Composite tube plate integral serial sheet type protective gas cooler

Abstract

The utility model discloses a composite tube plate integral serial sheet type protective gas cooler, which relates to the field of protective gas cooling and comprises an outer shell, heat exchange tubes and fins. The outer shell comprises a U-shaped protective plate, side plates and a first tube plate, the pair of side plates are fixedly installed on the U-shaped protective plate, the heat exchange tubes are U-shaped heat exchange tubes and are integrally bent, the U-shaped heat exchange tubes are installed in the outer shell, integral fins are connected to the U-shaped heat exchange tubes in an expanded mode, and the first tube plate and the second tube plate are fixedly installed on the outer shell. The first tube plate is fixedly installed on the pair of side plates on the opposite side of the U-shaped protection plate to form an outer shell, the second tube plate is fixedly installed on the other side of the first tube plate through a connecting protection piece, and the water chamber is fixedly installed on the second tube plate. And a heat exchange tube is blocked, a welded junction is heated at high temperature, and water leaks into the furnace once the welded junction cracks, so that the dew point of shielding gas is increased.

Description

Technical Field

[0001] This utility model relates to the field of protective gas cooling, specifically a composite tube sheet integral series plate type protective gas cooler. Background Technology

[0002] The protective gas (N2+H2) cooler is a strip cooling device used in cold rolling mills for strip galvanizing lines and continuous annealing furnaces. These furnaces are filled with a protective gas with a low dew point and low oxygen content, allowing the strip to complete its processing under a reducing protective atmosphere. This cooler is a key piece of equipment in the strip cooling process, and its structure generally adopts a finned tube heat exchanger.

[0003] However, traditional coolers suffer from structural defects that lead to scaling in the water chamber, blockage of heat exchange tubes, and cracks in the weld joints due to high temperatures, which can cause water to leak into the furnace and raise the dew point of the protective gas. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a composite tube sheet integral series plate type protective gas cooler, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite tube sheet integral finned protective gas cooler, comprising an outer shell, heat exchange tubes, and fins; the outer shell includes a U-shaped protective plate, side plates, and a first tube sheet; a pair of side plates are fixedly installed on the U-shaped protective plate; the heat exchange tubes are U-shaped heat exchange tubes and are bent as a single tube; a plurality of U-shaped heat exchange tubes are installed within the outer shell; integral fins are expanded onto the plurality of U-shaped heat exchange tubes; the first tube sheet is fixedly installed on a pair of side plates opposite to the U-shaped protective plate to form the outer shell; a second tube sheet is fixedly installed on the other side of the first tube sheet via a connecting protective component; a water chamber is fixedly installed on the second tube sheet; one end of a plurality of U-shaped tubes penetrates the first tube sheet and the second tube sheet, and the plurality of U-shaped tubes are welded to the second tube sheet and the first tube sheet.

[0006] Preferably, a first support plate and a second support plate for supporting a plurality of U-shaped heat exchange tubes are fixedly installed inside the outer shell.

[0007] Preferably, a sealing gasket and a water chamber flange are provided between the second tube sheet and the water chamber.

[0008] Preferably, an inlet pipe and an outlet pipe are fixedly connected to the water chamber, and inlet and outlet flanges are fixedly connected to both the inlet pipe and the outlet pipe.

[0009] Preferably, a valve is provided on the water inlet pipe.

[0010] Preferably, the connecting protective component is a composite connecting guard plate, and the composite connecting guard plate is frame-shaped.

[0011] Preferably, the side panel adopts an edge-bent design.

[0012] Beneficial effects

[0013] This utility model provides a composite tube sheet integral series plate type protective gas cooler, which has the following beneficial effects:

[0014] 1. By using U-shaped heat exchange tubes and bending them as a single tube, it can be ensured that there are no weld points inside the furnace. By making the heat exchange tubes pass through the first tube sheet and the second tube sheet and weld them to the first tube sheet and the second tube sheet, all weld joints can be outside the furnace, thus effectively preventing water leakage into the furnace.

[0015] 2. By using integral fins and expanding the fins to the heat exchange tubes as a whole, the heat exchange area per unit volume can be increased, which greatly improves the heat exchange efficiency. Attached Figure Description

[0016] Figure 1 This is an exploded view of the present invention;

[0017] Figure 2 This is the front view of the present invention.

[0018] In the diagram: 1. U-shaped protective plate; 2. U-shaped heat exchange tube; 3. First support plate; 4. Fin; 5. Second support plate; 6. Side plate; 7. First tube sheet; 8. Composite connection protective plate; 9. Second tube sheet; 10. Sealing gasket; 11. Water chamber flange; 12. Valve; 13. Inlet and outlet flanges; 14. Water chamber. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Wherein, directional terms such as "upper" and "lower" mentioned herein are used in conjunction with... Figure 1 The orientation is used as a reference.

