JPS63194788A - Washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cleaning device, and more particularly to a cleaning device suitable for cleaning a tube assembly of a heat exchanger using high-pressure cleaning water.

(Prior Art) In heat exchangers used in petrochemical plants and the like, duplex aggregates are periodically discharged from the heat exchanger to the outside and cleaned with high-pressure cleaning water. This duplex assembly can accommodate heavy objects up to 2 m in diameter, 10 m in length, and several tons in weight.

Conventionally, when cleaning such tube assemblies with high-pressure washing water, the duplex assembly is placed on sleepers using a crane, and a worker uses a high-pressure water injection nozzle in hand to wash the duplex assembly over the duplex assembly. This was done manually by riding on a car, and once a portion of the tube was cleaned, a tow truck was used to rotate the tube assembly a predetermined amount to clean the remaining portion.

Furthermore, as a solution to the above-mentioned manual work, an automatic cleaning device has been proposed that fully automatically rotates the tube assembly, moves the high-pressure water jet nozzle, etc.

(Problems to be Solved by the Invention) However, in the conventional manual cleaning described above, a worker climbs on top of the tube assembly and performs the cleaning work, so the worker may slip due to deposits such as sludge. Easy to use, high-pressure water, especially recently, 200 to 500
Since ultra-high pressure water of Kg/cnt is used, the jetting reaction force of the cleaning water jetting nozzle reaches 15 to 40'j, which is extremely dangerous. In addition, cleaning efficiency is low because workers can only hold one cleaning water jet nozzle, and the direction of the cleaning water jetting is not constant, so the sludge blown away by the cleaning water re-adheres to the cleaned area, causing the problem. Since the nozzle is sprayed from the side in order to remove the dirt, the dirt is scattered over a wide area, resulting in a problem that a large cleaning space is required.

There was also the inconvenience that a tow truck had to be kept on standby in order to rotate the tube assembly.

Furthermore, automatic cleaning equipment has the problem that the heat exchanger is cleaned once every few years or once or twice a year, making expensive equipment impractical.

(Means for solving the problems) The present invention has been made in view of the above problems, and includes:
a mount having a pair of running rails and support rolls for rotatably placing a pair of objects to be cleaned parallel to the running rails between the running rails; and a pair of wheels that run on the running rails. a gate-shaped frame configured by establishing a vertical member connected to a crosspiece member at the upper end of a base; a nozzle support provided vertically movably between the vertical members; and a vertically movable vertical member provided on the nozzle support A nozzle body for injecting high-pressure water that is suspended, a rotary drive means for rotationally driving the support roll, and a moving means for moving the portal frame. It is.

(Function) In the present invention, a portal frame having a high-pressure water cleaning nozzle runs over an object to be cleaned that is placed on a rotatable support roll while straddling the object to be cleaned.

(Example) The present invention will be explained based on illustrated embodiments.

In the figure, reference numeral 1 denotes a frame with running rails 2a on both sides,
2b, and a crosspiece member 3 is provided between these traveling rails 2a and 2b.
a to 3d are spanned to fix the traveling rails 2a and 2b in a parallel state. Support rolls 4a and 4b are provided in parallel between the traveling rails 2a and 2b, and are supported by bearings 5, 5, . . . fixed to each of the crosspiece members 3a to 3d. There is. Note that this support roll 4a.

The middle part of 4b is the shaft 4a' of support rolls 4a and 4b.
, 4b' itself, so that when a tube assembly, which will be described later, is placed on the support rolls 4a and 4b, a gap d is formed between the tube assembly and the shaft.

Reference numerals 6a and 6b are rotary drive means consisting of air motors, which rotationally drive the support rolls 4a and 4b via sprockets 7a and 7b provided on the shafts 4a' and 4b'. can be rotated in the same direction and at the same speed.

In the figure, 8 is a gate-shaped frame, and vertical members 10a and 10a' extend upward from a pair of left and right bases 9a and 9b.
, 10b, 10b' are established, and a crosspiece member 11 is connected to the upper end thereof, so that the entire structure has a gate shape.

Further, in the longitudinal direction of the bases 9a and 9b, there are wheels with tires 13a, 13a', 13a'' and 13b, respectively.
13b'13b'', and inside thereof, iron wheels 14 having a smaller diameter than the wheels with tires are provided so as to be able to run on the above-mentioned running rails 2a and 2b, respectively.
a, 14a' and 14b, 14b' are provided.

7>e, among the above wheels, 13a' and 13b'.

14a and 14b are fixed to the same rotating shaft 15.

Reference numeral 16 denotes a moving means consisting of an air motor for moving the gate-shaped frame 8, and is capable of rotating the rotating shaft 15.

