JP2005061115A - Water-distribution support system of water-distribution facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease a power consumption in the case of a water-distribution operation in a time zone such as night-time when the demand for water-distribution is small, avoid the complete suspension of water supply even in the case of a service interruption by rationally remodelling a water distribution system by using the water-receiving excess water pressure of cleaned water supplied to a water distribution reservoir by a water supply pipe, and to reduce the cost of a backup facility to an emergency and miniaturize the backup facility. <P>SOLUTION: A bypass pipe 11 directly supplying cleaned water in the water supply pipe 3 to a water distribution pipe 6 connects the water supply pipe 3 supplying the reservoir 2 with cleaned water with a pipe section positioned on the downstream side of a distribution pump 7 in a water distribution pipe 6 supplying a consumer with cleaned water in the reservoir 2 by the pump 7. The water distribution support system of water distribution facilities comprises a supply changeover means A provided on the bypass pipe 11 for changing over supply of cleaned water in the water supply pipe 3 and a back-flow preventive means B preventing the back flow of cleaned water to the water-supply pipe 3 side through the bypass pipe 11 from the water-distribution pipe 6 side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement of a water distribution facility that stores purified water supplied from a high district water reservoir, a water purification facility, or the like in a water distribution reservoir and distributes the stored purified water to consumers.

  In conventional water distribution facilities, flowmeters and flow control valves for controlling the amount of water stored in the distribution reservoirs are intervened in the water pipes that supply purified water from high district reservoirs and water purification facilities to the distribution reservoirs. On the downstream side of the reservoir, there are a natural flow system that distributes water to consumers using the height difference, and a pressurized system that distributes water to consumers by pressurizing with a distribution pump. The pressure distribution valve system was equipped with a pressure control valve, a flow meter, and the like for controlling the amount of water distribution.

In conventional distribution facilities, the residual water pressure of the purified water at the receiving point is released to the atmosphere in the distribution reservoir, so the distribution pump with the pumping capacity for the entire head is driven to bring the stored clean water in the distribution reservoir to the set water pressure. In addition, it is necessary to continue to drive the water distribution pump even in a time zone where the demand for water distribution is small, such as at night, which has led to an increase in power consumption.
In particular, in recent years, houses have been built adjacent to water distribution facilities, so there are complaints about noise caused by driving the water distribution pumps at night and the current situation is that they are struggling with noise countermeasures. .

  In addition, when troubles such as power outages, on-site electrical accidents, water pump failures, etc. occur, it may become impossible to distribute water to consumers. As a result, a backup facility for the emergency situation was required, leading to an increase in the size of the facility and an increase in the initial cost.

  Furthermore, in recent years, the water utility has a national policy of managing water tanks, etc., which are scattered in many municipalities. Therefore, as one of the countermeasures, the water supply pressure is applied to some water distribution areas due to the ground height in the water distribution area. In order to secure it, it will be necessary to add a new distribution pump facility, but in order to secure the new expansion, it will be necessary to install a distribution pump facility with a pumping capacity for the entire head. There was a problem that power consumption increased.

  The present invention has been made in view of the above-mentioned actual situation, and the main problem is that it is rationally modified by using the surplus water pressure of the purified water supplied to the reservoir through the water pipe, such as at night. In addition to reducing power consumption during water distribution operations during times when demand for water distribution is low, it is possible to avoid complete water interruptions even in the event of a power outage, and to reduce the cost and size of backup equipment for emergencies. It is to provide a water distribution support system for useful water distribution facilities.

  1st characteristic structure by the water distribution assistance system of the water distribution facility of this invention is a downstream of a water distribution pump among the water pipe which supplies purified water to a water distribution reservoir, and the water distribution pipe which supplies the water of a distribution reservoir to a consumer with a water distribution pump. A bypass pipe that supplies the purified water from the water pipe directly to the water distribution pipe without passing through the reservoir is connected to the pipe located on the side, and the supply switching is performed to switch the supply of the purified water from the water pipe to this bypass pipe. And a backflow prevention means for preventing the backflow of purified water from the water distribution pipe side through the bypass pipe to the water supply pipe side.

  According to the above characteristic configuration, for example, when trouble such as a power failure, an electric accident in the field, or a failure of the water distribution pump occurs and water distribution by the water distribution pump becomes impossible, the purified water in the water pipe is supplied by the supply switching means. By supplying directly to the pipes downstream of the water distribution pump in the distribution pipe through the bypass pipe without passing through the distribution reservoir, it is possible to distribute water to each consumer with the surplus water pressure received, but the supply pressure is reduced but completely Water outage can be avoided.

  In addition, even during periods of low demand for water distribution such as at night, the supply switching means supplies the purified water in the water pipe directly to the downstream pipe portion of the water distribution pipe through the bypass pipe without passing through the reservoir. As a result, water can be distributed to each consumer at the received surplus water pressure, so that the water distribution pump can be stopped during this period, and power consumption and noise can be reduced.

  Furthermore, in the operation mode in which the water distribution pump is driven to distribute water to each consumer, it is possible to reliably prevent a part of the purified water discharged from the water distribution pump from flowing backward to the water pipe side through the bypass pipe. it can.

  Therefore, by modifying the rational piping system using the excess water pressure of the purified water supplied to the reservoir through the water pipe, the power consumption during the water distribution operation in the time zone where the water distribution demand is small such as at night is reduced. In addition to being able to avoid complete water interruption even during a power outage, the generation of turbid water due to water interruption can be suppressed, and the cost of backup equipment for emergency situations such as emergency private power generation facilities and emergency water distribution pumps can be reduced. Miniaturization can be achieved.

  The 2nd characteristic structure by the water distribution assistance system of the water distribution facility of this invention is upstream of a water distribution pump among the water pipe which supplies purified water to a water distribution reservoir, and the water distribution pipe which supplies the water of a distribution reservoir to a consumer with a water distribution pump. A bypass pipe that supplies the purified water from the water pipe directly to the water distribution pipe without passing through the reservoir is connected to the pipe located on the side, and the supply switching is performed to switch the supply of the purified water from the water pipe to this bypass pipe. And a backflow prevention means for preventing the backflow of purified water from the water distribution pipe side through the bypass pipe to the water supply pipe side.

  According to the above characteristic configuration, the water supply surplus water pressure is reduced by supplying the purified water in the water pipe directly through the bypass pipe to the upstream pipe section of the water distribution pump in the water distribution pipe by the supply switching means. Since it can be used as the primary side (suction side) pressure of the water distribution pump, the pump capacity may be a head obtained by subtracting the received surplus water pressure from the total head.

