JP3260476B2 - Water supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply device for supplying water to buildings such as condominiums, apartments, buildings or factories when a plurality of buildings are erected adjacently.

[0002]

2. Description of the Related Art Generally, a plurality of such standing buildings are provided with a pair of water supply pumps which operate alternately for each building with respect to a common water receiving tank to which water is supplied from city water supply. The water pump is used to supply water into individual buildings. In order to supply water into this building, an elevated water tank is provided on the roof of the building, the water sent by the water supply pump is temporarily stored in this elevated water tank, and water is supplied into the building by the potential energy of this water. There is a method and a method of accumulating water delivered by a water supply pump in a pressure tank and supplying water into the building using the water pressure of the pressure tank.

In the former method, when the water level in the elevated water tank falls to the reduced water level, the water supply request signal generating means is set to generate a water supply request signal, and when the water level in the elevated water tank reaches the full water level. A configuration in which the water supply request signal generating means is reset to make the water supply request signal disappear, the water supply pump is operated during the period when the water supply request signal is generated, and the water supply pump is stopped when the water supply request signal disappears. By using, the water level of the elevated water tank in each building is kept in the range from the reduced water level to the full water level.

In the latter method, when the water pressure in the pressure tank drops to the reduced water level, the water supply request signal generating means is set to generate a water supply request signal, and when the water pressure in the pressure tank reaches the full water level. A configuration in which the water supply request signal generating means is reset to make the water supply request signal disappear, the water supply pump is operated during the period when the water supply request signal is generated, and the water supply pump is stopped when the water supply request signal disappears. By using, the pressure in the pressure tank of each building is maintained in the range from the reduced water level to the full water level.

As described above, in both the case using the elevated water tank and the one using the pressure tank, the drive of the water supply pump is controlled by the presence or absence of a water supply request signal. Although the width of the time changes, both feed pumps operate intermittently. In addition, a pair of water supply pumps are provided to keep the water essential for daily life, and to supplement the operation of the other water supply if one fails, as described above. The plurality of water supply pumps are operated alternately with respect to the operation, so that both water supply pumps are always kept in operation, so that rust and deterioration are reduced.

[0006]

However, the above-mentioned water supply apparatus has two pairs of water supply pumps for each building, no matter how close the building stands, so that the number of buildings is two. It was necessary to prepare double the number of water supply pumps, and daily maintenance work as well as construction, plumbing, and wiring was very troublesome.

An object of the present invention is to provide a water supply device capable of stably supplying water to each building with a small number of water supply pumps.

[0008]

According to a first aspect of the present invention, there is provided a water supply apparatus for supplying water to a plurality of buildings, wherein the water supply apparatus operates for each building in response to a water supply request signal from each building. A water supply pump for supplying water to each building is installed, and an auxiliary water supply pump is provided separately from the water supply pump for each building, and the output part of this auxiliary water supply pump is connected to the output part of the water supply pump for each building via a valve. Pump control means which alternately operates in response to a water supply request signal from a selected one building in combination with an auxiliary water pump and a water pump corresponding to one arbitrarily selected building. And

A water supply device according to a second aspect of the present invention is the water supply device according to the first aspect, wherein each valve is an electric valve that opens and closes in response to an electric signal, and valve control means that opens and closes the electric valve is provided. A signal that opens one electric valve and closes the remaining electric valves so that the output part of the auxiliary water supply pump communicates with the output part of the water supply pump corresponding to one building selected by the valve control means at all times. Output, the pump control means to alternately operate the auxiliary water supply pump and the water supply pump corresponding to the selected one building in response to a water supply request signal from the selected building in pairs, and from each building. One electric valve corresponding to the building that has output the drought signal from the valve control means in response to the input of the drought signal of the other is opened, and the remaining electric valve corresponding to the remaining building is opened. Outputs close the blanking signal, and so as to operate independently in response to auxiliary feedwater pump to the water supply request signal from the building which outputs the drought signal.

According to a third aspect of the present invention, in the water supply apparatus for supplying water to a plurality of buildings, the water supply apparatus operates for each building in response to a water supply request signal from each building to supply water to the buildings. A water supply pump is installed, and a main valve is provided at an output part of the water supply pump that supplies water into the building, and an output part of the water supply pump is connected to an output part of another water supply pump through a connection valve on a water supply pump side of the main valve. Is connected to the department.

According to a fourth aspect of the present invention, there is provided the water supply apparatus according to the third aspect, wherein the main valve and the connection valve are electrically operated valves that open and close in response to an electric signal, and the main valve and the connection valve are opened and closed. Means, the valve control means normally outputs a signal that opens the main valve and closes the connection valve, operates the water supply pump corresponding to each building in response to a water supply request signal from each building, In response to the input of the signal, the connection valve is opened and the signal to close the main valve provided at the output of the feedwater pump on the connection side is output, and the connection is made in response to the water supply request signal from the building that output the drought signal. Side water pump is operated.

According to a fifth aspect of the present invention, in the water supply apparatus according to the fourth aspect, in response to the disappearance of the water supply request signal from the building that has output the drought signal, the valve control means controls the water supply pump on the connected side. The main valve provided in the output section is opened and a signal for closing the connection valve is output, and the water supply pump on the connection side is operated in response to a water supply request signal from the building on the connection side.

According to a sixth aspect of the present invention, in the water supply apparatus of the fourth aspect, a holding means for holding an abnormal mode in response to the occurrence of a drought signal is provided, and a period in which the holding means holds the abnormal mode. During the connection, the main valve provided at the output part of the water supply pump on the connected side is opened by the valve control means, a signal for closing the connection valve is output, and in response to a water supply request signal from the building on the connected side, the A first operation for operating a water supply pump, and a water supply request from a building which outputs a signal to open a connection valve and outputs a drought signal by closing a main valve provided at an output portion of a water supply pump on a connected side by a valve control means. The second operation of operating the water supply pump on the connected side in response to the signal is selectively performed.

According to a seventh aspect of the present invention, there is provided the water supply apparatus according to the fourth aspect, further comprising: holding means for holding the abnormal mode in response to the occurrence of the drought signal, wherein the holding means holds the abnormal mode. During the connection, the main valve provided at the output part of the water supply pump on the connected side is opened by the valve control means, a signal for closing the connection valve is output, and in response to a water supply request signal from the building on the connected side, the A first operation for operating a water supply pump, and a water supply request from a building which outputs a signal to open a connection valve and outputs a drought signal by closing a main valve provided at an output portion of a water supply pump on a connected side by a valve control means. A second operation for operating the connected-side water supply pump in response to the signal is selectively performed, and a water supply request signal from a building that outputs a drought signal during execution of the first operation is generated. When When the water supply request signal from the connected building is generated during the execution of the second operation while the second operation is executed with priority and the first operation is restarted after the completion of the second operation. The first operation is executed with priority and the second operation is restarted after the first operation is completed.

In a water supply apparatus for supplying water to a plurality of buildings, an electric valve that opens and closes in response to an electric signal is provided in a water distribution section to each of the buildings. Each electric motor responds to the water supply request signal from
Valve control means for outputting a signal for controlling the opening and closing of the valve
The provided a plurality of feed water pump to perform an operation to pump water to the water distribution unit cyclically <br/> provided, operating controls to sequentially cyclically a plurality of the water supply pump in response to a water supply request signal Water The apparatus, wherein the valve control means comprises a plurality of buildings.
During the period when the water supply request signal from
Multiple electric valves are opened cyclically in sequence for a predetermined time.
To open and close multiple electric valves
Characterized in that it was.

[0016]

According to a ninth aspect of the present invention, when the drought signal is input, the valve control means is configured to preferentially open the electric valve for supplying water to the building that has output the drought signal. .

[0018]

According to the structure of the first aspect, one valve is normally opened so that the output of the auxiliary water supply pump communicates only with the output of the water supply pump corresponding to one arbitrarily selected building. Close the remaining valves. At this time, the auxiliary water supply pump and the water supply pump corresponding to the selected one building are paired and alternately operated in response to a water supply request signal from the selected building. The water supply pumps corresponding to the remaining buildings are independently operated in response to a water supply request signal from the building.

When one of the water supply pumps for each building fails or becomes abnormal due to a failure or abnormality, one valve corresponding to the building that outputs the drought signal is opened, and the remaining valve corresponding to the remaining building is opened. Close the valve. The auxiliary water pump operates alone in response to a water supply request signal from the building that has output the drought signal. The water supply pumps corresponding to the remaining buildings are independently operated in response to a water supply request signal from the building.

According to the second aspect of the present invention, one electric valve is automatically operated so that the output of the auxiliary water supply pump communicates with the output of the water supply pump corresponding to the selected one building at all times. And the remaining electric valves close automatically. At this time, the auxiliary water supply pump and the water supply pump corresponding to the selected one building are paired and alternately operated in response to a water supply request signal from the selected building. The water supply pumps corresponding to the remaining buildings are independently operated in response to a water supply request signal from the building.

In addition, in response to the input of the drought signal from each building, one electric valve corresponding to the building that has output the drought signal is automatically opened, and the other electric valves corresponding to the remaining buildings are automatically closed. . At this time, the auxiliary water pump is operated alone in response to the water supply request signal from the building that has output the drought signal. The water supply pumps corresponding to the remaining buildings are independently operated in response to a water supply request signal from the building.

