JP2016048222A - Flue investigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flue investigation device capable of investigating the inside of a horizontal flue connected to a chimney even during operation of a blast furnace facility through which flue gas flows.SOLUTION: A flue investigation device 1 for investigating the inside of a horizontal flue connected to a chimney includes: a heat-resistant traveling body 6 traveling inside the flue; an imaging device 7 mounted on the traveling body, and imaging the inside of the flue; a heat-resistant transparent canopy 8 provided in the traveling body so as to cover the imaging device; a heat-resistant luminaire 9 mounted on the traveling body; and a heat-resistant flexible hose 3 supplying refrigerant for cooling from the outside of the flue to the inside of the canopy, supplying power to the imaging device and the luminaire, transmitting traveling drive force to the traveling body, and transmitting/receiving data to/from the imaging device between itself and the outside of the flue.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a flue survey apparatus capable of examining the inside of a horizontal flue connected to a chimney even during operation of a blast furnace facility or the like through which flue gas flows.

  Patent Documents 1 and 2 are known as techniques for investigating the inside of a flue through which high-temperature flue gas flows. The “dust concentration measuring device” disclosed in Patent Document 1 can reliably measure the dust concentration even in a large-diameter flue or a fluid containing a high concentration of dust, and can perform the optical axis adjustment work in advance in a factory or the like. , Dust that can improve measurement accuracy and reduce costs, and can keep the optical axis constant without being affected by aging distortions in the flue, which can also reduce maintenance costs An object of the present invention is to provide a concentration measuring device. A light passage tubular body that is tubular and has a fluid circulation space formed in an intermediate portion thereof has an axis extending in a direction substantially perpendicular to the fluid circulation direction of the flue and the fluid circulation space is It is arranged to penetrate the wall surface of the flue so as to be located in the flue, and to project light from one end side of the light passage tubular body to the fluid flowing through the fluid circulation space to obtain the light transmittance. .

  Patent Document 2 “Flame Flame Detection System” provides a flue flame detection system capable of accurately and reliably detecting flames in the flue with a simple configuration and control, and capable of self-diagnosis of component failures and dirt. As an object, an ultraviolet detector, an ultraviolet light emitter, a shutter, and a controller are provided. The shutter opens and closes the path of the ultraviolet light from the flame in the flue to the ultraviolet detector. The controller operates the ultraviolet light emitter at the set timing, and detects whether the ultraviolet light detector and the ultraviolet light emitter are abnormal or dirty, and whether the transparent glass is dirty based on the presence or absence of the ultraviolet light detected by the ultraviolet light detector. In addition, when the ultraviolet light is detected by the ultraviolet light detector even though the ultraviolet light emitter is not operated, the controller closes the shutter and checks whether the ultraviolet light is detected by the ultraviolet light detector. Whether it is a flame in the road or a self-discharge of the UV detector is discriminated.

JP 2004-317148 A JP 2007-32988 A

  None of the patent documents investigates the inside of the flue, but cannot investigate the structural deterioration inside the flue. That is, in the blast furnace facilities of steelworks, etc., since the inside of the flue gradually deteriorates due to the use for many years, it is necessary to investigate the deterioration state of the inside.

  It is not preferable to stop the operation of the blast furnace equipment or the like because the operation efficiency is lowered. On the other hand, in order to conduct an investigation while maintaining the operation of a blast furnace facility or the like, it is desired to devise an investigation apparatus that can carry out an investigation inside a hot flue that reaches about 250 ° C. by flowing smoke.

  The present invention was devised in view of the above conventional problems, and it is possible to investigate the inside of a horizontal flue connected to a chimney even during operation of a blast furnace facility or the like through which flue gas flows. The purpose is to provide a flue survey device.

  A flue survey device according to the present invention is a flue survey device for investigating the inside of a horizontal flue connected to a chimney, the heat-resistant traveling body traveling inside the flue, and the traveling body A photographing device for photographing the inside of the flue, a heat-resistant transparent canopy provided on the traveling body so as to cover the photographing device, and a heat-resistant lighting device mounted on the traveling body, Supplying a cooling refrigerant from the outside of the flue to the inside of the canopy, supplying power to the photographing device and the lighting device, transmitting a driving force to the traveling body, and between the outside of the flue A heat-resistant flexible hose for transmitting and receiving data to and from the imaging device is provided.

