CN118345901A - Multi-tank energy storage compensation device, water supply system, method and medium thereof - Google Patents
Multi-tank energy storage compensation device, water supply system, method and medium thereof Download PDFInfo
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- CN118345901A CN118345901A CN202410783775.4A CN202410783775A CN118345901A CN 118345901 A CN118345901 A CN 118345901A CN 202410783775 A CN202410783775 A CN 202410783775A CN 118345901 A CN118345901 A CN 118345901A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 449
- 238000004146 energy storage Methods 0.000 title claims abstract description 224
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000001105 regulatory effect Effects 0.000 claims description 106
- 230000002457 bidirectional effect Effects 0.000 claims description 105
- 238000012423 maintenance Methods 0.000 claims description 71
- 230000005059 dormancy Effects 0.000 claims description 25
- 230000033228 biological regulation Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 13
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 description 6
- 239000002775 capsule Substances 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/02—Public or like main pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/072—Arrangement of flowmeters
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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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
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of water supply, in particular to a multi-tank energy storage compensation device, a water supply system, a method and a medium thereof. The invention solves the problems that the existing water supply system can not meet the water inlet compensation requirement and can not judge the tank fault condition, and has the advantages of fully guaranteeing the safety and stability of the water supply system and realizing energy conservation.
Description
Technical Field
The invention relates to the technical field of water supply, in particular to a multi-tank energy storage compensation device, a water supply system, a water supply method and a medium thereof.
Background
Along with the acceleration of the urbanization process and the development of the secondary water supply industry, the requirements of users on the energy conservation, the safety and the stability of the water supply equipment system are higher. The traditional pipe network pressure-superposed non-negative pressure type water supply equipment is often only provided with one steady flow tank and has no water inlet compensation function, in addition, the traditional pipe network pressure-superposed non-negative pressure type water supply equipment is provided with only one small air pressure tank at the water outlet end, the small flow pressure-retaining capacity is limited, the pump is frequently started and stopped in a water low peak period, the energy is not saved, the damage to the pump is large, the abnormal condition of the damage of the capsule in the tank body or the insufficient air pressure cannot be effectively judged, and the water supply safety is uncertain.
At present, a slightly advanced technology adopts a water inlet compensation tank, but the compensation volume is limited during working, the required compensation time cannot be met, the municipal water inlet pressure is quickly reduced under a large flow, the change of the water inlet pressure directly can transfer and influence the stability of the water outlet pressure, and even the system is triggered to be frequently started and stopped. Meanwhile, the water hammer is usually weakened or eliminated by a water hammer eliminator in the process of frequent start and stop of a pump or abnormal high pressure of a system, and the like, so that the risk of pipe explosion of a pipeline is reduced, but the water hammer is also actually energy, and is a novel energy-saving mode if the energy can be effectively utilized.
Disclosure of Invention
The invention aims to provide a multi-tank energy storage compensation device, a water supply system, a method and a medium thereof, which solve the problems that the existing water supply system cannot meet the water inlet compensation requirement and the failure condition of a tank body cannot be judged, so as to fully ensure the safety and stability of the water supply system and realize the purpose of energy conservation.
The invention provides a multi-tank energy storage compensation device which is characterized by comprising a first maintenance valve, a first electric valve, a compensation tank, a second maintenance valve, a second electric valve, a first pressure reducing valve, a third electric valve, a two-way regulation tank, a fourth electric valve, a third maintenance valve, a one-way valve, an energy storage tank, a second pressure reducing valve, a fifth electric valve, a sixth electric valve and a fourth maintenance valve, wherein the first maintenance valve is connected with the first electric valve, the first electric valve is connected in two ways, one way is connected with the compensation tank, and the other way is connected with the second maintenance valve; the second maintenance valve is connected with the second electric valve, the second electric valve is connected in two paths, one path is connected with the first pressure reducing valve, the other path is connected with the third electric valve, the first pressure reducing valve is connected in three paths, the other path is connected with the third electric valve, the other path is connected with the bidirectional regulating tank, and the other path is connected with the fourth electric valve; the fourth electric valve is connected with the third maintenance valve; the third maintenance valve is divided into three paths of connection, one path of connection is connected with the one-way valve, one path of connection is connected with the fifth electric valve, one path of connection is connected with the sixth electric valve, the one-way valve is connected with the energy storage tank, the fifth electric valve is connected with the energy storage tank through the second pressure reducing valve, the sixth electric valve is connected with the fourth maintenance valve, a compensation tank air pressure sensor is arranged on the compensation tank body, a bidirectional regulation tank air pressure sensor is arranged on the bidirectional regulation tank body, and an energy storage tank air pressure sensor is arranged on the energy storage tank body; the first maintenance valve is connected with a water inlet pipeline of a steady flow tank in the steady flow pressurizing unit of the water supply system; the fourth maintenance valve is connected with a water outlet main pipe in a water outlet unit of the water supply system; the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve, the sixth electric valve and the compensating tank air pressure sensor, the two-way adjusting tank air pressure sensor and the energy storage tank air pressure sensor are respectively connected with a control cabinet circuit of the water supply system.
The invention provides a multi-tank energy storage compensation type laminated variable-frequency water supply system which is characterized by comprising a water inlet unit, a multi-tank energy storage compensation device, a steady-flow pressurizing unit, a water outlet unit and a control cabinet,
The water inlet unit comprises a water inlet main valve, a Y-shaped filter, a backflow preventer and a pressure stabilizing regulator which are sequentially connected, and a municipal pressure sensor is arranged on a pipeline between the backflow preventer and the pressure stabilizing regulator;
the multi-tank energy storage compensation device comprises a first maintenance valve, a first electric valve, a compensation tank, a second maintenance valve, a second electric valve, a first pressure reducing valve, a third electric valve, a bidirectional regulating tank, a fourth electric valve, a third maintenance valve, a one-way valve, an energy storage tank, a second pressure reducing valve, a fifth electric valve, a sixth electric valve and a fourth maintenance valve, wherein the first maintenance valve is connected with the first electric valve, the first electric valve is connected in two ways, one way is connected with the compensation tank, and the other way is connected with the second maintenance valve; the second maintenance valve is connected with the second electric valve, the second electric valve is connected in two paths, one path is connected with the first pressure reducing valve, the other path is connected with the third electric valve, the first pressure reducing valve is connected in three paths, the other path is connected with the third electric valve, the other path is connected with the bidirectional regulating tank, and the other path is connected with the fourth electric valve; the fourth electric valve is connected with the third maintenance valve; the third maintenance valve is divided into three paths of connection, one path of connection is connected with the one-way valve, one path of connection is connected with the fifth electric valve, one path of connection is connected with the sixth electric valve, the one-way valve is connected with the energy storage tank, the fifth electric valve is connected with the energy storage tank through the second pressure reducing valve, the sixth electric valve is connected with the fourth maintenance valve, a compensation tank air pressure sensor is arranged on the compensation tank body, a bidirectional regulation tank air pressure sensor is arranged on the bidirectional regulation tank body, and an energy storage tank air pressure sensor is arranged on the energy storage tank body;
The steady flow pressurizing unit comprises a steady flow tank, an intelligent exhaust device is arranged on the tank body of the steady flow tank, the main tank body of the steady flow tank is connected with the water outlet unit through N branches, N is the number of equipment matched pumps, and each branch comprises a water inlet valve, a pump group, a water outlet check valve and a water outlet valve which are sequentially connected; a water inlet pressure sensor is arranged on a water inlet pipeline of the steady flow tank;
the water outlet unit comprises a water outlet main pipe, a pipeline expansion joint, a water outlet main valve and an electromagnetic flowmeter which are connected in sequence, and a water outlet pressure sensor and a water outlet electric contact pressure gauge are arranged on the water outlet main pipe;
The water inlet pipeline of the steady flow tank is connected in two paths, one path is connected with the first maintenance valve, and the other path is connected with the steady flow regulator; the fourth overhaul valve and the water outlet valve are respectively connected with the water outlet main pipe; the intelligent control cabinet is characterized in that the pressure stabilizing regulator, the municipal pressure sensor, the water inlet pressure sensor, the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve, the sixth electric valve, the compensating tank air pressure sensor, the two-way regulating tank air pressure sensor, the energy storage tank air pressure sensor, the water outlet electric contact pressure gauge and the electromagnetic flowmeter are respectively connected into the intelligent control cabinet.
The invention provides a control method of a multi-tank energy storage compensation type laminated variable frequency water supply system, which is characterized by comprising the following steps,
Step 1, calculating municipal water inflow pressure fluctuation rate and equipment water outflow pressure fluctuation rate under n sampling periods, wherein n is a value according to actual conditions;
Step 2, executing a pressure stability state judging mechanism according to the numerical range and duration of the municipal water inlet pressure fluctuation rate and the equipment water outlet pressure fluctuation rate, wherein the pressure stability state judging mechanism is used for judging the stability states of municipal water inlet pressure and equipment water outlet pressure;
And 3, executing a pressure fluctuation processing mechanism according to the stable states of municipal water inlet pressure and equipment water outlet pressure, wherein the pressure fluctuation processing mechanism adjusts the purposes of the compensation tank, the bidirectional regulating tank and the energy storage tank by controlling and opening and closing the electric valve in the multi-tank energy storage compensation device.