According to the third aspect of the present invention, the main valve is normally opened and the connection valve is closed. At this time, a water supply pump corresponding to each building is operated in response to a water supply request signal from each building. Also, when one of the water supply pumps for each building fails or becomes abnormal due to a failure or abnormality, the connection valve connected to the output part of the water supply pump corresponding to the building that output the drought signal is opened and connected. Close the main valve of the side water pump. At this time, the connected water supply pump is operated in response to the water supply request signal from the building that has output the drought signal.

According to the configuration of the fourth aspect, the main valve is automatically opened and the connection valve is automatically closed at all times. At this time, a water supply pump corresponding to each building is operated in response to a water supply request signal from each building. In addition, in response to the input of the drought signal from each building, the connection valve connected to the output of the water supply pump corresponding to the building that outputs the drought signal automatically opens, and the main valve of the water supply pump on the connected side is automatically turned on. Close. At this time, the connected water supply pump is operated in response to the water supply request signal from the building that has output the drought signal.

According to the fifth aspect of the present invention, when the water supply request signal from the building that outputs the drought signal disappears, the main valve provided at the output part of the water supply pump on the connected side automatically opens, and the connection valve is opened. Automatically closes. At this time, the water supply pump on the connected side is operated in response to a water supply request signal from the building on the connected side. As a result, water supply to the connected building is performed without any trouble.

According to the sixth aspect of the present invention, while the abnormal mode is maintained, the valve control means opens the main valve provided at the output of the feed water pump on the connected side and closes the connected valve. And a first operation for operating the water supply pump on the connected side in response to a water supply request signal from the building on the connected side, and a main valve provided at an output portion of the water supply pump on the connected side by valve control means. And the second operation of operating the connected-side water supply pump in response to the water supply request signal from the building that outputs the signal that opens the connection valve and outputs the drought signal, and that is selectively performed, Water supply to the building that has output the drought signal and water supply to the connected building are performed on an equal relationship.

According to the seventh aspect of the present invention, during the period in which the abnormal mode is maintained, the valve control means opens the main valve provided at the output part of the feedwater pump on the connected side and closes the connected valve. And a first operation for operating the water supply pump on the connected side in response to a water supply request signal from the building on the connected side, and a main valve provided at an output portion of the water supply pump on the connected side by valve control means. The second operation of operating the water supply pump on the connected side in response to the water supply request signal from the building that has output the signal to open the connection valve and output the drought signal to close the connection valve is selectively performed. Further, when a water supply request signal from a building that has output a drought signal during execution of the first operation is generated, the second operation is executed with priority,
After completion of the second operation, the first operation is resumed. When a water supply request signal from the connected building is generated during execution of the second operation, the first operation is executed with priority, and the first operation is executed. After the end of the operation, the second operation is restarted. As a result, it is less likely that the connected building will be in a drought state during the water supply to the building that has output the drought signal, and that the building that has output the drought signal during the water supply to the connected building will be in a drought state. it can.

[0027] According to the configuration of claim 8, it would supply the water operates to sequentially cyclically the plurality of the water supply pump in response to a water supply request signal. In addition, in response to the water supply request signal from each building , the electric valve for supplying water to the building that has generated the water supply request signal automatically opens. Further, during a period in which water supply request signals from a plurality of buildings overlap, a plurality of valves are opened and closed so as to sequentially open a plurality of electric valves sequentially for a predetermined period of time. It is possible to reduce the risk that any of the other buildings will be in a drought state during the water supply to one of the buildings.
Water supply request signals from multiple buildings may overlap.
Have the capacity to supply water for one building
Water supply to multiple buildings using only a small capacity water supply pump
Can therefore be performed at a lower equipment cost
It can respond to simultaneous water supply requests from buildings.

According to the configuration of the ninth aspect , when the drought signal is input, the electric valve that supplies water into the building that has output the drought signal opens preferentially, so that the drought of the building that has generated the drought signal is output. Can be prevented.

[0029]

【Example】

[First Embodiment] A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1 and FIG. 2, this water supply device supplies water to a plurality of, for example, three buildings 1 to 3.
The water supply pumps 4 to 6 which operate in response to the water supply request signal from 3 and supply water into the buildings 1 to 3 are respectively installed, and
An auxiliary water supply pump 7 is provided separately from the water supply pumps 4 to 6 for each of the three buildings. And a pump which is alternately operated in response to a water supply request signal from one selected building 1 in combination with an auxiliary water supply pump 7 and a water supply pump corresponding to one arbitrarily selected building, for example. Control means (not shown) is provided. This pump control means is provided in the control panel 20 of FIG.

Water supply pumps 4 to 6 and auxiliary water supply pump 7
The water stored in the common water receiving tank 12 for each of the buildings 1 to 3 supplied with water from the city water supply 11 is supplied to the main piping 13 to
The water is supplied to elevated water tanks 16 to 18 individually provided on the roof of each of the buildings 1 to 3 through the auxiliary pipes 15 and 15. The water receiving tank 12 and the elevated water tanks 16 to 18 are provided with water level detecting electrode devices 21 to 24, respectively.
The water level detecting electrode device 21 of the water receiving tank 12 includes four electrodes including one common electrode (the longest electrode) and three water level detecting electrodes, and controls the drought level, the reduced water level, and the full water level. The control panel 20 controls the water level of the water receiving tank 12 between the reduced water level and the full water level, and when the water level falls to the drought level. Alarm, or water supply pumps 4 to 6 and auxiliary water supply pump 7
Operation of the water supply pumps 4-6
In addition, the idle operation of the auxiliary water pump 7 is prevented.

The water level detecting electrode devices 22 to 24 of the elevated water tanks 16 to 18 are each composed of five electrodes including one common electrode (longest electrode) and four water level detecting electrodes. , A drought level, a low water level, a full water level, and an abnormally high water level, and supplies a water level detection signal to the control panel 20. The control panel 20 reduces the water level of the elevated water tanks 16 to 18 to the low water level and the low water level. While controlling during the full water level, when the water level falls to the drought level and raises an alarm when the water level exceeds the abnormally high water level, or when the water level falls below the drought level, the auxiliary water supply pump will be described later. 7 is used to perform operations such as supplying water to an elevated water tank, for example, 18 whose water level has fallen below the drought level.

In this water supply apparatus, one valve 8 is normally opened so that the output part of the auxiliary water supply pump 7 communicates only with the output part of the water supply pump 4 corresponding to one arbitrarily selected building 1. Valves 9 and 10 are closed. At this time, the auxiliary water supply pump 7 and the water supply pump 4 corresponding to the selected one building 1 are paired and alternately operated in response to a water supply request signal from the selected building 1. That is, every time a water supply request signal from the building 1 is generated, the water supply pump 4
The auxiliary water supply pump 7 and the auxiliary water supply pump 7 are alternately operated to supply water from the water receiving tank 12 to the elevated water tank 16 through the main pipe 13. The water supply pumps 5 and 6 corresponding to the remaining buildings 2 and 3 are operated independently in response to a water supply request signal from the buildings 2 and 3,
Water is supplied from the water receiving tank 12 to the elevated water tanks 17 and 18 through the main pipes 14 and 15, respectively. As described in the conventional example, the water supply request signal rises when the water level in the elevated water tanks 16 to 18 falls below the reduced water level, and falls when the water level exceeds the full water level. That is, the elevated water tank 1
After the water level in 6 to 18 falls below the water reduction level, a water supply request signal is generated for a period until the water level exceeds the full water level. Therefore, the water level of the elevated water tanks 16 to 18 is maintained in a range from the reduced water level to the full water level.

When one of the water supply pumps 4 to 6 for each of the buildings 1 to 3 fails or fails to supply water due to a failure or abnormality, and the water level falls to a drought level, the building that has output a drought signal, for example, 3 Is opened and the remaining valves 8, 9 corresponding to the remaining buildings 1, 2 are closed. The auxiliary water supply pump 7 is operated independently in response to a water supply request signal from the building 3 that has output the drought signal. The auxiliary water supply pump 7 supplies the elevated water tank 18 of the building 3 from the water receiving tank 12 to the auxiliary pipe 19 and the main pipe 15. To maintain the water level in the elevated water tank 18 in a range from a reduced water level to a full water level. Water pumps 4, corresponding to the remaining buildings 1, 2
5 is operated independently in response to a water supply request signal from the buildings 1 and 2, and the main pipes 13 and 14 are respectively connected to the elevated water tanks 16 and 17 of the buildings 1 and 2 from the water receiving tank 12 by the water supply pumps 4 and 5. The water level is supplied to the elevated water tanks 16 and 17 to keep the water level in a range from a reduced water level to a full water level.

FIG. 3 is a block diagram showing an example of the control panel 20 of the water supply apparatus shown in FIGS. In FIG. 3, 31 to 34 are water level detecting means connected to the water level detecting electrode devices 21 to 24, and 35 to 37 are elevated water tanks 16 to 18.
Abnormality display means 38 for individually displaying abnormalities such as drought, abnormally high water, and the like, and 38 is a common alarm means for issuing an alarm sound when abnormalities such as drought, abnormally high water, etc. of the elevated water tanks 16 to 18 occur. 39
Reference numeral denotes a failure handling switch group for setting a failed water supply pump, and reference numeral 40 denotes signal processing means for processing the output signals of the water level detection means 32 to 34 and the failure handling switch group 39. Reference numerals 41 to 44 denote pump driving means for driving the water supply pumps 4 to 6 and the auxiliary water supply pump 7 based on the output signal of the signal processing means 40.