  In addition, when the water distribution pump is stopped, although the resistance of the water distribution pump is slightly increased, a flow path for supplying purified water from the water supply pipe to the water distribution pipe is secured. Even if trouble such as an accident or a water pump failure occurs, water supply by the water pump becomes impossible, so the purified water in the water pipe can be distributed to each consumer at the surplus water pressure. Although it drops, complete water shutoff can be avoided.

  In addition, when the demand for water distribution is low, such as at night, the water distribution pump is stopped and the supply switching means allows the purified water in the water pipe to pass through the bypass pipe and bypass the distribution pipe. In addition, by supplying directly to the upstream pipe section, it is possible to distribute the purified water in the water transmission pipe to each consumer at the received surplus water pressure, so that it is possible to reduce power consumption and noise.

  Furthermore, in the event that water supply is not possible on the water pipe side, the water stored in the distribution basin is distributed with a water distribution pump while preventing back flow to the water pipe side by means of backflow prevention means provided on the bypass pipe. It can be pressurized and distributed to consumers.

  Therefore, by modifying the rational piping system using the excess water pressure of the purified water supplied to the reservoir through the water pipe, the power consumption during the water distribution operation in the time zone where the water distribution demand is small such as at night is reduced. In addition to being able to avoid complete water interruption even during a power outage, the generation of turbid water due to water interruption can be suppressed, and the cost of backup equipment for emergency situations such as emergency private power generation facilities and emergency water distribution pumps can be reduced. The size can be reduced, and even when the expansion of the direct water supply system is promoted, the initial cost of the water distribution pump equipment can be reduced and the power consumption can be reduced.

  A third characteristic configuration of the water distribution support system of the water distribution facility according to the present invention includes a water distribution pipe that supplies purified water to the distribution reservoir, and a water distribution pipe that supplies the purified water of the distribution reservoir to consumers with a distribution pump. A bypass pipe that directly supplies the purified water from the water pipe to the distribution pipe is connected, and supply switching means for switching the supply of the purified water from the water pipe to this bypass pipe, and from the distribution pipe side to the water pipe side through the bypass pipe The reverse flow prevention means for preventing the reverse flow of the purified water is provided, and the booster pump for boosting the purified water is provided in the bypass pipe.

  According to the above characteristic configuration, the supply switching means switches the purified water in the water transmission pipe to a state where it is directly supplied to the water distribution pipe through the bypass pipe without passing through the distribution reservoir, and drives the booster pump provided in the bypass pipe, By boosting the purified water to the set water pressure, it is possible not only to reliably distribute water to each consumer in the distribution area, but also to use the water surplus water pressure as the primary side (suction side) pressure of the booster pump. Therefore, the power consumption of the pump can be reduced.

  Moreover, when the booster pump is stopped, although the resistance at the booster pump is slightly increased, a flow path for supplying purified water from the water supply pipe to the water distribution pipe is secured. Even when trouble such as an accident, water pump or booster pump failure occurs and water distribution by the water pump or booster pump becomes impossible, it is possible to distribute the purified water in the water pipe to each consumer at the surplus water pressure received. Therefore, although the supply pressure is reduced, complete water shutoff can be avoided.

  In addition, during times of low demand for water distribution such as at night, the supply switching means switches the purified water in the water pipe to a state where it is directly supplied to the water pipe through the bypass pipe without passing through the water reservoir, and the booster pump is driven. By stopping the operation, it is possible to distribute the purified water in the water pipe to each consumer at the received water surplus water pressure, so that it is possible to reduce power consumption and noise.

  Furthermore, in the event that water supply is impossible on the water pipe side, by driving the water distribution pump on the water pipe side, the reverse flow blocking means provided on the bypass pipe prevents the reverse flow to the purified water pipe side. The purified water stored in the reservoir can be pressurized with a distribution pump and distributed to consumers.

  Therefore, it is possible to reduce power consumption during normal water distribution operation by using a booster pump by rationally remodeling the piping system using the surplus water pressure of the purified water supplied to the distribution reservoir through the water pipe. It is also possible to reduce the power consumption during the water distribution operation in the time zone where the water distribution demand is small such as at night. In addition, it is possible to avoid complete water interruption even during a power outage and to suppress the generation of muddy water due to water interruption, and to reduce the cost and size of backup equipment for emergency situations such as emergency private power generation facilities and emergency water distribution pumps. In addition, even when the expansion of the direct water supply system is promoted, the initial cost of the water distribution pump facility can be reduced and the power consumption can be reduced.

  The 4th characteristic structure by the water distribution assistance system of the water distribution facility of this invention exists in the point to which the upstream pipe part of the said bypass pipe is connected between the flowmeter and flow control valve in a water pipe.

  According to the above characteristic configuration, the amount of water supplied to the distribution reservoir and the amount of water supplied to the bypass pipe can be measured with a single flow meter, so that the pipe configuration can be simplified and the cost can be reduced. .

  According to a fifth characteristic configuration of the water distribution support system for a water distribution facility according to the present invention, the supply switching unit switches the supply of purified water by a differential pressure between a water receiving primary side pressure in the water pipe and a water distribution pump secondary side pressure. It is in the point which is comprised.

  According to the above characteristic configuration, when the water distribution pump is driven, the pump secondary side pressure becomes higher than the water receiving primary side pressure in the water pipe, and the purified water is fed by the backflow prevention means provided in the bypass pipe. At the same time as the reverse flow to the water pipe side is blocked, the supply of purified water on the water pipe side to the water distribution pipe side is automatically blocked.

  In addition, when the water distribution pump is stopped, the pump secondary pressure is lower than the primary water pressure at the water pipe, and the purified water on the water pipe is automatically supplied to the water pipe at the surplus water pressure. Is done.

  Therefore, it is possible to automatically switch the supply of purified water on the water pipe side to the bypass pipe using the pressure difference associated with the driving and stopping of the water distribution pump. Even when the booster pump is unexpectedly stopped, it is possible to distribute the purified water in the water pipe to each customer at the surplus water pressure without requiring any special operation.

  The 6th characteristic structure by the water distribution assistance system of the water distribution facility of this invention exists in the point to which the downstream pipe part of the said bypass pipe is connected between the water distribution pump and pressure control valve in a water distribution pipe.

