CN113311883A - Pressure barrel failure detection method and device and central water treatment equipment - Google Patents
Pressure barrel failure detection method and device and central water treatment equipment Download PDFInfo
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- CN113311883A CN113311883A CN202110565478.9A CN202110565478A CN113311883A CN 113311883 A CN113311883 A CN 113311883A CN 202110565478 A CN202110565478 A CN 202110565478A CN 113311883 A CN113311883 A CN 113311883A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 272
- 238000001514 detection method Methods 0.000 title claims abstract description 61
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- 108010001267 Protein Subunits Proteins 0.000 claims 1
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- 238000010586 diagram Methods 0.000 description 8
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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Abstract
The embodiment of the specification provides a pressure barrel failure detection method, a pressure barrel failure detection device and central water treatment equipment, wherein the method comprises the following steps: acquiring low-pressure closing time under a specified condition; the low-pressure closing time is the time difference between the starting time of the main machine water preparation and the starting time of the extension water taking under the specified condition; and comparing the low-pressure closing time with a low-pressure closing standard value under the corresponding working condition, and judging whether the pressure barrel fails according to a comparison result. The embodiment of the specification can improve the accuracy of the pressure barrel failure detection.
Description
Technical Field
The specification relates to the technical field of central water treatment equipment, in particular to a pressure barrel failure detection method and device and central water treatment equipment.
Background
The current central authorities water treatment facilities is because lack the means of monitoring pressure bucket rubber inner bag user state, can't in time be detected when the rubber inner bag breaks because of wearing and tearing, and then leads to the sheet metal component to soak easily and rusts, causes extension and water purification pipeline to be polluted by the rust water. Meanwhile, because the installation distances of the stages and the main machine are inconsistent, the water outlet side of the central main machine has fluctuating water flow resistance, and the accurate identification of the use state of the rubber liner of the pressure barrel is more difficult.
Disclosure of Invention
An object of the embodiments of the present specification is to provide a method and an apparatus for detecting failure of a pressure tank, and a central water processing device, so as to improve accuracy of detecting failure of a pressure tank.
To achieve the above object, in one aspect, the present specification provides a method for detecting a failure of a pressure tank, where the method includes:
acquiring low-pressure closing time under a specified condition; the low-pressure closing time is the time difference between the starting time of the main machine water preparation and the starting time of the extension water taking under the specified condition;
and comparing the low-pressure closing time with a low-pressure closing standard value under the corresponding working condition, and judging whether the pressure barrel fails according to a comparison result.
In a preferred embodiment, the comparing the low-pressure closing time with a low-pressure closing standard value under a corresponding working condition, and determining whether the pressure barrel is out of work according to the comparison result includes:
determining the difference value between the low-pressure closing time and a low-pressure closing standard value under the corresponding working condition;
and comparing the difference value with a preset difference value threshold value, and judging whether the pressure barrel fails according to the comparison result.
In a preferred embodiment, the specified condition includes at least one of:
the host is in an idle period;
the pressure barrel is in a full water state.
In a preferred embodiment, before obtaining the low-pressure closing time under the specified condition, the method further comprises:
confirming whether the host is in an idle period;
if the host is in the idle period, determining whether the pressure barrel is in a full water state;
and if the pressure barrel is not in the full water state, the pressure barrel is supplemented with water to the full water state.
In a preferred embodiment, before obtaining the closing time of the low pressure under the specified condition, the method further comprises the following steps:
identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring of the low-pressure closing time under the specified condition comprises the following steps:
and when the pressure barrel is abnormal, acquiring the low-pressure closing time under the specified condition.
In a preferred embodiment, said identifying whether said pressure barrel is abnormal comprises:
confirming whether the number of water charging and discharging times of the pressure barrel reaches the specified number of times;
and if the number of times of water filling and discharging of the pressure barrel reaches the specified number of times, confirming that the pressure barrel is abnormal.
In a preferred embodiment, said identifying whether said pressure barrel is abnormal comprises:
confirming whether the current low-pressure closing time is lower than a low-pressure closing standard value under the corresponding working condition;
and if the current low-pressure closing time is lower than the low-pressure closing standard value under the corresponding working condition, confirming that the pressure barrel is abnormal.
In a preferred embodiment, before obtaining the closing time of the low pressure under the specified condition, the method further comprises the following steps:
and when the pressure barrel is confirmed to be abnormal, updating the low-pressure closing standard value according to the low-pressure closing time historical value under the corresponding working condition.
In a preferred embodiment, the updating the low-pressure closing standard value according to the historical value of the low-pressure closing time under the corresponding working condition includes:
determining the average value of the low-pressure closing time historical values under the corresponding working condition;
and assigning the low-pressure closing standard value as the average value.
In a preferred embodiment, the method further comprises:
and outputting a pressure barrel failure fault prompt when the pressure barrel is determined to be failed according to the comparison result.
On the other hand, this specification embodiment still provides a pressure bucket failure detection device, includes:
the water getting starting detector is used for acquiring the water getting starting time of the extension set under the specified condition;
the water making starting detector is used for acquiring the water making starting time of the host;
the controller is used for acquiring low-pressure closing time under a specified condition; comparing the low-pressure closing time with a low-pressure closing standard value under a corresponding working condition, and judging whether the pressure barrel fails according to a comparison result; the low-pressure closing time is the time difference between the starting time of the main machine water preparation and the starting time of the extension water taking.
In a preferred embodiment, the comparing the low-pressure closing time with a low-pressure closing standard value under a corresponding working condition, and determining whether the pressure barrel is out of work according to the comparison result includes:
determining the difference value between the low-pressure closing time and a low-pressure closing standard value under the corresponding working condition;
and comparing the difference value with a preset difference value threshold value, and judging whether the pressure barrel fails according to the comparison result.
