CN114252213A - Heating and ventilation circulating pipeline water leakage monitoring system and control method - Google Patents
Heating and ventilation circulating pipeline water leakage monitoring system and control method Download PDFInfo
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- CN114252213A CN114252213A CN202111577695.6A CN202111577695A CN114252213A CN 114252213 A CN114252213 A CN 114252213A CN 202111577695 A CN202111577695 A CN 202111577695A CN 114252213 A CN114252213 A CN 114252213A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 269
- 238000010438 heat treatment Methods 0.000 title claims abstract description 77
- 238000009423 ventilation Methods 0.000 title claims abstract description 76
- 238000012544 monitoring process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000035945 sensitivity Effects 0.000 claims description 22
- 238000012806 monitoring device Methods 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Abstract
The invention discloses a heating ventilation circulating pipeline water leakage monitoring system and a control method, and belongs to the field of heating ventilation water leakage monitoring. The control method comprises the following steps: responding to a self-adaptive adjustment request of a user, storing flow values of a water supply pipeline and a water return pipeline and the current time at intervals of a first set time length, and forming a non-water leakage state database until a second set time length; and receiving real-time flow on a water supply pipeline and a water return pipeline, and comparing the real-time flow with the non-water leakage state database to determine whether the heating and ventilation circulating pipeline has water leakage risk. The invention solves the problem that the water leakage risk judgment of the existing heating and ventilation circulating pipeline water leakage monitoring system is not accurate enough.
Description
Technical Field
The invention relates to the technical field of heating and ventilation circulating water systems, in particular to a heating and ventilation circulating pipeline water leakage monitoring system and method.
Background
Along with the gradual improvement of air quality demand of people to the living office environment, capillary air conditioner, floor heating and centralized living hot water are gradually popularized to novel buildings. However, the heating and ventilation circulating water system has the hidden trouble of water leakage, the water leakage phenomenon in the home often occurs due to the reasons that a plurality of water pipe connectors are not tightly connected during installation, the service life is too long, the aging and the system pressure are occasionally too high and the like, and if no one is in the home for immediate treatment, large-area water leakage can occur, even public area equipment or neighbor houses are flooded, and huge economic loss is caused.
In the existing heating ventilation circulating water leakage monitoring system, a flow difference value is obtained by subtracting a supply water flow value and a return water flow value in real time, when the flow difference value is larger than a set threshold value, a leakage risk is considered to exist, an alarm is given, water supply is stopped, and maintenance is carried out. However, the existing circulating water leakage monitoring system does not consider the problem of data deviation caused by the reasons of different water meters, installation processes, different water supply pressures in different time periods and the like, and after the circulating system operates for a period of time, the water leakage judgment is not accurate enough, so that the water leakage protection effect of the water leakage monitoring system is poor.
Disclosure of Invention
Therefore, the invention provides a heating and ventilation circulating pipeline water leakage monitoring system and a control method capable of adaptively judging the water leakage condition.
In order to solve the technical problems, the invention provides the following technical scheme:
a control method of a heating and ventilation circulating pipeline water leakage monitoring system comprises the following steps: responding to a self-adaptive adjustment request of a user, storing flow values of a water supply pipeline and a water return pipeline at intervals of a first set time length and forming a non-water leakage state database at the current time; and receiving real-time flow on a water supply pipeline and a water return pipeline, and comparing the real-time flow with the non-water leakage state database to determine whether the heating and ventilation circulating pipeline has water leakage risk.
In some embodiments of the present invention, the determining whether the heating and ventilation circulation pipeline has the water leakage risk according to the comparison between the real-time flow and the non-water leakage state database specifically includes: and taking the maximum flow difference value in the non-water leakage state database as a first set threshold, and judging that the heating and ventilation circulating pipeline has the water leakage risk when the received real-time flow difference value between the water supply pipeline and the water return pipeline is greater than the first set threshold.
In some embodiments of the present invention, the determining whether the heating and ventilation circulation pipeline has the water leakage risk according to the comparison between the real-time flow and the non-water leakage state database specifically includes: and receiving the duration time of the real-time flow difference between the water supply pipeline and the water return pipeline, taking the maximum duration time of the same flow difference in the non-water leakage state database as a second set threshold, and judging that the heating and ventilation circulating pipeline has the water leakage risk when the duration time of the real-time flow difference between the water supply pipeline and the water return pipeline is greater than the second set threshold.
