CN215805094U - Intelligent water pump control device based on PLC - Google Patents
Intelligent water pump control device based on PLC Download PDFInfo
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- CN215805094U CN215805094U CN202120546646.5U CN202120546646U CN215805094U CN 215805094 U CN215805094 U CN 215805094U CN 202120546646 U CN202120546646 U CN 202120546646U CN 215805094 U CN215805094 U CN 215805094U
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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
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Abstract
The utility model discloses an intelligent water pump control device based on a PLC, which is characterized in that: the system comprises at least one set of drainage system and a PLC (programmable logic controller), wherein each set of drainage system comprises a flowmeter and a water pump, the flowmeter is used for measuring the flow of the water pump when pumping water, and the PLC is electrically connected with the flowmeter and the water pump; the intelligent water pump control device based on the PLC can detect the water pumping efficiency of the water pump, can give an alarm in situ when the water pump efficiency is low, and can automatically start a standby water pump to pump water when the water pumping efficiency of one water pump is low, so as to effectively drain water leakage on the top cover of the water turbine in time; in addition, the drainage pump and the liquid level meter are provided with redundant designs, and when one drainage pump or one liquid level meter is in fault, the other drainage pump or one liquid level meter can be started to operate in time, so that the operation reliability of the system is higher.
Description
Technical Field
The utility model belongs to the technical field of control, and particularly relates to an intelligent water pump control device based on a PLC.
Background
The hydraulic generator is a generator which takes a hydraulic turbine as a prime mover to convert water energy into electric energy. When water flows through the water turbine, water energy is converted into mechanical energy, and a rotating shaft of the water turbine drives a rotor of the generator to convert the mechanical energy into electric energy for output. The top cover is one of main components of the water turbine and is one of the components of the water guide system of the water turbine. It forms a water flow path with the bottom ring and forms a sealing structure with the bottom ring and the guide vane. The top cover also has the main functions of supporting the main shaft and the guide vanes. The main shaft penetrates through the top cover and is fixed in the top cover, and the main shaft is sealed by the sealing ring. However, the main shaft is a rotating part, and the operating characteristic that the main shaft cannot be completely sealed indicates that water inevitably leaks into the top cover from the main shaft when the hydraulic turbine unit is in an operating state. In addition, in the case of long-term operation of the unit or ageing of the sealing device, the water leakage will increase considerably. If the water leakage can not be discharged in time, a large amount of accumulated water can be formed to submerge the bearing, the normal operation of the hydraulic turbine unit is influenced, and finally the unit is forced to stop operation. Obviously, the drainage of the top cover of the hydraulic turbine unit is a problem which must be faced by the hydraulic power plant, and is also one of important factors influencing whether the hydraulic turbine unit can safely operate. The patent of the utility model discloses an improved generation top cap drainage system, application number: 201821617619.7, the improved top cover drainage system comprises a base, a water turbine is installed in the middle of the base, an impeller is arranged in the water turbine, a water guide cover is arranged outside the impeller, one end of the water guide cover is connected with the bottom end of a pressure water pipe, the top end of the pressure water pipe is communicated with an upper water supply, a nozzle is fixedly connected with the connection port of the pressure water pipe and the water guide cover, a water valve switch is installed on one side of the nozzle, a generator is arranged right above the water turbine, a top cover is arranged between the generator and the water turbine, fixing frames are symmetrically arranged on the two sides of the top cover through bolts, a drainage pump is installed in the middle of the fixing frames, a drainage pipe is arranged on the inner side of the top cover, and a fixing block is welded above the drainage pipe, however, the method cannot calculate the water pumping efficiency of the water pump due to water leakage of the top cover, and inevitably causes the water pumping efficiency of the water pump to be reduced due to the fact that the water pump continuously increases along with the total working time, and the water pump is inevitably worn, blocked by a pipeline and other faults, and the water quantity of the top cover of the water turbine cannot be discharged in time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the water pump cannot be identified when the water pumping efficiency is low, and provides an intelligent water pump control device based on a PLC (programmable logic controller), which is used for effectively identifying whether the water pumping efficiency of the water pump is normal or not.
