Water supply filtration system anomaly detection method and device and water supply filtration system

Abstract

The application relates to a water supply filtering system anomaly detection method and device and a water supply filtering system. The water supply filtering system comprises a first filtering branch and a second filtering branch which are connected in parallel, a first filter is arranged in the first filtering branch, a second switch and a second filter are connected in the second filtering branch, the method comprises the following steps: acquiring first temperature information, the first temperature information comprises a first water inlet temperature and / or a first water outlet temperature of a water using device; adjusting the opening degree of the second switch based on the first temperature information; acquiring second temperature information after adjustment, the second temperature information comprises a second water inlet temperature and a second water outlet temperature of the water using device, and determining an anomaly type based on the second temperature information. The application can more accurately determine the anomaly type, facilitate timely maintenance or repair of the water supply filtering system, and can reduce or avoid losses caused by anomalies of the water supply system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water supply filtration, in particular to a water supply filtration system anomaly detection method, device and water supply filtration system. BACKGROUND

[0002] Nowadays, in many industrial production processes, temperature control devices are needed to dissipate heat from components or industrial equipment. High-precision processes such as chip testing have even more stringent requirements for temperature, so the temperature control device is required to continuously control the test temperature within a preset range.

[0003] In the traditional technology, the heat generated by the condenser in the temperature control device is absorbed by the water circulation provided by the water supply system to ensure that the temperature control device can continuously provide a cold source. However, due to the water flow anomalies caused by water supply filtration anomalies that may occur in the water supply system, the condensation effect of the condenser on the refrigerant will be reduced, thereby affecting the temperature control effect of the temperature control device. Therefore, when the water supply system is abnormal, it is necessary to accurately detect the type of anomaly for timely maintenance or repair to minimize or avoid the loss caused by the water supply system anomaly.

[0004] However, in the traditional water supply system anomaly detection technology, only the single comparison result of the water temperature and the preset temperature threshold is used to determine whether there is an anomaly, which is difficult to determine the type of anomaly, and the accuracy of the anomaly detection result is also low. SUMMARY

[0005] Therefore, it is necessary to provide a water supply filtration anomaly detection method, device and water supply filtration system that can improve the accuracy of water supply filtration system anomaly detection to solve the above technical problems.

[0006] In a first aspect, the present application provides a water supply filtration system anomaly detection method, the water supply filtration system is used for filtering cooling water delivered by a water supply device to a water using device, the water supply filtration system includes a first filtration branch and a second filtration branch connected in parallel, a first filter is arranged in the first filtration branch, a second switch and a second filter are connected in series and arranged in the second filtration branch, and the method comprises:

[0007] Obtaining first temperature information, the first temperature information includes a first inlet water temperature and / or a first outlet water temperature of the water using device;

[0008] Adjusting the opening degree of the second switch based on the first temperature information;

[0009] Obtaining the second temperature information after adjustment, the second temperature information includes a second inlet water temperature and a second outlet water temperature of the water using device, and determining the type of anomaly based on the second temperature information.

[0010] In one of the embodiments, the adjusting the opening degree of the second switch based on the first temperature information comprises:

[0011] If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a first preset temperature difference, the opening degree of the second switch is increased to a preset target opening degree.

[0012] The obtaining the adjusted second temperature information comprises:

[0013] After the second switch maintains the preset target opening degree for a preset time, the second temperature information is obtained.

[0014] In one of the embodiments, the increasing the opening degree of the second switch to the preset target opening degree comprises:

[0015] The second switch is increased from an initial opening degree to a preset target opening degree, wherein the initial opening degree ranges from 0 to 30%, and the preset target opening degree ranges from 50% to 100%.

[0016] In one of the embodiments, the determining the abnormal type based on the second temperature information comprises:

[0017] If the second temperature difference between the second outlet water temperature and the second inlet water temperature is greater than a second preset temperature difference, the abnormal type is determined to be a water flow abnormality of the water supply device.

[0018] If the second temperature difference is not greater than a third preset temperature difference, the abnormal type is determined to be a first filter branch fault.

[0019] In one of the embodiments, after the obtaining the first temperature information, the method further comprises:

[0020] If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a fourth preset temperature difference, the abnormal type is determined to be a water flow abnormality.

[0021] In one of the embodiments, the first filter branch further comprises a first switch connected to the first filter, and the adjusting the opening degree of the second switch based on the first temperature information further comprises:

[0022] If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a fifth preset temperature difference, the second switch is adjusted to increase by a preset opening degree, and the first switch is adjusted to decrease by a preset opening degree.

[0023] In a second aspect, the application further provides an abnormality detection device for a water supply filtration system, the water supply filtration system being configured to filter cooling water delivered by a water supply device to a water using device, the water supply filtration system comprising a first filtration branch and a second filtration branch connected in parallel, the first filtration branch being provided with a first filter, and the second filtration branch being provided with a second switch and a second filter connected in series, the device comprising:

[0024] a temperature detection module configured to obtain first temperature information and second temperature information, the first temperature information comprising a first inlet water temperature and / or a first outlet water temperature of the water using device, and the second temperature information comprising a second inlet water temperature and a second outlet water temperature of the water using device after adjusting an opening degree of the second switch;

[0025] a switch control module connected to the temperature detection module and the second switch, and configured to adjust the opening degree of the second switch based on the first temperature information;

[0026] an abnormality detection module connected to the temperature detection module, and configured to determine an abnormality type based on the second temperature information.

[0027] In a third aspect, the application further provides a water supply filtration system configured to filter water delivered by a water supply device, comprising a first filtration branch and a second filtration branch connected in parallel to a water outlet end of the water supply device, the first filtration branch being provided with a first filter, and the second filtration branch being provided with a second switch and a second filter connected in series, the water outlet ends of the first filter and the second filter being connected to a water using device, the water supply filtration system further comprising a temperature detection device connected to an inlet water end and an outlet water end of the water using device, and a monitoring device connected to the temperature detection device and the second switch, wherein,

[0028] the temperature detection device is configured to detect an inlet water temperature and an outlet water temperature of the water using device, and send the temperatures to the monitoring device;

[0029] the monitoring device is configured to adjust an opening degree of the second switch based on the inlet water temperature and the outlet water temperature.

