KR20140039107A - Gas supply control system and method thereof - Google Patents

Abstract

The present invention relates to a gas supply control system and a method thereof. The system receives measurement guidelines of gas lines from a home gas meter, a district manostat, and an area manostat, receives the pressure, flow velocity, and flow rate of gas inside the piping between the district manostat and the area manostat from a first sensor, and receives the pressure and temperature value of gas inside the piping between the area manostat and the home gas meter from a second sensor, so that a control unit can control the pressure of the gas inside the piping when the pressure of gas inside the piping among the home gas meter, the district manostat, and the area manostat is not within the reference pressure value range. In addition, the gas supply control system can provide information on the gain or loss of measurement or information on gas leakage using the measurement information, and can provide information on the state of a piping network and a differential flow. Also, the gas supply control system allows a user to select a certain pipe to check the piping network analysis pressure value thereof while seeing the overall piping network diagram. [Reference numerals] (110) District manostat (meter); (120) Large demand value meter (AMR); (140) Area manostat (meter); (160) Home gas meter; (170) Control unit; (180) Storage unit; (190) Input unit; (200) Display unit; (AA) Remote pressure/flow velocity/flow rate/differentiation measuring gauge; (BB) Medium pressure; (CC) Valve release pipe; (DD) Valve; (FF) Pressure/flow velocity/flow rate/differential flow state value; (GG,EE) Order a pressure control signal value; (HH,LL) Measurement guidelines/SCADA data; (II) Piping information; (JJ) Remote pipe end pressure/temperature gauge (demand value); (KK) Low pressure; (MM) Pressure/temperature value; (NN) SAP reading data; (OO) Situation room

Description

[0001] Gas supply control system and method [

The present invention relates to a city gas supply system, and more particularly, to a gas supply control system and method.

Generally, city gas is supplied to urban consumers through a pipe network. Urban gas is more convenient than other fuels, cleaner, and has a high combustion efficiency, so demand for home / heating / cooling and industrial use is expanding considerably. The city gas is stored in a gas tank (KOGAS) with a considerable capacity to cope with fluctuations in demand.

Gas piping is a pipeline that transports gas supplied from a gas tank to a gas plant in a home or factory through a local city gas supply facility and is made of cast iron or steel. Depending on the type, the gas is transported under a certain pressure by low pressure supply, medium pressure supply or high pressure supply.

As such, the city gas should be supplied to the consumers so that they can be used at a constant pressure. Therefore, the city gas is supplied to the gas supply facility (static pressure facility) to adjust the pressure to the end use. In the case of a wide supply area or a long distance transportation, high pressure is used to efficiently transport a large amount of gas. However, when a customer directly uses city gas, it is mainly used at a low pressure. The decompression through the regulator ensures that the set pressure in use is maintained.

In this way, it is very important to keep the pressure of the city gas supplied and supplied constantly regardless of the demand amount in the process of transporting and supplying the city gas. The regulator performs the role of maintaining the gas pressure constant in the process of supplying the city gas.

These regulators include earth regulators and local regulators.

The earth regulator serves to transfer the gas transported by the city gas supplier to a number of regional regulators, and maintains a relatively high pressure of 0.1 MPA to 1 MPA.

The local regulator supplies the gas sent from the earth regulator to each household and maintains a relatively low pressure of 1.0KPA to 2.5KPA.

However, it is very difficult to control the pressure regulator so as to maintain the pressure of the city gas constantly in anticipation of the constant consumption of the consumers, and various techniques have been proposed for this purpose, but this is not a proper solution.

On the other hand, the gas leakage problem of the city gas is very important, and it is important to verify or prevent the gas leakage in advance.

In addition, conventionally, there is no way of knowing information about the piping network, and management is inconvenient.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a gas supply control system for providing gas leakage information as well as metering gain or loss information using metering information, System and method.

