JPH0231651Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a mounting structure for heating coils used in tankers, etc., and is designed to prevent stress such as deformation from being concentrated in extremely localized areas, and to improve durability. It is characterized by improved performance and can be easily installed even on ships already in service.

[Conventional technology]

Conventionally, heating inside a tank of a tanker or the like has been carried out by disposing a heating coil inside the tank and supplying steam or the like to the heating coil.

Conventionally, heating coils have been attached simply by using Ω-shaped clips that have a holding effect (Japanese Patent Laid-Open No. 77689/1989).

In other words, the clip simply presses the heating coil against the main body of the tank or the like, and may or may not stop the heating coil from moving in the longitudinal direction due to thermal expansion, for example.

[Problem that the invention attempts to solve]

The conventional method of attaching the heating coil using clips cannot prevent the heating coil from being deformed locally due to thermal expansion, its own weight, etc., and as a result, it has the disadvantage that the deformation is accelerated from the concentrated area. .

In other words, the longitudinal movement of the heating coil due to thermal expansion, etc. may be stopped by the holding conditions of multiple clips, or may move without being stopped, resulting in uneven movement, resulting in local deformation, etc. There is a disadvantage that excessive force is concentrated and damage occurs, and in the case of the vertical mounting part of the heating coil, a phenomenon occurs where it falls down due to engine vibrations and the heating coil's own weight, and strain such as deformation is concentrated in a very localized area. It had some drawbacks such as damage.

[Means for solving problems]

In order to eliminate the above-mentioned drawbacks, the present invention includes an expansion loop in the heating coil, a large diameter portion at approximately the same distance in the direction of both ends, and the large diameter portion is connected to the main body side of the tank, etc. The heating coil is attached to a fixed bracket with a U-bolt so as not to move in the longitudinal direction of the heating coil.

In the present invention, a large diameter portion is formed at a predetermined position of the heating coil. The large diameter portion may be constructed by separately fitting and welding a sleeve, but it is preferable to use a coil joint. Unlike the case in which the longitudinal movement of heating coils having the same diameter is stopped, the configuration of the large diameter portion described above can very easily stop the longitudinal movement of the heating coil.

In the following description, the large diameter portion fixed to the fixing bracket on the main body side of the tank or the like will be simply referred to as an anchor point.

[Effect]

In the present invention, an expansion loop 2 is formed in the heating coil 1, and a large diameter portion 6 formed at approximately the same distance in the direction of both ends is attached to a fixing bracket 8 on the main body side of the tank or the like, along the longitudinal direction of the heating coil 1. The anchor point 3 is configured by being attached with a U bolt 11 so as not to move in the direction. Therefore, thermal expansion between the anchor points 3 is absorbed by the expansion loop 2 and does not affect other parts.

Furthermore, the heating coil 1 undergoes only a predetermined thermal expansion in a relatively short section separated by the anchor points 3, and there is no uneven movement, etc., as in the conventional case, and there is no unreasonable deformation in extremely localized areas. is not concentrated, and durability is improved.

The above-mentioned effect is the same for the vertical mounting portion 1a of the heating coil 1, and according to the present invention, phenomena such as slipping down due to its own weight can be eliminated.

Furthermore, it can be easily attached to a tank or the like of a ship already in service by using the fixing bracket 8 on the main body side.

〔Example〕

In FIG. 1, 1 is a heating coil provided in a tank T, and has a vertical mounting portion 1a and a bottom mounting portion 1b.

In the figure, 2 indicates an expansion loop, and 3 indicates a mounting structure of the present invention, that is, an anchor point section.

Although not shown in the drawings, conventional clips or the like may be provided at appropriate positions other than the anchor points as required.

In the figure, 4 is the upper deck and 5 is the tank bottom.

In the present invention, a large diameter portion 6 is formed by a coil joint or the like at approximately the same distance in the direction of both ends of the expansion loop 2.