[0030] In one embodiment, the water supply filtration system further comprises a first alarm device connected to the monitoring device;

[0031] the monitoring device is further configured to send a first alarm signal to the first alarm device when a temperature difference between the outlet water temperature and the inlet water temperature is greater than a preset temperature difference;

[0032] the first alarm device is configured to issue a water flow abnormality alarm based on the first alarm signal.

[0033] In one of the embodiments, a second alarm device and a third alarm device are further connected to the monitoring device respectively.

[0034] The monitoring device is further configured to send a second alarm signal to the second alarm device if the temperature difference is greater than the preset temperature difference after increasing the opening degree of the second switch and keeping the opening degree for more than the preset time, and send a third alarm signal to the third alarm device if the temperature difference is not greater than the preset temperature difference.

[0035] The second alarm device is configured to send a water flow abnormality alarm of the water supply device based on the second alarm signal.

[0036] The third alarm device is configured to send a first filter branch fault alarm based on the third alarm signal.

[0037] In one of the embodiments, a fourth alarm device is further connected to the monitoring device.

[0038] The monitoring device is further configured to send a fourth alarm signal to the fourth alarm device if the water inlet temperature is greater than the preset temperature.

[0039] The fourth alarm device is configured to send a water temperature abnormality alarm of the water supply device based on the fourth alarm signal.

[0040] In one of the embodiments, a first switch is further included in the first filter branch and connected to the first filter.

[0041] The monitoring device is further connected to the first switch, and the monitoring device is further configured to control the opening degree of the first switch based on the water inlet temperature and the water outlet temperature.

[0042] In one of the embodiments, the first switch is a normally closed switch, and the second switch is a normally open switch; the monitoring device is configured to control the first switch to be closed and the second switch to be opened if the temperature difference between the water outlet temperature and the water inlet temperature is greater than the preset temperature difference.

[0043] In one of the embodiments, a first one-way valve is further included in the first filter branch and connected to the first filter in the water supply direction; and / or a second one-way valve is further included in the second filter branch and connected to the second filter in the water supply direction.

[0044] The water supply filtering abnormality detection method, device and water supply filtering system, the water supply filtering system is used for filtering cooling water delivered by a water supply device to a water using device, and comprises a first filtering branch and a second filtering branch which are arranged in parallel, a first filter is arranged in the first filtering branch, a second switch and a second filter are arranged in the second filtering branch in series, the water supply filtering abnormality detection method comprises the following steps: obtaining first temperature information, the first temperature information comprises a first water inlet temperature and / or a first water outlet temperature of the water using device; adjusting an opening degree of the second switch based on the first temperature information; obtaining adjusted second temperature information, the second temperature information comprises a second water inlet temperature and a second water outlet temperature of the water using device, and determining an abnormality type based on the second temperature information. After the first temperature information is obtained, whether there is an abnormality tendency can be preliminarily judged based on the first temperature information, and the opening degree of the second switch is adjusted based on the first temperature information. After the opening degree of the second switch is adjusted, the adjusted second temperature information is obtained again, at this time, due to the change of the opening degree of the second switch, the water flow delivered by the water supply device to the water using device can also change. Based on the second temperature information, the abnormality type can be determined more accurately, the water supply filtering system can be maintained or repaired in time, and the loss caused by the abnormality of the water supply system can be reduced or avoided.

[0045] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the application. In the drawings:

[0047] Figure 1 A structure schematic diagram of a temperature control cold system in the prior art;

[0048] Figure 2 A water supply circuit structure schematic diagram of a water supply filtering system comprising an embodiment of the application;

[0049] Figure 3 A water supply circuit structure schematic diagram of a water supply filtering system comprising another embodiment of the application;

[0050] Figure 4 A monitoring flowchart of a water supply filtering system in an embodiment;

[0051] Figure 5 A flowchart of a water supply filtering abnormality detection method in an embodiment;

[0052] Figure 6A structural block diagram of a water supply filtering system anomaly detection device in an embodiment. DETAILED DESCRIPTION

[0053] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0054] Unless otherwise defined, technical terms and scientific terms used in the present application shall have the same meaning as those understood by a person with ordinary skill in the art to which the present application belongs. In the present application, "one", "a", "an", "the", "these", and similar words do not represent a quantitative limitation, but can be singular or plural. In the present application, the terms "include", "contain", "have" and any variants thereof are intended to cover non-exclusive inclusion; for example, a process, method and system, product or device containing a series of steps or modules (units) are not limited to the listed steps or modules (units), but can include steps or modules (units) not listed, or can include other steps or modules (units) inherent to the process, method, product or device. In the present application, the terms "connected", "connected", "coupled" and the like do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. In the present application, "multiple" means two or more. The association between the associated objects described by "and / or" can exist in three relationships, for example, "A and / or B" can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In general, the character " / " represents an "or" relationship between the associated objects. In the present application, the terms "first", "second", "third" and the like are only used to distinguish similar objects, and do not represent a specific order for the objects.

[0055] The terms "module", "unit" and the like used below are a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in hardware, implementation of software or a combination of software and hardware is also possible and is contemplated.

