JPH08304062A - Measurement facility for side plate thickness of floating roof type tank - Google Patents

Abstract

PURPOSE: To measure a tank side plate without spending much man-hour and performing a risky operation with a side plate thickness measuring device consisting of an upper running guide, a lower running guide, a measuring truck, a probe support device, and a cable take-up device. CONSTITUTION: An upper running guide 11 and a lower running guide 41 are connected by a wire rope 111 and a measuring truck 51 is attached to the wire rope 111 so that it can slide. A cable 101 connected to each equipment is led from the upper portion of the truck 51 and the cable 101 is taken up by a take-up device 81 via a cable guide 88 provided at the upper portion of a cable take-up device 81. A probe support device 71 is fixed to the lower portion of the measuring truck 51 and an ultrasonic probe and a paint sensor are provided inside. Using the ultrasonic probe and the paint film sensor provided in the measuring truck 51, the plate thickness and paint film thickness at nearly all portions of a side plate 2 of a floating roof type tank can be measured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side plate thickness measuring facility for a floating roof tank used for fuel storage, which is installed in a power plant, an oil refining plant or the like.

[0002]

2. Description of the Related Art In power plants, oil refineries, etc., large-capacity tanks are required to store large amounts of crude oil, petroleum products, etc. However, if a corn roof tank is used, it will be a tank for storing contents. Since the air containing petroleum products etc. on the top of is released to the atmosphere, the loss of products etc. is large,
In addition, because it is not preferable in terms of security, a floating roof tank in which the roof moves up and down according to the liquid level of the contents is often used. These tanks are exposed to wind and rain and may be corroded. Therefore, it is necessary to regularly check the loss condition of the plate thickness of the tanks.

With recent advances in measurement and inspection technology,
It is relatively easy to measure the plate thickness of a metal material used for a structure without breaking it. An ultrasonic thickness gauge is a typical measuring instrument. However, floating roof tanks used in power plants and the like usually have diameters of tens of meters and heights of tens of meters. Therefore, when inspecting the side plate of the tank, it takes a lot of man-hours for the worker to measure the plate thickness without leaving an instrument such as an ultrasonic thickness gauge, and dangerous work must be performed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and measures the side plate of a floating roof tank without spending a lot of man-hours and performing dangerous work. It is an object of the present invention to provide a measuring device for a side plate thickness of a floating roof tank that can be used.

[0005]