Reference numeral 17 is a nozzle main body, and a large number of downward nozzles 18
．． 18..., and this nozzle body 17 is suspended on a nozzle support 20 which can be moved up and down between the left and right vertical members 10a, 10a', 10b, 10b' as shown by arrow a in FIG. 2 by an air motor 19. It is also provided movably to the left and right of the nozzle support 20 (see the arrows in FIG. 3). Although not shown, the nozzle body 17
is connected to a high-pressure water supply means consisting of a high-pressure pump with a pressure-resistant hose.

In the figure, reference numeral 21 denotes a shielding plate made of plywood provided under the rolls 4a and 4b of the pedestal 1.
2a, 12b side) are inclined so that they are lower, and 22 is a platform on which the operator stands.

In the above embodiment, when cleaning, the pedestal 1 and the gate-shaped frame 8 are transported by truck near the heat exchanger, the pedestal 1 is first placed on the ground (concrete surface) G, and then the pedestal 1 is moved Wheels 14a, 14a' of the gate-shaped frame 8 are attached to one end of the rails 2a, 2b.

14b and 14b' are placed and positioned, and the stand and gate frame are assembled. Next, the support roll 4 of this frame 1
Preparation for cleaning is completed by placing the bottom of the tube assembly thrown out from the heat exchanger onto a and 4b using a crane.

When placing the gate-shaped frame 8 on the pedestal 1, an auxiliary rail (not shown) is interposed between the ground G and the pedestal 1, and by rotating the air motor 16, the tire-equipped wheels 13
It can be easily mounted by rotating a', 13b' and wheels 14a, 14b.

Now, when cleaning, after adjusting the height and horizontal position of the nozzle body 17, the nozzles 18 and 18 of the nozzle body 17 are
. . . high-pressure water is injected downward, and the gate-shaped frame 8 is moved on the running rails 2a, 2b (arrow O in FIGS. 1 and 2). This movement is performed by rotating the air motor 16 to rotate the wheels 14a, 14b.

When the gate-shaped frame 8 is located at the other longitudinal end under the tube assembly, the air motors 6a and 6b are driven to rotate the rolls 4a and 4b by a predetermined amount to rotate the tube assembly T by a predetermined amount, and then The gate-shaped frame 8 is moved again in the opposite direction. Repeat this several times to complete cleaning of the tube assembly.

In the above embodiment, both support rolls 4a.

4b is rotated, but only one of them may be provided with a rotation drive means, and the other may be allowed to rotate freely.

According to the above embodiment, since it is constructed from a simple stand and a gate-shaped frame, it can be easily loaded, transported and installed at a cleaning site, so there is no need to permanently install a cleaning device. In addition, since the middle part of the support roll has only a shaft with a diameter smaller than the diameter of the support roll, it is easy to insert a rope when placing or lifting the tube assembly on a pedestal. Since the shield plate is provided with a slope on the side, the sludge separated by washing can be effectively discharged to the side of the frame. Furthermore, since the cleaning water jetting nozzle is always facing downward, there is no risk of spreading the peeled dirt, so it can be used in a narrow space.

Furthermore, since the gate-shaped frame can be moved on the ground by the air motor, it can be mounted on the pedestal with its own blade by using an auxiliary rail to the pedestal 1.

Furthermore, since an air motor is used, there is no risk of electrical leakage even in wet work sites.

According to this embodiment, the diameter is 1500mm and the length is 80QQm.
It took only 1 hour to clean a tube assembly of 50 m, which used to take 4 hours using conventional manual methods.

(Effects) According to the present invention, the cleaning device has a gate-shaped frame equipped with a pedestal equipped with a rotationally driven support roll and a nozzle body that is movable on the pedestal, so the structure is extremely simple. It can be manufactured at low cost, and the pedestal and portal frame can be disassembled and easily transported to the cleaning site, so there is no need to permanently install a cleaning device. Further, since the cleaning water can always be jetted downward without the operator having to hold the high-pressure cleaning water spouting nozzle, there is an effect that the cleaning work can be carried out safely and completely.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a right side view of FIG. 1. 1... Frame 2a, 2b... Traveling rail 4a, 4b... Support roll 8... Gate-shaped frame 9a, 9b... Base 10a, 10a', 10b, 10b' -... Vertical member 11... Crosspiece members 14a, 14a', 14b, 14b' -... Wheel 17... Nozzle body 20... Nozzle support

Claims (2)

[Claims] (1) A frame having a pair of running rails and support rolls for rotatably placing a pair of objects to be cleaned parallel to the running rails between the running rails, and wheels running on the running rails. a gate-shaped frame configured by installing a vertical member with a cross member connected to the upper end on a pair of bases having a vertical member; a nozzle support provided vertically movably between the vertical members; and a nozzle support provided on the nozzle support The present invention is characterized by comprising: a nozzle body for injecting high-pressure water that is suspended so as to be movable from side to side; a rotational drive means for rotationally driving the support roll; and a movement means for driving the gate-shaped frame. cleaning equipment. (2) The cleaning device according to claim 1, wherein a longitudinally intermediate portion of the support roll has a diameter smaller than the diameter of the support roll.