JPS61164987A - Liner support structure - 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 Field of the Invention The present invention relates to liner support structures, and more particularly to liner support structures, such as lining equipment for fast breeder reactors.

In the event that high-temperature sodium leaks into a chamber in which sodium equipment is installed, lining equipment is used to prevent the reaction between this high-temperature sodium and building concrete. The present invention relates to a support structure for supporting equipment.

[Background of the invention]

JP-A-59-10893 can be cited as prior art related to lining equipment for fast breeder reactors.

Before explaining the present invention, the configuration of a conventional liner support structure will be explained based on FIGS. 5 and 6, taking as an example a chamber for installing sodium equipment in a fast breeder reactor. The figure is an explanatory diagram of the construction structure of a lining facility constructed using a conventional liner support structure, and FIG. 6 is a perspective view showing the state of engagement between the conventional liner support structure and the liner plate. Supporting liner support bracket X
includes a liner plate support member 2 formed of T-shaped steel;
The liner support fitting X, which is composed of a bearing plate 3 welded to the support member 2 and bolts 4 stud-welded to the bearing plate 3, is constructed by the liner plate support member 2 or the stud bolt 4, and is a lining equipment. A liner plate 1 constituting the floor, walls, and ceiling of the chamber is supported by the chamber coat. In Figure 15, 5 is building concrete, 6 is liner plate 1 and building concrete 5
Thickness of approximately 100 to 1 for the purpose of thermal shielding between
In the slab-shaped insulating concrete of No. 50■, the insulating concrete 6 has been subjected to thermal treatment to remove crystallized water and other moisture contained in the concrete 6 in order to enhance its insulating effect. . 7 shows reinforcing bars arranged vertically and horizontally within the building concrete 5.

In the above configuration, the stud bolt 4 is 30 mm in actual size.
It has a length of 0- or more (usually around 400 m), and is reinforced with reinforcing bars 7,
They are arranged at a fixed pitch between 7 spaces. Therefore, the pitch of the stud bolts 4 is determined by the pitch of the reinforcing bars 7°7, and since the reinforcing pitch in the concrete of a building is generally about 200 to 250, the pitch is determined by the pitch of the reinforcing bars. In total, the spacing is set at 200 to 250 m, but the covering depth of the building concrete 5 is 111 I from the back of the cross-sectional concrete 6 to the reinforcing bar 7 placed closest to the insulating concrete 6.
iM: ・l in Figure 5? I! , lQ) is about IC) to 150■, so it is very difficult to connect the stud bolts 4 and the reinforcing bars 7, which are made up of many pieces, without interfering with each other.

The method for arranging the stud bolts 4 and reinforcing bars 7 includes:
There are cases where the reinforcing bars 7 are placed before the stud bolts 4, and contrary to the above, there are cases where the stud bolts 4 are placed before the reinforcing bars 7. As mentioned above, in the on-site construction of lining equipment, it is extremely difficult to avoid interference between the stud bolts 4, which consist of many studs, and the reinforcing bars 7.
For example, the diameter of reinforcing bar 7 is 38mm, the pitch between reinforcing bars 7 and 7 is 200m, and the detailed diameter of stud bolt 4 is 19mm.
If the head diameter of the stud bolt 4 is 30 mm, the dimension between the reinforcing bars 7 is 162 mm, and if the hem tolerance of the reinforcement is 30 to 40 mm, the stud bolt 4 consisting of multiple pieces It is easy to imagine how difficult it is to arrange all connections with the reinforcing bars 7 without interfering with each other.

Here, we will examine the thermal effects if a problem occurs in the sodium equipment installed in the lining equipment and high-temperature sodium leaks into the chamber.