FIG. 4 is a circuit diagram showing an example of the failure handling switch group 39 and the signal processing means 40 in FIG. In this circuit, the water supply pump 4 and the auxiliary water supply pump 7 are alternately operated at all times, and the water supply pumps 5 and 6 are independently operated. The circuit configuration is such that the operation of only one water supply pump, for example, 6 which has failed due to the setting of the failure handling switch group 39 is stopped, and the auxiliary water supply pump 7 can be operated in place of the water supply pump 6.

In FIG. 4, S₁Is an elevated water tank 1
Water supply request signal for requesting water supply to 6 has risen
To turn on, and to turn off when the water supply request signal falls
Switch. Similarly, S_TwoGoes to elevated water tank 17
Corresponding to the water supply request signal of _ThreeIs the water supply to the elevated water tank 18
A switch corresponding to the request signal. S_Four~ S₇Are each
Failure of water supply pumps 4 to 6 and auxiliary water supply pump 7
This is a failure response switch that sets only one switch.
Are multiple push switches that can be turned on only one of them
With the configuration, the failure handling switch S_Four~ S₇For the failure of Fig. 3
The switch group 39 is constituted.

When the drought signal is output from the elevated water tank 16, it is considered that either the water supply pump 4 or the auxiliary water supply pump 7 is out of order. out of the failed whichever of failure countermeasure switch S ₄ or S ₇ corresponding to the manually set to oN. When drought signal from the elevated water tank 17 is output, since the feed water pump 5 is considered a failure, manually set to ON failure countermeasure switch S ₅ corresponding to the feed water pump 5. Similarly, when the drought signal from elevated tank 18 is output, since the feed water pump 6 is considered a failure, manually set the failure corresponding switch S ₆ corresponding to the feed water pump 6 on.

FF is a water supply request signal to the elevated water tank 16.
(Switch S₁Water pump 4 each time
And the auxiliary water supply pump 7 to operate alternately.
It is a flop. X₁~ X_FourIs a water supply pump 4
6 and a relay for driving the auxiliary water supply pump 7.
NA₁~ NA_FourIs the failure response switch S_Four~ S₇Is off
A NAND gate that sometimes opens. AN₁~ AN₆Haso
AND gate, OR respectively₁~ OR _ThreeAre OR
, IN₁~ IN_ThreeIs an inverting circuit, D₁~ D_Four
Are diodes.

The operation of the circuit shown in FIG. 4 will be briefly described.
You. Water supply pumps 4 to 6 and auxiliary water supply pump 7 are all correct.
When it is normal, the failure handling switch S_Four~ S₇All
Keep it. In this state, the NAND gate NA ₁~
NA_FourAre all open. Also, an AND gate AN₁,
AN_Four~ AN₆Are all closed. As a result, the switch
S₁Is turned on by flip-flop FF
Relay X with one selected₁And X_FourOne of
Operate, water supply pump 4 and auxiliary water supply pump 7 alternate
And water is supplied to the elevated water tank 16. Also, switch
Chi S_TwoRelay X each time is turned on_TwoWorking water pon
Is operated and the switch S_ThreeRelay is turned on every time
X_ThreeOperates to operate the water supply pump 6 and the elevated water tank 1
Water is supplied to 7, 18 respectively.

[0040] When the water supply pump 4 has failed, to turn on only the failure corresponding switch S _4, to turn off the rest. In this state, NAND gate NA ₁ is closed, also opens AND gate AN _4. As a result, each time the switch S ₁ is turned on, the relay X ₄ is operated, the auxiliary water supply pump 7 is operated independently, and water is supplied to the elevated water tank 16. Also, each time the switch S ₂ is turned on, the relay X ₂ is operated to operate the water supply pump 5, and each time the switch S ₃ is turned on, the relay X ₃ is operated to operate the water supply pump 6. 1
Water is supplied to 7, 18 respectively.

[0041] When the water supply pump 5 has failed, to turn on only the failure corresponding switch S _5, to turn off the rest. In this state, closing the NAND gate NA ₂ is also opened AND gate AN _1, AN _5. As a result, each time the switch S ₁ is turned on, the relay X ₁ operates and the water supply pump 4
Is operated independently, and water is supplied to the elevated water tank 16. The auxiliary feedwater pump 7 relay X ₄ each time the switch S ₂ is turned on is operated is operated, the water supply pump 6 is operated relay X ₃ each time the switch S ₃ is turned on is operated, the elevated Water is supplied to the water tanks 17 and 18, respectively.

[0042] When the water supply pump 6 has failed, to turn on only the failure corresponding switch S _6, to turn off the rest. In this state, it closed NAND gate NA _3, also the AND gate AN _1, AN ₆ is opened. As a result, each time the switch S ₁ is turned on, the relay X ₁ operates and the water supply pump 4
Is operated independently, and water is supplied to the elevated water tank 16. Also, the water supply pump 5 is operated by operating the relay X ₂ is each time the switch S ₂ is turned on, the auxiliary feedwater pumps 7 relay X ₄ each time the switch S ₃ is turned on is operated is operated, elevated Water is supplied to the water tanks 17 and 18, respectively.

[0043] When the auxiliary feedwater pump 7 has failed, the ON failure corresponding switches S ₇ only to turn off the rest.
In this state, NAND gate NA ₄ is closed and
D gate AN ₁ is open. As a result, every time the switch S ₁ is turned on, the relay X ₁ is operated, the water supply pump 4 is operated independently, and the water is supplied to the elevated water tank 16. Also, each time the switch S ₂ is turned on, the relay X ₂ is operated to operate the water supply pump 5, and each time the switch S ₃ is turned on, the relay X ₃ is operated to operate the water supply pump 6. 1
Water is supplied to 7, 18 respectively.

FIG. 5 shows a time chart of each part in FIG.
You. FIG. 3A shows the water level of the elevated water tank 16.
(B) Switch S₁ON / OFF state, that is, elevated water tank
16 shows the level of a water supply request signal to the water supply request signal 16. Same figure
(C) The water level of the elevated water tank 17 is shown, and FIG.
Chi S_TwoON / OFF state, that is, water supply to the elevated water tank 17 is required.
It shows the level of the request signal. Figures (e) and (f) show the late
Obstacle switch S_Four, S_FiveIndicates the on / off state of the
Level is failure switch S_Four, S_FiveIs off,
Low-level failure S_Four, S_FiveIs on
It is. (G) and (h) of FIG.
(I) and (j) in FIG.
Is the AND gate AN_Two, AN_ThreeThe output of
(K) OR gate OR _ThreeFIG. 1 (l) shows the output of
AND gate AN₁(M) shows the output of the OR gate.
Auto OR₁(N) and (o) of FIG.
Gate AN_Four, AN_FiveThe output (p) of FIG.
Gate OR_Two(Q), (r),
(S) shows the NAND gate NA₁, NA_Two, NA_FourOut of
Showing power.

In the first half of FIG. 5, water is supplied to the elevated water tank 16 using the water supply pump 4 and the auxiliary water supply pump 7, and water is supplied to the elevated water tank 17 using the water supply pump 5.
The time chart when the water supply pump 4 breaks down and the auxiliary water supply pump 7 is switched to supply water to the elevated water tank 16 by itself is shown. 5 supplies water to the elevated water tank 16 using the water supply pump 4 and the auxiliary water supply pump 7,
A time chart is shown when the water supply pump 5 breaks down while supplying water to the elevated water tank 17 using the water supply pump 5 and the auxiliary water supply pump 7 switches to supply water to the elevated water tank 17.

According to the water supply system of this embodiment, each building 1
In addition to providing one water supply pump 4 to 6 for each of ~ 3, one auxiliary water supply pump 7 is provided for all buildings 1 to 3, and the output section of the auxiliary water supply pump 7 and each building 1 to
A valve 8 for connecting the output of each of the three feed pumps 4 to 6
By simply providing 10 to 10, that is, it is possible to stably supply water to each of the buildings 1 to 3 with a small number of water supply pumps. In addition, since the auxiliary water supply pump 7 and one water supply pump 4 are always operated alternately as a pair, not only the water supply pumps 4 to 6 in each of the buildings 1 to 3 but also the auxiliary water supply pump 7 is always in the operating state. The auxiliary water supply pump 7 can be less likely to malfunction when it is abnormal due to rust or deterioration.

[0047] Second Embodiment] will be described based the second embodiment of the present invention in FIGS. 6-8. As shown in FIG. 6, this water supply device uses electric valves 8A, 9A, and 10A that open and close in response to electric signals instead of the manual valves 8 to 10 in FIG. Valve control means (not shown) for opening and closing 9A and 10A is provided, and the output of the auxiliary water supply pump 7 is normally provided to the output section of the water supply pump 4 corresponding to one building, for example, 1 selected by the valve control means. A signal is output to open one electric valve 8A and to close the remaining electric valves 9A and 10A so as to communicate the parts,
The auxiliary water supply pump 7 and the water supply pump 4 corresponding to the selected one building 1 are paired by pump control means (not shown) and alternately operated in response to a water supply request signal from the selected building 1. In this way, one electric valve 10A corresponding to the building, for example, 3 which outputs the drought signal from the valve control means in response to the input of the drought signal from each of the buildings 1 to 3 is opened, and the rest corresponding to the remaining buildings 1, 2 is opened. Electric valve 8
A signal for closing A and 9A is output, and the auxiliary water supply pump 7 is operated independently in response to a water supply request signal from the building 3 that has output the drought signal. This valve control means is provided in the control panel 20A of FIG.

