CN117588422A - Pump in pipe protection control method and equipment - Google Patents
Pump in pipe protection control method and equipment Download PDFInfo
- Publication number
- CN117588422A CN117588422A CN202311744664.4A CN202311744664A CN117588422A CN 117588422 A CN117588422 A CN 117588422A CN 202311744664 A CN202311744664 A CN 202311744664A CN 117588422 A CN117588422 A CN 117588422A
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- China
- Prior art keywords
- pump
- water level
- pipe
- frequency converter
- value
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
- F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
- F04D15/0263—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump the condition being temperature, ingress of humidity or leakage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides a protection control method and equipment for a pump in a pipe, wherein the pump in the pipe is arranged in a water conveying pipeline, a frequency converter is used for controlling the operation of the pump in the pipe, a water level sensor is used for acquiring a water level value of the water conveying pipeline, and a temperature sensor is used for acquiring a temperature value of the pump in the pipe; acquiring a water level value of the water level sensor and a temperature value of the temperature sensor in real time, and transmitting the water level value and the temperature value to the frequency converter; when at least one of the water level value or the temperature value meets the condition, the running state of the pump in the outlet pipe is judged, so that the frequency converter performs start-stop control on the pump in the pipe, the use safety of the water pump is greatly improved, and the service life of the water pump is prolonged to the maximum limit.
Description
Technical Field
The invention relates to the technical field of pump in a pipe control, in particular to a method and equipment for protecting and controlling the pump in the pipe.
Background
Along with the increasing wide application of deep well pumps, the deep well pumps are not only applied to deep well pumping, but also widely applied to pump water supply systems in pipes, and the traditional pump water supply systems in pipes lack of effective control on water shortage of the water pumps at the use sites, so that a plurality of inconveniences are brought to the operation and maintenance of the system. The water pump still continues to run under the condition of locked rotor and the like, and damage to the water pump can be caused. There is therefore a need for a method and apparatus for pump protection control in a pipe.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method and equipment for protecting and controlling a pump in a pipe.
In order to achieve the above object, in one aspect, the present invention provides a pump-in-tube protection control method, which is applied to a pump-in-tube water supply system, wherein the pump-in-tube water supply system comprises a frequency converter, a pump-in-tube, a water level sensor, a temperature sensor and a water pipe, the pump-in-tube is arranged in the water pipe, the frequency converter is used for controlling the operation of the pump-in-tube, the water level sensor is used for obtaining a water level value of the water pipe, and the temperature sensor is used for obtaining a temperature value of the pump-in-tube; the pump-in-pipe protection control method comprises the following steps:
acquiring a water level value of the water level sensor and a temperature value of the temperature sensor in real time, and transmitting the water level value and the temperature value to the frequency converter;
and when at least one of the water level value or the temperature value meets the condition, the frequency converter controls the start and stop of the pump in the pipe.
Further, when at least one of the water level value or the temperature value meets a condition, the frequency converter performs start-stop control on the pump in the pipe, including: when the water level value is smaller than a first water level threshold value, the frequency converter controls the pump in the pipe to stop running, and continuously acquires the water level value in real time; when the water level value is greater than or equal to a second water level threshold value and the water level value does not drop in a preset time period, the frequency converter controls the pump in the pipe to start; and if the water level value is smaller than a second water level threshold value, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server.
Further, the first water level threshold is greater than the second water level threshold. By setting different water level thresholds, the situations of false alarm and the like caused by air and other factors in the water delivery pipeline when the water level fluctuates are avoided.
Further, when at least one of the water level value or the temperature value meets a condition, the frequency converter performs start-stop control on the pump in the pipe, including: and when the temperature value is greater than a first temperature threshold value, the frequency converter controls the pump in the pipe to stop running.
Further, when at least one of the water level value or the temperature value meets a condition, the frequency converter performs start-stop control on the pump in the pipe, including: when the temperature value is greater than a first temperature threshold value, the frequency converter acquires the water level value, and if the water level value is the maximum water level value, the frequency converter controls the pump in the pipe to stop running and sends a fault alarm to the background server.
Further, if the water level value is smaller than the maximum water level value, the water level value is obtained in real time and compared with a first water level threshold, and when the water level value is smaller than the first water level threshold, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server.
Further, the frequency converter is also used for acquiring the running current of the pump in the pipe.
Further, when the running current is smaller than or equal to a first current threshold value, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server; the first current threshold is an idle current of the pump in the tube.
Further, when the running current is greater than or equal to a second current threshold value, the frequency converter controls the pump in the pipe to stop running and sends a fault alarm of the pump in the pipe to a background server; the second current threshold is a locked rotor current of the pump in the tube.
In addition, to achieve the above object, the present invention also provides an in-pipe pump protection control apparatus comprising: the system comprises a memory, a processor and a control program of the pump-in-pipe protection control device, wherein the control program of the pump-in-pipe protection control device is stored on the memory and can run on the processor, and the control program of the pump-in-pipe protection control device is configured to realize the steps of the pump-in-pipe protection control method.
