CN113311883B - 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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- CN113311883B CN113311883B CN202110565478.9A CN202110565478A CN113311883B CN 113311883 B CN113311883 B CN 113311883B CN 202110565478 A CN202110565478 A CN 202110565478A CN 113311883 B CN113311883 B CN 113311883B
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- closing time
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000002159 abnormal effect Effects 0.000 claims description 44
- 238000007599 discharging Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000008213 purified water Substances 0.000 description 22
- 239000012528 membrane Substances 0.000 description 8
- 238000001223 reverse osmosis Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000035622 drinking Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The embodiment of the specification provides a method and a device for detecting the failure of a pressure barrel 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 water production by the host and the starting time of water intake by the extension 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 or not according to a comparison result. The embodiment of the specification can improve the accuracy of the failure detection of the pressure barrel.
Description
Technical Field
The present disclosure relates to the field of central water treatment apparatuses, and in particular, to a method and an apparatus for detecting failure of a pressure tank, and a central water treatment apparatus.
Background
The existing central water treatment equipment is lack of means for monitoring the use state of the rubber liner of the pressure barrel, so that the rubber liner cannot be detected in time when being worn and broken, and further sheet metal parts are easy to soak and rust, so that the extension machine and the water purifying pipeline are polluted by rust water. Meanwhile, because the installation distance between each stage and the main machine is inconsistent, the fluctuation water flow resistance exists on the water outlet side of the central main machine, and the use state of the rubber liner of the pressure barrel is more difficult to accurately identify.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a method and an apparatus for detecting failure of a pressure tank, and a central water treatment device, so as to improve accuracy of detecting failure of a seed pressure tank.
To achieve the above object, in one aspect, an embodiment of the present disclosure provides a method for detecting failure of a pressure barrel, the method including:
acquiring low-pressure closing time under a specified condition; the low-pressure closing time is the time difference between the starting time of water production by the host and the starting time of water intake by the extension 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 or not according to a comparison result.
In a preferred embodiment, the 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 includes:
determining a 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 or not according to a 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 the low pressure closing time under the specified conditions is obtained, the method further comprises:
confirming whether the host is in an idle period;
if the host is in an idle period, confirming whether the pressure barrel is in a full water state or not;
and if the pressure barrel is not in a full water state, the pressure barrel is filled with water to the full water state.
In a preferred embodiment, before the low pressure closure time under the specified conditions is obtained, the method further comprises:
identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring the low-voltage 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 water filling and discharging times of the pressure barrel reach the designated times or not;
and if the water filling and discharging times of the pressure barrel reach the designated 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-voltage closing time is lower than a low-voltage 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 the low pressure closure time under the specified conditions is obtained, the method further comprises:
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-voltage closing criterion value according to the low-voltage closing time history value under the corresponding working condition includes:
determining the average value of low-voltage closing time historical values under the corresponding working condition;
and assigning the low-voltage closure standard value as the average value.
In a preferred embodiment, the method further comprises:
and outputting a failure fault prompt of the pressure barrel when the failure of the pressure barrel is confirmed according to the comparison result.
On the other hand, the embodiment of the specification also provides a pressure barrel failure detection device, which comprises:
the water taking opening detector is used for acquiring the opening time of the extension water taking under the specified condition;
the water making start detector is used for acquiring the water starting time of the main mechanism;
the controller is used for acquiring the low-pressure closing time under the specified condition; 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 or not according to a comparison result; the low-pressure closing time is 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 extension machine.
In a preferred embodiment, the 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 includes:
determining a 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 or not according to a 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 the low-voltage closing time under the specified condition, confirming whether the host is in an idle period;
if the host is in an idle period, confirming whether the pressure barrel is in a full water state or not;
and if the pressure barrel is not in a full water state, the pressure barrel is filled with water to the full water state.
In a preferred embodiment, the controller is further configured to:
before acquiring the low-pressure closing time under the specified condition, identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring the low-voltage 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 water filling and discharging times of the pressure barrel reach the designated times or not;
and if the water filling and discharging times of the pressure barrel reach the designated 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-voltage closing time is lower than a low-voltage 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, updating a 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-voltage closing criterion value according to the low-voltage closing time history value under the corresponding working condition includes:
determining the average value of low-voltage closing time historical values under the corresponding working condition;
And assigning the low-voltage closure standard value as the average value.