In this water supply apparatus, one electric valve 8A is automatically operated so that the output of the auxiliary water supply pump 7 is always connected to the output of the water supply pump 4 corresponding to one selected building 1. Open and remaining electric valve 9
A, 10A closes automatically. At this time, the auxiliary water supply pump 7 and the water supply pump 4 corresponding to the selected one building 1 are paired and alternately operated in response to a water supply request signal from the selected building 1. The water supply pumps 5 and 6 corresponding to the remaining buildings 2 and 3 are independently operated in response to a water supply request signal from the buildings 2 and 3.

Further, one electric valve 10A corresponding to the building 3 which has output the drought signal in response to the input of the drought signal from each of the buildings 1 to 3 is automatically opened, and the remaining valve corresponding to the remaining buildings 1 and 2 is automatically opened. Are automatically closed.
At this time, the auxiliary water pump 7 is independently operated in response to the water supply request signal from the building 3 that has output the drought signal. The water supply pumps 4 and 5 corresponding to the remaining buildings 1 and 2 are independently operated in response to the water supply request signals from the buildings 1 and 2. FIG. 8 is a block diagram illustrating an example of the control panel 20A of the water supply device illustrated in FIGS. 6 and 7. In FIG. 8, 31
34 is a water level detecting means connected to the water level detecting electrode devices 21 to 24, 35 to 37 are droughts of the elevated water tanks 16 to 18,
Abnormality display means for individually displaying abnormalities such as abnormally high water, 38
Is a common alarm unit that emits an alarm sound when an abnormality such as a drought of the elevated water tanks 16 to 18 or an abnormal increase in water occurs. 45 to 47 are motorized valves 8 based on the outputs of the abnormality display means 35 to 37.
Valve control means for controlling the opening and closing of A to 10A. 4
8 is an abnormality display means 35 to 37 and a signal processing means 40
Failure determination means for determining a failure state based on the output of
49 is a failure handling switch S _{4 of} FIG. 4 based on the outputs of the abnormality display means 35 to 37 and the output of the failure determination means 48.
A fault signal processing means for performing an on-off switching operation equivalent to the operation of the to S _7, in place of any failure countermeasure switch group 39 in FIG. 3. Numeral 40 is a signal processing means for processing the output signals of the water level detecting means 32 to 34 and the failure signal processing means 49. Reference numerals 41 to 44 denote pump driving means for driving the water supply pumps 4 to 6 and the auxiliary water supply pump 7 based on the output signal of the signal processing means 40. The configuration of the signal processing means 40 is the same as in the first embodiment.

In this embodiment, the electric valves 8A, 9A, 10 are operated in response to the input of the drought signal from each of the buildings 1 to 3.
A is similar to the first embodiment except that A is automatically opened and closed. According to the water supply device of this embodiment, one electric valve 10A corresponding to the building 3 that has output the drought signal in response to the input of the drought signal from each of the buildings 1 to 3 is automatically opened, and the remaining buildings 1 and 2 are opened. Since the remaining electric valves 8A and 9A corresponding to 2 automatically close, an abnormal state can be automatically eliminated in the event of an abnormality, and urgency can be taken by the repair staff.

[Third Embodiment] A third embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 9 and 10, the water supply device includes a plurality of buildings 51,
The water supply pumps 53 and 54 operate in response to water supply request signals from the buildings 51 and 52 and supply water to the buildings 51 and 52.
Are installed, and the buildings 51,
Manual main valves 55, 5
6 and the feed pumps 53, 54 of the main valves 55, 56
On the side, the outputs of the feed pumps 53, 54 are connected to one another via a manual connection valve 57.

The water supply pumps 53 and 54 supply the water stored in the common water receiving tank 59 for each of the buildings 51 and 52 receiving the water supply from the city water supply 58 to the roof of each of the buildings 51 and 52 through the main pipes 60 and 61. Elevated water tank 6 provided separately for example
2 and 63. The water receiving tank 59 and the elevated water tanks 62 and 63 are respectively provided with water level detecting electrode devices 65 to 65.
67 are provided. The water level detection electrode device 65 of the water receiving tank 59 is composed of four electrodes including one common electrode (longest electrode) and three water level detection electrodes, and controls the drought level, the water reduction level, and the full water level. The control panel 64 detects the water level and supplies the water level detection signal to the control panel 64.
4 controls the water level of the water receiving tank 59 between the reduced water level and the full water level, and issues an alarm when the water level falls to the drought level, or the water supply pump 53,
54, for example, by forcibly stopping the operation of the water supply pump 5.
3, 54 are prevented from running idle.

The water level detecting electrode devices 66 and 67 of the elevated water tanks 62 and 63 are each composed of five electrodes including one common electrode (longest electrode) and four water level detecting electrodes. , A drought level, a low water level, a full water level, and an abnormally high water level are detected, and a water level detection signal is supplied to a control panel 64. Control is performed during the full water level, and when the water level falls to the drought level and when the water level exceeds the abnormally high water level, an alarm is issued, or when the water level falls below the drought level, as described later, the water supply pump 53 is used. , 54 to both elevated water tanks 6
An operation of supplying water to an elevated water tank whose water level has fallen below the drought level, for example, 62, is used for both water supply to the tanks 2 and 63.

In this water supply device, the main valve 55,
56 is opened and the connection valve 57 is closed. At this time, in response to the water supply request signal from each of the buildings 51 and 52, each of the buildings 5
Operate the water supply pumps 53 and 54 corresponding to
Water is supplied to the elevated water tanks 62 and 63 through the main pipes 60 and 61. As described in the conventional example, the water supply request signal rises when the water level in the elevated water tanks 62 and 63 falls below the reduced water level, and falls when the water level exceeds the full water level. That is, after the water levels in the elevated water tanks 62 and 63 fall below the water reduction level, a water supply request signal is generated for a period until the water level next exceeds the full water level. Therefore, the water levels of the elevated water tanks 62 and 63 are maintained in the range from the reduced water level to the full water level.

When any one of the water supply pumps of the buildings 51 and 52 fails to supply water due to a failure or abnormality, the water supply pump is connected to the output section of the water supply pump 53 corresponding to the building 51 which has output the drought signal. The connected valve 57 is opened, and the main valve 56 of the water supply pump 54 on the connected side is closed. At this time, the connected water supply pump 54 is operated in response to a water supply request signal from the building 51 that has output the drought signal, and water is supplied to the elevated water tank 62 through the main pipe 60. Note that when the water supply pump 54 is operating to supply water to the elevated water tank 63, the system waits for the supply of water to the elevated water tank 63 to be completed.
The water supply pump 54 is operated again to supply water to the elevated water tank 62. When the water supply to the elevated water tank 62 is completed, the connection valve 57 is closed and the main valve 56 is opened to supply water to the elevated water tank 63.

FIG. 11 is a block diagram showing an example of the control panel 64 of the water supply device shown in FIGS. 9 and 10. 11, reference numerals 71 to 73 denote water level detection electrode devices 65 to 67.
, Water level detecting means 74, 75 are elevated water tanks 62,
Abnormality display means for individually displaying abnormalities such as drought and abnormally high water in 63, and common alarm means for issuing an alarm sound when abnormalities such as drought and abnormally high water in the elevated water tanks 62 and 63 occur.
77, 78 are failure handling switches that perform a switching operation according to the failed water supply pump 53 or 54. 79,
Reference numeral 80 denotes a pump driving unit that drives the water supply pumps 53 and 54 according to the outputs of the water level detection units 72 and 73.

The water supply apparatus of this embodiment can stably supply water to each of the buildings 51 and 52 only by providing the same number of water supply pumps 53 and 54 as the number of buildings, that is, with a small number of water supply pumps. . In the above embodiment, the building is 2
Although the embodiment in which the number of water supply pumps is two in the door is shown, in a system in which the number of buildings is three or more and the number of water supply pumps is three or more (the same number as the buildings), each water supply pump is provided in the same manner as in the above embodiment. The same effect as described above can be achieved by providing a main valve at the output section and providing a connection valve that mutually connects the output sections of the water supply pumps.

[Fourth Embodiment] A fourth embodiment of the present invention will be described with reference to FIGS. This water supply device, as shown in FIG. 12, replaces the manual main valves 55 and 56 and the connection valve 57 of FIGS. 9 and 10 with electric main valves 55A and 56A that open and close in response to electric signals.
And the electric main valve 55 using the electric connection valve 57A.
A, 56A and valve control means (not shown) for opening and closing the electric auxiliary valve 57A are provided.

