Corrugated steel plate cold box

Abstract

The utility model discloses a corrugated steel plate cold box which comprises frame stand columns, connecting beams and corrugated panels, the adjacent frame stand columns are connected through the connecting beams, the corrugated panels are fixed to the outer sides of the connecting beams, the two ends of each corrugated panel are connected with the frame stand columns in a sealed mode, and the corrugated panels and the frame stand columns define a box body space. The corrugated steel plate is adopted to replace a connecting beam and a steel support in an original cold box, the corrugated steel plate is used for sealing and simultaneously serving as a structure support, the buckling load of the steel plate can be greatly improved, regular corrugations of the corrugated steel plate are beneficial to manufacturing and machining, and the steel consumption and the installation workload are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation equipment shells, in particular to the technical field of supporting cold boxes. Background Art

[0002] Cold boxes are widely used in the field of air separation equipment as the insulation shell and supporting structure of air separation equipment. They have a large aspect ratio (up to 17m) and a large height (up to 73m). This type of steel structure requires greater lateral stiffness and generally adopts a steel frame-center support structure.

[0003] The structure requires the installation of columns, beams, and supporting components on site as the main load-bearing components; panels are also installed as sealing components. The columns, beams, and supporting components used in the steel frame-center support cold box structure all need to be installed in the factory or on site. In order to achieve effective connection of the three types of components, more connecting plates are required, more welding or bolts are used, and the amount of steel used and the installation workload are relatively large. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide a corrugated steel plate cold box which can solve the above problems.

[0005] To achieve the above-mentioned purpose, the utility model proposes a corrugated steel plate cold box, including frame columns, connecting beams and corrugated panels. Adjacent frame columns are connected by connecting beams, corrugated panels are fixed to the outside of the connecting beams, both ends of the corrugated panels are sealed and connected to the frame columns, and the corrugated panels and the frame columns enclose a box space.

[0006] Preferably, the corrugated panel comprises crests and troughs that are alternately arranged in sequence, and the cross-sections of the crests and troughs are both isosceles trapezoids.

[0007] Preferably, the height of the isosceles trapezoid is 30-100 mm, the length of the base is 40-50 times the wall thickness, and the inclination angle of the trapezoid hypotenuse is 45-60°.

[0008] Preferably, the connecting beam is an H-shaped steel.

[0009] Preferably, the frame columns are hollow square tubes.

[0010] Preferably, the frame columns are seal-welded to the corrugated panels.

[0011] Preferably, the corrugated panel does not protrude from the surface of the connecting beam.

[0012] The beneficial effects of the utility model are as follows: the utility model adopts corrugated steel plates to replace the connecting beams and steel supports in the original cold box. The corrugated steel plates are sealed and also serve as structural supports, which can greatly increase the buckling load of the steel plates. The regularized corrugations are conducive to manufacturing and processing, and reduce the amount of steel and the installation workload. The corrugated steel plates can be equivalent to the cross-arranged connecting beams and steel supports. According to the test results, the corrugated steel plates can have higher out-of-plane stiffness and buckling strength without using stiffening ribs. When the stiffness is similar, the amount of steel used is about 30% less than that of welded H-shaped steel.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 A local enlarged schematic diagram of point A;

[0016] Figure 3 It is a connection diagram of the corrugated steel plate and the crossbeam of the utility model;

[0017] Figure 4 This is a connection diagram of the corrugated steel plate and the frame column of the utility model;

[0018] Figure 5 This is a schematic diagram of the original supporting cold box.

[0019] In the figure: 1-frame column, 2-connecting beam, 3-corrugated panel. DETAILED DESCRIPTION

[0020] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , a corrugated steel plate cold box, comprising a frame column 1, a connecting beam 2 and a corrugated panel 3, adjacent frame columns 1 are connected by a connecting beam 2, a corrugated panel 3 is fixed on the outer side of the connecting beam 2, both ends of the corrugated panel 3 are sealed and connected to the frame column 1, and the corrugated panel 3 and the frame column 1 enclose a box space; the corrugated panel 3 comprises crests and troughs arranged alternately in sequence, and the cross-sections of the crests and troughs are both isosceles trapezoids; the height of the isosceles trapezoid is 30-100mm, the length of the bottom side is 40-50 times the wall thickness, and the inclination angle of the trapezoid hypotenuse is 45-60°; the connecting beam 2 is an H-shaped steel; the frame column 1 is a hollow square tube; the frame column 1 is sealed and welded to the corrugated panel 3; the corrugated panel 3 does not protrude from the surface of the connecting beam.

[0021] Properly control the wave height and spacing of the corrugated steel plate to improve the anti-buckling capacity of the steel plate;

[0022] Connecting beams are set at appropriate locations to ensure that the corrugated steel plate cold box does not deform as a whole;

[0023] Strengthen the connection between the corrugated steel plate and the frame column to ensure that the corrugated steel plate can transmit horizontal forces.

[0024] The above measures can improve the panel's anti-bending, anti-flexing and anti-shearing capabilities, thereby achieving the effect of replacing connecting beams and steel supports.

[0025] Figure 5 This is a schematic diagram of an existing supporting cold box. Compared with the existing cold box, the utility model has the following advantages:

[0026] 1) Significantly reduce the amount of steel used for steel support;

[0027] 2) Significantly reduce the amount of steel used in connecting beams;

[0028] 3) Provide sufficient lateral stiffness;

[0029] 3) The connection method between beams, columns and box panels is simple, which can reduce the processing workload;

[0030] 4) Reduce installation difficulty and shorten manufacturing cycle.

[0031] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A corrugated steel plate cold box, characterized in that: The invention comprises a frame column (1), a connecting beam (2) and a corrugated panel (3); adjacent frame columns (1) are connected by the connecting beam (2); a corrugated panel (3) is fixed to the outer side of the connecting beam (2); both ends of the corrugated panel (3) are sealedly connected to the frame column (1); and the corrugated panel (3) and the frame column (1) enclose a box space.

2. The corrugated steel plate cold box according to claim 1, characterized in that: The corrugated panel (3) comprises wave crests and wave troughs which are arranged alternately in sequence, and the cross sections of the wave crests and wave troughs are both isosceles trapezoidal.

3. The corrugated steel plate cold box according to claim 2, characterized in that: The height of the isosceles trapezoid is 30-100 mm, the length of the base is 40-50 times the wall thickness, and the inclination angle of the trapezoid hypotenuse is 45-60°.

4. The corrugated steel plate cold box according to claim 1, characterized in that: The connecting beam (2) is an H-shaped steel.

5. The corrugated steel plate cold box according to claim 1, characterized in that: The frame column (1) is a hollow square tube.

6. The corrugated steel plate cold box according to claim 1, characterized in that: The frame column (1) and the corrugated panel (3) are seal-welded.

7. The corrugated steel plate cold box according to claim 1, characterized in that: The corrugated panel (3) is arranged so as not to protrude from the surface of the connecting beam (2).

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