[Means for Solving the Problems and Their Actions] The present invention provides the following equipment (A) to (M) for measuring the side plate thickness of a floating roof tank.
The above object is achieved by constructing the above elements. That is, (A) a main body and a traveling device which is built in the main body and includes a DC motor, an electromagnetic brake, an electromagnetic clutch, a transmission mechanism and traveling wheels, and which engages with the top angle of the side plate top of the floating roof tank to travel. A rotary encoder which is built in the main body and rotates by being pressed against the top angle and which has a function of converting the number of rotations of the roller into a signal indicating the traveling distance of the roller; A wheel that rolls in pressure contact with the inner surface of the side plate of the floating roof tank, a wheel that rolls in pressure contact with the lower surface of the top angle of the floating roof tank, and a pair of wheels provided outside the main body. An upper running guide consisting of a wire guide. (B) For an obstacle location consisting of a saddle fixed to the top angle of the side plate top of the floating roof tank by a fixture, and a guide rail integrally fixed to the saddle and formed in a rectangular shape Rails with upper running guides. (C) A main body, four wheels built in the main body, which travel by engaging with guide rails above and below the upper traveling guide mounting rail for obstacles, and the upper traveling guide mounting rail for obstacles A DC motor attached to the motor, a chain gear connected to the motor via a transmission, and a chain gear that meshes with the chain gear mounted to the rail for mounting the upper traveling guide for obstacles and rotates. , And a traveling device having a chain, a part of which is fixed to the main body, and a pulley that is built in the upper traveling guide mounting rail for obstacles and that rotates by connecting to the traveling device, It is composed of a rotary encoder having a function of converting the rotation speed of a gear driven by a chain into a signal indicating the travel distance of the wheel, and a pair of wire guides provided outside the main body. Upper running guide for obstacles. (D) It is installed below the inside of the side plate of the floating roof tank, near the top of the floating roof, and has a main body, two electromagnets built in the main body, and a direct current built in the main body. An electromagnet lifting device having a motor, a transmission mechanism, and a ball screw shaft screwed into a nut mounted on the electromagnet; a pair of wire clamps mounted on the main body so as to be slidable in the vertical direction; A wire tension adjusting device having a power transmission mechanism and a ball screw shaft screwed into a nut attached to the wire clamp; and a built-in main body having four magnetic forces, which is one of the side plates of the floating roof tank. Wheels traveling in a horizontal direction while adsorbing to the side surface, connected to the wheels, a traveling device having a direct current motor and a transmission mechanism, and a roller that is pressed against the inner surface of the side plate of the floating roof tank to rotate. The A lower traveling guide comprising a rotary encoder having a function of converting the rotation speed of the roller into a signal indicating the traveling distance of the roller. (E) It is located at an intermediate portion between the upper traveling guide or the upper traveling guide for obstacles and the lower traveling guide, and the main body and the side plate of the floating roof tank are built into the main body and suck each other. 8 permanent magnets and 4 attached to the body
Wheels that run in the horizontal direction while contacting the inner surface of the side plate of the floating roof tank, and a traverse device that is connected to the wheels and that includes a DC motor and a transmission mechanism, and is built in the main body.
A traverse wheel lifting device equipped with a DC motor, a transmission mechanism, and a ball screw shaft that is screwed to a nut mounted on a base plate that holds the horizontally traveling wheels and the traverse device; It comprises traveling wheels that travel vertically while being pressed against the side plates of the roof tank, and rollers that travel vertically while contacting the inner surface of the side plates of the floating roof tank, and the rotation speed of the rollers is the traveling speed of the rollers. A rotary encoder for traveling having a function of converting into a signal indicating a distance, and a roller traveling in a horizontal direction by being in pressure contact with an inner surface of a side plate of the floating roof type tank, the number of revolutions of the roller being a traveling distance of the roller. A rotary encoder for traversing, which has a function of converting into a signal indicating, upper and lower wire guides, an ultrasonic thickness gauge built into the main body, and a coating film thickness measuring instrument, Catcher down channel selector and, measuring carriage comprising a couplant supply solenoid valve. (F) a support arm fixed to the main body of the measurement carriage, a plurality of probe support guides supported by the support arm so as to be horizontally slidable, a DC motor built in the support arm, A probe moving device including a transmission and a ball screw shaft screwed into a nut provided on the plurality of support guides, and one or a plurality of devices supported by the support guide through a gimbal mechanism. A probe supporting device comprising an ultrasonic probe and one or a plurality of coating film sensors. (G) is installed on a cable-carrying carriage for the cable winder, which will be described later, on the wind garter part of the side plate of the floating roof tank, and a cable drum for winding the cable for control, which will be described later.
A drive device equipped with a DC motor and a transmission device for driving the cable drum, a traverse device for moving the winding position of the cable in the axial direction of the drum, and a connection for connecting the wound cable end to a control cable for extraction. A cable winding device consisting of a device. (H) A trolley body, a traction motor provided on the lower part of the trolley body, equipped with a DC motor, a transmission device and traveling wheels, and traveling on a wind garter above the side plate of the floating roof tank, and parallel to the traveling axle. A rotary rotary encoder having a function of converting the rotation speed of the traveling wheel into a signal indicating the traveling distance of the traveling wheel, a contact medium tank mounted on the bogie body, and a contact medium. A cable winding traveling carriage comprising a pump and a pair of cable guides provided on a frame above the cable winding device and engaging with a control cable described later. (I) A cable for connecting to each measuring device mounted on the measuring carriage and transmitting the measurement signal to the outside or a signal from the outside to the device, which is taken out from the upper part of the measuring carriage. A cable wound around a cable drum of the cable winding device through a cable guide of the cable winding traveling carriage. (J) A wire rope that connects between the wire guide of the upper traveling guide or the upper traveling guide for obstacles and the wire clamp of the lower traveling guide via the upper and lower wire guides of the measuring carriage. (K) Installed on the wind garter above the side plate of the floating roof tank, it receives the measurement signals from the upper traveling guide, the upper traveling guide for obstacles, the cable winding device, and the measuring equipment of the measuring carriage. Or, an upper controller that sends a command to these devices to control the moving position, running speed, etc. of the upper running guide, the upper running guide for obstacles, the cable winding device, and the measuring carriage. (L) Installed on the roof of the floating roof tank, receives signals from each measuring device of the lower traveling guide or sends a command to these devices to control the moving position of the lower traveling guide, traveling speed, etc. The lower controller. (M) A personal computer connected to the upper controller to analyze and arrange the sent measurement signals, display an image and record measurement data, or send measurement conditions to the upper controller to control operation.