Normally, the valve control means outputs a signal for opening the electric main valves 55A and 56A and closing the electric connection valve 57A, and responds to a water supply request signal from each of the buildings 51 and 52 so as to respond to the water supply request signal. In response to the input of a drought signal in the buildings 51, 52, the electric connection valve 57A is opened in response to the input of the drought signal in the buildings 51, 52, and the electric main valve 56A provided at the output portion of the water supply pump 54 on the connected side.
In response to the water supply request signal from the building 51 that has output the drought signal, the water pump 54 on the connected side.
To make it work.

Further, in response to the disappearance of the water supply request signal from the building 51 which has output the drought signal, the valve control means opens the electric main valve 56A provided at the output part of the water supply pump 54 on the connected side to open the electric connection. A signal for closing the valve 57A is output, and the water supply pump 54 on the connected side is operated in response to a water supply request signal from the building 54 on the connected side. The valve control means is provided in the control panel 64A of FIG.

In this water supply device, the electric main valve 5
5A and 56A are automatically opened, and the electric connection valve 57A is automatically closed. At this time, the water supply pumps 53, 54 corresponding to the buildings 51, 52 are operated in response to the water supply request signals from the buildings 51, 52. In addition, each building 51,
The electric connection valve 57A connected to the output of the water supply pump 53 corresponding to the building 51 that has output the water shortage signal in response to the input of the water shortage signal from 52 automatically opens, and the electric motor of the water supply pump 54 on the connected side is automatically opened. Valve 56A automatically closes.
At this time, the connected water supply pump 54 is operated in response to a water supply request signal from the building 51 that has output the drought signal.

Then, when the water supply request signal from the building 51 which has output the drought signal disappears, the water supply pump 5
The motor-operated main valve 56A provided at the output unit 4 automatically opens, and the motor-operated connection valve 57A automatically closes. At this time, the water supply pump 54 on the connected side is operated in response to a water supply request signal from the building 52 on the connected side. As a result, water is supplied to the connected building 52 without any trouble.

FIG. 13 is a block diagram showing an example of the control panel 64A of the water supply apparatus shown in FIG. In FIG.
71 to 73 are water level detecting means connected to the water level detecting electrode devices 65 to 67; 74 and 75 are abnormal display means for individually displaying abnormalities such as drought of the elevated water tanks 62 and 63 and abnormally high water;
Reference numeral 76 denotes a common alarm unit that emits an alarm sound when an abnormality such as a drought of the elevated water tanks 62 and 63 or an abnormal increase in the water level occurs. 81 is a signal determining means, the valve control means, the abnormality display means 7
4 and 75 and the output of the water level detecting means 72 and 73, the failure state is determined, and the electric main valve 55 is determined.
A, 56A and the electric connection valve 57A are controlled. 8
Numeral 2 denotes a signal processing unit which controls the pump driving units 79 and 80 in accordance with the output of the signal discriminating unit / valve control unit 81, and replaces the failure handling switches 77 and 78 in FIG. 79 and 80 are water level detecting means 72 and 73
Is a pump driving means for driving the water supply pumps 53 and 54 in accordance with the output of.

In this embodiment, in response to the input of a drought signal from each of the buildings 51 and 52, the electric main valves 55A and 55
6B and the third embodiment except that the electric connection valve 57A is automatically opened and closed. Here, the water supply pumps 53 and 54, the electric main valves 55A and 56A, and the electric connection valve 57 in the fourth embodiment are used.
The operation of A will be described with reference to the flowchart of FIG. In the following description, for convenience, the system of the water supply pump 53 is referred to as system 1, the system of the water supply pump 54 is referred to as system 2, the water supply pump 53 is a pump, the water supply pump 54 is a pump, and the electric main valve 55A is a valve. , Electric main valve 5
6A is referred to as a valve, and the electric connection valve 57A is referred to as a valve.

First, whether or not the system 1 is abnormal is determined by the presence or absence of a drought signal. If the system 1 is not abnormal, it is determined whether or not the system 2 is abnormal by the presence or absence of a drought signal. If the system 2 is not abnormal, it is determined whether a water supply request signal is generated in the system 1 and if the water supply request signal is generated, the pump is turned off.
N (operation), and if the water supply request signal has disappeared, the pump is turned off (operation stopped). Next, it is determined whether or not a water supply request signal is generated in the second system. If the water supply request signal is generated, the pump is turned on (operating). If the water supply request signal is extinguished, the pump is turned off. (Stop operation) and return to the beginning.

If the first system is abnormal, it is determined whether or not the pump is ON. If the first system is ON, the process proceeds to a determination step as to whether or not a water supply request signal is generated in the first system. If the pump has not been turned on, the valve is closed, the valve is opened, the pump is turned on, and it is determined whether or not a water supply request signal is generated in the first system. Repeat that step until disappears. When the water supply request signal of the first system disappears, the valve is opened, the valve is closed, the pump is turned off, and the process returns to the beginning.

If the system 2 is abnormal, the pump
It is determined whether it is N or not, and if it is ON, the process proceeds to a determination step of whether a water supply request signal is generated in the first system. If the pump is not ON, close the valve and open the valve,
The pump is turned on, it is determined whether or not a water supply request signal is generated in the second system, and the steps are repeated until the water supply request signal in the second system disappears. When the water supply request signal of the second system disappears, the valve is opened, the valve is closed, the pump is turned off, and the process returns to the beginning.

As a condition of the above operation, it is necessary that the water reduction signal is also output to the abnormal system. According to the above operation, when both the first system and the second system are normal, the pump and the pump operate to operate according to the water supply request signal, and supply water to the first and second system elevated water tanks.

For example, when the system 1 becomes abnormal,
Since the pump stops, water is supplied to the elevated water tank of the first system by the pump. While the pump is supplying water to the 2nd elevated water tank, the pump does not supply water to the 1st elevated water tank, and after the water supply to the 2nd elevated water tank is completed by the pump, the 1st Supply water to the elevated water tank. Then, when the water supply to the first system elevated water tank by the pump is completed, the pump is returned to be able to supply water to the second system elevated water tank.

When the system 2 becomes abnormal, the pump stops, and the pump supplies water to the system 2 elevated water tank. During the period when the pump is supplying water to the 1st elevated water tank, water is not supplied to the 2nd elevated water tank by the pump, and after the water supply to the 1st elevated water tank by the pump is completed, Supply water to the elevated water tank. Then, when the water supply to the second system elevated water tank by the pump is completed, the pump is returned so that the pump can supply water to the first system elevated water tank.

When one of the systems 1 and 2 becomes abnormal due to such an operation, the elevated water tank of the normal system is
The water level is controlled between the reduced water level and the full water level, and the elevation of the elevated water tank in the abnormal system is controlled between the drought level and the full water level. The width is larger than that of the normal system. According to the water supply apparatus of this embodiment, the motor-operated connection valve 57A coupled to the output of the water supply pump 53 corresponding to the building 51 that has output the drought signal in response to the input of the drought signal from each of the buildings 51 and 52 automatically operates. The feed water pump 54 on the connected side
Since the electric main valve 56A is automatically closed, the abnormal state can be automatically eliminated in the event of an abnormality, and the urgency of the measures taken by the repair staff can be eliminated.

When the water supply request signal from the building 51 that has output the drought signal is extinguished, the water pump 54 on the connected side is turned off.
The motor-operated main valve 56A provided at the output section automatically opens,
The electric connection valve 57A is automatically closed, and the water supply pump 54 on the connected side is operated in response to a water supply request signal from the building 52 on the connected side.
In addition to supplying water to the building, it is also possible to supply water to the building 52 on the connected side, so that stable water can be supplied even if repair is not performed for a long time.

[Fifth Embodiment] A fifth embodiment of the present invention will be described with reference to FIGS. This water supply device is provided with a holding means (not shown) for holding the abnormal mode in response to the occurrence of the drought signal, and during the period in which the holding means holds the abnormal mode, the valve control means is connected to the connected side by the valve control means. Main valve 56A provided at the output of water supply pump 54
A first operation of opening the connection valve 57A to output a signal to close the connection valve 57A and operating the water supply pump 54 on the connection side in response to a water supply request signal from the building 52 on the connection side; The water supply pump 54 on the connected side operates in response to a water supply request signal from the building 51 that outputs a signal to close the main valve 56A provided at the output portion of the water supply pump 54 and opens the connection valve 57A and outputs a drought signal. The second operation to be performed is selectively performed.

The above configuration and operation are realized by the control panel 64A of FIG. With this configuration, during the period in which the abnormal mode is maintained, the first operation and the second operation are selectively performed, and the water supply to the building that outputs the drought signal and the connection to the connected side are performed. Will be provided on an equal basis. Operations other than those described above are the same as in the fourth embodiment.

The operation of the water supply pumps 53 and 54, the electric main valves 55A and 56A, and the electric connection valve 57A in the fifth embodiment will now be described with reference to the flowchart of FIG. First, it is determined whether a reset operation has been performed. The reset operation is performed by manually operating a reset button after repairing a failed pump or the like and returning the system to a normal state.

If the reset operation has not been performed, it is determined whether or not the system 1 is abnormal. If the reset operation has been performed, the valve is opened, the valve is closed, and the abnormality of the system 1 and the system 2 is maintained. Is canceled, it is determined whether the system 1 is abnormal. If the first system is not abnormal, it is determined whether the second system is abnormal. If the system 2 is not abnormal, it is determined whether or not a water supply request signal is generated in the system 1. If the water supply request signal is generated, the pump is turned on (operated), and the water supply request signal has disappeared. If so, the pump is turned off (stop operation). Next, it is determined whether or not a water supply request signal is generated in the second system.
When the pump is turned on (operation) and the water supply request signal has disappeared, the pump is turned off (operation stopped) and the process returns to the beginning.