Further, the municipal inflow pressure fluctuation ratio is calculated as follows,
X is = [ (PI 1-PIS) and + … … + (PIn-PIS) in the formula of + (PI 1-PIS), wherein X is municipal water inlet pressure obtained in n sampling periods, the unit is MPa, and PIS is water inlet set pressure, and the unit is MPa;
the calculation method of the device water outlet pressure fluctuation rate is as follows,
Y²=[（PO1-POS）²+（PO2-POS）²+……+（POn-POS）²]/n，
Wherein Y is the equipment water outlet pressure fluctuation rate, PO 1-POn is the equipment water outlet pressure acquired in n sampling periods, the unit is MPa, POS is the water outlet constant pressure set pressure, and the unit is MPa.
Further, the implementation method of the pressure stability judging mechanism comprises,
In the continuous 60s, the municipal water inlet pressure is judged to be in a stable state when the municipal water inlet pressure fluctuation rate X is less than or equal to 0.02 all the time;
In the continuous 60s, the municipal water inlet pressure is always judged to be in an unstable state when the municipal water inlet pressure fluctuation rate is more than 0.02 and less than or equal to 0.05;
in the continuous 60s, the municipal water inlet pressure is always judged to be in an extremely unstable state when the municipal water inlet pressure fluctuation rate X is more than 0.05;
Within 60 seconds continuously, the pressure fluctuation rate X of the water outlet of the equipment is less than or equal to 0.01 all the time, and the water outlet pressure of the equipment is judged to be in a stable state;
In the continuous 60s, the pressure fluctuation rate of the equipment water outlet is always 0.01 < X and is less than or equal to 0.03, and the equipment water outlet pressure is judged to be in an unstable state;
And within 60 seconds continuously, the pressure fluctuation rate X of the water discharged from the equipment is more than 0.03 all the time, and the water discharged from the equipment is judged to be in an extremely unstable state.
Further, the control process of the pressure fluctuation processing mechanism comprises that,
Event a, when the system is in operation, if municipal water inlet pressure and equipment water outlet pressure are both in a stable state, at the moment, the first electric valve is opened, the second electric valve is closed, the third electric valve is closed, the fourth electric valve is opened, the fifth electric valve is closed, the sixth electric valve is opened, the compensation tank is used for water inlet pressure compensation, the bidirectional regulation tank is used for water outlet pressure compensation, the one-way valve is used for water inlet to the energy storage tank, and the energy storage tank is used for storing water hammer energy in the processes of pump start-stop or system abnormal high pressure and the like; the on-off state of each electric valve, the compensating tank, the bidirectional regulating tank and the energy storage tank are in default states after the system is started, and meanwhile, each maintenance valve, the pressure reducing valve and the one-way valve are all kept in the default states;
When the system is in operation, if municipal water inlet pressure is in a stable state, but equipment water outlet pressure is in an unstable state or an extremely unstable state, controlling a fifth electric valve to be opened, and enabling an energy storage tank to discharge water from a tank body of the energy storage tank through a second pressure reducing valve and the fifth electric valve, wherein at the moment, a compensation tank is used for water inlet pressure compensation, a bidirectional regulation tank is used for water outlet pressure compensation, and the energy storage tank is used for water outlet pressure compensation, so that water outlet compensation with double tank volume is realized;
When the system is in operation, if municipal water inlet pressure is in an unstable state, whether equipment water outlet pressure is stable or not, controlling a second electric valve to be opened, closing a fourth electric valve, opening a fifth electric valve, enabling a one-way valve to feed water to an energy storage tank, enabling the energy storage tank to discharge water from a tank body of the energy storage tank through a second pressure reducing valve and the fifth electric valve, opening a third electric valve after high pressure stored in a two-way regulating tank is reduced to water inlet set pressure through a first pressure reducing valve, wherein at the moment, a compensating tank is used for water inlet pressure compensation, the two-way regulating tank is used for water inlet pressure compensation, water inlet compensation with double tank volume is realized, and the energy storage tank is used for water outlet pressure compensation;
When the system is in operation, if municipal water inlet pressure is in an extremely unstable state, whether equipment water outlet pressure is stable or not, controlling a second electric valve to be opened, a fifth electric valve to be opened, closing a sixth electric valve, bidirectionally regulating high pressure stored in the tank and ultrahigh pressure stored in the energy storage tank, reducing pressure to water inlet set pressure through a first reducing valve, opening a third electric valve, enabling a one-way valve to enter the energy storage tank, enabling the energy storage tank to discharge water from the energy storage tank body through the second reducing valve and the fifth electric valve, wherein at the moment, the compensation tank is used for water inlet pressure compensation, the bidirectionally regulating tank is used for water inlet pressure compensation, and the energy storage tank is used for water inlet pressure compensation, so that water inlet compensation with three times of tank volume is realized;
and e, when the system stops running, the stability of municipal water inlet pressure and water outlet pressure is not considered any more, only the maximized water outlet small-flow pressure maintaining capacity is ensured, the frequent start and stop of equipment are avoided, the first electric valve is controlled to be closed, the second electric valve is controlled to be opened, the third electric valve is controlled to be opened, the fifth electric valve is controlled to be opened, the energy storage tank reduces the ultrahigh pressure stored in the tank to the dormancy starting pressure through the second pressure reducing valve, and at the moment, the energy storage tank, the compensation tank and the bidirectional regulating tank are all used for water outlet small-flow pressure maintaining, so that water outlet small-flow pressure maintaining with three times of tank volume is realized.
Further, the control cabinet is also provided with a tank fault processing module, and the tank fault processing module comprises a tank fault checking mechanism and a tank purpose adjusting mechanism, wherein the tank fault checking mechanism is used for checking and determining a faulty tank; the tank body purpose adjusting mechanism is used for adjusting the purpose of the compensation tank, the bidirectional adjusting tank and the energy storage tank according to the conditions of different events in the pressure fluctuation processing mechanism.
Further, the control process of the tank fault checking mechanism comprises,
The system selects a certain time period in late night, controls the first electric valve to be closed, the second electric valve to be opened, the third electric valve to be opened, and the fifth electric valve to be opened, and the equipment is in a dormant and stop running state to enter a small-flow pressure maintaining state in the time period, and the energy storage tank, the compensation tank and the bidirectional regulating tank are all used for maintaining the pressure of the small flow of the discharged water, so that the actual pressure of the discharged water is equal to the constant-pressure set pressure; the system controls the first electric valve to be kept closed, the third electric valve to be kept open, the fifth electric valve to be kept open, the sixth electric valve to be kept open, then the second electric valve to be controlled to be closed, the fourth electric valve to be closed, the energy storage tank to carry out water outlet small flow pressure maintaining, when the user uses water with small flow, the equipment water outlet pressure gradually drops, the air pressure in the energy storage tank can synchronously drop in the same amplitude, the time that the air pressure in the energy storage tank drops from constant pressure setting pressure to dormancy starting pressure is monitored through the air pressure sensor of the energy storage tank, if the time is smaller than the preset time of the system, the energy storage tank is judged to be faulty, otherwise, the energy storage tank is normal;
Then, the system controls the first electric valve to be kept closed, the second electric valve to be kept closed, the third electric valve to be kept open, the fifth electric valve to be kept open, the sixth electric valve to be kept open, then the fourth electric valve to be controlled to be opened, the energy storage tank and the bidirectional regulating tank together carry out small-flow water outlet pressure maintaining, and the energy storage tank can not maintain the small-flow pressure maintaining state at the moment when the pressure stored in the bidirectional regulating tank is equal to the constant-pressure set pressure, only the bidirectional regulating tank carries out small-flow water outlet pressure maintaining, when the small-flow water is used by a user, the equipment water outlet pressure gradually drops, the air pressure in the tank synchronously drops in the same amplitude, the time that the air pressure in the tank drops from the constant-pressure set pressure to the dormant starting pressure is monitored through the bidirectional regulating tank air pressure sensor, if the air pressure in the tank is smaller than the preset time of the system, the fault of the bidirectional regulating tank is judged, and otherwise the bidirectional regulating tank is normal;
Then, the system controls the first electric valve to be kept closed, the third electric valve to be kept open, the fourth electric valve to be kept open, the fifth electric valve to be kept open, the sixth electric valve to be kept open, then the second electric valve to be controlled to be opened, the energy storage tank, the bidirectional regulating tank and the compensating tank together carry out small-flow water outlet pressure maintaining, and the pressure stored in the compensating tank is equal to the constant pressure set pressure when the system is in a dormant state, the actual pressure of water outlet is instantaneously raised to the constant pressure set pressure again, at the moment, the energy storage tank and the bidirectional regulating tank can not maintain the small-flow pressure maintaining state, only the compensating tank is used for carrying out small-flow water outlet pressure maintaining, when the small-flow water is used by a user, the equipment outlet pressure can gradually decline, the air pressure in the tank can synchronously decline in the same amplitude, the time that the air pressure in the compensating tank declines from the constant pressure set pressure to the dormant starting pressure is monitored through the air pressure sensor of the compensating tank, if the time is smaller than the preset time of the system, the fault of the compensating tank is judged, and otherwise the compensating tank is normal.
