JPS5812045Y2 - heat exchanger tube equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heat exchanger tube device composed of a plurality of heat exchanger tubes meandering in the vertical direction.

Conventionally, in this type of heat exchanger tube device, each heat exchanger tube that meanders in the vertical direction is assembled into its casing, and then the inlet and outlet portions of each heat exchanger tube that protrude outside the casing are connected by headers. Therefore, there are space constraints when conducting water pressure tests on the connections between the header and each heat transfer tube, making it extremely difficult to perform water pressure tests.

Furthermore, since the heat exchanger tubes are assembled one by one to the casing, work efficiency is unavoidably low.

The purpose of this idea is to integrate the heat exchanger tube and header into a block so that water pressure tests can be easily performed outside the casing, and installation to the casing is also simple.

An embodiment of this invention will be described below based on an exhaust gas boiler.

In Figure 1, 1 is the boiler body, 2 is the smoke pipe, and 3 is the smoke pipe 2.
A reheating burner 4 is arranged at the lower side of the reheating burner 3, and numeral 4 is a heat exchanger tube device arranged at the lower part of the reheating burner 3.

The heat exchanger tube device 4 is composed of a plurality of heat exchanger tubes 5 (5□ to 5n) meandering upward as shown in FIGS. 2 and 3.
It is used to further superheat the steam taken out from the top of the boiler with the exhaust gas at the boiler inlet.

The heat exchanger tubes 5 (51 to 5n) are arranged in parallel with a required spacing, and adjacent ones are connected to each other via a protector 6, as shown in FIG.

Further, between the meandering portions of the heat exchanger tubes 5, they are supported by support fittings 7 provided by welding.

Each inlet portion 8 and each outlet portion 9 of the heat exchanger tube 5 protruding in the same direction penetrates a wall material 11 forming a part of the casing 10 of the heat exchanger tube 5 and is connected to an inlet header 12 and an outlet, respectively, by a ladder 13. has been done.

The heat exchanger tube device 4 which has been made into blocks as described above is the heat exchanger tube 5
into the casing 10, and insert the insertion opening 14 into the wall material 1.
1, and the lower part of the heat exchanger tube 5 is fixed onto a support beam 15 provided in the casing 10 via a presser plate 16 with several bolts 17.

Thereafter, the steam inlet pipe 18 and the steam outlet pipe 19 are connected to the inlet header 12 and the outlet to the ladder 13, respectively, as shown in FIG.

The portion of the support beam 15 that supports the heat exchanger tube 5 has a recess 20 for positioning the heat exchanger tube 5, and the recess 20 is formed to be slightly larger than the tube diameter in order to release expansion of the heat exchanger tube 5.

Further, the heat exchanger tube 5 is fixed to the support beam 15 via the above-mentioned protector 6 in order to prevent wear due to vibration.

Note that since the heat transfer tube device 4 is disposed below the reheating burner 3, it can effectively absorb radiant heat from the burner flame.

As described above, according to this invention, a plurality of heat exchanger tubes, together with an inlet header and an outlet header, are assembled into blocks in the wall material that forms a part of the casing of the heat exchanger tubes, so that the above-mentioned To easily perform a water pressure test on a connecting portion between each header and each heat exchanger tube at the most convenient place, and to improve workability by making it easier to assemble the heat exchanger tubes to a casing.

In addition, since the inlet and outlet portions of the heat exchanger tubes penetrate the wall material forming a part of the casing and are directly connected to the inlet header 12 and outlet header 13, good sealing performance is achieved.
It can also be used as a high-temperature, high-pressure heat exchanger tube.

Furthermore, adjacent heat exchanger tubes are connected at multiple places, and the lower part of the heat exchanger tube is fixed on the support beam in the casing with a support fitting, so that the heat exchanger tube is fixed in a block state. Even when installed in a location exposed to high-temperature gas flow or high-temperature radiant heat, it can sufficiently absorb the elongation of the heat exchanger tubes 5 due to thermal expansion, prevent bending or deformation of the heat exchanger tubes 5, and prevent vibrations and high-speed This has the effect of preventing deformation of the heat transfer tube due to gas flow.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional front view of an exhaust gas boiler equipped with the heat exchanger tube device of this invention, Figure 2 is a side view of the heat exchanger tube device, Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is It is a perspective view of the connection and support part of a heat exchanger tube. 4... Heat exchanger tube device, 5 (51-5n)...
... Heat exchanger tube, 6 ... Protector, 1 ...
・Supporting metal fittings, 8...Inlet section, 9...Outlet section, 10...Casing, 11...
Wall material, 12...Entrance header, 13...
Outlet header, 14... Insertion port, 15...
・Support beam.

Claims (1)

[Scope of utility model registration request] A plurality of heat exchanger tubes meandering in the vertical direction are arranged horizontally in parallel with the required spacing, and adjacent ones are interconnected at multiple points, and each inlet portion of each heat exchanger tube protrudes in the same direction. Each outlet is connected to an inlet header and an outlet header by passing through the wall material forming a part of the casing of the heat exchanger tube, and the heat exchanger tube is inserted into the casing, and the insertion port is connected to the wall material by the wall material. A heat exchanger tube device characterized in that the lower part of each heat exchanger tube is closed and fixed to a support beam in the casing by a support fitting.