In some embodiments of the present invention, in response to a sensitivity adjustment request of a user, whether the heating and ventilation circulation pipeline leaks water is finally determined according to different sensitivity gears selected by the user and whether a water leakage risk exists currently.
In some embodiments of the invention, the sensitivity gear comprises one or more of a first gear, a second gear and a third gear;
when the first gear is adopted, after the heating and ventilation circulating pipeline is determined to have the water leakage risk, whether the heating and ventilation circulating pipeline has the water leakage risk is determined again after a third set time interval; when the water leakage risk is determined again, the heating and ventilation circulating pipeline is judged to leak water;
when the heating and ventilation circulating pipeline is determined to have the water leakage risk at the second position, determining whether the heating and ventilation circulating pipeline has the water leakage risk again after a fourth set time interval; and when the water leakage risk is determined again, the heating and ventilation circulating pipeline is judged to leak water.
And when the third gear is used, directly judging that the heating and ventilation circulating pipeline leaks water after the heating and ventilation circulating pipeline is determined to have the water leakage risk.
In some embodiments of the invention, after the heating and ventilation circulation pipeline is judged to be leaked, the switching valve on the water supply pipeline is controlled to be closed, and the alarm device is controlled to be started; and after the water leakage fault is relieved, responding to a reset request of a user, controlling the switching valve on the water supply pipeline to be opened, controlling the alarm device to be closed, and recovering to a normal operation mode.
The invention also provides a heating and ventilation circulating pipeline water leakage monitoring system, which comprises: the flow monitoring devices are arranged on the water supply pipeline and the water return pipeline and are used for detecting real-time flow values on the water supply pipeline and the water return pipeline; the water supply system comprises a control panel and a controller, wherein a self-adaptive key is arranged on the control panel, the controller comprises a storage unit, and after the self-adaptive key is selected, the controller controls the storage unit to store flow values of a water supply pipeline and a water return pipeline at intervals of a first set time length and form a non-water leakage state database at the current moment; the controller is also used for comparing the real-time flow value detected by the flow monitoring device with the non-water leakage state database to determine whether the heating and ventilation circulating pipeline has water leakage risk.
In some embodiments of the present invention, the control panel further includes a sensitivity selection switch, and the controller determines whether the heating and ventilation circulation pipeline leaks water according to gear selection of the sensitivity selection switch and whether a water leakage risk exists currently.
In some embodiments of the present invention, the flow monitoring device includes a first water meter disposed on the water supply pipeline and a second water meter disposed on the water return pipeline.
In some embodiments of the present invention, a switching valve is provided in the water supply line, and a check valve is provided in the water return line.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the control method of the heating and ventilation circulating pipeline water leakage monitoring system, self-adaptive adjustment can be carried out according to user requirements after the monitoring system is initially operated or daily overhauled, so that a non-water leakage state database of the monitoring system is updated according to the using condition of the system, and the problem that in the prior art, a constant is adopted as a flow difference threshold value in a normal state, the deviation between the flow difference threshold value and the flow difference threshold value in the normal state after the circulating pipeline is used for a period of time is overlarge, and the water leakage risk judgment is not accurate enough is solved.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a system configuration diagram of a heating and ventilation circulation pipeline water leakage monitoring system of the present invention;
FIG. 2 is a schematic structural diagram of a heating and ventilation circulation pipeline of the present invention;
fig. 3 is a flowchart of a control method of the heating and ventilation circulation pipeline water leakage monitoring system.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
Fig. 1 shows a specific embodiment of a heating and ventilation circulation pipeline water leakage monitoring system (hereinafter referred to as a water leakage monitoring system) according to the present invention, which includes: the flow monitoring devices are arranged on the water supply pipeline A and the water return pipeline B and are used for detecting real-time flow values on the water supply pipeline A and the water return pipeline B; the controller 10 comprises a storage unit, and after the adaptive switch 30 is selected, the controller 10 controls the storage unit to store flow values of the water supply pipeline A and the water return pipeline B at intervals of a first set time length and form a non-water leakage state database at the current moment by controlling the storage unit to store the flow values of the water supply pipeline A and the water return pipeline B at intervals of a first set time length; the controller 10 is further configured to determine whether the heating and ventilation circulation pipeline has a water leakage risk according to a comparison between the real-time flow value detected by the flow monitoring device and the non-water leakage state database.