In a preferred embodiment, the specified condition includes at least one of:
the host is in an idle period;
the pressure barrel is in a full water state.
In a preferred embodiment, the controller is further configured to:
before acquiring low-voltage closing time under specified conditions, confirming whether a host is in an idle period;
if the host is in the idle period, determining whether the pressure barrel is in a full water state;
and if the pressure barrel is not in the full water state, the pressure barrel is supplemented with water to the full water state.
In a preferred embodiment, the controller is further configured to:
identifying whether the pressure barrel is abnormal or not before acquiring the low-pressure closing time under the specified condition;
correspondingly, the acquiring of the low-pressure closing time under the specified condition comprises the following steps:
and when the pressure barrel is abnormal, acquiring the low-pressure closing time under the specified condition.
In a preferred embodiment, said identifying whether said pressure barrel is abnormal comprises:
confirming whether the number of water charging and discharging times of the pressure barrel reaches the specified number of times;
and if the number of times of water filling and discharging of the pressure barrel reaches the specified number of times, confirming that the pressure barrel is abnormal.
In a preferred embodiment, said identifying whether said pressure barrel is abnormal comprises:
confirming whether the current low-pressure closing time is lower than a low-pressure closing standard value under the corresponding working condition;
and if the current low-pressure closing time is lower than the low-pressure closing standard value under the corresponding working condition, confirming that the pressure barrel is abnormal.
In a preferred embodiment, the controller is further configured to:
before the low-pressure closing time under the specified condition is obtained, when the pressure barrel is confirmed to be abnormal, the low-pressure closing standard value is updated according to the historical value of the low-pressure closing time under the corresponding working condition.
In a preferred embodiment, the updating the low-pressure closing standard value according to the historical value of the low-pressure closing time under the corresponding working condition includes:
determining the average value of the low-pressure closing time historical values under the corresponding working condition;
and assigning the low-pressure closing standard value as the average value.
In a preferred embodiment, the apparatus further comprises:
and the prompt output unit is used for outputting a pressure barrel failure fault prompt under the control of the controller when the controller confirms that the pressure barrel fails according to the comparison result.
On the other hand, the embodiment of the present specification further provides a central water treatment device, which includes a host and a plurality of extension sets, wherein the host is provided with a pressure barrel, and the host is further provided with the above pressure barrel failure detection device.
According to the technical scheme provided by the embodiment of the specification, when the pressure barrel is identified to be invalid based on the low-pressure closing time, the embodiment of the specification considers that the collected low-pressure closing time is compared with the low-pressure closing standard value under the corresponding working condition, and whether the pressure barrel is invalid is judged according to the comparison result, so that the accuracy of detecting the invalid pressure barrel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort. In the drawings:
FIG. 1 illustrates a block diagram of a central water treatment facility in some embodiments of the present description;
FIG. 2 is a schematic diagram of a host configuration of a central water treatment facility in some embodiments of the present disclosure;
FIG. 3 shows a schematic view of an extension of a central water treatment facility in some embodiments of the present description;
FIG. 4 shows a schematic view of a subset of a central water treatment facility in some embodiments of the present description;
FIG. 5 illustrates a block diagram of a pressure bucket failure detection apparatus in some embodiments of the present description;
FIG. 6 is a schematic diagram illustrating the variation of the low pressure closure time in different states of the pressure barrel in one embodiment of the present disclosure;
FIG. 7 is a schematic diagram illustrating the low pressure closure times of a normal pressure tank versus a failed pressure tank in one embodiment of the disclosure;
FIG. 8 illustrates a flow diagram of a pressure bucket failure detection method in some embodiments of the present description;
FIG. 9 illustrates a flow diagram of the anomaly determination logic in the pressure bucket failure detection method of some embodiments of the present description;
FIG. 10 illustrates a flow diagram of the precision determination logic in a method of pressure bucket failure detection in some embodiments of the present description.
[ description of reference ]
100. A host;
101. a raw water inlet valve;
102. a front filter element;
103. a booster pump;
104. a reverse osmosis membrane;
105. a pressure barrel;
106. a post-positioned filter element;
107. a waste water valve;
108. a high voltage switch;
109. a raw water detection valve;
110. a purified water detection valve;
111. a clean water flow meter;
200. an extension machine;
201. a purified water inlet valve;
202. a warm water tank;
203. a warm water outlet valve;
204. a hot water outlet valve;
205. heating the tank;
51. a controller;
52. a detector is started for taking water;
53. a water making starting detector;
54. and a prompt output unit.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification. For example, in some descriptions, forming the second feature over the first feature may include embodiments in which the first and second features are formed in direct contact, embodiments in which the first and second features are formed in non-direct contact (i.e., additional features may be included between the first and second features), and so on.
Also, for ease of description, some embodiments of the present description may use spatially relative terms such as "above …," "below …," "top," "below," etc., to describe the relationship of one element or component to another (or other) element or component as illustrated in the various figures of the embodiments. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or components described as "below" or "beneath" other elements or components would then be oriented "above" or "over" the other elements or components.
The central water treatment apparatus in the embodiments of the present specification may refer to a central drinking water treatment apparatus. Referring to fig. 1, the central water treatment facility may include a main unit 100 and a plurality of sub-units 200, and the main unit 100 and the sub-units 200 are connected to each other through purified water pipes. The main unit 100 may be a central water production system, and is mainly used to filter and purify raw water (e.g., tap water), so as to output purified water meeting a certain water quality requirement and discharge waste water. The extension 200 may be an extension drinking water system that is primarily used to take water (i.e., provide the user with purified water produced by the host 100 for consumption).
