KR200388511Y1 - Apparatus for managing pressure of gas equipment - Google Patents

Abstract

The present invention measures the pressure in a gas facility such as a constant pressure chamber that maintains a constant pressure of the gas supplied to the gas user, and transmits the measured pressure data of the gas to a management server or other industrial machine. The present invention relates to a device that performs an operation of sending a signal to cut off a gas supply or generate an alarm when an allowable range is exceeded. The present invention stores the gas pressure data measured at the gas facility for a long time and transmits the stored gas pressure data to the gas facility management server, and generates an alarm signal when the gas pressure data measured at the gas facility is abnormal. To ensure safe and efficient gas installations.

Description

A device for managing pressure in a gas facility

The present invention relates to a device for measuring and managing the gas pressure of a gas facility, and more particularly, to measure the pressure of a gas in a gas facility such as a gas pressure vessel chamber, store the measured gas pressure data, and store the measured gas pressure. The present invention relates to a device for transmitting data to a management server or other industrial machine, and outputting a signal to cut off the gas supply or generate an alarm when the measured gas pressure exceeds an allowable range.

Generally, city gas is supplied to city consumers through a pipeline network. City gas has a very large demand for home / air conditioning and industrial use due to its easy handling, cleanliness, and high combustion efficiency compared to other fuels. Stored and supplied. Gas piping is a passage for transporting gas supplied from a gas tank to a gas appliance in a consumer's home or factory through a local city gas supply facility, and is a pipe made of cast iron or steel, etc. The gas is transported by a constant pressure such as low pressure supply, medium pressure supply or high pressure supply.

In this way, since the city gas is always supplied at a constant pressure for use by the consumer, the city gas supply facility (static pressure facility) is adjusted to medium pressure, low pressure, etc. to the end use destination. In the case of a large supply area or in the case of long distance transportation, high pressure is used to efficiently transport a large amount of gas, but when the consumer uses the city gas directly, the high pressure is mainly used at low pressure. Relief pressure is maintained to maintain the set pressure on use.

As such, the process in which the city gas is supplied to the end use place through the gas pipe at high pressure, medium pressure, or low pressure is always supplied within a set allowable pressure range, and thus the pressure state of the city gas supply and use facility such as a constant pressure chamber. Should be continuously monitored through a separate pressure measurement recording device.

A conventional analog pressure recorder is installed in a gas facility to record the measured pressure data on a recording sheet as shown in FIG. However, since the recording paper used in the conventional analog pressure recording has a short maximum recordable period, it is troublesome that the manager of the gas facility needs to change the recording paper at any time. In addition, since the administrator must directly read all the pressure data recorded on the recording paper, there is a problem that it takes a lot of time as it is difficult to accurately analyze the long-term pressure data. In addition, since the conventional recording paper records the pressure data using a water-based pen or the like, it is difficult for an administrator to accurately read the pressure data recorded on the recording paper as ink bleeding occurs when the analog pressure recorder is installed in a wet area. There is also a problem. In addition, the conventional analog pressure recorder has a problem that occurs when the ink of the recording pen is exhausted until the pressure data cannot be recorded on the recording paper. It is also difficult to store and manage the recorded pressure data for a long time.

In addition, the conventional magnetic pressure recorder has a inconvenience of having to wind the mainspring at least once every 7 days because it operates for up to 200 hours when the main winding is wound once.

In addition, the conventional analog pressure recorder is a problem when more accurate data is required because the individual reading results may be different when reading the recorded pressure data.

On the other hand, if city gas is supplied to the final customer through the gas pipe and the pressure set to high pressure, medium pressure, or low pressure is unstable, the gas is leaked or a problem occurs in the gas facility. To prevent this, it is essential to not only measure pressure and manage pressure data, but also notify facility managers of detected risks more quickly. In addition, there is an urgent need for a device that shuts off the gas supplied for safety when the gas pressure state is abnormal in the gas facility.

In addition, when a gas explosion occurs in a factory or residential area where gas is handled or used, there is a possibility that the surrounding factories or residential areas may spread to large-scale accidents, and thus the safety of gas equipment is urgently required. In the case of handling hazardous materials such as city gas, there is a risk of explosion, so explosion-proof to prevent explosion in a hazardous area is a very important task because gas facilities where explosive gas can always exist.