In the water leakage monitoring system, the self-adaptive switch 30 is arranged on the control panel 20, and after the user selects the self-adaptive switch 30, the flow values of the water supply pipeline A and the water return pipeline B in a normal state (in a non-water leakage state) in the circulation pipeline and the time value of the flow values are stored to form a non-water leakage state database; when the adaptive adjustment request is finished, for example, the system starts normal water supply by selecting and finishing operations such as an adaptive adjustment button, and finally determines whether the circulating pipeline has water leakage risk or not according to comparison between real-time flow on the water supply pipeline A and real-time flow on the water return pipeline B and a non-water leakage state database.
Specifically, the flow monitoring device comprises a first water meter 61 arranged on the water supply pipeline A and a second water meter 62 arranged on the water return pipeline B, and real-time flow data is obtained through time differential calculation. The first water meter 61 and the second water meter 62 are counting direct-reading remote water meters, remote water meter sub-bodies and remote direct-reading modules; the power supply voltage DC24V of the remote water meter and the protection level IP65 are communicated with the controller 10 by adopting a 485 interface MODBUS protocol.
As shown in fig. 2, the water supply pipeline a is further provided with a switch valve 70, and the water return pipeline B is provided with a check valve 90, wherein the circulating water passes through the first water meter 61 and then passes through the switch valve 70 to enter the user terminal pipeline, and the returning water firstly passes through the check valve 90 and then passes through the second water meter 62 to the water supply unit for the next circulation.
In order to meet different sensitivity requirements of water leakage judgment, the control panel 20 further includes a sensitivity switch 40, the sensitivity switch 40 sets at least two gears, for example, a first gear with lower sensitivity, a second gear with medium sensitivity, and a third gear with higher sensitivity, and the controller 10 determines whether the heating and ventilation circulation pipeline leaks water according to the gear selection of the sensitivity switch 40 and whether a water leakage risk exists currently. For example, when the user selects the first gear, the monitoring system judges that the interval duration is the third duration after two times of judgment, and finally judges that the system has water leakage risk; when the user selects the second gear, the monitoring system judges that the interval time length is the fourth time length after two times of judgment, and finally judges that the system has water leakage risk; wherein the fourth duration is less than the third duration. When the user selects the third gear, the monitoring system directly judges that the system has water leakage risk after judging that the water leakage risk exists.
The water leakage monitoring system further comprises an alarm device 80, and the control panel 20 further comprises a reset key 50. When the controller 10 determines that the water leakage monitoring system leaks water, the controller 10 controls the on-off valve 70 on the water supply line a to be closed and controls the alarm device 80 to be activated. When the water leakage fault is relieved and the user selects the reset button, the controller 10 controls the on-off valve 70 on the water supply pipeline a to be opened and controls the alarm device 80 to be closed, and the normal operation mode is recovered.
Example two
The invention discloses a specific implementation mode of a control method of a heating and ventilation circulating pipeline water leakage monitoring system, which comprises the following steps:
responding to a self-adaptive adjustment request of a user, storing flow values of a water supply pipeline A and a water return pipeline B and the current time at intervals of a first set time length, and forming a non-water leakage state database until a second set time length; and receiving real-time flow on the water supply pipeline A and the water return pipeline B, and comparing the real-time flow with the non-water leakage state database to determine whether the heating and ventilation circulating pipeline has water leakage risk.
In the control method of the water leakage monitoring system, the flow values of the water supply pipeline A and the water return pipeline B in a normal state (in a non-water leakage state) in the circulating pipeline and the time values of the flow values are stored by responding to the self-adaptive adjustment request of a user to form a non-water leakage state database; after the system normally operates, the real-time flow on the water supply pipeline A and the real-time flow on the water return pipeline B are compared with the water leakage state database to finally determine whether the circulating pipeline has water leakage risks or not.