[0056] In the conventional technology, the temperature control cooling system provided for the test equipment can adopt a cascade refrigeration cycle system, such as Figure 1As shown, the high-temperature circuit (the middle circuit) exchanges heat with the low-temperature circuit (the circuit below the high-temperature circuit) through an intermediate heat exchanger to produce high-temperature, low-pressure refrigerant. After being drawn into compressor 1, the pressure is increased to produce high-temperature, high-pressure gaseous refrigerant. This high-temperature, high-pressure gaseous refrigerant releases heat in the condenser to produce medium-temperature, high-pressure liquid refrigerant. This is then expanded and depressurized by expansion valve 1 to form low-temperature, low-pressure liquid refrigerant that flows back to the intermediate heat exchanger, completing the refrigeration cycle. The refrigeration principle of the low-temperature circuit is similar to that of the high-temperature circuit. The operating mode of compressor 2 and expansion valve 2 refers to the high-temperature circuit described above. The refrigeration module provides a low-temperature environment for the test equipment. The water supply circuit (the circuit above the high-temperature circuit) cools the high-temperature circuit through a condenser. Specifically, a filter for filtering foreign matter in the water is connected to the water outlet pipe of the water supply equipment. The cooling water provided by the water supply equipment is filtered by the filter and then sent to the condenser. The condensation heat generated by the condenser is absorbed and then flows back to the water supply equipment through the pipe. When the filter is clogged, causing the water flow supplied to the condenser by the water supply equipment to decrease or be cut off, the condensation heat of the condenser cannot be absorbed by sufficient cooling water in time, and the cooling capacity of the refrigeration module decreases, which in turn causes the refrigeration module to be unable to meet the refrigeration temperature setting standard. The cascade refrigeration cycle system needs to be shut down as a whole to clean the filter, which will cause the testing process to be forced to stagnate and cause significant losses.

[0057] Based on this, in the embodiment of this application, Figure 2 As shown, a water supply filtration system is provided for filtering the water outlet of the water supply equipment, comprising a first filter branch and a second filter branch connected to the water outlet of the water supply equipment and arranged in parallel, the first filter branch is provided with a first filter, the second filter branch is provided with a second switch and a second filter connected thereto, the water outlets of the first filter and the second filter are connected to the water-using equipment, and the water-using equipment can be used Figure 1 A cascade refrigeration cycle system consisting of a medium- and high-temperature stage circuit and a low-temperature stage circuit. The water supply and filtration system also includes a temperature detection device connected to the water inlet and outlet of the water-using equipment. The water supply and filtration system also includes a monitoring device connected to the temperature detection device and a second switch. The temperature detection device is used to detect the inlet and outlet temperatures of the water-using equipment and transmit them to the monitoring device. The monitoring device is used to control the opening of the second switch based on the inlet and outlet temperatures. Figure 2 The middle arrow indicates the direction of water supply.

[0058] The water supply filtering system provided by the embodiments of the present application can include a water supply device, such as an industrial water chiller unit, a cooling water tower, etc., for providing cooling water to a water using device. The first filter and the second filter can include a valveless filter tank, a shallow sand filter, a pressure quartz sand filter, etc., for filtering the cooling water provided by the water supply device. The second switch can include an electric valve, a solenoid valve, etc. When the water supply filtering system is in normal operation, the water supply device mainly provides cooling water to the water using device through the first filtering branch, and the cooling water is mainly filtered by the first filter. At this time, the initial opening degree of the second switch can be any preset value in the range of 0-30%, but should not exceed 30%. The water inlet end and the water outlet end of the water using device are connected with a temperature detection device for detecting the water inlet temperature and the water outlet temperature of the water using device and sending the temperature to a monitoring device. The temperature detection device can include an infrared temperature detector, a temperature sensor, etc. with data transmission function. It can be understood that the temperature detection device can include one or two temperature detection devices, which can be connected with the water inlet end and the water outlet end of the water using device respectively, collect the temperature and send the temperature to the monitoring device, or one temperature detection device can detect the temperature of the water inlet end and the water outlet end of the water using device and send the temperature to the monitoring device. The present application does not limit the temperature detection device. The monitoring device can be connected with the temperature detection device through wireless or wired mode to obtain the temperature of the water inlet end and the water outlet end of the water using device. The monitoring device can be connected with the second switch through wireless or wired mode to control the on-off of the second switch. It can be understood that when the monitoring device is connected with the second switch and the temperature detection device through wireless mode, the second switch can be a wireless control electric valve, and the temperature detection device can be a temperature detection device with wireless temperature data transmission function. The water using device can include a temperature control device, which can include an industrial refrigeration device, an air conditioning device, etc.

[0059] In the embodiments of the present application, by setting the first filter branch and the second filter branch connected with the water outlet end of the water supply device and arranged in parallel, the temperature detection device connected with the water inlet end and the water outlet end of the water using device, and the monitoring device connected with the temperature detection device and the second switch, the inlet water temperature and the outlet water temperature of the water using device can be detected by the temperature detection device and sent to the monitoring device, and then the opening degree of the second switch can be controlled by the monitoring device based on the inlet water temperature and the outlet water temperature. The monitoring device controlling the opening degree of the second switch based on the inlet water temperature and the outlet water temperature can include increasing the opening degree of the second switch when the outlet water temperature is higher than the preset outlet water temperature and the inlet water temperature is higher than the preset inlet water temperature; and keeping the opening degree of the second switch unchanged when the above conditions are not met. In other embodiments, the monitoring device controlling the opening degree of the second switch based on the inlet water temperature and the outlet water temperature can also include keeping the opening degree of the second switch unchanged when the difference between the outlet water temperature and the inlet water temperature is not greater than the preset temperature difference, and in this case, the water supply device mainly provides cooling water for the water using device through the first filter branch. When the difference between the outlet water temperature and the inlet water temperature is greater than the preset temperature difference, the opening degree of the second switch is increased, and in this case, it may be the case that the water flow is abnormal due to the failure of the first filter. When the first filter in the first filter branch is maintained or repaired, the water supply device can continuously provide cooling water for the water using device through the second filter branch, so as to ensure that the water using device does not stop during the maintenance process. On the other hand, when the water supply device is normally operated, the cooling water for the water using device is provided by the first filter branch, and the second filter in the second filter branch can be maintained or repaired periodically or irregularly, so as to avoid the simultaneous failure of the second filter and the first filter, and further reduce the possibility of stopping the water using device. In some embodiments, the monitoring device controlling the opening degree of the second switch can include the monitoring device increasing the opening degree of the second switch or keeping the opening degree of the second switch unchanged, wherein increasing the opening degree of the second switch can include adjusting the opening degree of the second switch from the initial opening degree in 0-30% to any target opening degree in 50%-100%, but the target opening degree should not be lower than 50%. Keeping the opening degree of the second switch unchanged can be keeping the initial opening degree of the second switch unchanged.

