Support-free flat steel plate cold box

Abstract

The utility model discloses an unsupported flat steel plate cold box which comprises a cold box body, frame columns are arranged at the four corners of the cold box body, a plurality of cross beams are vertically connected between the adjacent frame columns, panels are arranged on the four side faces of the cold box body, the two sides of the panels are connected with the frame columns, a plurality of stiffening ribs are arranged on the inner sides of the panels, and the stiffening ribs are connected with the frame columns. And the stiffening ribs penetrate through the cross beam. According to the flat steel plate, reinforcing measures are taken on the steel plate used for sealing, the stiffening ribs are arranged on the back face of the steel plate, the effect of replacing a steel support is achieved by fully utilizing the strength of the steel plate after buckling, the flat steel plate can be equivalent to the steel support arranged in a crossed mode, the installation difficulty is lowered, and the installation period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation equipment shells, in particular to the technical field of 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-central support structure. This structure requires the installation of columns, beams, and supporting components on site as the main load-bearing components; at the same time, panels are installed as sealing components. The amount of steel used and the installation workload are relatively large. Summary of the invention

[0003] The purpose of the utility model is to solve the problems in the prior art and to propose a support-free flat steel plate cold box, which uses a flat steel plate of the cold box shell to replace the steel support in the original cold box, thereby reducing the amount of steel used and the installation workload.

[0004] To achieve the above-mentioned purpose, the utility model proposes an unsupported flat steel plate cold box, including a cold box body, frame columns are provided at the four corners of the cold box body, a number of cross beams are vertically connected between adjacent frame columns, panels are provided at the four sides of the cold box body, both sides of the panels are connected to the frame columns, a number of stiffening ribs are provided on the inner side of the panels, and the stiffening ribs are arranged through the cross beams.

[0005] Preferably, the connection between the stiffening rib and the cross beam is reinforced by a stiffening plate.

[0006] Preferably, the cross beam is an H-shaped steel, the stiffening rib is a C-shaped steel, a clearance groove is provided at the connection between the stiffening rib and the cross beam, the cross beam includes a web and wing plates on both sides of the web, the stiffening rib includes a bottom plate and side plates on both sides of the bottom plate, and the side plates close to the panel are protruding from the cross beam and connected to the inner side of the panel.

[0007] Preferably, grooves are provided on the upper and lower sides of the crossbeam, the stiffening plate is arranged in the grooves of the crossbeam, the two ends of the stiffening plate are connected to the wing plates on both sides, and the side of the stiffening plate is connected to the side plate away from the panel.

[0008] Preferably, chamfers are provided at both ends of a side of the stiffening plate close to the stiffening rib.

[0009] Preferably, the stiffening ribs are arranged parallel to the frame columns.

[0010] Preferably, the frame column is a hollow square tube.

[0011] The beneficial effects of the utility model are as follows: the utility model takes reinforcement measures for the steel plate used for sealing, arranges stiffening ribs on the back of the steel plate, and fully utilizes its post-buckling strength to achieve the effect of replacing the steel support. The flat steel plate can be equivalent to the cross-arranged steel supports. According to the test results, this steel plate wall has a full hysteresis curve, high bearing capacity, and a ductility coefficient of up to , and is an excellent anti-lateral displacement component; the utility model greatly reduces the amount of steel support steel, and provides greater lateral stiffness than the original structural system; the beam-column and box plate connection method is simple, which can reduce the processing workload; the installation difficulty is reduced, and the installation period is shortened.

[0012] 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

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a partial enlarged schematic diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of the connection method between the crossbeam and the panel stiffening rib of the utility model;

[0016] Figure 4 yes Figure 3 aa-plane cross-sectional view;

[0017] Figure 5 It is a schematic diagram of the connection method between the beam and the panel of the utility model;

[0018] Figure 6 It is a schematic diagram of the connection between the frame column and the panel of the utility model;

[0019] Figure 7 It is a schematic diagram of the connection between the stiffening rib and the stiffening plate of the utility model.

