CN111023642A - Three-section type water tank water level control system and method - Google Patents
Three-section type water tank water level control system and method Download PDFInfo
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- CN111023642A CN111023642A CN201911244110.1A CN201911244110A CN111023642A CN 111023642 A CN111023642 A CN 111023642A CN 201911244110 A CN201911244110 A CN 201911244110A CN 111023642 A CN111023642 A CN 111023642A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
Abstract
The invention discloses a three-section water tank water level control system, which comprises: the device comprises a first detection electrode, a second detection electrode, a common electrode, a temperature sensor, a controller and a water replenishing valve; the first detection electrode is arranged at the upper part in the target water tank and is connected with a first input interface of the controller; the second detection electrode is arranged in the middle of the target water tank and is connected with a second input interface of the controller; the common electrode is arranged at the lower part in the target water tank and is connected with a common input interface of the controller; the common electrode is respectively communicated with the first detection electrode and the second detection electrode through the conductivity of water; the temperature sensor is arranged in the target water tank and is connected with a water temperature signal end of the controller; the water inlet end of the water replenishing valve is communicated with an external water replenishing tank, and the water outlet end of the water replenishing valve is communicated with a target water tank; the control end of the water replenishing valve is connected with the water replenishing signal end of the controller.
Description
Technical Field
The invention relates to the field of water level control of water tanks, in particular to a three-section water level control system and a three-section water level control method for a water tank.
Background
Traditional heat pump set water tank only has a water level switch, can only divide into two sections with the water tank water level, when water level switch disconnection, can't acquire the water level height data in the water tank, if it is big to continuously open the water valve and carry out the temperature fluctuation that the moisturizing leads to in the water tank easily, the water tank temperature can reduce, can't accomplish the accurate moisturizing control to the water tank water level to influence heat pump set's availability factor.
Disclosure of Invention
The invention provides a three-section type water tank water level control system and a three-section type water tank water level control method, which are used for accurately checking the water level of a water tank by arranging three water tank water level detection sections and controlling the on or off of water supplement in combination with the temperature of the water tank, so that the technical problem that the water level of the water tank cannot be accurately controlled due to the fact that the water level data in the water tank cannot be acquired by a traditional heat pump unit water tank is solved, the water level of the water tank is accurately controlled in water supplement, and the use efficiency of a heat pump unit is improved.
In order to solve the above technical problem, an embodiment of the present invention provides a three-stage water level control system for a water tank, including: the device comprises a first detection electrode, a second detection electrode, a common electrode, a temperature sensor, a controller and a water replenishing valve;
the first detection electrode is arranged at the upper part in the target water tank and is connected with a first input interface of the controller; the second detection electrode is arranged in the middle of the target water tank and is connected with a second input interface of the controller; the common electrode is arranged at the lower part in the target water tank and is connected with a common input interface of the controller; the common electrode is respectively communicated with the first detection electrode and the second detection electrode through the conductivity of water;
the temperature sensor is arranged in the target water tank and is connected with a water temperature signal end of the controller;
the water inlet end of the water replenishing valve is communicated with an external water replenishing tank, and the water outlet end of the water replenishing valve is communicated with the target water tank; and the control end of the water replenishing valve is connected with the water replenishing signal end of the controller.
Preferably, the water level position of the first detection electrode arranged in the target water tank is 50-90% of the full-load water level, including 50% and 90%; the water level position of the second detection electrode arranged in the target water tank is 10-50% of the full-load water level, wherein the water level position comprises 10% but not 50%; the common electrode is disposed at a bottom position within the target tank.
Preferably, the temperature sensor is disposed at a bottom portion inside the target water tank.
Preferably, the first detection electrode, the second detection electrode and the common electrode are all electrode type water level sensors.
The embodiment of the invention also provides a three-section water tank water level control method, which is used for controlling the three-section water tank water level control system, and comprises the following steps:
acquiring detection signals of a first detection electrode and a second detection electrode, and acquiring a temperature value of a target water tank through a temperature sensor;
when the first detection electrode continuously detects a voltage signal within a preset first time period, the target water tank is judged to be in a full water level state, and the controller sends a closing signal to the water replenishing valve to close the water replenishing valve and stop water replenishing;
when the second detection electrode is judged to be not continuously detecting the voltage signal within a preset second time period, the target water tank is judged to be in a forced water supplementing state, and the controller sends an opening signal to the water supplementing valve to open the water supplementing valve to supplement water to the target water tank;
and when the first detection electrode continuously detects no voltage signal and the second detection electrode continuously detects a voltage signal within a preset third time period, sending an opening or closing signal to the water replenishing valve according to the temperature value of the target water tank and the temperature value of the water replenishing tank so as to control the opening or closing of the water replenishing valve.