  According to the above characteristic configuration, by connecting the downstream pipe portion of the bypass pipe between the water distribution pump and the pressure control valve, where the pump secondary side pressure is most easily maintained at the set pressure, It is possible to ensure the switching of purified water supply.

  7th characteristic structure by the water distribution assistance system of the water distribution facility of this invention exists in the point to which the downstream pipe part of the said bypass pipe is connected to the secondary side of the pressure control valve in a water distribution pipe.

  According to the above characteristic configuration, the pump secondary pressure becomes slightly unstable compared to the case where the downstream pipe portion of the bypass pipe is connected between the water distribution pump and the pressure control valve, and the water supply pipe to the bypass pipe Although there is a possibility that the reliability of the supply water supply switching will be slightly reduced, it is not affected by the setting of the pressure control valve at the time of a power failure, and the water in the water pipe is received by the surplus water pressure received by each consumer. It is possible to distribute water reliably.

  According to an eighth characteristic configuration of the water distribution support system for a water distribution facility of the present invention, a flexible pipe joint that can be bent or a telescopic pipe joint that can be stretched or a flexible telescopic pipe joint that can be bent and stretched is provided in a part of the bypass pipe. It is in the point provided.

  According to the above characteristic configuration, the external force that acts on the bypass pipe due to an earthquake, uneven settlement, etc. is absorbed as much as possible by the flexible pipe joint, the expansion pipe joint, or the flexible expansion pipe joint, and the water is supplied on the bypass pipe side. By suppressing the occurrence of an impossible situation, it is possible to avoid the occurrence of complete water stoppage.

  The ninth characteristic configuration of the water distribution support system of the water distribution facility according to the present invention is the upstream of the water distribution pump among the water supply pipe that supplies the purified water to the distribution reservoir and the water distribution pipe that supplies the purified water of the distribution reservoir to the consumer by the water distribution pump. A first bypass pipe that supplies the purified water from the water pipe directly to the water distribution pipe without passing through the reservoir is connected to the pipe located on the side, and the purified water from the water pipe is supplied to the first bypass pipe. Supply switching means for switching is provided, and an opening / closing valve is provided in each upstream pipe portion of the first bypass pipe and the distribution pipe with respect to the downstream pipe portion of the first bypass pipe, and the water supply pipe And a second bypass pipe for supplying the purified water of the water pipe directly to the water distribution pipe without passing through the water reservoir, over the pipe section downstream of the water distribution pump in the water distribution pipe. Supply switching of purified water in the water pipe And switching means, in that the reverse current blocking means for preventing the backflow of clean water to the water supply pipe side through the second bypass pipe from the water pipe side.

  According to the above characteristic configuration, the supply switching means switches the purified water in the water pipe to a state where the purified water in the water pipe is directly supplied to the upstream pipe section from the water distribution pump through the first bypass pipe without passing through the water reservoir. Open and close the open / close valve provided in the bypass pipe and close the open / close valve provided in the pipe section upstream of the connection position with the downstream pipe section of the first bypass pipe in the water distribution pipe. Thus, the received water surplus water pressure can be used as the primary pressure (suction side) pressure of the water distribution pump. Therefore, the pump capacity can be a lift obtained by subtracting the received water surplus water pressure from the total head.

  In addition, when troubles such as power outages, electrical accidents at the site, water pump failure, etc. occur and water distribution by the water distribution pump becomes impossible, the water supply pipe will clean the water in the water pipe without going through the water distribution reservoir. 2 The state is switched to a state in which the pipe is directly supplied to the downstream pipe section of the water distribution pump through the bypass pipe, the open / close valve provided in the first bypass pipe is closed, and the downstream of the first bypass pipe in the water distribution pipe By switching the open / close valve provided in the upstream pipe section from the connection position with the side pipe section to the closed state, it is possible to distribute water to each consumer with the received water surplus water pressure. Water outage can be avoided.

  Furthermore, even in the time zone where the demand for water distribution is small, such as at night, the purified water in the water pipe can be passed directly through the second bypass pipe to the downstream pipe rather than the water distribution pump through the second bypass pipe without passing through the water reservoir. In addition to switching to the supply state, the on-off valve provided in the first bypass pipe is closed, and is provided in the upstream pipe section relative to the connection position with the downstream pipe section of the first bypass pipe in the water distribution pipe. By switching the open / close valve to the closed state, it is possible to distribute the purified water in the water pipe to each consumer at the received water surplus water pressure, thereby reducing power consumption and noise.

  Furthermore, when a situation in which water supply is impossible occurs on the water pipe side, an on-off valve provided on the first bypass pipe and a backflow prevention means provided on the second bypass pipe by driving the water distribution pump on the water pipe side. Thus, the purified water stored in the distribution reservoir can be pressurized with a distribution pump and distributed to consumers while preventing the reverse flow of the purified water to the water pipe.

  Therefore, by modifying the rational piping system using the excess water pressure of the purified water supplied to the reservoir through the water pipe, the power consumption during the water distribution operation in the time zone where the water distribution demand is small such as at night is reduced. In addition to being able to avoid complete water interruption even during a power outage, the generation of turbid water due to water interruption can be suppressed, and the cost of backup equipment for emergency situations such as emergency private power generation facilities and emergency water distribution pumps can be reduced. The size can be reduced, and even when the expansion of the direct water supply system is promoted, the initial cost of the water distribution pump equipment can be reduced and the power consumption can be reduced.

  According to a tenth feature configuration of the water distribution support system of the water distribution facility of the present invention, the upstream pipe portion of the first bypass pipe and the upstream pipe portion of the second bypass pipe are between the flowmeter and the flow control valve in the water supply pipe. It is in a connected point.

  Since the amount of water supplied to the distribution reservoir and the amount of water supplied to both bypass pipes can be measured with a single flow meter, simplification of the pipeline configuration and cost reduction can be achieved.

  The eleventh characteristic configuration of the water distribution support system of the water distribution facility according to the present invention is that a booster pump for boosting purified water is connected in parallel with the water distribution pump.

  According to the above characteristic configuration, the supply switching means switches the purified water in the water pipe to a state where the purified water in the water pipe is directly supplied to the upstream pipe section from the water distribution pump through the first bypass pipe without passing through the water reservoir. Open and close the open / close valve provided in the bypass pipe and close the open / close valve provided in the upstream pipe section from the connection position with the downstream pipe section of the first bypass pipe in the water distribution pipe, Furthermore, by driving a booster pump for boosting the purified water connected in parallel with the water distribution pump, the purified water sent from the water pipe through the first bypass pipe is boosted to the set water pressure, so that each consumer in the water distribution area In addition to being able to distribute water reliably, it is possible to use the received surplus water pressure as the primary side (suction side) pressure of the booster pump, thus reducing the power consumption of the pump. Can.