According to an aspect of the present invention, there is provided a gas supply control system,

At least one household meter for supplying city gas to each household, detecting and outputting a city gas metering instruction;

At least one local regulator for supplying the city gas to the household meter through the gas piping, detecting and outputting a measuring instruction of the gas inside;

At least one earth regulator for supplying the city gas transported by the city gas supply company through the gas piping to the regional regulator, detecting and outputting a measuring instruction of the internal gas;

A first sensor unit for detecting and outputting a pressure, a flow rate, and a flow rate of the inner city gas between the earth reverberator and the local reverberator;

A second sensor unit for detecting and outputting the pressure and temperature of the city gas in the piping between the local regulator and the household meter;

A storage unit for storing city gas piping information of a predetermined area and a gas reference pressure value range in the city gas piping;

A display unit for displaying information;

An input unit for selecting information;

Wherein the control unit receives the metering instruction value of the home meter, the earth regulator, and the local regulator, and the output value of the first sensor unit and the second sensor unit, and compares the measured value with the reference pressure value range of the storage unit, A control unit for controlling the display unit to calculate and display a metering gain and a loss between the home meter, the earth transformer, and the local transformer;

At least one first pressure regulator for regulating a gas pressure in the geostationary regulator under the control of the control unit;

And at least one second pressure regulator for regulating the gas pressure in the local pressure regulator under the control of the control unit.

The control unit estimates a gas leakage state from a metering gain and a loss between the domestic meter, the earth rectifier and the local rectifier, and displays the gas leakage state on the display unit.

The control unit receives the pressure, flow rate, and flow rate value from the first sensor and displays the differential state on the display unit.

The control unit displays the distribution state of the pipe network on the display unit, and displays the pressure, differential state, metering gain and loss of the pipe at the selected position on the display unit when the position of the pipe is selected by the input unit.

In order to solve such a problem, a gas supply control method according to a feature of the present invention,

Receiving the metering instructions of the city gas from the household meter, the earth transformer and the local transformer;

Receiving a pressure, a flow rate, and a flow rate value of the inner city gas from the first sensor unit between the earth regulator and the local regulator;

Receiving a pressure and temperature value of the city gas inside the piping between the local regulator and the household meter from the second sensor unit;

Determining whether the gas pressure of the piping between the household meter, the earth regulator, and the local regulator is within a reference pressure value range;

And controlling the gas pressure in the gas pipe to be within the reference pressure value range when the gas pressure of the pipe between the domestic meter, the earth constant pressure regulator and the local regulator is not within the reference pressure value range.

The method comprises:

And the control unit calculates and displays the metering gain and loss between the home meter, the earth transformer, and the local transformer, and displaying the measured gain and loss on the display unit.

The method comprises:

The control unit further includes a step of estimating a gas leakage state from the metering gain and loss between the household meter, the earth rectifier and the local rectifier, and displaying the gas leakage state on the display unit.

The method comprises:

The controller may further include receiving the pressure, flow rate, and flow rate value from the first sensor unit and displaying the differential state on the display unit.

The method comprises:

The control unit displays the distribution status of the pipe network on the display unit.

And displaying the pressure, differential state, metering gain and loss of the pipe at the selected position on the display unit when the position of the pipe is selected by the input unit.

In the embodiment of the present invention, not only metering gain or loss information but also gas leakage information can be provided using metering information, and pipe network status information and differential flow state information can be provided.

Also, while viewing the entire piping network, arbitrary piping can be selected to view pipe network analysis pressure values.

1 is a configuration diagram of a gas supply control system according to an embodiment of the present invention.
Fig. 2 is a view showing the arrangement of the earth governor and the local governor.
3 is a flowchart of a gas supply control method according to an embodiment of the present invention.
4 is a view showing an example of a pressure management screen for each pressure regulator.
5 is a diagram showing an example of the entire metering management screen.
6 is a graph showing pressure at a selected point in a real-time pipe network analysis screen.
7 is a graph showing a flow rate of a selected point in a real-time pipe network analysis screen.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

1 is a configuration diagram of a gas supply control system according to an embodiment of the present invention.

1, a gas supply control system according to an embodiment of the present invention includes an input unit 190, a household meter 160, a local transformer 140, a geomagnetic transformer 110, a first sensor unit 130, A display unit 200, a controller 170, a first pressure regulator 210, and a second pressure regulator 220. The second sensor unit 150 includes a display unit 200, a storage unit 180, a display unit 200,

The input unit 190 may be a keyboard, a mouse, a keypad, or the like as a means for inputting information by an operator or a person in charge of the situation room.

The household meter 160 is attached to the passage of the city gas piping supplied to each household, and detects the city gas metering instruction and outputs it to the control unit 170. Such meter reading data may be SAP meter reading data.

The local pressure regulator 140 supplies the city gas to the domestic meter 160 through the gas pipeline and detects the internal gas metering instruction and outputs it to the controller 170. Such meter reading data may be SCADA data.

The earth regenerator 110 supplies the city gas transported by the city gas supplier to the local regulator 140 through the gas pipe, detects the internal gas metering instruction, and outputs the guide to the control unit 170. Such meter reading data may be SCADA data.

