KR20020051168A - A diagnosing equipment for portable flame monitoring facilities - Google Patents

Abstract

PURPOSE: A movable diagnosis apparatus for a flame monitoring facility is provided to reduce the time and cost in the maintenance and perform the stable driving of the burner facility. CONSTITUTION: A movable diagnosis apparatus for a flame monitoring facility is composed of a power source(10), a frame scanner(20), an amplifier(30), and a state display(40). The power source(10) converts the input voltage into the required voltage and provides the converted voltage for each module. The flame scanner(20) detects the amount of ultraviolet ray spectrum from the flame with a detector installed in the field. The amplifier(30) amplifies the detected signal from the flame scanner to read the signal. The state display(40) indicates the facility condition according to the amplified signals with the indicator, an indicating lamp, and a digital display.

Description

A diagnosing equipment for portable flame monitoring facilities

The present invention relates to a device for monitoring and diagnosing a combustion state of a burner installed in a boiler used in a thermal power plant. More specifically, the operation state of the module and the scanner of the burner flame monitoring device is checked to check whether there is a normal state and a failure site. The present invention relates to a mobile flame monitoring system diagnostic apparatus which prevents a failure of a flame detection facility of a burner to prevent a problem in a boiler ignition or operation.

In general, burner ignition is performed after the BLR Purge and LPG solenoid valve (Sol V / V) is opened on the BMS control panel in the central control room with LPG supplied to the LPG so that the ignition transformer secondary voltage is about 10.000V. LPG is first ignited by the spark, and H / O Sol V / V and BNR Oil V / V Steam V / V are opened, so that the steam is at a high pressure. Radial injection from the gun (gun) is ignited in the furnace, the air register (air register), which is an air conditioner is opened to supply air.

When the burner of the boiler is ignited, the flame in the furnace is detected by the flame scanner and recognized as the final ignition.

As described above, a burner that generates a flame by igniting a mixed gas of air and fuel as a means of warming the water contained in the boiler body to a high temperature.

The burner is installed in the boiler main body (not shown), provided with a combustion chamber (1) on one side and a blowing means (not shown) for blowing air to the combustion chamber (1) on the other side as shown in FIG. Burner body 2; The nozzle mounting part 3 which penetrates and is installed in the center part is formed, and a plurality of air passage holes (not shown) through which air passes around the nozzle installation part 3 are formed, and the combustion chamber 1 is formed. A swirler 4 installed on an inner wall of the; After passing through the swirler 4, the fuel injection nozzle 5 is installed on the nozzle mounting portion 3 of the swirler 4 so that fuel and air are mixed.

In order to diagnose the combustion state of the burner configured as described above, when the burner installed in the boiler furnace supplies heat to the boiler using fuel such as coal, oil, and gas, the flame is transmitted through the image receiving unit due to the high temperature environment inside the boiler furnace. The image signal input to the CCD camera and the image signal input to the CCD camera outputs a flame diagnosis result through a neural network in the flame diagnosis determination unit, and the output state is displayed on a computer monitor.

However, up to now, it is difficult to judge the situation of the field in the control room because it is not easy to use the communication means between the site and the control room in the inspection due to the occurrence of the trouble of the flame monitoring equipment during the ordinary preventive maintenance. ) And the amplifier module cannot be individually tested during operation, so the inspection can be performed only after the burner is stopped, resulting in a decrease in efficiency. This requires the development of a tool that can be improved and installed individually. In other words, because the frame equipment, the central control room, and the BMS communicate with each other, the use of the radio in the control room may cause an accident due to a malfunction of the control card.

Therefore, it is difficult to reliably determine the location of the failure, it is difficult to communicate with each other because the communication device between the site and the control room is difficult to use, it takes a lot of diagnostic time, the individual test is difficult during operation and the problem of the diagnosis and recovery takes a lot of trouble.

Accordingly, the present invention was devised to solve the above-described problems, and by checking the operation state of the module and the scanner of the burner flame monitoring equipment to determine whether it is normal and the failure part, the failure of the burner flame detection equipment can be solved. The purpose is to provide a mobile flame monitoring system diagnostic equipment that prevents problems in the equipment during ignition or operation of the boiler.

Portable flame monitoring equipment diagnostic equipment of the present invention for achieving the above object,

A power supply unit converting an input voltage into a power required for each module and supplying the power;

A frame scanner which receives power from the power supply unit and detects an amount of ultraviolet spectrum from a flame through a detector installed at a site;

An amplifier for amplifying the signal detected by the frame scanner so as to be readable;

According to the signal amplified by the amplifying unit is characterized in that it comprises a status display unit for displaying the status of the equipment with an indicator, indicator and digital display.

1 is a schematic configuration diagram of a general burner;

Figure 2 is a block diagram of a mobile flame monitoring equipment diagnostic equipment according to the present invention.

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

10: power supply 20: frame scanner

30: amplification unit 40: status display unit

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

Mobile flame monitoring equipment diagnostic equipment according to the present invention, as shown in Figure 2, the power supply for converting the input voltage to the power required for each module and supplies; A frame scanner 20 which receives power from the power supply unit 10 and detects an amount of ultraviolet spectrum from a flame through a detector installed at a site; An amplifier 30 which amplifies the signal detected by the frame scanner 20 so as to be readable; In accordance with the signal amplified by the amplification unit 30 is configured with a status display unit 40 for displaying the status of the equipment with an indicator, an indicator, a digital display and the like.