Referring to FIG. 2, the large diameter portion 6 is constructed using a coil joint, and the heating coil 1 is fitted from both ends of the coil joint and welded to the heating coil 1. . However, the large diameter portion 6 may be constructed by separately welding a sleeve.

The present invention has an engaging portion 7 of the large diameter portion 6,
A base plate 9 is attached to a fixed bracket 8 provided in advance on the main body side of a tank or the like so as not to move in the longitudinal direction of the heating coil 1.
is prepared.

In the case of the embodiment shown in FIG. 2, the engaging portion 7 of the base plate 9 receives the large diameter portion 6, and the heating coil 1
It is composed of upstanding pieces 10 at both ends that prevent movement in the longitudinal direction. Further, engagement portions 12 for U-bolts 11 are formed on both sides of the base plate 9.

In the figure, 13 is a nut.

The U-bolt 11 is attached to the existing fixing bracket 8 using the attachment hole 14 that is previously provided for attaching a conventional clip.

In the above configuration, the large diameter portion 6 is engaged with the engaging portion 7 of the base plate 9, and the U bolt 11 is engaged with the engaging portion 12 of the base plate 9 and inserted into the mounting hole 14 of the fixed bracket 8. By screwing and tightening the nut 13 on the opposite side, the large diameter portion 6 is attached to the fixed bracket 8 integrally with the base plate 9, and the longitudinal movement of the heating coil 1 is completely prevented, forming the anchor point 3. It is something that will be done.

In FIG. 3, the engaging portion 7 of the large diameter portion 6 provided on the base plate 9 is constructed with a punched hole 15 for receiving the large diameter portion 6.

In this case as well, the large diameter portion 6 is attached to the fixed bracket 8 integrally with the base plate 9 with U bolts 11, so that movement of the heating coil 1 in the longitudinal direction is completely prevented.

In FIG. 4, the engaging portion 7 of the base plate 9 is composed of upright pieces 10 at both ends, almost the same as in the embodiment in FIG. In this example, the convex portion 16 provided on the bottom surface of the base plate 9 and the hole 17 provided in the fixing bracket 8 are engaged by pressing the U bolt 11 instead of using the U bolt 11.

According to the present invention having the above structure, the expansion loop formed in the heating coil can be easily attached to the fixing bracket on the main body side at appropriate positions in the direction of both ends, without moving in the longitudinal direction of the heating coil, and the anchor The points can be easily configured.

[Effect of idea]

According to the present invention, the heating coil can be mounted at an appropriate position on the fixed bracket on the main body side of the tank etc. without moving in the longitudinal direction of the heating coil. An advantage is obtained that it is easy to form so-called anchor points at appropriate positions. Therefore, it is possible to avoid stress such as deformation concentrating on local parts of the heating coil, and furthermore, it is possible to prevent the vertical mounting part from slipping off, etc., and the durability can be improved. be.

Furthermore, the base plate can be used to attach the conventional fixing bracket without any particular modifications.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a diagram showing how the heating coil is installed in a tank of a tanker; Fig. 2 is an exploded perspective view showing the heating coil mounting structure of the invention; and Fig. 3 is an exploded perspective view showing the heating coil mounting structure of the invention. 4 is an exploded perspective view showing another embodiment, and FIG. 4 is an exploded perspective view showing still another embodiment. 1... Heating coil, 2... Expansion loop, 3... Anchor point, 6...
Large diameter part, 7... Engagement part (of the large diameter part), 8... Fixed bracket, 9... Base plate.

Claims (1)

[Scope of utility model registration request] It has a large-diameter part configured at approximately the same distance in the direction of both ends of the expansion loop configured in the heating coil, and an engagement part of the large-diameter part, and is integrally fixed to the main body side of a tank, etc. A heating coil mounting structure comprising a base plate attached to a bracket with U bolts so as not to move in the longitudinal direction of the heating coil.