  According to a twelfth feature configuration of the water distribution support system for a water distribution facility of the present invention, a flexible flexible pipe joint or a telescopic telescopic pipe joint or a flexible and telescopic pipe joint is formed on a part of the first bypass pipe or the second bypass pipe. The flexible expansion pipe joint is provided.

  External forces acting on both bypass pipes due to earthquakes, unsettled subsidence, etc. are absorbed as much as possible by flexible pipe joints, expansion pipe joints or flexible expansion pipe joints, and there is a situation where water cannot be supplied to both bypass pipes. By suppressing this, the occurrence of complete water breakage can be avoided.

[First Embodiment]
In the water distribution facility shown in FIG. 1, in order to control the amount of water stored in the reservoir 2 to the water pipe 3 that supplies the purified water supplied from the high district reservoir or the water purification facility to the reservoir 2 through the landing well 1. A flow meter 4 and a flow control valve 5 are installed on the downstream side of the distribution reservoir 2, and a natural flow system 6A that distributes water to consumers using the height difference, and a water distribution system. A distribution pipe 6 consisting of a pressurized distribution pipe system 6B that pressurizes with a pump 7 and distributes water to consumers is connected to the pressurized distribution pipe system 6B. A valve 8 and a flow meter 9 are interposed.

  In addition, based on various measurement data and demand information from each of the flow meters 4 and 9 and the water level meter that measures the water level of the reservoir 2, the flow control valve 5, the pressure control valve 8, and the backup connection are connected in parallel. A control device 10 is provided for controlling the three water distribution pumps 7 and the like.

  And in order to comprise the water distribution assistance system of the water distribution facility of this invention, the water supply pipe part located between the flowmeter 4 and the flow control valve 5 in the water supply pipe 3, and the water distribution pipe on the pressurization system side of the water distribution pipe 6 The purified water of the water supply pipe 3 is passed through the water distribution pipe 6 without passing through the water distribution reservoir 2 over the water distribution pipe section located between the downstream side (secondary side) of the water distribution pump 7 and the pressure regulating valve 8 in the channel system 6B. A bypass pipe 11 that is directly supplied to the water distribution pipe system 6B on the pressurization method side is connected, supply switching means A that switches supply of purified water from the water supply pipe 3 to the bypass pipe 11, and pressurization of the water distribution pipe 6 A reverse flow blocking means B is provided for blocking the reverse flow of purified water from the distribution side pipe line system 6B side of the system side to the water supply pipe 3 side through the bypass pipe 11, and the upstream side pipe part and the downstream side pipe part of the bypass pipe 11 Each of the two, along the part spherical fitting surface in two places in the tube axis direction Bends freely and retractable flexible expansion joints 12 are provided within a range of pipe axis direction.

  A T-shaped pipe joint 13 and an opening / closing valve 14 attached to the branch pipe portion of the T-shaped pipe joint 13 and the branch pipe portion thereof are provided by a continuous water construction method at the connection portion of the water supply pipe 3 with respect to the bypass pipe 11. The flexible telescopic pipe joint 12 is disposed between the pipe and the side pipe portion, and a T-shaped pipe is provided at a bypass pipe connection location in the water distribution pipe system 6B on the pressure system side of the water distribution pipe 6. A joint 15 and an opening / closing valve 16 attached to the junction pipe portion thereof are provided by a continuous water method, and the flexible expansion pipe joint 12 is disposed between the opening / closing valve 16 and the downstream pipe portion of the bypass pipe 11. Has been.

  The backflow prevention means B is composed of a check valve 17A interposed in the middle of the bypass pipe 11, and on the secondary side of each water distribution pump 7, when the water distribution pump 7 is stopped driving, A check valve 17B is provided to prevent purified water supplied from the water pipe 3 through the bypass pipe 11 from flowing back to the upstream side of the water distribution pipe system 6B through the water distribution pump 7.

  The supply switching means A includes a check valve 17A of the backflow prevention means B, a water distribution pump 7 and a check valve 17B interposed on the secondary side thereof, and the primary pressure and water distribution in the water supply pipe 3 Purified water is automatically supplied and switched by a differential pressure with the secondary side pressure of the pump 7.

  That is, when the water distribution pump 7 is driven, the secondary side pressure of the water distribution pump 7 is higher than the water reception primary side pressure in the water supply pipe 3, and therefore the high pressure side discharged from the water distribution pump 7. A part of the purified water is filled up to the place where the check valve 17A of the bypass passage 11 is interposed, and the flow of the low-pressure side purified water from the water pipe 3 side is blocked at the place where the check valve 17A is provided.

  Further, when the water distribution pump 7 is stopped, the secondary pressure of the water distribution pump 7 is lower than the water reception primary pressure in the water supply pipe 3, so that the purified water on the water supply pipe 3 side receives the water surplus water pressure. Thus, the water is automatically supplied to the secondary side of the water distribution pump 7 in the water distribution system 6B through the check valve 17A of the bypass pipe 11.

  Further, on-off valves 14 and 16 are interposed on the upstream side and downstream side of the bypass pipe 11, and the water purification pipe 3 is selectively purified with respect to the bypass pipe 11 by opening and closing the on-off valves 14 and 16. Although it is possible to configure the supply switching means A for switching the supply, in the present embodiment, the on-off valves 14 and 16 are normally maintained in an open state, and the bypass pipe 11 and the like need to be repaired. At this time, the on-off valves 14 and 16 are configured to be closed.

  And when the water distribution pump 7 is driven, since the secondary side pressure of the water distribution pump 7 is higher than the water reception primary side pressure in the water pipe 3, the purified water pumped by the water pipe 3 is bypassed. Even if it flows into the pipe 11, it is up to the intervening place of the check valve 17 </ b> A, and the purified water pumped by the water supply pipe 3 is supplied to the landing well 1 through the flow meter 4 and the flow control valve 5. The purified water supplied to the receiving well 1 is supplied to the distributing reservoir 2 in an overflow form, and the purified water stored in the distributing reservoir 2 is distributed through the distribution pipe 6A of the natural flow system and the pressurized distribution system. Water is distributed to each consumer group via the water pipeline system 6B.

