JPH01138445A - Inside inspection device for container - Google Patents

Abstract

PURPOSE:To inspect the inside of the container through remote operation without entering the container by inserting a TV camera unit into the container. CONSTITUTION:For example, when the inside of the reaction container 8 which has a stirring blade is inspected, a necessary device (carriage 3, control unit 7, etc.) is set outside the container 8 and then the TV camera unit 1 is inserted into the container 8. A driving motor 19 is controlled according to an inspection position to move up and down the camera 1. Then, the aperture, focus, enlargement, and lighting of the camera 1 are adjusted from the unit 7 to project an image of the inside of the container 8 on a monitor. Then, the camera 1 is shifted in position by extending or contracting a telescope type extension/ contraction device 2 to control the projection direction of the camera 1 properly under motor control and while the aperture, focus, and enlargement of the camera 1 are adjusted, the image of the internal surface of the container is projected on the monitor in order for inspection. Consequently, the inside of the container is inspected from outside through the remote operation without entering the container.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a device for inspecting the inside of a container.

More specifically, the present invention relates to a device for inspecting the inside of a container from the outside by inserting a television camera into the inside of the container.

<Prior Art> Since high-pressure gas, harmful fluids, etc. are handled inside containers such as reactors, the reliability of the equipment must be maintained at a high level.

To inspect the inside of these containers, it is common for an inspector to remove a large lid or the like and enter inside.

(Problems to be solved by the invention) The conventional method requires inspectors to enter the interior, which requires complicated work such as removing and attaching a large lid and temporarily erecting scaffolding for inspection inside. I need.

Additionally, inspectors may not be able to enter the interior because a working space cannot be secured due to the internal structure, or access may be restricted due to the nature of the internal fluid. Furthermore, before inspectors can enter, it is necessary to completely remove the pollution and cool it down, which takes extra time and reduces productivity.

In view of these circumstances, the inventors of the present invention have conducted intensive studies on a device that allows inspection of the inside of a container from the outside without entering the interior of the container, and as a result, have completed the present invention.

(Means for solving the problem) That is, the present invention is a container internal inspection device consisting of the following (al to (f)).

(a) A television camera unit comprising a television camera body that rotates vertically and horizontally and has aperture, focus, and magnification adjustment functions, and a light that rotates integrally with the television camera body (1)Cb) Above. A telescoping telescoping device (2) that supports a television camera unit and moves the position of the television camera unit up and down; (3) + d) A light unit that has multiple lights and can be moved left and right and up and down (4)
) (81 Auxiliary television camera unit (5) consisting of a television camera and light supported at the tip of a telescopic rod (6) (fl
1 unit (7) for controlling the television camera unit and light unit and monitoring images from the television camera.The present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 is a conceptual diagram in which an internal inspection of a reaction vessel is performed using an apparatus according to an embodiment of the present invention.

The television camera unit +11 consists of a television camera body and an illumination light. The TV camera unit can be rotated vertically and horizontally using motor control. The illumination light is integrated with the TV camera body and illuminates the direction of the camera. The television camera has adjustment functions such as aperture, focus, and magnification, which are performed by remote control from the control unit (7), as well as adjustment of the illuminance of the light.

The TV camera unit is a telescopic telescoping device (2)
is fixed at the tip of the As shown in FIGS. 3 to 5, the telescoping device consists of a multistage sliding member that is slidably inserted in the axial direction of a telescopic type.

Figure 3 is a side view of the telescopic telescoping device;
The figure is a sectional view. The cross-sectional shape of this telescoping device is not particularly limited, such as circular or rectangular, but if it is too thin, it will shake and the TV camera will be out of focus, making it impossible to obtain a clear image, so make sure to use stainless steel with a certain thickness. It is made with etc. FIG. 5 shows a connecting portion of a sliding member that is fitted in the axial direction of the telescoping device. The key Q9 attached to the surface of the inner cylinder is fitted into the keyway α of the outer cylinder, and slides along the keyway while preventing the inner cylinder from rotating and separating from the outer cylinder.

It is attached to the tip member of the telescoping device and is contracted or expanded by winding up or unwinding the wire (9) passed through the inside of the telescoping device. This winding or unwinding of the wire is performed by, for example, a device shown in FIG. The rotation of hoisting motor Q41 is controlled by winch drum a.
The rotation direction of the motor is changed by transmitting the signal to l11, which causes the television camera unit to move up and down. Although the method of transmitting the rotation of the motor to the drum is not particularly limited, it is desirable to incorporate a worm gear ring to prevent the telescoping device from falling suddenly. It is also desirable to install an anger pressure sensor on the TV camera unit to prevent damage to the TV camera unit and the container, and to incorporate a safety device that will cause the motor to reverse and wind up when the TV camera unit comes into contact with the inner wall of the container. .

The telescopic telescoping device and the device for driving and controlling it are attached to the old platform car (3).

It is desirable to provide a guide gauge α along both sides of the telescoping telescoping device in the direction of insertion into the container. The scope telescoping device and its drive and control device are movable up and down.