Referring to fig. 2, in some embodiments of the present disclosure, a typical main unit 100 may include a raw water inlet valve 101, a pre-filter 102, a booster pump 103, a reverse osmosis membrane (i.e., RO membrane) 104, a pressure tank 105, a post-filter 106, a waste water valve 107, a high pressure switch 108, and the like. During water production, raw water flows into the pre-filter element 102 through the raw water inlet valve 101 to be subjected to coarse filtration (namely, large granular substances such as silt, rust and eggs in the raw water can be filtered by the pre-filter element 102), coarse filtration water output by the pre-filter element 102 is injected into the reverse osmosis membrane 104 through the booster pump to be subjected to fine filtration (namely, dissolved salts, colloids, microorganisms, organic matter granularity and the like in the coarse filtration water can be filtered by the reverse osmosis membrane 104), so that purified water is formed, the purified water output by the reverse osmosis membrane 104 flows into the pressure barrel 105 through the high-voltage switch 8 to be temporarily stored, meanwhile, the reverse osmosis membrane 104 discharges waste water through the waste water valve 107 until the water level of the pressure barrel 105 reaches the upper water level limit (. When a user takes water through the extension, the purified water in the pressure barrel 105 is filtered by the post-filter element 106 (the filtered water is filtered for the main purpose of improving the taste) and then is output to the extension; since the pressure tank 105 has a limited amount of purified water stored therein, in order to allow the user to continuously use the purified water, the high-voltage switch 108 is turned on for a short time after the user starts to take water through the extension, and the main unit 100 restarts to produce water.
As shown in fig. 2, the main unit 100 may further include a raw water detection valve 109 and a purified water detection valve 110 for performing sampling detection on the raw water and the purified water, respectively, so as to correspondingly obtain data such as Total Dissolved Solids (TDS) of the raw water and TDS of the purified water, and to evaluate the quality of the raw water and the purified water. In addition, the host computer 100 may further include a purified water flow meter 111, which may be used to count the total flow of purified water to provide a reference for subsequently estimating the service life of each filter element (including the pre-filter element 102, the reverse osmosis membrane 104, and the post-filter element 106) of the host computer 100.
The extension of the embodiment of the specification can be a water intake valve (namely a faucet), a water dispenser and other water using terminal equipment. For example, in some embodiments shown in fig. 3, extension 200 may be a plurality of water dispensers. As shown in fig. 4, the water dispenser as the extension 200 may generally include a clean water inlet valve 201, a warm water tank 202, a warm water outlet valve 203, a hot water outlet valve 204 and a hot tank 205. With the clean water feed valve 201 open, clean water from the main unit can be fed into the warm water tank 202. When the user opens the warm water outlet valve 203, warm water (here, normal temperature water) in the warm water tank 202 flows out through the warm water outlet valve 203 for the user to drink. On the premise of starting the heating function, the purified water flowing into the hot tank 205 from the warm water tank 202 can be heated into hot water, and when the user opens the hot water outlet valve 204, the hot water in the hot tank 205 flows out through the hot water outlet valve 204 for the user to drink.
It will be understood by those skilled in the art that the main unit 100 shown in fig. 2 and the sub-unit 200 shown in fig. 4 are only exemplary, and in other embodiments of the present disclosure, the main unit and the sub-unit of the central water treatment apparatus may have other structures, which are not limited in the present disclosure and may be selected according to the needs. For example, taking the extension as an example, in other embodiments of the present description, the hot tank in the extension may be replaced by other suitable heating devices; or on the basis of keeping the hot tank, refrigeration equipment can be added in the extension set, so that a user can use cold water conveniently.
Under most circumstances, because the extension distributes unevenly in physical space for the clean water pipeline that each extension and host computer link to each other is different in length, and the host computer goes out the water side and has undulant water flow resistance easily, thereby is difficult to accurate discernment pressure bucket whether inefficacy. In the embodiments of the present specification, the failure of the pressure barrel refers to the rupture of the rubber liner of the pressure barrel.
In order to solve the problem that it is difficult to accurately identify whether the pressure tank is out of order, the inventors of the present application conducted extensive research and experiments on the main body part of the central water treatment apparatus. Through research and experiments, the following results are found: there is a correlation between the low pressure closure time and the state of the pressure barrel. The low pressure closing time referred to in this specification means: the time difference between the starting time of the water making of the main machine and the starting time of the water taking of the branch machine is considered that the water making of the main machine is started when the water pressure of the purified water is reduced to a certain degree (for example, the pressure is reduced to a certain pressure value); the time difference is referred to as a low-pressure closing time in this specification. For example, taking the central water processing apparatus shown in fig. 1 as an example, if a subset 200 starts to take water at 12:00:00 (i.e., 12 o 'clock 0 min 0 sec), and the master unit 100 starts to make water at 12:00:30 (i.e., 12 o' clock 0 min 30 sec), the corresponding low-pressure closing time is 30 sec.
Thus, the correlation between the low pressure closing time and the state of the pressure barrel may be summarized as: when the pressure barrel does not fail, the low-pressure closing time is basically stable, namely the variation amplitude of the low-pressure closing time is very small; however, once the pressure barrel fails, the pressure closure time can be significantly reduced. For example, in fig. 6, the low pressure closure time is maintained substantially around 30 seconds when the pressure barrel is not failing. Along with the increase of the service time (the increase of the service time is represented by the increase of the number of times of water charging and discharging of the pressure barrel), the rubber liner of the pressure barrel is gradually aged, once the rubber liner of the pressure barrel is flatly broken, the pressure barrel fails, and the low-pressure closing time jumps from a normal value near 30 seconds to be reduced to only about 5-10 seconds.