As a preferred scheme, the sending an opening or closing signal to the water replenishing valve according to the temperature value of the target water tank and the temperature value of the water replenishing tank to control the opening or closing of the water replenishing valve specifically includes:
setting a heating set temperature value, a water tank water supplementing temperature difference value and a water supplementing temperature return difference value;
calculating the difference value between the heating set temperature value and the water supplementing temperature difference value of the water tank to serve as the temperature value of the water supplementing tank;
when the temperature value of the target water tank is judged to be larger than or equal to the sum of the temperature value of the water replenishing tank and the water replenishing temperature return difference value, the controller sends an opening signal to the water replenishing valve to open the water replenishing valve to replenish water to the target water tank;
and when the temperature value of the target water tank is judged to be less than or equal to the difference between the temperature value of the water replenishing tank and the water replenishing temperature return difference value, the controller sends a closing signal to the water replenishing valve to close the water replenishing valve and stop water replenishing.
As a preferred scheme, the heating set temperature value is 10-55 ℃; the difference value of the water supplementing temperature of the water tank is 0-10 ℃; and the water supplementing temperature return difference value is 0-10 ℃.
Preferably, the preset first time period is two minutes.
Preferably, the preset second time period is two minutes.
Preferably, the preset third time period is two minutes.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the invention, the three water tank water level detection sections are arranged to accurately detect the water level of the water tank, and the opening or closing of water supplement is controlled by combining the water tank temperature, so that the technical problem that the water level in the water tank cannot be obtained by the water tank of the traditional heat pump unit, and the accurate water supplement control on the water level of the water tank cannot be realized is solved, and thus, the water level of the water tank is accurately controlled, and the use efficiency of the heat pump unit is improved.
Drawings
FIG. 1: is a structural schematic diagram of a three-section water tank level control system in the embodiment of the invention;
FIG. 2: the invention provides a flow chart of steps of a three-section water tank water level control method in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a preferred embodiment of the present invention provides a three-stage water level control system for a water tank, comprising: the device comprises a first detection electrode, a second detection electrode, a common electrode, a temperature sensor, a controller and a water replenishing valve;
the first detection electrode is arranged at the upper part in the target water tank and is connected with a first input interface of the controller; the second detection electrode is arranged in the middle of the target water tank and is connected with a second input interface of the controller; the common electrode is arranged at the lower part in the target water tank and is connected with a common input interface of the controller; the common electrode is respectively communicated with the first detection electrode and the second detection electrode through the conductivity of water; the temperature sensor is arranged in the target water tank and is connected with a water temperature signal end of the controller; the water inlet end of the water replenishing valve is communicated with an external water replenishing tank, and the water outlet end of the water replenishing valve is communicated with the target water tank; and the control end of the water replenishing valve is connected with the water replenishing signal end of the controller.
In the embodiment, the water level position of the first detection electrode arranged in the target water tank is 50-90% of the full-load water level, including 50% and 90%; the water level position of the second detection electrode arranged in the target water tank is 10-50% of the full-load water level, wherein the water level position comprises 10% but not 50%; the common electrode is disposed at a bottom position within the target tank. In the present embodiment, the temperature sensor is disposed at the bottom inside the target tank. The water level is set to be 50-90% including 50% and 90% by setting the first detection electrode and 10-50% including 10% but not 50% by setting the second detection electrode, so that the water level sectional setting and the detection result are more reasonable; the detection of the high water level of 50-90% is more reasonable in the control implementation scheme of the technical scheme, and similarly, the detection of the low water level of 10-50% can make the control of the forced water supplement condition more reasonable. In a specific embodiment of this step, the first detection electrode may be set to detect the water level of 80%, and the second detection electrode may be set to detect the water level of 30%; the setting position of the detected water level in this step can be adjusted as required, and the setting of the position in this step is not intended to limit the protection scope of the technical solution of this patent. The temperature sensor is arranged at the bottom of the target water tank in the step, so that the temperature sensor can always detect the water temperature, and the condition that the sensor cannot detect due to low water level is avoided.
In this embodiment, the first detection electrode, the second detection electrode and the common electrode are all electrode type water level sensors. The electrode type water level sensor is a sensor commonly used in the field, the cost performance of the electrode type water level sensor has certain advantages in a plurality of sensors, and the electrode type water level sensor is adopted, so that potential signals can be accurately obtained due to the fact that the electrode type water level sensor is high in sensitivity.
Specifically, the technology uses an electrode type water level sensor, and 3 electrode type water level sensors are arranged in the water tank, wherein one electrode is a common electrode (such as an electrode C in the figure), and the other two detection electrodes are two detection electrodes (such as an electrode A and an electrode B in the figure, the electrode A is a first detection electrode, and the electrode B is a second detection electrode). And a temperature sensor is arranged at the bottom of the water tank. The electrode type water level sensor needs to input 5V at a common electrode (electrode C), the common electrode in water is conducted with a detection electrode through the conductivity of water, the detection electrode is connected with a 0-5V input interface of a mainboard controller, and when the mainboard controller detects input voltage (the input voltage is higher than 0.7V), the electrode is judged to be in water. When the input voltage of the electrode A is electrified with the electrode C, the water level in the water tank is higher than 80%, when the input voltage of the electrode B is electrified with the electrode C, the water level in the water tank is between 30% and 80%, and if the electrode C is not electrified with any electrode, the water level in the water tank is lower than 30%.