The arrangement of the household meter 160, the local transformer 140, and the earth transformer 110 is shown in FIG.

Fig. 2 is a view showing the arrangement of the earth governor and the local governor.

Referring to FIG. 2, one earth governor 110 supplies city gas to a plurality of local governors 140, and each local governor 140 supplies city gas to a plurality of household meters 160 . Here, the city gas is described, but it can be applied to other kinds of gases such as LPG and LNG.

The first sensor unit 130 detects the pressure, flow rate, flow rate, and differential value of the inner city gas between the earth regulator 110 and the local regulator 140 and outputs the detected pressure, flow rate, flow rate and differential value to the controller 170, And the like.

The second sensor unit 150 detects the pressure and temperature value of the city gas in the piping between the local regulator 140 and the household meter 160 and outputs the detected pressure and temperature value to the controller 170. The second sensor unit 150 includes a gauge or a sensor .

The storage unit 180 stores the city gas pipeline information of the predetermined area and the gas reference pressure value range in the city gas pipeline. For example, the reference pressure range value of the earth constantifier 110 is maintained at a relatively high pressure of 0.1 MPA to 1 MPA, and the reference pressure range value of the local pressure adjuster 140 is maintained at a relatively low pressure of 1.0 to 2.5 KPA Can be determined. At this time, the reference pressure range value may be adjusted depending on the temperature and the volume by reflecting factors such as temperature and volume.

The display unit 200 may be a display device, and various types of monitors such as an LCD, a PDP, and a CRT may be used.

The first pressure regulator 210 regulates the gas pressure in the geostationary governor 110 under the control of the controller 170. For this purpose, the first pressure regulator 210 may be installed adjacent to the earth regulator 110.

The second pressure regulator 220 regulates the gas pressure in the local regulator 140 under the control of the controller 170. For this purpose, the second pressure regulator 220 may be installed adjacent to the local pressure regulator 140.

The control unit 170 receives the metering instruction values of the home meter 160, the earth transformer 110 and the local transformer 140 and the output values of the first sensor unit 130 and the second sensor unit 150, And controls the gas pressure in the gas pipe to be within the reference pressure value range and controls the gas pressure in the gas pipe between the domestic meter 160 and the earth constant current transformer 110 and between the local constant current transformer 140 And controls the display unit 200 to display the measured gain and loss.

The control unit 170 estimates the gas leakage state from the metering gain and loss between the home meter 160, the earth transformer 110 and the local transformer 140, and controls the display unit 200 to display the gas leakage state.

The control unit 170 receives the pressure, flow rate, and flow rate value from the first sensor unit 130 and displays the differential state on the display unit 200.

The control unit 170 displays the distribution state of the pipe network on the display unit 200 and displays the pressure, differential state, metering gain and loss of the pipe at the selected position, when the position of the pipe is selected by the input unit 190 And display it on the display unit 200.

Hereinafter, the operation of the gas supply control system according to the embodiment of the present invention will be described.

3 is a flowchart of a gas supply control method according to an embodiment of the present invention.

Referring to FIG. 3, the control unit 170 receives the metering instructions of the city gas from the household meter 160, the earth transformer 110, and the local transformer 140 (S301).

The control unit 170 receives the pressure, flow rate, and flow rate value of the inner city gas between the earth regulator 110 and the local regulator 140 from the first sensor unit 110, 150 and the pressure of the city gas inside the piping between the local regulator 140 and the household meter 160 (S302).

Next, the control unit 170 determines whether the piping pressure of the domestic meter, the earth regulator, and the local regulator is within the reference pressure value range (S303).

If the pipe pressure is not within the reference pressure value range, the control unit controls the gas pressure in the gas pipe to fall within the reference pressure value range (S305). For example, when the current pressure is 0,9 kpa as shown in Fig. 4, the pressure is adjusted to be between 1.0 and 2.5, and the pressure after the adjustment is 1.5.

Then, the controller 170 calculates a gain and loss of metering between the home meter, the earth transformer, and the local transformer, and displays the measured gain and loss on the display unit 200 (S304).

In addition, the controller 170 determines whether the gas leaks above the reference leakage amount from the metering gain and loss between the household meter, the earth regulator, and the local regulator (S306).

In the gas leakage state, the control unit 170 displays a warning on the display unit 200 or warns the user in other ways (S307).

