JP3122694U - Floating roof tank monitoring device - Google Patents

Abstract

[PROBLEMS] To quickly and reliably grasp the state of a floating roof at the time of a disaster despite a simple and inexpensive configuration.
An imaging means provided so that the state of a floating roof can be photographed, a communication line for transmitting an image photographed by the photographing means, and portable and transmitted via the communication line. A display unit 11 for displaying video, a battery 12 that can be carried together with the display unit 11, and a power line 14 for supplying power of the battery 12 to the photographing unit 9 are provided.
[Selection] Figure 1

Description

  The present invention relates to a monitoring device for a floating roof tank.

  In floating roof tanks, the crude oil contained by the earthquake causes a sloshing phenomenon, the floating roof tilts, oil leaks and gas leaks occur, and in some cases ignites and fires, and in the worst case, there is a risk of explosion. is there. For this reason, when an earthquake occurs, it is necessary to grasp the state of the floating roof (including the fire situation) and deal with it early. Specifically, when it is determined that the floating roof is tilted, by supplying air into the tank by sucking and foaming the foam aqueous solution in which water and foam extinguishing agent are proportionally mixed by the foam fire extinguishing equipment, There is a need to prevent the occurrence of fire and to extinguish the fire that occurred early.

  However, the state of the floating roof is usually very dangerous because a person goes up the stairs installed in the tank and visually grasps it. Moreover, since there are a plurality of floating roof type tanks, it would take a long time if it was done manually, and it might be too late. In addition, a conventional surveillance camera is expensive because it may not function due to a power failure during a disaster. For this reason, there has been a demand for a mechanism that can easily grasp the state of the floating roof even in the event of a disaster such as an earthquake.

  Therefore, an object of the present invention is to provide a floating roof type tank monitoring apparatus that can quickly and reliably grasp the state of a floating roof in the event of a disaster, despite the simple and inexpensive configuration.

  In order to solve the above-mentioned problems, the present invention provides a floating roof type tank monitoring device, a photographing means provided so that the state of the floating roof can be photographed, and an image photographed by the photographing means. A communication line; a display means for displaying a video that is portable and transmitted via the communication line; a battery that is portable with the display means; and for supplying power of the battery to the photographing means. It is set as the structure provided with the power line.

  With this configuration, it is only necessary to install photographing means in each tank body. For this reason, the attachment work can be completed very easily and inexpensively. Moreover, it is only necessary to carry the display means and the battery as necessary and connect them to the communication line and the power line extending from the photographing means. That is, the photographing unit can be driven by the battery power, and the photographed video can be displayed on the display unit. Therefore, the operator can easily and safely monitor the state of the floating roof without going up to the upper part of the tank body, and can make an appropriate judgment quickly.

  The communication line may be able to perform power line carrier communication by making the power line usable as a communication line. The display means can be replaced by a notebook computer or the like.

  The photographing means, the communication line, and the power line are respectively installed in a plurality of tanks, and the communication line and the power line of each tank are collected in one place and connected to a joint box. The display means and the battery include the joint box. It is preferable to be able to connect to each imaging means via

  With this configuration, if the display means and the battery are carried up to the joint box integrated in one place, the imaging means of each tank connected to the joint box is driven via the communication line and the power line, and the display means takes an image. Displayed video can be displayed. Therefore, it becomes possible to detect the state of the floating roof of a plurality of tanks very efficiently.

  It is preferable to further include a recording unit for recording the video transmitted from the photographing unit via the communication line.

  With this configuration, the state of the floating roof of each tank can be recorded and analyzed later. Therefore, it is possible to specify the cause of the fire and the like, and it is possible to effectively use it for the next time or judgment at the time of another tank disaster.

  It is preferable that an identification unit is provided for identifying which tank the image captured by the imaging unit belongs to.

  With this configuration, even when a plurality of tanks are detected at one place, it is possible to determine from which tank the identification means is at a glance by looking at the video displayed on the display means. In particular, if a recording unit is provided, it is easy to specify the tank even in later analysis or the like, which is very convenient.

  The identification means can take various configurations such as an identification section provided in a range where the image is photographed by the photographing means and an identification section such as a tank number added to the video by the photographing means itself.

  According to the present invention, since only the photographing means need be installed in each tank, the installation cost is very low. Also, the photographing means can be driven by a portable battery, and as a result, the photographed image can be displayed on the display means, so that the state of the floating roof can be safely, easily and quickly without the operator climbing the tank Can be detected and its state can be determined.

