JPH0329786A - Tie-in structure of large-size equipment - Google Patents

Abstract

PURPOSE:To permit an adjusting seat to be attached at the tie-in point of a large-size equipment after installation by a method wherein the adjusting seat of a flat plate with recess part is attached to one support part the inner surface of the recess part is worked to set open spaces at the tie-in points and the outer surface of the recess part is made to move slidably on the other support part. CONSTITUTION:A high temperature container 6 is installed on and fixed to building floor 8 and a earthquake-proof support ring 11 for support structure is installed and fixed through a protective container or a support member 12 from a building 9. The dimensions of the distance between an earthquake-proof lug 10 and the support ring 11 are measured at four places. The inner surface of the recess part of an adjusting seat 1 is worked to secure open spaces at the four places so aa to provide for thermal expansion. The adjusting seat 1 is then fitted into the support ring 11 in a lateral direction and the upper and lower part of the seat are welded. Since the dimensions of the adjusting seat can be adjusted and worked in this way according to the tie-in dimensions of equipment after installation, there is no need to repeat the reinstallations of the equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an assembly structure of an earthquake-resistant support part that absorbs the amount of thermal expansion movement of a high-temperature vessel such as a fast breeder reactor.

[Conventional technology]

The joint structure of the seismic support part that absorbs the amount of thermal expansion and movement of conventional high-temperature containers is shown in Figures 2 and 3. FIG. 2 will be explained.

The high temperature container 6 suspended and supported on the building floor 8 is generally
From an earthquake-resistant perspective, the container is fixed to the building not only by the upper flange 7 but also by the lower support 3 of the container. Since the high-temperature container 6 under normal use expands thermally compared to when installed, the lower support 3 is designed to absorb thermal expansion prior to maintaining the contact state necessary to achieve the original purpose of earthquake resistance. It is necessary to secure the cost at the time of installation. In particular, high-temperature reactors 6 used in fast breeder reactors, etc., are often large and thin-walled, and due to dimensional tolerances during manufacturing and building tolerances during installation, the equipment's thermal expansion absorption allowance has to be taken into account to improve seismic resistance. Maintaining contact requires effort. In FIG. 2, there is a support structure 4 around the lower support 3, between which the adjustment seat 1 is attached to the support structure side with the bolt 5.
It is installed by On the lower support side, a ring 2 is attached and the surface is machined around the entire circumference. Between the adjustment seat 1 and the ring 2, the amount of thermal expansion of the high temperature container 6 is absorbed and a contact state necessary for earthquake resistance is maintained. In order to perform this function, it is necessary to repeat the installation work of the high temperature container 6 several times and adjust the dimensions of the adjustment seat 1 and the ring 2. Since it is a heavy object, the adjustment work is extensive, and
The process required several days.

In FIG. 3, the adjustment seat 1 is attached to the side of the lower support 3, and in this case also, in order to adjust the dimension between the adjustment seat 1 and the support structure 4, the high temperature container 6 is After repeating the installation work several times, adjust the adjustment seat l to obtain the adjusted dimensions.
It was necessary to process the surface.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into consideration on-site installation and adjustment work that requires equipment assembly of high-temperature containers such as those for high-speed multiplication, and requires repeated installation work of large equipment.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connection adjustment structure that allows on-site installation and adjustment work for equipment connection without repeatedly performing installation work of large equipment.

Another object of the present invention is to provide an adjusting member that maintains the integrity of large equipment even in the case of contact and sliding during thermal expansion in a joint structure between large equipment.

[Means to solve the problem]

In order to achieve the above object, the adjustment seat of the equipment attachment part can be attached after the large equipment has been installed without having to repeatedly install the large equipment.

The equipment mounting structure provides space for human access and adjustment after the equipment is installed. Furthermore, the seismic support portion of the device, which is the device connection structure, has a convex shape, and the support structure portion that receives the seismic support portion also has a convex shape.

A concave flat plate adjustment seat was installed between these convex shaped parts, making it possible to adjust the dimensions to achieve the contact condition necessary for earthquake resistance, taking into account the thermal expansion absorption allowance.

The inner surface of this concave flat plate is machined so that clearance can be set during installation, and it is structured to fit into the convex shape of one of the equipment connection structures, and welded to prevent it from coming off. Further, the outer plane of the concave plane faces the convex plane part of the other device connection structure with an allowance for thermal expansion absorption.

This concave flat plate allows adjustment of both the inclination of the seismic support part of the equipment and the inclination of the seismic support part of the support structure that receives it by processing the inner surface of the concave flat plate.

In order to achieve the other objects mentioned above, the outer surface of the adjustment seat of the concave flat plate is subjected to surface hardening treatment. Maintains the integrity of the equipment against surface contact and sliding in some cases during thermal expansion of the equipment.

[Effect]

The equipment adjustment seats between large equipment are subjected to compressive loads during earthquakes and, in some cases, sliding loads from equipment thermal expansion.