In addition, the use of electrical / electronic equipment, such as laptops or PDAs, in hazardous areas is limited, and the pressure on the gas facility is high because of the inconvenient backup of information on site, such as problems with managers' use of electrical / electronic equipment. There was no easy way to manage data. In addition, it is not easy to operate electrical / electronic equipment because the manager feels the psychological burden of checking pressure data through electrical / electronic equipment such as a laptop or PDA in a gas facility where there is a high risk of gas exposure or gas explosion. Frequently they can't.

Therefore, when storing the pressure data measured in the gas facility, there has been a great demand for a device for safely and simply transmitting the stored data to the management device of the gas facility.

The present invention has been made to solve the problems of the prior art as described above, by providing a device that can measure the pressure in the gas facility, store the measured gas pressure data and transmit it to the management device of the gas facility to efficiently Its purpose is to manage.

In addition, an object of the present invention is to provide a device for transmitting the pressure data measured in the gas facility in real time or periodically to the management device of the gas facility.

In addition, the present invention is to generate an alarm data to notify the case of the occurrence of an abnormality in the gas pressure in the gas facility, and to send a signal to the device to block the gas.

In addition, the present invention continuously measures the gas pressure data in the gas facility, and receives the time data from the GPS satellites to store the pressure data of the correct time in the memory or to manage the gas facility when an abnormal occurrence is detected as the measured pressure data It is an object of the present invention to provide an apparatus for promptly notifying an administrator.

In order to achieve the above object, a gas pressure measuring unit for measuring the pressure data of the gas in the gas facility in the apparatus for measuring and managing the gas pressure in the gas facility according to an embodiment of the present invention-the pressure data is an average value Includes a minimum, instantaneous, or maximum value; A storage unit for sampling the measured pressure data according to a set sampling period and storing the sampled data; A control unit which determines whether the pressure state of the gas facility is in an abnormal state according to a result of comparing the pressure data with predetermined reference pressure data, and performs a control operation accordingly; And a signal output unit for outputting an alarm signal to block the gas supplied to the gas facility or to generate an alarm to the manager.

In addition, the apparatus for measuring and managing the gas pressure of the gas facility according to another embodiment of the present invention is a gas pressure measuring unit for measuring the pressure data of the gas in the gas facility-the pressure data is the average value, minimum value, instantaneous value or Includes at least one of a maximum value; A storage unit for sampling the measured pressure data according to a set sampling period and storing the sampled data; A control unit which determines whether the pressure state of the gas facility is in an abnormal state according to a result of comparing the pressure data with predetermined reference pressure data, and performs a control operation accordingly; And a transmission unit converting the pressure data into a current / voltage signal and transmitting the pressure data to the management server of the gas facility.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of an apparatus for measuring and managing the gas pressure in a gas facility, such as a gas constant pressure chamber according to the present invention.

2 is a view showing the configuration of a device for measuring and managing the pressure of the gas facility according to an embodiment of the present invention, the digital pressure recording device 200 is a power source 211, input unit 212, display unit ( 213, clock unit 214, gas pressure measuring unit 215, control unit 216, storage unit 217, alarm generation unit 218, signal output unit 219, GPS transceiver 220, and The external interface unit 221 is included.

Referring to FIG. 2, the digital pressure recording device 200 is designed by a designer to be a pressure-resistant explosion-proof structure, a pressure explosion-proof structure, a safety-increased explosion-proof structure, an inflow explosion-proof structure, or an intrinsically safe explosion-proof structure according to the installation place or scale.

Since the digital pressure recording device 200 may have a different degree of risk depending on the installation location of the gas facility, an explosion-proof structure for each of the components 211 to 221 according to the grade of the danger zone according to whether the installation location is dangerous. You can also do differently.

Hazardous areas are areas where explosive mixed gases may or may be present and require special precautions to avoid the possibility of causing ignition if electrical equipment is installed in hazardous areas. (Zone) and temperature classification (Temperature Classification).

The gas group is classified as flammable gas according to the purpose of ignition and is I (Methan), IIA (Propane), IIB (Ethylene), and IIC (Hydrogen, Acethylene).

The zones are graded according to the potential for potential explosions. The zones are divided into Zone 0, Zone 1, and Zone 2. The 0 zone is an area where explosive mixed gas is always present or is present for a long time at least 1,000 hours (more than 1,000 hours / year) per year, and the first zone is 10 to 1000 per year when the explosive mixed gas is normally operated. It is an area that is likely to exist in an hour or so (10 to 1,000 hours / year), and the second area is an area in which an explosive gas mixture is generally not generated but is likely to exist for a very short time.