Further research by the inventors of the present application also found that: the low pressure closing time is also related to the working condition of the central water treatment equipment. Wherein, the working condition can include: the water intake flow and the length of the water purification pipeline between the extension and the host. Specifically, the intake water flow rate is inversely related to the low-pressure closing time, and the purified water pipeline length between the extension and the host is positively related to the low-pressure closing time. For example, the variation of the low pressure closure time for an unvalidated pressure barrel and a failed pressure barrel under part of operating conditions is shown in fig. 7. As can be seen in fig. 7, the low pressure closure time is inversely related to the water intake flow rate (i.e., the initial instantaneous flow rate in fig. 7) and positively related to the fresh water line length between the extension and the host (i.e., the water supply distance in fig. 7), whether for an unsterilized pressure bucket or for a failed pressure bucket. Therefore, when identifying whether the pressure barrel is invalid, the working condition of the central water treatment equipment needs to be considered.
In view of the above, in order to solve the problem that it is difficult to accurately identify whether a pressure barrel is failed, based on the above research findings, the embodiments of the present specification provide a pressure barrel failure detection apparatus based on a low-pressure closing time. Referring to fig. 5, in some embodiments of the present disclosure, the pressure drum failure detection device may include a controller 51, a water intake start detector 52, a water production start detector 53, and the like. Wherein the fetch start detector 52 may be used to obtain the extension fetch start time under specified conditions. The water production start detector 53 is used to acquire a main machine water production start time. The controller 51 may be used to obtain a low pressure closure time under specified conditions; and comparing the low-pressure closing time with a low-pressure closing standard value under the corresponding working condition, and judging whether the pressure barrel fails according to a comparison result. Wherein, the low-pressure closing time under the specified conditions refers to that: and the time difference between the starting time of the main water making and the starting time of the extension water taking under the specified condition. Therefore, when whether the pressure barrel fails or not is identified based on the low-pressure closing time, the embodiment of the specification considers that the collected low-pressure closing time is compared with the low-pressure closing standard value under the corresponding working condition, and whether the pressure barrel fails or not is judged according to the comparison result, so that the accuracy of detecting the failure of the pressure barrel is improved.
In some embodiments of the present disclosure, the water getting on detector may be any suitable detection module, which is not limited in the present disclosure and may be specifically selected according to needs. For example, in one embodiment of the present description, a pressure detection module may be used as a water intake opening detector; when extension water intaking valve was opened, the water purification pressure of host computer side can descend, can gather extension water intaking opening time through the pressure detection module in view of the above. In another embodiment of the present specification, a flow detection module may also be used as a water getting on detector; when extension water intaking valve was opened, the water purification delivery line of host computer side can produce the flow, consequently can gather extension water intaking opening time through flow detection module. For another example, in another embodiment of the present disclosure, the valve position detection module can be used as a water intake opening detector; when the water taking valve of the extension is opened, the working position of the water taking valve can be changed (namely the water taking valve is changed from a closed state to an open state), and accordingly the water taking opening time of the extension can be acquired.
Similarly, in some embodiments of the present specification, the water making activation detector may also be any suitable detection module, which is not limited in this specification, and may be specifically selected according to actual needs. For example, in an embodiment of the present specification, the pressure detection module may be used as a water making start detector; when the extension water intake valve is opened, the purified water pressure at the main machine side can be reduced; according to the preset water making starting condition, when the water pressure of the purified water is reduced to a certain degree, the water making needs to be started, and accordingly the main machine water making starting time can be acquired through the pressure detection module. In another embodiment of the present specification, a flow detection module may also be used as a water making start detector; when extension water intaking valve was opened, the water purification output pipeline of host computer side can produce the flow, according to predetermined system water starting condition, need start system water when the water purification flow reaches a certain value, consequently also can gather host computer system water start-up time through flow detection module.
In some embodiments of the present disclosure, the Controller may include, but is not limited to, a single chip microcomputer, a Micro Control Unit (MCU), a Digital Signal Processor (DSP), a Programmable Logic Controller (PLC), and so on.
In some embodiments of the present disclosure, in order to reduce the implementation cost, some existing components of the central water treatment device may be used as the water intake start detector, the water production start detector and the controller of the pressure barrel failure detection device. Furthermore, certain existing part on the host side can be used as a water taking starting detector and a water making starting detector, so that the structure is simplified, and the implementation cost is further reduced. For example, taking the exemplary embodiment shown in fig. 2 as an example, the purified water flow meter 111 on the host machine 100 side may be used as both the water intake on detector and the water production on detector.
With continued reference to fig. 5, in some embodiments herein, the pressure bucket failure detection apparatus may further include a prompt output unit 54. The prompt output unit 54 may be configured to output a pressure drum failure fault prompt under the control of the controller 51 when the controller 51 confirms that the pressure drum is failed according to the comparison result, that is, pressure drum failure fault prompt information generated by the controller 51 may be sent to the prompt output unit 54, and output by the prompt output unit 54, so as to prompt a user to take measures such as pressure drum replacement. In one embodiment of the present disclosure, the prompt output unit 54 may be a display screen, an audible alarm, a light alarm, and/or the like.
In some embodiments of the present disclosure, the comparing the low-pressure closing time with a low-pressure closing standard value (i.e., a low-pressure closing time standard value) under a corresponding operating condition by the controller, and determining whether the pressure barrel is out of service according to the comparison result may include: the controller determines the difference value between the low-pressure closing time and a low-pressure closing standard value under the corresponding working condition; and comparing the difference value with a preset difference value threshold value, and judging whether the pressure barrel fails according to the comparison result.