In a preferred embodiment, the apparatus further comprises:
and the prompt output unit is used for outputting a failure fault prompt of the pressure barrel 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 specification also provides central water treatment equipment, which comprises a host machine and a plurality of extensions, wherein the host machine is provided with a pressure barrel, and the host machine is also provided with the 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 acquired 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 failure of the pressure barrel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some of the embodiments described in the present description, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 illustrates a block diagram of a central water treatment facility in some embodiments of the present description;
FIG. 2 illustrates a schematic diagram of a host configuration of a central water treatment facility in some embodiments of the present disclosure;
FIG. 3 illustrates a schematic view of an extension of a central water treatment facility in some embodiments of the present description;
FIG. 4 is a schematic view showing the construction of an extension of the central water treatment apparatus in some embodiments of the present description;
FIG. 5 illustrates a block diagram of a pressure tank failure detection device in some embodiments of the present disclosure;
FIG. 6 is a schematic diagram showing the change of the closing time of the low pressure in different states of the pressure barrel according to an embodiment of the present disclosure;
FIG. 7 is a diagram showing a low pressure closure time comparison of a normal pressure tank and a failed pressure tank in an embodiment of the present disclosure;
FIG. 8 illustrates a flow chart of a method of pressure barrel failure detection in some embodiments of the present description;
FIG. 9 is a flow chart illustrating anomaly determination logic in a pressure barrel failure detection method of some embodiments of the present disclosure;
fig. 10 is a flow chart illustrating accurate determination logic in a pressure barrel failure detection method according to some embodiments of the present disclosure.
[ reference numerals description ]
100. A host;
101. raw water inlet valve;
102. A filter element is arranged in front;
103. a booster pump;
104. a reverse osmosis membrane;
105. a pressure barrel;
106. a rear filter element;
107. a waste water valve;
108. a high voltage switch;
109. a raw water detection valve;
110. a water purification detection valve;
111. a water purifying flowmeter;
200. an extension;
201. purified water inlet valve;
202. a warm water tank;
203. a warm water outlet valve;
204. a hot water outlet valve;
205. a hot pot;
51. a controller;
52. a water intake opening detector;
53. a water making start detector;
54. and a prompt output unit.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, 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 some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure. For example, in some descriptions, forming a second component over a first component may include embodiments where the first component and the second component are formed in direct contact, may also include embodiments where the first component and the second component are formed in indirect contact (i.e., additional components may also be included between the first component and the second component), and so forth.
Moreover, for ease of description, some embodiments of the present description may use spatially relative terms such as "above" …, "" below "…," "top," "below," and the like to describe one element or component's relationship to another element(s) or component(s) as illustrated in the 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 apparatus 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 through a purified water line. The host 100 may be a central water production system, and is mainly used for filtering and purifying raw water (such as tap water) so as to output purified water meeting a certain water quality requirement and discharge wastewater. The extension 200 may be an extension drinking system that is primarily used to take water (i.e., provide purified water produced by the host 100 to a user for drinking).
As shown in fig. 2, in some embodiments of the present disclosure, a typical host 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, and a high pressure switch 108, among others. When water is produced, raw water flows into the front filter element 102 through the raw water inlet valve 101 to be subjected to rough filtration (namely, sediment, rust, ova and other large particle matters in the raw water can be filtered by utilizing the front filter element 102), rough filtered water output by the front filter element 102 is injected into the reverse osmosis membrane 104 through the booster pump to be subjected to fine filtration (namely, dissolved salts, colloid, microorganisms, organic matter granularity and the like in the rough filtered water can be filtered by utilizing 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-pressure switch 108 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 (or the pressure reaches the upper pressure limit), and the high-pressure switch 108 is closed. When a user takes water through the extension, the purified water in the pressure barrel 105 is filtered by the rear filter element 106 (the filtering is performed with the main purpose of improving the taste) and then is output to the extension; since the pressure tank 105 stores the purified water in a limited amount, the high-voltage switch 108 is turned on for a short time after the user starts taking water through the extension in order that the user can continue to use the purified water, and the main machine 100 resumes the water production.
With continued reference to fig. 2, the host 100 may further include a raw water detection valve 109 and a purified water detection valve 110 for sampling and detecting raw water and purified water pairs, respectively, so that data such as total dissolved solids (Total Dissolved Solids, TDS) and purified water TDS can be correspondingly acquired for evaluating the quality of raw water and purified water. In addition, the host 100 may further include a clean water flow meter 111 that may be used to count the total flow of clean water to provide a reference for subsequent estimation of the service life of the various cartridges (including the pre-cartridge 102, reverse osmosis membrane 104, and post-cartridge 106) of the host 100.