The utility model is realized by adopting the following technical scheme: the utility model provides an intelligence water pump control device based on PLC, includes at least one set of drainage system and PLC, and every set of drainage system includes flowmeter and water pump, the flowmeter is used for measuring the flow when the water pump draws water, PLC all with flowmeter and water pump electricity are connected.
Further, above-mentioned intelligent water pump control device based on PLC still includes the hydraulic turbine, and the hydraulic turbine includes the top cap, drainage system connects the top cap for discharge the water on the top cap.
Furthermore, each set of drainage system also comprises a liquid level meter which is electrically connected with the PLC and is used for measuring the water level on the top cover.
Preferably, there are at least two sets of drainage systems.
Preferably, the liquid level meter is a magnetic turn-over plate liquid level meter.
Further, above-mentioned intelligent water pump control device based on PLC still includes the touch-sensitive screen, the touch-sensitive screen with PLC electricity is connected.
Further, above-mentioned intelligent water pump control device based on PLC still includes audible-visual annunciator, audible-visual annunciator with the PLC electricity is connected.
The utility model has the beneficial effects that:
1. the intelligent water pump control device based on the PLC can detect the water pumping efficiency of the water pump, can give an alarm in situ when the water pump efficiency is low, and can automatically start a standby water pump to pump water when the water pumping efficiency of one water pump is low, so that water leakage on the top cover of the water turbine can be effectively drained in time.
2. The intelligent water pump control device based on the PLC can automatically start drainage and prevent the problem that the water quantity of the top cover cannot be drained in time.
3. The intelligent water pump control device based on the PLC is high in reliability, the drainage pumps and the liquid level meters are designed in a redundant mode, when one drainage pump or one liquid level meter fails, the other drainage pump or the other liquid level meter can be started to operate in time, and therefore the system is high in operation reliability.
4. The intelligent water pump control device based on the PLC can effectively control the starting and the closing of the water pump according to the change of the water level, and can timely close the water pump when the liquid level is too low, so that the water pump cannot enter an underload running state, and the phenomenon of wasting electric energy is effectively reduced.
Drawings
FIG. 1 is a schematic circuit block diagram of a first intelligent water pump control device based on a PLC
FIG. 2 is a schematic circuit block diagram of a second PLC-based intelligent water pump control device
FIG. 3 is a schematic view of the connection of the first water turbine top cover drainage system
FIG. 4 is a schematic view of the connection of the top cover drainage system of the second water turbine
Reference numerals: 1-water turbine, 11-main shaft, 12-control ring, 13-top cover, 14-guide vane, 21-first water pump, 22-second water pump, 31-first flowmeter, 31-second flowmeter, 41-first liquid level meter and 42-second liquid level meter.
Detailed Description
The utility model is further illustrated by the following examples, which are not to be construed as limiting the utility model thereto. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.
Example 1
As shown in fig. 1 and fig. 3, an intelligent water pump control device based on PLC includes a set of drainage system and PLC, the drainage system includes first flowmeter 31 and first water pump 21, PLC all with first flowmeter 31 and first water pump 21 are connected, because the efficiency of drawing water reduces because the water pump service life leads to the efficiency of drawing water for a long time, its exhaust water flow also can reduce, through the first flowmeter 31 measure the flow per second when first water pump 21 draws water, can judge the efficiency of first water pump 21, can also judge the water leakage of top cap through calculating the water yield that the top cap discharged in addition, in this embodiment, first flowmeter 31 locates the exit end of first water pump 21.
Further, above-mentioned intelligent water pump control device based on PLC still includes hydraulic turbine 1, and hydraulic turbine 1 includes top cap 13, and above-mentioned drainage system connects top cap 13, and first water pump 21 is connected top cap 13 upper end promptly for discharge the water on the top cap 13.
