JPH0338720Y2 - - Google Patents

Description

[Detailed description of the invention] [Detailed description of the invention] When configuring the internal structure and anchoring part of equipment in a conventional prestressed concrete reactor containment vessel, as shown in Figures 1 and 2, The liner plate a in the same area is notched, a thick plate b is fitted and welded, and a bearing plate d and a stud e are separately welded to the concrete frame c side of the same thick plate b, and the inside of the containment vessel of the thick plate (b) is welded. An intermediate pad f was welded to.

In the conventional structure, the liner plate a is notched and the thick plate b is fitted and welded, which requires a large amount of welding and deformation of the liner plate a.Also, the bearing plate and studs are close to each other, making it difficult to manufacture. In addition, it takes a long time to conduct inspections using penetrant testing methods and magnetic particle testing methods after welding.

The present invention was proposed to solve these problems.In a concrete reactor containment vessel whose inner surface is covered with an airtight liner plate, the liner plate is clamped between a studded bearing plate and an intermediate pad. The present invention relates to a load supporting structure in a concrete reactor vessel characterized by comprising:

In the present invention, as described above, the studded bearing plate and the intermediate pad are clamped from both sides of the liner plate without cutting it, so the airtightness of the concrete containment vessel due to the liner plate is not reduced. This prevents welding deformation of the liner plate due to welding between the liner plate and the thick plate fitted into the notch as in the conventional structure.

Furthermore, as mentioned above, since the liner plate is held in place by the bearing plate with studs and the intermediate pad from both the concrete frame side and the inside of the reactor containment vessel, the structure inside the reactor containment vessel is Loads from equipment, piping, etc. can be efficiently transmitted from the intermediate pad to the bearing plate and studs without causing large stress on the liner plate, which is responsible for maintaining airtightness.Furthermore, since the studs are attached to the bearing plate, manufacturing is easier. The present invention has many advantages, such as ease of inspection.

The present invention will be described below with reference to the illustrated embodiments.

1 is a liner plate that covers the concrete frame 2 of the reactor containment vessel, a bearing plate 3 is welded to the concrete frame side of the liner plate 2, a stud 4 is welded thereon, and the atoms of the liner plate 2 are welded to each other. An intermediate pad 5 is welded to the inside of the reactor containment vessel, and the liner plate 1 is clamped between the intermediate pad 5 and the bearing plate 3 to form a load support section.

Note that the bearing plate 3 is an intermediate pad 5.
The structure is made to match the shape of the outer peripheral edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumferential edge of the outer circumference of the outer circumference of the first and second parts of the first and second embodiments of the present invention.

As a result, tensile force V, shear force S,
A reaction force of bending moment M occurs, but shear force S
The bearing plate 3 supports the bearing plate 3, and the stud 4 supports the tensile force V and the bending moment M, so the reaction forces S, V, and M are transmitted from the intermediate pad 5 to the bearing plate 3 and the stud 4. Must. According to the illustrated embodiment, since the liner plate 1 is clamped by the bearing plate 3 with the studs 4 and the intermediate pad 5, a large stress is generated on the liner plate 1 which has the function of maintaining airtightness. The reaction forces S, V, and M are efficiently transmitted in this order from the intermediate pad 4 to the bearing plate 3 to the stud 4 without causing any interference.

In addition, according to the illustrated embodiment, there is no cutout in the liner plate 1 as in the conventional case, so the airtightness of the liner plate 1 is not reduced, and the studs 4 can be attached to the bearing plate 3, making it easy to manufacture. , inspection becomes easier.

[Brief explanation of the drawing]

Figure 1 is a front view of the load support structure of a conventional reactor containment vessel, Figure 2 is a view taken from the arrow in Figure 1, and Figure 3 is
The figure is a rear view showing one embodiment of the load support structure in the concrete reactor containment vessel according to the present invention, and FIG. 4 is a view taken along the arrow in FIG. 3. 1...liner plate, 2...concrete frame,
3...Bearing plate, 4...Stud, 5...Intermediate pad.

Claims (1)

[Scope of utility model registration request] A load support structure for a concrete reactor containment vessel, the inner surface of which is covered with an airtight liner plate, the liner plate being clamped between a studded bearing plate and an intermediate pad.