JPH0742543Y2 - Fluid path wall cleaning device - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a cleaning device, and more specifically, it is firmly attached to the inner wall of a water discharge channel having a vertically long rectangular cross section in a thermal power plant or the like. The present invention relates to a cleaning device that is preferably used when cleaning and removing solidified substances such as hot water and water stains and shellfish.

[Prior art and problems to be solved]

Conventionally, in a water discharge channel of a thermal power plant, etc., if water scales adhere to the inner wall or shellfish such as barnacles that have invaded due to the ebb and flow of the sea have settled, the water discharge function will deteriorate or be damaged. Therefore, it is necessary to periodically remove and wash the solidified substances such as hot water and scales and shellfish that are firmly attached.

By the way, in order to wash and remove such hot water and scales and shellfish, a method is employed in which an operator enters the drained water discharge channel and removes manually or using a scraping device. However, this kind of water discharge channel generally has a width of 30 cm to 50 cm and a depth of 50 cm to 20 with or without a lid.
Since it is often formed as a vertically long rectangular cross section of about 0 cm, it not only reduces work efficiency but also creates a place where washing and removal cannot be done manually, or even kills or is harmful to the removed shellfish. There was a problem that workers were poisoned by the gas.

Thus, for example, a self-propelled cleaning device in which a traveling device is movably arranged in a fluid channel such as a water discharge channel and a nozzle device that swivels at the front part of the device by utilizing a fluid ejection reaction force is used. Although it has been considered to wash and remove with water, the current situation is that it is not possible to practically use it as a compacted device that can efficiently remove and clean the hot water and scales and shellfish that have adhered firmly. Is.

[Means for solving problems]

Therefore, in this invention, a self-propelled cleaning device in which a traveling device is movably arranged in a fluid channel such as a water discharge channel and a nozzle device that swirls by a reaction force of a fluid jet is mounted in a front portion of the device. In, a swirl head is rotatably attached to a nozzle body connected to a high-pressure water supply system to form a swirl jet nozzle device, and a plurality of pairs of jet ports provided in the swirl head are attached to an inner wall surface of a fluid passage. Are provided at different acute angles and symmetrically with respect to the circumferential direction for each pair and deviated by a predetermined angle, and further, the swirl injection nozzle device is vertically moved by combining a pair of drive motors and feed screws. By adopting a configuration that is attached to the operation mechanism formed so as to obtain, the swirling injection nozzle device is moved up and down as appropriate according to the depth of the water discharge channel to remove firmly adhered hot water and scales and shellfish. Fine cleaning operation is obtained by the efficiently yet safely performed so.

[Action]

In the fluid channel wall cleaning device according to the present invention, the swirl jet nozzle device mounted on the traveling device removes and cleans the adhering substances on the inner wall of the water discharge channel by injecting high-pressure fluid. This is performed by appropriately moving the device up and down by an operating mechanism according to the depth of the fluid passage.

〔Example〕

Next, as a preferred embodiment of the fluid channel wall cleaning device according to the present invention, a cleaning device for the inner wall of the water discharge channel of a thermal power plant will be exemplified.
The following is a detailed description with reference to the accompanying drawings.

1 and 2, the cleaning device 10 according to the present invention
Is provided with a traveling device 12 movably arranged in a water discharge channel A having a vertically long rectangular cross section, and a water jet injection nozzle device 14 is mounted at the center of the front part of the traveling device 12 in the traveling direction. It is basically configured by forming the nozzle device 14 so that it can be appropriately moved in the vertical direction by an operation mechanism 16 that is a combination of a pair of drive motors and a feed screw.

The traveling device 12 includes a drive device 22 including a drive motor 18 and a speed reducer 20 at a rear portion of the device body 10a, and travels by remotely operating the wheels 24 from the outside of the water discharge channel A via the drive device 22. It is configured to control.

Further, the water jet injection nozzle device 14 mounted on the traveling device 12 is supplied with high-pressure water from the high-pressure water generation device 26 installed outside the water discharge channel A through the flexible water supply pipe 28. However, the water jet jet nozzle device 14 is configured as a swirl nozzle device 30 that jets the high pressure water supplied from the flexible water pipe 28 while swirling.

That is, the swirling nozzle device 30 is shown in FIGS.
As shown in the figure, it has a swivel head 32 rotatably attached to a nozzle device body 30a attached to the operation mechanism 16 via a water supply pipe 28, and the swivel head 32 has the swivel head 32a. Of the high-pressure water supply passage 34 in the above two pairs of injection water passages 3 which are biased at angles of 60 ° and 90 °, respectively.
6, 36, 38, 38 are provided so as to face each other in pairs, and the high-pressure water jetting direction C of the jet nozzle 40 attached to the tip end of each of these jetting water passages 36, 36, 38, 38 in the circumferential direction. Symmetrically,
For example, it is configured by being biased twice.

In this case, as means for symmetrically biasing the high-pressure water jetting direction C in the circumferential direction, the mounting surface 42 of each jetting nozzle 40 is
42a, 42b, 42c, 42d are divided into four parts, and the facing surface parts 42a and 42c, 42b and 42d are symmetrically inclined by 2 degrees, and these surface parts 42a, 42b, 42c, 42d and the injection nozzle 40 are
It is configured by making the injection axis D of No. 1 at right angles.

