KR102039027B1 - Earthquake Damage Prevention System for High Pressure Gas and Chemical Facilities - Google Patents

Abstract

(E: 시설에 도달하는 지진파 세기, v: 지진파 속도, r: 진앙거리)The present invention relates to a system for protecting a facility handling chemicals from an earthquake, the configuration of which is characterized in that, one or more energy calculation to calculate the seismic wave speed by cumulative integration of the seismic wave, which is an acceleration waveform having an amplitude greater than a certain value during the period and Control station for managing the history by outputting the status information of the wired transmission device, the valve attached to the pipe through which the chemical flows to open and close the flow, and the status information measured in real time the state of the switchboard providing power for processing the chemical, the Energy calculation and wired transmission device and wired / wireless connection with the control station, relay station for transmitting the seismic wave speed, epicenter, epicenter information in real time, and valves and switchboards provided in the facility, wired / wireless Receive seismic velocity, epicenter and epicenter information from the relay station, Comprising a plurality of controllers for calculating the epicenter distance from the epicenter to the facility, calculating the strength of the seismic waves reaching the facility according to the following equation to output a signal for controlling the opening and closing of the valve and power supply to the switchboard; Is done.
(Mathematical formula)

(E: seismic intensity reaching the facility, v: seismic velocity, r: epicenter)

Description

Earthquake Damage Prevention System for High Pressure Gas and Chemical Facilities}

The present invention relates to a system for protecting a facility that handles chemicals harmful to the human body, and more specifically, to establish a controller for each device that regulates the flow of chemicals to prevent the leakage of chemicals by quickly blocking the flow of the chemicals during an earthquake. The present invention relates to an earthquake-prevention prevention system for high pressure gas and chemical facilities that prevents secondary damage.

An earthquake refers to the shaking of the ground, when the earth's crustal change occurs and the waves generated by the impact are transmitted to the earth's surface. In the last 50 years, there have been about 500 earthquakes of magnitude 7 or more in various parts of the world, and in December 2004, a 7.6 magnitude earthquake occurred in the Indonesian Sumatra sea area, causing 280,000 casualties. In Korea, there was a 4.8 magnitude earthquake that occurred in Pyeongchang on January 20, 2007, and a magnitude 5.1 and 5.8 earthquake occurred in Gyeongju, Gyeongsangbuk-do on September 12, 2016. It is greatly highlighted.

When such an earthquake occurs, based on the information obtained from seismographs set up by nations, universities, or research institutes throughout the country, the earthquake disaster alerts, National Disaster Safety Portal, and National Safety Bureau inform the earthquake occurrence information, and the Meteorological Agency issues an earthquake warning. It is recommended to broadcast (breaking) earthquake warnings through broadcast and media. Therefore, when an earthquake occurs, individuals or households will check and respond to the earthquake through disaster messages sent from television, radio, or the Internet and disaster management centers. If you do not send disaster texts, you will not be able to check the earthquake information, and it will be difficult to evacuate quickly. Moreover, when evacuating by checking the earthquake information, you will be embarrassed safely even if you do not know or know how to evacuate the earthquake. There is a problem that could not be taken or took a long time to evacuate.

In particular, when an earthquake is damaged in a facility (factory) that handles chemicals that are harmful to humans, there is a serious problem that large-scale damage occurs due to chemical leakage. Therefore, recently, as a way to solve this problem, Korean Patent Publication No. 10-1427176 (name of the invention: seismic adaptive water treatment remote control system) has been proposed. That is, seismic waves are detected and adaptively controlled valves of wastewater and sewage treatment systems in the field can minimize damage due to earthquakes.

However, since the magnitude of the seismic wave detection signal is calculated based on the three-axis acceleration signal provided by the three-axis acceleration sensor, it is highly likely to cause indiscriminate operation due to various variables. Blocking occurs at the same time and is not a preventive measure. That is, in addition to the energy waves generated from the strata, physical shocks generated from the outside may also be mistaken for earthquakes, causing various devices to stop operation.

Republic of Korea Patent Publication No. 10-1427176 (Name of the invention: remote control system for seismic adaptive water treatment)

Accordingly, the present invention is to fundamentally solve the conventional problems as described above, by receiving earthquake information from domestic and overseas stations installed by wire and wireless, reducing construction cost and improving accuracy, and then based on the received earthquake information. It is to provide an earthquake prevention system for high pressure gas and chemical facilities that can prevent the damage of human life and property by suppressing the operation of indiscriminate disaster system by calculating the magnitude of the earthquake that actually reaches the location and predicting the damage. There is this.