Referring to fig. 2, an embodiment of the present invention further provides a three-stage water tank level control method for controlling the three-stage water tank level control system, which includes the steps of:
and S1, acquiring detection signals of the first detection electrode and the second detection electrode, and acquiring a temperature value of the target water tank through the temperature sensor.
S2, when the first detection electrode continuously detects a voltage signal within a preset first time period, the target water tank is judged to be in a full water level state, and the controller sends a closing signal to the water replenishing valve to close the water replenishing valve and stop water replenishing; in this embodiment, the preset first time period is two minutes.
S3, when the second detection electrode is judged to be continuously not detecting a voltage signal (the electrodes A and B do not detect a voltage signal) within a preset second time period, namely the water level is lower than the forced water supplementing water level, the target water tank is judged to be in a forced water supplementing state, and the controller sends an opening signal to the water supplementing valve to open the water supplementing valve to supplement water to the target water tank; in this embodiment, the preset second time period is two minutes.
And S4, when it is judged that no voltage signal is continuously detected by the first detection electrode in a preset third time period and a voltage signal is continuously detected by the second detection electrode, namely the water level is between the temperature-controlled water supplementing water level and the forced water supplementing water level, calculating the temperature of the water supplementing water tank, and sending an opening or closing signal to the water supplementing valve according to the temperature value of the target water tank and the temperature value of the water supplementing water tank so as to control the opening or closing of the water supplementing valve. In this embodiment, the preset third time period is two minutes.
In the scheme, the time periods are set to be two minutes, the time periods are effective results obtained through actual operation, the results are displayed, and judgment is carried out within two minutes of the time periods, so that the adverse effect of the whole water level control system can be reduced to the minimum.
In this embodiment, the sending an opening or closing signal to the water replenishing valve according to the temperature value of the target water tank and the temperature value of the water replenishing tank to control the opening or closing of the water replenishing valve specifically includes:
s41, setting a heating set temperature value, a water tank water supplementing temperature difference value and a water supplementing temperature return difference value; in the embodiment, the set heating temperature value is 10-55 ℃; the difference value of the water supplementing temperature of the water tank is 0-10 ℃; and the water supplementing temperature return difference value is 0-10 ℃. The range setting of the temperature value parameter is an effective result obtained through actual operation, and the result shows that the value is taken within the range of the temperature value parameter, so that the beneficial effect of the whole water level control system can be optimal.
And S42, calculating the difference value between the heating set temperature value and the water supplementing temperature difference value of the water tank as the temperature value of the water supplementing tank.
And S43, when the temperature value of the target water tank is judged to be larger than or equal to the sum of the temperature value of the water replenishing tank and the water replenishing temperature return difference value, the controller sends an opening signal to the water replenishing valve to open the water replenishing valve so as to replenish water to the target water tank.
And S44, when the temperature value of the target water tank is judged to be less than or equal to the difference between the temperature value of the water replenishing tank and the water replenishing temperature return difference value, the controller sends a closing signal to the water replenishing valve to close the water replenishing valve and stop water replenishing.
The scheme of controlling the water level by the water temperature is further improved, the heating set temperature value, the water tank water supplementing temperature difference value and the water supplementing temperature return difference value are combined, the logic of water temperature control can be more comprehensive, the water level is controlled based on a scientific temperature value range, the effective effect of the whole water level control system can be optimal, and adverse influence factors caused by temperature change are reduced.
Specifically, the temperature of the water replenishing tank is equal to the heating set temperature-water replenishing temperature difference of the water tank;
when the temperature of the water tank is larger than or equal to the temperature of the water replenishing water tank and the return difference of the water replenishing temperature, the mainboard controller opens the water replenishing valve to output a signal, the water replenishing valve is opened, and the water is replenished to the water tank;
and when the temperature of the water tank is less than or equal to the temperature of the water supplementing water tank and the water supplementing temperature return difference, the mainboard controller closes the water supplementing valve to output a signal, the water supplementing valve is closed, and water supplementing is stopped.
The default value of the heating set temperature is 45 ℃, and the range is 10-55 ℃; the default value of the water supplementing temperature difference of the water tank is 5 ℃, and the range is 0-10 ℃; the water supplementing temperature return difference default value is 1 ℃, and the range is 0-10 ℃.
