no liquid level, the control unit controls the main drainage pump and the auxiliary drainage pump to stop working.
5. The water turbine top cover drainage control system of claim 2, further comprising an alarm, wherein the alarm is electrically connected to the control unit, and wherein the control unit controls the alarm to alarm when the high liquid level sensor senses the liquid level.
6. The water turbine head drain control system of claim 2, wherein the control unit is provided with a manual start-stop button for controlling start-stop of the main drain pump and the auxiliary drain pump.
7. The water turbine top cover drain control system of claim 2, wherein the drain unit further comprises a drain header and two drain branches in communication with the drain header, the two drain branches in communication with the main drain pump and the auxiliary drain pump, respectively, and check valves are mounted on the two drain branches.
8. The water turbine head cover drainage control system of claim 7 wherein the drainage unit further comprises a bypass suction pipe and a jet pump, both ends of the bypass suction pipe being in communication with the drainage manifold, the jet pump being mounted on the bypass suction pipe for assisting in the pumping of the primary and auxiliary drainage pumps.
9. The water turbine top cover drainage control system of claim 8, further comprising a highest water level sensor, wherein the highest water level sensor is fixed on the side wall of the water collecting tank and is electrically connected with the control unit, and the highest water level sensor is located above the high water level sensor, and when the highest water level sensor senses the liquid level, the control unit controls the jet pump to be started.
10. The water turbine roof drainage control system of any one of claims 1 to 9 wherein a vent is provided in the top of the riser in communication with the mounting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322820508.3U CN221074582U (en) | 2023-10-19 | 2023-10-19 | Water turbine top cover drainage control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322820508.3U CN221074582U (en) | 2023-10-19 | 2023-10-19 | Water turbine top cover drainage control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074582U true CN221074582U (en) | 2024-06-04 |
Family
ID=91257613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322820508.3U Active CN221074582U (en) | 2023-10-19 | 2023-10-19 | Water turbine top cover drainage control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074582U (en) |
-
2023
- 2023-10-19 CN CN202322820508.3U patent/CN221074582U/en active Active
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