With such a structure, it is possible to measure the plate thickness of the side plate of an extremely large floating roof tank without using many man-hours and performing almost no dangerous work.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view exemplifying the side plate thickness measuring equipment of a floating roof tank according to the present invention, in which (a) is a front view,
(B) is a left side view. In the figure, a top angle 3 is provided on the top of the side plate 2 of the floating roof tank 1, and an upper traveling guide 11 travels on the top angle. The work wind garter 4 is provided outside the upper part of the side plate, and the cable winding device 81 mounted on the cable winding traveling carriage is installed thereon. A lower traveling guide 41 is installed near the floating roof 5 below the side plate 2. The upper traveling guide 11 and the lower traveling guide 41 are connected by a wire rope 111, and the upper traveling guide 11 and the lower traveling guide 41 are mutually subjected to a predetermined tension by a wire tension adjusting device provided in the lower traveling guide. I'm making an inquiry. Therefore, it is possible to adjust and hold the centers of the both so as to be vertical and on a straight line. The measurement carriage 51 is attached to the wire rope 111 so as to be slidable in the vertical direction along the wire rope 111. These three persons have a traveling device that can move in the horizontal direction in synchronization with each other, and can travel in the horizontal direction on the inner surface of the side plate 2 while always maintaining the vertical direction.

From the upper part of the measuring carriage 51, a cable 101 connected to each device in the measuring carriage is taken out.
01 is wound by the cable winding device 81 through a pair of cable guides 88 provided on the frame above the cable winding device 81. The measurement carriage 51 travels upward due to the cable being wound up, and travels downward due to its own weight when the cable is unwound. FIG. 2 is a perspective view of the upper part of the floating roof tank 1 as seen from outside and above, and FIG. 3 is a perspective view of the lower part as seen from inside and above (in FIG. 1, FIG. 2, and FIG. Some cables are omitted). In both figures, an upper controller 121 and a personal computer 141 are installed on the wind garter 4 above the floating roof tank. Also, on the floating roof 5 below the floating roof tank 1, the controller 1 for the lower part is provided.
31 is installed.

A probe supporting device 7 is provided below the measuring carriage 51.
1 are mounted therein, and one or more ultrasonic probes and coating film sensors are mounted therein. Since the measuring carriage can travel freely in the vertical and horizontal directions, the ultrasonic probe and the coating film sensor, and the ultrasonic thickness gauge and the coating film thickness measuring instrument included in the measuring carriage 51 are used. If used, it is possible to measure the plate thickness and the coating film thickness of almost all parts of the side plate 2 of the floating roof tank. This measurement data is sent to the upper controller 121 via the cable winding device 81 by the cable 101 together with the travel data of the upper traveling guide 11 and the measurement carriage 51, and is displayed as an image by the personal computer 141, and the measured data is recorded. In addition, the measurement conditions are sent in the reverse route to each device of the terminal and the like to control the operation. The traveling data and the like of the lower traveling guide 41 are sent to the lower controller 131, and further sent to the upper controller by wire. The operation of the lower traveling guide is controlled by the lower controller.

