JPH02109891A - Manufacture of vessel with jacket - Google Patents

Abstract

PURPOSE:To realize reduction of man-hour, increase of efficiency, mass- production and cost reduction, by welding a corrugate plate forming a jacket with a steel plate forming a vessel shell and bending the steel plate welded with the corrugate plate as a unit by a bending roll to form the shell. CONSTITUTION:A corrugate plate 15 is arranged at a slant on a steel plate 11a forming a vessel shell and both edges of the upper and lower ends are fillet-welded by an automatic welder. The recesses 16 of the corrugate plate 15 are welded with steel plate 11a by a resistance welder. The steel plate 11a welded with the corrugate plate 15 is bent as a unit by three-roller bending machine to form the vessel shell. Urethane sleeves with protrusions are used to prevent deformation of the protrusion of the corrugate plate. Flat bars 31 corresponding to the flanges 14 are welded with the vessel shell 11 in the recesses between both edges of the corrugate plate 15 and a spacer 32 is placed on the protrusions 13 and the flanges 14 of the corrugate plate 15 to form a spiral path of the medium by welding the periphery.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a method for manufacturing a jacketed container, in which a jacket is provided around a steel container, such as a food fermentation tank, to serve as a flow path for a heating or cooling medium. [Prior Art] In a conventional jacketed container, for example, as shown in FIG. 11, a jacket 2 is formed by sequentially stacking cross-sectional rings 3 around a container body 1 from below. That is, first, the angle material 3 is bent and formed to match the curvature of the container body 1.
The short side end 4 of the angle member 3 is welded to the container body 1, and the long side end 5 is welded to the lower angle member 3 to form the jacket 2.
is formed. [Problems to be Solved] However, conventional jackets have an angle structure and must be thick, making them heavy. Further, since the welding length is long, there are problems such as a large number of man-hours and an increase in price. Also, after bending and forming the jacket forming member and the body plate separately, the jacket is ready! - Since the jacket is formed by welding the parts to the body plate, there are problems such as increased manufacturing man-hours and a longer construction period. An object of the present invention is to provide a method for manufacturing a jacketed container that can solve the above-mentioned problems. [Means for Solving the Problems] The method for manufacturing a jacketed container of the present invention involves welding a corrugated plate for forming the jacket to a steel plate constituting the container body, and then welding the steel plate to which the corrugated plate is welded. A jacketed container is produced by integrally bending and forming the container using bending rolls. [Function] Since the jacket is formed by wrapping the corrugate plate around the container body, the thickness of the jacket forming material can be made thinner than in the past and the weight of the steel used can be reduced. By continuously welding the parts to the vessel shell, the weld length can be reduced. In addition, by manufacturing a jacketed container by bending and forming a steel plate with a corrugated plate welded into one piece using bending rolls, the number of manufacturing steps can be significantly reduced, making mass production possible and significantly reducing costs. can be reduced. [Example] Hereinafter, one example of the present invention will be described with reference to FIG. The jacket 12 connects the corrugated plate 15 to the container body 1.
It is formed by winding around 1. This corrugated plate 15 has a chevron portion 1 that forms a medium flow path having a trapezoidal cross section.
It is formed by integrally connecting a plurality of strips (two strips in this example) having flanges 14 on both sides of the container body 11 for contacting the container body 11. The upper and lower ends of the corrugated plate 15 are continuously welded around the container body 11 by fillet welding, and the troughs 16 are continuously welded around the container body 11 by resistance welding. In this way, the welding length can be made shorter than in the past. Next, an example of a method for manufacturing a jacketed container will be explained with reference to FIGS. 3 to 6. As shown in FIG. 3, a steel plate 11a constituting the container body 11
A corrugated plate 15 is disposed on top of the corrugated plate 15 in an inclined manner, and the upper and lower ends of the corrugated plate 15 are fixed to the steel plate 11a by fillet welding using an automatic welding machine. Then, the valleys 16 of the corrugated plate 15 are bonded to the steel plate 11 by an automatic resistance welding machine.
It is welded to a. In this way, by automatically welding the corrugated plate 15 to the flat steel plate 11a, a high-quality welded part can be stably obtained. Note that the inclination angle of the corrugated plate 15 in this case is determined so that a medium flow path is formed in a spiral shape when the corrugated plate 15 is molded into the container body. Note that a medium inlet 17 is provided at the lower end of the corrugated plate 15, and an outlet 18 is provided at the upper end. The steel plate 11a to which the corrugated plates 1 and 15 are welded is
The three-roller bending machine shown in FIG. 4 integrally bends and forms the container body. In this case, the upper roll 23 in contact with the steel plate 11a is constructed by fitting a urethane sleeve 22 with a smooth surface onto a roll cylinder 21, as shown in FIG. On the other hand, the lower roll 26 in contact with the corrugated plate 15 is constructed by fitting a urethane sleeve 25, which is formed with a chevron 24 to prevent the corrugated peak from collapsing, into the roll cylinder 21 so as to be movable in the axial direction. Then, as shown in FIGS. 4(a) to 4(C), while adding a reduction blade to the -L roll 23, the lower roll 26 is rotated at the same time to form a jacketed container body. And steel plate 1
Both ends of the corrugated plate 1a are butt-welded, and a spacer piece is welded between both ends of the corrugated plate 15 to form a spiral medium flow path. The connection method in this case will be explained with reference to FIGS. 7 and 8. A flat par 31 corresponding to the flange 14 is welded to the container body 11 at the trough between both ends of the corrugated plate 5. Then, a spacing piece 32 having a shape that extends over the chevron 13 and flange 14 of the corrugated plate 15 is placed, and its periphery is welded to form a spiral flow path for the medium. In this way, by flowing the medium in a spiral, the pressure loss is reduced and the velocity of the medium is J: yi! This makes it possible to improve thermal efficiency. The jacketed container bodies thus produced are stacked one on top of the other as shown in FIG. 2, depending on the required heat transfer area, to produce a jacketed container. Next, if the container has a large diameter, move the container body in the circumferential direction, for example, by 2
A case where two half-periphery container bodies are manufactured by dividing them and welded with corrugated plates, and these are welded and connected together on site will be explained with reference to FIGS. 9 and 10. As shown in FIG. 9, a corrugated plate 15 is welded onto the steel plate 11a forming half the circumference of the container body 11 in the same manner as described above. Note that blind plates 19 are welded to both ends of the corrugated plate 15 to perform an airtightness test. Then, in the same manner as described above, it is bent and formed in one piece using rolls to form half the circumference of the jacketed container body. Then, as shown in the developed view of Fig. 10, the medium meandered and flowed from below in the -L direction.・15
Alternately cut out the ends of the . Headers 40 are provided thereon, and media inlets 17 and outlets 18 are provided in these headers. 2. As shown above, wrap the jacketed container body around half the circumference.
These shell plates 11a are welded and connected to produce a container shell for one round. Then, depending on the required heat transfer area, these container bodies are stacked one above the other as shown in FIG. 2 to produce a jacketed container. In addition, although the above-mentioned embodiment explained the case where the container body is divided into two parts, it may be divided into four parts etc. depending on the size of the container body.