In the embodiments of the present specification, the water getting on detector obtains the water getting on time of the extension set under the specified conditions, in order to further improve the accuracy of the pressure barrel failure detection. Wherein, the specified condition may refer to: the host is in an idle period and/or the pressure barrel is in a full water state; the idle period may refer to: the main machine does not produce water and does not take water from the extension machine. The full water state may refer to: the water level of the pressure barrel reaches the upper limit of the water level or the water pressure of the pressure barrel reaches the upper limit of the pressure. When the main machine is used for making water or the extension machines are used for taking water, the fact that the pressure barrel is currently in a non-full water state and the water purification pressure is unstable is indicated, and at the moment, if the extension machines start to take water, the calculated low-pressure closing time is easy to deviate from an actual value. When the pressure barrel is in a non-full water state (for example, the power is suddenly cut off in the main machine water making process, and the pressure barrel does not supplement water to the full water state), if the extension machine starts to fetch water, the calculated low-pressure closing time is smaller than the actual value easily.
For example, in an embodiment of the present specification, the controller may further confirm whether the host is in an idle period before acquiring the low-voltage closing time under the specified condition; if the host is in the idle period, whether the pressure barrel is in a full water state or not can be further confirmed; if the pressure barrel is not in a full water state, the pressure barrel is supplemented with water to the full water state; if the pressure barrel is in a full water state, the low-pressure closing time under the specified condition can be obtained. Of course, if the host is in the non-idle period, the determination may be continued or may wait for a period of time (e.g., several seconds) before determining again (i.e., timed polling). Those skilled in the art will appreciate that the determination of the idle period followed by the full water condition is merely exemplary; the determination of the idle time period and the determination of the full water state do not have specific order requirements, and therefore, in other embodiments of the present specification, the full water state may be determined first and then the idle time period may be determined, or the determination of the idle time period and the determination of the full water state may be performed in parallel, which is not limited in the present specification and may be specifically selected as needed.
In some embodiments of the present description, the controller may further identify whether the pressure tank is abnormal before acquiring the low pressure closing time under the specified condition; when the pressure barrel is abnormal, acquiring low-pressure closing time under a specified condition to identify whether the pressure barrel is invalid or not; only when the pressure barrel is found to be abnormal, whether the pressure barrel is invalid or not is accurately identified; thus, it is possible to contribute to reduction of calculation processing overhead.
In some embodiments of the present description, the identifying whether the pressure bucket is abnormal may include: confirming whether the number of water charging and discharging times of the pressure barrel reaches the specified number of times; and if the number of times of water filling and discharging of the pressure barrel reaches the specified number of times, confirming that the pressure barrel is abnormal. The longer the pressure barrel is used (which can be indirectly represented by the number of water charging and discharging times), the greater the probability of failure; therefore, when the number of times of water filling and draining of the pressure barrel reaches the specified number of times, the pressure barrel can be considered to have a high probability of having an abnormality. If the number of times of water filling and discharging of the pressure barrel does not reach the specified number of times, the judgment can be continued. The number of times of designation may be set in advance according to actual conditions, and may be set to 100 times, 200 times, 300 times, or the like, for example.
In other embodiments of the present description, the identifying whether the pressure barrel is abnormal may also include: confirming whether the current low-pressure closing time is lower than a low-pressure closing standard value under the corresponding working condition; and if the current low-pressure closing time is lower than the low-pressure closing standard value under the corresponding working condition, confirming that the pressure barrel is abnormal. Wherein, the current low-pressure closing time refers to the low-pressure closing time obtained at the current time. The low-pressure closing standard value under the corresponding working condition can be as follows: and after the installation and debugging of the host and the extension are finished, the low-voltage closing time within the preset range is obtained for the first time under the corresponding working condition. If the low-pressure closing time obtained for the first time under the corresponding working condition is obviously not in the preset range, the central water treatment equipment can be subjected to troubleshooting and debugging and can be obtained again.
Performance parameters (such as pressure barrel parameters, water production parameters and the like) of different central water treatment devices are generally different, and the same central water treatment device also has various different working conditions at different periods, so that whether the pressure barrel fails or not is difficult to identify by presetting a low-pressure closing threshold. Therefore, the central water treatment equipment can carry out working condition self-learning so as to obtain more accurate low-pressure closing standard values under different working conditions. Before the low-pressure closing time under the specified condition is acquired, the controller can update the low-pressure closing standard value according to the historical value of the low-pressure closing time under the corresponding working condition when the pressure barrel is confirmed to be abnormal.
In some embodiments of the present disclosure, the updating the low-pressure closing criterion value according to the historical value of the low-pressure closing time under the corresponding operating condition may include: determining the average value of the low-pressure closing time historical values under the corresponding working condition; and assigning the low-pressure closing standard value as the average value. Therefore, the low-pressure closing standard value can be denoised by self-learning under the working condition, so that the low-pressure closing standard value is gradually accurate.
For example, in an embodiment of the present specification, after the central water treatment apparatus is installed, the controller may use the low pressure closing time within the preset range obtained for the first time in each operating condition as the initial low pressure closing time in the operating condition. Then, for each working condition, calculating the average value of the historical values of the low-pressure closing time under the working condition once every time a new low-pressure closing time is obtained, and assigning the low-pressure closing standard value under the working condition as the average value (namely, replacing the previous low-pressure closing standard value under the working condition with the average value); thus, the low-pressure closing standard value is more and more accurate through the working condition self-learning.
For example, in an exemplary embodiment, assume that the central water treatment facility has 6 different operating conditions: A. b, C, D, E, F, the first obtained low pressure closing time under each working condition respectively corresponds to: t isA1、TB1、TC1、TD1、TE1、TF1(ii) a The low-pressure closing standard value under the 6 different working conditions can be updated according to the following formula:
(1) for operating condition A:
according to the formula
Updating a low-pressure closing standard value under the working condition; wherein, TAIs an updated low-pressure closing standard value, T, under the working condition AAiIs the ith low-pressure closing time obtained under the working condition A, and n is the number of the low-pressure closing times under the working condition A.