Below, based on the detailed drawings, some supplementary explanations will be given for each component and the like. FIG. 4 shows the upper traveling guide 11
FIG. 5 is a front view thereof, and FIG. 6 is a right side view thereof. 4 to 6, an upper traveling guide 11 includes a box-shaped main body 12, and a traveling device 1 housed in the main body.
3, rotary encoder 14, wire guide 17
Etc. The traveling device 13 includes a DC motor (traveling motor) 13a, a transmission mechanism 13b, and an electromagnetic clutch 13.
c, transmission gear 13d, traveling wheel 13e, electromagnetic brake 1
3f, and the traveling wheels 13e engage with the upper surface of the top angle 3 of the floating roof tank to travel. Body 1
A wheel 15 that is in pressure contact with the inside of the side plate 2 of the floating roof tank and a wheel 16 that is in pressure contact with the lower surface of the top angle 3 are attached to the unit 2. The rotary encoder 14 includes a roller 14 a, and the roller 14 a runs while being in pressure contact with the upper surface of the top angle 3. The rotary encoder has a function of converting the rotation of the roller into a signal indicating the traveling distance of the upper traveling guide. A wire rope 111 is attached to the wire guide 17 attached to the main body.
Are engaged.

A nozzle such as a fire extinguisher is attached to the inside of the side plate of the floating roof tank. When there is such an accessory, the above-described upper traveling guide may not be able to travel. In that case, the upper traveling guide mounting rail 21 for obstacles and the upper traveling guide 31 for obstacles are used. FIG. 7 is a diagram showing both of these, (A) is a plan view and (B) is a front view. In the figure, the upper traveling guide mounting rail 21 for obstacles is composed of a plurality of saddles 22 (four in the illustrated example) and a rectangular frame-shaped guide rail 23 integrally fixed to the saddles. There is. The saddle 22 is fixed to the top angle 3 with an appropriate fixing tool (see FIG. 8 (a view from the arrow P in FIG. 7B)).
The upper traveling guide 31 for an obstacle is a rectangular frame-shaped main body 3
2. Four wheels 33 attached to the main body and traveling by engaging with the upper and lower parts of the guide rail 23, a traveling device 34, a chain 37, a rotary encoder 35, and a wire guide 36. The traveling device 34 includes a DC motor mounted on the upper traveling guide mounting rail 21 for obstacles, a transmission, and a chain gear connected to the chain. The chain 37 includes the chain gear and the upper portion for obstacles. It rotates by meshing with a chain gear attached to the travel guide mounting rail, and a part of it is fixed to the main body 32. Therefore, when the DC motor of the traveling device 34 is rotated, the main body 32 travels in the left-right direction in the figure as the chain 37 rotates. FIG. 9 is a diagram showing the traveling device 34, and FIG.
Reference numeral 0 represents the rotary encoder 35.

FIG. 11 ((a) is a plan view, (b) is a front view) is a view showing the lower traveling guide 41, and FIG. 12 is a right side view thereof. In both figures, the lower traveling guide comprises a box-shaped main body 42, two electromagnets 43, an electromagnet lifting device 44, a wire clamp 45, a wire tension adjusting device 46, a rotary encoder 47, and a traveling device 48. FIG. 13 is a view taken along the line Q-Q in FIG. 11B, FIG. 14 is a view taken along the line R-R, and FIG. 15 is a view taken along the line S-S in FIG. It is a figure which shows the detail of the apparatus 46, the electromagnet raising / lowering apparatus 44, and the traveling apparatus 48. 13 to 15, the traveling motor 48a of the traveling device drives the worm wheel 48c via the transmission gear 48b, and the traveling wheel 4 which is coaxial with the worm wheel 48c.
8d is being driven. Since it is necessary that the lower running guide 41 and the upper running guide 11 or the upper running guide 31 for an obstacle point are exactly in the same vertical direction, the vertical swing, not shown here, plumb bob, transit, etc. It is necessary to use the laser to align the heart, but using laser light enables extremely accurate alignment. In order to maintain the strict agreement of the three hearts of the lower traveling guide 41 and the upper traveling guide 11 or the upper traveling guide 31 for obstacles and the measuring carriage 51, an electromagnetic lifting device is used as described below. After the electromagnet is attracted to the side plate, the wire rope adjusting device must be used to apply an appropriate tension to the wire rope 111. That is, when the electromagnet lifting device is operated, the rotation of the motor (DC motor) (not shown) is transmitted to the spur gear 44a via a transmission mechanism (not shown) and is provided coaxially with this gear. With the ball screw shaft 44b, the electromagnet holding metal fitting 44c descends along the guide 44d (see FIG. 14) attached to the main body (moves horizontally in the attached state), and the electromagnet can be brought into close contact with the side plate. If the wire tension adjusting motor 46a is operated in that state, the rotation is transmitted to the ball screw shaft 46c via the transmission mechanism 46b, the wire clamp 45 slides, and the wire rope 1
The tension of 11 is adjusted.