  In addition, when troubles such as a power outage, an electric accident in the field, or a failure of the water distribution pump 7 occur and water distribution by the water distribution pump 7 becomes impossible, the secondary pressure of the water distribution pump 7 is reduced by stopping the operation of the water distribution pump 7. Since the pressure on the primary side of the water receiving pipe 3 is lower than that of the water receiving pipe 3, the purified water in the water feeding pipe 3 is distributed through the bypass pipe 11 without passing through the landing well 1 and the distributing reservoir 2 and distributed in the pressurized distribution pipe system 6B. Since it automatically switches to a state where it is directly supplied to the downstream pipe section from the pump 7 and water can be distributed to each consumer by the water surplus water pressure on the water supply pipe 3 side, although the supply pressure decreases, It can be avoided and the occurrence of muddy water due to water outage is also reduced.

  Furthermore, in a time zone where the demand for water distribution is small, such as at night, the secondary pressure of the water distribution pump 7 is lower than the water pressure primary side pressure in the water supply pipe 3 by stopping the drive of the water distribution pump 7. The water supply pipe 3 is automatically supplied with the purified water directly through the bypass pipe 11 to the downstream pipe section rather than the distribution pump 7 in the pressurized distribution pipe system 6B without passing through the landing well 1 and the distribution reservoir 2. Therefore, it is possible to distribute water to each consumer with the surplus water pressure received on the water pipe 3 side, so that it is possible to reduce power consumption and noise.

  In the first embodiment described above, the downstream side pipe portion of the bypass pipe 11 is connected to the downstream side (secondary side) of the water distribution pump 7 and the pressure control valve 8 in the pressurized side water distribution line system 6B of the water distribution pipe 6. Although it connected to the water distribution pipe part located between, the downstream pipe part of the bypass pipe 11 is connected to the water distribution pipe part located between the pressure control valve 8 and the flow meter 9 as shown by the phantom line of FIG. You may connect.

[Second Embodiment]
FIG. 2 shows a distribution facility equipped with only a natural flow system 6A that distributes purified water stored in the distribution reservoir 2 to consumers using the height difference, and is pressurized by a distribution pump 7 to consumers. 1 shows an embodiment in which a pressurized distribution pipe system 6B for distributing water and an improved water distribution support system of the present invention are newly installed. In this improved water distribution support system, the downstream side of the bypass pipe 11 is bifurcated. Each of the downstream branch pipe portions 11A and 11B is provided with a booster pump 18 capable of boosting the purified water sent from the water feed pipe 3 to a set water pressure, one of which is configured as a backup booster pump 18 In addition, a check valve 19A for preventing a reverse flow from the secondary side to the primary side when the driving of the booster pump 18 is stopped is added to the secondary side of each booster pump 18. Also Te, reverse current blocking means B for preventing the backflow of clean water to the water pipe 3 side through the bypass pipe 11 from the water distribution pipeline system 6B side of the pressurizing system side of the water pipe 6 is constructed.

  Further, on the secondary side of the water distribution pump 7, when the water distribution pump 7 is stopped, purified water supplied from the water supply pipe 3 side through the bypass pipe 11 passes through the water distribution pump 7 upstream of the water distribution pipe system 6 </ b> B. A check valve 19B is provided to prevent backflow.

  In addition, a T-shaped pipe joint 20 and an on-off valve 21 attached to the branch pipe portion thereof are provided at an undivided water construction method at a branch location of both the distribution pipe systems 6A and 6B of the distribution pipe 6. 21 and the water distribution system 6B on the pressure system side can be bent along the partial spherical fitting surface at two locations in the tube axis direction, and can be expanded and contracted within a certain range in the tube axis direction. A flexible flexible expansion joint 22 is provided.

  Further, at the branching point between the upstream water pipe 6a and the downstream water pipe 6b constituting the water distribution pipe system 6B on the pressurization method side, an open / close attached to the T-shaped pipe joint 23 and its branch pipe part. A valve 24 is provided by an unrestricted water construction method. Between the on-off valve 24 and the upstream water distribution pipe 6a, the pipe 24 can be bent along a partially spherical fitting surface at two locations in the pipe axis direction, and the pipe shaft A flexible expansion and contraction pipe joint 25 is provided that can be expanded and contracted within a certain range in the core direction.

  The booster pump 18 and the check valves 19A of the backflow prevention means B and the water distribution pump 7 and the check valve 19B interposed on the secondary side of the booster pump 18 and the water receiving primary pressure in the water supply pipe 3 and the pump A supply switching means A that automatically switches the supply of purified water in the water supply pipe 3 to the bypass pipe 11 is configured using a differential pressure from the secondary pressure (secondary pressure of the water distribution pump 7). .

  That is, when the water distribution pump 7 is driven and both booster pumps 18 are stopped, the secondary side pressure of the water distribution pump 7 is higher than the water reception primary side pressure in the water supply pipe 3. Therefore, a part of the high-pressure side purified water discharged from the water distribution pump 7 is filled up to the intervening location of the check valve 19A of the bypass passage 11, and the inflow of the low-pressure side purified water from the water pipe 3 side of the check valve 19A Automatically stops at the place of intervention.

  Further, when both the water distribution pump 7 and both booster pumps 18 are stopped, the secondary pressure of the water distribution pump 7 is lower than the water reception primary pressure in the water supply pipe 3. The purified water is automatically supplied to the secondary side of the water distribution pump 7 in the water distribution line system 6B through the check valve 19A of the bypass pipe 11 at the received water surplus water pressure.

  Further, when the water distribution pump 7 is stopped and one of the booster pumps 18 is driven, the purified water supplied from the water supply pipe 3 side through the bypass pipe 11 with the received water surplus water pressure to the set water pressure. Since the pressure can be increased, not only can water be reliably distributed to each consumer in the water distribution area, but the water surplus water pressure can be used as the primary side (suction side) pressure of the booster pump 18, The power consumption of the pump can be reduced.

  Moreover, when the booster pump 18 is stopped, the resistance at the booster pump 18 is slightly increased, but the flow path for supplying purified water from the water supply pipe 3 through the bypass pipe 11 to the distribution system 6B on the pressurization method side. Therefore, even if a power outage, an electrical accident in the field, a failure of the water distribution pump 7 or the booster pump 18 occurs, and the water distribution by the water distribution pump 7 and the booster pump 18 becomes impossible, the water pipe Since the purified water in 3 can be distributed to each consumer at the received surplus water pressure, complete water cut-off can be avoided although the supply pressure is reduced.