The extension machine of the embodiment of the specification can be water taking valve (namely tap), water dispenser and other water using terminal equipment. For example, in some embodiments shown in fig. 3, the extension 200 may be a plurality of water dispensers. As shown in fig. 4, for the water dispenser as the extension 200, it may generally include a purified 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 inlet valve 201 on, clean water from the host may be injected 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 turning on the heating function, the purified water flowing from the warm water tank 202 into the hot tank 205 may be heated to 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 host 100 shown in fig. 2 and the slave 200 shown in fig. 4 are merely illustrative, and that in other embodiments of the present disclosure, the host and slave of the central water treatment apparatus may have other configurations, which are not limited to this, and may be specifically selected as desired. For example, taking the extension as an example, in other embodiments of the present description, the hot tank in the extension may be replaced with other suitable heating devices; or on the basis of keeping the hot tank, the extension can be additionally provided with refrigeration equipment so as to facilitate the use of cold water by users.
In most cases, the extensions are unevenly distributed in physical space, so that the water purifying pipelines of the extensions connected with the main machine are different in length, and the water outlet side of the main machine is easy to have fluctuating water flow resistance, so that whether the pressure barrel fails or not is difficult to accurately identify. In the embodiment of the present specification, the failure of the pressure barrel means that the rubber liner of the pressure barrel breaks.
In order to solve the problem that it is difficult to accurately identify whether the pressure tub is failed, the inventors of the present application conducted a great deal of research and experiments on the main body part of the central water treatment apparatus. Through research and experiment, it is found that: there is an association between the low pressure closing time and the state of the pressure barrel. The low pressure closure time mentioned in this specification means: the time difference between the main machine water start time and the sub water intake start time is that the main machine starts water production 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 above time difference is referred to herein as the low pressure closure time. For example, taking the central water treatment apparatus shown in fig. 1 as an example, if a subset 200 starts to take water at 12:00:00 (i.e. 12 points 0 minutes 0 seconds), the host 100 starts to make water at 12:00:30 (i.e. 12 points 0 minutes 30 seconds), and the corresponding low-pressure closing time is 30 seconds.
As such, the existence of the association relationship between the low pressure closing time and the state of the pressure barrel can be summarized as: when the pressure barrel is not in failure, the low-pressure closing time is basically stable, namely the variation amplitude of the low-pressure closing time is small; however, once the pressure barrel fails, the pressure closure time can be significantly reduced. For example, in fig. 6, when the pressure barrel is not failing, the low pressure closure time is maintained substantially around 30 seconds. With the increase of the service time (the increase of the service time is represented by the increase of the water filling and draining times of the pressure barrel), the rubber liner of the pressure barrel is aged gradually, once the rubber liner of the pressure barrel is broken, the pressure barrel is invalid, and the low-pressure closing time is reduced from a normal value around 30 seconds to about 5-10 seconds in a jump way.
Further studies by the inventors of the present application have also found that: the low-pressure closing time is also associated with the working condition of the central water treatment equipment. Wherein, the working conditions may include: the water intake flow and the length of the purified water pipeline between the extension and the host. Specifically, the water intake flow is inversely related to the low pressure closing time, and the length of the purified water pipeline between the extension and the host is inversely related to the low pressure closing time. For example, the low pressure closure time variation for an unspent pressure tank and an failing pressure tank under partial operating conditions is shown in fig. 7. As can be seen from 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) for both the non-failed pressure tank and the failed pressure tank, and is positively related to the length of the clean water line between the extension and the host (i.e., the water supply distance in fig. 7). It follows that the working condition of the central water treatment device needs to be considered when identifying whether the pressure barrel is out of order.
