JP5384135B2 - Water supply equipment - Google Patents

Description

  The present invention relates to a water supply facility installed in a high-rise building or the like.

  As a water supply system for water supply systems such as high-rise buildings and apartment buildings, in consideration of the lack of water pressure in the public water mains, water is sucked with a water supply pump and pressurized, and then supplied to the water supply system The water supply equipment which was made is disclosed by patent document 1, for example.

  Since the water pressure from the water main fluctuates, a system that includes a system that passes through the feed water pump and a system that does not have the feed water pump is detected, and the water pressure on the feed water system side is detected to switch the feed water pump. Patent Document 2 discloses a connection to a water main using a bypass pipe that bypasses the water pump system in an emergency. In such a water supply facility, metal fatigue due to vibration of the water supply pump accumulates when the water supply pump is driven in the path from the water supply pump to the water supply system, and water leakage due to breakage may occur. For example, Non-Patent Document 1 discloses a structure in which a flexible pipe is connected to a discharge port side outlet of a water supply pump to absorb vibration of the water supply pump. However, even if such a flexible pipe is used, the flexible pipe connected to the discharge port of the water pump is repeatedly expanded and contracted over a long period due to fluctuations in the pressure of the water discharged from the water pump. Has reported an accident in which a crack due to metal fatigue occurs in a bellows which is a main member of a flexible tube.

JP 2006-57623 A Japanese Patent Application Laid-Open No. 09-13436

"Piping trouble report", [online], Stainless Steel Association, [Search August 5, 2008], Internet <URL: http://www.jssa.gr.jp/greenpipe/g-report/pdf/ trouble04.pdf>

  In Patent Documents 1 and 2, a plurality of systems are provided between the water main side and the water supply system side, but control is performed so that the pressure of the water supply pump increases when the water pressure on the water supply system side decreases. Therefore, it cannot cope with water leakage that causes a decrease in water pressure. In the water supply facility using the water supply pump, the present invention can quickly recover the water supply to the water supply system even if the flexible pipe is damaged, such as a crack, and from the damaged portion of the first flexible pipe 103. An object of the present invention is to provide a water supply facility that can avoid water damage due to water leakage.

  In order to achieve the above object, in the present invention, a discharge port side of a water supply pump that sucks, pressurizes, and discharges water and a water supply system side that receives water from the water supply pump are coupled via a first flexible pipe. In the water supply facility that is provided, a bypass pipe is formed between the discharge port side and the water supply system side in parallel with the first flexible pipe, and a second flexible pipe is provided in the middle of the length of the bypass pipe. It is characterized by being connected.

  Further, in this water supply facility, a first cover that surrounds the outer periphery of the first flexible pipe and receives water leakage from the first flexible pipe, a first water leakage sensor that detects water leakage of the first cover, and the first water leakage sensor In a state in which no water leakage is detected, water discharged from the water supply pump under the state where the bypass conduit on each side of the water inlet / outlet side of the second flexible pipe is closed, the water supply system through the first flexible pipe On the other hand, when the first water leakage sensor detects water leakage from the first flexible pipe, the basic pipe line communicating with each side of the water inlet / outlet of the first flexible pipe is closed, and the water supply pump And a control panel for supplying the discharged water to the water supply system through the bypass pipe.

  According to the present invention, when the first flexible pipe is broken, the first flexible pipe is shut off and the bypass pipe is switched from the closed state to the water feedable state, so that the water can be quickly recovered by water feeding through the bypass pipe. Can do. Further, even during the period when the first flexible pipe is exchanged and attached, water supply to the water supply system through the bypass pipe can prevent long-time water breakage when repairing damage.

BRIEF DESCRIPTION OF THE DRAWINGS It is a general view which shows the water supply equipment which is one Example of this invention.

Hereinafter, details of the present invention will be described with reference to the drawings.
FIG. 1 is an overall view showing a water supply facility of this embodiment.
The suction port a3 of each of the water supply pumps p1, p2, and p3 is connected to the public water main pipe 1 via the lead-in pipe 2. During operation, each of the water supply pumps p1, p2, and p3 sucks water from the suction port, pressurizes the pump body a1, and then discharges it from the discharge port a2. Reference numeral 100 denotes a discharge side pipe connected to the discharge port a2 of each of the water supply pumps p1, p2, and p3, and 101 denotes a water supply system formed on the downstream side of the water supply pumps p1, p2, and p3. A water control valve 102 for adjusting the flow rate of water fed toward the end of the water supply system 101 is provided at the base of the water supply system 101. Reference numeral 103 denotes a first flexible pipe connected to the water outlet 100a of the discharge side pipe 100, and has a structure in which, for example, a metal bellows is externally fitted with a blade made of a cylindrical wire mesh. An electric release valve 5 is provided on the water inlet side of the first flexible pipe 103, and a check valve 104 is provided between the water outlet of the flexible pipe 103 and the water inlet 101 a of the water supply system 101. It is installed. The check valve 104 automatically restricts the water in the water supply system 101 from flowing into the first flexible pipe 103 by the action of gravity.