When high-temperature sodium leaks into the lining equipment, the surface temperatures of the liner plate 1 and the liner plate support member 2 are heated to a temperature close to that of high-temperature sodium (approximately 400 to 500°C), and the liner plate support member 2 and the bearing plate 3, and when the surface temperature of the liner plate support member 2 increases, the support member 2 undergoes large thermal expansion, causing thermal deformation of the liner support fitting X in the axial direction. is possible. The stud bolts 4 stud-welded to the bearing plate 3 are provided to prevent the liner support fitting X from being deformed in the axial direction, and the width of the liner plate support member 2 is 150 mm. For an elastic beam model with a plate thickness of 12 mm, a bearing plate 3 width of 1501 mm, and a plate thickness of 19 mm, liner plate support member 2 (represented by mark RA1).
When calculating the stress (σ) and axial displacement (δQ) when a temperature gradient ΔT (=400°C) is generated between the bearing plate 3 and the bearing plate 3 (represented by sign 2), the following relational expression is obtained. To establish. However, in the formula, A represents the cross-sectional area of the liner plate support member 2 and the bearing plate 3, α represents the coefficient of linear expansion, and E represents the Young's modulus, based on the force balance between the liner plate support member 2 and the bearing plate 3.

A1σ, = Ariσ3 °−(1)
From equations (2) and (3).

E x E * j! 111! ;.

(1) 2 and (4) are simultaneously used to find σ, α
AT E, E, A.

13.7610-'

Next, consider the axial displacement of the bearing plate 3.

Calculating the pitch of the stud bolt 4 by two pitches (500 mm) gives = 0.6 m, and the load (W) applied to the stud bolt 4 in order to suppress the displacement of the bearing plate 3 described above is applied to the beam fixed at both ends. From the model, the following can be obtained.

92EI Q" 192 X 1.96 X 10' X 1.69 X
10" In order to maintain the soundness of the lining equipment during this period, it is necessary to increase the number of stud bolts 4 welded to the bearing plate 3 and to increase the diameter of each stud bolt 4. As described above, it is a difficult task to arrange the stud bolts 4 and the reinforcing bars 7 without any interference.

[Purpose of the invention]

The present invention was made as a result of various studies in order to solve the above-mentioned problems of the prior art, and its purpose is to improve workability when constructing lining equipment on-site. In addition to saving materials, even if a fluid such as high-temperature sodium leaks into the lining equipment, the integrity of the lining equipment is maintained by blocking the thermal influence of the high-temperature fluid and the building concrete. The purpose of the present invention is to provide an improved liner support structure that is superior in terms of construction workability, economy, and safety.

[Summary of the invention]

In order to achieve the above object, the present invention provides a lining equipment that supports a liner plate via a liner support fitting, in which a liner plate support member constituting the liner support fitting and a bearing plate connected to the support member are connected to each other. Both sides are provided with slits to prevent the liner support fitting from being deformed in the axial direction due to a temperature gradient between the liner plate support member and the bearing plate. be.

[Embodiments of the invention]

Hereinafter, the present invention will be explained based on an embodiment shown in FIGS. 1 to 3, taking as an example a case where the present invention is adopted in a chamber for installing sodium equipment in a fast breeder reactor. I is an explanatory diagram of the construction structure of a lining facility constructed using the structure of the present invention, Figure 2 is a view taken in the direction of arrow A in Figure 1, and Figure 3 is a liner plate support that constitutes a part of the structure of the present invention. This is a perspective view of the member viewed from below, showing a liner support fitting that supports the liner plate 1 or a liner plate support member 2 formed of T-shaped steel.
and a bearing plate 3 welded to the support member 2.
11 The present invention provides that both the liner plate support member 2 and the bearing plate 3 constituting the liner support fitting X have a temperature gradient between them. The gist is that a slit 8 is provided to prevent the liner support fitting X from being deformed in the axial direction, and the liner support fitting X is configured by the liner plate support member 2 and the bearing plate 3. Liner plates 1 constituting the floor, walls, and ceiling of lining equipment are supported at chamber corners. In Figure 1,
Reference numeral 5 indicates building concrete, and reference numeral 6 indicates a slab-shaped heat insulating concrete for the purpose of thermal shielding between the liner plate 1 and the building concrete 5.

In the above configuration, we will examine the thermal effects when trouble occurs in the sodium equipment installed in the lining equipment and high-temperature sodium leaks into the chamber.