In view of this, in order to solve the problem that it is difficult to accurately identify whether the pressure tank is failed, based on the above findings, the embodiments of the present specification provide a pressure tank failure detection device based on a low pressure closing time. Referring to fig. 5, in some embodiments of the present specification, the pressure tank failure detection means may include a controller 51, a water intake opening detector 52, a water making start detector 53, and the like. Wherein the water intake opening detector 52 may be used to obtain an extension water intake opening time under specified conditions. The water making start detector 53 is used to acquire the main mechanism water 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 or not according to a comparison result. Wherein, the low pressure closing time under the specified conditions refers to: the time difference between the main mechanism water start time and the extension water intake start time under the appointed condition. Therefore, 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 judges whether the pressure barrel is invalid 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 intake opening detector may be any suitable detection module, which is not limited in this disclosure, and may be specifically selected according to needs. For example, in one embodiment of the present disclosure, a pressure detection module may be used as the water intake opening detector; when the extension water taking valve is opened, the water purifying pressure of the host side can be reduced, and accordingly the extension water taking opening time can be acquired through the pressure detection module. In another embodiment of the present disclosure, a flow detection module may also be used as the water intake opening detector; when the extension water taking valve is opened, the purified water output pipeline of the host side can generate flow, so that the extension water taking opening time can be acquired through the flow detection module. For another example, in yet another embodiment of the present disclosure, a valve position detection module may also be used as the water intake opening detector; when the water intake valve of the extension set is opened, the working position of the water intake valve will change (that is, the water intake valve is changed from the closed state to the open state), so that the opening time of the water intake of the extension set can be collected.
Also, in some embodiments of the present disclosure, the water making start detector may be any suitable detection module, which is not limited in this disclosure, and may be specifically selected according to actual needs. For example, in one embodiment of the present disclosure, a pressure detection module may be used as the water-making start detector; when the extension water taking valve is opened, the purified water pressure at the host side is reduced; according to preset water making starting conditions, when the water pressure of the purified water is reduced to a certain extent, water making needs to be started, and accordingly the starting time of the main machine water making can be acquired through the pressure detection module. In another embodiment of the present specification, a flow rate detection module may also be used as the water making start detector; when the extension water taking valve is opened, the water purifying output pipeline of the host machine side can generate flow, and according to preset water preparing starting conditions, water preparing needs to be started when the water purifying flow reaches a certain value, so that the starting time of water preparing of the host machine can be acquired through the 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 (Microcontroller Unit, abbreviated as MCU), a digital signal processor (Digital Signal Processing, abbreviated as DSP), a programmable logic controller (Programmable Logic Controller, abbreviated as PLC), and the like.
In some embodiments of the present disclosure, in order to reduce implementation costs, it is possible to utilize as much of the existing components of the central water treatment facility as the water intake start detector, water production start detector and controller of the pressure tank failure detection device described above. Furthermore, an existing part of the host side can be used as a water taking start detector and a water making start 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 water intake start detector and the water production start detector may be combined by the water purification flow meter 111 on the host 100 side.
With continued reference to fig. 5, in some embodiments of the present disclosure, the pressure tank failure detection apparatus may further include a prompt output unit 54. The prompt output unit 54 may be configured to output a failure prompt of the pressure barrel under the control of the controller 51 when the controller 51 confirms that the pressure barrel fails according to the comparison result, that is, the failure prompt information of the pressure barrel generated by the controller 51 may be sent to the prompt output unit 54, and the prompt output unit 54 outputs the failure prompt to prompt the user to perform countermeasures such as replacement of the pressure barrel in time. In an embodiment of the present disclosure, the prompt output unit 54 may be a display screen, an audible alarm, and/or a light alarm.
In some embodiments of the present disclosure, the controller compares the low pressure closing time with a low pressure closing standard value (i.e. a low pressure closing time standard value) under a corresponding working condition, and determines whether the pressure barrel fails according to a comparison result, which 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 or not according to a comparison result.
In the embodiment of the present specification, the water intake opening detector acquires the extension water intake opening time under the specified condition in order to further improve the accuracy of the pressure tank 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 prepare water and does not have an extension to take water. The full water state may refer to: the water level of the pressure barrel reaches the upper water level limit or the water pressure of the pressure barrel reaches the upper pressure limit. When the host machine is in water making or the extension machine is in water taking, the pressure barrel is in a non-full water state at present, and the water purifying pressure is unstable, and at the moment, if the extension machine is started 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, power is suddenly lost in the water making process of the main machine, and the pressure barrel is not filled with water to a full water state), if the extension machine is started to take water, the calculated low-pressure closing time is easy to be smaller than the actual value.