Further, the control process of the tank body use adjusting mechanism comprises,
In the case of the event a, in which case,
If only the compensation tank fails or the compensation tank and the energy storage tank simultaneously fail, the system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be closed, the fifth electric valve to be opened and the sixth electric valve to be opened, and the two-way regulation tank is switched to carry out water inlet pressure compensation;
If only the bidirectional regulating tank is in fault, or only the energy storage tank is in fault, or both the bidirectional regulating tank and the energy storage tank are in fault, or the compensating tank, the bidirectional regulating tank and the energy storage tank are in fault, the system controls the first electric valve to be opened, the second electric valve to be closed, the third electric valve to be closed, the fourth electric valve to be opened, the fifth electric valve to be closed, the sixth electric valve to be opened, the compensating tank to be used for water inlet pressure compensation, the bidirectional regulating tank to be used for water outlet pressure compensation, the one-way valve to be used for water inlet to the energy storage tank, the energy storage tank to collect water hammer energy in the processes of starting and stopping of a pump or abnormal high pressure of the system and the like;
if the compensation tank fails and the bidirectional regulating tank fails at the same time, the first electric valve of the system is opened, the second electric valve is opened, the third electric valve is opened, the fourth electric valve is opened, the fifth electric valve is opened, the sixth electric valve is closed, and the energy storage tank is used for water inlet pressure compensation;
In the case of the event b, in which case,
If the bidirectional regulating tank and the energy storage tank simultaneously fail, the system controls the first electric valve to be closed, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be opened, and the compensation tank to be used for compensating the water outlet pressure;
The system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened and the sixth electric valve to be opened, and the energy storage tank is used for water outlet from the tank body through the second pressure reducing valve and the fifth electric valve, at the moment, the energy storage tank is used for water inlet pressure compensation, the two-way regulating tank is used for water outlet pressure compensation, and the energy storage tank is used for water outlet pressure compensation;
In the case of the event c, in which case,
If only the compensation tank is in fault or only the bidirectional regulating tank is in fault, or both the compensation tank and the bidirectional regulating tank are in fault, the system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be closed, and the energy storage tank to be used for water inlet pressure compensation;
The system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be closed, the fourth electric valve to be closed, the fifth electric valve to be opened, the sixth electric valve to be opened, the one-way valve to be filled into the energy storage tank, the energy storage tank to discharge water from the energy storage tank body through the second pressure reducing valve and the fifth electric valve, the third electric valve to be opened after the high pressure stored in the two-way regulating tank is reduced to the water inlet set pressure through the first pressure reducing valve, at the moment, the compensating tank is used for water inlet pressure compensation, the two-way regulating tank is used for water inlet pressure compensation, and the energy storage tank is used for water outlet pressure compensation;
in the case of the event d, in which case,
The system controls the second electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be closed, the high pressure stored in the bidirectional regulating tank and the ultrahigh pressure stored in the energy storage tank are depressurized to a water inlet set pressure through the first depressurization valve, then the third electric valve is opened, the one-way valve is opened to enter the energy storage tank, the energy storage tank discharges water from the energy storage tank body through the second depressurization valve and the fifth electric valve, at the moment, the compensation tank is used for water inlet pressure compensation, the bidirectional regulating tank is used for water inlet pressure compensation, and the energy storage tank is used for water inlet pressure compensation;
In the case of the event e the event,
The system controls the first electric valve to be closed, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be opened, the energy storage tank to decompress the ultrahigh pressure stored in the energy storage tank to the dormancy starting pressure through the second decompression valve, and at the moment, the energy storage tank, the compensation tank and the bidirectional regulating tank are all used for maintaining the pressure of the small flow of the discharged water.
The invention provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, realizes the steps of a control method of a multi-tank energy storage compensation type laminated variable frequency water supply system.
The multi-tank energy storage compensation device, the water supply system, the method and the medium provided by the invention adopt the multi-tank design of the energy storage tank, the compensation tank and the bidirectional regulation tank, and automatically regulate the water inlet and outlet compensation volume and the small-flow pressure maintaining volume according to the change of municipal water inlet pressure and equipment water outlet pressure, and the energy storage tank can collect energy generated by water hammer and abnormal high pressure and release the energy when water is used in small flow, so that the effective utilization of the energy is realized. In addition, a tank fault processing module is also arranged and used for automatically adjusting the purposes of the tank under different fault conditions, so that the tank fault processing module is maximally suitable for fluctuation of water inlet and outlet pressure.
Drawings
FIG. 1 is a schematic diagram of a multi-tank energy storage compensation type laminated variable frequency water supply system.
Detailed Description
The invention is further defined by, but is not limited to, the following drawings and examples in conjunction with the specification.
Example 1
The multi-tank energy storage compensation device comprises a first maintenance valve 6, a first electric valve 7, a compensation tank 8, a second maintenance valve 9, a second electric valve 10, a first pressure reducing valve 11, a third electric valve 12, a bidirectional regulating tank 13, a fourth electric valve 14, a third maintenance valve 15, a one-way valve 16, an energy storage tank 17, a second pressure reducing valve 18, a fifth electric valve 19, a sixth electric valve 20 and a fourth maintenance valve 21, wherein the first maintenance valve 6 is connected with the first electric valve 7, the first electric valve 7 is connected in two paths, one path is connected with the compensation tank 8, and the other path is connected with the second maintenance valve 9; the second maintenance valve 9 is connected with the second electric valve 10, the second electric valve 10 is connected in two ways, one way is connected with the first pressure reducing valve 11, one way is connected with the third electric valve 12, the first pressure reducing valve 11 is connected in three ways, one way is connected with the third electric valve 12, one way is connected with the bidirectional regulating tank 13, and one way is connected with the fourth electric valve 14; the fourth electric valve 14 is connected with a third maintenance valve 15; the third maintenance valve 15 is divided into three paths of connection, one path of connection is connected with the one-way valve 16, one path of connection is connected with the fifth electric valve 19, one path of connection is connected with the sixth electric valve 20, the one-way valve 16 is connected with the energy storage tank 17, the fifth electric valve 19 is connected with the energy storage tank 17 through the second pressure reducing valve 18, the sixth electric valve 20 is connected with the fourth maintenance valve 21, a compensation tank air pressure sensor 40 is arranged on the tank body of the compensation tank 8, a bidirectional regulation tank air pressure sensor 41 is arranged on the tank body of the bidirectional regulation tank 13, and an energy storage tank air pressure sensor 42 is arranged on the tank body of the energy storage tank 17; wherein, the first maintenance valve 6 is connected with a water inlet pipeline of a steady flow tank 24 in the steady flow pressurizing unit of the water supply system; the fourth overhaul valve 21 is connected with a water outlet main pipe 29 in a water outlet unit of the water supply system; the first electric valve 7, the second electric valve 10, the third electric valve 12, the fourth electric valve 14, the fifth electric valve 19, the sixth electric valve 20 and the compensating tank air pressure sensor 40, the bidirectional regulating tank air pressure sensor 41 and the energy storage tank air pressure sensor 42 are connected with a control cabinet circuit of the water supply system.
