JPS63184593A - Tank cleaning device - Google Patents

Abstract

PURPOSE:To eliminate yet-cleaned portions in a tank, by pivoting a telescopable/ tiltable boom having a nozzle to the lower end of a vertical boom rotatable horizontally, and remote controlling said tiltable boom, nozzle and vertical boom. CONSTITUTION:A device 1 for rotating a cleaning device body around a vertical axis is fixed to a tank cleaning hatch 031 and a vertical boom 2 is secured thereto. A telescopable/tiltable boom 3 is pivoted to the lower end of said vertical boom 2, and a nozzle, i.e. a portable cleaning machine 5, is coupled to the tip portion of the tiltable boom 3. When a tank is cleaned, a worker 28 moves a telescopable cylinder 8 through a power source/operating board 6 so as to telescope/tilt the tiltable boom 3, rotate the vertical boom 2 or regulate injection of pressure water. Consequently, occurrence of yet-cleaned portions on the inner face of the tank can be prevented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a tank cleaning device.

[Conventional technology]

For example, as a tank cleaning device for a chemical tanker, conventionally, as shown in the hull centerline tank 029 in the 6th hull partial cross-sectional view, a tank cleaning device with an inner diameter of 3 Q Q II that protrudes from the upper deck 030 is used. Hatsuchi 0
61, a fixed cleaning machine 062 is connected to the seawater valve or fresh water valve 033 via a hose 04a, and the nozzle 034 attached to the lower end of the fixed cleaning machine 032 is loosely rotated around the vertical axis and horizontal axis, respectively. A hose 04b whose upper end is connected to a seawater valve or fresh water valve 033 and a nozzle 05 attached to its lower end, as shown in the ship side tank 035 in the figure, The worker 036 lowers the water through the tank cleaning hatch 031 into the tank 035 on the ship's side, and while adjusting its vertical position, slowly rotates the pressurized water supply nozzle 05 around the vertical and horizontal axes, respectively. Some systems use the jet water to clean the inner surface of the chemical tank.

However, in such a device nozzle 05.03
Since the planar position of No. 4 is limited to just below the tank cleaning hatch 031, it is not possible to intensively clean the private parts, resulting in the following drawbacks.

(1) A cleaning residue is generated.

('2J To clean the remaining parts, as shown in Figure 6, worker 037 uses ladder 038, or worker 039 ascends and descends using longitudinal ribs 040. This increases man-hours, and there is a risk that the safety and health of workers may be compromised.

[Problem that the invention seeks to solve]

The present invention was proposed in view of these circumstances, and
No cleaning residue is left, reducing man-hours, improving worker safety,
The purpose is to provide a tank cleaning device that ensures health.

Means for Solving Problem c] To this end, the present invention provides a method of inserting a nozzle and its support member into the tank through a tank cleaning hatch, and spraying pressurized water from the nozzle onto the inner surface of the tank to clean the inside of the tank. In the tank cleaning device, there is provided a horizontal rotation device which is detachably attached to the upper end opening of the tank cleaning hatch, a vertical boom whose upper end is fixed coaxially to the horizontal rotation device, and an upper end which is attached to the lower end of the vertical boom. a telescoping elevating poom which is pivotably mounted and capable of elevating and retracting, a nozzle attached to the tip of the retractable elevating poom, the horizontal rotation device, the vertical boom, the telescopic elevating pool, and the nozzle. It is characterized by being equipped with a remote control panel that can be operated remotely from the top plate of the tank.

[For production]

With the above configuration, by remote control from the top plate of the tank, the telescopic elevating pool is aligned with the vertical boom and extended in a straight line. It is possible to adjust the pressure water injection.

〔Example〕

An embodiment in which the present invention is applied to a chemical tanker will be explained with reference to the drawings. Fig. 1 is a cross-sectional view of a part of the ship's hull showing how to use it, and Fig. 2 is a partially enlarged view of the device main body of Fig. 1 showing a state of right angle bending. Figures 3 and 3 are partially enlarged views showing the main body of the device shown in Figure 2 in a vertically extended state, and Figures 4 and 5 are horizontal sections taken along ■-rv and v-■ in Figure 3, respectively. It is a diagram.