  The flexible hose has a gap through which a refrigerant flows.

  A refrigerant jet part for jetting the refrigerant to the outside of the canopy is provided.

  Inside the flexible hose, a refrigerant supply flexible pipe for supplying a refrigerant to the canopy, a power supply flexible cable for supplying power to the photographing device and the lighting device, and a traveling driving force are transmitted to the traveling body. And a flexible communication cable for transmitting and receiving data to and from the photographing apparatus.

  The flexible hose is installed outside the flue and is connected to a control facility including a refrigerant supply unit, a power supply unit, a power generation unit, and a communication control unit.

  The traveling body including the photographing device, the canopy, and the lighting device is configured to enter the flue from a front chamber that is partitioned by a heat-resistant cover that covers the opening formed in the flue so as to be openable from the outside of the flue. It is characterized by being driven toward.

  In the flue survey apparatus according to the present invention, it is possible to investigate the inside of a horizontal flue connected to the chimney even during operation of a blast furnace facility or the like through which flue gas flows.

It is a side view of the use condition which shows suitable one Embodiment of the flue investigation apparatus which concerns on this invention. It is AA arrow sectional drawing in FIG. It is a side view of the flue inspection apparatus shown in FIG. It is a front view of the flue inspection apparatus shown in FIG. It is sectional drawing of the flexible hose used for the flue inspection apparatus shown in FIG. It is a side view which shows the modification of the flue investigation apparatus which concerns on this invention. It is sectional drawing of the flexible hose used for the flue inspection apparatus shown in FIG.

  Hereinafter, a preferred embodiment of a flue inspection apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view showing a usage state of the flue survey apparatus 1 according to the present embodiment. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a side view of the flue survey apparatus 1 shown in FIG. FIG. 4 is a front view of the flue survey apparatus 1 shown in FIG. FIG. 5 is a cross-sectional view of the flexible hose 3 used in the flue survey apparatus 1 shown in FIG.

  As shown in FIGS. 1 and 2, a horizontal flue 2 that connects a combustion part of a blast furnace facility and a chimney is configured by installing a refractory material 5 on the inner peripheral surface of a hollow shaft 4 made of reinforced concrete. ing. Since this refractory material 5 is exposed to high temperature flue gas and deteriorates over time, it is necessary to investigate the deterioration state inside the flue 2.

  The flue survey apparatus 1 is fed into the flue 2 from the outside of the flue 2 and travels inside the flue 2 in order to carry out the survey. As shown in FIGS. 3 and 4, the flue survey apparatus 1 mainly includes a traveling body 6 for traveling inside the flue 2, a photographing apparatus 7 for photographing the inside of the flue 2, and a transparent canopy. 8, the lighting device 9, and a flexible hose 3 having one end connected to the traveling body 6 and the other end drawn out of the flue 2.

  In the flue inspection apparatus 1, all exposed portions exposed to the atmosphere inside the flue 2 are formed of a heat resistant material. At least the traveling body 6, the canopy 8, the lighting device 9, and the flexible hose 3 are heat resistant. As heat resistance, since the temperature inside the flue 2 is about 250 ° C., it is only necessary to have a performance capable of withstanding this temperature.

  The traveling body 6 is driven by the body 10, the chassis 11 that supports the body 10, the power transmission mechanism 12 that is mounted on the chassis 11, and the power transmitted from the power transmission mechanism 12 while being supported by the chassis 11. , And an endless track 13 that can travel even if there is unevenness. The power transmission mechanism 12 includes a pair of left and right clutches (not shown) and a speed reducer 14 for changing directions.

  The driving force is transmitted from the flexible hose 3 to the power transmission mechanism 12. The traveling body 6 travels inside the flue 2 when the endless track 13 is driven by the traveling driving force transmitted to the power transmission mechanism 12.

  The photographing device 7 is mounted on the body 10 of the traveling body 6. The photographing device 7 is configured by installing a television camera 16 on a turntable 15 that can be driven to rotate. The television camera 16 is rotated by a turntable 15 that is driven to rotate, and takes an image around the mounting position. Image data of the photographing device 7 is sent to the flexible hose 3.