Example 2
A multi-tank energy storage compensation type laminated variable-frequency water supply system, as shown in figure 1, comprises a water inlet unit, a multi-tank energy storage compensation device, a steady flow pressurizing unit, a water outlet unit and a control cabinet,
The water inlet unit comprises a water inlet main valve 1, a Y-shaped filter 2, a backflow preventer 3 and a pressure stabilizing regulator 5 which are sequentially connected, and a municipal pressure sensor 4 is arranged on a pipeline between the backflow preventer 3 and the pressure stabilizing regulator 5;
The multi-tank energy storage compensation device comprises a first maintenance valve 6, a first electric valve 7, a compensation tank 8, a second maintenance valve 9, a second electric valve 10, a first pressure reducing valve 11, a third electric valve 12, a bidirectional regulating tank 13, a fourth electric valve 14, a third maintenance valve 15, a one-way valve 16, an energy storage tank 17, a second pressure reducing valve 18, a fifth electric valve 19, a sixth electric valve 20 and a fourth maintenance valve 21, wherein the first maintenance valve 6 is connected with the first electric valve 7, the first electric valve 7 is connected in two ways, one way is connected with the compensation tank 8, and the other way is connected with the second maintenance valve 9; the second maintenance valve 9 is connected with the second electric valve 10, the second electric valve 10 is connected in two ways, one way is connected with the first pressure reducing valve 11, one way is connected with the third electric valve 12, the first pressure reducing valve 11 is connected in three ways, one way is connected with the third electric valve 12, one way is connected with the bidirectional regulating tank 13, and one way is connected with the fourth electric valve 14; the fourth electric valve 14 is connected with a third maintenance valve 15; the third maintenance valve 15 is divided into three paths of connection, one path of connection is connected with the one-way valve 16, one path of connection is connected with the fifth electric valve 19, one path of connection is connected with the sixth electric valve 20, the one-way valve 16 is connected with the energy storage tank 17, the fifth electric valve 19 is connected with the energy storage tank 17 through the second pressure reducing valve 18, the sixth electric valve 20 is connected with the fourth maintenance valve 21, a compensation tank air pressure sensor 40 is arranged on the tank body of the compensation tank 8, a bidirectional regulation tank air pressure sensor 41 is arranged on the tank body of the bidirectional regulation tank 13, and an energy storage tank air pressure sensor 42 is arranged on the tank body of the energy storage tank 17;
the steady flow pressurizing unit comprises a steady flow tank 24, an intelligent exhaust device 23 is arranged on the tank body of the steady flow tank 24, the main tank body of the steady flow tank 24 is connected with a water outlet unit through N branches, N is the number of equipment matched pumps, and each branch comprises a water inlet valve 25, a pump group 26, a water outlet check valve 27, a water outlet valve 28 and a water outlet valve 28 which are connected in sequence; a water inlet pressure sensor 22 is arranged on the water inlet pipeline of the steady flow tank 24;
The water outlet unit comprises a water outlet main pipe 29, a pipeline expansion joint 31, a water outlet main valve 33 and an electromagnetic flowmeter 34 which are sequentially connected, wherein a water outlet pressure sensor 30 and a water outlet electric contact pressure gauge 31 are arranged on the water outlet main pipe 29;
wherein, one path of the water inlet pipeline of the steady flow tank 24 is connected with the first maintenance valve 6, and the other path is connected with the steady flow regulator 5; the fourth overhaul valve 21 and the water outlet valve 28 are respectively connected with the water outlet main pipe 29; the pressure regulator 5, the municipal pressure sensor 4, the first electric valve 7, the second electric valve 10, the third electric valve 12, the fourth electric valve 14, the fifth electric valve 19, the sixth electric valve 20, the compensating tank air pressure sensor 40, the bidirectional regulating tank air pressure sensor 41, the energy storage tank air pressure sensor 42, the water pressure sensor 30 and the water outlet electric contact pressure gauge 31 are respectively connected into the intelligent control cabinet through signals.
Example 3
A control method of a multi-tank energy storage compensation type laminated variable-frequency water supply system comprises the following steps:
Step 1, calculating municipal water inlet pressure fluctuation rate and equipment water outlet pressure fluctuation rate under n sampling periods, wherein n is a value according to actual conditions. The municipal water inflow pressure fluctuation ratio is calculated as follows,
X is = [ (PI 1-PIS) and + … … + (PIn-PIS) in the formula of + (PI 1-PIS), wherein X is municipal water inlet pressure obtained in n sampling periods, the unit is MPa, and PIS is water inlet set pressure, and the unit is MPa;
the calculation method of the device water outlet pressure fluctuation rate is as follows,
Y²=[（PO1-POS）²+（PO2-POS）²+……+（POn-POS）²]/n，
Wherein Y is the equipment water outlet pressure fluctuation rate, PO 1-POn is the equipment water outlet pressure acquired in n sampling periods, the unit is MPa, POS is the water outlet constant pressure set pressure, and the unit is MPa.
And 2, executing a pressure stability state judging mechanism according to the numerical range and the duration of the municipal water inlet pressure fluctuation rate and the equipment water outlet pressure fluctuation rate, wherein the pressure stability state judging mechanism is used for judging the stability states of municipal water inlet pressure and equipment water outlet pressure. The implementation of the pressure steady state determination mechanism includes,
In the lasting period of 60 seconds, the municipal water inlet pressure is judged to be in a stable state when the municipal water inlet pressure fluctuation rate X is less than or equal to 0.02 all the time;
in the lasting period of 60 seconds, the municipal water inlet pressure is judged to be in an unstable state when the municipal water inlet pressure fluctuation rate is more than 0.02 and less than or equal to 0.05 all the time;
In the lasting period of 60 seconds, the municipal water inflow pressure is always judged to be in an extremely unstable state when the municipal water inflow pressure fluctuation rate X is more than 0.05;
Within 60 seconds continuously, the pressure fluctuation rate X of the water outlet of the equipment is less than or equal to 0.01 all the time, and the water outlet pressure of the equipment is judged to be in a stable state;
In the lasting period of 60 seconds, the pressure fluctuation rate of the water outlet of the equipment is always 0.01 < X and is less than or equal to 0.03, and the water outlet pressure of the equipment is judged to be in an unstable state;
and within 60 seconds, the pressure fluctuation rate X of the water discharged from the equipment is more than 0.03 all the time, and the water discharged from the equipment is judged to be in an extremely unstable state.
And 3, executing a pressure fluctuation processing mechanism according to the stable states of municipal water inlet pressure and equipment water outlet pressure, wherein the pressure fluctuation processing mechanism adjusts the purposes of the compensation tank 8, the bidirectional regulating tank 13 and the energy storage tank 17 by controlling and opening and closing the electric valves in the multi-tank energy storage compensation device.
The control process of the pressure fluctuation processing mechanism includes,
Event a, when the system is running, if municipal water inlet pressure and equipment water outlet pressure are both in a stable state, at the moment, the first electric valve 7 is opened, the second electric valve 10 is closed, the third electric valve 12 is closed, the fourth electric valve 14 is opened, the fifth electric valve 19 is closed, the sixth electric valve 20 is opened, the compensation tank 8 is used for water inlet pressure compensation, the bidirectional regulating tank 13 is used for water outlet pressure compensation, the one-way valve 16 is used for water inlet to the energy storage tank 17, and the energy storage tank 17 is used for collecting water hammer energy in the processes of pump start and stop or system abnormal high pressure and the like for storage; the on-off state of each electric valve and the purposes of the compensating tank 8, the bidirectional regulating tank 13 and the energy storage tank 17 are default states after the system is started, and meanwhile, each maintenance valve, the pressure reducing valve and the one-way valve are all kept in the default states;
when the system is in operation, if municipal water inlet pressure is in a stable state, but equipment water outlet pressure is in an unstable state or an extremely unstable state, a fifth electric valve 19 is controlled to be opened, an energy storage tank 17 discharges water from a tank body through a second pressure reducing valve 18 and the fifth electric valve 19, at the moment, a compensation tank 8 is used for water inlet pressure compensation, a bidirectional regulating tank 13 is used for water outlet pressure compensation, and the energy storage tank 17 is used for water outlet pressure compensation, so that water outlet compensation with double tank volume is realized;
when the system is in operation, if municipal water inlet pressure is in an unstable state, whether equipment water outlet pressure is stable or not, the second electric valve 10 is controlled to be opened, the fourth electric valve 14 is closed, the fifth electric valve 19 is opened, the one-way valve 16 is used for feeding water to the energy storage tank 17, the energy storage tank 17 is used for discharging water from the tank body through the second pressure reducing valve 18 and the fifth electric valve 19, after the high pressure stored in the two-way regulating tank 13 is reduced to water inlet set pressure through the first pressure reducing valve 11, the third electric valve 12 is opened, at the moment, the compensating tank 8 is used for water inlet pressure compensation, the two-way regulating tank 13 is used for water inlet pressure compensation, double-tank-volume water inlet compensation is realized, and the energy storage tank 17 is used for water outlet pressure compensation;
event d, when the system is in operation, if municipal water inlet pressure is in an extremely unstable state, whether equipment water outlet pressure is stable or not, the second electric valve 10 is controlled to be opened, the fifth electric valve 19 is opened, the sixth electric valve 20 is closed, after the high pressure stored in the bidirectional regulating tank 13 and the ultrahigh pressure stored in the energy storage tank 17 are depressurized to water inlet set pressure through the first pressure reducing valve 11, the third electric valve 12 is opened, the one-way valve 16 is used for water inlet to the energy storage tank 17, the energy storage tank 17 is used for water outlet from the tank body through the second pressure reducing valve 18 and the fifth electric valve 19, at the moment, the compensating tank 8 is used for water inlet pressure compensation, the bidirectional regulating tank 13 is used for water inlet pressure compensation, the energy storage tank 17 is used for water inlet pressure compensation, and thus water inlet compensation with triple tank volume is realized;
And e, when the system stops running, the stability of municipal water inlet pressure and water outlet pressure is not considered any more, only the maximized water outlet small-flow pressure maintaining capacity is ensured, frequent starting and stopping of equipment are avoided, the first electric valve 7 is controlled to be closed, the second electric valve 10 is opened, the third electric valve 12 is opened, the fifth electric valve 19 is opened, the energy storage tank 17 is used for reducing the ultrahigh pressure stored in the tank to the dormancy starting pressure through the second pressure reducing valve 18, and at the moment, the energy storage tank 17, the compensation tank 8 and the bidirectional regulating tank 13 are all used for water outlet small-flow pressure maintaining, so that water outlet small-flow pressure maintaining with three times of tank volume is realized.