  In the above-described water supply equipment, during operation of the water supply pumps p1, p2, and p3, tap water pressurized by the pump main body a1 passes through the discharge side pipe line 100, the first flexible pipe 103, and the check valve 104 to supply the water supply system. After being pumped to 101 and the flow rate is adjusted by the water control valve 102, it is further supplied toward the end.

  The flexible pipe 103 absorbs misalignment between the discharge side pipe line 100 and the base part of the water supply system 101 when installing the water supply equipment, and allows the discharge side pipe line 100 and the water supply system 101 to be easily combined. In addition, the relative displacement generated between the water supply pumps p1, p2, p3 side components and the water supply system 101 due to the vibration of the pump body a1 during operation of the water supply pumps p1, p2, p3 is absorbed into each part. Prevent excessive loads from acting.

  Reference numeral 3 denotes a bypass pipeline for bypassing the basic pipeline section 3A located between the upstream pipeline location b1 and the downstream pipeline location b2 with respect to the first flexible pipe 103. A portion in the middle of the length of the discharge side pipe line 100 is connected to a water supply system portion on the former side portion from the water control valve 102 of the water supply system 101. A portion along the length of the bypass pipe 3 is formed by the second flexible pipe 4. Similar to the first flexible tube 103, the second flexible tube 4 has a structure in which, for example, a metal bellows is externally fitted with a blade of a cylindrical wire mesh. The minimum pipe cross-sectional area of the bypass pipe 3 is smaller than that of the basic pipe section 3 </ b> A including the first flexible pipe 103. Specifically, the former is preferably about one third of the latter from the viewpoint of cost.

  The water supply system 101 is composed of pipes formed in a net shape from the lowest floor to the highest floor in a high-rise building, and the water pumped through the water inlet 101a flows through the pipe to each necessary location with its stored energy. Be able to. This water supply system 101 may not be able to obtain a sufficient water pressure at the terminal water supply-necessary location simply by communicating directly with the water main 1.

  An electrically operated release valve 6 is provided on the upstream bypass line 3 that is the water inlet side of the second flexible pipe 4. 7 is a check valve provided on the downstream bypass pipe 3 which is the water outlet side of the second flexible pipe 4, and the gravity of the water in the water supply system 101 flows into the second flexible pipe 4 It regulates automatically. These check valves 104 and 7 can maintain a closed state by a gravitational action when there is no water flow from the upstream side to the downstream side.

  Reference numeral 8 denotes a first cover that surrounds the outer periphery of the first flexible pipe 103. The first cover 8 is configured to guide water leakage from the first flexible pipe 103 to the inner lower part, and is formed with a drain port 8a at the lowest position. . One end of a relatively thin pipe member forming the first drainage channel 9 is coupled to the drainage port 8a. The other end of the tube member 9 is guided to a position where no water damage occurs, and is disposed so as to have a downward slope toward the other end. Further, a first water leakage sensor 10 that detects water leakage from the first flexible tube 103 by detecting water flowing inward is provided in the middle of the length of the tube member 9.

  Reference numeral 11 denotes a second cover surrounding the outer periphery of the second flexible pipe 4, which is configured to guide water leakage from the second flexible pipe 4 to the inside of the lower part and has a drain outlet 11 a formed at the lowest position. . One end of a relatively thin pipe member that forms the second drainage channel 12 is connected to the drainage port 11a. The other end of the tube member 12 is guided to a position where no water damage or the like occurs, and is disposed so as to have a downward slope toward the other end. Further, a second water leakage sensor 13 that detects water leakage from the second flexible tube 4 by detecting water flowing inward is provided in the middle of the length of the tube member 12.

  Reference numeral 14 denotes a control panel which is connected to each of the first water leakage sensor 10 and the second water leakage sensor 13 via electric wires 15a and 15b, and which connects the electric release valve 5 and the electric release valve 6 to each of the electric wires 16a and 16b. Are connected through. The control panel 14 inputs the detection signals of the first water leakage sensor 10 and the second water leakage sensor 13 independently via the electric wires 15a and 15b, and controls the electric release valve 5 and the electric release valve 6 based on these detection signals. In order to open and close each independently, an output is generated, and this output is transmitted independently to each of the electric release valve 5 and the electric release valve 6 via the electric wires 16a and 16b.