  Further, in the time zone where the demand for water distribution is small, such as at night, by stopping the operation of both the water distribution pump 7 and both booster pumps 18, the secondary pressure of the water distribution pump 7 is the primary pressure of the water received in the water supply pipe 3. Since the purified water on the water pipe 3 side is automatically supplied to the secondary side of the water distribution pump 7 in the water distribution pipe system 6B through the check valve 19A of the bypass pipe 11 at the received water surplus water pressure, The purified water can be distributed to each consumer at the received water surplus water pressure, and power consumption and noise can be reduced.

  Furthermore, when a situation in which water supply is impossible occurs on the water supply pipe 3 side, the water supply pump 7 on the water supply pipe 6 side is driven, and the check valve 19A of the backflow prevention means B provided on the bypass pipe 11 drives the purified water. While preventing back flow to the water pipe 3 side, the purified water stored in the distribution reservoir 2 can be pressurized by the distribution pump 7 and distributed to consumers.

  Also in this embodiment, similarly to the first embodiment, the purified water of the water supply pipe 3 is selectively supplied to the bypass pipe 11 by the opening / closing operation of the on-off valve 14 interposed upstream of the bypass pipe 11. Although it is possible to configure the supply switching means A for switching, in the present embodiment, the on-off valve 14 on the upstream side of the bypass pipe 11 is normally kept open, and the bypass pipe 11 and the like are repaired. For example, the on-off valve 14 is closed when necessary.

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Third Embodiment]
FIG. 3 shows an improvement of the water distribution support system of the water distribution facility described in the first embodiment, and includes a water supply pipe section located between the flow meter 4 and the flow control valve 5 in the water supply pipe 3, and the water distribution pipe 6. The purified water in the water pipe 3 is not passed through the landing well 1 and the water reservoir 2 across the water distribution pipe section located on the upstream side (primary side) of the water distribution pump 7 in the water distribution system 6B on the pressure system side. A first bypass pipe 27 that is directly supplied to the pressurization method side water distribution pipe system 6B of the water distribution pipe 6 is connected, and the first bypass pipe is connected between the flow meter 4 and the flow rate control valve 5 in the water supply pipe 3. 27 is located between the water supply pipe section located upstream from the connection position 27, the downstream side (secondary side) of the water distribution pump 7 in the pressure side water distribution pipe system 6 </ b> B of the water distribution pipe 6, and the pressure control valve 8. Pressurize the water distribution pipe 6 to the purified water in the water distribution pipe 3 without passing through the landing well 1 and the distribution reservoir 2 over the distribution pipe section. The second bypass pipe 28 is connected to supply directly to the water distribution pipeline system 6B.

  The distribution pipe system 6B on the pressure system side of the distribution pipe 6 has two booster pumps 18 capable of increasing the purified water sent from the water supply pipe 3 through the first bypass pipe 27 to the set water pressure. 7 is connected to the secondary side of each booster pump 18 and the secondary side of the water distribution pump 7 when the drive is stopped. Check valves 41A and 41B for preventing a reverse flow from the secondary side to the primary side are added, and the check valve 41A and 41B are used for the first bypass from the distribution pipe line system 6B on the pressurization method side of the distribution pipe 6. First reverse flow blocking means B1 for blocking the reverse flow of purified water to the water pipe 3 side through the pipe 27 is configured.

  In addition, a first supply switching means A1 for switching the supply of purified water from the water supply pipe 3 to the first bypass pipe 27 is provided, and the first bypass pipe 27 and the first in the distribution system 6B on the pressurization system side. On / off valves 29 and 30 for mode switching are provided in each of the upstream pipe portions 6 c from the connection position with the downstream pipe portion of the 1 bypass pipe 27, and the purified water of the water supply pipe 3 with respect to the second bypass pipe 28. The second supply switching means A2 for switching the supply of water and the second backflow prevention means B2 for preventing the reverse flow of purified water from the water distribution pipe 6 side to the water supply pipe 3 side through the second bypass pipe 28 are provided.

  The upstream side pipe part of the first bypass pipe 27 and the upstream side pipe part and the downstream side pipe part of the second bypass pipe 28 are bendable along the partial spherical fitting surface at two locations in the tube axis direction. And the flexible expansion-contraction pipe joint 33 which can be expanded-contracted within the fixed range of a pipe axis direction is provided.

  A T-shaped pipe joint 31 and an on-off valve 32 attached to the branch pipe portion thereof are provided by a continuous water construction method at a connection location of the water supply pipe 3 with respect to the first bypass pipe 27. The on-off valve 32 and the first bypass The flexible telescopic pipe joint 33 is disposed between the upstream pipe part of the pipe 27, and a T-shaped pipe joint is provided at the connection point of the water supply pipe 3 to the second bypass pipe 28. 34 and an open / close valve 35 attached to the branch pipe portion thereof are provided by a continuous water method. Between the open / close valve 35 and the upstream pipe portion of the second bypass pipe 28, the flexible expansion joint 33 is provided. Furthermore, a T-shaped pipe joint 36 and an on-off valve 37 attached to the junction pipe portion thereof are constantly connected at the connection portion of the distribution system 6B on the pressurization method side with respect to the second bypass pipe 28. It is provided by the water method, and below this on-off valve 37 and the second bypass pipe 28 Wherein the flexible expansion joints 33 are disposed between the side tube portion.

  In addition, a T-shaped pipe joint 38 and an on-off valve 39 attached to the junction pipe portion of the T-shaped pipe joint 38 are provided by a continuous water construction method at the connection portion of the distribution system 6B on the pressurization method side to the first bypass pipe 27. The on-off valve 39 and the downstream pipe portion of the first bypass pipe 27 are connected.

  Further, the first supply switching means A1 is composed of both mode switching on-off valves 29 and 30, and the second backflow prevention means B2 is composed of a check valve 40 interposed in the middle of the second bypass pipe 28. Has been.

  The first supply switching means A1 has a water distribution pump 7, a booster pump 18, check valves 41A and 41B, and both mode switching on-off valves 29 and 30, and a water receiving primary pressure and a pump secondary pressure in the water supply pipe 3. It is configured to automatically switch the supply of purified water in the water supply pipe 3 to the first bypass pipe 27 using the differential pressure from the secondary pressure of the water distribution pump 7 and the booster pump 18.