Example 4
The control method of the multi-tank energy storage compensation type laminated variable frequency water supply system according to embodiment 2 and the control method of the multi-tank energy storage compensation type laminated variable frequency water supply system according to embodiment 3 are different in that the control cabinet is further provided with a tank fault processing module, and the tank fault processing module further comprises a tank fault checking mechanism and a tank use adjusting mechanism. The tank fault checking mechanism is used for checking and determining a faulty tank; the tank body purpose adjusting mechanism is used for adjusting the purposes of the compensating tank 8, the bidirectional adjusting tank 13 and the energy storage tank 17 according to the conditions of different events in the pressure fluctuation processing mechanism.
In particular, the control process of the tank fault checking mechanism comprises,
The system selects a certain time period in late night, the first electric valve 7 is controlled to be closed, the second electric valve 10 is opened, the third electric valve 12 is opened, the fifth electric valve 19 is opened, the equipment is stopped in a dormant state and enters a small flow pressure maintaining state in the time period, the energy storage tank 17, the compensation tank 8 and the bidirectional regulating tank 13 are all used for maintaining the pressure of the water at a small flow, and the actual pressure of the water at the moment is equal to the constant pressure setting pressure; the system controls the first electric valve 7 to be closed, the third electric valve 12 to be opened, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be opened, then the second electric valve 10 to be closed, the fourth electric valve 14 to be closed, the energy storage tank 17 to carry out water outlet small flow pressure maintaining, when the water is used by a small flow of a user, the water outlet pressure of the device can be gradually reduced, the air pressure in the energy storage tank 17 can be synchronously and synchronously reduced in the same amplitude, the air pressure sensor 42 monitors the time that the air pressure in the tank is reduced from the constant pressure setting pressure to the dormancy starting pressure, if the time is less than the preset time of the system, the preset time of the system in the embodiment is 2s, the failure (capsule breakage or air pressure shortage) of the energy storage tank 17 is judged, otherwise, the energy storage tank 17 is normal;
Next, the system controls the first electric valve 7 to be kept closed, the second electric valve 10 to be kept closed, the third electric valve 12 to be kept open, the fifth electric valve 19 to be kept open, the sixth electric valve 20 to be kept open, then the fourth electric valve 14 to be controlled to be opened, the energy storage tank 17 and the bidirectional regulating tank 13 to carry out small-flow water-outlet pressure maintaining together, and since the pressure stored in the bidirectional regulating tank 13 is equal to the constant pressure set pressure during dormancy, the actual water-outlet pressure can be instantaneously raised to the constant pressure set pressure again, at the moment, the energy storage tank 17 can not maintain the small-flow pressure maintaining state, only the bidirectional regulating tank 13 is used for carrying out small-flow water-outlet pressure maintaining, when the small-flow water is used by a user, the equipment water-outlet pressure is gradually reduced, the air pressure in the tank is synchronously reduced in the same amplitude, the time that the air pressure in the tank is reduced from the constant pressure set pressure to the dormancy start pressure is monitored through the bidirectional regulating tank air pressure sensor 41, if the preset time is less than the preset time of the system, the preset time is 2s, the fault (the capsule or the air pressure shortage) of the bidirectional regulating tank 13 is judged, otherwise normal;
Then, the system controls the first electric valve 7 to be kept closed, the third electric valve 12 to be kept open, the fourth electric valve 14 to be kept open, the fifth electric valve 19 to be kept open, the sixth electric valve 20 to be kept open, then the second electric valve 10 to be controlled to be opened, the energy storage tank 17, the bidirectional regulating tank 13 and the compensating tank 8 to carry out water outlet small flow pressure maintaining together, and the actual water outlet pressure can be instantaneously raised to the constant pressure setting pressure because the pressure stored in the compensating tank 8 is equal to the constant pressure setting pressure during dormancy, at this moment, the energy storage tank 17 and the bidirectional regulating tank 13 can not maintain the small flow pressure maintaining state, only the compensating tank 8 is carrying out water outlet small flow pressure maintaining, when the user uses water with small flow, the equipment water outlet pressure can be gradually lowered, the air pressure in the tank can also be synchronously lowered with the same amplitude, the time that the air pressure in the compensating tank is lowered from the constant pressure setting pressure to the dormancy starting pressure is monitored by the compensating tank air pressure sensor 40, if the time of the system preset time is less than the system preset time is 2 seconds, the fault (capsule breakage or insufficient air pressure) of the compensating tank 8 is judged, otherwise, the system preset time is normal.
The control process of the tank use adjusting mechanism comprises,
In the case of event a:
If only the compensating tank 8 fails or the compensating tank 8 and the energy storage tank 17 simultaneously fail, the system controls the first electric valve 7 to be opened, the second electric valve 10 to be opened, the third electric valve 12 to be opened, the fourth electric valve 14 to be closed, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be opened, and the two-way regulating tank 13 to be switched to carry out water inlet pressure compensation;
If only the bidirectional regulating tank 13 is in fault, only the energy storage tank 17 is in fault, or both the bidirectional regulating tank 13 and the energy storage tank 17 are in fault, or all three tanks are in fault, the system controls the first electric valve 7 to be opened, the second electric valve 10 to be closed, the third electric valve 12 to be closed, the fourth electric valve 14 to be opened, the fifth electric valve 19 to be closed, the sixth electric valve 20 to be opened, the compensating tank 8 to be used for water inlet pressure compensation, the bidirectional regulating tank 13 to be used for water outlet pressure compensation, the one-way valve 16 to be used for water inlet to the energy storage tank 17, and the energy storage tank 17 to collect water hammer energy in the processes of pump start and stop or system abnormal high pressure and the like to store;
If the compensating tank 8 and the bidirectional regulating tank 13 are simultaneously in failure, the first electric valve 7 of the system is opened, the second electric valve 10 is opened, the third electric valve 12 is opened, the fourth electric valve 14 is opened, the fifth electric valve 19 is opened, the sixth electric valve 20 is closed, and the energy storage tank 17 is used for water inlet pressure compensation.
In the case of event b:
If the bidirectional regulating tank 13 and the energy storage tank 17 are simultaneously failed, the system controls the first electric valve 7 to be closed, the second electric valve 10 to be opened, the third electric valve 12 to be opened, the fourth electric valve 14 to be opened, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be opened and the compensating tank 8 to be used for water outlet pressure compensation;
The system controls the first electric valve 7 to be opened, the second electric valve 10 to be opened, the third electric valve 12 to be opened, the fourth electric valve 14 to be opened, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be opened, and the energy storage tank 17 to discharge water from the tank body through the second pressure reducing valve 18 and the fifth electric valve 19, at this time, the compensation tank 8 is used for water inlet pressure compensation, the bidirectional regulating tank 13 is used for water outlet pressure compensation, and the energy storage tank 17 is used for water outlet pressure compensation.
In the case of event c:
if only the compensating tank 8 is in fault or only the bidirectional regulating tank 13 is in fault or both the compensating tank 8 and the bidirectional regulating tank 13 are in fault, the system controls the first electric valve 7 to be opened, the second electric valve 10 to be opened, the third electric valve 12 to be opened, the fourth electric valve 14 to be opened, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be closed and the energy storage tank 17 to be used for water inlet pressure compensation;
The system controls the first electric valve 7 to be opened, the second electric valve 10 to be opened, the third electric valve 12 to be closed, the fourth electric valve 14 to be closed, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be opened, the one-way valve 16 to be opened, the energy storage tank 17 to be discharged from the tank body through the second pressure reducing valve 18 and the fifth electric valve 19, the third electric valve 12 to be opened after the high pressure stored in the two-way regulating tank 13 is reduced to the water inlet set pressure through the first pressure reducing valve 11, at this time, the compensating tank 8 to be used for water inlet pressure compensation, the two-way regulating tank 13 to be used for water inlet pressure compensation, and the energy storage tank 17 to be used for water outlet pressure compensation.
In the case of event d: the system controls the second electric valve 10 to be opened, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be closed, the high pressure stored in the bidirectional regulating tank 13 and the ultrahigh pressure stored in the energy storage tank 17 are depressurized to the water inlet set pressure through the first pressure reducing valve 11, then the third electric valve 12 is opened, the one-way valve 16 is used for water inlet to the energy storage tank 17, the energy storage tank 17 is used for water outlet from the tank body through the second pressure reducing valve 18 and the fifth electric valve 19, at the moment, the compensating tank 8 is used for water inlet pressure compensation, the bidirectional regulating tank 13 is used for water inlet pressure compensation, and the energy storage tank 17 is used for water inlet pressure compensation.