For example, referring to FIG. 5, it is determined that there is no gas leakage between the local reductor 140 and the earth reverberator 110 when the earth reverberator tally amount is 100 and the local reverberator tide amount is 100, And the customer meter reading amount of the household meter 160 is 60, it is judged that there is a gas leak of 40 percent between the local inverter 140 and the household meter 160.

The reference leakage amount, which is a criterion for the gas leakage, is determined by reflecting various factors such as the length and thickness of the gas pipe, but it is required to be corrected according to temperature and pressure. do.

Then, the controller 170 selects a menu (S308) and displays the distribution status of the pipe network on the display unit 170 (S309). An example of this is shown in FIG. 6, and the current pressure is shown in FIG.

According to the selection of the menu, the controller 170 receives the pressure, flow rate, and flow rate value from the first sensor unit 130 and displays the differential state on the display unit 200, If the position of the pipe is selected by the controller 170, the controller 170 displays the pressure, differential state, metering gain and loss information of the pipe at the selected position (S310). An example of this is shown in Figure 7, where the current flow rate is shown.

Various displays are possible for such display, and the pressure, differential state, metering gain and loss information of the pipe at the corresponding position can be displayed at once, if necessary.

The embodiments of the present invention described above are not only implemented by the apparatus and method but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded, The embodiments can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (9)

At least one household meter for supplying city gas to each household, detecting and outputting a city gas metering instruction;
At least one local regulator for supplying the city gas to the household meter through the gas piping, detecting and outputting a measuring instruction of the gas inside;
At least one earth regulator for supplying the city gas transported by the city gas supply company through the gas piping to the regional regulator, detecting and outputting a measuring instruction of the internal gas;
A first sensor unit for detecting and outputting a pressure, a flow rate, and a flow rate of the inner city gas between the earth reverberator and the local reverberator;
A second sensor unit for detecting and outputting the pressure and temperature of the city gas in the piping between the local regulator and the household meter;
A storage unit for storing city gas piping information of a predetermined area and a gas reference pressure value range in the city gas piping;
A display unit for displaying information;
An input unit for selecting information;
Wherein the control unit receives the metering instruction value of the home meter, the earth regulator, and the local regulator, and the output value of the first sensor unit and the second sensor unit, and compares the measured value with the reference pressure value range of the storage unit, A control unit for controlling the display unit to calculate and display a metering gain and a loss between the home meter, the earth transformer, and the local transformer;
A first pressure regulator for regulating a gas pressure in the geostationary regulator under the control of the control unit;
And at least one second pressure regulator for regulating the gas pressure in the local pressure regulator under the control of the control unit. The method of claim 1,
Wherein the control unit estimates a gas leakage state from the metering gain and loss between the household meter, the earth rectifier, and the local rectifier, and displays the gas leakage state on the display unit. 3. The method of claim 2,
Wherein the control unit receives the pressure, flow rate, and flow rate value of the pipe from the first sensor and displays the differential state on the display unit. The method of claim 3,
Wherein the control unit displays the distribution state of the pipe network on the display unit and displays the pressure, differential state, metering gain and loss of the pipe at the selected position on the display unit when the position of the pipe is selected by the input unit. Supply control system. Receiving the metering instructions of the city gas from the household meter, the earth transformer and the local transformer;
Receiving a pressure, a flow rate, and a flow rate value of the inner city gas from the first sensor unit between the earth regulator and the local regulator;
Receiving a pressure and temperature value of the city gas inside the piping between the local regulator and the household meter from the second sensor unit;
Determining whether the gas pressure of the piping between the household meter, the earth regulator, and the local regulator is within a reference pressure value range;
Controlling the gas pressure in the gas pipe to be within the reference pressure value range when the gas pressure of the pipe between the domestic meter, the earth constant pressure regulator and the local regulator is not within the reference pressure value range, . 6. The method of claim 5,
And controlling, by the control unit, calculating and displaying metering gains and losses between the household meter, the earth pressure regulator, and the local pressure regulator on the display unit. The method according to claim 6,
Further comprising the step of estimating and displaying the gas leakage state from the metering gain and loss between the household meter, the earth rectifier and the local rectifier, and displaying the gas leakage state on the display unit. 8. The method of claim 7,
Wherein the control unit receives the pressure, flow rate, and flow rate value of the pipe from the first sensor unit and displays the differential state on the display unit. 9. The method of claim 8,
Displaying the distribution status of the pipe network on the display unit;
And if the position of the pipe is selected by the input unit, the control unit further comprising displaying the pressure, differential state, metering gain and loss of the pipe at the selected position on the display unit.

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