FIG. 16 is a plan view showing the measuring carriage 51, FIG.
7 is a front view thereof, FIG. 18A is a rear view thereof, and FIG. 18B is a right side view of the state in which the probe supporting device is removed. FIG.
In FIG. 18, a measuring carriage 51 travels in a horizontal direction while being brought into pressure contact with an inner surface of a side plate 2 attached to the main body 52, a box-shaped main body 52, eight plate-like permanent magnets 53 and the main body. Four traverse wheels 54, a traverse device 55 for driving the traverse wheels, a traverse wheel elevating device 56 for elevating the traverse device and the traverse wheels, four traveling wheels 57, a traveling rotary encoder 58, and a traverse rotary encoder. 59, a wire guide 60. A cable outlet 61 is provided on one surface of the main body,
Although not shown in detail in the inside of the main body, an ultrasonic thickness gauge, a plurality of CH channel selectors, a coating film thickness measuring device, and a couplant supply solenoid valve are housed. The traverse wheel lifting device 56 includes a DC motor, a transmission device, and a ball screw shaft, and its operation and the like are almost the same as those of the electromagnet lifting device described above. The vertical movement (travel) of the measurement carriage 51 is performed by the cable winding and unwinding of the cable winding device 81 as described above, in which case the traverse wheel 54 is at a position away from the side plate 2. (Fig. 1
7). However, when traversing, the traverse wheel lifting device 56
By this action, the transverse wheel is brought into close contact with the side plate, and further the traveling wheel is moved in the horizontal direction against the magnetic force of the permanent magnet until the traveling wheel separates from the side plate.

FIG. 19 is a front view of the probe support device 71, FIG. 20 is a plan view thereof, and FIG. 21 is a side view. 19 to 21, the probe support device 71 is attached to one surface of the measurement carriage 51 (the surface opposite to the surface on which the cable outlet 61 is provided) (see FIG. 16) and supports it. It comprises an arm 72, a probe support guide 73, and a probe moving device 74. The probe moving device 74 is a DC motor 74.
c, a transmission device 74a, and a ball screw shaft 74b (a part of which is shown), and the probe support guide 73 moves as the ball screw shaft rotates. One or more (10 in this example) ultrasonic probe and one or more (5 in this example) ultrasonic probe are provided in the probe support guide 73 via a gimbal mechanism (not shown). Individual) A coating film sensor is attached.

22 (a) is a plan view, FIG. 22 (b) is a front view, FIG. 24 is a right side view, and FIG. 23 is a schematic view showing a cross section of the drum. Figure 2
2 to 24, the cable winding device 81 includes a frame 8a made of a pipe and a frame 8 including two end plates 82b.
2. A cable drum 83 including a shaft 83a rotatably supported on an end plate and a drum 83b attached to the shaft,
From a connecting device 84 that is built in the cable drum and that includes a terminal block 84a and a slip ring 84b, a drive device 85 that includes a geared motor and a transmission device, and a traverse device 86 that moves the winding position of the cable in the axial direction. Made of The cable 101 is wound on a rotating cable drum by a driving device, and at that time, it is wound in order in the axial direction of the drum by the action of the traverse device. Furthermore, due to the action of the slip ring of the connection device, it is possible to read the signal sent from each device through the tip of the cable even during winding (or rewinding), and the read signal can be passed through the terminal block. It can be taken out. It is also possible to send a signal from the outside to each device.