Next, the usage example of the above-described water supply equipment and the operation of each part will be described separately for each case.
(A) In the case of a normal use state In the state in which the water supply pumps p1, p2, and p3 supply water to the water supply system 101 through the basic pipeline portion 3A including the first flexible pipe 103, the control panel 14 An output for closing the second electric release valve 6 and opening the first electric release valve 5 is output to these electric release valves 6 and 5. All of or a part of the three water supply pumps p1, p2, and p3 are set in an operating state.

  The water supply pumps p1, p2, and p3 in the operating state suck and press the tap water in the main water pipe 1, and then discharge it from the discharge port a2 into the discharge side pipe line 100. Subsequently, the first electric release valve 5 and The water is supplied to the water supply system 101 through the basic pipeline 3 </ b> A including the first flexible pipe 103 and the check valve 104. The tap water supplied in this way flows through the water control valve 102 toward the end of the water supply system 101 and is supplied at a sufficient pressure to the terminal where water supply is required.

  In addition, if water is supplied to the water supply system 101 only through the basic pipe line portion 3A for a long period of time, the water existing in the bypass pipe line 3 will remain without being replaced, and there is a risk of decay. is there. In order to prevent this, during the water feeding through the basic pipe line section 3A, the control panel 14 causes the second electrically operated open valve 6 to periodically move, for example, every several days for a period of several tens of seconds to several minutes (in the bypass pipe line 3). For a period of time sufficient for the water remaining in the water supply system 101 to flow out into the water supply system 101), and then operates so as to block the tap water automatically and periodically only the bypass pipe 3 or the basic pipe Water is supplied to the water supply system 101 through both the part 3 </ b> A and the bypass pipeline 3.

  In the normal use state described above, a sudden change in the amount of tap water frequently occurs due to the opening / closing operation of the faucet at each location where water supply is required in the water supply system 101. Each time this sudden change occurs, the pressure of the tap water in the basic pipeline section 3A varies, and the first flexible pipe 103 is repeatedly expanded and contracted due to this change. Further, during operation of the water supply pumps p1, p2, and p3, the pump main body a1 vibrates in the same shape as the discharge side pipe line 100 to cause relative displacement with the water supply system 101, which also causes the first flexible pipe. 103 is repeatedly expanded and contracted.

  Further, when water is normally supplied, the check valve 7 of the bypass pipe 3 is closed by the pressure of tap water in the water supply system 101 or by gravity applied to the valve body of the check valve 7. The closing of the check valve 7 and the closing of the second electric release valve 6 prevent the tap water from flowing into the second flexible pipe 4. Therefore, the second flexible pipe 4 is not frequently stretched and deformed due to fluctuations in the pressure of water existing inside the normal flexible water supply.

  During operation of the water supply pumps p1, p2, and p3, the bypass pipe 3 portion directly coupled to the discharge side pipe 100 vibrates in the same body as the pump main body a1 and is relatively between the water supply system 101. A displacement is caused, and it is inevitable that the second flexible tube 4 is repeatedly expanded and contracted due to the relative displacement.

(B) When water leakage occurs from the first flexible pipe 103 When the normal water supply is performed as described above, the bellows of the first flexible pipe 103 is damaged due to metal fatigue or the like, and the first flexible pipe 103 Tap water may leak. In this case, the water supply pumps p <b> 1, p <b> 2, and p <b> 3 automatically perform non-normal time water supply that supplies water to the water supply system 101 through the bypass conduit 3 including the second flexible pipe 4.

The operation when switching from the normal water supply to the non-normal water supply is performed as follows.
That is, the water leakage from the first flexible pipe 103 is guided to the inner surface of the first cover 8, moves to the lower portion thereof, and then flows down through the first drainage channel 9 through the drainage port 8a by gravity. At this time, the 1st water leak sensor 10 detects the flow of the water in the 1st drainage channel 9, and inputs a detection signal into the control panel 14 via the electric wire 15b.

  In response to the input of this detection signal, the control panel 14 outputs an output for stopping the water supply pumps p1, p2, and p3 in the operating state, and transmits the output to the start / stop control circuit of the water supply pumps p1, p2, and p3. On the other hand, the output for closing the first electric release valve 5 and opening the second electric release valve 6 is transmitted to the first electric release valve 5 and the second electric release valve 6 via the electric wires 16a and 16b. To do. Thereby, the water supply pumps p1, p2, and p3 in the operating state are immediately stopped, and in parallel with this, the first electric release valve 5 is closed and the second electric release valve 6 is opened.