Compared with the prior art, the invention has the following beneficial effects:
the frequency converter controls the operation of the water pump according to the water level value in the water pipe, the temperature value of the pump in the pipe and the operation current of the pump in the pipe, so that the intelligent control and the management of the water pump are realized, the use safety of the water pump is greatly improved, and the service life of the water pump is prolonged to the maximum limit; by setting different water level thresholds, the situations of false alarm and the like when the water level in the water delivery pipeline fluctuates due to factors such as air and the like are avoided; the invention can judge whether the rotor is blocked or not by running the current and the temperature value, thereby providing fault information for a user and eliminating the fault in time.
Drawings
FIG. 1 is a schematic diagram of an in-line pump water supply system;
fig. 2 is a flow chart of a method of pump protection control in a pipe.
Detailed Description
The present invention will be described in further detail with reference to the preferred embodiments and the accompanying drawings. It is apparent that the examples described below are only for explaining the present invention, not limiting the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the present invention provides a pump-in-tube protection control method, which is applied to a pump-in-tube water supply system, wherein the pump-in-tube water supply system comprises a frequency converter, a pump-in-tube, a water level sensor, a temperature sensor and a water pipe, the pump-in-tube is arranged in the water pipe, the frequency converter is used for controlling the pump-in-tube to operate, the water level sensor is used for obtaining a water level value of the water pipe, and the temperature sensor is used for obtaining a temperature value of the pump-in-tube; the pump-in-pipe protection control method comprises the following steps:
acquiring a water level value of the water level sensor and a temperature value of the temperature sensor in real time, and transmitting the water level value and the temperature value to the frequency converter;
and when at least one of the water level value or the temperature value meets the condition, the frequency converter controls the start and stop of the pump in the pipe.
It should be understood that the frequency converter in the pump water supply system in the pipe is a special frequency converter for the water pump, can realize the effective control of the pump in the pipe, can realize the collection of various data such as pipeline water level, water temperature and water pump motor current, and the like, and monitors the water level of the water pipeline and the running current condition of the water pump in real time.
Further, when at least one of the water level value or the temperature value meets a condition, the frequency converter performs start-stop control on the pump in the pipe, including: when the water level value is smaller than a first water level threshold value, the frequency converter controls the pump in the pipe to stop running, and continuously acquires the water level value in real time; when the water level value is greater than or equal to a second water level threshold value and the water level value does not drop in a preset time period, the frequency converter controls the pump in the pipe to start; and if the water level value is smaller than a second water level threshold value, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server.
Further, the first water level threshold is greater than the second water level threshold. By setting different water level thresholds, the situations of false alarm and the like caused by air and other factors in the water delivery pipeline when the water level fluctuates are avoided.
The water level sensor can convert the water level condition into a switching signal and output the switching signal to the switching value input port of the frequency converter, the frequency converter judges the water level condition in the pipeline according to the feedback signal of the water level sensor, and when water shortage is detected, the frequency converter cuts off the output, stops the operation of the water pump, avoids the operation of the water shortage of the water pump and prevents the damage of the water pump.
Further, when at least one of the water level value or the temperature value meets a condition, the frequency converter performs start-stop control on the pump in the pipe, including: and when the temperature value is greater than a first temperature threshold value, the frequency converter controls the pump in the pipe to stop running.
The temperature sensor monitors the temperature of the pump in the tube in real time and outputs an analog signal to an analog input port of the frequency converter. The deep-well pump motor in the pump in the pipe removes heat through the water flow in the pipeline, when the water pump is running, the water in the pipeline does not flow (the deep-well pump impeller lacks water, the water pump cannot beat water), the heat generated by the motor cannot be taken away, the temperature of the water pump rises, when the temperature of the water pump frequency converter is monitored to exceed a set value, the special frequency converter of the water pump cuts off the output, the water pump is stopped from running, the water pump is prevented from being burnt due to overhigh temperature, and the water pump is prevented from being damaged.
Further, when at least one of the water level value or the temperature value meets a condition, the frequency converter performs start-stop control on the pump in the pipe, including: when the temperature value is greater than a first temperature threshold value, the frequency converter acquires the water level value, and if the water level value is the maximum water level value, the frequency converter controls the pump in the pipe to stop running and sends a fault alarm to the background server.
Further, if the water level value is smaller than the maximum water level value, the water level value is obtained in real time and compared with a first water level threshold, and when the water level value is smaller than the first water level threshold, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server.
Further, the frequency converter is also used for acquiring the running current of the pump in the pipe.