The temperature rating is the rating of the device under a potentially explosive environment based on the maximum permissible surface temperature the instrument can reach because it can ignite the explosive mixed gas by the temperature energy generated by the components of the instrument. The temperature rating is less than 450 ℃ for T1, 300 ~ 200 ℃ for T2, 200 ~ 135 ℃ for T3, 135 ~ 100 ℃ for T4, 100 ~ 85 ℃ for T5, T6 If it is 85 degrees C or less.

The pressure-resistant explosion-proof structure includes a component that may be an ignition source, for example, a component having a risk of sparking, arcing, or overheating in a sealed structure container, even if an external explosive gas enters the inside and explodes. Is to withstand the pressure and not to break. The pressure-proof explosion-proof structure is designed so that even if a gas is leaked out due to high heat or high pressure between the junction gap of the container, it is cooled so that ignition may not spread to the external explosive gas.

The pressure explosion-proof structure is designed to prevent explosive gas or vapor from entering the container by injecting a protective gas (for example, fresh air or non-combustible gas) into the container to maintain the internal pressure.

The safety increased explosion-proof structure is designed to increase the degree of safety especially for mechanical, electrical structure or temperature rise in order to prevent the occurrence of electric sparks, arcs, or high temperature parts that will be ignition sources for explosive gas or steam during normal operation. to be.

The inflow-explosion-proof structure is a structure that is designed so as not to be lowered into the explosive gas or vapor present on the oil surface in the place where the electric flame, arc or high temperature occurs in the oil.

The intrinsically safe explosion proof structure is a structure confirmed by the ignition test that it is not ignited by explosive gas or vapor by battery spark, arc, or high temperature generated during normal and accident (for example, disconnection, short circuit, ground fault). The intrinsically safe explosion-proof structure is intended to limit the electrical energy or thermal effects under normal or abnormal conditions causing ignition in a potentially explosive environment, and only use equipment approved for use in a Hazardous Area. The intrinsically safe explosion-proof structure can be divided into one that can be used in all areas of the first to second areas or can be used only in the first area and the second area according to the grade. The intrinsically safe explosion-proof structure is a special protection device, which requires minimum cost because no insulation fuses, armored cables, and special cable glands are required, and it can be used without certification if it is a simple part, even if a problem occurs in the cable or part. Does not affect. In addition, since the intrinsically safe explosion-proof structure uses a very low voltage and current, there is no fear of electric shock by the intrinsically safe wiring, so that repair can be performed even when the power is on. In addition, the intrinsically safe explosion-proof structure has a variety of advantages as an explosion-proof structure that can be used only in the 0 area.

The power supply unit 211 supplies power required for the operation of the digital pressure recording device 200. The power supply unit 211 receives AC power and converts the power into DC power of a size suitable for the digital pressure recording device 200 and supplies the power to the operating power of the digital pressure recording device 200, or supplies the power by a battery.

The input unit 212 includes various keys for adjusting functions required for the operation of the digital pressure recording apparatus 200 from the manager, and generates key data corresponding to the key input from the manager and provides the key data to the controller 216. When the input unit 212 receives a key for various data display functions from an administrator, the input unit 212 generates key data corresponding to the setting of the display function and provides the key data to the control unit 216. When the input unit 212 receives a key for the stored pressure data backup function from the manager, the input unit 212 generates key data corresponding to the setting and provides the key data to the controller 216. The input unit 212 includes a display function key for displaying the pressure data displayed on the display unit 213 in response to a predetermined period of time.

For example, if the display function key assumes that a basic display function displays pressure data for one week, the digital pressure recording apparatus 200 performs the following display operation. The digital pressure recording device 200 displays the pressure data for one week through the display unit 213 according to a graph method when the display function key is input once through the input unit 212, for example. In addition, when the display function key is input twice through the input unit 212, the digital pressure recording device 200 displays the pressure data for two weeks through the display unit 213 according to a graph method. In addition, when the display function key is input three times through the input unit 212, the digital pressure recording apparatus 200 displays the pressure data for one month through the display unit 213 according to a graphic method. The operation of the display function key can be changed by design or setting.