(E: 시설에 도달하는 지진파 세기, v: 지진파 속도, r: 진앙거리)In order to achieve the above object, the present invention is a system for protecting a facility that handles chemicals from earthquakes. One or more energy calculations and wires for cumulatively integrating seismic waves, which are acceleration waveforms having a predetermined value or more, over a period of time to calculate the seismic wave speed. A control device for managing the history by outputting status information of a transmission device, a valve attached to a pipe through which the chemical flows and opening / closing a flow, and a real-time measurement of the state of a switchboard providing power for processing chemicals, to the manager, and the energy. The relay station, which is connected to the calculation and wired transmission device and the control station by wire and wireless, transmits the seismic wave speed, epicenter, and epicenter information in real time, and is mounted on the valve and switchboard provided in the facility, and connected by wire and wireless. Receive seismic velocity, epicenter and epicenter information from the Comprising a plurality of controllers for calculating the epicenter distance from the epicenter to the facility from the ground information, calculating the intensity of the seismic waves reaching the facility according to the following equation to output a signal for controlling the opening and closing of the valve and power supply to the switchboard; Characterized in that made.
(Mathematical formula)

(E: seismic intensity reaching the facility, v: seismic velocity, r: epicenter)

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On the other hand, the terms or words used in the present specification and claims are not to be construed as limiting the ordinary or dictionary meanings, the inventors should use the concept of the term in order to explain the invention in the best way. It should be interpreted as meanings and concepts corresponding to the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, and various alternatives may be substituted at the time of the present application. It should be understood that there may be equivalents and variations.

As described in the above configuration and operation, the present invention reduces the construction cost by using the installed stations at home and abroad, improves the accuracy, and speeds up the energy calculation and wired transmission device by real-time transmission of earthquake information by wire or wireless. In particular, based on the received earthquake information, the magnitude of the earthquake actually reached to the current location can be calculated individually to control differentially according to the size and length of the facility, thus minimizing the damage caused by the earthquake and repairing. To provide the effect.

1 is a block diagram showing the overall system according to the present invention.
2 and 3 is a reference diagram showing a process of calculating the speed of the seismic wave by the energy calculation and wired transmission device of the present invention.
Figure 4 is a reference diagram showing the results of calculating the source and epicenter in the energy calculation and wired transmission apparatus according to the present invention.
5 is an explanatory diagram showing a process of calculating the intensity of an earthquake to be actually reached by the controller according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a system for protecting a facility for handling chemicals from earthquakes, the main configuration of the energy calculation and wired transmission device 10, the control station 20 and the relay station 30 and the controller 40 as shown in FIG. Earthquake damage prevention system for high pressure gas and chemical facilities. The system of the present invention can calculate the strength of the earthquake actually reached to the current location with the earthquake information transmitted from the energy calculation and the wired transmission device 10, and can differentially control it according to the size or length of the facility. The main point is to minimize the labor required for recovery.

First, the energy calculation and wireline transmission apparatus 10 according to the present invention measures the energy wave generated from the ground layer as shown in FIG. 1, and calculates the velocity of the seismic wave by calculating the measured energy. That is, the energy calculation and wired transmission device 10 integrates and transmits each of three waves of east / west, south / north and up / down measured from the seismometer as shown in FIG. And continue to transmit during the earthquake by integrating the minus part below a certain value.

Here, the energy calculation and wired transmission apparatus 10 measures the S-wave and the surface wave from the ground layer, and accumulates and integrates waves satisfying the set threshold value to calculate the seismic wave speed. That is, as shown in FIG. 3, only the case where a certain value is greater than a predetermined value in an acceleration waveform generated when an earthquake occurs, the red area value is transmitted first and then the green area value is transmitted. The received blocking device calculates the distance to the epicenter and predicts the seismic energy to be reached to block harmful substances if it is more than the seismic design. The energy calculation and wired transmission device 10 may derive the distance between the epicenter and epicenter according to the epicenter depth of the earthquake as shown in FIG.

In other words, the controller 40 determines that the energy of the earthquake that will reach the installed device from the received source and the magnitude of the earthquake is inversely proportional to the square of the distance from the source, as shown below.

And the energy is proportional to the velocity squared as

Although there are many variables in the above equation, it can be seen that the energy of the earthquake is inversely proportional to the speed as in the equation below.

Since the seismic wave is the value of the acceleration α of the seismograph, the speed can be known by integrating the seismic wave as shown in the following equation.

In other words, if you calculate the velocity and divide the distance divided by the distance as shown in the following equation, it can be used for seismic energy prediction.