(2) For condition B:
according to the formula
Updating a low-pressure closing standard value under the working condition; wherein, TBIs updated low-pressure closing standard value, T, under working condition BBiIs the ith low-pressure closing time obtained under the working condition B, and n is the number of the low-pressure closing times under the working condition B.
(3) For condition C:
according to the formula
Updating a low-pressure closing standard value under the working condition; wherein, TCIs updated low-pressure closing standard value, T, under working condition CCiIs the ith low-pressure closing time obtained under the working condition C, and n is the number of the low-pressure closing times under the working condition C.
(4) For operating condition D:
according to the formula
Updating a low-pressure closing standard value under the working condition; wherein, TDIs updated low-pressure closing standard value T under working condition DDiIs the ith low-pressure closing time obtained under the working condition D, and n is the number of the low-pressure closing times under the working condition D.
(5) For operating condition E:
according to the formula
Updating a low-pressure closing standard value under the working condition; wherein, TEIs the updated low-pressure closing standard value, T, under the working condition EEiIs the ith low-pressure closing time obtained under the working condition E, and n is the number of the low-pressure closing times under the working condition E.
(6) For condition F:
according to the formula
Updating a low-pressure closing standard value under the working condition; wherein, TFIs an updated low-pressure closing standard value, T, under the working condition FFiIs the ith low-pressure closing time obtained under the working condition F, and n is the number of the low-pressure closing times under the working condition F.
It should be noted that the above description of the operating condition self-learning process of the central water treatment facility in terms of calculating the mean value of the historical values is not to be construed as the only limitation of the present application. In other embodiments of the present disclosure, other statistical parameters (e.g., median, etc.) of the historical values of the low-pressure closing time under different conditions may be used to describe the condition self-learning process of the central water treatment device. Moreover, in other embodiments of the present description, significant abnormal values (e.g., abnormally large values, abnormally small values, etc.) in the low-pressure closure-time history values may also be culled before updating.
As can be understood by those skilled in the art, the working condition self-learning can also be used for adaptively adjusting the working condition when the central water treatment equipment is changed due to the addition of the extension units, the reduction of the extension units or the change of the position distribution of the extension units relative to the host machine. For example, when the central water treatment device is replaced by a new pressure barrel, the previous working condition self-learning data can be cleared and the working condition self-learning can be carried out again. Of course, according to the needs, the previous working condition self-learning data can also be utilized, so that the calculated amount can be reduced, and the resources can be saved.
In the embodiments of the present description, the difference between the low-pressure closing time and the corresponding low-pressure closing standard value under one condition reflects the deviation degree of the current low-pressure closing time relative to the low-pressure closing standard value under the condition. A larger difference indicates a greater probability of a pressure bucket failure event. Therefore, a proper difference threshold value can be set by counting the comparison data of the normal pressure barrel and the failure pressure barrel under different working conditions so as to judge whether the pressure barrel fails or not.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the units may also be implemented in one or more software and/or hardware when implementing the present description.
In correspondence with the above-described pressure drum failure detection apparatus, the present specification also provides an embodiment of a pressure drum failure detection method, which can be applied to the above-described pressure drum failure detection apparatus side (more specifically, can be applied to the controller side of the above-described pressure drum failure detection apparatus). Referring to FIG. 8, in some embodiments of the present description, the pressure bucket failure detection method may include the steps of:
s801, acquiring low-pressure closing time under specified conditions; and the low-pressure closing time is the time difference between the starting time of the main machine water preparation and the starting time of the extension water taking under the specified condition.
In the embodiments of the present description, the water intake start detector may be used to collect the water intake start time of the extension set under the specified conditions, and the water preparation start detector may be used to collect the water preparation start time of the host set. On the basis, the low-pressure closing time under the specified condition can be obtained by calculating the time difference between the water preparation starting time of the main machine and the water taking starting time of the extension machine under the specified condition.
S802, comparing the low-pressure closing time with a low-pressure closing standard value under the corresponding working condition, and judging whether the pressure barrel fails according to the comparison result.
In embodiments of the present description, the controller may maintain a data table containing low pressure closure criteria values for different operating conditions; when the low-pressure closing time under a certain working condition is obtained, the low-pressure closing standard value under the corresponding working condition can be matched through table look-up.
After the installation and debugging of the main machine and the extension machines of the central water treatment equipment are completed, the lengths of the water purifying pipelines between the main machine and each extension machine are determined. In order to distinguish the water fetches of the individual extensions, each extension may be provided with a water fetch start detector and assigned a unique identifier. Thus, when water getting opening time data provided by a water getting opening detector is received, the clear water pipeline length can be determined through the identifier carried in the data, and the clear water pipeline length and the opened flow data can determine a working condition, so that the working condition corresponding to the currently obtained low-pressure closing time can be identified.
Therefore, in the method embodiment of the specification, when whether the pressure barrel is invalid is identified based on the low-pressure closing time, the collected low-pressure closing time is considered to be compared with the low-pressure closing standard value under the corresponding working condition, and whether the pressure barrel is invalid is judged according to the comparison result, so that the accuracy of detecting the invalid pressure barrel is improved.
In some embodiments of the present disclosure, the comparing the low-pressure closing time with a low-pressure closing standard value under a corresponding operating condition, and determining whether the pressure barrel is out of service according to the comparison result may include: determining the difference value between the low-pressure closing time and a low-pressure closing standard value under the corresponding working condition; and comparing the difference value with a preset difference value threshold value, and judging whether the pressure barrel fails according to the comparison result. When the difference exceeds a difference threshold, a pressure bucket failure may be identified; when the difference is less than the difference threshold, it may be identified that the pressure has not failed; when the difference approaches the difference threshold, an impending pressure failure may be identified.