According to the invention, the three water tank water level detection sections are arranged to accurately detect the water level of the water tank, and the opening or closing of water supplement is controlled by combining the water tank temperature, so that the technical problem that the water level in the water tank cannot be obtained by the water tank of the traditional heat pump unit, and the accurate water supplement control on the water level of the water tank cannot be realized is solved, and thus, the water level of the water tank is accurately controlled, and the use efficiency of the heat pump unit is improved.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (10)
1. A three-stage water tank level control system, comprising: the device comprises a first detection electrode, a second detection electrode, a common electrode, a temperature sensor, a controller and a water replenishing valve;
the first detection electrode is arranged at the upper part in the target water tank and is connected with a first input interface of the controller; the second detection electrode is arranged in the middle of the target water tank and is connected with a second input interface of the controller; the common electrode is arranged at the lower part in the target water tank and is connected with a common input interface of the controller; the common electrode is respectively communicated with the first detection electrode and the second detection electrode through the conductivity of water;
the temperature sensor is arranged in the target water tank and is connected with a water temperature signal end of the controller;
the water inlet end of the water replenishing valve is communicated with an external water replenishing tank, and the water outlet end of the water replenishing valve is communicated with the target water tank; and the control end of the water replenishing valve is connected with the water replenishing signal end of the controller.
2. The three-stage tank level control system of claim 1, wherein the first sensing electrode is disposed in the target tank at a level between 50% and 90% of the full water level, including 50% and 90%; the water level position of the second detection electrode arranged in the target water tank is 10-50% of the full-load water level, wherein the water level position comprises 10% but not 50%; the common electrode is disposed at a bottom position within the target tank.
3. The three-stage tank level control system of claim 1, wherein said temperature sensor is disposed at the bottom within said target tank.
4. The three-stage tank level control system of claim 1, wherein said first sensing electrode, said second sensing electrode and said common electrode are all electrode level sensors.
5. A three-stage tank level control method for controlling the three-stage tank level control system according to any one of claims 1 to 4, comprising the steps of:
acquiring detection signals of a first detection electrode and a second detection electrode, and acquiring a temperature value of a target water tank through a temperature sensor;
when the first detection electrode continuously detects a voltage signal within a preset first time period, the target water tank is judged to be in a full water level state, and the controller sends a closing signal to the water replenishing valve to close the water replenishing valve and stop water replenishing;
when the second detection electrode is judged to be not continuously detecting the voltage signal within a preset second time period, the target water tank is judged to be in a forced water supplementing state, and the controller sends an opening signal to the water supplementing valve to open the water supplementing valve to supplement water to the target water tank;
and when the first detection electrode continuously detects no voltage signal and the second detection electrode continuously detects a voltage signal within a preset third time period, sending an opening or closing signal to the water replenishing valve according to the temperature value of the target water tank and the temperature value of the water replenishing tank so as to control the opening or closing of the water replenishing valve.
6. The three-stage water tank level control method of claim 5, wherein the sending of an opening or closing signal to the water replenishing valve according to the target water tank temperature value and the water replenishing tank temperature value to control the opening or closing of the water replenishing valve specifically comprises:
setting a heating set temperature value, a water tank water supplementing temperature difference value and a water supplementing temperature return difference value;
calculating the difference value between the heating set temperature value and the water supplementing temperature difference value of the water tank to serve as the temperature value of the water supplementing tank;
when the temperature value of the target water tank is judged to be larger than or equal to the sum of the temperature value of the water replenishing tank and the water replenishing temperature return difference value, the controller sends an opening signal to the water replenishing valve to open the water replenishing valve to replenish water to the target water tank;
and when the temperature value of the target water tank is judged to be less than or equal to the difference between the temperature value of the water replenishing tank and the water replenishing temperature return difference value, the controller sends a closing signal to the water replenishing valve to close the water replenishing valve and stop water replenishing.
7. The method for controlling the water level of the three-stage water tank according to claim 6, wherein the set heating temperature value is 10-55 ℃; the difference value of the water supplementing temperature of the water tank is 0-10 ℃; and the water supplementing temperature return difference value is 0-10 ℃.
8. The method of claim 5, wherein the predetermined first time period is two minutes.
9. The method of claim 5, wherein the predetermined second time period is two minutes.
10. The method of claim 5, wherein the predetermined third time period is two minutes.
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| CN201911244110.1A CN111023642A (en) | 2019-12-06 | 2019-12-06 | Three-section type water tank water level control system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022001339A1 (en) * | 2020-06-29 | 2022-01-06 | 安徽大汉机器人集团有限公司 | Device for directly detecting state of water tank by means of electric signal, method for detecting state of water tank and floor cleaning machine |
| CN114484890A (en) * | 2022-01-27 | 2022-05-13 | 内蒙古工业大学 | Automatic water temperature control method of heat accumulating type water boiler |
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Application publication date: 20200417 |