[0060] In the embodiments of the present application, the monitoring device can include an arithmetic logic module, a comparator module or an operational amplifier module in the prior art. In some embodiments, after receiving the inlet water temperature and outlet water temperature sent by the temperature detection device, the monitoring device calculates the temperature difference between the outlet water temperature and the inlet water temperature through the arithmetic logic module, and then can compare the size of the outlet water temperature and the preset outlet water temperature, the size of the inlet water temperature and the preset inlet water temperature through the comparator module or the operational amplifier module to output a high level or a low level; or can calculate the temperature difference according to the outlet water temperature and the inlet water temperature, and output a high level or a low level according to the comparison result of the temperature difference and the preset temperature difference. After the monitoring device sends the high level or the low level to the alarm device connected thereto, the alarm device can execute the corresponding operation result according to the signal of the high level or the low level. Meanwhile, the monitoring device can also control the opening degree of the second switch based on the high level or the low level through the limit control module. In the embodiments of the present application, the opening degree of the second switch can be controlled by the limit stopper and the electric valve, for example, the limit stopper can be an electric gate valve limit stopper of model Z940H, and the electric valve can be an electric valve of model VA7000.

[0061] In the embodiments of the present application, since the water flow anomaly of the water supply filtration system is usually caused by the dirt blockage of the commonly used first filter, when the monitoring device determines that the water flow is abnormal after obtaining the outlet water temperature and the inlet water temperature of the water using equipment, the opening degree of the second switch can be controlled to increase the water supply amount of the water using equipment through the second filtration branch, thereby increasing the total water supply amount of the water using equipment to meet the water flow demand of the temperature control device and other water using equipment, so that the temperature control device can continuously provide a controllable temperature for the test equipment, avoiding the loss caused by the test process stagnation due to the shutdown of the temperature control device for maintenance of the commonly used filter, and improving the use efficiency of the water supply filtration system and the temperature control device.

[0062] In the conventional technology, it takes a long time for the water supply system to send a high pressure alarm to the temperature control device when the water flow is abnormal or interrupted, especially for the abnormal condition of the water flow decrease of the water supply system, the temperature control device will be running in a high pressure state for a long time, the compressor torque and current increase significantly, the power consumption of the whole machine increases, and the risk of burning the compressor winding increases. Based on this, in the embodiments of the present application, an alarm device connected with the monitoring device can also be set to timely alarm various abnormal conditions of the water supply filtration system and remind the worker to maintain or repair, and then the second filtration branch is used to assist water supply to increase the water flow by controlling the opening degree of the second switch, so as to avoid the water using equipment working in a dangerous state for a long time, and improve the operation stability of the water supply filtration system and the water using equipment.

[0063] In the embodiment of the present application, the water supply filtering system further comprises a first alarm device connected with the monitoring device; the monitoring device is further configured to send a first alarm signal to the first alarm device when the temperature difference between the outlet water temperature and the inlet water temperature is greater than the preset temperature difference; and the first alarm device is configured to issue a water flow abnormality alarm based on the first alarm signal.

[0064] In the embodiment of the present application, a first alarm device connected with the monitoring device can be provided, which can include wired connection or wireless connection. The first alarm device can include a visual alarm device, an audible alarm device, etc. After the monitoring device obtains the inlet water temperature Tin and the outlet water temperature Tout of the water using equipment, the temperature difference AT between the outlet water temperature Tout and the inlet water temperature Tin is calculated. The monitoring device compares the temperature difference AT with the preset temperature difference ATmax. If AT > ATmax, it can be determined that the water flow of the water supply filtering system is abnormal, and the monitoring device sends a first alarm signal to the first alarm device. After the first alarm device receives the first alarm signal, it issues a water flow abnormality alarm based on the first alarm signal. In the case where the monitoring device determines that AT > ATmax, the second switch is controlled to increase the opening degree to increase the water flow of the second filtering branch auxiliary water supply, so as to ensure the continuous normal operation of the water using equipment. In one embodiment, the preset temperature difference ATmax can be set to 5℃.

[0065] In the embodiment of the present application, the first alarm device issuing a water flow abnormality alarm based on the first alarm signal can include alarm through a character display device, alarm through a voice, alarm through a color indicating alarm lamp, alarm through an alarm prompt sound, etc., or alarm through a combination of any two or more of the above alarm methods. The specific alarm method is not limited in the present application.

[0066] In the embodiment of the present application, the monitoring device monitors the inlet and outlet water temperatures of the water using equipment through the temperature detection device, and further monitors whether the water flow of the water supply filtering system is abnormal. If the monitoring device determines that the water flow is abnormal, on the one hand, the second switch is controlled to increase the opening degree to increase the water flow of the second filtering branch auxiliary water supply, so as to ensure that the water using equipment does not stop due to water flow abnormality failure; on the other hand, the first alarm device alarms the water flow abnormality, which can timely notify the staff to maintain or repair the water supply filtering system, thereby improving the working stability of the water supply filtering system and the water using equipment as a whole, and avoiding the risk of the water using equipment working in a dangerous state for a long time.

[0067] Further, the embodiment of the present application further provides a water supply filtering system which can be used to further determine the position of the water flow abnormality fault. The water supply filtering system further comprises a second alarm device connected with the monitoring device; the monitoring device is further used to send a second alarm signal to the second alarm device in the case that the temperature difference is greater than the preset temperature difference after the second switch opening degree is increased and the opening degree is maintained for more than the preset time; and the second alarm device is used to send a water flow abnormality alarm of the water supply device based on the second alarm signal.

