JP2779770B2 - Dust collector management system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management system for a dust collector which catches dust generated from an electric furnace factory by a dust collector and discharges only purified air.

[0002]

2. Description of the Related Art FIG. 1 shows an outline of a dust collector of a building in an electric furnace factory. In the building A, an electric furnace B and a preheater C for heating scrap metal supplied to the electric furnace by using waste heat of the electric furnace B are housed. The dust collecting device D is transported through a plurality of suction hoods E1, E2, E3,... (Hereinafter, simply referred to as E when collectively referred to) mounted above the building for sucking dust generated. And a dust collector F for collecting dust. G is the main fan for suction,
M is a main fan motor for driving this, and H1,
H2, H3 ... (hereinafter, simply referred to as H)
Indicates an opening adjustment damper attached to each suction hood. The dust collector F includes, for example, a plurality of dust collecting chambers J1, J
2. Each of the dust collecting chambers is a bag filter type dust collector having a bag filter P,
When dust accumulates in the bag filter and reaches a predetermined pressure loss, the backwashing fan Q is operated to backwash with pressurized air.

[0003]

In order to improve the operation efficiency of the dust collecting apparatus, the suction hood E is adapted to the generation of dust accompanying the operation of the electric furnace B and the preheater C.
It is required that the opening degree of each of the dampers H1, H2,... Of E1, E2,. Is done. In addition, it is necessary to sequentially backwash each bag filter in each dust collection chamber in accordance with the accumulation of dust in the dust collector F, and these operations are usually performed in a remote operation room. However, it is difficult to monitor the abnormality of each device in the operation room, and it is necessary to go to the site directly and check each device, which is extremely troublesome. In view of the above, the present invention performs the operation of the dust collector by a computer, and performs the operation of each device, the monitoring of the status, the change of the set value, the recording of the abnormal value, the investigation of the cause of the failure, the maintenance management, and the like more efficiently from a remote place. The purpose is to do.

It is a further object of the present invention to save energy by automatically controlling power consumption by controlling the amount of suction air by a computer.

[0005]

According to a first aspect of the present invention, there is provided a system for managing a dust collecting apparatus, comprising: a suction hood opening / closing mechanism for a dust generating source; In addition to monitoring and adjusting by a deployed computer, the above-mentioned computer is a dust collector provided with a graphic display having a touch switch function. In the dust collector, the operating status of each device is stored by the computer, and the status monitoring of each operating mechanism is performed. , Operation operation, setting value change, maintenance management, failure cause investigation, abnormality record, etc. are displayed on the graphic display by selecting and pressing the touch switch, and the operation status of each device is stored by the computer, and the operation status signal or An operation pattern is automatically selected from conditions such as gas temperature and dust concentration, and the inverter or hydraulic And controlling the rotational speed of the fan at a rotational speed control system etc., and performs energy-saving operation.

[0006]

[Operation] The operation of various devices is switched to the display of graphics required for each operation, and is performed interactively based on the graphic display. The operation is therefore quick and easy. Also, the operation is performed by setting the operating conditions and the fan rotation speed, and the result is displayed on a graphic display,
Energy saving can be achieved.

[0007]

[Embodiment] The figure shows an example in which the present invention is applied to the comprehensive management of a dust collector D in an electric furnace factory. A computer T is used as an operating means for the dust collecting device D, and the computer T includes a graphic display W having a touch switch function. The display W displays required items among the items stored in the computer.
FIG. 2 shows an example of the screen w1 shown on the display. On this screen w1, for example, the opening degrees of the dampers H1 to H6 and a large number of the touch switches 2a to 2g are displayed, and the opening degrees of the dampers are shown in percentage. At this time, the opening degree of each damper is determined by the operation of the electric furnace B preheater C.

For example, the amount of smoke generated is large when the raw materials are supplied to the electric furnace B and the preheater C, and the amount of smoke is reduced at the end of heating. Therefore, when the raw materials are charged into the electric furnace, the dampers H1 to H3 need to have a larger opening degree than the other dampers H4 to H6.
At the time of charging raw materials into the pre-filter C, the dampers H4 to H
The opening on the 6 side needs to be large. When both the electric furnace and the preheater are heating and the amount of smoke is small, the rotation speed of the main fan may be reduced. Furthermore, the amount of smoke generated differs depending on the raw materials to be charged. If the opening degree of each damper, that is, the opening degree pattern for each damper, is set in advance, a predetermined pattern is automatically generated by applying the operating state of the electric furnace B and the preheater C to the computer T by an electric signal. To save energy.

If you want to change the pattern,
Press the switch 2b for pattern setting to display the screen w shown in FIG.
Switch to 2. On this screen, switches for opening and closing are displayed for each damper, and these switches are selectively pressed to adjust the degree of opening and closing. When the processing is completed, the pattern is stored by pressing the input switch 2i, and the screen returns to the screen w1 in FIG.

The manual operation is normally performed at the time of maintenance. When the manual operation switch 2a is pressed, the screen is switched to a screen w3 shown in FIG. 4 and the opening / closing switch for each damper is operated to adjust the opening / closing degree.