  The second supply switching means A2 has a water distribution pump 7, a booster pump 18, and check valves 41A, 41B, 40, and receives water primary side pressure and pump secondary side pressure in the water pipe 3 (water distribution pump 7 and booster pump 18). The secondary water pressure) is used to automatically switch the supply of purified water in the water supply pipe 3 to the second bypass pipe 28.

  Then, the mode switching on-off valve 29 provided in the first bypass pipe 27 is opened, and the connection position with the downstream pipe section of the first bypass pipe 27 in the water distribution pipe system 6B on the pressurization method side. In addition, the mode switching on-off valve 30 provided in the upstream pipe portion 6c is switched to the closed state, and when one of the booster pumps 18 is driven, the received water surplus water pressure is used as the primary side (suction side) pressure of the booster pump 18. Therefore, the pumping capacity can be a lifting head obtained by subtracting the excess water pressure from the total lifting head.

  In this embodiment, the water distribution pump 7 is configured for backup. However, if the booster pump 18 is not provided, the water distribution pump 7 is provided instead. However, even in this case, Since the received water surplus water pressure can be used as the primary side (suction side) pressure of the water distribution pump 7, the head of the water distribution pump can be obtained by subtracting the surplus water pressure from the total head.

  In addition, when troubles such as a power failure, an electric accident in the field, a failure of the booster pump 18 or the distribution pump 7 occur, and the water distribution by the booster pump 18 and the distribution pump 7 becomes impossible, the booster pump 18 and the distribution pump 7 Since the secondary pressure of the secondary side becomes lower than the primary pressure on the water receiving pipe 3 due to the stop of the driving, the second bypass pipe 28 passes the purified water in the water pipe 3 without passing through the landing well 1 and the distributing reservoir 2. Through the booster pump 18 and the distribution pump 7 in the distribution pipe system 6B on the pressurization system side, and automatically switches to a state where it is directly supplied to the downstream pipe section. However, although the supply pressure is reduced, complete water interruption can be avoided, and the generation of turbid water due to water interruption is also reduced.

At this time, when the mode switching on-off valve 29 of the first bypass pipe 27 is in an open state, when the booster pump 18 and the water distribution pump 7 are stopped, their secondary pressures are received by the water pipe 3. Since the pressure is lower than the primary pressure of the water, the booster pump in the distribution line 6B on the pressurization system side passes through the first bypass pipe 27 without passing through the landing well 1 and the reservoir 2 for the purified water in the water pipe 3. 18 and the water supply pump 7 are automatically switched to a state of being directly supplied to the upstream pipe section (primary side).
Therefore, although the resistance in the booster pump 18 and the water distribution pump 7 is slightly increased, a flow path for supplying purified water from the water supply pipe 3 to the water distribution pipe system 6B on the pressurization method side through the first bypass pipe 27 is secured. The purified water in the water pipe 3 can be distributed to each consumer with the received water surplus water pressure.

  Further, in the time zone where the demand for water distribution is small, such as at night, by stopping the driving of the booster pump 18 and the water distribution pump 7, the secondary pressure of the booster pump 18 and the water distribution pump 7 is received by the water supply pipe 3. Since the pressure is lower than the primary pressure, the pressurized water in the water supply pipe 3 passes through the second bypass pipe 28 without passing through the landing well 1 and the reservoir 2 as in the case of the trouble described above. Since it automatically switches to a state where it is directly supplied to the downstream pipe section from the booster pump 18 and the water distribution pump 7 in the route system 6B, it is possible to distribute water to each consumer with the received water surplus water pressure on the water supply pipe 3 side. It is possible to reduce power consumption and noise.

  Further, when a situation in which water supply is impossible occurs on the water supply pipe 3 side, the mode switching on-off valve 29 provided in the first bypass pipe 27 is closed and the water distribution pipe system 6B on the pressurization method side is closed. By switching the mode switching on / off valve 30 provided in the upstream pipe portion 6c from the connection position with the downstream pipe portion of the first bypass pipe 27 in the open state to the open state and driving the water distribution pump 7, the second bypass While the check valve 17A provided on the pipe 28 and the check valve 17B provided on the secondary side of the booster pump 18 are used to prevent the reverse flow of the pressurized clean water, the water supplied to the reservoir 2 is pressurized with the water distribution pump 7. Can be distributed to customers.

  In the third embodiment described above, the downstream side pipe portion of the second bypass pipe 28 is connected to the downstream side (secondary side) of the water distribution pump 7 and the booster pump 18 in the pressure side water distribution pipe system 6B of the water distribution pipe 6. Although it connected to the water distribution pipe part located between the pressure control valve 8, as shown with a virtual line, the downstream pipe part of the 2nd bypass pipe 28 is located between the pressure control valve 8 and the flowmeter 9. It may be connected to the water distribution pipe section.

  Further, in the third embodiment described above, when the second bypass pipe 28 is removed and implemented, the configuration described in claim 2 of the claims, that is, the water supply pipe 3 for supplying purified water to the distribution reservoir 2. And among the pipes 6 that supply the purified water of the distribution reservoir 2 to the consumers with the distribution pump 7, the pipe 3 that does not go through the distribution reservoir 2 over the pipe located upstream of the distribution pump 7. A bypass pipe (first bypass pipe) 27 for directly supplying the purified water to the distribution pipe 6 is connected, and the supply switching means A1 for selectively supplying the purified water of the water transmission pipe 3 to the bypass pipe 27, and the distribution pipe It corresponds to the water distribution support system of the water distribution facility provided with the backflow prevention means B1 for preventing the backflow of purified water from the 6 side through the bypass pipe 27 to the water pipe 3 side.

  Also in this embodiment, as in the first embodiment or the second embodiment, the first bypass pipe can be opened and closed by opening / closing the on-off valves 32 and 39 interposed on the upstream side and the downstream side of the first bypass pipe 27. 27, it is possible to configure the first supply switching means A1 for selectively switching the supply of the purified water in the water pipe 3 to each other. In this embodiment, the both on-off valves 32 of the first bypass pipe 27 are provided. 39 are normally kept open, and are configured to close both the on-off valves 32 and 39 when the first bypass pipe 27 or the like needs to be repaired.

  Further, a first switch for selectively switching the supply of purified water in the water supply pipe 3 to the second bypass pipe 28 by opening / closing operations of the open / close valves 35, 37 provided upstream and downstream of the second bypass pipe 28. However, in the present embodiment, the on-off valves 35 and 37 of the second bypass pipe 28 are normally maintained in an open state, and the second bypass pipe 28 and the like When repair or the like is required, the on-off valves 35 and 37 are closed.

