JP2004308176A - Water supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water supply system for reducing the size, weight, and manufacturing costs of the water supply system. <P>SOLUTION: This water supply system has a pump 1 for forcibly feeding water, a control panel 2 for controlling operation of the pump 1, and a vibration control stand 9 for absorbing vibration of the pump 1. The pump 1 and the control panel 2 are directly installed on the vibration control stand 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a water supply device for supplying water to buildings such as office buildings and condominiums.
[0002]
[Prior art]
A water supply device is widely used as a device for supplying water (tap water) to buildings such as office buildings and condominiums. Generally, this water supply device is provided with a plurality of centrifugal pumps for pumping water and a control panel for controlling the operation of these centrifugal pumps. The suction port of the centrifugal pump is connected to a water receiving tank or a distribution pipe, and the water introduced from these is boosted to a predetermined pressure by the centrifugal pump, and then supplied to each room through a pipe provided inside the building. .
[0003]
FIG. 2 shows a conventional water supply device. 2A is a front view of a conventional water supply device, FIG. 2B is a side view of the water supply device shown in FIG. 2A, and FIG. 2C is shown in FIG. It is a top view of a water supply apparatus. As shown in FIGS. 2A to 2C, the water supply device includes three vertical centrifugal pumps 1, a control panel 2 that controls the operation of the centrifugal pump 1, and a discharge port 6 of the centrifugal pump 1. And a piping section 3 connected to the main body.
[0004]
The suction port 5 of the centrifugal pump 1 is connected to a water receiving tank or a water distribution pipe (not shown). Then, by operating the centrifugal pump 1, tap water is sucked into the centrifugal pump 1 from the suction port 5, and after being raised to a predetermined pressure, supplied to a required building via the piping 3. The control panel 2 controls the rotation speed of the motor 7 of the centrifugal pump 1 so that the tap water discharged from the centrifugal pump 1 is raised to a predetermined pressure.
[0005]
The above-described centrifugal pump 1, the pipe section 3, and the control panel 2 are all fixed to the upper surface of the unit base 8, thereby forming a water supply device as one unit. An anti-vibration gantry 9 is placed at the installation location of the water supply device, and the water supply device is fixed on the anti-vibration gantry 9 via bolts. The anti-vibration pedestal 9 includes a plurality of vibration absorbers 20, and the vibration absorber 20 prevents vibration of the entire water supply device.
[0006]
[Problems to be solved by the invention]
In the water supply device configured as described above, the size of the centrifugal pump increases as the required amount of supplied water increases, and the number of centrifugal pumps needs to be increased. Therefore, the weight of the centrifugal pump increases, and the total weight of each device such as the centrifugal pump and the control panel mounted on the unit base increases. As a result, it is necessary to secure the mechanical strength of the unit base, and the unit base is increased in size and the weight of the unit base is increased.
[0007]
When the size of the unit base is increased in this way, there is a problem that the height of the whole water supply device is increased and the weight of the water supply device including the unit base is increased. In addition, there is a need to prepare a vibration isolating gantry that can withstand the weight of the water supply device, and there is a problem that the cost of the vibration isolating gantry increases.
[0008]
The present invention has been made to solve the above-described conventional problems, and provides a water supply device that can realize a reduction in size and weight of the water supply device and can further reduce the manufacturing cost. The purpose is to:
[0009]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention includes a pump for pumping water, a control panel for controlling operation of the pump, and a vibration isolator for absorbing vibration of the pump, and the pump and the pump A control panel is directly attached to the vibration-proof gantry.
[0010]
According to the present invention configured as described above, since the unit base can be omitted, the water supply device can be reduced in weight and the height of the water supply device can be reduced. In addition, since no unit base is required, manufacturing costs can be reduced. Furthermore, since the anti-vibration gantry is built in the water supply device in advance, the work of assembling the water supply device at the installation site can be omitted.
[0011]
In a preferred aspect of the present invention, the apparatus further includes a pipe portion connected to a discharge port of the pump, and the pipe portion is directly attached to the vibration isolation gantry.
Normally, during operation of the water supply device, vibration and noise are generated from the pump, and the vibration and noise are transmitted to the building via a pipe connected to the pump. According to the present invention, the vibration transmitted to the piping unit can be absorbed by the vibration isolation gantry by directly attaching the piping unit to the vibration isolation gantry, whereby the vibration and noise of the pump are transmitted to the building. Can be prevented.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1A is a front view showing a water supply device according to an embodiment of the present invention, FIG. 1B is a side view of the water supply device shown in FIG. 1A, and FIG. FIG. 2 is a plan view of the water supply device shown in FIG.
[0013]
As shown in FIGS. 1A to 1C, the water supply device controls three vertical centrifugal pumps 1 for pumping water (tap water) and the operation of these centrifugal pumps 1. A control panel (control device) 2, a piping section 3 connected to each of the centrifugal pumps 1, and an anti-vibration gantry 9 for absorbing vibration of the centrifugal pump 1 are provided. The centrifugal pump 1 includes a plurality of stages of impellers (not shown) and a motor 7 for driving the impellers to rotate. A suction port 5 and a discharge port 6 are provided at a lower portion of the centrifugal pump 1 and are located at the same height. The suction port 5 is connected to a water receiving tank or a water distribution pipe (not shown), and the discharge port 6 is connected to the pipe section 3.
