JPS6224001Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a nozzle holding fitting for a high-pressure water injection device, and particularly to a nozzle holding fitting that is effective for a top pressure recovery turbine (hereinafter referred to as TRT).

Conventionally, high pressure water injection equipment in TRT etc.
It is used to clean dust adhering to the blades, but since it faces the gas passage, there is a risk of a major accident if it falls off due to the high load of high-pressure water or the vibration of the equipment. Also, because it faces the gas passage, daily maintenance and inspection of the equipment was not possible. On the other hand, due to the environment containing a lot of dust, easy installation and removal are required when necessary for cleaning the nozzle injection port, etc., but as mentioned above, it is possible to reliably prevent the inside of the device from falling due to high-pressure water. It was difficult to satisfy mutually contradictory demands.

The purpose of this invention is to solve the problems of conventional high-pressure water injection devices as mentioned above, and to create a high-pressure water injection system that can be reliably prevented from coming off, can withstand high loads, and can be easily installed and removed. The object of the present invention is to provide a nozzle holding fitting for the device.

The nozzle holding fitting for high-pressure water injection equipment such as TRT of this invention which achieves the above purpose has a stop plate fixed on the outer periphery of the high-pressure water pipe where the nozzle is attached to the high-pressure water pipe, and An O-ring is attached to the part facing the stop plate, and a holding metal fitting formed by integrally joining the vertically divided unit with a horizontal split surface bolt is inserted from the outer periphery of the joint between the stop plate and the nozzle. In addition to arranging it so as to surround it,
The holding fitting is characterized in that it is provided with a hook portion that engages with a flange formed at the end of the nozzle connected to the stop plate, and a push bolt disposed at a position opposite to the hook portion.

The present invention will be explained below with reference to embodiments shown in the drawings.

Fig. 1 is a side view of the high-pressure water injection device, Fig. 2 is a side sectional view showing the nozzle holding fitting of the high-pressure water injection device of this invention, and Fig. 3 is a vertical cross-section taken along line A-A in Fig. 1. It is a diagram.

A high-pressure water pipe 2 is installed in a guide cylinder 1 provided in a gas passage 10, and a nozzle 3 is attached to the tip of the high-pressure water pipe 2 with a screw or the like so that high-pressure water is spouted from an injection port 31 at the tip. It is composed of In addition, a stop plate 4 is tightly installed at the rear of the nozzle 3, which is the attachment part between the nozzle 3 and the high-pressure water pipe 2, via an "O" ring 5 to prevent leakage of high-pressure water. A holding fitting 6 is provided so as to surround the connecting portion of the stop plate 4 and the stop plate 4, and the holding fitting 6 is configured to firmly press the stop plate 4 and the nozzle 3 together with a push bolt 7 to prevent loosening. . Furthermore, as shown in FIG. 3, the holding fitting 6 is divided into upper and lower parts, but the upper and lower parts are integrally connected by horizontally divided plane bolts 8.

As mentioned above, the nozzle holding fitting of the high pressure water injection device such as TRT of this invention has a nozzle attached to the tip of the high pressure water pipe passing inside the guide cylinder,
It surrounds both the connecting stopper plate through an "O" ring and presses the two together with a push bolt to prevent loosening, and is divided into two parts, upper and lower, and is integrally joined by bolts at the horizontal dividing surface. Therefore, it is possible to configure the nozzle 3 so that it does not loosen or fall off due to vibrations, etc., and to withstand the load of high-pressure water. It is constructed so that it can be easily installed and removed, and even if the horizontal split plane bolt breaks, the guide cylinder acts as a stopper and is designed to completely prevent the device from flying into the gas passage. This has been achieved and has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a side view of the high-pressure water injection device, Fig. 2 is a side sectional view showing the nozzle holding device of the high-pressure water injection device of this invention, and Fig. 3 is a longitudinal sectional view taken along line A-A in Fig. 2. be. 1... Guide tube, 2... High pressure water piping, 3... Nozzle, 4... Stop plate, 5... "O" ring, 6...
...Holding metal fitting, 7...Push bolt, 8...Horizontal split surface bolt.

Claims (1)

[Scope of utility model registration request] A nozzle holding fitting that is attached with a screw or the like to the outer periphery of the tip of a high-pressure water pipe 2 placed in a guide tube 1 whose tip opens into a gas passage, and that spouts high-pressure water from an injection port 31 bored at the tip. A stop plate 4 is fixedly installed on the outer periphery of the high-pressure water pipe where the nozzle 3 is attached to the high-pressure water pipe 2, and an O-ring is attached to the rear part of the nozzle facing the stop plate 4.
A holding fitting 6, which is formed by integrally joining a vertically divided unit with horizontal split plane bolts 8, is arranged so as to surround the joint between the stop plate 4 and the nozzle 3 from the outer periphery. The holding fitting has a flange 3 formed at the joint end of the nozzle 3 with the stop plate 4.
A nozzle holding fitting for a high-pressure water injection device such as a furnace top pressure recovery turbine, which is provided with a hook portion 6a that engages with the hook portion 6a, and a push bolt 7 disposed at a position opposite to the hook portion 6a.