  The canopy 8 is formed of transparent heat-resistant glass for photographing by the photographing device 7. The canopy 8 is provided on the body 10 of the traveling body 6 so as to be openable and closable so as to cover the imaging device 7 in order to protect the imaging device 7 from the high temperature and dusty atmosphere inside the flue 2. The lighting device 9 is mounted on the body 10 of the traveling body 6 so as to be positioned behind the canopy 8 so as to illuminate the traveling direction of the traveling body 6 from behind the photographing apparatus 7.

  The flue investigation apparatus 1 is supplied with coolant such as cooling air or cooling water for cooling from the outside of the flue 2 to the inside of the canopy 8 or the traveling body 6, and supplies power to the photographing device 7 and the lighting device 9. And a heat-resistant flexible hose 3 for transmitting / receiving data to / from the photographing device 7 with the outside of the flue 2.

  As shown in FIG. 5, the flexible hose 3 specifically includes flexible pipes 17 and 18 for supplying refrigerant for supplying a refrigerant such as cooling air and cooling water to the canopy 8 and the traveling body 6, and an imaging device. 7 and the power supply flexible cables 19 and 20 for supplying power to the lighting device 9, the power transmission flexible shaft 21 for transmitting the driving force to the traveling body 6, and communication for transmitting and receiving data to and from the photographing device 7. Flexible cables 22 and 23 are built in. In the illustrated example, a heat-resistant tube 24 is lined on the inner surface of the flexible tube 3.

  The refrigerant, for example, cooling air, supplied by the refrigerant supply flexible pipes 17 and 18 is introduced into the canopy 8 to cool the inside of the canopy 8 to about 50 ° C., thereby preventing the temperature of the photographing apparatus 7 from rising. In the body 10 of the traveling body 6, cooling air that has cooled the inside of the canopy 8 is supplied to the outside of the canopy 8 in order to keep the outside of the canopy 8 easily exposed to the flue gas flowing inside the flue 2 and easily contaminated. The refrigerant | coolant ejection part 25 sprayed on is provided.

  The cooling water is supplied to the traveling body 6 to cool the body 10, the chassis 11, the power transmission mechanism 12, and the like. The traveling body 6 is formed with a drainage part for draining the supplied cooling water. The flexible cables for power supply 19 and 20 supply power to the photographing device 7 and the lighting device 9 in order to operate the turntable 15 and the television camera 16 and turn on the lighting device 9. In the illustrated example, the flexible cables 19 and 20 for power feeding are built in two types for alternating current and direct current.

  The power transmission flexible shaft 21 transmits the rotational driving force to the power transmission mechanism 12 of the traveling body 6. A pair of clutch wires 26 and 27 are incorporated in the flexible hose 3 in order to control a pair of left and right clutches used to change the direction of the traveling body 6.

  As the communication flexible cables 22 and 23, two types of video cables and communication cables are built in. The video cable 22 is used to transmit video data captured by the television camera 16. The communication cable 23 is used for transmission of operation control data of the photographing device 7, reception of response data from the photographing device 7, and transmission of an ON / OFF operation signal of the illumination device 9. The flue survey apparatus 1 can be appropriately remotely controlled by wired control using the flexible hose 3.

  In the flexible hose 3, there is a gap S between the pipes 17, 18, the cables 19, 20, 22, 23, the shaft 21 and the like housed inside. In order to cool the inside of the flexible hose 3, a coolant such as cooling air is supplied to the gap S. The refrigerant supplied to the gap S is discharged into the flue 2 from a hole formed in the vicinity of the traveling body side end of the flexible hose 3.

  As shown in FIG. 1, the flue 2 is formed with an opening 28 through which the flue investigation device 1, that is, the traveling body 6 including the canopy 8 and the lighting device 9 is fed into the flue 2. In addition, a heat-resistant cover 29 is installed outside the flue 2 to cover the opening 28 so that the opening 28 can be opened.

  The heat resistant cover 29 forms a front chamber 30 that can accommodate the entire flue survey apparatus 1. The cover 29 is formed with a hole 31 for drawing the flexible hose 3 to the outside of the flue 2. The flue 2 is blocked by removing the cover 29 and installing the flue survey apparatus 1 in the front chamber 30 and then covering the opening 28 with the cover 29.

  A control facility 32 connected to the flexible hose 3 is installed outside the flue 2 that covers the opening 28 with the cover 29 and is sealed. The control facility 32 mainly includes a refrigerant supply unit, a power supply unit, a power generation unit, and a communication control unit.