When the special frequency converter for the water pump drives the water pump to operate, the operation current is monitored in real time, the water pump is in idle running before being put into use, the idle running current is detected, the idle current is recorded, and 120% of the current of the idle current is used as the reference current for water-shortage operation of the water pump; when the water pump runs out of water, which corresponds to no-load running, the running current is generally close to no-load current. Therefore, in the running process of the system, when the frequency converter runs at full frequency and the detected current value is below the reference current for water shortage running, the deep well pump is judged to be in the water shortage running, and the frequency converter special for the water pump cuts off the output at the moment, so that the water pump is prevented from running in the water shortage, and the water pump is prevented from being damaged.
Further, when the running current is smaller than or equal to a first current threshold value, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server; the first current threshold is an idle current of the pump in the tube.
Further, when the running current is greater than or equal to a second current threshold value, the frequency converter controls the pump in the pipe to stop running and sends a fault alarm of the pump in the pipe to a background server; the second current threshold is a locked rotor current of the pump in the tube.
In addition, to achieve the above object, the present invention also provides an in-pipe pump protection control apparatus comprising: the system comprises a memory, a processor and a control program of the pump-in-pipe protection control device, wherein the control program of the pump-in-pipe protection control device is stored on the memory and can run on the processor, and the control program of the pump-in-pipe protection control device is configured to realize the steps of the pump-in-pipe protection control method.
It should be noted that, for the sake of simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the present invention is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present invention. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The in-pipe pump protection control method is characterized by being applied to an in-pipe pump water supply system, wherein the in-pipe pump water supply system comprises a frequency converter, an in-pipe pump, a water level sensor, a temperature sensor and a water pipeline, the in-pipe pump is arranged in the water pipeline, the frequency converter is used for controlling the operation of the in-pipe pump, the water level sensor is used for obtaining a water level value of the water pipeline, and the temperature sensor is used for obtaining a temperature value of the in-pipe pump; the pump-in-pipe protection control method comprises the following steps:
acquiring a water level value of the water level sensor and a temperature value of the temperature sensor in real time, and transmitting the water level value and the temperature value to the frequency converter;
and when at least one of the water level value or the temperature value meets the condition, the frequency converter controls the start and stop of the pump in the pipe.
2. The method of claim 1, wherein said frequency converter controlling start-stop of said pump-in-pipe when at least one of said water level value or said temperature value satisfies a condition, comprising: when the water level value is smaller than a first water level threshold value, the frequency converter controls the pump in the pipe to stop running, and continuously acquires the water level value in real time; when the water level value is greater than or equal to a second water level threshold value and the water level value does not drop in a preset time period, the frequency converter controls the pump in the pipe to start; and if the water level value is smaller than a second water level threshold value, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server.
3. A pump-in-tube protection control method as set forth in claim 2, wherein said first water level threshold is greater than said second water level threshold.
4. The method of claim 1, wherein said frequency converter controlling start-stop of said pump-in-pipe when at least one of said water level value or said temperature value satisfies a condition, comprising: and when the temperature value is greater than a first temperature threshold value, the frequency converter controls the pump in the pipe to stop running.
5. The method of claim 1, wherein said frequency converter controlling start-stop of said pump-in-pipe when at least one of said water level value or said temperature value satisfies a condition, comprising: when the temperature value is greater than a first temperature threshold value, the frequency converter acquires the water level value, and if the water level value is the maximum water level value, the frequency converter controls the pump in the pipe to stop running and sends a fault alarm to the background server.
6. The method of claim 5, wherein if the water level is less than a maximum water level, the water level is obtained in real time and compared with a first water level threshold, and when the water level is less than the first water level threshold, the frequency converter controls the pump in the pipe to stop running and sends a water shortage alarm to a background server.
7. A pump-in-tube protection control method as set forth in claim 1, wherein said frequency converter is further configured to obtain an operating current of said pump-in-tube.
8. The method for protecting and controlling the pump in pipe according to claim 7, wherein when the operation current is less than or equal to a first current threshold value, the frequency converter controls the pump in pipe to stop operating and sends a water shortage alarm to a background server; the first current threshold is an idle current of the pump in the tube.
9. The pump-in-tube protection control method according to claim 7, wherein when the operation current is equal to or greater than a second current threshold, the frequency converter controls the pump-in-tube to stop operating and sends a failure alarm of the pump-in-tube to a background server; the second current threshold is a locked rotor current of the pump in the tube.
10. An in-line pump protection control apparatus, the apparatus comprising: memory, a processor and a control program of an in-pipe pump protection control device stored on the memory and executable on the processor, the control program of the in-pipe pump protection control device being configured to implement the steps of the in-pipe pump protection control method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744664.4A CN117588422A (en) | 2023-12-19 | 2023-12-19 | Pump in pipe protection control method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744664.4A CN117588422A (en) | 2023-12-19 | 2023-12-19 | Pump in pipe protection control method and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117588422A true CN117588422A (en) | 2024-02-23 |
Family
ID=89920120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311744664.4A Pending CN117588422A (en) | 2023-12-19 | 2023-12-19 | Pump in pipe protection control method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117588422A (en) |
-
2023
- 2023-12-19 CN CN202311744664.4A patent/CN117588422A/en active Pending
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