In some embodiments of the present description, the specified conditions include: the host is in an idle period and/or the pressure barrel is in a full water state.
In some embodiments of the present specification, before obtaining the low-pressure closing time under the specified condition, the method further includes:
confirming whether the host is in an idle period;
if the host is in the idle period, determining whether the pressure barrel is in a full water state;
and if the pressure barrel is not in the full water state, the pressure barrel is supplemented with water to the full water state.
In some embodiments of the present description, before obtaining the low-pressure closing time under the specified condition, the method further includes:
identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring of the low-pressure closing time under the specified condition comprises the following steps:
and when the pressure barrel is abnormal, acquiring the low-pressure closing time under the specified condition.
In some embodiments of the present description, said identifying whether said pressure barrel is abnormal comprises:
confirming whether the number of water charging and discharging times of the pressure barrel reaches the specified number of times;
and if the number of times of water filling and discharging of the pressure barrel reaches the specified number of times, confirming that the pressure barrel is abnormal.
In some embodiments of the present description, said identifying whether said pressure barrel is abnormal comprises:
confirming whether the current low-pressure closing time is lower than a low-pressure closing standard value under the corresponding working condition;
and if the current low-pressure closing time is lower than the low-pressure closing standard value under the corresponding working condition, confirming that the pressure barrel is abnormal.
In some embodiments of the present description, before obtaining the low-pressure closing time under the specified condition, the method further includes:
and when the pressure barrel is confirmed to be abnormal, updating the low-pressure closing standard value according to the low-pressure closing time historical value under the corresponding working condition.
In some embodiments of the present disclosure, the updating the low-pressure closing criterion value according to the historical value of the low-pressure closing time under the corresponding operating condition includes:
determining the average value of the low-pressure closing time historical values under the corresponding working condition;
and assigning the low-pressure closing standard value as the average value.
In some embodiments of the present description, the method further comprises:
and outputting a pressure barrel failure fault prompt when the pressure barrel is determined to be failed according to the comparison result.
In other embodiments of the present description, a pressure bucket failure detection method may include exception determination logic (i.e., pressure bucket exception determination) and precision determination logic (i.e., pressure bucket failure determination).
Referring to fig. 9, in some embodiments of the present disclosure, the abnormality determination logic of the pressure bucket failure detection method may include the following steps:
and S901, acquiring initial low-pressure closing time.
S902, judging whether the initial low-pressure closing time is in a preset range; if not, executing step S903; otherwise, step S904 and the following steps are performed.
And S903, troubleshooting, namely performing fault detection and the like on the central water treatment equipment, and returning to the step S901.
And S904, taking the initial low-pressure closing time as a low-pressure closing standard value.
And S905, judging whether the number of water charging and discharging times of the pressure barrel reaches the specified number. If so, step S907 is performed, otherwise step S906 is performed.
And S906, judging whether the current low-pressure closing time is lower than a low-pressure closing standard value. If the value is lower than the threshold value, the step S907 is executed, otherwise, the step S905 is executed.
And S907, executing accurate judgment logic and updating the low-voltage closing standard value.
Referring to fig. 10, in some embodiments of the present disclosure, the logic for accurately determining the pressure bucket failure detection method may include the following steps:
and S101, starting to execute accurate judgment.
S102, judging whether the host is in an idle period. If yes, go to step S103, otherwise continue to determine.
S103, judging whether the pressure barrel is in a full water state or not. If not, executing step S104, otherwise executing step S105.
And S104, replenishing water to the pressure barrel to be in a full water state.
And S105, acquiring low-pressure closing time in real time, and determining the difference value between the low-pressure closing time and the low-pressure closing standard value under the corresponding working condition.
And S106, judging whether the difference value is larger than the difference value threshold value. If yes, go to step S107, otherwise go to step S108.
And S107, outputting a pressure barrel failure fault prompt.
And S108, entering a normal working mode.
Based on the abnormity judgment logic and the accurate judgment logic, whether the pressure barrel is invalid or not can be accurately identified only when the abnormity of the pressure barrel is found; thus, it is possible to contribute to reduction of calculation processing overhead.
While the process flows described above include operations that occur in a particular order, it should be appreciated that the processes may include more or less operations that are performed sequentially or in parallel (e.g., using parallel processors or a multi-threaded environment).
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. In particular, as for the apparatus and method embodiments, the description is relatively simple as it is substantially similar to the apparatus embodiments, and reference may be made to some descriptions of the apparatus embodiments for related points. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (21)
1. A method of pressure bucket failure detection, the method comprising:
acquiring low-pressure closing time under a specified condition; the low-pressure closing time is the time difference between the starting time of the main machine water preparation and the starting time of the extension water taking under the specified condition;
and comparing the low-pressure closing time with a low-pressure closing standard value under the corresponding working condition, and judging whether the pressure barrel fails according to a comparison result.
2. The method for detecting the failure of the pressure barrel according to claim 1, wherein the step of comparing the low-pressure closing time with a low-pressure closing standard value under the corresponding working condition and judging whether the pressure barrel fails according to the comparison result comprises the following steps:
determining the difference value between the low-pressure closing time and a low-pressure closing standard value under the corresponding working condition;
and comparing the difference value with a preset difference value threshold value, and judging whether the pressure barrel fails according to the comparison result.
3. The pressure bucket failure detection method of claim 1, wherein the specified condition comprises at least one of:
the host is in an idle period;
the pressure barrel is in a full water state.
4. The method of pressure bucket failure detection as claimed in claim 1, further comprising, prior to said obtaining a low pressure closure time under specified conditions:
confirming whether the host is in an idle period;
if the host is in the idle period, determining whether the pressure barrel is in a full water state;
and if the pressure barrel is not in the full water state, the pressure barrel is supplemented with water to the full water state.
