JPH059441Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a container for recovering high-temperature water drain in thermal/nuclear power plants and other heat supply plants.

[Conventional technology]

FIG. 8 is a partially cutaway perspective view showing a conventional example. Body shell 1 of a container for collecting high temperature or low temperature fluid
On the inner surface, in order to protect the main body shell 1 from material deterioration, corrosion, etc. caused by the collision of fluid introduced from the inlet pipe 3, a protection plate 2 is fixed around the periphery with welded metal W as shown in FIG. It had been installed.

[Problem that the invention attempts to solve]

However, the conventional protection plate 2 described above has the following problems.

That is, when high-temperature fluid is introduced into the main body shell 1, the temperature of the protection plate 2 that comes into direct contact with the fluid rises earlier than that of the main body shell 1, and the temperature between the main body shell 1 and the protection plate 2 increases. When a temperature difference occurs, the thermal expansion of the protection plate 2 is restrained by the main body shell 1, and excessive stress is generated in the fixed parts around the protection plate 2, causing the fixed parts of the protection plate 2 to break in a short period of time. I had something to do. At the same time, thermal stress was also generated in the main body shell 1 and the protection plate 2.

Further, when a fluid whose temperature is lower than room temperature is introduced into the main body shell 1, the contraction of the protection plate 2 is restrained by the main body shell 1, and excessive stress is generated in the fixed part of the protection plate 1. Something happened.

[Means for solving problems and their effects]

Therefore, in the present invention, in a drain collection container that collects high-temperature water drain in thermal/nuclear power plants and other heat supply plants, a divided protection plate is attached to the inner circumferential wall of the collection container in the axial direction via hook-shaped fittings. and installed with a gap in the thickness direction,
There is a gap between the protective plate and the adjacent protective plate, and an overlapping plate is attached to the inner peripheral wall at one end of the peripheral end of the protective plate so as to overlap with the adjacent protective plate. By providing a drain collection container that allows for free thermal expansion and contraction of the protective plate, even if a temperature difference occurs between the main body of the container and the protective plate, the main body and the protective plate will not be overheated. This makes it possible to avoid the occurrence of severe thermal stress.

That is, when a hot fluid is introduced into the container,
The temperature of the protective plate inside the main body, which is in direct contact with the fluid, rises earlier than the main body, and the protective plate tries to expand to the surroundings, but the protective plate is fixed at the periphery by the main body, and the temperature rises earlier than the main body. Since the protective plate is attached to the main body, the thermal expansion of the protective plate is restricted, and excessive stress is generated at the peripheral fixing part of the protective plate. It is now possible to expand freely around the surrounding area, avoiding the generation of excessive stress.

〔Example〕

1 to 4 are diagrams showing a first embodiment of the present invention. As shown in the figure, the protection plate 2 is attached to the main body body 1 by being placed on a hook-shaped attachment part 5. The divided protection plate 2 is shown in Figures 2 and 4.
The overlapped plates 6 shown in the figure can protect the inner surface of the main body shell 1 over its entire circumference. of course,
It is not necessary to provide the protective plate 2 all around the circumference.
It may be provided only at the position where the inflowing fluid collides with the inner wall of the main body shell 1.

Note that numerals 3 and 4 in the figure indicate an inlet pipe and an outlet pipe, respectively, and numeral 9 indicates a gap.

5 and 6 are diagrams showing a second embodiment of the present invention. In this embodiment, a fixing attachment part 15 is provided at the center of the protection plate 2, and the protection plate 2 can freely expand and contract around the circumference. In this case, in order to more securely attach the protection plate 2 to the main body shell 1, the hook-shaped attachment parts 5 shown in FIG. 2 may be used at the same time, as in the third embodiment shown in FIG. The shape, combination, mounting position, etc. are not limited in any way.

Note that the reference numeral 7 in FIG. 6 indicates a slide pin.

[Effect of idea]

In this invention, in thermal power plants, nuclear power plants, and other heat supply plants, a protection plate that is attached to the inner peripheral wall of a blowing container that collects high-temperature water drain water is telescopically attached to the main body body via a hook-shaped attachment part. Even if a temperature difference occurs between the protective plate and the main body, stress can be avoided at the attachment point between the protective plate and the main body, making the protective plate more reliable than conventional types. It greatly contributes to the development of industry, such as by being able to provide the following.

[Brief explanation of drawings]

1 to 4 are diagrams showing a first embodiment of the present invention, FIG. 1 is a partially cutaway overall perspective view showing how the protection plate is attached, and FIG. , a developed view showing the details of the hook-shaped attachment parts by unfolding the protection plate, FIG. 3 is a cross-sectional view taken in the direction of the - arrow in FIG. 2, and FIG. FIG. 3 is a cross-sectional view showing how the overlapping plates 6 are attached. 5 to 6 are diagrams showing a second embodiment of the present invention, in which FIG. 5 is a developed view of the protection plate 2, and FIG. 6 is a sectional view in the thickness direction of FIG. 5. FIG. 7 is a diagram showing a third embodiment of the present invention, and FIG. 7 is a diagram showing the protection plate developed. FIG. 8 is a partially cutaway overall perspective view showing a conventional example of a protective plate mounting situation, and FIG. 9 is a sectional view of the conventional example showing a protective plate mounting method. 1...Main body trunk, 2...Protective plate, 3...Inlet pipe,
4...Outlet pipe, 5, 15...Mounting parts, 6...Overlapping plate, 7...Slide pin, 9...Gap.

Claims (1)

[Scope of utility model registration request] In a drain collection container that collects high-temperature water drain in thermal/nuclear power plants and other heat supply plants, a divided protection plate is attached to the inner circumferential wall of the collection container in the axial and thickness directions via hook-shaped fittings. The protective plate is attached with a gap, and there is a gap between the protective plate and the adjacent protective plate, and an overlapping plate is installed on the inner peripheral wall at one end of the peripheral end of the protective plate so as to overlap with the adjacent protective plate. A drain collection container characterized by being attached with.