JPH0435727Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a fixing device for heat exchanger tubes, and particularly to a fixing device for heat exchanger tubes wound in parallel on the surface of a tank.

[Background of the idea]

In recent years, in order to keep the temperature of the liquid in the tank constant, a method has been developed in which heat transfer tubes are wrapped around the tank surface in parallel, and the liquid in the tank is cooled or heated from the tank surface using the heat transfer tubes.

However, there was no simple device for fixing the heat exchanger tubes to the tank. For example, a method of fixing the heat exchanger tubes to the tank surface by welding may be considered, but in this case, the adhesion between the heat exchanger tubes and the tank is good and it is preferable in terms of heat conduction, but the construction is complicated and the heat exchanger tubes are The problem is that it cannot be easily replaced.

Furthermore, when a heat medium is passed through the heat exchanger tube, there is a drawback that the welded portion separates due to the difference in thermal expansion between the heat exchanger tube and the tank.

[Purpose of the case]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat exchanger tube fixing device that can easily and tightly fix the heat exchanger tubes to a tank.

[Summary of the idea]

In order to achieve the above object, the present invention provides a fixing device for heat exchanger tubes wrapped around the tank surface.
a bar for pressing the heat exchanger tube against the tank; a fixing plate projecting around the tank and supporting one side of the heat exchanger tube; a locking means for locking one end of the bar; The present invention is characterized by comprising a tightening means disposed in the tank on the other end side of the heat exchanger tube and tightening the other end of the bar.

[Example of idea]

Preferred embodiments of the heat exchanger tube fixing device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a state in which a heat exchanger tube 12 wound around a rigid tank 10 is fixed by a heat exchanger tube fixing device according to the present invention. Incidentally, the lower part of this rigid tank 10 is shaped like an inverted dome. As shown in the figure, this device includes a fixing plate 14 and screws 16.
and a bar 18.

Next, each of the above-mentioned constituent elements will be explained with reference to a sectional view taken along the line AA in FIG. 1 shown in FIG.

The fixing plate 14 supports the heat exchanger tube 12 tightly wrapped around the tank 10.
It is placed around 0 and protrudes like a cantilever from the tank surface.

On the other hand, the screw 16 is provided with a male screw (bolt) 16 at a position facing the fixing plate 14 with the heat exchanger tube 12 in between.
a is arranged. Note that the fixing plate 14 and bolts 16a are attached to the tank 10 by attaching the heat exchanger tubes 12
This is done before wrapping around the tank 10.

Now, the method of attaching the heat exchanger tube 12 to the tank 10 is to first attach the heat exchanger tube 12 to the fixing plate 14 and the bolts 16.
Wrap tightly between a. Subsequently, as shown in FIG. 4, the convex portion 18a at the lower end of the bar 18 is
4, and using this as a fulcrum for the bar 18, tilt the bar 18 toward the tank 10, and pass the upper end of the bar 18 through the bolt 16a. Finally, attach the female screw (nut) 16b to the bolt 16.
a and tighten the bar 18.

Note that a spacer 20 is attached to the bolt 16a. In addition, if pressing pressure is required against a wide surface of the heat exchanger tube 12, as shown in FIG.
What is necessary is to insert a backing plate 22 having a curvature equivalent to that between the heat exchanger tube 12 and the bar 18. However, in this case, the bolt 16a and the fixing plate 14 are connected to the abutting plate 22.
It is necessary to make it longer by the thickness of the board.

Furthermore, in addition to the case in which the fixing plate 14 is attached continuously in the form of a flange around the tank as shown in FIG. In this case, the fixing plate 24 may also be attached.
A bolt 26a may be attached to the tank surface between a and 24b, and the lower end of the bar 28 may be tightened by this bolt 26a and nut 26b without using the fixing plates 24a and 24b.

Next, as shown in FIG. 6, a heat insulating material 30 for insulating the exterior of the heat exchanger tube 12 is fixed. in this case,
A plate material 34 is attached to the fixed plate 14 via a heat-blocking joint (made of resin, etc.) 32 so that the heat insulating material 30 can also be supported.
Attach. Thereby, the fixing plate 14 has the effect of preventing the heat exchanger tubes 12 and the heat insulating material from slipping down.

On the other hand, the bolt 16a also has a joint 3 that blocks heat.
A supplementary bolt 38a is added through 6. Then, a heat insulating material 30 wrapped around the heat exchanger tube 12
are fixed using the heat insulating sheathing materials 40, 40' and nuts 38b in the same manner as the heat transfer tube 12 was fixed.

[Effect of idea]

As explained above, according to the heat exchanger tube fixing device according to the present invention, the heat exchanger tube can be easily fixed to the tank with an appropriate pressing pressure. Furthermore, the heat exchanger tubes can be easily removed. Furthermore, this fixing device also serves to reinforce the strength of the tank and prevent buckling, displacement, etc. of the heat exchanger tubes.

Furthermore, even if there is a difference in thermal expansion between the heat exchanger tube and the tank, the heat exchanger tube will not separate from the tank.

[Brief explanation of the drawing]

Fig. 1 is an external view showing a state in which heat transfer tubes are fixed by the heat transfer tube fixing device according to the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a cross-sectional view of a heat transfer tube with FIG. 4 is a perspective view of the fixing plate and bar of FIG. 1, FIG. 5 is a perspective view of another embodiment of the fixing plate, and FIG. It is a sectional view showing a state where a heat insulating material is attached around a heat exchanger tube using the heat exchanger tube fixing device concerning . 10... Rigid tank, 12... Heat exchanger tube, 14,
24a, 24b...Fixing plate, 16...Screw, 16
a, 26a... Male screw (bolt), 16b, 26
b, 38b... Female screw (nut), 18, 28...
... Bar, 20 ... Spacer, 22 ... Backing plate, 3
0...Insulating material, 32, 36...Joint, 34...Plate material, 38a...Supplementary bolt, 40, 40'...Insulating exterior material.

Claims (1)

[Claims for Utility Model Registration] In a heat exchanger tube fixing device for fixing a wound heat exchanger tube without fixing it to the surface of a tank, the heat exchanger tube is formed protrudingly in a flange shape around the tank and is wound around the tank. a fixing plate supporting a lower end side of the heat transfer tube; a long bar having a lower end locked to the tank or the fixing plate via a locking means and arranged so as to be able to press the surface of the heat transfer tube; a tightening means disposed in the tank located on the upper end side of the heat transfer tube, tightening the upper end of the bar toward the tank to press the heat transfer tube with the bar and tightly fixing the heat transfer tube to the tank; A fixing device for a heat exchanger tube, characterized in that a heat insulating member is fixed to the outside of the heat tube via a heat insulating joint.