5. The pressure bucket failure detection method of claim 1, further comprising, prior to obtaining the low pressure closure time under specified conditions:
identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring of the low-pressure closing time under the specified condition comprises the following steps:
and when the pressure barrel is abnormal, acquiring the low-pressure closing time under the specified condition.
6. The pressure bucket failure detection method of claim 5, wherein said identifying whether the pressure bucket is abnormal comprises:
confirming whether the number of water charging and discharging times of the pressure barrel reaches the specified number of times;
and if the number of times of water filling and discharging of the pressure barrel reaches the specified number of times, confirming that the pressure barrel is abnormal.
7. The pressure bucket failure detection method of claim 5, wherein said identifying whether the pressure bucket is abnormal comprises:
confirming whether the current low-pressure closing time is lower than a low-pressure closing standard value under the corresponding working condition;
and if the current low-pressure closing time is lower than the low-pressure closing standard value under the corresponding working condition, confirming that the pressure barrel is abnormal.
8. The pressure bucket failure detection method of claim 6 or 7, further comprising, prior to obtaining the low pressure closure time under specified conditions:
and when the pressure barrel is confirmed to be abnormal, updating the low-pressure closing standard value according to the low-pressure closing time historical value under the corresponding working condition.
9. The method for detecting failure of a pressure barrel of claim 8, wherein updating the low-pressure closure criterion value based on historical values of low-pressure closure time under corresponding operating conditions comprises:
determining the average value of the low-pressure closing time historical values under the corresponding working condition;
and assigning the low-pressure closing standard value as the average value.
10. The pressure bucket failure detection method of claim 1, further comprising:
and outputting a pressure barrel failure fault prompt when the pressure barrel is determined to be failed according to the comparison result.
11. A pressure bucket failure detection apparatus, comprising:
the water getting starting detector is used for acquiring the water getting starting time of the extension set under the specified condition;
the water making starting detector is used for acquiring the water making starting time of the host;
the controller is used for acquiring low-pressure closing time under a specified condition; comparing the low-pressure closing time with a low-pressure closing standard value under a corresponding working condition, and judging whether the pressure barrel fails according to a comparison result; the low-pressure closing time is the time difference between the starting time of the main machine water preparation and the starting time of the extension water taking.
12. The pressure barrel failure detection device according to claim 11, wherein the comparing the low-pressure closing time with the low-pressure closing standard value under the corresponding working condition and determining whether the pressure barrel fails according to the comparison result comprises:
determining the difference value between the low-pressure closing time and a low-pressure closing standard value under the corresponding working condition;
and comparing the difference value with a preset difference value threshold value, and judging whether the pressure barrel fails according to the comparison result.
13. The pressure bucket failure detection apparatus of claim 11 wherein the specified condition comprises at least one of:
the host is in an idle period;
the pressure barrel is in a full water state.
14. The pressure bucket failure detection apparatus of claim 11, wherein the controller is further configured to:
before acquiring low-voltage closing time under specified conditions, confirming whether a host is in an idle period;
if the host is in the idle period, determining whether the pressure barrel is in a full water state;
and if the pressure barrel is not in the full water state, the pressure barrel is supplemented with water to the full water state.
15. The pressure bucket failure detection apparatus of claim 11, wherein the controller is further configured to:
identifying whether the pressure barrel is abnormal or not before acquiring the low-pressure closing time under the specified condition;
correspondingly, the acquiring of the low-pressure closing time under the specified condition comprises the following steps:
and when the pressure barrel is abnormal, acquiring the low-pressure closing time under the specified condition.
16. The pressure bucket failure detection apparatus of claim 15 wherein said identifying whether said pressure bucket is abnormal comprises:
confirming whether the number of water charging and discharging times of the pressure barrel reaches the specified number of times;
and if the number of times of water filling and discharging of the pressure barrel reaches the specified number of times, confirming that the pressure barrel is abnormal.
17. The method of pressure bucket failure detection apparatus of claim 15, wherein said identifying whether said pressure bucket is abnormal comprises:
confirming whether the current low-pressure closing time is lower than a low-pressure closing standard value under the corresponding working condition;
and if the current low-pressure closing time is lower than the low-pressure closing standard value under the corresponding working condition, confirming that the pressure barrel is abnormal.
18. The pressure bucket failure detection apparatus of claim 16 or 17, wherein the controller is further configured to:
before the low-pressure closing time under the specified condition is obtained, when the pressure barrel is confirmed to be abnormal, the low-pressure closing standard value is updated according to the historical value of the low-pressure closing time under the corresponding working condition.
19. The pressure bucket failure detection device of claim 18, wherein said updating the low-pressure closure criterion value based on the historical value of low-pressure closure time under corresponding operating conditions comprises:
determining the average value of the low-pressure closing time historical values under the corresponding working condition;
and assigning the low-pressure closing standard value as the average value.
20. The pressure bucket failure detection apparatus of claim 11 further comprising:
and the prompt output unit is used for outputting a pressure barrel failure fault prompt under the control of the controller when the controller confirms that the pressure barrel fails according to the comparison result.
21. A central water treatment facility comprising a main unit and a plurality of sub-units, the main unit being provided with a pressure tank, characterized in that the main unit is further provided with a pressure tank failure detection device as claimed in any one of claims 11-20.
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| CN109110842A (en) * | 2018-10-19 | 2019-01-01 | 广东点球电子科技有限公司 | Water purification intelligent control method, device and water purifier |
| CN110498530A (en) * | 2019-08-08 | 2019-11-26 | 长沙三春晖环保设备有限公司 | One kind devil liquor recovery of concentrated base containing aluminium utilizes device |
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