Specifically, as shown in table 1, the non-leakage state database includes a flow value and a time of the water supply line a, and a flow value and a time of the water return line B. More specifically, the flow values of the water supply line a and the water return line B are stored at intervals of 10-20s until more than 24 hours, so that the flow values of the water supply line a and the water return line B at different times of the day can be monitored.
Table 1 example of a non-leaking water status database
| Monitoring time of day | 9:00 | 9:10 | 9:20 | 9:30 | 9:40 | 9:50 | 10:00 | 10:10 | 10:20 | 10:30 |
| Flow rate of water supply pipeline A | 10.01 | 9.92 | 9.89 | 9.85 | 9.84 | 9.82 | 9.82 | 9.81 | 9.8 | 9.82 |
| Flow rate of return water pipeline B | 9.81 | 9.75 | 9.71 | 9.71 | 9.69 | 9.65 | 9.64 | 9.61 | 9.59 | 9.58 |
| Difference in flow | 0.2 | 0.17 | 0.18 | 0.14 | 0.15 | 0.17 | 0.18 | 0.2 | 0.21 | 0.24 |
Specifically, the judging mode for determining whether the heating and ventilation circulating pipeline has the water leakage risk or not according to the comparison between the real-time flow and the non-water leakage state database is not unique; in one specific embodiment, the maximum flow difference in the non-water leakage state database is used as a first set threshold, and when the real-time flow difference between the water supply pipeline a and the water return pipeline B is greater than the first set threshold, it is determined that the heating and ventilation circulation pipeline has a water leakage risk. The maximum flow difference value can be a group with the maximum flow difference value according to the collected flow difference values of a plurality of groups of water supply pipelines A and water return pipelines B at the same time; the maximum flow difference value can also be a ratio of a maximum flow value of the water supply pipeline A to a minimum flow value of the water return pipeline B in flow data of all the water supply pipeline A and the water return pipeline B in a second set time period.
In another specific embodiment, the determining whether the heating and ventilation circulation pipeline leaks water according to the comparison between the real-time flow and the non-water leakage state database specifically includes: and receiving the duration time of the real-time flow difference between the water supply pipeline A and the water return pipeline B, taking the maximum duration time of the same flow difference in the non-water leakage state database as a second set threshold, and judging that the heating and ventilation circulating pipeline has the water leakage risk when the duration time of the real-time flow difference between the water supply pipeline A and the water return pipeline B is greater than the second set threshold.
Specifically, in order to further adjust the sensitivity of the water leakage judgment, the control method further includes responding to a sensitivity gear request of a user, and finally determining whether the heating and ventilation circulation pipeline leaks water according to the sensitivity gear and whether the water leakage risk exists currently. The monitoring system can be controlled to carry out one or more times of water leakage risk judgment by setting the sensitivity gear by a user.
Specifically, the sensitivity gear comprises one or more of a first gear, a second gear and a third gear; when the first gear is adopted, after the heating and ventilation circulating pipeline is determined to have the water leakage risk, after a third set time interval, whether the heating and ventilation circulating pipeline has the water leakage risk is determined again; when the water leakage risk is determined again, the heating and ventilation circulating pipeline is judged to leak water;
in the second gear, after the heating and ventilation circulating pipeline is determined to have the water leakage risk, and after a fourth set time interval, determining whether the heating and ventilation circulating pipeline has the water leakage risk again; and when the water leakage risk is determined again, the heating and ventilation circulating pipeline is judged to leak water.
And when the third gear is used, directly judging that the heating and ventilation circulating pipeline leaks water after the heating and ventilation circulating pipeline is determined to have the water leakage risk.
When the heating and ventilation circulating pipeline is judged to be leaked, the on-off valve 70 on the water supply pipeline A is controlled to be closed, and meanwhile the alarm device 80 is controlled to be started; when the water leakage fault is relieved, the switching valve 70 on the water supply pipeline A is controlled to be opened in response to a reset request of a user, and the alarm device 80 is controlled to be closed to recover to a normal operation mode.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. A control method of a heating and ventilation circulating pipeline water leakage monitoring system is characterized by comprising the following steps:
responding to a self-adaptive adjustment request of a user, storing flow values of a water supply pipeline and a water return pipeline at intervals of a first set time length and forming a non-water leakage state database at the current time;
and receiving real-time flow on a water supply pipeline and a water return pipeline, and comparing the real-time flow with the non-water leakage state database to determine whether the heating and ventilation circulating pipeline has water leakage risk.