In monitoring the dust collector F, the dust collector monitor switch 2c is pushed in FIG. As a result, FIG.
Is displayed. At this time, for example, there is an indication of an abnormality in the main fan motor, and in order to know the situation, the monitor switch corresponding thereto is depressed as shown in FIG.
Screen w5 shown in FIG. This screen displays whether or not the bearing temperature of the motor M exceeds the set value, so that it is possible to know where the motor is abnormal. In order to know the temperature change of the abnormal part in the example of the figure, by pressing the switch g2 of the graph display of the abnormal part,
The screen is switched to a screen w6 shown in FIG. Thereby, the temperature change can be known. However, the figure shows the temporal change of the temperature for the past 8 hours, but this can be switched to another screen to know the temporal change of the temperature before that. These are stored in the computer T and are read out.

In FIG. 2, there is an abnormal display on the damper, and the cause (the damper is generally driven by a motor and mainly caused by heat generation of a bearing of the motor) is used for a maintenance monitor. Switch 2
By pressing h, the monitor screen for the damper is displayed in the same manner as the monitor screen for the dust collector (FIG. 6), but the procedure is the same and the description is omitted.

When using the method of the present invention, the contents stored in the computer are called up on the screen of the graphic display, so that, for example, the current operating state of the dust collector can be known. One example is shown in FIG. Figure screen w
Reference numeral 7 denotes a report of the operation status of the dust collector.

The trouble history of each unit stored in the computer can be displayed together with the date and time of the trouble.
The procedure is shown on a screen w8 in FIG. The screens 7 and 8 can be printed if necessary.

Further, in the present system, when energy saving operation is performed by controlling the rotation speed of the main fan using an inverter or a clutch, the actual power consumption is integrated and stored in the computer, and the system is used for pattern adjustment. The effect can be confirmed on the monitor screen (FIG. 10), and the shift signal of the main fan in the pattern operation can be displayed in a graph, so that the pattern setting can be adjusted in view of energy saving.

FIG. 10 shows the energy saving efficiency for eight days in the case of continuous operation. The continuous operation power indicates the power consumption in the case of operating at a constant rated power during the operation time. KW) is displayed (this numerical value is used as a reference value). Actual power consumption, for example, depending on the type of raw material to be charged, the gas temperature generated from the electric furnace, electric furnace, control of the opening of the damper by the dust concentration and the like generated from the pre-heater,
The fan speed is controlled by a rotation speed control device such as an inverter or a hydraulic clutch based on the suction air flow. The result was calculated from a power meter. The example in the figure shows that this resulted in a 37% energy saving effect on the first day.

In this case, the type (condition) of the operation and the reduction rate of the suction air amount are variously changed and set, and the result is displayed by inputting the result to the computer, thereby displaying the result. You can search for energy-saving conditions.

[0018]

As described above, according to the present invention, a required screen is displayed by operating a dust collector by a computer, using a graphic display having a touch switch function,
Since the operation is performed based on this, a large number of screens can be switched to monitor a large number of statuses, drive operations, change pattern settings, record abnormalities and call them up, handle them, display trouble spots and investigate their causes, maintenance management, etc. Can be performed interactively, and the operation can be performed easily.
Further, according to the present invention, when controlling the rotation speed of the suction fan in accordance with conditions such as operating conditions, generated gas concentration, and generated gas temperature for energy saving management, when setting various conditions for the rotation speed control device, In addition, the actual power consumption is displayed, and based on this, the fan speed can be controlled, and the energy saving operation can be performed effectively.

[Brief description of the drawings]

FIG. 1 is an overall schematic explanatory view of a dust collecting apparatus to which the present invention is applied.

FIG. 2 shows a basic screen of a graphic display.

FIG. 3 shows a pattern change screen of a building damper of the graphic display.

FIG. 4 shows a manual operation screen of a building damper of the graphic display.

FIG. 5 shows a dust collector monitor screen of the graphic display.

FIG. 6 shows a monitor screen of a main fan motor of the graphic display.

FIG. 7 shows a screen of a load-side bearing temperature change of the main fan of the graphic display.

FIG. 8 shows a screen of an operation status report of the building dust collector device of the graphic display.

FIG. 9 is a screen showing a failure history of each device of the graphic display.

FIG. 10 is a monitor screen showing the power consumption of the graphic display.

[Explanation of symbols]

 D Dust collector E Suction hood H Damper T Computer W Graphic display

Claims (1)

(57) [Claims] 1. An opening / closing mechanism of a suction hood for a dust generating source and an operating mechanism of a dust collector are monitored and adjusted by a computer provided at a remote place, and the computer has a graphic display having a touch switch function. In a dust collector equipped with a container, the operating status of each device is stored by the computer, and the status of each operating mechanism is monitored, operation is performed, setting values are changed, maintenance management,
Failure cause investigation, abnormality record, etc. are displayed on the graphic display by selecting and pressing the touch switch, and the operation status of each device is stored by the above-mentioned computer, and automatically from the operation state signal or conditions such as gas temperature, dust concentration, etc. A management system for a dust collector, wherein an operation pattern is selected, a rotation speed control device such as an inverter or a hydraulic clutch controls a rotation speed of a fan, and energy saving operation is performed.