For example, in an embodiment of the present disclosure, 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 an idle period, further confirming whether the pressure barrel is in a full water state; if the pressure barrel is not in a full water state, the pressure barrel is filled 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 a non-idle period, it may continue to determine or wait for a period of time (e.g., several seconds) before determining again (i.e., timing poll). Those skilled in the art will appreciate that determining an idle period and then a full water condition is merely exemplary; the determination of the idle period and the determination of the full water state are not required in a specific order, and therefore, in other embodiments of the present specification, the full water state may be determined first and then the idle period may be determined, or the determination of the idle period and the determination of the full water state may be performed in parallel, which is not limited in this specification, and may be specifically selected according to needs.
In some embodiments of the present disclosure, the controller may further identify whether the pressure vessel 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; namely, only when the pressure barrel is found to be abnormal, accurately identifying whether the pressure barrel is invalid or not; in this way, computational processing overhead may be advantageously reduced.
In some embodiments of the present description, the identifying whether the pressure tank is abnormal may include: confirming whether the water filling and discharging times of the pressure barrel reach the designated times or not; and if the water filling and discharging times of the pressure barrel reach the designated times, confirming that the pressure barrel is abnormal. The longer the pressure barrel is used (which can be indirectly represented by the number of times of water filling and discharging), the greater the probability of failure; therefore, when the number of times of filling and discharging the pressure tank reaches the specified number of times, it can be considered that there is a high probability that the pressure tank is abnormal. If the water charging and discharging times of the pressure barrel do not reach the designated times, the judgment can be continued. The number of times of the designation may be set in advance according to the actual situation, and may be set to 100 times, 200 times, 300 times, or the like, for example.
In other embodiments of the present disclosure, the identifying whether the pressure vessel is abnormal may also include: confirming whether the current low-voltage closing time is lower than a low-voltage 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. The current low-voltage closing time refers to the low-voltage closing time obtained by the current time. The low-pressure closing standard value under the corresponding working condition can be: after the installation and debugging of the host and the extension are completed, the low-voltage closing time which is located in a preset range and is obtained for the first time under the corresponding working condition is obtained. If the low-pressure closing time obtained for the first time under the corresponding working condition is obviously not in the preset range, the fault of the central water treatment equipment can be checked and debugged, and the low-pressure closing time is obtained again.
The performance parameters (such as the parameters of the pressure barrel, the water making parameters and the like) of different central water treatment equipment are generally different, and the same central water treatment equipment also has various different working conditions in different periods, so that whether the pressure barrel fails or not is difficult to identify by presetting a low-pressure closing threshold value. Therefore, the central water treatment equipment can perform working condition self-learning so as to obtain more accurate low-pressure closing standard values under different working conditions. The controller can update the low-pressure closing standard value according to the low-pressure closing time historical value under the corresponding working condition when the abnormality of the pressure barrel is confirmed before the low-pressure closing time under the specified condition is acquired.
In some embodiments of the present disclosure, the updating the low-voltage closing criterion value according to the low-voltage closing time history value under the corresponding working condition may include: determining the average value of low-voltage closing time historical values under the corresponding working condition; and assigning the low-voltage closure standard value as the average value. Therefore, through the working condition self-learning, the low-voltage closed standard value can be denoised, so that the low-voltage closed standard value is more accurate.
For example, in one embodiment of the present disclosure, after the central water treatment apparatus is installed, the controller may take the low pressure closing time, which is first obtained under each working condition and is within a preset range, as the initial low pressure closing time under the working condition. Thereafter, for each operating condition, calculating a mean value of the low-pressure closing time history value under the operating condition once every new low-pressure closing time is obtained, and assigning the low-pressure closing standard value under the operating condition as the mean value (i.e. replacing the previous low-pressure closing standard value under the operating condition with the mean value); thus, by self-learning of the working condition, the low-voltage closing standard value is more and more accurate.
For example, in one exemplary embodiment, assume that the central water treatment facility has 6 different operating conditions: A. b, C, D, E, F, the low-pressure closing time obtained for the first time under each working condition corresponds to:T A1 、T B1 、T C1 、T D1 、T E1 、T F1 the method comprises the steps of carrying out a first treatment on the surface of the The low pressure closure criteria for these 6 different operating conditions may be updated in accordance with the following equation:
(1) For operating condition a:
according to the formulaUpdating a low-voltage closing standard value under the working condition; wherein T is A Is the updated low-voltage closed standard value under the working condition A, T Ai The i-th low-pressure closing time obtained under the working condition A is obtained, and n is the number of the low-pressure closing times under the working condition A.