2. The method as claimed in claim 1, wherein the step of determining whether the heating and ventilation circulation pipeline has the water leakage risk according to the comparison between the real-time flow and the non-water leakage status database specifically comprises:
and taking the maximum flow difference value in the non-water leakage state database as a first set threshold, and judging that the heating and ventilation circulating pipeline has the water leakage risk when the received real-time flow difference value between the water supply pipeline and the water return pipeline is greater than the first set threshold.
3. The method as claimed in claim 1, wherein the step of determining whether the heating and ventilation circulation pipeline has the water leakage risk according to the comparison between the real-time flow and the non-water leakage status database specifically comprises:
and receiving the duration time of the real-time flow difference between the water supply pipeline and the water return pipeline, taking the maximum duration time of the same flow difference in the non-water leakage state database as a second set threshold, and judging that the heating and ventilation circulating pipeline has the water leakage risk when the duration time of the real-time flow difference between the water supply pipeline and the water return pipeline is greater than the second set threshold.
4. The control method of the heating and ventilation circulation pipeline water leakage monitoring system according to claim 1, wherein in response to a sensitivity adjustment request of a user, whether the heating and ventilation circulation pipeline leaks water is finally judged according to different sensitivity gears selected by the user and whether a water leakage risk exists currently.
5. The control method of the heating and ventilation circulation pipeline water leakage monitoring system according to claim 4, wherein the sensitivity gear comprises one or more of a first gear, a second gear and a third gear;
when the first gear is adopted, after the heating and ventilation circulating pipeline is determined to have the water leakage risk, whether the heating and ventilation circulating pipeline has the water leakage risk is determined again after a third set time interval; when the water leakage risk is determined again, the heating and ventilation circulating pipeline is judged to leak water;
when the heating and ventilation circulating pipeline is determined to have the water leakage risk at the second position, determining whether the heating and ventilation circulating pipeline has the water leakage risk again after a fourth set time interval; the fourth set time is shorter than the third set time, and when the water leakage risk is determined again, the heating and ventilation circulating pipeline is judged to leak water;
and when the third gear is used, directly judging that the heating and ventilation circulating pipeline leaks water after the heating and ventilation circulating pipeline is determined to have the water leakage risk.
6. The control method of the heating and ventilation circulation pipeline water leakage monitoring system according to claim 1, characterized in that when the heating and ventilation circulation pipeline is judged to be leaked, the on-off valve on the water supply pipeline is controlled to be closed, and the alarm device is controlled to be started; and after the water leakage fault is relieved, responding to a reset request of a user, controlling the switching valve on the water supply pipeline to be opened, controlling the alarm device to be closed, and recovering to a normal operation mode.
7. The utility model provides a warm circulating line water leakage monitoring system that leads to, includes:
the flow monitoring devices are arranged on the water supply pipeline and the water return pipeline and are used for detecting real-time flow values on the water supply pipeline and the water return pipeline;
the water supply system comprises a control panel and a controller, wherein a self-adaptive key is arranged on the control panel, the controller comprises a storage unit, and after the self-adaptive key is selected, the controller controls the storage unit to store flow values of a water supply pipeline and a water return pipeline at intervals of a first set time length and form a non-water leakage state database at the current moment;
the controller is also used for comparing the real-time flow value detected by the flow monitoring device with the non-water leakage state database to determine whether the heating and ventilation circulating pipeline has water leakage risk.
8. The heating and ventilation circulation pipeline water leakage monitoring system according to claim 7, wherein the control panel further comprises a sensitivity selection switch, and the controller determines whether the heating and ventilation circulation pipeline leaks water according to gear selection of the sensitivity selection switch and whether a water leakage risk exists currently.
9. The system according to claim 7, wherein the flow monitoring device comprises a first water meter disposed on the water supply line and a second water meter disposed on the water return line.
10. The heating and ventilation circulation pipeline water leakage monitoring system as claimed in claim 7, wherein a switch valve is arranged on the water supply pipeline, and a check valve is arranged on the water return pipeline.
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