FIG. 25 is a view showing a traveling vehicle 91 for cable winding, (a) is a plan view, (b) is a front view, and FIG. 26 is a right side view thereof. In both figures, the cable winding traveling carriage 91 comprises a carriage main body 92, a traveling device 93, a traveling rotary encoder (not shown), a couplant tank 94, and a couplant pump (not shown). It is installed on the wind girder 4 of the floating roof tank and moves on it. A cable winding device 81 is mounted on the carriage body 92. A cable guide frame 87 having a gate-shaped structure is attached to the frame 82 of the cable winder by an appropriate mounting metal fitting, and 1 is attached thereto.
A pair of cable guides 88 are attached. The cable 101 from the measuring carriage 51 is guided to the cable winding device 81 via this cable guide.

[0017]

INDUSTRIAL APPLICABILITY The present invention is for measuring the side plate thickness which is composed of an upper traveling guide, a lower traveling guide, a measuring carriage, a probe supporting device, a cable winding device, etc. for measuring the side plate of a floating roof tank. By using the equipment, the following excellent effects are exhibited. It is possible to measure, inspect, and record the thickness of the side plate of a huge floating roof tank with a diameter of several tens of meters and a height of several tens of meters from a remote location without the inspector directly approaching the side plate. There is no need for a scaffold to hang because the inspector does not have to come to the side plate with a heavy inspection tool. Therefore, the inspection cost is low and the inspection period can be shortened. In addition, work safety can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a schematic view illustrating a side plate thickness measuring facility of a floating roof tank according to the present invention, in which (a) is a front view and (b) is a side view.

FIG. 2 is a perspective view of the upper part of the floating roof tank as seen from outside and above.

FIG. 3 is a perspective view of the lower portion of the floating roof tank as seen from above inside.

FIG. 4 is a plan view of an upper traveling guide.

FIG. 5 is a front view of an upper traveling guide.

FIG. 6 is a right side view of the upper traveling guide.

7A and 7B are diagrams showing an upper traveling guide mounting rail for an obstacle part and an upper traveling guide for an obstacle part, wherein (A) is a plan view and (B) is a front view.

FIG. 8 is a view on arrow P of FIG.

FIG. 9 is a view showing a traveling device of an upper traveling guide for an obstacle part.

FIG. 10 is a diagram showing a rotary encoder of an upper traveling guide for an obstacle part.

FIG. 11 is a diagram showing a lower traveling guide, in which (a) is a plan view and (b) is a front view.

FIG. 12 is a right side view of the lower traveling guide.

13 is a cross-sectional view taken along the line QQ in FIG.

FIG. 14 is an arrow view of the RR cross section in FIG.

15 is a cross-sectional view taken along the line S-S in FIG.

FIG. 16 is a plan view showing a measurement carriage.

FIG. 17 is a front view showing a measurement carriage.

FIG. 18 is a view showing a measuring carriage, (a) is a rear view,
(B) is a right side view of the probe supporting device removed.

FIG. 19 is a front view of the probe support device.

FIG. 20 is a plan view of the probe support device.

FIG. 21 is a side view of the probe support device.

FIG. 22 is a diagram showing a cable winding device, in which (a) is a plan view and (b) is a front view.

FIG. 23 is a view showing a cross section of a drum of the cable winding device.

FIG. 24 is a right side view of the cable winding device.

FIG. 25 is a view showing a traveling vehicle for winding the cable,
(A) is a plan view and (B) is a front view.

FIG. 26 is a right side view of the traveling vehicle for winding the cable.