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

  FIG. 1 is a schematic view of a floating roof tank 1 provided with a monitoring device according to this embodiment, and FIG. 2 is a schematic cross-sectional view thereof. This floating roof type tank 1 is composed of a tank body 2 and a floating roof 3 (floating roof) that can be raised and lowered according to a change in the water level of liquid (crude oil, naphtha, etc.) stored in the tank body 2. . Then, as shown in FIG. 3, a plurality of (in this case, four) tanks 1 are surrounded by an oil barrier 4 so that even if an oil leak occurs, it is designed not to spread around the tank.

  The tank main body 2 has a bottomed cylindrical shape, and a flange portion 5 is extended to the outer peripheral side over the entire circumference of the upper opening. A handrail 6 is provided at the inner and outer peripheral edge portions of the collar portion 5 so that an operator can move the collar portion 5. A part of the heel part 5 is a landing, from which a staircase 7 is formed spirally along the outer peripheral surface of the tank body 2.

  The floating roof 3 is a single-layer roof (single deck) at the center, and has an annular floating box 8 (pontoon) on the outer periphery. In addition to the box floating roof type, the floating roof 3 includes a double floating roof type and an internal floating roof type.

  As shown in FIG. 4, the monitoring device receives a camera 9 installed in the tank body 2, a joint box 10 installed for one of the plurality of cameras 9, and an image transmitted from the camera 9. Display device 11 and a battery 12 for supplying power to each camera 9.

  For the camera 9, for example, an explosion-proof camera (for example, see Japanese Patent No. 3526814) can be used. When using an explosion-proof camera, it is safe to prevent inconveniences such as flooding and rusting even if the environment of the installation site is bad. In particular, in this embodiment, since only the camera 9 is installed in the tank main body 2, a stable use state can be maintained over a long period of time.

  One camera 9 is provided for each tank body 2 installed at a plurality of locations (a plurality of cameras 9 as required). The installation location of the camera 9 may be any location as long as it is an upper portion of the tank body 2 and can photograph the state of the floating roof 3. However, since the floating roof 3 moves downward as the liquid level of the liquid stored in the tank main body 2 decreases, it is necessary to be able to photograph even if it moves to a low position. Specifically, the camera 9 may be installed on the handrail 6 using a simple jig.

  In addition, it is preferable to provide an identification member that indicates which tank 1 is to be photographed in an area photographed by the camera 9. This identification member may be provided on the camera 9 itself or on the tank body 2 side. Further, it may be displayed electronically on the screen on the monitor device 11 side described later.

  One joint box 10 is provided outside the oil barrier 4 for a plurality of cameras 9 (four in this case). Each camera 9 and the joint box 10 are connected by a communication line 13 and a power line 14 made of a coaxial cable or an optical fiber cable. However, the communication line 13 and the power line 14 can be configured to have both functions by using an optical / electrical conversion technique. As shown in FIG. 1, the communication line 13 and the power line 14 are suspended from the upper end of the tank body 2 while being inserted into the cylindrical body 15, and are guided to the outside of the oil barrier 4 along the ground. It is burned. The cylindrical body 15 is appropriately fixed to the outer peripheral surface of the tank body 2 or the ground in order to prevent displacement. However, if the cylindrical body 15 is disposed along the handrail 6 of the staircase 7 of the tank body 2 and is appropriately fixed to the handrail 6 with a binding band or the like, the installation work can be further facilitated.

  The joint box 10 includes a switching unit so that the communication line 13 and the power line 14 connected from each camera 9 can be switched to the monitor device 11 described below.

  The monitor device 11 includes a display unit 16, a control unit 17, and an input / output unit 18. However, it is also possible to use a commercially available video walkman or notebook computer in which these are integrated.

  The display unit 16 displays an image transmitted from the camera 9 and can use various displays such as a liquid crystal panel. The control unit 17 processes the video transmitted from the camera 9 and displays it on the display unit 16. Further, it is configured to determine which camera 9 has transmitted the data by referring to the table stored in the memory, and to perform an identification display indicating which tank 1 is on the display unit 16. You can also The communication line 13 is detachably connected to the input / output unit 18.

  The monitor device 11 may simply display the video transmitted from the camera 9 on the display unit 16, but has a recording function capable of recording on a storage medium such as a video tape, a hard disk, or a DVD. It is preferable. Further, it may have a function capable of transmitting video to the headquarters by wireless communication means.

  As the battery 12, a portable rechargeable small battery (for example, a DC5V or DC12V battery 12) used for a video camera or the like can be used. However, a disposable type such as a dry battery can also be used. The battery 12 supplies power to both the camera 9 and the monitor device 11 described above. However, the battery 12 may be prepared separately for each device.

  Next, the operation of the monitoring device in the floating roof tank 1 having the above-described configuration will be described.