In the above figure, the same symbols as in FIG. 6 indicate the same members as in the same figure. First, in FIG. 2 is a vertical boom whose upper end is fixed to the center of the rotation device 1 and extends downward by an appropriate length; 3 is a telescopic boom pivotally attached to the lower end of the vertical boom 2 by a hinge 3a; 4 is a hose whose base end is connected to the seawater valve or fresh water valve 033 and whose end extends to the tip of the telescopic elevation pool 3; 5 is a porta-pull cleaning machine connected to the end of the hose 4; 6 is the upper deck 030 is a self-propelled power source/operation panel that drives and controls the main body of the cleaning device.The power source/operation panel 6 is powered by an air motor and operated by hydraulic pressure. 7 is a hydraulic motor-driven hose reel of Dorijutsu, hose reel 7
is driven and controlled by the power source and operation panel O.

Next, in FIG. 2, 8 is a telescopic cylinder for extending and retracting the telescopic elevating poom 6, 9 is an elevating cylinder that moves the elevating hinge 10 for elevating the telescopic elevating poom 3, and 11 is a telescopic elevating cylinder. A stainless steel hanging rope 12 is used to prevent the poom 3 from bending, and 12 is a hydraulically driven hose length adjustment device attached to the tip of the telescoping elevating poom 3. The position will be adjusted.

14 is an endoscope detachably attached along the upper part of the vertical pool 2, and 15 and 16 are hanging ropes 11. This is a reel driven by a hydraulic motor that takes up and lets out the rope 13.

Furthermore, in Fig. 3, 17 is a stand with a gear rack fixed to the tank cleaning hatch 031 with bolts and nuts, 18 is a rotating motor with an output shaft protruding vertically downward from the outer periphery of the rotating device 1; Dynamic motor 18
A pinion 19 that meshes with a gear rack base 17 is fitted to the lower end of the output shaft.

20 is a ball bearing and airtight structure inserted between the gear rack base 17 and the rotating device 1; 21 is a rotating ball bearing device inserted between the lower part of the tank cleaning hatch 031 and the vertical pool 2; 22 and 23 are hydraulic motors that drive reels 15 and 16, respectively;
4 is a group of eight hydraulic hoses 25 for operating four actuators that progressively control the main body of the cleaning device.
26 is a drive device for the hose base to be moved in and out with a hydraulic motor, 27 is an eye fitting for lifting the rotating device 1, and 28 is a worker. .

When using such a device inside a chemical tank, first, as shown in Figure 1, extend the telescoping elevating poom 3 vertically across the ship's hose handling crane (not shown). In this state (see FIG. 3), hang the tank cleaning device main body through the tank cleaning hatch 031, fix the rotating device 1 to the tank cleaning hatch 031, and connect the hose 4 to the seawater valve or fresh water valve 033.

Then, the worker 28 moves the telescope cylinder 8 using the power source/operation panel 6 to extend and contract the telescopic elevating poom 3, moves the elevating cylinder 9 to raise and lower the telescopic elevating poom 3, and After the portable cleaning machine 5 is freely brought close to the inner surface of the chemical tank by adjusting the cable 11, pressurized water can be sprayed toward the chemical tank for cleaning.

At that time, the hull centerline tank 029, which has a simple internal shape,
When cleaning the ship's side tank 035, which has a complicated internal shape, the operator 28 performs all operations under manual control.
One worker will be assigned to check the cleaning status inside the tank.

Next, when removing the single-tank cleaning device main body from inside the chemical tank, perform the reverse procedure as described above.

In the above, by remote control from the upper deck 030,
The telescoping elevating pool 3 can be aligned with the vertical pool 2 and extended in a straight line, the telescoping elevating pool 3 can be extended and contracted, and elevated.
When the vertical pool 2 is rotated, the injection of pressurized water from the vertical pool cleaning machine 5 can be adjusted.

According to such a device, the following effects can be achieved.