In the case of event e: the system controls the first electric valve 7 to be closed, the second electric valve 10 to be opened, the third electric valve 12 to be opened, the fourth electric valve 14 to be opened, the fifth electric valve 19 to be opened, the sixth electric valve 20 to be opened, the energy storage tank 17 to decompress the ultrahigh pressure stored in the tank to the dormancy starting pressure through the second decompression valve 18, and at the moment, the energy storage tank 17, the compensation tank 8 and the bidirectional regulating tank 13 are all used for maintaining the pressure of the small flow of the discharged water.
Example 5
The invention provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, realizes the steps of a control method of a multi-tank energy storage compensation type laminated variable frequency water supply system.
According to the invention, according to the change range of municipal water inlet pressure, tanks of different numbers of the energy storage tank 17, the compensation tank 8 and the bidirectional regulating tank 13 are selected for water inlet compensation, when the constant pressure setting pressure of water outlet is 0.5MPa, the water inlet pressure can be maximally realized under the condition of severe fluctuation of 0.1MPa-0.4MPa, the actual pressure of water outlet can be ensured to be within the range of 0.48MPa-0.52MPa, and the actual pressure of water outlet is ensured to be constant. When the invention is used for maintaining pressure at a small flow rate in dormancy, the pump can be restarted at least for more than 30s, so that the problem of frequent starting of the pump is greatly relieved, and the service life of the pump is prolonged.
In one embodiment of the invention, the constant pressure setting pressure of the effluent is 0.5MPa, when the municipal water inlet pressure changes, the actual pressure of the effluent is recorded, the total recording time is 150 seconds, data is recorded every 5 seconds, as shown in the water inlet and outlet pressure recording table of the following table 1,
Table 1 entry and exit water pressure recording table
As can be seen from the analysis in table 1, in the case of severe fluctuations in the inlet water pressure, the application of the present invention can ensure a constant outlet water actual pressure by compensating for the change in volume of the tank.
During the same time period of continuous multiple weekdays and late night, after the system is dormant, the pump restarting time after each dormancy is recorded, 20 times of continuous recording is performed, the specific data information is shown in the post-dormancy pump restarting time recording table in the following table 2,
TABLE 2 Pump restart time Table after dormancy
As can be seen from the analysis in table 2, the application of the present invention improves the compensation capacity by the change of the compensation volume of the tank under the condition of small flow and pressure maintaining, and greatly reduces the frequent degree from dormancy to restarting, thereby improving the service life of the pump.
In one embodiment of the invention, the constant pressure setting pressure of the effluent is 0.5MPa, when the municipal water inlet pressure changes, the actual pressure of the effluent is recorded, the total recording time is 150 seconds, data is recorded every 5 seconds, as shown in the water inlet and outlet pressure recording table of the following table 1,
Table 1 entry and exit water pressure recording table
As can be seen from the analysis in table 1, in the case of severe fluctuations in the inlet water pressure, the application of the present invention can ensure a constant outlet water actual pressure by compensating for the change in volume of the tank.
During the same time period of continuous multiple weekdays and late night, after the system is dormant, the pump restarting time after each dormancy is recorded, 20 times of continuous recording is performed, the specific data information is shown in the post-dormancy pump restarting time recording table in the following table 2,
TABLE 2 Pump restart time Table after dormancy
As can be seen from the analysis in table 2, the application of the present invention improves the compensation capacity by the change of the compensation volume of the tank under the condition of small flow and pressure maintaining, and greatly reduces the frequent degree from dormancy to restarting, thereby improving the service life of the pump.
In one embodiment of the invention, the constant pressure setting pressure of the effluent is 0.5MPa, when the municipal water inlet pressure changes, the actual pressure of the effluent is recorded, the total recording time is 150 seconds, data is recorded every 5 seconds, as shown in the water inlet and outlet pressure recording table of the following table 1,
Table 1 entry and exit water pressure recording table
| Time s | Municipal water pressure (MPa) | Actual pressure of water outlet (MPa) |
| 0 | 0.25 | 0.49 |
| 5 | 0.23 | 0.50 |
| 10 | 0.18 | 0.48 |
| 15 | 0.20 | 0.49 |
| 20 | 0.15 | 0.48 |
| 25 | 0.13 | 0.48 |
| 30 | 0.11 | 0.49 |
| 35 | 0.10 | 0.48 |
| 40 | 0.15 | 0.50 |
| 45 | 0.19 | 0.51 |
| 50 | 0.21 | 0.52 |
| 55 | 0.23 | 0.50 |
| 60 | 0.27 | 0.52 |
| 65 | 0.30 | 0.52 |
| 70 | 0.31 | 0.51 |
| 75 | 0.33 | 0.51 |
| 80 | 0.28 | 0.49 |
| 85 | 0.26 | 0.48 |
| 90 | 0.35 | 0.52 |
| 95 | 0.37 | 0.52 |
| 100 | 0.40 | 0.51 |
| 105 | 0.38 | 0.50 |
| 110 | 0.35 | 0.49 |
| 115 | 0.32 | 0.49 |
| 120 | 0.30 | 0.50 |
| 125 | 0.25 | 0.48 |
| 130 | 0.21 | 0.48 |
| 135 | 0.26 | 0.52 |
| 140 | 0.19 | 0.48 |
| 145 | 0.15 | 0.48 |
| 150 | 0.20 | 0.51 |
As can be seen from the analysis in table 1, in the case of severe fluctuations in the inlet water pressure, the application of the present invention can ensure a constant outlet water actual pressure by compensating for the change in volume of the tank.
During the same time period of continuous multiple weekdays and late night, after the system is dormant, the pump restarting time after each dormancy is recorded, 20 times of continuous recording is performed, the specific data information is shown in the post-dormancy pump restarting time recording table in the following table 2,
TABLE 2 Pump restart time Table after dormancy
| Number of dormancy times | Time(s) for restarting pump after dormancy |
| 1 | 59 |
| 2 | 50 |
| 3 | 65 |
| 4 | 53 |
| 5 | 60 |
| 6 | 71 |
| 7 | 52 |
| 8 | 58 |
| 9 | 75 |
| 10 | 49 |
| 11 | 85 |
| 12 | 69 |
| 13 | 91 |
| 14 | 84 |
| 15 | 76 |
| 16 | 80 |
| 17 | 55 |
| 18 | 64 |
| 19 | 70 |
| 20 | 81 |
As can be seen from the analysis in table 2, the application of the present invention improves the compensation capacity by the change of the compensation volume of the tank under the condition of small flow and pressure maintaining, and greatly reduces the frequent degree from dormancy to restarting, thereby improving the service life of the pump.
Claims (10)
1. The multi-tank energy storage compensation device is characterized by comprising a first maintenance valve, a first electric valve, a compensation tank, a second maintenance valve, a second electric valve, a first pressure reducing valve, a third electric valve, a two-way regulation tank, a fourth electric valve, a third maintenance valve, a one-way valve, an energy storage tank, a second pressure reducing valve, a fifth electric valve, a sixth electric valve and a fourth maintenance valve, wherein the first maintenance valve is connected with the first electric valve, the first electric valve is connected in two ways, one way is connected with the compensation tank, and the other way is connected with the second maintenance valve; the second maintenance valve is connected with the second electric valve, the second electric valve is connected in two paths, one path is connected with the first pressure reducing valve, the other path is connected with the third electric valve, the first pressure reducing valve is connected in three paths, the other path is connected with the third electric valve, the other path is connected with the bidirectional regulating tank, and the other path is connected with the fourth electric valve; the fourth electric valve is connected with the third maintenance valve; the third maintenance valve is divided into three paths of connection, one path of connection is connected with the one-way valve, one path of connection is connected with the fifth electric valve, one path of connection is connected with the sixth electric valve, the one-way valve is connected with the energy storage tank, the fifth electric valve is connected with the energy storage tank through the second pressure reducing valve, the sixth electric valve is connected with the fourth maintenance valve, a compensation tank air pressure sensor is arranged on the compensation tank body, a bidirectional regulation tank air pressure sensor is arranged on the bidirectional regulation tank body, and an energy storage tank air pressure sensor is arranged on the energy storage tank body; the first maintenance valve is connected with a water inlet pipeline of a steady flow tank in the steady flow pressurizing unit of the water supply system; the fourth maintenance valve is connected with a water outlet main pipe in a water outlet unit of the water supply system; the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve, the sixth electric valve and the compensating tank air pressure sensor, the two-way adjusting tank air pressure sensor and the energy storage tank air pressure sensor are respectively connected with a control cabinet circuit of the water supply system.