Therefore, as shown in FIG. 3, the acceleration value of the seismic wave is integrated and transmitted only, and the minus part is integrated again and transmitted, and the earthquake information is continuously transmitted while the earthquake is repeated.

And the control station 20 according to the present invention measures the flow information of the chemicals handled on the facility as shown in Figure 1, and outputs the information to the manager to manage the history. That is, the control station 20 is attached to the pipe through which the chemical flows to measure in real time the state of the valve for opening and closing the flow, the switchboard for providing power to process the chemical. And it is connected to the energy calculation and wired transmission device 10 and wired or wireless through the relay station 30 to determine whether the earthquake in real time. The information is output as a video for the administrator to monitor in real time, and the text or video is transmitted to the manager's portable terminal in case of emergency. Of course, the control station 20 can remotely control the valve and switchboard as needed.

Subsequently, the relay station 30 according to the present invention is connected to the energy calculation and wired transmission device 10 and the control station 20 in a wired or wireless manner as shown in FIG. 1 to control the speed of the seismic wave, the latitude, the longitude, and the depth of the epicenter to the controller 40. Pass in real time. That is, the relay station 30 transmits the speeds of the seismic waves calculated by the energy calculation and the cable transmission apparatus 10, the derived epicenters and epicenters to the controllers 40 to be described later. The relay station 30 is preferably applied to the encryption technology to prevent forgery, it is preferable to use the Internet of Things dedicated RoLa network.

Lastly, the plurality of controllers 40 according to the present invention are installed for each device such as a valve or switchboard to control chemicals on the facility as shown in FIG. 1, and reach the current position receiving the seismic wave speed by wire or wireless. Control the flow of chemicals by calculating the strength of the earthquake. That is, the controller 40 calculates the true distance and the true distance using the Pythagorean trigonometry of the current position, the derived epicenter, and the epicenter, which are transmitted as shown in FIG. 5.

The epicenter distance is calculated using latitude and longitude without using the Pythagorean trigonometry because the controller 40 and the epicenter are on the surface. When the true distance and the true distance are calculated, the magnitude of the earthquake that will be reached by the controller 40 is calculated by squaring the received earthquake velocity divided by the true distance. When the calculated earthquake intensity meets the set threshold value, a signal for opening / closing the valve or cutting off the power is output. At this time, the threshold value is a value determined through simulation by the ratio of (speed / distance) ^ 2 using the seismic design value.

That is, even if an earthquake of magnitude 6.0 occurs in the energy calculation and wireline transmission device 10, the controller 40 attached to the valve located near the epicenter outputs a closed signal to block the flow of dangerous substances, and the distance from the epicenter is If there is no strength of the earthquake to reach far or below the threshold, a variable signal is maintained to keep the open signal or lower the flow. Therefore, it is possible to control the pipes of several kilometers by differential to block all valves at the same time in case of an earthquake, thereby preventing the problem of facility failure.

At this time, the controller 40 has three or more acceleration sensors embedded therein to sense energy waves generated from the ground or physical shocks generated from the outside. In other words, by calculating the signal by the acceleration sensor to calculate the strength of the earthquake to output a signal for opening and closing the valve or cut off the power. Therefore, even when the energy calculation and wired transmission device 10 or control center 20 and the relay station 30 is inevitably blocked, the earthquake independently detects an earthquake and outputs a signal for controlling the flow of chemicals.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

10: energy calculation and wired transmission device 20: control station
30: repeater 40: repeater

Claims (5)

In systems that protect facilities handling chemicals from earthquakes:
At least one energy calculation and wireline transmission device for accumulating and accumulating seismic waves, which are acceleration waveforms having an amplitude greater than or equal to a predetermined period, to calculate the seismic wave speed;
A control station attached to a pipe through which the chemical flows to control the history by outputting state information measured in real time on a state of a switchboard that provides a power for processing a chemical and a switchboard for processing chemicals;
A relay station connected to the energy calculation and wired transmission device and a control station in a wired / wireless manner and transmitting the seismic wave speed, epicenter, and epicenter information in real time; And,
Equipped with valves and switchboards provided in the facility, receiving seismic wave speed, epicenter and epicenter information from the relay station connected by wire / wireless, and calculating the epicenter distance from the epicenter to the facility by the following equation And a plurality of controllers for outputting signals for controlling the opening and closing of the valve and supplying power to the switchboard by calculating the strength of the seismic waves reaching the facility.
(Mathematical formula)

(E: seismic intensity reaching the facility, v: seismic velocity, r: epicenter) delete delete delete delete

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