If the first system is abnormal, it is determined whether or not the pump is ON. If the first system is ON, the process proceeds to a determination step as to whether or not a water supply request signal is generated in the first system. If the pump is not turned on, the system 1 is maintained abnormally, and it is determined whether or not a water supply request signal is generated in the system 1. If the water supply request signal is generated, the valve is closed. , After opening the valve,
The pump is turned on, and the process returns to the determination step of the water supply request signal of the first system, and the state is repeated until the water supply request signal of the first system disappears.

When the water supply request signal of the first system disappears, the pump is turned off. Next, it is determined whether or not a water supply request signal is generated in the second system. If the second water supply request signal is generated, the valve is opened, the valve is closed, the pump is turned on, and the Returning to the step of determining the water supply request signal, the state is repeated until the water supply request signal of the second system disappears. When the water supply request signal of the second system disappears, the pump is turned off and the process returns to the beginning.

If the second system is abnormal, it is determined whether or not the pump is ON. If the second system is ON, the process proceeds to a determination step as to whether or not a water supply request signal is generated in the first system. If the pump is not ON, the abnormality of the system 2 is maintained, and it is determined whether or not a water supply request signal is generated in the system 2. If the water supply request signal is generated, the valve is closed. , After opening the valve,
The pump is turned on, the process returns to the determination step of the water supply request signal of the second system, and the state is repeated until the water supply request signal of the second system disappears.

When the water supply request signal of the second system disappears, the pump is turned off. Next, it is determined whether or not a water supply request signal is generated in the first system. If a water supply request signal is generated in the first system, the valve is opened, the valve is closed, the pump is turned on, and the Returning to the step of determining the water supply request signal, the state is repeated until the water supply request signal of the first system disappears. When the water supply request signal of the first system disappears, the pump is turned off and the process returns to the beginning.

As a condition of the above-mentioned operation, it is necessary that the water reduction signal is also output to the abnormal system. According to the above operation, when both the first system and the second system are normal, the pump and the pump operate to operate according to the water supply request signal, and supply water to the first and second system elevated water tanks.

Further, for example, when the system 1 becomes abnormal,
Since the pump stops, water is supplied to the elevated water tank of the first system by the pump. While the pump is supplying water to the 2nd elevated water tank, the pump does not supply water to the 1st elevated water tank, and after the water supply to the 2nd elevated water tank is completed by the pump, the 1st Supply water to the elevated water tank. When the water supply to the first system elevated water tank by the pump is completed, the water supply to the first system and second system elevated water tank by the pump is performed under the same conditions.

When the system 2 becomes abnormal, the pump stops, so that the pump supplies water to the system 2 elevated water tank. During the period when the pump is supplying water to the 1st elevated water tank, water is not supplied to the 2nd elevated water tank by the pump, and after the water supply to the 1st elevated water tank by the pump is completed, Supply water to the elevated water tank. When the water supply to the second system elevated water tank by the pump is completed, the pump supplies water to the first system and the second system elevated water tank under the same conditions.

When one of the systems 1 and 2 becomes abnormal due to such an operation, the elevated water tanks of the normal side and the abnormal side are both controlled between the reduced water level and the full water level. That is, the fluctuation range of the water level of the elevated water tank in the abnormal system is the same as that in the normal system. According to the water supply device of this embodiment, the water supply to the building 51 that outputs the drought signal and the water supply to the building 52 on the connected side are performed in an equal relationship, and the water supply to the building 51 that outputs the drought signal is performed. The water supply is also performed under the same conditions as the water supply to the connected building 52, and the building 51 that has output the drought signal is also supplied with water before the next drought state, that is, from the time of the reduced water state. And water can be supplied more stably.

[Sixth Embodiment] A sixth embodiment of the present invention will be described with reference to FIGS. This water supply apparatus controls the water supply pumps 53 and 54, the electric main valves 55A and 56A, and the electric connection valve 57A in the flowcharts of FIGS. 16 and 17 instead of the flowchart of FIG. In addition to the configuration, the first
When a water supply request signal from the building that has output the drought signal occurs during the execution of the operation, the second operation is preferentially executed, and after the second operation is completed, the first operation is restarted. When a water supply request signal is generated from the connected building during the execution of the operation (1), the first operation is preferentially executed, and the second operation is restarted after the end of the first operation.

[0086] In this water supply device, during the water supply to the building that has output the drought signal, the connected building becomes drought,
It is possible to reduce the possibility that a building that has output a drought signal while supplying water to the connected building will be in a drought state. Here, the operation of the water supply pumps 53 and 54, the electric main valves 55A and 56A, and the electric connection valve 57A in the sixth embodiment will be described with reference to the flowcharts of FIGS.

First, it is determined whether or not a reset operation has been performed. The reset operation is performed by manually operating a reset button after repairing a failed pump or the like and returning the system to a normal state. If the reset operation has not been performed, it is determined whether or not the system 1 is abnormal. If the reset operation has been performed, the valve is opened, the valve is closed, and the abnormality holding of the system 1 and the system 2 is released. rear,
It is determined whether the system 1 is abnormal. If the first system is not abnormal, it is determined whether the second system is abnormal. If the second system is not abnormal, it is determined whether the first system has a water supply request signal. If the second system has a water supply request signal, the pump is turned on.
(Operation), and if the water supply request signal has disappeared, the pump is turned off (operation stopped). Next, if the water supply request signal of the second system has been generated, the pump is turned on (operation). If the water supply request signal of the second system has disappeared, the pump is turned off (operation stopped), and the process returns to the beginning.

First, if the system 1 is abnormal, the pump
It is determined whether it is N or not, and if it is ON, the process proceeds to a determination step of whether a water supply request signal is generated in the first system. If the pump is not turned on, the system 1 is held abnormally, and it is determined whether or not a water supply request signal is generated in the system 1. Is closed, the valve is opened, the pump is turned on, and it is determined whether or not the water supply request signal is generated in the second system. If the water supply request signal is not generated in the second system, the water supply of the first system is performed. Returning to the determination step of the generation of the request signal, the state is repeated until the water supply request signal of the first system disappears.

On the other hand, if the water supply request signal of the second system is generated, the pump is turned off, the valve is opened, and the valve is closed without returning to the determination step of the generation of the water supply request signal of the first system. The pump is turned on, and it is determined whether a water supply request signal has been generated in the second system. If the second water supply request signal has been generated, the process returns to the determination step of the second water supply request signal and returns to step 2. The state is repeated until the water supply request signal of the system disappears. When the water supply request signal of the second system disappears, the pump is turned off, the process returns to the determination step of the generation of the water supply request signal of the first system, and the state is repeated until the water supply request signal of the first system disappears.

When the water supply request signal of the first system disappears, the pump is turned off, and it is determined whether the water supply request signal of the second system is generated. If the water supply request signal of the second system is generated, the valve is turned on. After opening and closing the valve, the pump is turned on. Further, it is determined whether or not a water supply request signal is generated in the first system. Returning to the signal generation determination step, the state is repeated until the water supply request signal for the second system disappears.

On the other hand, if the system 1 water supply request signal is generated, the pump is turned off, the valve is closed, and the valve is opened without returning to the step of determining the generation of the system 2 water supply request signal. The pump is turned on, and it is determined whether a water supply request signal is generated in the first system. If the first water supply request signal is generated, the process returns to the determination step of the first water supply request signal, and The state is repeated until the water supply request signal of the system disappears. When the water supply request signal of the first system disappears, the pump is turned off, and the process returns to the determination step of the generation of the water supply request signal of the second system, and the state is repeated until the water supply request signal of the second system disappears. When the water supply request signal for the second system disappears, the pump is turned off and the process returns to the beginning.

Next, if the second system is abnormal, it is determined whether or not the pump is ON. If the second system is ON, the flow proceeds to a determination step for determining whether or not a water supply request signal is generated in the first system. I do. If the pump is not ON, the abnormality of the second system is held, and it is determined whether or not the water supply request signal is generated in the second system. Is closed, the valve is opened, the pump is turned on, and it is determined whether a water supply request signal is generated in the first system. If the water supply request signal in the first system is not generated, the water supply in the second system is performed. Returning to the determination step of the generation of the request signal, the state is repeated until the water supply request signal of the second system disappears.

On the other hand, if the first system water supply request signal is generated, the pump is turned off, the valve is opened, and the valve is closed without returning to the step of determining the generation of the second system water supply request signal. The pump is turned on, and it is determined whether a water supply request signal is generated in the first system. If the first water supply request signal is generated, the process returns to the determination step of the first water supply request signal, and The state is repeated until the water supply request signal of the system disappears. When the water supply request signal of the first system disappears, the pump is turned off, and the process returns to the determination step of the generation of the water supply request signal of the second system, and the state is repeated until the water supply request signal of the second system disappears.