[0068] In other embodiments of the present application, the water supply filtering system further comprises a third alarm device connected with the monitoring device; the monitoring device is further used to send a third alarm signal to the third alarm device in the case that the temperature difference is not greater than the preset temperature difference after the second switch opening degree is increased and the opening degree is maintained for more than the preset time; and the third alarm device is used to send a first filtering branch fault alarm based on the third alarm signal.

[0069] In the embodiment of the present application, the monitoring device compares the temperature difference AT with the preset temperature difference ATmax, and if AT>ATmax, the second switch opening degree is increased. After the monitoring device controls the second switch to increase the opening degree, the time t that the second switch maintains the opening degree is obtained. The monitoring device compares the time t that the second switch maintains the opening degree with the preset time t', and if t>t' and the temperature difference AT is still greater than the preset temperature difference ATmax, it is determined that even if the second switch opening degree is increased to make the water flow of the second filtering branch auxiliary water supply exceed the preset time t', the water flow fault problem of the water supply filtering system is not eliminated. In this case, it is determined that the fault position is not the first filtering branch, and the fault position should be the water supply device end. The monitoring device sends a second alarm signal to the connected second alarm device, and the second alarm device sends a water flow abnormality alarm of the water supply device based on the second alarm signal, to inform the maintenance personnel to check the water supply device end, such as whether the water pump is abnormal, and the normal operation of the water supply device and the water using device can not be stopped before the fault is confirmed. On the other hand, if the monitoring device compares the time t that the second switch maintains the opening degree with the preset time t', and in the case that t>t' and AT≤ATmax, it is determined that the water flow fault problem of the water supply filtering system is eliminated after the second switch opening degree is increased to make the water flow of the second filtering branch auxiliary water supply exceed the preset time t', and then it is determined that the fault position is the first filtering branch. The monitoring device sends a third alarm signal to the connected third alarm device, and the third alarm device sends a first filtering branch fault alarm based on the third alarm signal, to inform the maintenance personnel to maintain or repair the first filtering branch. Since the second switch opening degree is increased to make the water flow of the second filtering branch auxiliary water supply increase, the maintenance or repair process of the first filtering branch can not stop the normal operation of the water supply device and the water using device. In an embodiment, the preset time t' can be set to 20 minutes.

[0070] In the above embodiment, by setting the second alarm device and / or the third alarm device in connection with the monitoring device, the position of the water flow abnormality fault of the water supply filtration system can be timely and accurately located, and different fault positions can be separately alarmed, so that the maintenance personnel can quickly and accurately process the fault position, improve the efficiency and timeliness of fault processing, and further improve the working stability of the water supply filtration system.

[0071] In the embodiment of the present application, a water supply filtration system is also provided, further comprising a fourth alarm device connected with the monitoring device; the monitoring device is further configured to send a fourth alarm signal to the fourth alarm device in the case that the water inlet temperature is greater than the preset temperature; and the fourth alarm device is configured to issue a water temperature abnormality alarm of the water supply device based on the fourth alarm signal.

[0072] In the above embodiment, the monitoring device can also monitor the water inlet temperature Tin, and if the water inlet temperature Tin is greater than the preset temperature Ts, it is determined that the cooling water temperature provided by the water supply system is abnormal. The monitoring device sends a fourth alarm signal to the connected fourth alarm device, and the fourth alarm device issues a water temperature abnormality alarm of the water supply device based on the fourth alarm signal. In one embodiment, the preset temperature Ts can be 15°C.

[0073] In the embodiment of the present application, the second alarm device, the third alarm device, and the fourth alarm device can be connected with the monitoring device, or only one or more of the alarm devices can be connected with the monitoring device, and the selection and use of the specific alarm device are not limited in the present application. The second alarm device, the third alarm device, and the fourth alarm device can be selected according to the above-mentioned first alarm device, but should be distinguished in the alarm mode, for example, if the first, second, third, and fourth alarm devices all use a text display device for alarm, different texts should be displayed to distinguish the alarms caused by different faults; if all use a color indicating alarm lamp for alarm, different colors should be used to indicate the alarms caused by different faults, etc. It can be understood that if the second, third, and fourth alarm devices are simultaneously set in one embodiment, the second and third alarm devices or the second and fourth alarm devices can simultaneously alarm.

[0074] In the embodiment of the present application, when the first filtration branch is maintained or repaired due to a fault, a temporary water stop valve or other temporary water stop measures need to be installed. In order to further improve the efficiency of maintenance or repair, the embodiment of the present application further provides a water supply filtration system, the first filtration branch further comprises a first switch connected with the first filter, and the monitoring device is further connected with the first switch, and the monitoring device is further configured to control the opening degree of the first switch based on the water inlet temperature and the water outlet temperature.

[0075] In the above embodiment, as Figure 3As shown, the first filter branch further comprises a first switch connected with the first filter. Figure 3 The arrow indicates the water supply direction. In the case that the temperature difference ΔT between the outlet water temperature Tout and the inlet water temperature Tin is greater than the preset temperature difference ΔTmax, the monitoring device controls the opening degree of the first switch to reduce so as to stop the filtering work of the first filter branch, thereby preventing water leakage when the first filter branch or the first filter is maintained or repaired, and improving the efficiency of the maintenance or repair. In other embodiments, it is conceivable that in the embodiment in which the first switch is arranged in the first filter branch and connected with the monitoring device, the second filter branch can also be used as the normal filter branch according to actual needs. In the embodiment of the application, the first switch can be an electric valve or a solenoid valve, and the control of the opening degree of the first switch by the monitoring device can refer to the control of the opening degree of the second switch as described above, which will not be described here.