[0020] Please see Figures 1-2This utility model provides a technical solution: a composite tube sheet integral finned protective gas cooler, including an outer shell, heat exchange tubes, and fins 4; the outer shell includes a U-shaped protective plate 1, side plates 6, and a first tube sheet 7, a pair of side plates 6 are fixedly installed on the U-shaped protective plate 1, the heat exchange tubes are U-shaped heat exchange tubes 2 and are bent from a single tube, a plurality of U-shaped heat exchange tubes 2 are installed in the outer shell, and integral fins 4 are expanded and connected to the plurality of U-shaped heat exchange tubes 2, the first tube sheet 7 is fixedly installed on a pair of side plates 6 on the opposite side of the U-shaped protective plate 1 to form the outer shell, a second tube sheet 9 is fixedly installed on the other side of the first tube sheet 7 through a connecting protective component, a water chamber 14 is fixedly installed on the second tube sheet 9, and a plurality of U-shaped tubes have one end passing through the first tube sheet 7 and the second tube sheet. 9. Several U-shaped tubes are welded to the second tube sheet 9 and the first tube sheet 7. By installing the U-shaped protective plate 1, the side plate 6, and the first tube sheet 7, a relatively closed outer shell can be formed. Heat exchange tubes can be installed to perform heat exchange. By using U-shaped heat exchange tubes 2 and bending them as a whole tube, it can be ensured that there are no weld points inside the furnace. By making the heat exchange tubes pass through the first tube sheet 7 and the second tube sheet 9 and weld them to the first tube sheet 7 and the second tube sheet 9, all weld joints can be placed outside the furnace, thereby effectively preventing water leakage into the furnace and avoiding the rise of the protective gas dew point. By using integral fins 4 and making the fins 4 integrally expanded with the heat exchange tubes, the heat exchange area per unit volume is relatively large, which greatly improves the heat exchange efficiency.

[0021] Furthermore, a first support plate 3 and a second support plate 5 are fixedly installed inside the outer shell to support several U-shaped heat exchange tubes 2. The installation of the first support plate 3 and the second support plate 5 can support several U-shaped tubes with fins 4.

[0022] Furthermore, a sealing gasket and a water chamber flange 11 are provided between the second tube sheet 9 and the water chamber 14. The sealing gasket can play a sealing role, and the water chamber flange 11 is installed to facilitate the installation of the water chamber 14.

[0023] Furthermore, an inlet pipe and an outlet pipe are fixedly connected to the water chamber 14, and inlet and outlet flanges 13 are fixedly connected to both the inlet pipe and the outlet pipe. By installing the inlet pipe and the outlet pipe, it can be used for water intake and drainage.

[0024] Furthermore, a valve 12 is installed on the water inlet pipe to control the water inlet flow.

[0025] Furthermore, the connecting protective component is a composite connecting guard plate 8, which is frame-shaped. By installing the composite connecting guard plate 8, the composite connecting guard plate 8 is connected to the first tube sheet 7 and the second tube sheet 9 to form a cavity. An inspection valve for inspection is set on the cavity, which can observe the working condition of the cavity at any time. This allows the second tube sheet 9 and the water chamber 14 connected to it to be kept away from the heat source, thereby effectively preventing pipe opening cracks caused by scaling.

[0026] Furthermore, the side panel 4 adopts an edge-bent design. By setting the side panel to an edge-bent design, its rigidity can be enhanced, thereby improving the stability of the outer shell.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite tube sheet integral stringer protective gas cooler characterized by, The application relates to a heat exchange device, which comprises an outer shell, heat exchange pipes and fins (4); the outer shell comprises a U-shaped protective plate (1), side plates (6) and a first pipe plate (7); a pair of the side plates (6) are fixedly installed on the U-shaped protective plate (1); the heat exchange pipes are U-shaped heat exchange pipes (2) and are integrally bent; a plurality of the U-shaped heat exchange pipes (2) are installed in the outer shell; a plurality of the U-shaped heat exchange pipes (2) are integrally provided with the fins (4); the first pipe plate (7) is fixedly installed on a pair of the side plates (6) on the opposite side of the U-shaped protective plate (1) to form the outer shell; the other side of the first pipe plate (7) is fixedly provided with a second pipe plate (9) through a connecting protective piece; the second pipe plate (9) is fixedly provided with a water chamber (14); one end of the U-shaped heat exchange pipe (2) penetrates through the first pipe plate (7) and the second pipe plate (9); and the U-shaped heat exchange pipe (2) is welded with the second pipe plate (9) and the first pipe plate (7).

2. The integrated gaskit cooler of claim 1, wherein, The outer shell is fixedly provided with a first supporting plate (3) and a second supporting plate (5) for supporting the U-shaped heat exchange pipes (2).

3. The integrated gaskit cooler of claim 1, wherein, Sealing pads (10) and water chamber (14) methods (11) are arranged between the second pipe plate (9) and the water chamber (14).

4. The integrated gaskit cooler of claim 1, wherein, The water chamber (14) is fixedly connected with an inlet pipe and an outlet pipe; the inlet pipe and the outlet pipe are fixedly connected with inlet and outlet flanges (13).

5. The integrated gaskit cooler of claim 4, wherein, The inlet pipe is provided with a valve (12).

6. The integrated gaskit cooler of claim 1, wherein, The connecting protective piece is a composite connecting protective plate (8), and the composite connecting protective plate (8) is in the shape of a frame.

7. The integrated gaskit cooler of claim 1, wherein, The side plates (6) are designed by edge bending.

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