2. A multi-tank energy storage compensation type laminated variable-frequency water supply system is characterized by comprising a water inlet unit, a multi-tank energy storage compensation device, a steady flow pressurizing unit, a water outlet unit and a control cabinet,
The water inlet unit comprises a water inlet main valve, a Y-shaped filter, a backflow preventer and a pressure stabilizing regulator which are sequentially connected, and a municipal pressure sensor is arranged on a pipeline between the backflow preventer and the pressure stabilizing regulator;
the multi-tank energy storage compensation device comprises a first maintenance valve, a first electric valve, a compensation tank, a second maintenance valve, a second electric valve, a first pressure reducing valve, a third electric valve, a bidirectional regulating tank, a fourth electric valve, a third maintenance valve, a one-way valve, an energy storage tank, a second pressure reducing valve, a fifth electric valve, a sixth electric valve and a fourth maintenance valve, wherein the first maintenance valve is connected with the first electric valve, the first electric valve is connected in two ways, one way is connected with the compensation tank, and the other way is connected with the second maintenance valve; the second maintenance valve is connected with the second electric valve, the second electric valve is connected in two paths, one path is connected with the first pressure reducing valve, the other path is connected with the third electric valve, the first pressure reducing valve is connected in three paths, the other path is connected with the third electric valve, the other path is connected with the bidirectional regulating tank, and the other path is connected with the fourth electric valve; the fourth electric valve is connected with the third maintenance valve; the third maintenance valve is divided into three paths of connection, one path of connection is connected with the one-way valve, one path of connection is connected with the fifth electric valve, one path of connection is connected with the sixth electric valve, the one-way valve is connected with the energy storage tank, the fifth electric valve is connected with the energy storage tank through the second pressure reducing valve, the sixth electric valve is connected with the fourth maintenance valve, a compensation tank air pressure sensor is arranged on the compensation tank body, a bidirectional regulation tank air pressure sensor is arranged on the bidirectional regulation tank body, and an energy storage tank air pressure sensor is arranged on the energy storage tank body;
The steady flow pressurizing unit comprises a steady flow tank, an intelligent exhaust device is arranged on the tank body of the steady flow tank, the main tank body of the steady flow tank is connected with the water outlet unit through N branches, N is the number of equipment matched pumps, and each branch comprises a water inlet valve, a pump group, a water outlet check valve and a water outlet valve which are sequentially connected; a water inlet pressure sensor is arranged on a water inlet pipeline of the steady flow tank;
the water outlet unit comprises a water outlet main pipe, a pipeline expansion joint, a water outlet main valve and an electromagnetic flowmeter which are connected in sequence, and a water outlet pressure sensor and a water outlet electric contact pressure gauge are arranged on the water outlet main pipe;
The water inlet pipeline of the steady flow tank is connected in two paths, one path is connected with the first maintenance valve, and the other path is connected with the steady flow regulator; the fourth overhaul valve and the water outlet valve are respectively connected with the water outlet main pipe; the intelligent control cabinet is characterized in that the pressure stabilizing regulator, the municipal pressure sensor, the water inlet pressure sensor, the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve, the sixth electric valve, the compensating tank air pressure sensor, the two-way regulating tank air pressure sensor, the energy storage tank air pressure sensor, the water outlet electric contact pressure gauge and the electromagnetic flowmeter are respectively connected into the intelligent control cabinet.
3. A control method of a multi-tank energy storage compensation type laminated variable frequency water supply system according to claim 2, comprising the following steps,
Step 1, calculating municipal water inflow pressure fluctuation rate and equipment water outflow pressure fluctuation rate under n sampling periods, wherein n is a value according to actual conditions;
Step 2, executing a pressure stability state judging mechanism according to the numerical range and duration of the municipal water inlet pressure fluctuation rate and the equipment water outlet pressure fluctuation rate, wherein the pressure stability state judging mechanism is used for judging the stability states of municipal water inlet pressure and equipment water outlet pressure;
And 3, executing a pressure fluctuation processing mechanism according to the stable states of municipal water inlet pressure and equipment water outlet pressure, wherein the pressure fluctuation processing mechanism adjusts the purposes of the compensation tank, the bidirectional regulating tank and the energy storage tank by controlling and opening and closing the electric valve in the multi-tank energy storage compensation device.
4. The method for controlling a multi-tank energy storage compensation type laminated variable frequency water supply system according to claim 3, further characterized in that,
The municipal water inflow pressure fluctuation ratio is calculated as follows,
X is = [ (PI 1-PIS) and + … … + (PIn-PIS) in the formula of + (PI 1-PIS), wherein X is municipal water inlet pressure obtained in n sampling periods, the unit is MPa, and PIS is water inlet set pressure, and the unit is MPa;
the calculation method of the device water outlet pressure fluctuation rate is as follows,
Y²=[（PO1-POS）²+（PO2-POS）²+……+（POn-POS）²]/n，
Wherein Y is the equipment water outlet pressure fluctuation rate, PO 1-POn is the equipment water outlet pressure acquired in n sampling periods, the unit is MPa, POS is the water outlet constant pressure set pressure, and the unit is MPa.
5. The method for controlling a multi-tank energy storage compensation type variable frequency water supply system according to claim 3, further characterized in that the method for implementing the pressure steady state judgment mechanism comprises,
In the continuous 60s, the municipal water inlet pressure is judged to be in a stable state when the municipal water inlet pressure fluctuation rate X is less than or equal to 0.02 all the time;
In the continuous 60s, the municipal water inlet pressure is always judged to be in an unstable state when the municipal water inlet pressure fluctuation rate is more than 0.02 and less than or equal to 0.05;
in the continuous 60s, the municipal water inlet pressure is always judged to be in an extremely unstable state when the municipal water inlet pressure fluctuation rate X is more than 0.05;
Within 60 seconds continuously, the pressure fluctuation rate X of the water outlet of the equipment is less than or equal to 0.01 all the time, and the water outlet pressure of the equipment is judged to be in a stable state;
In the continuous 60s, the pressure fluctuation rate of the equipment water outlet is always 0.01 < X and is less than or equal to 0.03, and the equipment water outlet pressure is judged to be in an unstable state;
And within 60 seconds continuously, the pressure fluctuation rate X of the water discharged from the equipment is more than 0.03 all the time, and the water discharged from the equipment is judged to be in an extremely unstable state.
6. The method for controlling a multi-tank energy storage compensated variable frequency water supply system as claimed in claim 3, further characterized in that the control process of the pressure fluctuation processing mechanism comprises,
Event a, when the system is in operation, if municipal water inlet pressure and equipment water outlet pressure are both in a stable state, at the moment, the first electric valve is opened, the second electric valve is closed, the third electric valve is closed, the fourth electric valve is opened, the fifth electric valve is closed, the sixth electric valve is opened, the compensation tank is used for water inlet pressure compensation, the bidirectional regulation tank is used for water outlet pressure compensation, the one-way valve is used for water inlet to the energy storage tank, and the energy storage tank is used for storing water hammer energy in the processes of pump start-stop or system abnormal high pressure and the like; the on-off state of each electric valve, the compensating tank, the bidirectional regulating tank and the energy storage tank are in default states after the system is started, and meanwhile, each maintenance valve, the pressure reducing valve and the one-way valve are all kept in the default states;
When the system is in operation, if municipal water inlet pressure is in a stable state, but equipment water outlet pressure is in an unstable state or an extremely unstable state, controlling a fifth electric valve to be opened, and enabling an energy storage tank to discharge water from a tank body of the energy storage tank through a second pressure reducing valve and the fifth electric valve, wherein at the moment, a compensation tank is used for water inlet pressure compensation, a bidirectional regulation tank is used for water outlet pressure compensation, and the energy storage tank is used for water outlet pressure compensation, so that water outlet compensation with double tank volume is realized;
When the system is in operation, if municipal water inlet pressure is in an unstable state, whether equipment water outlet pressure is stable or not, controlling a second electric valve to be opened, closing a fourth electric valve, opening a fifth electric valve, enabling a one-way valve to feed water to an energy storage tank, enabling the energy storage tank to discharge water from a tank body of the energy storage tank through a second pressure reducing valve and the fifth electric valve, opening a third electric valve after high pressure stored in a two-way regulating tank is reduced to water inlet set pressure through a first pressure reducing valve, wherein at the moment, a compensating tank is used for water inlet pressure compensation, the two-way regulating tank is used for water inlet pressure compensation, water inlet compensation with double tank volume is realized, and the energy storage tank is used for water outlet pressure compensation;
When the system is in operation, if municipal water inlet pressure is in an extremely unstable state, whether equipment water outlet pressure is stable or not, controlling a second electric valve to be opened, a fifth electric valve to be opened, closing a sixth electric valve, bidirectionally regulating high pressure stored in the tank and ultrahigh pressure stored in the energy storage tank, reducing pressure to water inlet set pressure through a first reducing valve, opening a third electric valve, enabling a one-way valve to enter the energy storage tank, enabling the energy storage tank to discharge water from the energy storage tank body through the second reducing valve and the fifth electric valve, wherein at the moment, the compensation tank is used for water inlet pressure compensation, the bidirectionally regulating tank is used for water inlet pressure compensation, and the energy storage tank is used for water inlet pressure compensation, so that water inlet compensation with three times of tank volume is realized;
and e, when the system stops running, the stability of municipal water inlet pressure and water outlet pressure is not considered any more, only the maximized water outlet small-flow pressure maintaining capacity is ensured, the frequent start and stop of equipment are avoided, the first electric valve is controlled to be closed, the second electric valve is controlled to be opened, the third electric valve is controlled to be opened, the fifth electric valve is controlled to be opened, the energy storage tank reduces the ultrahigh pressure stored in the tank to the dormancy starting pressure through the second pressure reducing valve, and at the moment, the energy storage tank, the compensation tank and the bidirectional regulating tank are all used for water outlet small-flow pressure maintaining, so that water outlet small-flow pressure maintaining with three times of tank volume is realized.
