JPS6243233Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a gas heating device that heats gas by introducing gas into the flow pipe through an opening at one end of the flow pipe opened on one side of the flow pipe.

To explain the conventional gas heating device with reference to FIG. 1, a is a channel plate, b is a channel tube, and c is the channel tube b.
A flange provided at one end, d is a bolt for fixing the flange c to the flow path plate a, and e is a packing interposed between the flange c and the flow path plate a,
Gas is introduced into the flow path pipe b from one end opening of the flow path pipe b opened on one side of the flow path plate a, and the gas flows into the flow path pipe b.
and an electric heater (not shown) installed in the same flow pipe b.
When the vehicle passes between the two, it is heated by the same electric heater.

In the gas heating device, as the temperature of the gas heated by the electric heater rises, the temperature of structural members such as the flow pipe b and the flow path plate a rises, and as a result, thermal deformation occurs in these structural members. However, this transformation is
There was a problem that airtightness could not be maintained due to the deformation of the packing part E.

This proposal addresses the above-mentioned problems, and includes a gas heating device that heats the flow pipe by introducing gas into the flow pipe from an opening at one end of the flow pipe opened on one side of the flow pipe. A gasket is interposed between the flange provided around the opening at one end and the flow path plate, the flange is fixed to the flow path plate with bolts, and upper and lower annular members are arranged around the flange. The lower annular member of each of the annular members is welded and fixed to the flow path plate, a packing is interposed between each of the annular members, and the above annular member is fixed to the lower annular member with bolts. A gas heating device characterized in that a flexible sealing member is interposed between the annular member and the flange, and its purpose is to An object of the present invention is to provide an improved gas heating device that can maintain airtightness between a flange and a flow path plate even when thermally deformed.

Next, the gas heating device of the present invention will be explained with reference to an embodiment shown in Figs. 2 and 3. 1 in Fig. 2 is a pressure vessel, a gas inlet nozzle 3 is attached to the pressure vessel 1, and the gas G is It flows through the nozzle 3. A channel plate 2 is attached to the container 1, and the channel tubes 4 are fixed to this channel plate 2. Also, a cylindrical electric heater 8 for heating the gas G in the flow pipe 4
A heater 7 is attached to the outside of the flow pipe 4 to prevent heat dissipation from the flow pipe 4. In addition, as shown in FIG.
A gasket 11 is interposed between the flange 10 provided around the opening at one end and the passage plate 2, and the flange 10 is fixed to the passage plate 2 with bolts 12. Upper and lower annular members 1
4 and 17, and the lower annular member 17 of the annular members is welded and fixed to the flow path plate 2, and a packing 15 is interposed between the annular members 14 and 17, The member 14 is fixed to the annular member 17 below with a bolt 16, and the annular member 14
A flexible sealing member 1 is provided between the flange 10 and the flange 10.
3 is interposed.

The gas heating device of the present invention is configured as described above, and the gas G flowing into the pressure vessel 1 from the nozzle 3 is heated by the electric heater while passing through the annular flow path between the flow path pipe 4 and the electric heater 8. 8 , and flows out of the pressure vessel 1 through the outlet part 9 of the flow path pipe 4 and the outlet nozzle 5 . At this time, the lower end of the flow pipe 4 is
It is fixed by a positioning plate 6 provided at the bottom of the pressure vessel 1 and having a circular hole.

The present invention is a gas heating device that heats gas by introducing gas into the flow pipe 4 from one end opening of the flow pipe 4 which is opened on one side of the flow passage plate 2 as described above. A gasket 11 is interposed between the flange 10 provided around the flow path plate 2 and the flange 10 is fixed to the flow path plate 2 with bolts 12, and upper and lower annular members 14, 17, and the lower annular member 17 of the annular members is welded and fixed to the channel plate 2, and the annular members 14, 17 are
The same annular member 1 as above with a packing 15 interposed therebetween.
4 to the annular member 17 below with bolts 16, and the annular member 14 and flange 10
Since a flexible sealing member 13 is interposed between the
Even if the structural members such as the flow path pipe 4 flow path plate 2 etc. are thermally deformed,
This has the effect of maintaining airtightness between the flange 10 and the channel plate 2.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing a part of a conventional gas heating device, Fig. 2 is a longitudinal side view showing an embodiment of the gas heating device according to the present invention, and Fig. 3 is a longitudinal side view showing the main parts thereof. It is. 2... Channel plate, 4... Channel pipe, 10... Flange, 11, 15... Packing, 14, 17... Annular member, 12, 16... Bolt.

Claims (1)

[Scope of utility model registration request] In a gas heating device that heats gas by introducing gas into the flow pipe from an opening at one end of a flow pipe opened on one side of the flow pipe, a flange provided around the opening at one end of the flow pipe and the flow The flange is fixed to the passage plate with bolts with a gasket interposed between it and the passage plate, upper and lower annular members are arranged around the flange, and the lower annular member of each annular member is fixed to the passage plate with bolts. The above annular member is fixed to the flow path plate by welding, and a gasket is interposed between each of the annular members, and the above annular member is fixed to the lower annular member with bolts. A gas heating device characterized by interposing a flexible sealing member.