  The refrigerant supply unit includes a refrigerator that generates cooling air and cooling water, a cooling air blower fan, a cooling water pump, and the like, and sends the cooling air and cooling water to the refrigerant supply flexible pipes 17 and 18. Further, the refrigerant is also fed into the gap S of the flexible hose 3. The power supply unit is connected to the power supply flexible cables 19 and 20 and supplies commercial AC power or DC power converted by an AC / DC converter.

  The power generation unit includes an electric motor and the like, and rotationally drives the power transmission flexible shaft 21 connected thereto. In the power generation unit, the operation ends of the clutch wires 26 and 27 are also arranged in relation to the driving of the traveling body 6.

  The communication control unit is connected to the communication flexible cables 22 and 23. The communication control unit includes a monitor for displaying image data and a memory for storing image data, and is configured by a personal computer or the like that can output control commands. The transmitted image data can be viewed and saved outside the flue 2. Further, the communication control unit transmits and receives data to and from the imaging device 7 and operates the illumination device 9 via the communication cable 23.

  Next, the operation of the flue survey apparatus 1 according to this embodiment will be described. When conducting the survey, after placing the flue survey device 1 in the front chamber 30 inside the heat-resistant cover 29, the flue survey device 1 is remotely controlled by wire from the control facility 32 using the flexible hose 3. It travels from the opening 28 into the flue 2. Inside the flue 2, the flue survey apparatus 1 performs a survey by photographing under the control of the control facility 32.

  Specifically, the photographing device 7 and the lighting device 9 are operated by the power supplied by the flexible cables 19 and 20 for feeding, and the photographing device 7 photographs the inside of the flue 2 that is brightly illuminated by the lighting device 9. In the photographing device 7, the turntable 15 is rotated or the television camera 16 is freely moved by transmission / reception using the communication flexible cables 22 and 23, and the photographed image data is transmitted.

  The control facility 32 outside the flue 2 continues the investigation while traveling the traveling body 6 by remote control while viewing the image data sent on the monitor. The traveling body 6 travels by driving the endless track 13 with the power transmitted from the power transmission flexible shaft 21. By operating the pair of left and right clutch wires 26 and 27, the traveling direction of the traveling body 6 is changed.

  Further, during the investigation, the traveling body 6 and the canopy 8 are continuously supplied with refrigerants such as cooling air and cooling water via the refrigerant supply flexible pipes 17 and 18, and the flue investigation apparatus 1 is smoked. Protect from high heat inside Road 2. The refrigerant is also continuously supplied to the gap S in the flexible hose 3.

  The flue survey apparatus 1 according to the present embodiment described above is a flue survey apparatus 1 for investigating the inside of a horizontal flue 2 connected to a chimney, and has a heat resistance that travels inside the flue 2. A traveling body 6, a photographing device 7 mounted on the traveling body 6 for photographing the inside of the flue 2, a heat-resistant transparent canopy 8 provided on the traveling body 6 so as to cover the photographing device 7, and the traveling body 6 The refrigerant is supplied from the outside of the flue 2 to the inside of the canopy 8 and the traveling body 6 to supply power to the photographing device 7 and the lighting device 8, and the traveling driving force is transmitted to the traveling body 6. In addition, since it is equipped with a heat-resistant flexible hose 3 for transmitting and receiving data to and from the outside of the flue 2, it is necessary to investigate even during operation of the blast furnace equipment where flue gas flows. Can be used anytime and without reducing the operating efficiency of the blast furnace equipment. It is possible to perform investigation of such flue 2 inside the deteriorated state over a period.

  Since the flexible hose 3 has a gap S through which the refrigerant is circulated, it is possible to prevent the flexible hose 3 that ensures wired remote operation from being thermally damaged.

  Since the refrigerant ejecting portion 25 for injecting the refrigerant to the outside of the canopy 8 is provided, the outside of the canopy 8 that is easily damaged by being exposed to the flue gas flowing inside the flue 2 can be maintained cleanly and smoothly. The inside of the flue 2 can be reliably photographed with the photographing device 7.

  Since the flexible hose 3 is installed outside the flue 2 and is connected to a control facility 32 including a refrigerant supply unit, a power feeding unit, a power generation unit, and a communication control unit, The flue survey apparatus 1 can be appropriately operated and photographed by the photographing apparatus 7.