When the water supply request signal of the second system disappears, the pump is turned off, and it is determined whether the water supply request signal of the first system is generated. If the water supply request signal of the first system is generated, the valve is turned on. After the valve is closed and the valve is closed, the pump is turned on, and it is determined whether or not a water supply request signal is generated in the second system. Returning to the signal generation determination step, the state is repeated until the water supply request signal of the first system disappears.

On the other hand, when the water supply request signal of the second system is generated, the pump is turned off, the valve is closed, and the valve is opened without returning to the step of determining the generation of the water supply request signal of the first system. The pump is turned on, and it is determined whether a water supply request signal has been generated in the second system. If the second water supply request signal has been generated, the process returns to the determination step of the second water supply request signal and returns to step 2. The state is repeated until the water supply request signal of the system disappears. When the water supply request signal of the second system disappears, the pump is turned off, the process returns to the determination step of the generation of the water supply request signal of the first system, and the state is repeated until the water supply request signal of the first system disappears.

When the water supply request signal of the first system disappears, the pump is turned off and the process returns to the beginning. As a condition for the above operation, it is necessary that the water reduction signal is also output to the abnormal system. According to the above operation, when both the first system and the second system are normal, the pump and the pump operate to operate according to the water supply request signal, and supply water to the first and second system elevated water tanks.

For example, when the system 1 becomes abnormal,
Since the pump stops, water is supplied to the elevated water tank of the first system by the pump. While the pump is supplying water to the 2nd elevated water tank, the pump does not supply water to the 1st elevated water tank, and after the water supply to the 2nd elevated water tank is completed by the pump, the 1st Supply water to the elevated water tank. When the water supply to the first system elevated water tank by the pump is completed, the water supply to the first system and second system elevated water tank by the pump is performed under the same conditions. At this time, 1
When there is a water supply request from the second system during the water supply to the system, the water supply to the first system is interrupted and the water supply to the second system is resumed. 1 to the water supply to system 2
When there is a water supply request from the system, the water supply to the second system is interrupted to supply water to the first system, and after the completion of the first system water supply, the second system water supply is resumed.

When the system 2 becomes abnormal, the pump stops, and the pump supplies water to the system 2 elevated water tank. During the period when the pump is supplying water to the 1st elevated water tank, water is not supplied to the 2nd elevated water tank by the pump, and after the water supply to the 1st elevated water tank by the pump is completed, Supply water to the elevated water tank. When the water supply to the second system elevated water tank by the pump is completed, the pump supplies water to the first system and the second system elevated water tank under the same conditions. In this case, similarly, when there is a water supply request from the second system during the water supply to the first system, the water supply to the first system is interrupted and the water is supplied to the second system.
When the water supply to the system is restarted and the water supply is requested from the system 1 during the water supply to the system 2 as well, the water supply to the system 2 is interrupted and the water supply to the system 1 is performed, and the water supply to the system 1 is completed. After that, the water supply of the second system is restarted.

When one of the systems 1 and 2 becomes abnormal by such an operation, the elevated water tanks of the normal side and the abnormal side both have their water levels controlled between the reduced water level and the full water level. That is, the fluctuation range of the water level of the elevated water tank in the abnormal system is the same as that in the normal system. According to the water supply device of this embodiment, when the water supply request signal from the building 51 that outputs the drought signal during the execution of the first operation is generated, the second operation is performed.
Is performed with priority, and after the second operation is completed, the first operation is performed.
When the water supply request signal from the connected building 52 is generated during the execution of the second operation, the first operation is preferentially executed, and the second operation is performed after the first operation is completed. Since the operation is resumed, the connected building 52 becomes drought during the water supply to the building 51 that has output the drought signal, or the building 51 that has output the drought signal during the water supply to the connected building 52.
Can be less likely to be in a drought state, and the water can be supplied more stably.

In the configuration of the sixth embodiment, the priority is given to the water supply to the one where the water supply request signal is generated later. However, when the water supply request signals from a plurality of buildings overlap, the water supply request signal is generated. During this period, water may be alternately supplied to both buildings 51 and 52 for a predetermined time, for example, 1 minute to 10 minutes. With such a configuration, during a period in which the water supply request signals from the plurality of buildings overlap, the risk that one of the plurality of buildings becomes drought during the water supply to one of the plurality of buildings is further increased. Can be reduced. Of course, when one of them is full, it goes without saying that water is supplied only to the other.

[ Reference Example ] A water supply device serving as a reference for the description of the next embodiment will be described with reference to FIGS. This water supply device is shown in FIG.
And as shown in FIG. 19, a plurality of buildings (in Reference Example 2
It supplies water to the inside of 51 and 52. Valves 55 and 56 are provided on the branch side of the water distribution unit 57B to each of the buildings 51 and 52, and the water distribution unit is provided. A building 5 in which a plurality of water pumps 53, 54 (the same number or less than the number of buildings) for alternately pumping water is provided in 57B, and valves 55, 56 are opened.
A plurality of water supply pumps 53 and 54 are alternately operated (cyclically when three or more water supply pumps are used) in response to a water supply request signal from the first and second water supply request signals.

In this water supply device, the valve 55 or 56
In response to the water supply request signal from the building 51 or 52 having opened the water supply pumps 53 and 54, the water supply pumps 53 and 54 operate alternately to supply water. In this case, it is necessary to selectively open the corresponding valve 55 or 56 every time the water supply request signal is generated. The other points are the same as in the third embodiment, and the description is omitted.

According to the water supply device of this reference example , the valve 5
In response to a water supply request signal from a building 51 or 52 with 5 or 56 opened, a plurality of water supply pumps 53 and 54 can be operated alternately to supply water, for example, one water supply pump 53 fails. Sometimes, the remaining water supply pump 54 can continue to supply water to the plurality of buildings 51 and 52, and the supply of water to the plurality of buildings can be stably performed with a small number of water supply pumps.

[ Seventh Embodiment] A seventh embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 20, the water supply device includes valves 55, 5
6, an electric valve 55 that opens and closes in response to an electric signal
A and 56A are provided with valve control means (not shown) for outputting a signal for controlling the opening and closing of each of the electric valves 55A and 56A in response to a water supply request signal from each of the buildings 51 and 52.

In this water supply apparatus, in response to a water supply request signal from each of the buildings 51 and 52, a valve for supplying water to the buildings 51 and 52 that have generated the water supply request signal is automatically opened. Others are the same as the water supply device shown in FIG. 18 and FIG. According to the water supply device of this embodiment,
In response to the water supply request signal from each building, the valve for supplying water to the building that generated the water supply request signal automatically opens, so that abnormal conditions can be automatically canceled when abnormal, Measures can eliminate urgency.

In particular , in the configuration of the seventh embodiment,
A plurality of valves are controlled so as to cyclically open a plurality of valves at predetermined time intervals, for example, every 1 to 10 minutes, during a period in which water supply request signals from a plurality of buildings overlap. It is configured so as to open and close operation of the valve. With such a configuration, during a period in which water supply request signals from a plurality of buildings overlap, a plurality of valves are opened and closed so as to sequentially open a plurality of valves sequentially for a predetermined time. any buildings in the feedwater of the other to any one of the building can be reduced the risk of the drought state. Water supply requests from multiple buildings
Even if overlapping numbers occur, supply for one building
Using a small-capacity water supply pump that has only water-capable capacity
Water can be supplied to multiple buildings and therefore low
Meet simultaneous water demands from multiple buildings at equipment cost
be able to.

Further, the valve control means may be configured such that, when a drought signal is input, a valve for supplying water to the building that has output the drought signal is preferentially opened. With this configuration, when the drought signal is input, the valve that supplies water into the building that has output the drought signal opens preferentially, so that the building that has generated the drought signal can be prevented from being drought.

[0108]

According to the water supply apparatus of the first aspect, in addition to providing one water supply pump for each building, one auxiliary water supply pump is provided for all buildings, and the output section of the auxiliary water supply pump is provided. The water supply to each building can be stably performed with a small number of water supply pumps only by providing a valve that connects the output section of the water supply pump for each building. In addition, the auxiliary water supply pump and one water supply pump are always operated alternately, so that not only the water supply pump for each building but also the auxiliary water supply pump can always be kept in operation, resulting in rust and deterioration. Thus, the possibility that the auxiliary water supply pump malfunctions in the event of an abnormality can be reduced.

According to the water supply device of the present invention, one electric valve corresponding to the building that has output the drought signal in response to the input of the drought signal from each building is automatically opened to correspond to the remaining buildings. The remaining motorized valves close automatically,
In the event of an abnormality, the abnormal state can be automatically eliminated, and the urgency of the measures taken by the repair staff can be eliminated. According to the water supply device of the third aspect, it is possible to stably supply water to each building with only a small number of water supply pumps by providing the same number of water supply pumps as the number of buildings.

According to the fourth aspect of the present invention, the connecting valve connected to the output of the water supply pump corresponding to the building that has output the drought signal in response to the input of the drought signal from each building automatically opens. Since the main valve of the feed water pump on the connected side is automatically closed, the abnormal state can be automatically eliminated in the event of an abnormality, and the urgency of the measures taken by the repair staff can be eliminated.

According to the water supply device of the fifth aspect, when the water supply request signal from the building that has output the drought signal disappears, the main valve provided at the output of the water supply pump on the connected side is automatically opened to connect the water supply pump. The valve automatically closes, and the water supply pump on the connected side operates in response to the water supply request signal from the building on the connected side, so not only can water be supplied to the building that output the drought signal, but also on the connected side. Water can be supplied to the building, and stable water supply is possible even if the repair is not performed for a long time.