[0014]
The pipe section 3 includes three connection pipes 11, one discharge pipe (discharge header) 12, and a suction pipe (suction header; not shown). The upstream end of the connection pipe 11 is connected to the discharge port 6 of each centrifugal pump 1, and the downstream end of each connection pipe 11 is connected to the discharge pipe 12. With such a configuration, the water discharged from each centrifugal pump 1 is transferred to the discharge pipe 12 via each connection pipe 11, and the flows of the water are merged in the discharge pipe 12.
[0015]
The connection pipe 11 is provided with a flow switch 14 for detecting the flow rate of water, a check valve 15 for preventing backflow of water, and a sluice valve 16 for opening and closing the connection pipe 11. The water flowing into the connection pipe 11 passes through the flow switch 14, the check valve 15, and the sluice valve 16 in this order, and is discharged to the outside via the discharge pipe 12. The outlet 12a of the discharge pipe 12 is connected to a water supply pipe installed in a building.
[0016]
A pressure sensor (not shown) is provided on the discharge side of each centrifugal pump 1, and the pressure of water discharged from the centrifugal pump 1 (hereinafter, referred to as discharge pressure) is detected by the pressure sensor. The pressure sensor is connected to the control panel 2, and a detection value of the pressure sensor is transmitted from the pressure sensor to the control panel 2.
[0017]
The control panel 2 is provided with an inverter (not shown), and the rotation speed of the motor 7 of the centrifugal pump 1 is accelerated / decelerated by the inverter. Then, the control panel 2 controls the rotation speed of the motor 7 of the centrifugal pump 1 based on the detection value (water discharge pressure) sent from the pressure sensor so that the water is raised to a predetermined pressure. With such a configuration, the water sucked in from the suction port 5 is pressurized to a predetermined pressure by the centrifugal pump 1 and supplied to a required building via the pipe unit 3.
[0018]
As shown in FIG. 1A and FIG. 1B, the centrifugal pump 1, the control panel 2, and the piping 3 are fixed on the upper surface of the vibration isolation gantry 9. The anti-vibration pedestal 9 includes an upper pedestal 18 and a lower pedestal 19, and a plurality of vibration absorbers 20 disposed between the upper pedestal 18 and the lower pedestal 19. The vibration absorber 20 includes an elastic body such as rubber and a resin that covers the periphery of the elastic body.
[0019]
According to the anti-vibration gantry 9 configured as described above, the vibration of the centrifugal pump 1 placed on the anti-vibration gantry 9 is prevented from being transmitted to the installation surface. In addition, the vibration of the centrifugal pump 1 and the piping 3 connected to the centrifugal pump 1 is absorbed by the vibration isolator 9, thereby preventing the transmission of vibration and noise to the building via the piping 3. Is done.
[0020]
The centrifugal pump 1, the control panel 2, and the piping section 3 are fixed to the upper base 18 with bolts (not shown). Then, in the present embodiment, a water supply device as one unit is configured in a state in which the devices such as the centrifugal pump 1 and the control panel 2 are fixed to the vibration isolation gantry 9. The water supply device is carried to the installation site in a state where the anti-vibration gantry 9 is attached, and the discharge pipe 12 of the water supply device is connected to the water supply pipe provided in the building.
[0021]
As described above, since each device such as the centrifugal pump 1 and the control panel 2 is directly fixed to the vibration isolating pedestal 9, a unit base can be omitted. Thereby, the weight and manufacturing cost of the water supply device can be reduced, and the height of the water supply device can be reduced. In addition, since the centrifugal pump 1, the control panel 2, and the piping unit 3 are fixed to the vibration isolator 9 in advance, the work of assembling the water supply device at the installation site can be omitted. Although the water supply device according to the present embodiment includes three centrifugal pumps, the number of centrifugal pumps can be changed according to a required water supply amount.
[0022]
【The invention's effect】
As described above, according to the present invention, since the unit base can be omitted, the water supply device can be reduced in weight and the height of the water supply device can be reduced. In addition, since no unit base is required, manufacturing costs can be reduced. Furthermore, since the anti-vibration gantry is built in the water supply device in advance, the work of assembling the water supply device at the installation site can be omitted.
[Brief description of the drawings]
FIG. 1A is a front view showing a water supply device according to an embodiment of the present invention, and FIG. 1B is a side view of the water supply device shown in FIG. FIG. 2C is a plan view of the water supply device shown in FIG.
2 (a) is a front view of a conventional water supply device, FIG. 2 (b) is a side view of the water supply device shown in FIG. 2 (a), and FIG. 2 (c) is FIG. It is a top view of the water supply apparatus shown to a).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Centrifugal pump 2 Control board 3 Piping part 5 Suction port 6 Discharge port 7 Motor 8 Unit base 9 Vibration-proof stand 11 Connecting pipe 12 Discharge pipe 14 Flow switch 15 Check valve 16 Sluice valve 18 Upper mount 19 Lower mount 20 Absorber

Claims (2)

A pump for pumping water,
A control panel for controlling the operation of the pump,
And a vibration isolator that absorbs the vibration of the pump,
A water supply device, wherein the pump and the control panel are directly attached to the vibration isolation gantry. The water supply device according to claim 1, further comprising a pipe portion connected to a discharge port of the pump, wherein the pipe portion is directly attached to the vibration isolation gantry.

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