7. The control method of a multi-tank energy storage compensation type laminated variable frequency water supply system according to claim 3, further characterized by comprising a tank fault processing module, wherein a tank fault checking mechanism and a tank use adjusting mechanism are arranged in the tank fault processing module, and the tank fault checking mechanism is used for checking and determining a failed tank; the tank body purpose adjusting mechanism is used for adjusting the purpose of the compensation tank, the bidirectional adjusting tank and the energy storage tank according to the conditions of different events in the pressure fluctuation processing mechanism.
8. The method of claim 7, wherein the control process of the tank failure detection mechanism comprises,
The system selects a certain time period in late night, controls the first electric valve to be closed, the second electric valve to be opened, the third electric valve to be opened, and the fifth electric valve to be opened, and the equipment is in a dormant and stop running state to enter a small-flow pressure maintaining state in the time period, and the energy storage tank, the compensation tank and the bidirectional regulating tank are all used for maintaining the pressure of the small flow of the discharged water, so that the actual pressure of the discharged water is equal to the constant-pressure set pressure; the system controls the first electric valve to be kept closed, the third electric valve to be kept open, the fifth electric valve to be kept open, the sixth electric valve to be kept open, then the second electric valve to be controlled to be closed, the fourth electric valve to be closed, the energy storage tank to carry out water outlet small flow pressure maintaining, when the user uses water with small flow, the equipment water outlet pressure gradually drops, the air pressure in the energy storage tank can synchronously drop in the same amplitude, the time that the air pressure in the energy storage tank drops from constant pressure setting pressure to dormancy starting pressure is monitored through the air pressure sensor of the energy storage tank, if the time is smaller than the preset time of the system, the energy storage tank is judged to be faulty, otherwise, the energy storage tank is normal;
Then, the system controls the first electric valve to be kept closed, the second electric valve to be kept closed, the third electric valve to be kept open, the fifth electric valve to be kept open, the sixth electric valve to be kept open, then the fourth electric valve to be controlled to be opened, the energy storage tank and the bidirectional regulating tank together carry out small-flow water outlet pressure maintaining, and the energy storage tank can not maintain the small-flow pressure maintaining state at the moment when the pressure stored in the bidirectional regulating tank is equal to the constant-pressure set pressure, only the bidirectional regulating tank carries out small-flow water outlet pressure maintaining, when the small-flow water is used by a user, the equipment water outlet pressure gradually drops, the air pressure in the tank synchronously drops in the same amplitude, the time that the air pressure in the tank drops from the constant-pressure set pressure to the dormant starting pressure is monitored through the bidirectional regulating tank air pressure sensor, if the air pressure in the tank is smaller than the preset time of the system, the fault of the bidirectional regulating tank is judged, and otherwise the bidirectional regulating tank is normal;
Then, the system controls the first electric valve to be kept closed, the third electric valve to be kept open, the fourth electric valve to be kept open, the fifth electric valve to be kept open, the sixth electric valve to be kept open, then the second electric valve to be controlled to be opened, the energy storage tank, the bidirectional regulating tank and the compensating tank together carry out small-flow water outlet pressure maintaining, and the pressure stored in the compensating tank is equal to the constant pressure set pressure when the system is in a dormant state, the actual pressure of water outlet is instantaneously raised to the constant pressure set pressure again, at the moment, the energy storage tank and the bidirectional regulating tank can not maintain the small-flow pressure maintaining state, only the compensating tank is used for carrying out small-flow water outlet pressure maintaining, when the small-flow water is used by a user, the equipment outlet pressure can gradually decline, the air pressure in the tank can synchronously decline in the same amplitude, the time that the air pressure in the compensating tank declines from the constant pressure set pressure to the dormant starting pressure is monitored through the air pressure sensor of the compensating tank, if the time is smaller than the preset time of the system, the fault of the compensating tank is judged, and otherwise the compensating tank is normal.
9. The method of claim 8, wherein the control process of the tank usage adjustment mechanism comprises,
In the case of the event a, in which case,
If only the compensation tank fails or the compensation tank and the energy storage tank simultaneously fail, the system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be closed, the fifth electric valve to be opened and the sixth electric valve to be opened, and the two-way regulation tank is switched to carry out water inlet pressure compensation;
If only the bidirectional regulating tank is in fault, or only the energy storage tank is in fault, or both the bidirectional regulating tank and the energy storage tank are in fault, or the compensating tank, the bidirectional regulating tank and the energy storage tank are in fault, the system controls the first electric valve to be opened, the second electric valve to be closed, the third electric valve to be closed, the fourth electric valve to be opened, the fifth electric valve to be closed, the sixth electric valve to be opened, the compensating tank to be used for water inlet pressure compensation, the bidirectional regulating tank to be used for water outlet pressure compensation, the one-way valve to be used for water inlet to the energy storage tank, the energy storage tank to collect water hammer energy in the processes of starting and stopping of a pump or abnormal high pressure of the system and the like;
if the compensation tank fails and the bidirectional regulating tank fails at the same time, the first electric valve of the system is opened, the second electric valve is opened, the third electric valve is opened, the fourth electric valve is opened, the fifth electric valve is opened, the sixth electric valve is closed, and the energy storage tank is used for water inlet pressure compensation;
In the case of the event b, in which case,
If the bidirectional regulating tank and the energy storage tank simultaneously fail, the system controls the first electric valve to be closed, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be opened, and the compensation tank to be used for compensating the water outlet pressure;
The system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened and the sixth electric valve to be opened, and the energy storage tank is used for water outlet from the tank body through the second pressure reducing valve and the fifth electric valve, at the moment, the energy storage tank is used for water inlet pressure compensation, the two-way regulating tank is used for water outlet pressure compensation, and the energy storage tank is used for water outlet pressure compensation;
In the case of the event c, in which case,
If only the compensation tank is in fault or only the bidirectional regulating tank is in fault, or both the compensation tank and the bidirectional regulating tank are in fault, the system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be closed, and the energy storage tank to be used for water inlet pressure compensation;
The system controls the first electric valve to be opened, the second electric valve to be opened, the third electric valve to be closed, the fourth electric valve to be closed, the fifth electric valve to be opened, the sixth electric valve to be opened, the one-way valve to be filled into the energy storage tank, the energy storage tank to discharge water from the energy storage tank body through the second pressure reducing valve and the fifth electric valve, the third electric valve to be opened after the high pressure stored in the two-way regulating tank is reduced to the water inlet set pressure through the first pressure reducing valve, at the moment, the compensating tank is used for water inlet pressure compensation, the two-way regulating tank is used for water inlet pressure compensation, and the energy storage tank is used for water outlet pressure compensation;
in the case of the event d, in which case,
The system controls the second electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be closed, the high pressure stored in the bidirectional regulating tank and the ultrahigh pressure stored in the energy storage tank are depressurized to a water inlet set pressure through the first depressurization valve, then the third electric valve is opened, the one-way valve is opened to enter the energy storage tank, the energy storage tank discharges water from the energy storage tank body through the second depressurization valve and the fifth electric valve, at the moment, the compensation tank is used for water inlet pressure compensation, the bidirectional regulating tank is used for water inlet pressure compensation, and the energy storage tank is used for water inlet pressure compensation;
In the case of the event e the event,
The system controls the first electric valve to be closed, the second electric valve to be opened, the third electric valve to be opened, the fourth electric valve to be opened, the fifth electric valve to be opened, the sixth electric valve to be opened, the energy storage tank to decompress the ultrahigh pressure stored in the energy storage tank to the dormancy starting pressure through the second decompression valve, and at the moment, the energy storage tank, the compensation tank and the bidirectional regulating tank are all used for maintaining the pressure of the small flow of the discharged water.
10. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor realizes the steps of a method of controlling a multi-tank energy storage compensated variable-frequency stack water supply according to any one of claims 3-9.
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