JPH0932099A - Vacuum sewer system monitoring equipment - Google Patents

Abstract

(57) [Abstract] [Problem] An abnormal condition can be immediately detected by providing an air flow detecting means in a ventilation pipe or a breather pipe on the ground.
(EN) Provided is a monitoring device for a vacuum type sewer system which enables quick treatment and easy maintenance. SOLUTION: Sewage discharged from a building is stored in a sewage mist, and this sewage is absorbed by a water suction pipe 23 provided in front of a vacuum valve 22 that opens and closes a vacuum sewage pipe 24, and passes through the vacuum sewage pipe 24. A monitoring device for a vacuum type sewer system that collects the vacuum valve at the vacuum pumping station, which is a vacuum valve of the system.
Air flow detecting means 14 for detecting the flow of air in the ventilation pipe 11 for supplying air to the vacuum valve unit 20 in which
When the detection signal output from the air flow detection means 14 continues for a preset time or longer, the vacuum valve unit 2
Anomaly detection means 1 for outputting an anomaly signal notifying of anomaly 0
3 and 3 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring device for a vacuum sewer system for collecting wastewater discharged from a building.

[0002]

2. Description of the Related Art Conventionally, there is a vacuum sewer system as one of the methods for collecting wastewater discharged from a building, and a monitoring device is used to maintain and manage this system in a normal state. For example, in Japanese Examined Patent Publication No. 6-84640, the closed state duration and the open state duration of the valve of the vacuum valve are measured from the detection signal output from the valve open / closed state detection means provided in the vacuum valve, and the closed state is determined. Monitoring of a vacuum type waste water collecting device provided with an abnormality detecting means for outputting a vacuum valve abnormality signal when the duration exceeds a predetermined set time or when the open state duration exceeds the predetermined set time The device is described.

[0003]

However, in the monitoring device described in Japanese Patent Publication No. 6-84640, the vacuum valve body is provided with an abnormality detecting means to detect the operation of the valve of the vacuum valve. Therefore, there is a problem that only the malfunction of the valve can be detected as an abnormality. Also, since the vacuum valve is installed in the dirty water tank, it is necessary to open the manhole cover and put an operator inside to carry out the work for maintenance and inspection of the abnormality detecting means. Further, there is a problem that a signal must be transmitted through the ground from the detecting means to the monitoring device.

The present invention has been made by paying attention to the above-mentioned problems, and an object of the present invention is to solve these problems and to provide a ventilation pipe on the ground or a breather pipe. By providing the air flow detection means, it is possible to immediately detect an abnormality, to enable quick treatment, and to provide a monitoring device for a vacuum sewer system that can be easily maintained.

[0005]

In a monitor for a vacuum sewer system according to the present invention, an air flow for detecting a flow of air is provided in a ventilation pipe for supplying air to the vacuum valve unit in which a vacuum valve of the system is housed. A detection means and an abnormality detection means for outputting an abnormality signal notifying an abnormality of the vacuum valve unit when the detection signal output from the airflow detection means continues for a preset time or more. To do.

[0006]

In the monitoring apparatus for the vacuum sewer system according to the present invention, the air flow detecting means for detecting the air flow in the ventilation pipe for supplying the air to the vacuum valve unit in which the vacuum valve of the system is housed, and this air flow. Since the abnormality detection means for outputting an abnormality signal notifying the abnormality of the vacuum valve unit when the detection signal output from the detection means continues for a preset time or longer, the vacuum valve fails and the valve is If it remains open or if a vacuum leak occurs in the vacuum valve unit, an abnormality can be immediately detected, a monitoring device is installed on the top of the ventilation pipe on the ground, and the air flow detection means is the ventilation pipe, Alternatively, since it is provided inside the breather pipe, it is not necessary to perform it in an underground manhole as in the conventional case, and quick treatment is possible, and inspection and maintenance can be easily performed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of a monitoring device of a vacuum sewer system according to the present invention. In FIG. 1, the monitoring device of the vacuum sewer system is a ventilation part 1 installed upright on the ground.
0 and a vacuum valve unit 20 installed in the basement, which communicates with the ventilation part 10.

A ventilation pipe 11 and a breather pipe 12 are erected adjacently to the ventilation part 10, and an abnormality detecting means 13 and an air flow detection are provided in the ventilation pipe 11 below a ventilation head 16 provided at the top. An air flow sensor 14 as a means is provided. Reference numeral 15 denotes a plurality of vent holes provided around the upper part of the vent pipe 11.

A waste water inlet pipe 25 is drawn into the waste water tank 21 of the vacuum valve unit 20 buried underground. A suction pipe 23 for sucking the sewage flowing in from the sewage inflow pipe 25 is provided in the sewage water tank 21, and the suction pipe 23 is connected to a vacuum sewage pipe 24 via a vacuum valve 22. Reference numeral 26 is a sewage detection pipe provided to detect the water level of the sewage in the sewage tank 21.