【Effect of the invention】

The method for manufacturing a jacketed container of the present invention is as described above, and costs can be reduced by reducing the weight of the jacket-forming member and shortening the welding length compared to conventional methods. Further, by integrally bending and forming the steel plate to which the corrugated plate is welded, it is possible to reduce the number of man-hours, improve efficiency, mass production, and reduce costs.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of essential parts showing one embodiment of the present invention, Fig. 2 is an external view of a jacketed container, Fig. 3 is an explanatory view of a state in which a corrugated plate is welded to a steel plate, and Fig. 4 (a) ) ~
(C) is an explanatory diagram showing the procedure for integrally bending a steel plate to which a corrugated plate is welded, Figures 5 and 6 are cross-sectional views of the upper roll and lower roll, respectively, and Figure 7 shows the installation of the spacing piece. An explanatory diagram of the state, FIG. 8 is a sectional view taken along the line ■-■ in FIG. 7, and FIGS. 9 and 10 are explanatory diagrams of the state in which a corrugated plate is welded to a steel plate in another embodiment and a meandering flow path. FIG. 11 is a sectional view of a main part of a conventional jacketed container. 11... Container body 11a... Steel plate 12... Jacket 15... Corrugated plate Applicant's agent Patent attorney Takehiko Suzue Figure 2 Figure 6 Figure

Claims (1)

[Claims] A jacketed container characterized in that a jacketed container is manufactured by welding a corrugated plate for jacket formation to a steel plate constituting the container body, and then bending and forming the steel plate to which the corrugated plate is welded together using bending rolls. production method.