JPH0569148U - Support pipe for walking beam heating furnace - Google Patents

Abstract

(57) [Abstract] [Purpose] Providing a structure for a walking beam furnace support pipe that can be pre-integrated into a walking beam frame so that it can be transported by ordinary transportation means and can simplify the assembly procedure on site. . [Structure] The walking beam frame and the support pipe can be transported by dividing the support pipe that supports the movable skid pipe on which the steel piece is placed in the walking beam heating furnace so that it can be connected between the walking beam and the skid pipe. It can be assembled to any extent, and the post pipes that were conventionally required for assembly are no longer required, which simplifies assembly.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a support pipe that supports a skid pipe on which a billet is placed in a walking beam heating furnace.

[0002]

[Prior Art]

 In a walking beam heating furnace, fixed and movable skid pipes are usually arranged in multiple rows in the width direction of the furnace, and steel pieces are placed on the rows. Transport is in progress. This movable skid pipe is supported by a support pipe erected on a walking beam arranged under the furnace of the heating furnace.

Since this support pipe has a very high temperature inside the heating furnace, it has a water-cooled double structure, and a predetermined opening is provided in the hearth floor so as not to hinder the operation of the support pipe. As a water-tight seal device, a seal box is installed on the hearth and a seal trough is installed on the walking beam frame.

When assembling the support pipe, a post pipe is erected from the walking beam frame between the seal trough and the support pipe as seen in, for example, Japanese Utility Model Application Laid-Open No. 54-192707. , The procedure is to fix this post pipe above the seal trough.

As described above, the procedure for assembling the walking beam heating furnace is complicated, which is one of the causes of delaying the construction period of the heating furnace.

In the construction of such a heating furnace, it is desirable from the viewpoint of construction efficiency to assemble the main members in a factory as much as possible and to bring them into a construction site to reduce the number of assembly steps on the site. However, fixing the support pipes to the frame of the walking beam in advance would exceed the normal transportation limit in terms of size and weight, and the above conventional structure cannot be combined as it is.

This also applies to the fixed support pipe, and the fixed support pipe is connected to the hearth beam on site.

[0008]

[Problems to be solved by the device]

 An object of the present invention is to provide a structure of a supporting pipe of a walking beam furnace which can be pre-integrated into a frame of a walking beam so that it can be carried by a usual transportation means and can simplify an assembling procedure on site. Especially.

[0009]

[Means for Solving the Problems]

 The present invention is characterized in that, in a support pipe that supports a skid pipe on which a steel slab is placed in a walking beam heating furnace, the walking beam and the skid pipe are connectably divided.

[0010]

[Action]

 The support pipe will be divided into multiple parts within the transportation restriction range, and the walking beam frame side will be fixedly combined with the walking beam frame in advance and transported to the site, where it will be connected to other parts at the construction site.

As a result, the post pipe, which was conventionally required to fix the support pipe to the walking beam frame, becomes unnecessary, and the assembly is simplified.

[0012]

【Example】

 FIG. 1 shows a structure example of a support pipe according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a support pipe fixedly installed on the walking beam frame 2 and supporting a movable skid pipe (not shown) for placing a steel piece in the walking beam heating furnace through the hearth 3 for cooling. It is formed as a double pipe containing an inner pipe 4 for flowing water. Reference numeral 5 denotes a seal box fixed to the hearth 3, which has a scale scraping plate 6 at the lower end and is provided in a seal trough 7 for sealing a gap between the outer periphery of the support pipe 1 and the walking beam frame 2. It is immersed in the sealing water 8 to form a sealing mechanism.

The support pipe 1 is divided into an upper support pipe 11 and a lower support pipe 12 at a position between the walking beam and the movable skid pipe, that is, above the sealing mechanism above the walking beam frame 2. There is. Then, the outer diameter of the upper support pipe 11 is formed slightly smaller than the inner diameter of the lower support pipe 12, and at the time of assembly, the upper support pipe 11 is fitted and fixed in the lower support pipe 12 for easy mounting. Can be connected. Further, the inner pipe 4 inside the support pipe 1 is also divided at substantially the same position as the division position of the support pipe 1 and can be connected by the joining member 10. The lower support pipe 12 is welded to the base plate 9 on the walking beam frame 2.

Further, the connection of the support pipe is made by welding with a reducer. The inner pipe may be directly connected to another pipe.

As described above, the lower support pipe 12 of the support pipe 1 divided into the upper and lower parts is carried in advance to the assembly site in a state where the lower support pipe 12 is fixedly combined with the walking beam frame 2 and the seal trough 7 is also incorporated. Then, the assembly of the support pipe portion is completed by connecting the inner pipe 4 and the upper and lower support pipes 11 and 12 which are divided into upper and lower parts.

[0016]

[Effect of the device]

 The present invention has the following effects.

(1) Since the support pipe is divided into a plurality of parts and one side is incorporated into the walking beam frame to be transported to the site, the post pipe required for fixing the support pipe to the walking beam frame becomes unnecessary. , Easy to assemble.

(2) By dividing the support pipe, the diameter of the upper support pipe can be made small, so that the absorption heat loss is reduced and the energy saving effect is improved.

(3) Since the post pipe is unnecessary, the seal trough is also small, and the overall structure can be made compact.

(4) Further, since the post pipe is not required, it is structurally simplified, the lateral fluctuation of the support pipe is eliminated, and the structure is stable.

(5) Similar effects can be expected by dividing the fixed support pipe.

[Brief description of drawings]

FIG. 1 shows an outline of a structure of a support pipe portion according to the present invention.

[Explanation of symbols]

 1 Support pipe 2 Walking beam frame 3 Hearth 4 Inner pipe 5 Seal box 6 Scale scraping plate 7 Seal trough 8 Water for sealing 9 Base plate 10 Joining member 11 Upper support pipe 12 Lower support pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroki Ezaki 59 Nippon Steel Plant Design Co., Ltd., 46 Nakahara, Tobata-ku, Kitakyushu, Fukuoka

Claims (1)

[Scope of utility model registration request] 1. A support pipe for supporting a skid pipe on which a steel slab is placed in a walking beam heating furnace, wherein the walking pipe and the skid pipe are connectably divided so as to be connectable.