FIG. 2 is a detailed view of the portion A of FIG. FIG.
In the above, the ventilation pipe 11 is communicated with the inside of the sewage tank 21 of the vacuum valve unit 20 described above, and enters into the ground from about 1 m below the ventilation port 15 and bends at a substantially right angle to reach the sewage tank 21. are doing.

When the vacuum valve 22 in the sewage tank 21 shown in FIG. 1 is opened, or when a vacuum leak occurs from the vacuum valve 22 in the vacuum valve unit 20 or the vacuum pipeline, a negative pressure is generated in the vacuum valve unit 20. , The air is sucked in through the vent 15,
Air is sent into the vacuum valve unit 20 through the air flow sensor 14 provided as the air flow detection means. This time,
A so-called ventilation signal is transmitted from the airflow sensor 14 to the abnormality detecting means 13.

When the vacuum valve 22 is closed or the vacuum leakage of the vacuum valve unit 20 is stopped, the air flow in the ventilation pipe 11 is stopped, and at the same time, the ventilation signal is turned off. When the vacuum valve unit 20 is in a normal state, the vacuum valve 2
The ventilation signal is turned on for about 4 to 5 seconds when 2 operates.

However, if the vacuum valve 22 remains open or if a vacuum leak occurs in the vacuum valve unit 20, air is continuously sucked through the ventilation port 15, so the ventilation signal also remains ON, which indicates an abnormality. To be judged. At this time, the abnormality detecting means 13 is configured to notify the outside that an abnormality has occurred.

FIG. 3 is a perspective view of the airflow sensor shown in FIG. 2. When the airflow from the upper side to the lower side of the airflow sensor 14 is generated, the fan 1 provided below the airflow sensor 14 will be described.
4a will rotate. The rotation of the fan 14a causes the dynamo 14 connected to the rotation shaft of the fan 14a.
Electric power is generated by b, and this electric power is sent as a ventilation signal to the abnormality detection means 13 via the signal line 14c.

FIG. 4 is a perspective view showing another example of the air flow sensor. In FIG. 4, the air flow sensor 24 includes an operating plate 2
4a is provided so as to be rotatable in a substantially horizontal direction. The operating plate 24a is provided with a spring 24d on the rotating shaft so that the operating plate 24a can always maintain a substantially horizontal direction.

In the airflow sensor 24, as in the above-described embodiment, when air flows downward from above, the operating plate 24a provided so as to project in a substantially horizontal direction resists the reaction force of the spring 24d. And is rotated downward as shown by the arrow. A magnet 24b is attached to the front of the operating plate 24a, and a reed switch 24c vertically installed downwardly.
Approach.

Due to the approach of the magnet 24b, the reed switch 24c is turned on, and the abnormality detecting means 13
Is transmitted to When there is no air flow, the operating plate 24a
Is restored in the horizontal direction by the restoring force of the spring 24d. By returning the operating plate 24a to the horizontal position, the reed switch 24c moves away from the magnet 24b.
It is turned off and is transmitted to the abnormality detecting means 13.

[0018]

In the vacuum sewer system monitoring apparatus of the present invention, an air flow detecting means for detecting the flow of air is provided in a ventilation pipe for supplying air to the vacuum valve unit in which the vacuum valve of the system is housed. If the detection signal output from the air flow detection means continues for a preset time or more, an abnormality detection means for outputting an abnormality signal notifying the abnormality of the vacuum valve unit is provided. If the valve remains open or if a vacuum leak occurs in the vacuum valve unit, an abnormality can be immediately detected, a monitoring device is installed on the top of the ventilation pipe on the ground, and the air flow detection means is connected. Since it is installed inside the trachea or breather tube, there is no need to perform it in an underground manhole as in the past, and quick treatment is possible, and inspection and maintenance are easy. That. Therefore, it is suitable as a monitoring device for a vacuum sewer system.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a monitoring device of a vacuum sewer system of the present invention.

FIG. 2 is a detailed view of part A of FIG.

FIG. 3 is a perspective view of the airflow sensor shown in FIG.

FIG. 4 is a perspective view showing another example of an airflow sensor.

[Explanation of symbols]

Claims (1)

[Claims] 1. A sewage discharged from a building is stored in a sewage mist, and the sewage is absorbed by a water suction pipe provided at the end of a vacuum valve for opening and closing the vacuum sewage pipe, and the vacuum pump is passed through the vacuum sewage pipe. A monitoring device for a vacuum sewer system for collecting on-site, an air flow detecting means for detecting an air flow in a ventilation pipe supplying air to the vacuum valve unit in which a vacuum valve of the system is housed, and the air flow. An abnormality detecting means for outputting an abnormality signal indicating an abnormality of the vacuum valve unit when the detection signal output from the detecting means continues for a preset time or longer. Monitoring equipment.