Further, in FIG. 2, reference numeral 44 is an attitude control mechanism for preventing the cleaning device 10 from tipping over or tilting in the water guide channel A. This attitude control mechanism 44 is used for the water guide channel A. The device 10 is held upright by constantly elastically pressing the guide roller 46 against the inner wall.

Next, the procedure for removing the deposit E, such as hot water and scales and shellfish, which is strongly adhered and solidified on the inner wall of the water discharge channel A, using the cleaning apparatus 10 configured as described above will be described.

First, the washing device 10 including the traveling device 12 is loaded into the water discharge channel A, and the posture control mechanism 44 holds the washing device 10 upright.

Next, the operation mechanism 16 is operated to set and hold the water jet injection nozzle device 14 at a predetermined height. When the depth of the water discharge channel A is not so deep, the water jet injection nozzle device 14 may be held substantially in the center. When it is deep, the operation mechanism 16 is operated to discharge the water jet injection nozzle device 14. The water jet injection nozzle device 14 is set to be vertically moved in synchronization with the cleaning operation of the inner wall of the water channel A.

Then, by driving the high-pressure water generator 26, for example, 200 kg /
The high-pressure water pressurized to about cm ² is jetted to the inner wall (adherent matter E) of the water guide / drainage channel A through the water pipe 28 and the swirling nozzle device 30 (see FIG. 5). In this case, in the high-pressure water jetted from the jet port of each jet nozzle 40, the jet water passages 36, 36 and 38, 38 are deviated at an angle of 60 degrees and 90 degrees with respect to the axis B of the high-pressure water supply passage 34. Not only is the jet direction C symmetrical with respect to the circumferential direction but also deviated by a predetermined angle, the swiveling head 32 rotates at a high speed due to the jet reaction force, so that the strongly adhered deposit E is washed. The high-pressure water sprayed as the apparatus 10 moves will be stripped off and washed away. It should be noted that the deposit E that has been stripped off by the high-pressure jet water and has flowed down to the bottom of the water discharge channel may be appropriately disposed of.

[Effect of device]

As described above, according to the cleaning device of the present invention, the jet reaction force of the high-pressure water sent to the nozzle device is used to perform swirling jets over a wide range to a certain degree, so that a general fluid is used. Not only the channel but also the hot water and scales and shellfish that are firmly adhered to the inner wall of the headrace can not only be efficiently cleaned and removed, but also the worker can enter the narrow headrace with a vertically long rectangular cross section. Since there is no need to work, it is possible to reliably prevent the occurrence of poisoning accidents. Further, since the swirl injection nozzle device is small and there are no movable parts between the members, the swirl injection nozzle device has various advantages such as high durability and compactness as a whole, and its practical effect is extremely large.

Although the preferred embodiment of the cleaning apparatus according to the present invention has been described above, the present invention is not limited to this embodiment, and includes, for example, a water jet injection nozzle device and an operating mechanism mounted on a traveling device. Various configurations are possible without departing from the spirit of the present invention, such as a structure in which the vertical movement can be adjusted to accommodate a fluid path whose depth changes sequentially, or a swiveling nozzle device can be appropriately tilted and operated. Of course, it can be modified.

[Brief description of drawings]

1 is a side view of a preferred embodiment of the cleaning apparatus according to the present invention, FIG. 2 is a front view showing the relationship between the cleaning apparatus of FIG. 1 and the inner wall of the drainage channel, and FIG. 1 is a sectional explanatory view of a swirling nozzle device used in the cleaning device of FIG. 1, FIG. 4 is a schematic perspective view of the swirling nozzle device shown in FIG. 3, and FIG. 5 is a device shown in FIG. It is explanatory drawing at the time of removing a kimono. 10: Washing device, 12: Traveling device, 16: Operating mechanism, 14
...... Water jet injection nozzle device, 22 …… Drive device, 26 …… High pressure water generator, 28 …… Flexible water pipe, 30 ・ ・ ・
… Swirl nozzle device, 32 …… Swirl head, 34 …… High-pressure water supply passage, 40 …… Injection nozzle, 36,38 …… Injection water passage, 44 ……
Injection nozzle.

Claims (1)

[Scope of utility model registration request] 1. A self-propelled cleaning device in which a traveling device is movably arranged in a fluid channel such as a water discharge channel, and a nozzle device which is swung by a reaction force of fluid ejection is mounted on the front portion of the device. , A swirl jet nozzle device is formed by rotatably mounting a swirl head with respect to a nozzle body connected to a high-pressure water supply system, and a plurality of pairs of jet ports provided in the swirl head are formed on an inner wall surface of a fluid passage. The pairs are provided at different acute angles and symmetrically with respect to the circumferential direction for each pair, and are deviated by a predetermined angle. Further, the swirl injection nozzle device can be vertically moved by combining a pair of drive motors and feed screws. A fluid path wall cleaning device characterized by being attached to an operation mechanism configured as described above.