  At this time, the closing of the first electric release valve 5 prevents the tap water supplied by the water supply pumps p1, p2, and p3 from flowing from the water inlet of the first flexible pipe 103 into the inside thereof. In addition, since the water pressure in the first flexible pipe 103 decreases, the check valve 104 of the basic pipe line section 3A is reliably closed by the tap water pressure in the water supply system 101. The tap water is prevented from flowing back from the water outlet to the inside. Since such an operation is performed instantaneously when water leaks from the first flexible pipe 103, water leakage from the first flexible pipe 103 is quickly prevented and a relatively small amount is required. A relatively small amount of tap water leaking from the pipe 103 is discharged through the first drainage channel 9 to a place where there is no problem.

  When the second electric release valve 6 is opened, tap water discharged by pressurizing the water supply pumps p1, p2, and p3 is sent to the water supply system 101 through the bypass line 3A.

  The control panel 14 restarts the operation of the arbitrary water supply pumps p1, p2, and p3 after the first electric release valve 5 is closed and the second electric release valve 6 is opened. For example, the operation at this time is performed as follows. That is, the timer counts that several seconds have elapsed from the time when the detection signal is input from the first water leakage sensor 10 to the control panel 14, and several seconds have elapsed. At that time, the output from the timer is input to the start / stop control circuit of the water supply pumps p1, p2, and p3, and the start / stop control circuit starts operation of any of the preset water supply pumps p1, p2, and p3 by this input. Let

  When the operation of the water supply pumps p1, p2, and p3 is resumed in this way, the non-normal time water supply is started, and the tap water pressurized and discharged by the water supply pumps p1, p2, and p3 passes through the basic pipe section 3A. Without passing through, the water is supplied to the water supply system 101 through the bypass pipe 3, and further supplied to the downstream side through the water control valve 102. In this non-normal time water supply, the bypass pipe 3 has a pipe cross-sectional area smaller than that of the basic pipe portion 3A, so that the water supply flow rate to the water supply system 101 is smaller than that of the normal time water supply. By adjusting the demand for tap water in 101, there is no serious inconvenience in the use of water at each demand destination of tap water.

  When such non-normal time water supply is performed, the check valve 104 of the basic pipe line portion 3A is surely closed by the tap water pressure of the water supply system 101. The inflow of tap water into the first flexible pipe 103 is prevented by the closing and the closing of the first electric release valve 5. Therefore, it is reliably prevented that the tap water supplied by the water supply pumps p 1, p 2, and p 3 leaks from the damaged portion of the first flexible pipe 103 during the non-normal time water supply.

  In connection with the detection signal input from the first water leakage sensor, the control panel immediately transmits an output for issuing an alarm to the alarm device. When the alarm device issues an alarm in this way, the person concerned can quickly detect the situation and can quickly perform repair work such as replacement of parts.

  When the water leakage of the first flexible pipe 103 is resolved and each part is restored by repair work of parts and the like, the non-normal time water supply is stopped by performing the switch operation of the control panel 14 and the normal time water supply described above is performed. Resumed.

(C) When water leakage occurs from the second flexible pipe 4 When normal water supply or non-normal water supply is performed as described above, the bellows of the second flexible pipe 4 is damaged due to metal fatigue, etc. 2 Tap water may leak from the flexible pipe 4.

  In this case, water leakage from the second flexible pipe 4 is guided to the inner surface of the second cover 11 and moves to the lower portion thereof, and then flows down through the second drainage channel 12 through the drainage port 11a by gravity. At this time, the second water leakage sensor 13 detects the flow of water in the second drainage channel 12 and inputs a detection signal to the control panel 14.

  In response to the input of this detection signal, the control panel 14 outputs an output for stopping the water supply pumps p1, p2, and p3 in the operating state, and transmits the output to the start / stop control circuit of the water supply pumps p1, p2, and p3. To do. When the detection signal of the second water leakage sensor 13 is input during normal time water supply, outputs for closing both the first electric release valve 5 and the second electric release valve 6 are output to the first electric release. When the time point when the detection signal of the second water leakage sensor 13 is input to the valve 5 and the second electric release valve 6 via the electric wires 16a and 16b is during non-normal time water supply, the first electric Since the output for closing the opening valve 5 is transmitted, only the output for closing the second electric opening valve 6 is transmitted to the second electric opening valve 6 via the electric wire 16b. Thereby, the water supply pumps p1, p2, and p3 in the operating state are immediately stopped, and both the first electric release valve 5 and the second electric release valve 6 are closed.