The light unit (4) is equipped with multiple lights,
The illumination angle of each light can be changed. This allows the illuminance of each individual light to be controlled from the control unit. The light unit also rotates left and right and can be moved up and down by winding up and unwinding the wire. These can be controlled remotely, but manual control is sufficient.

The TV camera unit (5) consists of a TV camera and a light. Television cameras have focus and aperture adjustment functions, which are remotely controlled from a control unit. This auxiliary television camera is used to inspect areas where there is a stirring blade or the like in the container to be inspected, which is a blind spot for the main television camera. This auxiliary television camera unit is attached to a telescoping telescoping rod (6). The main and auxiliary TV cameras and light units are connected to the control unit (η), and the shooting conditions such as the direction and focus of the TV camera, as well as the flashing and illuminance of the lights, are controlled.The images captured by the TV camera are transmitted to the control unit. The images are displayed on a color monitor built into the TV camera to inspect the inside of the container.The image displayed on the monitor is affected by the illuminance and angle of illumination of the light, so it is necessary to change the illuminance of the light attached to the TV camera and A clear image is produced by changing the number and direction of the unit's light. It is preferable to use a halogen lamp as the light. Characters are printed on the control unit to indicate the inspection date, container number, inspection location, etc. -generator,
It is preferable to have a videotape recorder and still camera for recording images. If necessary, by printing the inspection date, inspection location, etc. using a character generator and recording the images on video tape, etc., it becomes possible to re-inspect at a later date based on this record.

<Effects of the Invention> By using the apparatus of the present invention, there is no need for an inspector to enter the container and inspection can be performed from the outside, so the working environment is significantly improved. Further, since the preparatory work for inspection is simplified, it is possible to reduce the decrease in productivity and also to reduce inspection costs.

<Examples> The present invention will be explained in more detail by Examples, but the present invention is not limited by these Examples.

FIG. 1 is a conceptual diagram in which an internal inspection is performed using the apparatus of the present invention in a reaction vessel (8) having a stirring blade.

After stopping the operation of the reactor vessel, drain liquid, remove harmful substances, and cool it, and open the inspection manhole and spare nozzle.

Pull up the TV camera unit +11 in advance and attach it to the trolley (3).
is raised using a hydraulic system, the tips of the guide gauges attached along both sides of the telescopic telescoping device are raised to a higher position than the manhole, and the cart is moved to bring the tips of the guide gauges closer to the manhole. The telescopic telescoping device (2) is lowered by the hydraulic device, the tip of the guide gauge is aligned with the center line of the manhole, and the trolley is fixed by the stopper.

A light unit (4) is inserted into the spare nozzle.

Next, the motor Q4 of the drive device of the telescope type telescoping device
1 and rotate the winch drum αQ to the slack side, the telescope type telescoping device will move the m of the TV camera unit.
The television camera unit is inserted into the container by gently extending the container.

The drive motor is controlled to move the TV camera unit up and down according to the inspection position. The control unit (7) adjusts the aperture, focus, and magnification of the TV camera and adjusts the lighting to display images inside the container on the monitor.The lighting is based on the light attached to the TV camera and is a light unit. The position of the TV camera is changed by extending and retracting the telescoping device, the projection direction of the TV camera is changed horizontally and vertically by motor control, and the aperture, focus, and magnification of the TV camera are adjusted. While doing so, inspect the inside of the container by displaying it on a monitor. An auxiliary television camera unit (5) supported at the tip of a telescopic telescoping rod (6) is inserted into the container to take pictures of areas that are blind spots due to the stirring blades. The inspection date, container number, inspection location, etc. are printed using a character generator and recorded on videotape to be used for re-inspection at a later date.

Once the internal inspection is complete, the winch drum is rotated in the winding direction and the television camera unit and light unit are removed from the container, and the inspection work is completed.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of internal inspection of a reactor using the apparatus of the present invention. FIG. 2 is a diagram showing a device for extending a telescopic telescoping device. 3 and 4 are a side view and a sectional view of the telescoping telescoping device. FIG. 5 is a diagram showing a connecting portion of sliding members of a telescopic telescoping device. FIG. 6 is a side view of the light unit. ill TV camera unit (2) Telescopic telescopic device (3) Dolly (4) Light unit (5) Auxiliary camera unit (6) Telescopic rod (force control unit α) Drive and control device Fig. 1 (5) Auxiliary camera Unit (6) (Shouting book service (7) Purchase unit (8) Reaction vessel αl Guide cage 09 Driving and 1ri Reduction Figure 2

Claims (1)

[Scope of Claims] 1. A container internal inspection device comprising the following (a) to (f). (a) A television camera unit (1) consisting of a television camera body that rotates vertically and horizontally and has aperture, focus, and magnification adjustment functions, and a light that rotates integrally with the television camera body. (c) A telescopic telescoping device (2) that supports the television camera unit and moves the position of the television camera unit up and down; (3) (d) A light unit (4) that has multiple lights and can be moved left/right and up/down (e) At the tip of the telescopic rod (6) an auxiliary television camera unit (5) consisting of a supported television camera and a light; (f) a control unit (7) that controls the television camera unit and the light unit and monitors images from the television camera;