[Explanation of symbols]

1 Floating roof tank 2 Side plate 3 Top angle 4 Wind girder 5 Floating roof 11 Upper traveling guide 12 Main body 13 Traveling device 14 Rotary encoder 15 Wheels 16
Wheels 17 Wire guides 21 Upper traveling guide mounting rails for obstacles 22
Saddle 23 Guide rail 31 Upper running guide for obstacles 32 Main body
33 wheels 34 traveling device 35 rotary encoder
36 Wire Guide 37 Chain 41 Lower Travel Guide 42 Main Body 43 Electromagnet 44 Electromagnet Lifting Device 45 Wire Clamp 46 Wire Tension Adjusting Device 47 Rotary Encoder 48 Traveling Device 51 Measuring Cart 52 Main Body 53 Permanent Magnet
54 Traverse Wheel 55 Traverse Device 56 Traverse Wheel Lifting Device 57 Travel Wheel 58 Travel Rotary Encoder 59 Traverse Rotary Encoder 60 Wire Guide 61 Cable Exit 71 Probe Support 72 Support Arm 73
Transducer support guide 74 Transducer moving device 81 Cable winding device 82 Frame 83 Cable drum 84 Connecting device 85 Drive device 86 Traverse device 87 Cable guide frame 88 Cable guide 91 Cable winding traveling carriage 92 Truck body
93 Traveling device 94 Contact medium tank 101 Cable 111 Wire rope 12
1 Upper controller 131 Lower controller 141 Personal computer

Claims (1)