  At this time, the closing of the second electric release valve 6 prevents the tap water supplied from the water supply pumps p1, p2, and p3 from flowing inward from the water inlet of the second flexible pipe 4, and the second 2 Since the water pressure in the flexible pipe 4 decreases due to water leakage, the check valve 7 of the bypass pipe 3 is securely closed by the pressure of tap water in the water supply system 101 and the outlet of the second flexible pipe 4 To prevent the tap water from flowing back into it. Since such an operation is performed instantaneously when water leaks from the second flexible pipe 4, water leakage from the second flexible pipe 4 is quickly prevented and a relatively small amount is sufficient. A relatively small amount of tap water leaking from the pipe 4 is discharged to a place where there is no problem through the second drainage channel 12.

  After the operation of the water supply pumps p1, p2, and p3 is stopped and the second electric release valve 6 is closed, the control panel 14 maintains this state unless a release command is input by a switch operation or the like. On the other hand, in connection with the detection signal input from the second water leakage sensor 13, the alarm output by the input is immediately transmitted to the alarm device. As a result, the parties concerned can quickly detect the situation, and can quickly perform repair work such as replacement of parts.

  After the leakage of the second flexible pipe 4 is eliminated by repairing parts or the like, or the leakage of water from both the first flexible pipe 103 and the second flexible pipe 4 is eliminated and each part is restored, the control panel 14 When the switch operation is performed, the normal water supply described above is resumed.

  In the case of (c), the cause when only the second water leakage sensor 13 detects water leakage during normal water supply is that the second flexible pipe 4 is damaged and the water stop function of the second electric release valve 6 or It is conceivable that one of the water stop functions of the check valve 7 of the bypass line 3 is impaired. For this reason, even when only the second water leakage sensor 13 detects water leakage during normal water supply, not only the second electric release valve 6 but also the first electric release valve 5 is closed and the water supply pump p1 is used. , P2 and p3 are maintained in a stopped state.

  In the above-described embodiment, the use in the case where the tap water in the water main 1 is pressurized and supplied to the water supply system 101 has been described. However, the present invention is not limited to such a use. For example, the well water is sucked up. It may be used so as to pressurize and feed water to the water supply system 101.

DESCRIPTION OF SYMBOLS 3 Bypass pipe line 3A Basic pipe line part 4 2nd flexible pipe 8 1st cover 9 1st drainage channel 10 1st water leak sensor 11 This 2nd cover 12 2nd drainage channel 13 2nd water leak sensor 100 Discharge side pipe line 100a Water Outlet 101 Water supply system 101a Water inlet 103 First flexible pipe a2 Discharge port b1 Upstream pipe location b2 Downstream pipeline location p1 Water supply pump p2 Water supply pump p3 Water supply pump

Claims (4)

  In the water supply facility in which a discharge port side of a water supply pump that sucks, pressurizes, and discharges water and a water supply system side that receives water from the water supply pump are coupled via a first flexible pipe, the first flexible A water supply facility characterized in that a bypass conduit is formed between the discharge port side and the water supply system side in parallel with the tube, and a second flexible tube is coupled to a portion in the middle of the length of the bypass conduit .   The water supply facility according to claim 1, wherein a first cover that surrounds the outer periphery of the first flexible pipe and receives water leakage from the first flexible pipe, a first water leakage sensor that detects water leakage of the first cover, In a state where the first water leakage sensor does not detect water leakage, water discharged from the water supply pump under the state where the bypass conduit on each side of the water inlet / outlet of the second flexible tube is closed is the first flexible tube. On the other hand, when the first water leakage sensor detects water leakage from the first flexible pipe, closes the basic pipe line section that leads to each side of the water inlet / outlet of the first flexible pipe, A water supply facility comprising: a control panel for supplying water discharged from the water supply pump to the water supply system through the bypass pipeline.   3. The water supply facility according to claim 1, wherein a minimum pipe cross-sectional area of the bypass pipe is smaller than that of the basic pipe section.   4. The water supply facility according to claim 2 or 3, wherein the control panel operates so as to periodically open and close a bypass pipeline on each side of the water inlet / outlet of the second flexible pipe and stays in the bypass pipeline. The water supply equipment is characterized by causing the water to flow out into the water supply system.