In order to measure whether the water level above the water turbine top cover 13 is high or low conveniently, a first liquid level meter 41 is added into the drainage system and arranged above the water turbine top cover 13, the first liquid level meter 41 is electrically connected with the PLC and used for measuring the water level on the top cover 13, the first liquid level meter 41 is a magnetic turning plate type liquid level meter, the magnetic turning plate type liquid level meter is selected because the magnetic turning plate type liquid level meter is good in sealing and vibration resistance, high in reliability and capable of adapting to operation under the condition of large liquid level fluctuation, and influences of the liquid level fluctuation can be greatly reduced when the water pump is started and stopped.
When the efficiency of the first water pump 21 is low, the on-site alarm is realized, and an audible and visual alarm is added and is electrically connected with the PLC.
In addition, the inventor also adds a touch screen which is electrically connected with the PLC so as to conveniently carry out manual interaction with the PLC on site.
The working principle is as follows:
when the water level of top cap 13 is measured to first level gauge 41 is higher, with water level signal transmission PLC, PLC control water pump starts the drainage function that realizes the hydraulic turbine top cap, when the flow greatly reduced that every second of first flow meter 31 measurement water pump was clapped out, explain first water pump 21's efficiency ratio this moment is lower, reach the danger value, in time maintain through warning notice staff in situ, the sight of just maintaining after having avoided first water pump 21 to break down, the reliability of 1 drainage system of hydraulic turbine has been improved, can in time close the water pump when the liquid level is low excessively, make the water pump can not get into the state of underload operation, effectively reduce the phenomenon of wasting the electric energy.
Example 2
As shown in fig. 2 and 4, an intelligent water pump control device based on a PLC includes two sets of drainage systems and a PLC, the two sets of drainage systems are a first drainage system and a second drainage system, wherein the first drainage system includes a first flow meter 31 and a first water pump 21, the PLC is electrically connected to the first flow meter 31 and the first water pump 21, the second drainage system includes a second flow meter 32 and a second water pump 22, the PLC is electrically connected to the second flow meter 32 and the second water pump 22, the water pumping efficiency is reduced due to the long service life of the water pump, the efficiency of the first water pump 21 and the efficiency of the second water pump 22 can be determined by measuring the flow rate of the first water pump 21 when pumping water and the flow rate of the second water pump 22 when pumping water through the first flow meter 31, in this embodiment, the first flow meter 31 is disposed at the outlet end of the first water pump 21, a second flow meter 32 is provided at the outlet end of the second water pump 22.
Further, above-mentioned intelligent water pump control device based on PLC still includes hydraulic turbine 1, and hydraulic turbine 1 includes top cap 13, and above-mentioned drainage system connects top cap 13, and first water pump 21 and second all connect top cap 13 upper end promptly for discharge the water on the top cap 13.
In order to measure whether the water level above the water turbine top cover 13 is high or low conveniently, a first liquid level meter 41 is added into the first drainage system and is arranged above the water turbine top cover 13, a second liquid level meter 42 is added into the second drainage system and is arranged above the water turbine top cover 13, the first level gauge 41 and the second level gauge 42 are both electrically connected to the PLC and are used to measure the water level on the top cover 13, the first level gauge 41 and the second level gauge 42 are both magnetic flip-flop type level gauges, which are selected because of good sealing and vibration resistance, high reliability, and adaptability to operation under the condition of large level fluctuation, the influence of liquid level fluctuation can be greatly reduced when the water pump is started and stopped, and by adding two liquid level meters, when one of the liquid level meters breaks down, the other liquid level meter can also work normally, and the reliability of water level measurement is ensured.
When the efficiency of the first water pump 21 or the second water pump 22 is low, in order to realize local alarm, an audible and visual alarm is added, and the audible and visual alarm is electrically connected with the PLC. In addition, the inventor also adds a touch screen which is electrically connected with the PLC, so that manual interaction with the PLC can be conveniently carried out on site.