(2) For operating condition B:
according to the formulaUpdating a low-voltage closing standard value under the working condition; wherein T is B Is the updated low-voltage closed standard value under the working condition B, T Bi The ith low-pressure closing time is obtained under the working condition B, and n is the number of the low-pressure closing times under the working condition B.
(3) For operating condition C:
according to the formulaUpdating a low-voltage closing standard value under the working condition; wherein T is C Is the updated low-voltage closed standard value under the working condition C, T Ci The ith low-pressure closing time is 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 formulaUpdating a low-voltage closing standard value under the working condition; wherein T is D Is the updated low-voltage closed standard value under the working condition D，T Di The ith low-pressure closing time is 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 formulaUpdating a low-voltage closing standard value under the working condition; wherein T is E Is updated low-voltage closed standard value T under working condition E Ei The i-th low-pressure closing time is obtained under the working condition E, and n is the number of the low-pressure closing times under the working condition E.
(6) For operating condition F:
according to the formulaUpdating a low-voltage closing standard value under the working condition; wherein T is F Is updated low-voltage closed standard value under working condition F, T Fi The i-th low-pressure closing time obtained under the working condition F is obtained, 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 self-learning process of the working condition of the central water treatment apparatus by taking the calculation of the average value of the historical values as an example should not 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 low pressure closure time history under different operating conditions may also be used to describe the operating self-learning process of the central water treatment facility. Furthermore, in other embodiments of the present description, significant outliers (e.g., outliers that are small, etc.) in the low-pressure closure time history may also be culled prior to updating.
It can be understood by those skilled in the art that when the central water treatment device changes due to the increase of the extensions, the decrease of the extensions, or the change of the position distribution of the extensions relative to the main machine, the self-learning of the working condition can also adaptively adjust the working condition. For example, when the central water treatment facility replaces a new pressure vessel, the previous operating condition self-learning data may be cleared and the operating condition self-learning may be re-performed. Of course, the self-learning data of the previous working condition can be utilized as required, so that the calculated amount can be reduced and the resources can be saved.
In the embodiment of the present disclosure, the difference between the low-pressure closing time under one working condition and the corresponding low-pressure closing standard value reflects the deviation degree of the current low-pressure closing time under the working condition relative to the low-pressure closing standard value. And when the difference value is larger, a larger probability of occurrence of the failure event of the pressure barrel is indicated. Therefore, a proper difference threshold 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 functionally divided into various units, respectively. Of course, the functions of each unit may be implemented in one or more pieces of software and/or hardware when implementing the present description.
In correspondence with the above-described pressure-tank failure detection device, the present specification also provides an embodiment of a pressure-tank failure detection method that can be applied to the above-described pressure-tank failure detection device side (more specifically, to the controller side of the above-described pressure-tank failure detection device). Referring to fig. 8, in some embodiments of the present specification, the pressure tank failure detection method may include the steps of:
s801, acquiring low-voltage closing time under a specified condition; the low-pressure closing time is the time difference between the starting time of water production by the host and the starting time of water intake by the extension 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 under the specified conditions, and the water preparation start detector may be used to collect the main machine water start time. On the basis, the low-pressure closing time under the specified condition can be obtained by calculating the time difference between the starting time of the main machine water and the starting time of the extension water 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 or not according to a comparison result.
In the embodiments of the present disclosure, 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 lookup.
After the installation and debugging of the main machine and the extension machines of the central water treatment equipment are finished, the length of the purified water pipeline between the main machine and each extension machine is determined. To distinguish between the water intakes of the respective extensions, a water intake opening detector may be provided for each extension and a unique identifier may be assigned. Therefore, when the water intake opening time data provided by the water intake opening detector is received, the length of the water purifying pipeline can be determined through the identifier carried in the data, and the working condition can be determined through the length of the water purifying pipeline and the flow data after opening, so that the working condition corresponding to the low-pressure closing time obtained currently can be identified.
Therefore, in the method embodiment of the specification, when the pressure barrel is identified to be invalid based on the low-pressure closing time, the acquired 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 failure of the pressure barrel is improved.
In some embodiments of the present disclosure, 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 failed according to a comparison result may include: determining a 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 or not according to a comparison result. When the difference exceeds a difference threshold, it may be identified as a pressure barrel failure; when the difference is less than the difference threshold, it may be identified that the pressure is not failing; when the difference approaches the difference threshold, a pressure impending failure may be identified.