The display unit 213 displays various guide messages according to the operation of the digital pressure recording device 200. The display unit 213 displays the pressure data measured according to the gas pressure measuring function as shown in FIG. 9. When the pressure data is displayed, the display unit 213 basically displays data with three or more decimal places and three decimal places as shown in FIG. 9, but the number of digits is displayed according to the display unit of the pressure data at the request of an administrator. You can also change the display. When the digital pressure recording apparatus 200 detects an error of the gas facility according to the gas pressure measuring function, the display unit 213 displays alarm data corresponding thereto as shown in FIG. 10. The display unit 213 displays the pressure data only for a set time in order to reduce power consumption, and does not display if no additional input signal is detected during the set time. The display time may be set by an administrator through a setting function key provided in the input unit 212, and the display function may be turned on or off by an administrator through an on / off function key provided in the input unit 212. Can be. These settings can also be set through the program.

The clock unit 214 generates various clocks necessary for the operation of the digital pressure recording device 200, and each component that requires the clock when the digital pressure recording device 200 operates the generated clock. To supply.

The gas pressure measuring unit 215 measures gas pressure data in the gas pipe at the gas facility, respectively. The pressure data includes average, minimum, instantaneous or maximum values. Gas pressure measurement unit 215 includes a pressure sensor as shown in Figure 4 for measuring the pressure data, which will be described in more detail below. The gas pressure measuring unit 215 may measure pressure data of various places through several sensors in measuring the pressure data. The gas pressure measuring unit 215 may calibrate the pressure sensor to meet the standard of the standard pressure gauge when it is different from the pressure data measured by the pressure data standard pressure gauge. The pressure sensor maintains the corrected data regardless of power on / off. The gas pressure measuring unit 215 periodically measures the pressure data by a sampling method as shown in FIG. 7.

The controller 216 controls the overall operation of the digital pressure recording device 200. The controller 216 basically controls the gas pressure measuring unit 215 so that the pressure is automatically measured by a programmed method. The controller 216 may compare the gas pressure data measured by the gas pressure measuring unit 215 with the allowable range data (reference pressure data) by referring to the allowable range data for the gas pressure stored in the storage unit 217. As shown in FIG. 2, the alarm generator 218 is controlled by determining whether an alarm is generated. The controller 216 determines that the gas pressure data is in an abnormal state with respect to the gas pressure when the gas pressure data exceeds the allowable range data, and controls the alarm generator 218 to generate alarm data. If the allowable range data is not exceeded, the alarm generator 218 is controlled so as not to generate alarm data.

The storage unit 217 stores various data necessary for the overall operation of the digital pressure recording apparatus 200. As illustrated in FIG. 5, the storage unit 217 stores the allowable range of the gas pressure of the gas pipe, which is allowed according to the type of the gas pipe or the type of the gas supplied through the gas pipe. The storage unit 217 stores the sampling time, sampling frequency or recording interval data of the gas pressure data as shown in FIG. 7. The storage unit 217 stores the gas pressure data measured by the gas pressure measuring unit 215 or the alarm data generated by the alarm generating unit 218 as shown in FIG. 8. The storage unit 217 stores the gas pressure data measured according to the sampling method as shown in FIG. 7 under the control of the controller 216.

The alarm generator 218 generates alarm data when the gas generator is in an abnormal state with respect to the gas pressure under the control of the controller 216.

The signal output unit 219 generates an alarm signal when the gas facility is in an abnormal state under the control of the controller 216 to output a signal to the manager or to immediately block the gas supplied to the gas facility.

The GPS transmitter / receiver 220 transmits the alarm data to the manager's portable communication terminal for the gas facility and receives time data from the GPS satellites.

The external interface unit 221 interfaces with an external device for accessing the pressure data and the alarm data stored in the storage unit 217. The external interface unit 221 may include a serial communication port, a universal serial bus, an infrared data association (IrDA) method, a USB memory, an XD memory, an MMC memory, and an RS-MMC. It supports any one or more of the memory, SMC memory, memory stick, memory stick duo, CF card, or SD card memory slot method. The external interface unit 221 may include an input unit when a storage medium such as a UBS memory, an XD memory, an MMC memory, an RS-MMC memory, an SMC memory, a memory stick, a memory stick duo, a CF card, or an SD card memory is connected. When key data corresponding to the backup request is input through 212, the pressure data and the alarm data stored in the storage unit 217 are automatically sent to the storage medium.