The working principle is as follows:
when the first liquid level meter 41 or the second liquid level meter 42 measures the water level of the top cover 13 to be high, the water level signal is transmitted to the PLC, the PLC controls the first water pump 21 or the second water pump 22 to be started, the water discharging function of the water turbine top cover 13 is realized, when the first flow meter 31 or the second flow meter 32 measures the corresponding water pump to pass through the flow greatly reduced every second, the efficiency of the first water pump 21 or the second water pump 22 is lower at the moment, a dangerous value is reached, the situation that the first water pump 21 is maintained after being broken down is avoided through on-site alarming in time, the reliability of the water discharging system of the water turbine 1 is improved, meanwhile, if the PLC detects that the efficiency of the first water pump 21 is lower, the PLC can also start the second water pump 22 to work in time, so that the water on the water turbine top cover 13 is discharged with high reliability. The intelligent water pump control device based on the PLC can automatically start drainage, and prevent the problem that the water quantity of a top cover cannot be drained in time; meanwhile, the drainage pumps and the liquid level meters are provided with redundant designs, when one drainage pump or one liquid level meter has a fault, the other drainage pump or the other liquid level meter can be started to operate in time, so that the operation reliability of the system is higher; in addition, the liquid level can in time close the water pump when crossing excessively for the water pump can not get into the state of underload operation, effectively reduces the phenomenon of wasting the electric energy.
In the description of the present invention, it is to be understood that the terms "above," "outlet end," "one end," "two ends," and the like are used in the positional or orientational relationships shown in the drawings to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (7)
1. The utility model provides an intelligence water pump control device based on PLC which characterized in that: the system comprises at least one set of drainage system and a PLC (programmable logic controller), wherein each set of drainage system comprises a flowmeter and a water pump, the flowmeter is used for measuring the flow of the water pump when pumping water, and the PLC is electrically connected with the flowmeter and the water pump.
2. The intelligent water pump control device based on PLC of claim 1, characterized in that: the water turbine comprises a top cover, and the drainage system is connected with the top cover and used for discharging water on the top cover.
3. The intelligent water pump control device based on PLC of claim 2, characterized in that: each set of drainage system also comprises a liquid level meter, wherein the liquid level meter is electrically connected with the PLC and is used for measuring the water level on the top cover.
4. The intelligent PLC-based water pump control device according to claim 1 or 2, wherein: at least two sets of drainage systems are provided.
5. The PLC-based intelligent water pump control device according to claim 3, wherein: the liquid level meter is a magnetic turning plate liquid level meter.
6. The intelligent PLC-based water pump control device according to claim 1 or 2, wherein: the PLC is characterized by further comprising a touch screen, and the touch screen is electrically connected with the PLC.
7. The intelligent PLC-based water pump control device according to claim 1 or 2, wherein: the PLC is electrically connected with the sound-light alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120546646.5U CN215805094U (en) | 2021-03-17 | 2021-03-17 | Intelligent water pump control device based on PLC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120546646.5U CN215805094U (en) | 2021-03-17 | 2021-03-17 | Intelligent water pump control device based on PLC |
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| CN215805094U true CN215805094U (en) | 2022-02-11 |
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| CN202120546646.5U Active CN215805094U (en) | 2021-03-17 | 2021-03-17 | Intelligent water pump control device based on PLC |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653885A (en) * | 2022-04-02 | 2023-01-31 | 华能澜沧江水电股份有限公司 | Method for remotely judging reduction of working efficiency of top cover drainage pump in real time |
| CN115898736A (en) * | 2022-08-03 | 2023-04-04 | 华能澜沧江水电股份有限公司 | Fault detection method and system for water turbine top cover drainage system |
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2021
- 2021-03-17 CN CN202120546646.5U patent/CN215805094U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653885A (en) * | 2022-04-02 | 2023-01-31 | 华能澜沧江水电股份有限公司 | Method for remotely judging reduction of working efficiency of top cover drainage pump in real time |
| CN115898736A (en) * | 2022-08-03 | 2023-04-04 | 华能澜沧江水电股份有限公司 | Fault detection method and system for water turbine top cover drainage system |
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