JPH10307974A - Water leak detection device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a water leak detection device that immediately outputs a warning sound when water leakage is detected during the operation of a manufacturing device, but does not perform a water supply stop or a device stop operation simultaneously with a warning. When a water leak sensor detects a water leak, a water leak detecting section for supplying a relay power to a first relay to turn on a contact thereof, and a timer for starting operation by turning on the contact.
And a second relay which is turned on after a set time of the timer.
And a water leakage detection device having: After water leakage detection, water supply stop and device stop operation are performed after the elapse of a predetermined time, so it is possible to take appropriate measures after confirming the site of water leakage,
Loss due to unnecessary stoppage of the production equipment can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water leakage detecting device which detects a water leakage during the operation of a manufacturing apparatus and promptly detects the situation and outputs a control signal for water leakage treatment.

[0002]

2. Description of the Related Art An example of a conventional water leakage detecting device will be described with reference to FIG. This water leak detection device has a relay
It comprises a relay 21, a relay 22, an on / off switch 5, and an alarm buzzer-3. In this leak detection device,
When the leak sensor detects a leak, the leak sensor signal line 6
, A water leak detection signal is output from the water leak detection unit 1, the contact rl-1 of the relay 21 is turned on by the signal, and the buzzer 3 emits an alarm sound. Further, since the contact rl-2 is turned on and power is supplied to the relay 22, the water supply of the water leak source is stopped by the action of the relay 22. Also, the buzzer-3 is released by turning off the on / off switch 5, and after the water leakage treatment,
The on / off switch 5 is turned on to make the water leakage detection operation possible again.

[0003]

However, in the conventional water leakage detection device, an alarm sound is output immediately upon detection of water leakage, and at the same time, the water supply or the production device is forcibly stopped. Therefore, even if the water leak source is water for cleaning and the like and it is not necessary to stop the water supply and the production apparatus, there is a disadvantage that the water supply and the production apparatus are stopped. An object of the present invention is to provide a water leakage detection device that operates a relay for water leakage treatment that stops water supply or production equipment after a predetermined time elapses after detecting water leakage, excluding such disadvantages. .

[0004]

SUMMARY OF THE INVENTION The present invention provides a water leakage sensor.
When a water leak is detected, a relay power is supplied to the first relay to turn on the contact, a timer for starting operation by turning on the contact, and a timer turned on after a set time of the timer. And a water leakage detecting device having a second relay. Further, the water leak detection device is characterized in that it has an alarm means that is activated by turning on a contact of the first relay.

[0005]

FIG. 1 shows a configuration of a water leakage detecting device according to a first embodiment of the present invention. Water leak detector 1
And relays 21 and 22, alarm buzzer-3, timer relay-4
And an on / off switch 5. It is different from the conventional water leakage detecting device in that a timer relay-4 is added. When the water leak sensor detects a water leak,
The contact rl-1 of the first relay 21 is turned on by the water leak detection signal output from the water leak detection unit via the signal line 6. Since the on / off switch is in the on state during the water leakage detection period, the alarm buzzer-3 supplied with power from the power supply line 7 via the contact rl-1 continues to sound, and at the same time, the timer
Relay-4 starts operation. Contact d of timer relay-4
l is turned on after a preset time has elapsed. When the contact dl is turned on, the second relays 22, 22
It is possible to stop the water supply by closing the solenoid valve or the electric valve by the drive current flowing through the relay 22 or to stop the manufacturing apparatus by opening the electromagnetic circuit breaker by the drive current flowing through the relay 23 when the contact point 3 is turned on. Become. And
The on / off switch 5 is turned off to release the alarm buzzer, and after the water leakage treatment, the on / off switch 5 is turned on to return to an operable state.

FIG. 2 shows a configuration of a water leakage detecting device according to a second embodiment of the present invention. In the configuration of FIG. 1 described above, the alarm buzzer-3 and the on / off switch 5 are provided. However, the water leakage detection and alarm device of FIG. 2 does not have them. When the production equipment manager is at a remote location, a warning buzzer is not built into the water leakage detection device, and a contact of a relay 24 that is turned on when there is water leakage is used, and a known communication means such as wireless communication is used. The system is configured to sound an alarm buzzer installed at a remote location. Water leak sensor
Detects the water leakage, the contact rl-1 of the first relay 21 is turned on by the water leakage detection signal output from the water leakage detecting unit via the water leakage sensor signal line 6, and the timer relay 4 operates. Then, the contacts of the relay 24 are turned on at the same time. A remote alarm buzzer is sounded using the contact signal of the relay 24. The contact dl of the timer relay-4 is turned on after a preset time has elapsed. By turning on the contact dl, the contacts of the second relays 22 and 23 are turned on, so that the water supply can be stopped or the manufacturing apparatus can be stopped.

[0007]

As described above, according to the present invention, when a water leak occurs, the occurrence of the water leak is immediately detected by a warning buzzer at the site where the water leak occurred or at a remote place, and the setting of the timer for starting the operation simultaneously with the alarm is set. If it is not necessary to stop the water supply after checking the site of the water leakage within the time, resetting only the alarm device has an effect of preventing the loss due to unnecessary stoppage of the manufacturing apparatus. Further, by stopping the supply of the cooling water after the cooling of the apparatus, it is possible to safely stop the manufacturing apparatus.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a water leakage detection device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a water leakage detection device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a conventional water leakage detection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water leak detection part 3 Alarm buzzer 4 Timer relay 5 ON / OFF switch 6 Water leak sensor signal line 7 Power supply line 21-24 Relay

Claims (2)

[Claims] When a water leak sensor detects a water leak, it is relayed.
A water leak detection unit that supplies power to the first relay to turn on its contact, a timer that starts operating when the contact is turned on, and a second relay that turns on after a set time of the timer. A water leakage detection device comprising: 2. The leak detecting device according to claim 1, wherein
An apparatus for detecting water leakage, comprising alarm means that operates when a contact of the first relay is turned on.