(1) By aligning the telescoping elevating boom with the vertical boom and extending it in a straight line using remote control from the upper deck, the entire device can be inserted into the tank at once through the relatively small diameter tank cleaning hatch. Therefore, the number of man-hours required for preparing and cleaning up the cleaning work is reduced.

(21) By remote control from on the upper deck, the telescoping elevating pool is extended, retracted and raised, and the vertical pool is rotated, allowing the cleaning machine to freely approach the inner surface of the tank for direct cleaning. Since no cleaning residue is generated, there is no need for additional manual cleaning work by workers, which reduces work man-hours and improves worker safety.

Health can be ensured.

[Effects of the Invention] 4. In short, according to the present invention, a nozzle and its support member are inserted into the tank through a tank cleaning hatch, and pressurized water is sprayed from the nozzle onto the inner surface of the tank to clean the inside of the tank. In the cleaning device,
A rotating device in a horizontal plane that is detachable from the upper opening of the tank cleaning hatch, a vertical boom whose upper end is coaxially fixed to the rotating device in the horizontal plane, and a vertical boom whose upper end is pivoted to the lower end of the vertical boom so that it can be elevated and retracted. a freely telescoping elevating boom; a nozzle attached to the tip of the telescoping elevating boom;
By providing the above-mentioned horizontal plane rotation device, the above-mentioned vertical boom, the above-mentioned telescoping elevating boom, and a remote control panel that can remotely control the above-mentioned nozzle from the top plate of the tank, it is possible to reduce the amount of unwashed parts. The present invention is industrially extremely useful because it provides a tank cleaning device that does not generate any air pollution, requires less man-hours, and ensures the safety and health of workers.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a part of a ship body showing an embodiment in which the present invention is applied to a chemical tanker, Fig. 2 is a partially enlarged view showing the main body of the device shown in Fig. 1 in a right-angled bent state, and Fig. 3 is a partial cross-sectional view of the device shown in Fig. 2. FIGS. 4 and 5 are partially enlarged views showing the vertically extended state of the main body of the apparatus, and FIGS. 4 and 5 are IV-IV of FIG. 3, respectively. It is a horizontal cross-sectional view along v-■. FIG. 6 is a cross-sectional view of a portion of the hull showing how to use a known tank cleaning device. DESCRIPTION OF SYMBOLS 1... Rotation device, 2... Vertical boom, 3... Telescoping elevating boom, 3a... Hinge, 4... Hose, 5
... Vota pull type cleaning machine, 6... Power source and operation panel, 7... Hose reel, 8... Telescopic cylinder, 9... Elevation cylinder, 10... Elevation hinge, 11. ... Hanging rope, 12... Hose length adjustment device, 13... Cable, 14... Endoscope, 15j16
... Reel, 17... Gear rank stand, 18...
- Rotating motor, 19... Pinion, 20... Ball bearing and airtight structure, 21... Rotating ball bearing device, 22j23... Hydraulic motor, 24
... Hydraulic hose group inlet/outlet drive device, 25... Hydraulic hose group, 26... Hose base inlet/outlet drive device, 2
7... Eye hardware, 28... Workers, 029... Hull centerline tank, 030... Upper deck,
031...tank cleaning hatch, 033...
Seawater valve or freshwater valve, 035...Ship side tank. Agent Masa Tsukamoto, Patent Attorney Figure 1 Figure 3 Figure 6

Claims (1)

[Scope of Claims] A tank cleaning device that cleans the inside of the tank by inserting a nozzle and its support member into the tank through a tank cleaning hatch and spraying pressurized water from the nozzle onto the inner surface of the tank, wherein: A horizontal rotation device that can be attached and detached from the opening, a vertical boom whose upper end is fixed coaxially to the horizontal rotation device, and a telescopic boom whose upper end is pivoted to the lower end of the vertical boom and can be raised and retracted. The elevating boom, the nozzle attached to the tip of the telescopic elevating boom, the rotation device in the horizontal plane, the vertical boom, the telescopic elevating boom, and the nozzle are each remotely operated from the top plate of the tank. A tank cleaning device characterized in that it is equipped with a remote control panel that can perform the following operations.