In some embodiments of the present specification, the specified conditions include: the host is in an idle period and or the pressure tank is in a full state.
In some embodiments of the present disclosure, before the acquiring 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 an idle period, confirming whether the pressure barrel is in a full water state or not;
and if the pressure barrel is not in a full water state, the pressure barrel is filled with water to the full water state.
In some embodiments of the present description, before the low pressure closure time under the specified condition is obtained, the method further comprises:
identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring the low-voltage 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, the identifying whether the pressure barrel is abnormal includes:
confirming whether the water filling and discharging times of the pressure barrel reach the designated times or not;
and if the water filling and discharging times of the pressure barrel reach the designated times, confirming that the pressure barrel is abnormal.
In some embodiments of the present description, the identifying whether the pressure barrel is abnormal includes:
confirming whether the current low-voltage closing time is lower than a low-voltage 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 the low pressure closure time under the specified condition is obtained, the method further comprises:
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-voltage closing criterion value according to the low-voltage closing time history value under the corresponding working condition includes:
determining the average value of low-voltage closing time historical values under the corresponding working condition;
and assigning the low-voltage closure standard value as the average value.
In some embodiments of the present description, the method further comprises:
and outputting a failure fault prompt of the pressure barrel when the failure of the pressure barrel is confirmed according to the comparison result.
In other embodiments of the present disclosure, the pressure tank failure detection method may include anomaly determination logic (i.e., pressure tank anomaly determination) and accurate determination logic (i.e., pressure tank failure determination).
Referring to fig. 9, in some embodiments of the present disclosure, the abnormality determination logic of the pressure tank failure detection method may include the steps of:
s901, acquiring initial low-voltage closing time.
S902, judging whether the initial low-voltage closing time is within a preset range; if not, executing step S903; otherwise, step S904 and the following steps are performed.
S903, troubleshooting, namely, performing fault detection and the like on the central water treatment equipment, and returning to the step S901.
S904, taking the initial low-voltage closing time as a low-voltage closing standard value.
S905, judging whether the water charging and discharging times of the pressure barrel reach the designated times. If so, step S907 is performed, otherwise step S906 is performed.
S906, judging whether the current low-voltage closing time is lower than a low-voltage closing standard value. If it is lower, step S907 is performed, otherwise step S905 is performed in a jump.
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 accurate determination logic of the pressure tank failure detection method may include the following steps:
s101, starting to execute accurate judgment.
S102, judging whether the host is in an idle period. If yes, step S103 is executed, otherwise the judgment is continued.
S103, judging whether the pressure barrel is in a full water state or not. If not, step S104 is performed, otherwise step S105 is performed.
S104, the pressure barrel is filled with water to a full water state.
S105, acquiring the 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.
S106, judging whether the difference value is larger than a difference value threshold value. If yes, step S107 is executed, otherwise step S108 is executed.
And S107, outputting a failure fault prompt of the pressure barrel.
S108, entering a normal working mode.
Based on the abnormality judgment logic and the accurate judgment logic, whether the pressure barrel fails or not can be accurately identified only when the pressure barrel is found to be abnormal; in this way, computational processing overhead may be advantageously reduced.
While the process flows described above include a plurality of operations occurring in a particular order, it should be apparent that the processes may include more or fewer operations, which may be performed sequentially or in parallel (e.g., using a parallel processor or a multi-threaded environment).
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. In particular, for the apparatus and method embodiments, the description is relatively simple, as it is substantially similar to the apparatus embodiments, with reference to the section of the apparatus embodiments being relevant. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 the embodiments of the present specification. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (19)
1. A method of pressure barrel 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 water production by the host and the starting time of water intake by the extension under the specified condition;
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 or not according to a comparison result;
wherein the specified condition includes at least one of the host being in an idle period and the pressure barrel being in a full water state; the low-voltage closing standard value under the corresponding working condition comprises low-voltage closing time which is firstly obtained under the corresponding working condition and is positioned in a preset range after the installation and debugging of the host and the extension are finished.
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 steps of:
Determining a 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 or not according to a comparison result.
3. The pressure tank failure detection method according to claim 1, further comprising, before the acquisition of the low-pressure closing time under the specified condition:
confirming whether the host is in an idle period;
if the host is in an idle period, confirming whether the pressure barrel is in a full water state or not;
and if the pressure barrel is not in a full water state, the pressure barrel is filled with water to the full water state.
