JPS5817651Y2 - Device to hold the nozzle in place in the pipe - Google Patents

Description

[Detailed description of the invention] The present invention is a device for holding a nozzle inserted into a pipe in a predetermined position, for example, for cleaning the inside of a pipe or a constriction part provided in the pipe for use in a differential pressure flow meter. Regarding.

Because rapid pressure fluctuations occur at the constricted portion of the piping, scale is likely to adhere to the inner surface.

Conventionally, the work of removing this scale required workers to strain their hands, so cleaning was carried out by inserting a high-pressure water hose into the piping from an appropriate location.

However, the mouth of the high-pressure water hose does not stay in a fixed place due to the water pressure, but swings around, making it impossible to uniformly clean the scale and making it impossible to identify the area to be cleaned.

If scale adheres to the inner surface of the restrictor part of piping used in differential pressure flowmeters, errors due to differential pressure will increase, and even if the scale cannot be cleaned uniformly, it will cause errors, so be especially careful of scale. Complete and uniform cleaning is required.

In view of these circumstances, this invention prevents the hose from swinging due to high-pressure water, uniformly cleans the scale of the constriction part of piping, especially the constriction part used in flow meters, and improves the operation of high-pressure water hoses. This was proposed with the aim of making it easier to spray inside a pipe, by sandwiching the target area and creating openings in front and behind it, and inserting a support member equipped with a guide roller into the pipe through each opening. A nozzle connected to a flexible hose is inserted into the tube through one opening, and the other end of the guide wire, whose one end is connected to the nozzle, is led out of the tube through the other opening. , a device for holding a nozzle in a fixed position in a pipe, characterized in that the hose and the guide wire are supported by the guide rollers attached to the respective support members, and the nozzle is placed at a predetermined position in the pipe. provide.

According to the device of the present invention, the flexible hose and the guide wire are supported by the guide roller attached to the support member, and the nozzle is placed at a predetermined position inside the pipe, so that the nozzle is reliably placed at the predetermined position inside the pipe. In addition to being fixed, the nozzle can be easily moved by automatically or manually pulling either the hose or the guide wire, holding the nozzle in place.

Therefore, the position of the nozzle can be known in advance from outside the tube, and by using the guide roller, the hose can be operated more easily than before.

Therefore, for example, when spraying cleaning liquid from a nozzle to clean a constriction part provided in a pipe, by installing the nozzle at a position where the cleaning liquid can be sprayed uniformly onto the cleaning surface, the cleaning surface can be cleaned uniformly. .

Next, one embodiment of the device according to the present invention will be described based on the drawings.

Figures 1 to 3 16 - 1 is the constriction part 2 to be cleaned inside.
3a and 3b are seven run-shaped nozzles that are branched before and after the throttle part 2, and 4a and 4b are nozzles 3a.
and 3b, the support member is comprised of a flange portion 5 and a guide vibro, as shown in FIG. 2, and a guide roller 7 is attached to the tip of the guide vibro.

Reference numeral 8 denotes an automatically rotating cleaning nozzle that spouts high-pressure water, to which a flexible hose 9 for supplying high-pressure water is connected.

A piano wire 10 has one end connected to the nozzle 8, and the other end supported by a guide roller 7b and guided out of the tube.

The hose 9 and the piano wire 10 are movably supported by guide rollers 7a and 7b.

The support members 4a and 4b are connected to the nozzles 3a and 3 at the 7 run section 5.
It is bolted to b.

3, 11 is the shaft pin of guide roller I, 12
is a separate ring.

In such an apparatus, a method of installing the nozzle 8 on the central axis a of the tube 1 in order to uniformly clean the constriction part 2 will be explained.

1. First, insert the support member 4a into which the hose 9 has been inserted into the guide pipe 4a into the nozzle 3a, and connect the 7 run section 5 and the nozzle 3
Bold join a.

Next, push the hose 9 sufficiently into the pipe, and insert the nozzle 8 into the nozzle 3.
b with a suitable jig, connect the piano wire 10 which has been previously inserted into the guide pipe 5 of the support member 4b to the tip of the nozzle 8, and then fix the support member 4b by bolting the nozzle 3bK.

At this time, if the piano wire 10 and the hose 9 are sufficiently stretched, the nozzle 8 can be installed on the central axis a of the pipe 1.

In the conventional cleaning method, high-pressure water was sprayed from a nozzle through a hose inserted into the piping, and the cleaning nozzle was unable to maintain its position due to the reaction force of the high-pressure water, causing it to oscillate in arbitrary directions. However, in the device according to the present invention, the piano wire 10 is connected to the tip of the automatic rotating cleaning nozzle 8, and the piano wire 10 and the flexible hose 9 are guided. By supporting the nozzle 8 on the rollers 7a and 7b, the nozzle 8 can be installed on the central axis a, and the position of the nozzle 8 can be known in advance from outside the tube, so that the cleaning liquid can be uniformly sprayed onto the constriction part 2. This made it possible to uniformly clean the aperture section 2.

Additionally, by installing a guide roller at the tip of the support member, the high-pressure water hose can now be operated more freely than before.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional elevational view showing a nozzle fixing device according to the present invention, FIG. 2a is an elevational view showing partially cut away support members 4a and 4b, and FIG. 2b is a side view of support members 4a and 4b. , FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2. 1... Piping, 2... Throttle part, 3a,
3b...Nozzle stand, 4a, 4b...Support member, 7.7g, 7b...Guide roller, 8.
...Cleaning nozzle, 9...Flexible hose,
10... Piano wire.

Claims (1)

[Scope of utility model registration request] For spraying inside a pipe, open parts are placed in front and behind the target part, and a support member equipped with a guide roller is inserted into the pipe through each opening and is removably fixed to the opening. A nozzle connected to a flexible hose is inserted into the pipe, and the other end of the guide wire, whose one end is connected to the nozzle, is led out of the pipe through the other opening, and the hose and guide wire are attached to their respective support members. 1. A device for holding a nozzle in a fixed position in a pipe, characterized in that the nozzle is supported by the guide roller and placed at a predetermined position in the pipe.