[0076] In the embodiment of the application, the first switch is a normally closed switch, and the second switch is a normally open switch; and the monitoring device is configured to control the first switch to be opened and the second switch to be closed in the case that the temperature difference between the outlet water temperature and the inlet water temperature is greater than the preset temperature difference.

[0077] In the above embodiment, the first switch can be arranged as a normally closed switch, and the second switch can be arranged as a normally open switch, that is, the first filter branch completely supplies water to the water-using equipment in the normal state, and the second filter branch is not used as a standby branch. In the case that the monitoring device determines that the temperature difference between the outlet water temperature and the inlet water temperature is greater than the preset temperature difference, the first switch is controlled to be opened and the second switch is controlled to be closed, that is, the water supply filtering of the first filter branch is stopped, and the water supply filtering of the second filter branch is enabled. In this embodiment, the second filter branch can also be enabled to supply water and filter when the first filter branch as the normal filter branch fails, and the water-using equipment can not be shut down due to the maintenance or repair of the first filter branch; in addition, this embodiment can also ensure that the theoretical total flow of the two branches is basically unchanged, that is, the theoretical main flow is basically unchanged, which can more effectively determine whether the first filter branch fails by comparing the size of ΔT and ΔTmax in the case that the heat provided by the water-using equipment is basically unchanged. It can be understood that the embodiment can also be combined with any one or more of the above-mentioned embodiments including the first, second, third and fourth alarm devices.

[0078] In the embodiment of the application, as shown in Figure 3As shown, the first filter branch further comprises a first one-way valve connected after the first filter in the water supply direction; and / or the second filter branch further comprises a second one-way valve connected after the second filter in the water supply direction. By arranging the first one-way valve and the second one-way valve, the problem of large water leakage during maintenance or repair of the first filter branch and / or the second filter branch can be further avoided, and the efficiency of maintenance and repair is further improved.

[0079] In the embodiments of the present application, a temperature control device is also provided, which comprises any one of the water supply filtering systems described above, wherein the water using device comprises a temperature control device, which can comprise a water-cooled cascade refrigeration device, and can also comprise a temperature control device for a three-temperature sorting device, etc.

[0080] The monitoring process realized based on the water supply filtering system described above will be described below through a specific embodiment, as shown in the flowchart of FIG. 6. Figure 4 As shown, the temperature controller starts to run, collects the inlet water temperature Tin and the outlet water temperature Tout of the water using device, presets the inlet water temperature Ts, and presets the preset inlet and outlet water temperature difference ATmax. The monitoring device judges whether the inlet water temperature Tin is less than the preset inlet water temperature Ts. If not, the water temperature abnormality alarm of the water supply device is sent through the fourth alarm device. If yes, it is judged whether the temperature difference between the outlet water temperature Tout and the inlet water temperature Tin is greater than the preset inlet and outlet water temperature difference ATmax. If not, the first switch and the second switch are continuously controlled to keep the current opening degree unchanged for continuous work. If yes, the opening degree of the second switch is increased, and the second filter branch is continuously operated for a preset time t'. The t' can be 20 minutes. The monitoring device further judges whether the temperature difference between the outlet water temperature Tout and the inlet water temperature Tin is greater than the preset inlet and outlet water temperature difference ATmax. If not, the first filter branch fault alarm is sent through the third alarm device, and the maintenance or repair personnel can perform maintenance on the first filter branch, such as cleaning the filter screen of the first filter. If yes, the water flow abnormality alarm of the water supply device is sent through the second alarm device, and the water pump of the water supply device can be checked for abnormalities.

[0081] It should be understood that, although Figure 4 the steps in the flowchart of FIG. 6 are shown in order according to the arrows, these steps are not necessarily executed in order according to the arrows. Unless otherwise explicitly stated herein, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, Figure 4 at least part of the steps in the flowchart of FIG. 6 can comprise multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0082] Corresponding to the water supply filtration system described above, as shown in Figure 5 , the embodiment of the present application also provides a water supply filtration system anomaly detection method, which can be applied to the water supply filtration system as shown in Figure 1 . The water supply filtration system is used to filter the cooling water delivered by the water supply device to the water using device, and the water supply filtration system includes a first filtration branch and a second filtration branch connected in parallel, a first filter is arranged in the first filtration branch, and a second switch and a second filter are connected in the second filtration branch. Taking the water supply filtration system in Figure 1 as an example, the method comprises the following steps:

[0083] S201: Obtain first temperature information, the first temperature information including the first inlet water temperature and / or the first outlet water temperature of the water using device.

[0084] S203: Adjust the opening degree of the second switch based on the first temperature information.

[0085] S205: Obtain the second temperature information after adjustment, the second temperature information including the second inlet water temperature and the second outlet water temperature of the water using device, and determine the anomaly type based on the second temperature information.

[0086] In the embodiment of the present application, the first temperature information includes the first inlet water temperature and / or the first outlet water temperature of the water using device, and the first outlet water temperature and the first inlet water temperature are the outlet water temperature and the inlet water temperature of the water using device obtained before adjusting the second switch. The method for obtaining the first temperature information can refer to the process of detecting the inlet water temperature and the outlet water temperature of the water using device by the temperature detection device described above, which will not be repeated here.

[0087] In step S203, adjusting the opening degree of the second switch based on the first temperature information can include:

[0088] S301: If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than the first preset temperature difference, increase the opening degree of the second switch to a preset target opening degree.

[0089] In the embodiments of the present application, the first preset temperature difference can refer to the aforementioned preset temperature difference, can be set to be the same as the preset temperature difference, or can be set to other thresholds according to actual needs, and the present application does not limit this. If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than the first preset temperature difference, it can be determined that the water flow of the water supply filtration system is abnormal, and then the opening degree of the second switch is increased to the preset target opening degree, so as to further determine the abnormal type subsequently. It can be understood that the adjustment of the opening degree of the second switch based on the first temperature information in step S203 can also include that if the first temperature difference is not greater than the first preset temperature difference, it is determined that the water flow of the water supply filtration system is normal, and the opening degree of the second switch is controlled to remain unchanged.