4. The pressure tank failure detection method according to claim 1, further comprising, before acquiring the low pressure closing time under the specified condition:
identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring the low-voltage 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.
5. The pressure barrel failure detection method of claim 4, wherein the identifying whether the pressure barrel is abnormal comprises:
confirming whether the water filling and discharging times of the pressure barrel reach the designated times or not;
And if the water filling and discharging times of the pressure barrel reach the designated times, confirming that the pressure barrel is abnormal.
6. The pressure barrel failure detection method of claim 4, wherein the identifying whether the pressure barrel is abnormal comprises:
confirming whether the current low-voltage closing time is lower than a low-voltage 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.
7. The pressure tank failure detection method according to claim 5 or 6, further comprising, before acquiring the low pressure closing time under the specified condition:
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.
8. The method for detecting the failure of the pressure barrel according to claim 7, wherein the updating the low-pressure closing standard value according to the low-pressure closing time history value under the corresponding working condition comprises:
determining the average value of low-voltage closing time historical values under the corresponding working condition;
and assigning the low-voltage closure standard value as the average value.
9. The pressure barrel failure detection method of claim 1, further comprising:
And outputting a failure fault prompt of the pressure barrel when the failure of the pressure barrel is confirmed according to the comparison result.
10. A pressure barrel failure detection apparatus, comprising:
the water taking opening detector is used for acquiring the opening time of the extension water taking under the specified condition;
the water making start detector is used for acquiring the water starting time of the main mechanism;
the controller is used for acquiring the low-pressure closing time under the specified condition; 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 or not according to a comparison result; the low-pressure closing time is the time difference between the starting time of water making of the main machine and the starting time of water taking of the extension machine;
wherein the specified condition includes at least one of the host being in an idle period and the pressure barrel being in a full water state; the low-voltage closing standard value under the corresponding working condition comprises low-voltage closing time which is firstly obtained under the corresponding working condition and is positioned in a preset range after the installation and debugging of the host and the extension are finished.
11. The pressure tank failure detection apparatus as claimed in claim 10, wherein the comparing the low pressure closing time with a low pressure closing standard value under the corresponding working condition, and judging whether the pressure tank fails according to the comparison result, comprises:
Determining a 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 or not according to a comparison result.
12. The pressure barrel failure detection apparatus of claim 10, wherein the controller is further configured to:
before acquiring the low-voltage closing time under the specified condition, confirming whether the host is in an idle period;
if the host is in an idle period, confirming whether the pressure barrel is in a full water state or not;
and if the pressure barrel is not in a full water state, the pressure barrel is filled with water to the full water state.
13. The pressure barrel failure detection apparatus of claim 10, wherein the controller is further configured to:
before acquiring the low-pressure closing time under the specified condition, identifying whether the pressure barrel is abnormal;
correspondingly, the acquiring the low-voltage 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.
14. The pressure barrel failure detection apparatus of claim 13, wherein the identifying whether the pressure barrel is abnormal comprises:
Confirming whether the water filling and discharging times of the pressure barrel reach the designated times or not;
and if the water filling and discharging times of the pressure barrel reach the designated times, confirming that the pressure barrel is abnormal.
15. The pressure barrel failure detection apparatus of claim 13, wherein the identifying whether the pressure barrel is abnormal comprises:
confirming whether the current low-voltage closing time is lower than a low-voltage 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.
16. The pressure barrel failure detection apparatus of claim 14 or 15, 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, updating a low-pressure closing standard value according to the low-pressure closing time historical value under the corresponding working condition.
17. The pressure tank failure detection apparatus according to claim 16, wherein the updating of the low-pressure closure criterion value according to the low-pressure closure time history value under the corresponding operating condition includes:
determining the average value of low-voltage closing time historical values under the corresponding working condition;
And assigning the low-voltage closure standard value as the average value.
18. The pressure barrel failure detection apparatus of claim 10, further comprising:
and the prompt output unit is used for outputting a failure fault prompt of the pressure barrel under the control of the controller when the controller confirms that the pressure barrel fails according to the comparison result.
19. A central water treatment facility comprising a main unit and a plurality of extensions, said main unit being provided with a pressure barrel, characterized in that said main unit is further provided with a pressure barrel failure detection device according to any one of claims 10-18.
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| 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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