3 is a view showing the configuration of a device for measuring and managing the pressure of the gas facility according to an embodiment of the present invention, the digital pressure recording device 300 is a power supply unit 311, input unit 312, display unit ( 313, the clock unit 314, the gas pressure measurement unit 315, the control unit 316, the storage unit 317, the alarm generator 318, the transmitter 319, the GPS transceiver 320, and an external device The interface unit 321 is included.

Referring to FIG. 3, the digital pressure recording device 300 is designed by a designer to be a pressure resistant explosion proof structure, a pressure explosion proof structure, a safety increase explosion proof structure, an inflow explosion proof structure, or an intrinsically safe explosion proof structure according to an installation place or scale. Since the digital pressure recording device 300 may have a different degree of risk depending on the installation location of the gas facility, as described above, each of the components 311 to 321 according to the grade of the hazardous area depending on whether the installation location is dangerous. Explosion proof structure for) may be different.

The power supply unit 311 supplies power required for the operation of the digital pressure recording device 300. The power supply unit 311 receives AC power and converts the power into DC power of a size suitable for the digital pressure recording device 300 and supplies the power to the operating power of the digital pressure recording device 300, or supplies power by a battery.

The input unit 312 includes various keys for adjusting functions required for the operation of the digital pressure recording apparatus 300 from the manager, and generates key data corresponding to the key input from the manager and provides the key data to the controller 316. When the input unit 312 receives a key for various data display functions from an administrator, the input unit 312 generates key data corresponding to the setting of the display function and provides the key data to the control unit 316. When the input unit 312 receives a key for the stored pressure data backup function from the manager, the input unit 312 generates key data corresponding to the setting and provides the key data to the controller 316. The input unit 312 includes a display function key that can display the pressure data displayed on the display unit 313 in response to a predetermined period of time.

For example, if the display function key assumes that a basic display function displays pressure data for one week, the digital pressure recording apparatus 300 performs the following display operation. The digital pressure recording device 300 displays the pressure data for one week through the display unit 313 according to a graph method when the display function key is input, for example, once through the input unit 312. In addition, when the display function key is input twice through the input unit 312, the digital pressure recording device 300 displays the pressure data for two weeks through the display unit 313 according to a graph method. In addition, when the display function key is input three times through the input unit 312, the digital pressure recording device 300 displays the pressure data for one month through the display unit 313 in a graphic manner. The operation of the display function key can be changed by design or setting.

The display unit 313 displays various guide messages according to the operation of the digital pressure recording device 300. The display unit 313 displays the pressure data measured according to the gas pressure measuring function as shown in FIG. 9. When the pressure data is displayed, the display unit 313 basically displays data with three or more decimal points and three decimal places as shown in Fig. 9, but the number of digits is displayed according to the display unit of the pressure data at the request of an administrator. It can also be changed and displayed. When the digital pressure recording device 300 detects an error of the gas facility according to the gas pressure measuring function, the display unit 313 displays alarm data corresponding to the same as shown in FIG. 10. The display unit 313 displays the pressure data only for a set time in order to reduce power consumption, and does not display if no additional input signal is detected during the set time. The display time may be set by an administrator through a setting function key included in the input unit 312, and the display function may be turned on or off by an administrator through an on / off function key provided in the input unit 312. Can be. These settings can also be set through the program.

The clock unit 314 generates various clocks necessary for the operation of the digital pressure recording device 300, and each component that requires the clock when the digital pressure recording device 300 operates the generated clock. To supply.

The gas pressure measuring unit 315 measures gas pressure data in the gas pipe at the gas facility, respectively. The pressure data includes average, minimum, instantaneous or maximum values. Gas pressure measuring unit 315 includes a pressure sensor as shown in Figure 4 for measuring the pressure data, which will be described in more detail below. The gas pressure measuring unit 315 may measure pressure data of various places through several sensors in measuring the pressure data. The gas pressure measuring unit 315 may calibrate the pressure sensor to meet the standard of the standard pressure gauge when the pressure data is different from the pressure data measured by the pressure data standard pressure gauge. The pressure sensor maintains the corrected data regardless of power on / off. The gas pressure measuring unit 315 periodically measures the pressure data by a sampling method as shown in FIG. 7.