[0090] Further, the increase of the opening degree of the second switch to the preset target opening degree in step S301 can include:

[0091] S3011: increasing the second switch from the initial opening degree to the preset target opening degree, wherein the range of the initial opening degree is 0-30%, and the range of the preset target opening degree is 50%-100%.

[0092] In step S205, obtaining the adjusted second temperature information can include:

[0093] S401: obtaining the second temperature information after the second switch maintains the preset target opening degree for a preset time.

[0094] In the embodiments of the present application, after the second switch maintains the preset target opening degree for a preset time t', the second temperature information is obtained and the abnormal type is determined based on the second temperature information. After the opening degree of the second switch is increased to the preset target opening degree and maintained for a preset time t', it can be determined whether the abnormality still exists by obtaining the second temperature information after adjusting the second switch, if the abnormality still exists, it can be determined that the water flow of the water supply equipment end is abnormal, and if the abnormality is eliminated, it can be determined that the water flow of the first filtration branch is abnormal. The method of obtaining the second temperature information can refer to the method of obtaining the first temperature information, which will not be described here.

[0095] In the embodiments of the present application, after obtaining the first temperature information, it can be preliminarily judged whether there is an abnormal tendency based on the first temperature information, and the opening degree of the second switch is adjusted based on the first temperature information. After adjusting the opening degree of the second switch, the second temperature information after adjustment is obtained, at this time, due to the change of the opening degree of the second switch, the water flow delivered by the water supply equipment to the water using equipment can also change. Based on the second temperature information, the abnormal type can be more accurately determined, which is convenient for timely maintenance or repair of the water supply filtration system, and can reduce or avoid the loss caused by the abnormality of the water supply system.

[0096] In step S205 of the embodiments of the present application, determining the abnormal type based on the second temperature information includes:

[0097] S501: If the second temperature difference between the second outlet water temperature and the second inlet water temperature is greater than the second preset temperature difference, it is determined that the abnormal type is a water flow abnormality of the water supply device;

[0098] S503: If the second temperature difference is not greater than the third preset temperature difference, it is determined that the abnormal type is a first filter branch fault.

[0099] In the embodiments of the present application, the second temperature difference AT2 is the difference between the second outlet water temperature and the second inlet water temperature of the water using device obtained after adjusting the second switch. The second preset temperature difference ATmax2 and the third preset temperature difference ATmax3 can be set according to the above-mentioned preset temperature difference ATmax, can be set to be the same, or can be set to other values according to actual needs, and the present application does not limit this. The first temperature difference AT1 is compared with the first preset temperature difference ATmax1, if AT1 > ATmax1, the opening degree of the second switch is increased. After increasing the opening degree of the second switch, the time t that the second switch maintains the opening degree is obtained. The time t that the second switch maintains the opening degree is compared with the preset time t', if t > t' and the second temperature difference AT2 is greater than the preset temperature difference ATmax2, it is determined that even if the opening degree of the second switch is controlled to increase the water flow of the second filter branch auxiliary water supply to exceed the preset time t', the water flow fault problem of the water supply filtration system has not been eliminated. In this case, it is determined that the fault position is not the first filter branch, and the fault position should be the water supply device end, and the abnormal type is determined to be a water flow abnormality of the water supply device.

[0100] On the other hand, if the time t that the second switch maintains the opening degree is compared with the preset time t', in the case of t > t' and AT2 ≤ ATmax3, it is determined that the water flow fault problem of the water supply filtration system is eliminated after the opening degree of the second switch is controlled to increase the water flow of the second filter branch auxiliary water supply to exceed the preset time t', and then it is determined that the fault position is the first filter branch, and the abnormal type is determined to be a first filter branch fault. Since the opening degree of the second switch is increased to increase the water flow of the second filter branch auxiliary water supply, the maintenance or repair process of the first filter branch can not stop the normal operation of the water supply device and the water using device. In an embodiment, the preset time t' can be set to 20 minutes.

[0101] In the above-mentioned embodiments, by comparing the second temperature difference with the second preset temperature difference and the third preset temperature difference, the fault position of the water flow abnormality of the water supply filtration system can be timely and accurately located, so that the maintenance personnel can quickly and accurately process the fault position, improve the efficiency and timeliness of fault processing, and also improve the accuracy of abnormal detection of the water supply filtration system.

[0102] In the embodiments of the present application, after obtaining the first temperature information in step S201, it further includes:

[0103] S601: If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a fourth preset temperature difference, it is determined that the abnormal type is a water flow abnormality.

[0104] In the embodiments of the present application, the fourth preset temperature difference ATmax4 can be set with reference to the preset temperature difference ATmax, and can be set to be the same or other values according to actual needs, which is not limited in the present application. The first temperature difference AT1 is compared with the fourth preset temperature difference ATmax4, and if AT1> ATmax4, it can be determined that the water flow of the water supply filtration system is abnormal. In the case of determining that AT1> ATmax4, the opening degree of the second switch can be controlled to increase to increase the water flow of the second filtration branch auxiliary water supply, so as to ensure the continuous normal operation of the water using equipment.

[0105] To further improve the accuracy of the abnormal detection result, in the embodiments of the present application, the first filtration branch further includes a first switch connected with the first filter, and the adjusting the opening degree of the second switch based on the first temperature information further includes:

[0106] S701: If the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a fifth preset temperature difference, the opening degree of the second switch is adjusted to increase, and the opening degree of the first switch is adjusted to decrease.