[Claims] 1. The following (A) to (M) elements are included, and the thickness of the side plate and coating film of the floating roof tank is inspected from a remote location, and the measurement records are analyzed and recorded. A facility for measuring the side plate thickness of a floating roof tank, which is characterized by creating and storing. (A) a main body and a built-in main body, a direct current motor, an electromagnetic brake, an electromagnetic clutch, a transmission mechanism and traveling wheels, and a traveling device that travels by engaging with the top angle of the side plate top of the floating roof tank. A rotary encoder, which is built in the main body, has a roller that rotates in pressure contact with the top angle, and has a function of converting the number of rotations of the roller into a signal indicating the traveling distance of the roller; and the floating roof attached to the main body. Wheel that rolls in pressure contact with the inner surface of the side plate of the floating tank, wheel that rolls in pressure contact with the lower surface of the top angle of the floating roof tank, and a pair of wire guides provided outside the main body An upper driving guide consisting of. (B) For an obstacle location consisting of a saddle fixed to the top angle of the side plate top of the floating roof tank by a fixture, and a guide rail integrally fixed to the saddle and formed in a rectangular shape Rails with upper running guides. (C) A main body, four wheels built in the main body, which travel by engaging with guide rails above and below the upper traveling guide mounting rail for obstacles, and the upper traveling guide mounting rail for obstacles A DC motor attached to the motor, a chain gear connected to the motor via a transmission, and a chain gear that meshes with the chain gear mounted to the rail for mounting the upper traveling guide for obstacles and rotates. , And a traveling device having a chain, a part of which is fixed to the main body, and a pulley that is built in the upper traveling guide mounting rail for obstacles and that rotates by connecting to the traveling device, It is composed of a rotary encoder having a function of converting the rotation speed of a gear driven by a chain into a signal indicating the travel distance of the wheel, and a pair of wire guides provided outside the main body. Upper running guide for obstacles. (D) It is installed below the inside of the side plate of the floating roof tank, near the top of the floating roof, and has a main body, two electromagnets built in the main body, and a direct current built in the main body. An electromagnet lifting device having a motor, a transmission mechanism, and a ball screw shaft screwed into a nut mounted on the electromagnet; a pair of wire clamps mounted on the main body so as to be slidable in the vertical direction; A wire tension adjusting device having a power transmission mechanism and a ball screw shaft screwed into a nut attached to the wire clamp; and a built-in main body having four magnetic forces, which is one of the side plates of the floating roof tank. Wheels traveling in a horizontal direction while adsorbing to the side surface, connected to the wheels, a traveling device having a direct current motor and a transmission mechanism, and a roller that is pressed against the inner surface of the side plate of the floating roof tank to rotate. The A lower traveling guide comprising a rotary encoder having a function of converting the rotation speed of the roller into a signal indicating the traveling distance of the roller. (E) It is located at an intermediate portion between the upper traveling guide or the upper traveling guide for obstacles and the lower traveling guide, and the main body and the side plate of the floating roof tank are built into the main body and suck each other. 8 permanent magnets and 4 attached to the body
Wheels that run in the horizontal direction while contacting the inner surface of the side plate of the floating roof tank, and a traverse device that is connected to the wheels and that includes a DC motor and a transmission mechanism, and is built in the main body.
A traverse wheel lifting device equipped with a DC motor, a transmission mechanism, and a ball screw shaft that is screwed to a nut mounted on a base plate that holds the horizontally traveling wheels and the traverse device; It comprises traveling wheels that travel vertically while being pressed against the side plates of the roof tank, and rollers that travel vertically while contacting the inner surface of the side plates of the floating roof tank, and the rotation speed of the rollers is the traveling speed of the rollers. A rotary encoder for traveling having a function of converting into a signal indicating a distance, and a roller traveling in a horizontal direction by being in pressure contact with an inner surface of a side plate of the floating roof type tank, the number of revolutions of the roller being a traveling distance of the roller. A rotary encoder for traversing, which has a function of converting into a signal indicating, upper and lower wire guides, an ultrasonic thickness gauge built into the main body, and a coating film thickness measuring instrument, Catcher down channel selector and, measuring carriage comprising a couplant supply solenoid valve. (F) a support arm fixed to the main body of the measurement carriage, a plurality of probe support guides supported by the support arm so as to be horizontally slidable, a DC motor built in the support arm, A probe moving device including a transmission and a ball screw shaft screwed into a nut provided on the plurality of support guides, and one or a plurality of devices supported by the support guide through a gimbal mechanism. A probe supporting device comprising an ultrasonic probe and one or a plurality of coating film sensors. (G) is installed on a cable-carrying carriage for the cable winder, which will be described later, on the wind garter part of the side plate of the floating roof tank, and a cable drum for winding the cable for control, which will be described later.
A drive device equipped with a DC motor and a transmission device for driving the cable drum, a traverse device for moving the winding position of the cable in the axial direction of the drum, and a connection for connecting the wound cable end to a control cable for extraction. A cable winding device consisting of a device. (H) A trolley body, a traction motor provided on the lower part of the trolley body, equipped with a DC motor, a transmission device and traveling wheels, and traveling on a wind garter above the side plate of the floating roof tank, and parallel to the traveling axle. A rotary rotary encoder having a function of converting the rotation speed of the traveling wheel into a signal indicating the traveling distance of the traveling wheel, a contact medium tank mounted on the bogie body, and a contact medium. A cable winding traveling carriage comprising a pump and a pair of cable guides provided on a frame above the cable winding device and engaging with a control cable described later. (I) A cable for connecting to each measuring device mounted on the measuring carriage and transmitting the measurement signal to the outside or a signal from the outside to the device, which is taken out from the upper part of the measuring carriage. A cable wound around a cable drum of the cable winding device through a cable guide of the cable winding traveling carriage. (J) A wire rope that connects between the wire guide of the upper traveling guide or the upper traveling guide for obstacles and the wire clamp of the lower traveling guide via the upper and lower wire guides of the measuring carriage. (K) Installed on the wind garter above the side plate of the floating roof tank, it receives the measurement signals from the upper traveling guide, the upper traveling guide for obstacles, the cable winding device, and the measuring equipment of the measuring carriage. Or, an upper controller that sends a command to these devices to control the moving position, running speed, etc. of the upper running guide, the upper running guide for obstacles, the cable winding device, and the measuring carriage. (L) Installed on the roof of the floating roof tank, receives signals from each measuring device of the lower traveling guide or sends a command to these devices to control the moving position of the lower traveling guide, traveling speed, etc. The lower controller. (M) A personal computer connected to the upper controller to analyze and arrange the sent measurement signals, display an image and record measurement data, or send measurement conditions to the upper controller to control operation.