The controller 316 controls the overall operation of the digital pressure recording device 300. The controller 316 basically controls the gas pressure measuring unit 315 so that the pressure is automatically measured by a programmed method. The control unit 316 compares the gas pressure data measured by the gas pressure measuring unit 315 with the allowable range data (reference pressure data) by referring to the allowable range data for the gas pressure stored in the storage unit 317. As shown in FIG. 2, the alarm generation unit 318 is controlled by determining whether an alarm is generated. The control unit 316 controls the alarm generating unit 318 to generate alarm data by determining that the gas pressure data exceeds the allowable range data to be an abnormal state with respect to the gas pressure, and allowing the gas pressure data to allow the alarm data. If the range data is not exceeded, the alarm generator 318 is controlled so as not to generate alarm data.

The storage unit 317 stores various data necessary for the overall operation of the digital pressure recording device 300. The storage unit 317 stores the allowable range of the gas pressure of the gas pipe, which is allowed according to the type of the gas pipe or the type of the gas supplied through the gas pipe as shown in FIG. 5. The storage unit 317 stores the sampling time, sampling frequency or recording interval data of the gas pressure data as shown in FIG. 7. The storage unit 317 stores the gas pressure data measured by the gas pressure measuring unit 315 or the alarm data generated by the alarm generating unit 318 as shown in FIG. 8. The storage unit 317 stores the gas pressure data measured according to the sampling method as shown in FIG. 7 under the control of the controller 316.

The alarm generating unit 318 generates alarm data when the gas pressure is in an abnormal state under the control of the controller 316.

The data transmission unit 319 transmits the pressure data and the alarm data as shown in FIG. 8 to a management server (not shown) of the digital pressure recording device 300. The data transmitter 319 may transmit the pressure data and the alarm data to the management server of the digital pressure recording apparatus 300 whenever the pressure data and the alarm data are generated, or may transmit the data stored in the storage 317 every predetermined time.

The data transmitter 319 may transmit the pressure data stored in the storage unit 317 to the management server of the digital pressure recording apparatus 300 at every predetermined period under the control of the controller 316, and the gas facility is abnormal. If the alarm data is generated as a state, it may be immediately transmitted to the management server of the digital pressure recording device 300. The data transmitter 319 converts the pressure data into a 4-20 mA / 1-5 V current / voltage signal and transmits the pressure data to a management server, another industrial machine (PLC), and a distributed control system (DCS) of the gas facility.

The GPS transceiver 320 transmits the alarm data to the manager's portable communication terminal for the gas facility and receives time data from the GPS satellites.

The external interface unit 321 interfaces with an external device for accessing the pressure data and the alarm data stored in the storage unit 317. The external interface unit 321 may include a serial communication port, a universal serial bus, an infrared data association (IrDA) method, a USB memory, an XD memory, an MMC memory, and an RS-MMC. It supports any one or more of the memory, SMC memory, memory stick, memory stick duo, CF card, or SD card memory slot method. The external interface unit 321 may include an input unit when a storage medium such as UBS memory, XD memory, MMC memory, RS-MMC, SMC memory, memory stick, memory stick duo, CF card, or SD card memory is connected. When key data corresponding to the backup request is input through 312, the pressure data and the alarm data stored in the storage unit 317 are automatically sent to the storage medium.

4 is a diagram illustrating a configuration of a gas pressure measuring unit according to an embodiment of the present invention, wherein the gas pressure measuring units 215 and 315 may include a pressure sensor 410, an amplifier 420, and an analog / digital converter 430. ).

Referring to FIG. 4, the pressure sensor 410 detects a pressure to be monitored in a gas facility. The amplifier 420 amplifies the pressure signal sensed by the pressure sensor 410. The analog / digital converter 430 converts the amplified pressure signal into pressure data. The pressure data may vary in precision depending on the sensitivity of the pressure sensor 410.

5 is a view showing an allowable range for the gas pressure according to an embodiment of the present invention.

Referring to FIG. 5, the digital pressure recording apparatus 200 or 300 regards the lower limit data as 2.4 kg / cm 2 when the pressure data is, for example, the allowable range is 2.4 to 7 kg / cm 2, and the upper limit data is 7 kg / cm 2. It is determined that the pressure data falls within the range of the lower limit data and the upper limit data.

6 is a view showing whether or not an alarm occurs by the pressure data measured in the digital pressure recording apparatus according to an embodiment of the present invention.