According to the water supply apparatus of the sixth aspect, the water supply to the building that has output the drought signal and the water supply to the building on the connected side are performed in an equal relationship, and the water supply to the building that has output the drought signal is performed. Will be performed under the same conditions as the water supply to the connected building, and the building that has output the drought signal will also supply water before the next drought condition, that is, from the time of the reduced water condition. It is possible to supply water more stably.

According to the water supply apparatus of the seventh aspect, when a water supply request signal from a building that has output a drought signal during execution of the first operation is generated, the second operation is executed with priority, and the second operation is executed. After the end of the operation, the first operation is restarted, and when a water supply request signal from the connected building is generated during the execution of the second operation, the first operation is preferentially executed, and the first operation is performed. Since the second operation is resumed after the completion of the operation, the connected building is in a drought state during the water supply to the building that has output the drought signal, or the drought signal is output during the water supply to the connected building. The risk of the building being in a drought state can be reduced, and the water can be supplied more stably. According to the water supply device according to claim 8, rest when in response to a water supply request signal can supply the water operates to sequentially cyclically is a plurality of water supply pumps, for example the one of the feedwater pumps failed The water supply pump can continue to supply water to a plurality of buildings, and the supply of water to a plurality of buildings can be stably performed with a small number of water supply pumps.

In addition, in response to a water supply request signal from each building , a power supply for supplying water to the building that has generated the water supply request signal.
Since the dynamic valve is automatically opened, an abnormal state can be automatically eliminated in the event of an abnormality, and the urgency of measures taken by the repair staff can be eliminated. Further, during a period in which water supply request signals from a plurality of buildings overlap, a plurality of electrically operated valves are opened and closed so that a plurality of electrically operated valves are sequentially and cyclically opened at predetermined time intervals. a plurality of any other building feedwater to any one of the building can be reduced the risk of the drought state. It is also necessary to supply water from multiple buildings.
Even if signal requests overlap, it may not be possible to
Use a small-capacity water supply pump with enough capacity to supply water
To supply water to multiple buildings
Simultaneous water demand from multiple buildings at low equipment cost
Can be obtained.

According to the water supply device of the ninth aspect , when the drought signal is input, the motor-operated valve for supplying water to the building that has output the drought signal opens preferentially. Drought can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a water supply device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a water supply device according to the first embodiment of the present invention.

FIG. 3 is a block diagram illustrating a configuration of a control panel.

FIG. 4 is a circuit diagram showing a configuration of a failure handling switch and a signal processing unit in a control panel.

FIG. 5 is a time chart illustrating the operation of each unit in FIG. 4;

FIG. 6 is a schematic diagram illustrating a configuration of a water supply device according to a second embodiment of the present invention.

FIG. 7 is a schematic diagram showing a configuration of a water supply device according to a second embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a control panel.

FIG. 9 is a schematic diagram showing a configuration of a water supply device according to a third embodiment of the present invention.

FIG. 10 is a schematic diagram showing a configuration of a water supply device according to a third embodiment of the present invention.

FIG. 11 is a block diagram showing a configuration of a control panel.

FIG. 12 is a schematic diagram showing a configuration of a water supply device according to a fourth embodiment of the present invention.

FIG. 13 is a block diagram showing a configuration of a control panel.

FIG. 14 is a flowchart showing a state of control of a water supply pump and a valve.

FIG. 15 is a flowchart showing how a water supply pump and a valve are controlled in a water supply device according to a fifth embodiment of the present invention.

FIG. 16 is a flowchart showing how a water supply pump and a valve are controlled in a water supply device according to a sixth embodiment of the present invention.

FIG. 17 is a flowchart showing how a water supply pump and a valve are controlled in a water supply device according to a sixth embodiment of the present invention.

FIG. 18 is a schematic diagram illustrating a configuration of a water supply device of a reference example .

FIG. 19 is a schematic diagram showing a configuration of a water supply device of a reference example .

FIG. 20 is a schematic diagram showing a configuration of a water supply device according to a seventh embodiment of the present invention.

[Explanation of symbols]

 1-3 Building 4-6 Water pump 7 Auxiliary water pump 8-10 Valve 12 Water tank 16-18 Elevated water tank

Claims (9)

(57) [Claims] 1. A water supply apparatus for supplying water to a plurality of buildings, wherein a water supply pump which operates in response to a water supply request signal from each building and supplies water to the buildings is provided for each of the buildings. An auxiliary water supply pump is provided separately from the water supply pump for each building, and an output of the auxiliary water supply pump is connected to an output of the water supply pump for each building via a valve, and optionally selected as the auxiliary water supply pump. And a pump control means which alternately operates in response to a water supply request signal from the selected one building in combination with a water supply pump corresponding to the selected one building. 2. An electric valve which opens and closes each valve in response to an electric signal, and a valve control means for opening and closing this electric valve is provided, which always corresponds to one building selected by said valve control means. One electric valve is opened and a signal for closing the remaining electric valves is output so that the output part of the auxiliary water supply pump communicates with the output part of the supplied water supply pump, and the auxiliary water supply pump and the selected one are output by pump control means. And a water supply pump corresponding to one of the buildings is operated alternately in response to a water supply request signal from the selected building, and the valve control is performed in response to a drought signal input from each building. Means for opening one electric valve corresponding to the building that has output the drought signal from the means and outputting a signal for closing the remaining electric valves corresponding to the remaining buildings, The water supply apparatus according to claim 1, wherein the pump is operated independently in response to a water supply request signal from a building that has output a drought signal. 3. A water supply device for supplying water to a plurality of buildings, wherein a water supply pump for operating in response to a water supply request signal from each building and supplying water to the buildings is provided for each of the buildings. A main valve is provided at an output part of the water supply pump that supplies water into the building, and the output part of the water supply pump is connected to the output part of another water supply pump via a connection valve on the water supply pump side of the main valve. A water supply device characterized by being combined. 4. An electric valve which opens and closes a main valve and a connection valve in response to an electric signal, and valve control means for driving the main valve and the connection valve to open and close is provided, and the main valve is normally opened by the valve control means. And outputs a signal to close the connection valve, operates a water supply pump corresponding to each building in response to a water supply request signal from each building, and opens and closes the connection valve in response to the input of a drought signal in the building. A signal that closes a main valve provided at an output portion of the connection-side water supply pump is output, and the connection-side water supply pump is operated in response to a water supply request signal from a building that outputs a drought signal. The water supply device according to claim 3, wherein 5. A signal in response to the disappearance of a water supply request signal from a building that has output a drought signal, a valve control means for opening a main valve provided at an output part of the water supply pump on the connected side and closing a connection valve. 5. The water supply device according to claim 4, wherein the water supply pump is output in response to a water supply request signal from the building on the connected side. 6. A holding means for holding an abnormal mode in response to the occurrence of a drought signal, and during a period in which the holding means holds the abnormal mode, a valve control means controls the water supply pump on the connected side. A first operation of opening a main valve provided in an output unit and outputting a signal for closing a connection valve and operating the water supply pump on the connection side in response to a water supply request signal from the building on the connection side; In response to a water supply request signal from a building that outputs a signal to open a connection valve and outputs the drought signal by closing a main valve provided at an output portion of the water supply pump on the connection side by valve control means, The water supply device according to claim 4, wherein the second operation for operating the water supply pump on the side is selectively performed. 7. A water supply pump on the connected side provided by a valve control means during a period in which the holding means holds the abnormal mode in response to generation of a drought signal. A first operation of opening a main valve provided in an output unit and outputting a signal for closing a connection valve and operating the water supply pump on the connection side in response to a water supply request signal from the building on the connection side; In response to a water supply request signal from a building that outputs a signal to open a connection valve and outputs the drought signal by closing a main valve provided at an output portion of the water supply pump on the connection side by valve control means, And the second operation for operating the water supply pump on the side is selectively performed, and when a water supply request signal from the building that outputs the drought signal is generated during execution of the first operation, the second operation is performed. of The operation is executed with priority and the second
After the completion of the operation, the first operation is resumed, and when a water supply request signal from the connected building is generated during the execution of the second operation, the first operation is preferentially executed. 5. The method according to claim 4, wherein the second operation is restarted after the first operation is completed.
Water supply device as described. 8. A water supply device for supplying water to a plurality of buildings, wherein a water distribution unit to each of the buildings responds to an electric signal.
Provided with an electric valve which is opened and closed from each building
Opening and closing control of each electric valve in response to a water supply request signal of
The valve control means for outputting a signal for providing said a plurality of feedwater pump for cyclically operating to pump water to the water distribution unit is provided, the plurality of the water supply pump in response to the previous SL water supply request signal Operation is controlled cyclically
A water supply device, wherein the valve control means comprises:
During the period when the water supply request signal from the building overlaps
Is to cycle multiple electric valves sequentially for a predetermined time
Open and close the plurality of electric valves so that
A water supply device characterized in that it is configured as follows. 9. A drought signal is input to the valve control means.
Supply water to the building that output the drought signal
9. The electric valve according to claim 8, wherein the electric valve is opened preferentially.
Water supply apparatus.