RU86274U1 - DEVICE FOR AUTOMATED DETECTION OF PIPELINE GAPS IN THE SEWER SYSTEM - Google Patents

Abstract

A device for automated detection of pipeline ruptures in the sewage system, containing a program logic controller, an automated workstation in a local control room at a sewage pump station, a automated workplace in a central control room of a sewer system, pressure and flow sensors in pipelines, shut-off valves with electric drives for pipelines characterized in that the control of the flow of waste fluid is carried out in two or more than one while the pressure pipelines of the sewage pumping station are working, the pressure in the pressure pipelines is controlled with sectional valves open between the pressure pipelines, and the flow and pressure sensors are installed in the chambers at the beginning of the pressure pipelines.

Description

The utility model relates to a city sewerage system and is intended for the automated detection of integrity violations (ruptures) of pressure pipelines during their operation and prompt decision-making on localization and elimination of an emergency.

A device for detecting leaks in pipelines according to the patent of the Russian Federation No. 2233402, IPC F17D 5/02, 2002.

The principle of operation of this device is based on recording the time of arrival of two shock waves of reduced pressure generated at the time of local rupture or damage to the pipeline, at the ends of the controlled section of the pipeline, finding the difference in the time of arrival of these waves and determining the location of the leak.

The disadvantage of this device is that it contains a large set of special expensive equipment and uses a rather complicated technique to process the measurement results.

A device is known according to the patent of the Russian Federation No. 2302584, IPC F17D 5/02, 2006, which is selected as a prototype. This device contains a control point, at each end of the monitored section of the pipeline, a pressure transducer, an amplifier-converter and a valve control unit connected to the shutoff valve are connected in series, at the first end of the monitored section of the pipeline, a power source, a coil and relay contacts, a key, a computing unit and a transmitter that is connected to a power source through relay contacts, and a relay coil and a key controlling the input are connected in series to the positive terminal of the power source ohm is connected to the output of the amplifier-converter, and the output of the key is connected to the negative terminal of the power source, a code former, adder, phase manipulator, high-frequency generator, power amplifier and transmitting antenna are connected in series to the output of the computing unit.

The disadvantage of this device is the presence of sophisticated equipment and a special technique for determining the location of damage to the pipeline.

The inventive device allows you to control the flow of wastewater through two or more simultaneously operating pressure pipelines of a sewage pumping station and pressure control in pressure pipelines with open sectional valves between pressure pipelines. In this case, only flow and pressure sensors are used, which are installed in the chambers at the beginning of pressure pipelines.

Using the proposed device circuit allows to simplify the process of recording and processing changes in the hydrodynamic parameters of the fluid in the pressure pipe and thereby significantly reduce the decision time by the shift operator to eliminate the emergency situation.

Schematic diagram of a device for automated detection of a rupture of pressure pipelines in the sewage system (figure 1) includes the following elements:

1. Sewage pumping station (SPS).

2. The collector.

3. The pipeline number 1.

4. The pipeline number 2.

5. The pipeline number 3.

6. Programmable logic controller (PLC).

7. Automated workstation (AWS) at the local control room (TIR) at the control station.

8. Workstation of the dispatcher in the central control room (CDL) of the sewer system.

9. The flow sensor on the pipeline number 1.

10. The pressure sensor on the pipeline number 1.

11. The shut-off valve of the pipeline number 1.

12. The electric drive of the shut-off valve of the pipeline No. 1.

13. The flow sensor on the pipeline No. 2.

14. The pressure sensor on the piping No. 2.

15. The shut-off valve of the pipeline No. 2.

16. The electric drive of the shut-off valve of the pipeline No. 2.

17. The flow sensor on the pipeline number 3.

18. The pressure sensor on the pipeline No. 3.

19. The shut-off valve of the pipeline number 3.

20. The electric drive of the shut-off valve of the pipeline No. 3.

The proposed device allows to detect pipeline ruptures by simultaneously monitoring flow and pressure on 2 or more working pipelines (3, 4 and 5) and assessing differences in flow and pressure on the damaged (increased flow and reduced pressure) and not damaged (reduced flow) pipelines. In addition, this device eliminates the effect of throttling by shut-off and control valves from the SPS on the detection of a rupture of a pressure pipe.

To monitor and generate an alarm about a pipeline rupture, industrial flow control sensors (9, 13 and 17) and pressure sensors (10, 14 and 18) operated on pressure pipelines are used. The data of the measuring devices are processed in the PLC (block 6).

Information about a possible rupture of the pressure pipe is transmitted automatically from the PLC to the workstation of the shift operator in the MIS KNS (block 7) and to the central heating system of the sewer (block 8) via a fiber-optic communication line using an automated dispatch control and control system (ASKKU KNS) for pumping stations.

If, within the set time, the shift operator has not taken the necessary measures to eliminate the emergency situation, the controller generates a command to close the shut-off valve of the faulty pipeline (11, 15 or 19) and transfers it to the electric drive of the corresponding shut-off valve (12, 16 or 20).

Thus, the use of the proposed device circuit allows you to significantly reduce the decision-making time to eliminate an emergency situation and reduce the risks of uncontrolled emergencies in the sewer system.

Claims (1)

A device for automated detection of pipeline ruptures in the sewage system, containing a program logic controller, an automated workstation in a local control room at a sewer pump station, a automated workplace for a dispatcher in a central control room of a sewer system, pressure and flow sensors in pipelines, shut-off valves with electric pipelines characterized in that the control of the flow of waste fluid is carried out in two or more than one while the pressure pipelines of the sewage pumping station are working, the pressure in the pressure pipelines is controlled with open sectional valves between the pressure pipelines, and the flow and pressure sensors are installed in the chambers at the beginning of the pressure pipelines.