2 to 6, the digital pressure recording apparatus 200 and 300 periodically measures the pressure of the gas pipe through the gas pressure measuring units 215 and 315 and stores the measured data in the storage units 217 and 317. ). The digital pressure recording apparatus 200 or 300 compares the measured data through the controllers 216 and 316 with reference data in the allowable range as shown in FIG. 5 to determine whether an alarm occurs. For example, when the pressure data is 5.12 kg / cm 2, such as P11, the controllers 216 and 316 do not generate an alarm as included in the allowable range (2.4 to 7 kg / cm 2) for the pressure data. For example, when the pressure data is 1.6 kg / cm 2, such as P22, the controllers 216 and 316 generate an alarm as they are not included in the allowable range (2.4 to 7 kg / cm 2) for the pressure data.

7 is a view showing data set for measuring the gas pressure in the digital pressure recording apparatus according to an embodiment of the present invention.

2, 3, and 7, the digital pressure recording apparatus 200, 300 includes a sampling time for measuring the pressure of the gas in the gas pressure measuring units 215 and 315 in the storage units 217 and 317. The data corresponding to the number of samplings or the recording interval are stored respectively. When the digital pressure recording apparatus 200 or 300 continuously measures the pressure of the gas through the gas pressure measuring unit 215 or 315, the digital pressure recording apparatus 200 or 300 corresponds to the sampling time, the sampling frequency, or the recording interval. The data may be stored in the storage units 217 and 317 according to the data. The digital pressure recording device 300 manages a gas facility through the data transmission unit 319 based on the pressure data stored in the storage unit 317 according to the sampling time, the sampling frequency, or the data corresponding to the recording interval. It can also be sent to the management server.

8 is a view showing the pressure data and the alarm data by the result of measuring the gas pressure in the digital pressure recording apparatus according to an embodiment of the present invention.

2 to 8, the digital pressure recording apparatus 200 and 300 stores the pressure data measured by the gas pressure measuring units 215 and 315 together with the measured time data in the storage units 217 and 317, respectively. do. When the digital pressure recording apparatus 200 or 300 determines that the gas pressure is in the normal range according to the result of comparing the pressure data with the reference data by the control unit 216 or 316, the alarm generating unit 218 or 318 responds thereto. Generate alarm data. When the digital pressure recording apparatus 200 or 300 determines that the gas pressure is out of the normal range according to the result of comparing the pressure data with the reference data by the control unit 216 or 316, the alarm generating unit 218 or 318 Generate corresponding alarm data.

9 is a diagram illustrating a screen displaying pressure data according to an embodiment of the present invention.

Referring to FIG. 9, the pressure data display screens 910 and 920 are screens for displaying the pressure data measured by the digital pressure recording apparatus 200 or 300 through a display unit.

When the gas pressure measuring unit 215 or 315 includes a plurality of pressure sensors and measures more pressure data, the display screens 910 and 920 display the plurality of pressure data measured by the gas pressure measuring unit 215 or 315. Is displayed through the display means according to the measured time.

The digital pressure recording apparatus 200 or 300 may display the display screens 910 and 920 for pressure data only through the display means for a predetermined time in order to reduce power consumption. In addition, the digital pressure recording apparatus 200 or 300 may display the pressure data display screens 910 and 920 when there is a display request from the administrator.

10 is a diagram illustrating a screen displaying alarm data according to an embodiment of the present invention.

Referring to FIG. 10, the alarm data display screens 1010 and 1020 display alarm data generated when the pressure data measured by the digital pressure recording device exceeds an allowable range of reference data. Is a screen displayed with the measured time or the time when the alarm data was generated.

According to the present invention, the apparatus digitally stores the gas pressure data measured at the gas facility, converts the measured pressure data into a current / voltage signal, and transmits the gas pressure data to the gas facility management server. More efficient management.

In addition, according to the present invention, when the device detects an abnormality in the gas pressure, it is possible to safely manage the gas facility by outputting a signal to cut off the gas supply or to generate an alarm.

In addition, according to the present invention, the device can continuously measure the gas pressure data, receive the time data from the GPS satellite to store the measured gas pressure data in the memory at the correct time zone or transmit the abnormality of the gas facility to the management server. .

Although the present invention as described above has been described by way of limited embodiments and drawings, the present invention is not limited to the above embodiments, which are those skilled in the art to which the present invention belongs, various modifications and Modifications are possible. Therefore, the present invention should be identified only by the utility model registration claims described below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

1 is a diagram showing gas pressure data recorded by a conventional analog pressure recorder.

2 is a view showing the configuration of a device for measuring and managing the pressure of the gas facility according to an embodiment of the present invention.