[0020] In the figure: 1-frame column, 2-cross beam, 4-stiffening rib, 5-panel, 6-stiffening plate. DETAILED DESCRIPTION

[0021] See also Figure 1-7A non-supported flat steel plate cold box comprises a cold box body, frame columns 1 are arranged at the four corners of the cold box body, a plurality of cross beams 2 are vertically connected between adjacent frame columns 1, panels 5 are arranged at the four sides of the cold box body, both sides of the panels 5 are connected to the frame columns 1, a plurality of stiffening ribs 4 are arranged on the inner side of the panels 5, the stiffening ribs 4 are arranged through the cross beam 2, a groove is provided at the connection between the stiffening ribs 4 and the cross beam 2, the connection between the stiffening ribs 4 and the cross beam 2 is strengthened by a stiffening plate 6, the cross beam 2 is an H-shaped steel, the stiffening ribs 4 are a C-shaped steel, the cross beam 2 is a It includes a web and wing plates on both sides of the web, the stiffening rib 4 includes a bottom plate and side plates on both sides of the bottom plate, the side plates close to the panel 5 are protruding with wing plates and connected to the inner side of the panel 5, the upper and lower sides of the crossbeam 2 are provided with grooves, the stiffening plate 6 is arranged in the groove of the crossbeam 2, the two ends of the stiffening plate 6 are connected to the wing plates on both sides, the side of the stiffening plate 6 is connected to the side plate away from the panel 5, the two ends of the stiffening plate 6 close to the stiffening rib 4 are provided with chamfers, the stiffening rib 4 is arranged parallel to the frame column 1, and the frame column 1 is a hollow square tube.

[0022] The spacing of panel stiffening ribs can be appropriately controlled to improve the buckling resistance of the steel plate; the stiffening ribs can be kept connected from top to bottom to ensure that the stiffening ribs can stably transmit vertical force; the vertical connection of the panel can be strengthened to ensure that the panel can stably transmit vertical and horizontal forces; the connection between the panel and the frame column can be strengthened to ensure that the panel can transmit vertical and horizontal forces; the above measures can be used to improve the compression and shear resistance of the panel and achieve the effect of replacing steel support.

[0023] 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. An unsupported flat steel plate cold box, characterized in that: The invention comprises a cold box body, wherein frame columns (1) are provided at four corners of the cold box body, a plurality of cross beams (2) are vertically connected between adjacent frame columns (1), panels (5) are provided at four side surfaces of the cold box body, both sides of the panel (5) are connected to the frame columns (1), a plurality of stiffening ribs (4) are provided on the inner side of the panel (5), and the stiffening ribs (4) are arranged to pass through the cross beams (2).

2. The unsupported flat steel plate cold box according to claim 1, characterized in that: The connection between the stiffening rib (4) and the crossbeam (2) is reinforced by a stiffening plate (6).

3. The unsupported flat steel plate cold box according to claim 1, characterized in that: The cross beam (2) is an H-shaped steel, the stiffening rib (4) is a C-shaped steel, the cross beam (2) comprises a web and wing plates located on both sides of the web, the stiffening rib (4) comprises a bottom plate and side plates on both sides of the bottom plate, the side plates close to the panel (5) protrude from the cross beam (2) and are connected to the inner side surface of the panel (5), and a clearance groove is provided at the connection between the stiffening rib (4) and the cross beam (2).

4. The unsupported flat steel plate cold box according to claim 2, characterized in that: The cross beam (2) is provided with grooves on both upper and lower sides, the stiffening plate (6) is arranged in the groove of the cross beam (2), the two ends of the stiffening plate (6) are connected to the wing plates on both sides, and the side surface of the stiffening plate (6) is connected to the side plate on the side away from the panel (5).

5. The unsupported flat steel plate cold box according to claim 2, characterized in that: Chamfers are provided at both ends of a side of the stiffening plate (6) close to the stiffening rib (4).

6. The unsupported flat steel plate cold box according to claim 1, characterized in that: The stiffening rib (4) is arranged parallel to the frame column (1).

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

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