JP2923638B2 - Pressurizing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directly connected to a water supply pipe.
The present invention relates to a pressurizing device including a pump .

[0002]

BACKGROUND OF THE INVENTION Problems to be Solved] of conventional
The water supply system is used to store water from the water supply and distribution pipes.
Provide a receiving tank, pressurize the water stored in the receiving tank with a pump
Generally, it is configured to supply water to each demand point.
You. However, such a method of installing a water receiving tank is
It is said that regular cleaning of the receiving tank is necessary from the point of life management
Problems and the need for installation space for receiving tanks
is there. Therefore, a pump is directly connected to the water supply and distribution pipe,
Water is sucked in from the suction port on the side and discharged from the discharge port on the secondary side.
To be configured to directly increase the pressure in the secondary side water supply pipe
Can be considered. By doing so, the above-mentioned water receiving tank is provided
Not only does it need to be
The pressure was the primary inlet pressure plus the pump water supply pressure
Pressure and the pump inlet pressure (primary water supply / distribution)
Pipe pressure) can be used effectively, saving energy.
There are advantages. However, connecting the pump directly to the water supply pipe
If other equipment is connected to the water supply pipe on the primary side of the pump,
These devices are often connected
In order for the pump to be able to
Need to be kept.

[0003] If the pump is operated despite the low pressure on the primary side of the pump, there is a problem that the decrease in the primary side pressure is promoted and the equipment connected to the primary side is damaged.
is there. For example, that if the primary side has a feed water pipes Water Authority or problems that are not water to other customers water pressure drops, if the hydrant is connected can not discharge water from the hydrant to emergency fire occurrence Problems arise.

The present invention has been made in view of the above points, and has a structure in which a pressurizing device is configured to directly connect a pump to a water supply and distribution pipe,
Other pressure on the primary side of the pump is connected to a predetermined or set senses that falls below the pressure raise an alarm, or immediately stops the operation of the pump with alarm, the primary side supply water pipe
It does not cause any trouble to the equipment.

[0005]

The invention according to claim 1 for solving the above problems SUMMARY OF THE INVENTION are directly connected the pump to supply water distribution pipes,
The water supply pipe on the primary side of the pump is supplied with water from the water supply pipe.
Other equipment connected to the pump from the primary inlet
By discharging water from the secondary side discharge port narrowing have intake, constitute a pressurizing unit to pressurize the pressure of the secondary side supply distribution water pipe
And, the pressurizing device, a pressure detecting means for detecting a feed water distribution pipe pressure of the pump suction side, a feed water distribution pipe pressure value of the pump suction side detected by the pressure detecting means and the primary side of the pump feeding Arrangement
The pressure hinder other devices connected to the water pipe does not occur by comparing the set pressure value set pre <br/> Me, feeding of the pump suction
When the pressure value in the distribution pipe becomes equal to or less than the set pressure value, a means for transmitting only an alarm signal or an alarm signal and a pump stop signal is provided.

According to a second aspect of the present invention, in the pressurizing apparatus according to the first aspect, a pressure setting means for setting the set pressure value is provided.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration example of a pump protection device of a pressurizing device according to the present invention.

As shown, the pressurizing device has the pump 1 directly connected in the middle of the pipe 9. That is, the pipe 9 is connected to the primary suction port and the secondary discharge port of the pump 1. In such a pressurizing device, other devices 6, 7, 8 are installed (connected) to the pipe 9 on the primary side of the pump, that is, on the suction side. In order to operate these devices 6, 7, 8 normally and to prevent the performance of the pressurizing device itself from deteriorating, a certain pressure must always be secured on the primary side of the pump. For that purpose, it is necessary to generate an alarm and stop the pump when the pressure in the pipe 9 on the primary side falls below this pressure.