3 is an apparatus for measuring and managing the pressure of a gas facility according to another embodiment of the present invention

4 is a view showing a configuration diagram of a gas pressure measuring unit according to an embodiment of the present invention.

5 is a view showing an allowable range for the gas pressure according to an embodiment of the present invention.

6 is a view showing whether the alarm is generated by the pressure data measured in the pressure measurement management apparatus of the gas facility according to an embodiment of the present invention.

7 is a view showing data set for measuring the gas pressure in the pressure measurement management apparatus of the gas facility according to an embodiment of the present invention.

8 is a view showing the pressure data and the alarm data by the result of measuring the gas pressure in the pressure measurement management apparatus of the gas facility according to an embodiment of the present invention.

9 is a diagram illustrating a screen displaying pressure data according to an embodiment of the present invention.

10 is a diagram illustrating a screen displaying alarm data according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

200, 300: digital pressure recording device

211 and 311: power supply unit 212 and 312: input unit

213 and 313: display unit 214 and 314: clock unit

215, 315: gas pressure measuring unit 216, 316: control unit

217, 317: storage unit 218, 318: alarm generating unit

219: signal output unit 319: transmission unit

220, 320: GPS transceiver 221, 321: external interface unit

410: pressure sensor 420: amplifier

430: analog / digital converter

Claims (10)

In the apparatus for measuring and managing the gas pressure of the gas facility, A gas pressure measuring unit measuring pressure data of a gas in the gas facility, the pressure data including any one or more of an average value, a minimum value, an instantaneous value, or a maximum value; A storage unit for sampling the measured pressure data according to a set sampling period and storing the sampled data; A control unit which determines whether the pressure state of the gas facility is in an abnormal state according to a result of comparing the pressure data with predetermined reference pressure data, and performs a control operation accordingly; And Signal output unit for outputting a signal to cut off the gas supplied to the gas facility or to generate an alarm to the manager, Gas pressure management device, characterized in that designed in explosion-proof structure. In the apparatus for measuring and managing the gas pressure of the gas facility, A gas pressure measuring unit measuring pressure data of a gas in the gas facility, the pressure data including any one or more of an average value, a minimum value, an instantaneous value, or a maximum value; A storage unit for sampling the measured pressure data according to a set sampling period and storing the sampled data; A control unit which determines whether the pressure state of the gas facility is in an abnormal state according to a result of comparing the pressure data with predetermined reference pressure data, and performs a control operation accordingly; And It includes a transmission unit for converting the pressure data of the gas or alarm data for informing the abnormal state of the gas facility into a current / voltage signal and transmits to the management server or other industrial machine of the gas facility, Gas pressure management device, characterized in that designed in explosion-proof structure. The method according to claim 1 or 2, And a GPS transceiver for transmitting the alarm data to a portable communication terminal of a manager for the gas facility and receiving time data from a GPS satellite. The method according to claim 1 or 2, And an external interface unit for performing an interface with an external device for accessing the recorded pressure data or the alarm data. The external interface unit may include a serial communication port, a serial serial bus, an infrared data association (IrDA) method, a USB memory, an XD memory, an MMC memory, and an RS-MMC. And an SMC memory, a memory stick, a memory stick duo, a CF card, or an SD card memory slot. The method according to claim 1 or 2, And the control unit compares the pressure data with reference pressure data and determines that the pressure data is an abnormal state with respect to the gas pressure when the pressure data exceeds an allowable range for the pressure data. The method according to claim 1 or 2, The gas pressure management device further comprises an alarm generating unit for generating the alarm data when the control unit determines that the abnormal state with respect to the gas pressure. The method according to claim 1 or 2, Further comprising a display unit for displaying the pressure data or the alarm data, The display unit gas pressure management device, characterized in that for displaying the pressure data in the form of a graphic or a graph. The method of claim 1, The controller controls the signal output unit when it is determined that the pressure state of the gas pipe is abnormal to cut off the gas supplied to the gas pipe. The method of claim 2, And the control unit controls the transmitter to periodically transmit the pressure data of the gas, and controls the transmitter to transmit the alarm data when the pressure state of the gas facility is abnormal. The method of claim 2, The transmitter converts the pressure data into a current / voltage signal of 4-20 mA / 1-5 V and transmits the pressure data to a management server, another industrial machine (PLC), or a distributed control system (DCS) of the gas facility. Gas pressure management device.