JPH03287039A - System for monitoring leak of liquid flowing through piping network for every monitor area - Google Patents

Abstract

PURPOSE:To find a leak of a water supply or others automatically in unmanned service and to take a countermeasure such as alarm transmission by dividing the liquid piping network into plural monitor areas, providing a flow rate sensor with a flow rate signal transmitting function in piping in each area, and providing an inspection device with a monitor signal transmitting function in each area. CONSTITUTION:Each of dwelling multistory dwelling units is regarded as a monitor area, the flow rate sensor 11 with the flow rate transmitting function is fitted to a branch water pipe from water piping 7, and a presence/absence state is judged by inputting the signal of a card reader 13 fitted to an entrance door 6 to a controller 14 installed in a superintendent office. When a presence signal is inputted from the card reader 13, the flow rate sensor 11 is placed in a non-monitor state, but when an absence signal is inputted, the sensor is placed in a monitor state. If a flow rate signal is inputted from the flow rate senor 11 in the monitor state, it is judged that there is a leak or that a faucet is left open forgetfully, etc., and while an alarm is generated, a shut-off 12 valve is closed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a system that divides a water supply or other liquid piping network into a plurality of parts and monitors the leakage status of each piping network. .

[Prior Art] In the case of high-rise apartment buildings, tenant buildings, plants, etc., automatic monitoring of liquid leakage from water supply, hot water, and other liquid piping or terminals is not performed at all.

[Problems with the prior art] For this reason, in high-rise housing, etc., there may be a delay in discovering water leaks in each unit.Especially, people forget to turn off the water supply faucet in the bathroom, or the automatic shut-off valve for flush toilets. There are many cases where water overflows when people are not at home due to problems such as pole taps malfunctioning.

An object of the present invention is to propose a system that automatically detects leakage in water supply, other hot water piping, plant piping, etc. when unattended, issues an alarm signal, and stops the flow.

[Means for Solving the Problems] In order to achieve the above object, the present invention proposes a leakage monitoring system having the following configuration.

The liquid piping network is divided into multiple monitoring areas, and a flow rate sensor with a flow rate signal transmission function is installed in the piping upstream of each monitoring area, and the presence or absence of a monitor or consumer in the monitoring area is detected. A detection device with a monitoring signal transmission function is installed in the monitoring area, and when a signal indicating that a monitoring person or a consumer is present is inputted from the detector, the flow rate sensor is placed in a non-monitoring state, and on the contrary, it is determined that a monitoring person or a consumer is absent. A system that monitors leakage of liquid flowing through a piping network in each monitored area, and is equipped with a controller that enters a monitoring state when a signal is input.

[Operation] In the above system, if the detector continues to send a signal to the controller of the central monitoring center that the monitoring person or the consumer is at home, the flow rate sensor is placed in a non-monitoring state. If the detector sends a signal to the controller indicating that the monitor or customer is absent, the controller puts the flow sensor in the monitoring state, and if the flow rate signal is input, the controller will detect a leak. If it is determined that a faucet or the like has been closed, for example, an alarm is issued and a shutoff valve is closed at the same time, or an alarm is issued with a lamp or sound or both.

In addition, in high-rise apartment complexes, etc., to determine whether a person is home or not, a card reader may be attached to the entrance door and a signal may be input from there, or the locking and unlocking of the entrance door may be detected electrically. This signal may also be input.

If there are a plurality of card readers or entrance doors in a door, the system is placed in a non-monitoring state when a home signal is being transmitted.

[Example] Fig. 1 shows an example in which the system of the present invention is applied to a water pipe network in a high-rise apartment complex.

In the water supply piping network, 1 indicates the floor where the -dwelling unit is the monitored area, 2 is the kitchen, 3 is the bathroom, 5 is the entrance, and 6 is the entrance door.

7 is a water pipe, 8 is a branch water pipe branched from the water pipe 7, 9 is a kitchen water pipe, and 10 is a bathroom water pipe.

11 is a flow rate sensor with a flow rate signal transmission function attached to the branch water pipe 8, and 12 is a shutoff valve.

13 is a card reader attached to the door 6.

Reference numeral 14 denotes a controller installed in the manager's room, into which the flow rate signal from the flow rate sensor 11 and the home/absence signal from the card reader 13 are input, and at least the following controls are performed. .

(2) If a home signal is input from the card reader 13, the flow rate sensor 11 is placed in a non-monitoring state.

(2) If an out-of-home signal is input from the card reader 13, the flow rate sensor 11 is placed in a monitoring state.

■ Monitoring status (If a flow rate signal is input from the flow rate sensor 11, it is determined that a situation such as a leak or someone forgetting to close the faucet is occurring, and an alarm is issued, and at the same time, the shutoff valve 1
2 or issue only an alarm.

[Effects of the present invention] The present invention has the above-described configuration and operation, and has the following five effects.

a. In the monitoring state, if there is a water leak, etc., and a flow rate signal is input from the flow rate sensor, the controller issues an alarm, or closes the shutoff valve at the same time as this alarm, so if there is a water leak or a faucet has been forgotten to close, etc. We can deal with the situation immediately. Therefore, accidents related to water leakage will not increase.

b6 The system can be constructed at low cost using extremely simple equipment.

[Brief explanation of the drawing]

The figure is an explanatory diagram of the system of the present invention.

Claims (3)

[Claims] (1) The liquid piping network is divided into multiple monitoring areas, and a flow rate sensor with a flow rate signal transmission function is installed in the piping on the upstream side of each monitoring area, and the presence or absence of a monitor or consumer in the monitoring area is A detection device with a function of transmitting a monitoring signal of non-existence is installed in the monitoring area, and when a signal indicating that a monitoring person or a consumer is present is inputted from the detector, the flow rate sensor is placed in a non-monitoring state, and vice versa. A system that monitors leakage of liquid flowing through a piping network in each monitoring area, and is equipped with a controller that enters a monitoring state when a signal is input. (2) The controller is configured to issue an alarm signal and simultaneously close the cutoff valve or issue only an alarm signal when the controller determines that there is an abnormality, to prevent leakage of liquid flowing through the piping network as set forth in claim (1). A system that monitors each monitoring area. (3) Divide the water piping network into multiple monitoring areas, install a flow rate sensor with a flow rate signal transmission function in each monitoring area, and use a card reader or lock or unlock the door at the entrance/exit of each monitoring area. If a signal transmitter is installed and a signal from a card reader, lock/unlock signal transmitter, or at-home signal is being transmitted, the flow sensor is placed in a non-monitoring state.
A system for monitoring leakage of water flowing through a water pipe network for each pipe network according to claim (1), wherein the system is placed in a monitoring state when an out-of-home signal is being transmitted.