  When an earthquake or the like occurs and the floating roof 3 tilts and the liquid stored in the tank main body 2 may flow out to the upper side of the floating roof 3, leaving it as it is may cause a fire. It is very difficult to extinguish once a fire occurs in the floating roof tank 1.

  Therefore, the worker carries the monitor device 11 and the battery 12 to the site, connects the monitor device 11 to the communication line 13 and connects the power line 14 with the joint box 10 installed for a plurality of cameras 9. The battery 12 is connected to the battery. Power can be supplied to the camera 9 by the connected battery 12, and an image captured by the camera 9 can be visually recognized on the monitor device 11 via the communication line 13. The worker confirms the state of the floating roof 3 from the image displayed on the monitor device 11. The image is displayed so that the tank 1 can be identified by the identification member. Therefore, even if the operator mistakenly connects the battery 12 and the monitor device 11 to the camera 9 of the different tank 1 in the joint box 10, it can be confirmed on the screen.

  Judging from the image displayed on the monitor device 11, if the risk of fire is high, or if a fire has already occurred, contact the headquarters by telephone or wireless to drive the foam extinguishing equipment. Start fire prevention or fire fighting activities. In addition, if a recording function is installed, video displayed on the monitor device 11 is recorded as necessary.

  In the same manner, the connection between the battery 12 and the monitor device 11 is switched by the joint box 10, and the images from the cameras 9 installed in the tanks 1 are sequentially displayed on the monitor device 11 for inspection. Just start. However, the connection between the battery 12 and the monitor device 11 may be configured to be automatically switchable, or all the cameras 9 are driven by the battery 12 and the display unit 16 of the monitor device 11 is displayed once on the multi-screen. You may make it display on.

  Thus, the state of the floating roof 3 can be inspected with all the connected cameras 9 only by switching the connection of the battery 12 and the monitor apparatus 11 with the joint box 10 installed in one place. Therefore, it is not necessary for the worker to move to the upper part of the tank main body 2, and the inspection can be performed in one place, so that the work efficiency is good. Since only the camera 9 (explosion-proof camera) is installed in the tank 1, even if it is used for a long period of time, it is unlikely to cause a failure. Moreover, since it can be driven by the portable battery 12, there is no problem that it cannot be used in an emergency.

In addition, in the said embodiment, although it comprised so that the camera 9 might be previously installed in each floating roof-type tank 1, it is also possible to install at the time of use. In this case, the video signal cord wound around the cord reel and the power cord wound around another cord reel are connected to the camera 9 respectively. Then, the camera 9 is carried from the respective cord reels to the tank while rewinding the cords, and is installed at a desired position by the mounting bracket. For example, a cord reel having a total length of 90 m is used. However, if the cord reel is connected by an explosion-proof outlet as required, it can be further extended. The video signal cord reel may be connected to the monitor device 11 via an RCA connector from a BNC (Bayonet Neill-Concelman) connector. Further, the power cord reel may be connected to the power source via the plug at the tip. In refineries and the like, an automobile is generally used for movement, and therefore, an in-vehicle power source equipped with a vehicle cigarette lighter socket can be used as a power source.

It is a schematic front view of the floating roof type tank which concerns on this embodiment. It is sectional drawing of FIG. It is a top view which shows the installation state of the floating roof type tank shown in FIG. It is a perspective view which shows the connection state of the camera, joint box, monitor apparatus, and battery which are employ | adopted as the floating roof type tank of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Tank main body 3 ... Floating roof 4 ... Oil barrier 5 ... Buttocks 6 ... Handrail 7 ... Staircase 8 ... Floating box 9 ... Camera 10 ... Joint box 11 ... Monitor apparatus 12 ... Battery 13 ... Communication line 14 ... Power line 15 ... cylindrical body 16 ... display unit 17 ... control unit 18 ... input / output unit

Claims (4)

Photographing means provided so that the state of the floating roof can be photographed;
A communication line for transmitting the video imaged by the imaging means;
Display means for displaying a video that is portable and transmitted via the communication line;
A battery portable with the display means;
A power line for supplying power of the battery to the imaging means;
A floating roof type tank monitoring device. The photographing means, the communication line and the power line are respectively installed in a plurality of tanks,
The communication lines and power lines of each tank are connected to the joint box in one place.
2. The floating roof tank monitoring apparatus according to claim 1, wherein the display unit and the battery are connectable to each photographing unit through the joint box.   The monitoring apparatus for a floating roof type tank according to claim 1 or 2, further comprising recording means for recording an image transmitted from the photographing means via a communication line.   The floating roof tank according to any one of claims 1 to 3, further comprising identification means for identifying which tank the image photographed by the photographing means belongs to. Monitoring device.

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