[0107] In the embodiments of the present application, the fifth preset temperature difference ATmax5 can be set with reference to the preset temperature difference ATmax, and can be set to be the same or other values according to actual needs, which is not limited in the present application. If the first temperature difference AT1 is greater than the fifth preset temperature difference ATmax5, the opening degree of the second switch is adjusted to increase, and the opening degree of the first switch is adjusted to decrease by the same preset opening degree. For example, the first switch can be adjusted from 100% opening degree to 0 opening degree, and the second switch can be adjusted from 0 opening degree to 100% opening degree; or the first switch can be adjusted from 90% opening degree to 10% opening degree, and the second switch can be adjusted from 10% opening degree to 90% opening degree, and the like. This embodiment can ensure that the total flow of the first filtration branch and the second filtration branch is basically unchanged in theory, that is, the main road flow is basically unchanged in theory, which can more effectively determine whether the first filtration branch is faulty by comparing the size of AT1 and ATmax5 under the condition that the heat provided by the water using equipment is basically unchanged.

[0108] It should be understood that although each step in the flowchart involved in the embodiments described above is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, there is no strict order limitation for the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowchart involved in the embodiments described above can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately or alternately executed with at least part of other steps or steps or stages in other steps.

[0109] Based on the same inventive concept, the embodiments of the present application also provide a water supply filtration system anomaly detection device 800 for implementing the above-mentioned water supply filtration system anomaly detection method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more water supply filtration system anomaly detection device embodiments provided below can refer to the limitations of the water supply filtration system anomaly detection method described above, which will not be repeated here.

[0110] In one embodiment, as shown in Figure 6 a water supply filtration system anomaly detection device 800 is provided, comprising:

[0111] a temperature detection module 801, configured to obtain first temperature information and second temperature information, the first temperature information comprising a first water inlet temperature and / or a first water outlet temperature of a water using device, and the second temperature information comprising a second water inlet temperature and a second water outlet temperature of the water using device after adjusting the opening degree of the second switch;

[0112] a switch control module 802, connected with the temperature detection module 801 and the second switch respectively, configured to adjust the opening degree of the second switch based on the first temperature information;

[0113] an anomaly detection module 803, connected with the temperature detection module 801, configured to determine an anomaly type based on the second temperature information.

[0114] Each module in the above water supply filtration system anomaly detection device 800 can be realized by software, hardware and their combinations in whole or in part. The above modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above modules.

[0115] In an embodiment, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, the processor implementing the steps of any of the water supply filtration system anomaly detection methods described above when executing the computer program.

[0116] In an embodiment, a computer readable storage medium is provided, storing a computer program, the computer program implementing the steps of any of the water supply filtration system anomaly detection methods described above when executed by a processor.

[0117] In an embodiment, a computer program product is provided, comprising a computer program, the computer program implementing the steps of any of the water supply filtration system anomaly detection methods described above when executed by a processor.

[0118] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0119] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0120] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0121] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A water supply filtration system abnormality detection method for a water supply filtration system that filters cooling water delivered from a water supply device to a water using device, characterized by, The water supply filtering system comprises a first filtering branch and a second filtering branch arranged in parallel, the first filtering branch is provided with a first filter, the second filtering branch is provided with a second switch and a second filter connected in sequence, and the method comprises the following steps: obtaining first temperature information, the first temperature information comprising a first inlet water temperature and a first outlet water temperature of the water using equipment at present; if a first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a first preset temperature difference, increasing an opening degree of the second switch to a preset target opening degree; after the second switch maintains the preset target opening degree for a preset time, obtaining second temperature information, the second temperature information comprising a second inlet water temperature and a second outlet water temperature of the water using equipment at present; if a second temperature difference between the second outlet water temperature and the second inlet water temperature is greater than a second preset temperature difference, determining that an abnormal type of the water supply filtering system is a water flow abnormality of the water using equipment; if the second temperature difference is not greater than a third preset temperature difference, determining that the abnormal type of the water supply filtering system is a first filtering branch fault.

2. The water supply filter system abnormality detection method according to claim 1, characterized by, The increasing of the opening degree of the second switch to the preset target opening degree comprises: increasing the second switch from an initial opening degree to a preset target opening degree, wherein the initial opening degree ranges from 0 to 30%, and the preset target opening degree ranges from 50% to 100%.

3. The water supply filter system abnormality detection method according to claim 1, characterized by, After the first temperature information is obtained, the method further comprises the following steps: if the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a fourth preset temperature difference, determining that the abnormal type is a water flow abnormality.

4. The water supply filter system abnormality detection method according to any one of claims 1 to 3, characterized by, The first filtering branch further comprises a first switch connected with the first filter, and the adjusting of the opening degree of the second switch based on the first temperature information further comprises the following steps: if the first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a fifth preset temperature difference, adjusting the second switch to increase a preset opening degree, and adjusting the first switch to decrease the preset opening degree.

5. A water supply filtering system abnormality detection device for a water supply filtering system that filters cooling water delivered from a water supply apparatus to a water using apparatus, characterized by, The water supply filtering system comprises a first filtering branch and a second filtering branch arranged in parallel, the first filtering branch is provided with a first filter, the second filtering branch is provided with a second switch and a second filter connected in sequence, and the device comprises: a temperature detection module, configured to obtain first temperature information, the first temperature information comprising a first inlet water temperature and a first outlet water temperature of the water using equipment; the temperature detection module is further configured to obtain second temperature information after the second switch maintains a preset target opening degree for a preset time, the second temperature information comprising a second inlet water temperature and a second outlet water temperature of the water using equipment after the opening degree of the second switch is adjusted; a switch control module, connected with the temperature detection module and the second switch respectively, and configured to increase the opening degree of the second switch to a preset target opening degree if a first temperature difference between the first outlet water temperature and the first inlet water temperature is greater than a first preset temperature difference. An abnormality detection module is connected with the temperature detection module, and is configured to determine that the abnormal type of the water supply filtration system is a water flow abnormality of the water supply equipment if the second temperature difference between the second outlet water temperature and the second inlet water temperature is greater than a second preset temperature difference; and determine that the abnormal type of the water supply filtration system is a first filtration branch fault if the second temperature difference is not greater than a third preset temperature difference.

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