  The traveling body 6 including the photographing device 7, the canopy 8, and the lighting device 9 has smoke from the front chamber 30 that is partitioned and formed by a heat-resistant cover 29 that covers the opening 28 formed in the flue 2 so as to be openable from outside the flue 2. Since the vehicle travels toward the inside of the road 2, it is possible to safely perform the work of sending the flue survey device 1 into the flue 2.

  6 and 7 show a modification of the above embodiment. In the above-described embodiment, the control equipment 32 installed outside includes a power generation unit, and power is transmitted from the power generation unit through the power transmission flexible shaft 21 to drive the endless track 13 of the traveling body 6. However, instead of this, a driving motor 33 for driving the endless track 13 may be mounted on the traveling body 6. In this case, the heat-resistant flexible hose 3 supplies driving power for driving the driving motor 33 instead of transmitting the driving force to the traveling body 6. Specifically, a flexible power cable 34 is built in the flexible hose 3 instead of the power transmission flexible shaft 21, one end of the power cable 34 is connected to the drive motor 33 of the traveling body 6, and the other end is connected. It is connected to the power supply unit of the control facility 32. Thereby, the traveling body 6 is traveled by the drive motor 33 provided thereon. Even if it is such a modification, the effect similar to the said embodiment can be acquired. In particular, since there is no flexible shaft 21 for power transmission that transmits movement inside the flexible hose 3, the reliability of the flexible hose 3 can be improved.

  In the embodiment and the modification, the case where only the photographing device 7 and the lighting device 9 are mounted on the traveling body 6 has been described. However, various devices such as a cross-section measuring device are mounted on the traveling body 6 and the flue Of course, various investigations on the inside may be made possible.

DESCRIPTION OF SYMBOLS 1 Flue investigation apparatus 2 Flue 3 Flexible hose 6 Running body 7 Imaging apparatus 8 Canopy 9 Illumination apparatus 17,18 Flexible pipe for refrigerant supply 19,20 Flexible cable for power supply 21 Flexible shaft for power transmission 22,23 Flexible cable for communication 25 Refrigerant ejection part 28 Opening part 29 Cover 30 Front chamber 32 Control equipment 33 Drive motor S Gap

Claims (7)

  A flue survey device for investigating the inside of a horizontal flue connected to a chimney, comprising a heat-resistant traveling body that travels inside the flue, and is mounted on the traveling body and photographs the inside of the flue A heat-resistant transparent canopy provided on the traveling body so as to cover the photographing apparatus, a heat-resistant lighting device mounted on the traveling body, and from the outside of the flue to the inside of the canopy Supplying coolant for cooling, supplying power to the photographing device and the lighting device, transmitting a driving force to the traveling body, and transmitting / receiving data to / from the photographing device with the photographing device A flue survey device comprising a heat-resistant flexible hose.   The flue survey device according to claim 1, wherein the flexible hose has a gap through which refrigerant flows.   The flue survey apparatus according to claim 1 or 2, further comprising a refrigerant jetting part that jets a refrigerant to the outside of the canopy.   Inside the flexible hose, a refrigerant supply flexible pipe for supplying a refrigerant to the canopy, a power supply flexible cable for supplying power to the photographing device and the lighting device, and a traveling driving force are transmitted to the traveling body. A flue investigation device according to any one of claims 1 to 3, wherein a flexible shaft for power transmission for communication and a flexible communication cable for transmitting and receiving data to and from the imaging device are incorporated.   The said flexible hose is installed in the said flue exterior, and is connected to control equipment provided with a refrigerant | coolant supply part, an electric power feeding part, a motive power generation part, and a communication control part. The flue survey device described in 1.   The traveling body including the photographing device, the canopy, and the lighting device is configured to enter the flue from a front chamber that is partitioned by a heat-resistant cover that covers the opening formed in the flue so as to be openable from the outside of the flue. The flue survey apparatus according to any one of claims 1 to 5, wherein the flue survey apparatus is driven toward the vehicle.   The traveling body is equipped with a drive motor for traveling the same, and the heat-resistant flexible hose supplies driving power for driving the drive motor, instead of transmitting the traveling driving force to the traveling body. The flue survey apparatus according to any one of claims 1 to 3 or 6, wherein

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