Here, the flame monitoring system is a system for monitoring the flame state of the furnace ignited in each burner of the boiler, and is composed of a combination of an amplifier module in the control room and a frame scanner in the field, and the phototube of the frame scanner 20 is emitted from a general flame. It is a UV type that operates only in the ultraviolet spectrum, and detects the flame in the furnace and converts it into a current signal and outputs it to the input of the amplification unit 30.BNR trip and unit trip in case of malfunction of the flame monitoring facility and power failure It is an important facility that can lead to).

The mobile flame monitoring equipment diagnostic equipment according to the present invention configured as described above is AC 110V, which is the input power of the card, from the step-down transformer of the power supply unit 10 because AC (AC) 220V is currently used as a commercial power source in Korea. Thereafter, the frame scanner 20 is input to the frame scanner 20 to operate the frame scanner 20 at an output of AC 110V, thereby detecting the amount of the ultraviolet spectrum from the flame.

The amount of spectrum detected by the frame scanner 20 is converted into an input signal of the amplifying unit 30, and then displayed by an output of an indicator, an indicator, a digital display, and the like of the status display unit 40.

In detail, the DC 24V power supply 10 is used as a control power supply by supplying the output voltage DC 24V to the amplifier 30, the output voltage of the AC 110V power supply 10 is AC 110V is supplied to the field frame scanner 20 to power, operate the set and is used as the power of the phototube, the frame scanner 20 is a flame detection equipment installed in the field to detect the flame in the furnace and convert it into a current signal Then, it is supplied to the input of the amplifier 30.

The amplifier 30 operates an on-site indicator and an internal relay of the status display unit 40 having an input voltage of 110 V AC and an output of 4 to 20 mA, thereby turning on / off the frame scanner 20. It outputs the signal to BMS and has digital display display function and various parameter functions.

At this time, the amplification unit 30 is equipped with a card (Card) of the control panel to show the state of the equipment on the status display unit (40).

Status display unit 40 located on the front of the equipment reads the health of the test card and the frame scanner 20, and if the failure immediately replaces the card or scanner to stabilize the system.

If there is a problem with this equipment during use, short-circuit the fuse installed in the front so that it does not affect the installation.

In addition, a jack is provided on the front to record the necessary information during the test so that it can be read more precisely.

As an important function of the present invention operating as described above, by detecting the flame state in the boiler furnace in real time and digitally displayed through the status display unit 40 in the control room amplification unit 30, it is possible to check at a glance, that is, BMS boiler In conjunction with the management system plays an important role in boiler ignition.

In addition, the present invention can individually test the operating conditions of the card and the field scanner of the burner flame monitoring equipment in the field and the control room, so that it is possible to distinguish and confirm the normal operation of the device and the failure site, and also to check the size. It is a mobile test tool (Test Tool) manufactured to have a width of 44 cm and a width of 14 cm and a width of 25 cm.

On the other hand, as a precaution when handling the equipment according to the present invention, use a rated voltage, and excessive shock to the equipment may cause damage to the internal electronic components, so the shock should be avoided. Equipment should be kept away from moisture and direct sunlight.

The field of application of the present invention is used for facility diagnosis of the Ulsan thermal power plant 1.2.3 unit burner flame detection device, and the application method of the present invention includes a rapid diagnosis and maintenance in case of trouble during operation of the facility during current preventive maintenance, WSS, which is used to diagnose card and frame scanner health during weekend stoppages, and to inspect card and frame scanners during planned preventive maintenance work.

In addition, as a means of utilizing other establishments, it is possible to use them at the same facility installation establishment among flame monitoring facilities of domestic thermal power plants.

As described in detail above, the mobile flame monitoring equipment diagnostic apparatus according to the present invention improves the diagnosis method of the existing primitive equipment to diagnose the fault more quickly and accurately. It is possible to diagnose and maintain by using the manufactured equipment, and it is easy to use as this equipment is easy to use, and it contributes to the stable operation of the burner flame facility by prompt cause analysis and recovery when trouble occurs in the burner flame facility. And a short time and many types of effects appear, due to the stable operation of the burner facility can greatly contribute to preventing the delay and stop the boiler operation, it can be used in other power plants equipped with the same equipment has a high utilization effect.

Therefore, it is possible to diagnose the control card and to simplify the structure, and to visually identify the display unit, thereby allowing the movement of the site freely, and the operation and handling are easy.

Although the invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

Claims (2)

A power supply unit 10 converting an input voltage into a power required for each module and supplying the power; A frame scanner 20 which receives power from the power supply unit 10 and detects an amount of ultraviolet spectrum from a flame through a detector installed at a site; An amplifier 30 which amplifies the signal detected by the frame scanner 20 so as to be readable; Mobile flame monitoring equipment diagnostic equipment comprising a status display unit 40 for displaying the status of the equipment in accordance with the signal amplified by the amplification unit 30, such as indicators, indicators and digital displays. The method of claim 1, The power supply unit 10, The output voltage of DC 24V is used as a control power supply by supplying DC 24V to the amplification unit 30, the output voltage of AC 110V is AC 110V, the mobile type, characterized in that configured to be supplied to the frame scanner 20 power of the field Flame Monitoring System Diagnostic Equipment.