On the primary side of the pump 1, a pressure detecting means 3 for detecting the pressure in the pipe 9, that is, the suction side pressure, is provided in the pipe 9. The output of the pressure detecting means 3 is connected to one input terminal of the comparator 5. The output of the pressure setting means 4 is connected to the other input terminal of the comparator 5. The output of the comparator 5 is connected to the control panel 2. Further, a motor (not shown) for driving the pump 1 is connected to the control panel 2.

The comparator 5 compares the pressure value detected by the pressure detecting means 3 with the set pressure value set by the pressure setting means 4, and if the measured pressure value (the output value of the pressure detecting means 3) is set. If the pressure is lower than the pressure value, an alarm signal or a pump operation stop signal, and in some cases, an alarm signal and a pump stop signal are transmitted to the control panel 2 at the same time. When the control panel 2 receives these signals, it issues an alarm with a buzzer or the like, or stops the motor of the pump 1. Or, in some cases, the alarm and the motor stop are performed simultaneously. Note that, among the signals from the comparator 5, particularly the alarm signal may directly sound the buzzer without passing through the control panel 2.

As described above, the pump 1 is directly connected in the middle of the pipe 9, sucks fluid from the primary side, and discharges it to the secondary side.
In a pressurizing device for pressurizing the pressure in the pipe 9 on the secondary side,
When the pressure in the pipe 9 on the primary side becomes lower than the set pressure value set by the pressure setting means 4 by providing the pump protection means composed of the pressure detecting means 3, the pressure setting means 4, the control panel 2, etc. By issuing an alarm from the control panel 2 and stopping the operation of the pump 1, a malfunction occurs in the equipment 6, 7, 8 connected to the primary side, for example, the water distribution pipe in which the primary side is a water pipe of the Waterworks Bureau. In the case where another customer or fire hydrant is connected to the refrigeration system, it is possible to prevent a problem that water cannot be supplied to another customer or water cannot be discharged from the fire hydrant due to a decrease in water pressure.

[0012]

As described above, according to the present invention, the following excellent effects can be obtained. (1) According to the invention described in claim 1, the pump suction
Pressure detecting means for detecting a pressure in a water supply / distribution pipe;
The pressure value detected by the means is connected to the water supply pipe on the primary side of the pump.
To a pressure that will not interfere with the operation of other connected equipment.
The set pressure value is compared with the set pressure value, and the supply and
Luo alarm signal water pipe pressure value falls below the set pressure value
Look, or because it transmits an alarm signal and the pump stop signal, one
The operation of this pressurizing device is continued without noticing the pressure drop in the secondary water supply / discharge pipe , and the pressure is further reduced.
It is possible to eliminate a disadvantage that causes a failure of equipment connected to the water supply pipe .

[0013]

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a pump protection device of a pressurizing device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pump 2 Control panel 3 Pressure detecting means 4 Pressure setting means 5 Comparator 6 Other equipment 7 Other equipment 8 Other equipment 9 Piping

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F04B 49/10 311 F04D 15/00 F04D 15/02

Claims (2)

(57) [Claims] 1. A directly connected the pump to supply water distribution pipes, of the pump
In the primary side water supply pipe, another machine supplied with water from this water supply pipe
Vessel is connected, by discharging from the suction have write <br/> seen secondary side discharge port of water from the primary side inlet of the pump to pressurize the pressure of the secondary side supply distribution water <br/> pipe the pressurizing device configured to, in the pressurizing system, the pump suction side of the pressure detecting means for detecting a feed water distribution pipe pressure, the pump suction side of the feed distribution pipe pressure detected by the pressure detecting means Value and the primary side of the pump
Pressure that does not interfere with other equipment connected to the water supply pipe
To the set pressure value set in advance to the pump suction side.
A pressurizing device provided with means for transmitting only an alarm signal or an alarm signal and a pump stop signal when the pressure value in the water supply / discharge pipe becomes equal to or lower than the set pressure value. 2. The pressurizing device according to claim 1, further comprising pressure setting means for setting the set pressure value.