The compressive load during an earthquake is a lateral load received from the seismic support part of the equipment as a surface pressure, and the load is transferred to the seismic support part of the support structure. Since the adjustment seat has a larger contact area than the shape of the seismic support part and is a flat plate, there is no problem in load transmission.

When equipment thermally expands, it is subject to sliding loads when it comes into contact and slides. In response to this sliding load, the fitting part due to the concave shape of the adjustment seat receives a shear load and transmits the load. This load transmission allows the structure of the adjustment seat to be made smaller.
The adjustment seat can be installed easily. Furthermore, by surface hardening the outer surface of the concave flat adjustment seat, the coefficient of sliding friction between the contact surfaces is reduced and phenomena such as adhesion of contact materials are prevented.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 4, and 5.

Figure 1 will be explained. The high temperature container 6 is installed and fixed on the building floor 8 by an upper flange portion 7. At the bottom of the high-temperature container, there is a lower body 3 that also serves as a lower support. This lower fuselage 3 has an earthquake-resistant lug 10
are attached at four locations in the circumferential direction. Around this is a support structure seismic support ring 11, which is connected with a support 12 to a protective container or building m9. This earthquake resistant rug 1
0 and the support structure seismic support ring 11, the :8 adjustment seat 1 is a concave flat plate that fits together and is attached to the support structure seismic support ring 11 side by welding.

This installation method is as follows.

The high-temperature container 6 is installed and fixed on the building floor 8, and the support structure seismic support ring 11 is attached to the protective container or the building 9.
It is attached and fixed via the support material 12 from the base. Next, the distance between the earthquake-resistant lug 10 and the support structure earthquake-resistant support ring 11 is measured at each of the four locations. The concave inner surface of the adjustment seat 1 is machined to ensure clearance dimensions at all four locations, taking thermal expansion absorption allowance into consideration. Next, the adjustment seat 1 is laterally fitted into the support structure seismic support ring 11, and the upper and lower parts of the adjustment seat are welded.

FIG. 4 shows an embodiment of the mounting state of this adjustment seat l.

It is attached to the support structure seismic support ring 11 by welding.

In addition, in FIG. 1, the support structure seismic support ring 11
The timing of installation can be before or after the installation of the high temperature container 6, and is determined by the allowance for installation accuracy.

In FIG. 4, the welded portion l3 of the adjustment seat 1 is on the outside of the fitting structure, and the outer surface of the adjustment seat is not deformed or thermally affected by welding.

Further, the outer surface of the adjustment seat 1 is subjected to surface hardening treatment 15 by overlaying with hard material to improve wear resistance.

FIG. 5 will be explained.

The high temperature piping 14 forms a mating structure with the support structure support 16 by means of its seismic lugs 10.

An adjustment seat 1 is located between the seismic lug 10 and the support structure support 16, and is attached to the support structure support 16 side by welding.

This adjustment seat 1 also includes an earthquake-resistant lug 10 and a supporting structure support 1.
6, the inner surface of the concave shape is machined to ensure the gap size considering the thermal expansion absorption allowance, and the parts are fitted and attached by welding.

Furthermore, since the high-temperature piping 14 undergoes a large amount of heat transfer due to thermal expansion, the outer surface of the seismic lug 10 (the side facing the adjustment seat 1) is also surface hardened by overlaying with a hard material. As a result, when the sliding distance during thermal expansion is long, contact sliding between the surface hardened surface and the pusher improves wear resistance and prevents galling and adhesion.

〔Effect of the invention〕

According to the present invention, since it is structured as described above, the following effects are achieved.

Since the dimensions of the adjustment seat can be adjusted by adjusting the dimensions of the equipment after installation, there is no need to repeatedly install the equipment.

Furthermore, since the adjustment seat has a concave shape, it can be attached by welding, eliminating the need for mechanical attachment using bolts or the like.

Furthermore, since the outer surface of the adjustment seat can be hardened with hard material or thermal sprayed, the wear resistance is improved.

Moreover, not only the outer surface of the adjustment seat but also the outer surface of the corresponding equipment can be surface hardened to further improve the abrasion resistance.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the present invention, FIGS. 2 and 3 are side views of a conventional system, and FIG. 4 is a perspective view of the adjustment seat. FIG. 5 shows a side view of an embodiment of the invention in piping. Figure 1 Figure 3 Figure 2 (Figure 6, Figure 4)

Claims (1)

[Claims] 1. In a device support connection structure between large devices, a concave flat plate adjustment seat is attached to one support part, and the clearance of the connection part is set by machining the inner surface of the concave part. A large equipment connection structure that slides with the other support part on the outside surface. 2. The adjusting seat according to claim 1, wherein the outer surface of the concave portion of the adjusting seat is subjected to a surface hardening treatment to improve wear resistance. 3. A joint structure in which the outer surface of the concave portion of the adjustment seat and the outer surface of the supporting portion facing the adjustment seat are subjected to a surface hardening treatment to improve wear resistance.