When high-temperature sodium leaches into the lining equipment, the surface temperature of the liner plate 1 and the liner plate support member 2 will be close to the high-temperature sodium temperature (approximately 400 to 500℃), as in the past.
℃), creating a large temperature gradient between the liner plate support member 2 and the bearing plate 3, and when the surface temperature of the liner plate support member 2 increases, the support member 2 undergoes large thermal expansion. In the invention, as already stated.

Since slits 8 as shown in FIGS. 2 and 3 are provided on both the liner plate support member 2 and the bearing plate 3 that constitute the liner support fitting X, the liner plate support member 2 described above is provided with slits 8 as shown in FIGS. If heat is applied to and bearing plate 3.

The width of the slit 8 increases by the amount of thermal expansion, and the liner support fitting X is not thermally deformed in the axial direction, and the integrity of the lining equipment can be maintained sufficiently.

Therefore, according to the present invention having the above configuration.

The use of stud bolts, which were conventionally required for liner support structures, can be omitted, which not only contributes to material savings, but also eliminates interference between stud bolts 4 and reinforcing bars 7, which was previously considered extremely difficult. This problem has been eliminated, and the workability of constructing liner equipment on-site has been greatly improved.According to a trial calculation, the total weight of the liner support fittings X has been reduced by approximately 2.
The number of man-hours required for arranging the reinforcing bars 7 can be reduced by about 30% compared to the conventional method.

In the present invention, the width of the slit 8 formed in both the liner plate support member 2 and the bearing plate 3 and the interval between the slits 8, 8 are determined as appropriate depending on the size of the lining equipment and other external conditions. However, if the width of the slit 8 is 5 m and the distance between the slits 8 is 500 mm, the lining equipment may become warm due to trouble.

Δ[I・α・ΔT=500X13.58X10-'
X400=2.7 m. Therefore, when forming the slits 8 in the liner plate support member 2 and the bearing plate 3 at a pitch of 500, it is sufficient that the width of the slits 8 is about 5 m.

FIG. 4 is an explanatory diagram of a construction structure showing another embodiment of a lining facility constructed using the structure of the present invention.

The first embodiment shown in FIG. 4 shows a case where the structure of the present invention is adopted at an obtuse corner, which is often seen in wall corners of lining equipment, and FIGS. The same reference numerals are the same parts, 7 is the reinforcing bar, and the liner support metal X
The embodiment is exactly the same as the embodiment shown in FIGS. 1 to 3, except that the joining angle of the liner plate 1°1 supported by the liner plate 1°1 is obtuse.

〔Effect of the invention〕

The present invention is as described above, and as is clear from the description of the illustrated embodiments, according to the present invention, it is possible to improve workability and save materials when constructing lining equipment on-site. Even if a fluid such as high-temperature sodium leaks into the lining equipment, the integrity of the lining equipment can be maintained by blocking the thermal influence between the high-temperature fluid and the building concrete. Construction workability.

It is possible to obtain an improved liner support structure that is superior in terms of both economy and safety.

[Brief explanation of the drawing]

1 to 3 show a liner support structure according to the present invention,
Fig. 1 is an explanatory diagram of the construction structure of a lining facility constructed using the structure of the present invention, and Fig.
3 is a perspective view of the liner plate support member that constitutes a part of the structure of the present invention viewed from below;
The figure is an explanatory diagram of the construction structure showing another example of the lining equipment constructed using the structure of the present invention, and Fig. 5 is an explanatory diagram of the construction structure of the lining equipment constructed using the conventional liner support structure. , No. 6 @ is a perspective view showing the state of engagement between the conventional liner support structure and the liner plate. 1...liner plate, X...liner support fitting, 2...
Liner plate support member, 3... Bearing plate, 5.
...Building concrete, 6...slab-shaped insulating concrete, (beam part J Dormitory 10 No. 20 Exposed J Prisoner 41!

Claims (1)

[Claims] 1. In a lining equipment that supports a liner plate via a liner support fitting, both the liner plate support member constituting the liner support fitting and the bearing plate connected to the support member are provided with the liner plate support member and the bearing plate connected to the support member. A liner support structure comprising a slit that prevents the liner support fitting from being deformed in the axial direction due to a temperature gradient between the liner support structure and the bearing plate.