  Furthermore, in the embodiment, the first bypass pipe 27 and the second bypass pipe 28 are separately connected to the water supply pipe 3, but the first bypass pipe 27 or the second bypass connected to the water supply pipe 3 is used. The second bypass pipe 28 or the first bypass pipe 27 may be branched and connected to the pipe 28.

[Other Embodiments]
(1) In each of the above-described embodiments, a natural flow system distribution pipe system 6A that distributes water to consumers using the height difference, and a pressure distribution pipe that pressurizes with a distribution pump 7 and distributes water to the consumers. Although the distribution pipe 6 composed of the path system 6B has been described as an example, the distribution pipe may be configured only by the pressurization type distribution pipe system 6B that pressurizes with the water distribution pump 7 and distributes water to consumers. .
(2) In each of the above-described embodiments, the flexible expansion and contraction pipe joints 12, 22, 25, and 33 that can be bent and expanded are provided in a part of the piping system such as the bypass pipes 11, 27, and 28. Instead, a flexible pipe joint that can be bent or a telescopic pipe joint that can be expanded and contracted may be provided.

Schematic system diagram showing the water distribution support system of the water distribution facility of the first embodiment of the present invention Schematic system diagram showing the water distribution support system of the water distribution facility of the second embodiment of the present invention Schematic system diagram showing the water distribution support system of the water distribution facility of the third embodiment of the present invention

Explanation of symbols

A Supply switching means A1 Supply switching means A2 Supply switching means B Backflow prevention means B1 Backflow prevention means B2 Backflow prevention means 2 Reservoir 3 Water pipe 4 Flow meter 5 Flow control valve 6 Water distribution pipe 7 Water distribution pump 8 Pressure control valve 9 Flow meter DESCRIPTION OF SYMBOLS 11 Bypass pipe 12 Flexible expansion pipe joint 18 Booster pump 27 1st bypass pipe 28 2nd bypass pipe 29 On-off valve (mode switching on-off valve)
30 On-off valve (mode switching on-off valve)
33 Flexible expansion joint

Claims (12)

Of the water pipes that supply purified water to the reservoirs and the pipes that supply purified water from the reservoirs to consumers with the water distribution pumps, the pipes located downstream of the water distribution pumps do not pass through the water reservoirs. A bypass pipe that supplies the purified water from the water pipe directly to the distribution pipe is connected to the water supply pipe, the supply switching means for switching the supply of the purified water from the water pipe to the bypass pipe, and the purified water from the distribution pipe side to the water pipe side through the bypass pipe Water distribution support system of a water distribution facility provided with a backflow prevention means for preventing backflow of water. Of the water pipes that supply purified water to the reservoirs and the pipes that supply purified water from the reservoirs to consumers using the water distribution pumps, the pipes located upstream from the water distribution pumps do not pass through the water reservoirs. A bypass pipe that supplies the purified water from the water pipe directly to the water distribution pipe is connected to the pipe, a supply switching means for switching the supply of the purified water from the water pipe to the bypass pipe, and water purification from the water pipe to the water pipe through the bypass pipe. Water distribution support system of a water distribution facility provided with a backflow prevention means for preventing backflow of water. A bypass pipe that supplies the purified water from the distribution pipe directly to the distribution pipe without going through the distribution tank, across the distribution pipe that supplies the purified water to the distribution reservoir and the distribution pipe that supplies the purified water from the distribution reservoir to consumers. And a supply switching means for switching the supply of purified water from the water pipe to the bypass pipe, and a backflow prevention means for preventing the reverse flow of purified water from the water distribution pipe side through the bypass pipe to the water supply pipe side. The water distribution support system for water distribution facilities, where the bypass pipe is equipped with a booster pump for boosting the purified water. The water distribution support system for a water distribution facility according to claim 1, 2, or 3, wherein the upstream pipe portion of the bypass pipe is connected between a flow meter and a flow rate control valve in the water supply pipe. The distribution of the water distribution facility according to claim 1 or 3, wherein the supply switching means is configured to switch supply of purified water by a differential pressure between a primary water pressure at the water supply pipe and a secondary pressure of the water distribution pump. Support system. The water distribution support system for a water distribution facility according to claim 5, wherein a downstream pipe portion of the bypass pipe is connected between a water distribution pump and a pressure control valve in the water distribution pipe. The water distribution support system for a water distribution facility according to claim 5, wherein a downstream pipe portion of the bypass pipe is connected to a secondary side of a pressure control valve in the water distribution pipe. 8. The flexible pipe joint that can be bent, the telescopic pipe joint that can be stretched, or the flexible telescopic pipe joint that can be bent and stretched is provided on a part of the bypass pipe. Water distribution support system for water distribution facilities. Of the water pipes that supply purified water to the reservoirs and the pipes that supply purified water from the reservoirs to consumers with the water distribution pumps, the pipes located upstream from the water distribution pumps do not pass through the water reservoirs. A first bypass pipe for directly supplying purified water from the water pipe to the water distribution pipe is connected to the first bypass pipe, and supply switching means for switching supply of purified water from the water pipe to the first bypass pipe is provided. In addition, an opening / closing valve is provided in each upstream pipe section relative to the connection position with the downstream pipe section of the first bypass pipe in the water distribution pipe, and further across the downstream pipe section from the water distribution pump in the water supply pipe and the water distribution pipe. A second bypass pipe for supplying the purified water of the water pipe directly to the distribution pipe without passing through the reservoir, and a supply switching means for switching the supply of the purified water of the water pipe to the second bypass pipe; Through the second bypass pipe Water distribution support system distribution facilities that reverse current blocking means is provided for preventing the backflow of water purification to. The water distribution support system for a water distribution facility according to claim 9, wherein the upstream pipe section of the first bypass pipe and the upstream pipe section of the second bypass pipe are connected between a flow meter and a flow control valve in the water supply pipe. The water distribution support system for a water distribution facility according to claim 9 or 10, wherein a booster pump for boosting purified water is connected in parallel with the water distribution pump. A flexible flexible pipe joint or a telescopic expansion / contraction pipe joint or a flexible and telescopic flexible expansion / contraction pipe joint is provided on a part of the first bypass pipe or the second bypass pipe. A water distribution support system for a water distribution facility according to any one of the above.

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