Supporting structure of heat exchange tube

Abstract

A supporting structure of a heat exchange tube comprises a flat filler strip provided with a first surface, the direction of the first surface is recorded as upward, and the length direction of the flat filler strip is recorded as a first direction; the special-shaped filler strip extends in the first direction and is provided with a plurality of first arc sections which are sequentially arranged in the first direction, each first arc section is integrally concave downwards, and a concave cavity which is matched with the outer circumferential wall of the heat exchange tube and provided with an opening in the top is formed in the inner circumferential surface of each first arc section; the bottom of the peripheral surface of each first arc section is supported on the first surface of the flat filler strip and is restrained together with the flat filler strip; and a convex part which protrudes upwards is formed at the joint of the adjacent first arc sections. Compared with the prior art, the heat exchange tube can be well supported.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a supporting structure of a heat exchange tube. Background Art

[0002] The existing wound tube heat exchanger mainly includes heat exchange tubes spirally wound on a central tube from the inside to the outside, and each layer of heat exchange tubes is positioned by support structures such as gaskets and tube clamps.

[0003] For example, the structure disclosed in the utility model patent "A heat exchange tube gasket structure" with patent number ZL201621015355.9 (authorization announcement number CN205980909U) includes a gasket body, on the first side of which a plurality of arc-shaped grooves matching the heat exchange tubes are arranged at intervals; a flexible first gasket is provided on the first side, and the first gasket is attached to the first side and the groove surface of the arc-shaped groove.

[0004] Another example is the utility model patent No. 201320173135.9 "Special-shaped gasket for wound tube heat exchanger" (authorization announcement No. CN203240942U), which includes a base, with arc-shaped grooves stamped in sequence along the length direction of the base, the axes of the arc-shaped grooves are parallel to each other, and adjacent arc-shaped grooves are separated by convex ribs, and the angle between the axis of the arc-shaped groove and the plumb line is 3 to 30°. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a support structure for heat exchange tubes in view of the current status of the prior art, so as to better support the heat exchange tubes.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a support structure of a heat exchange tube, comprising:

[0007] The flat gasket strip has a first surface, and the first surface is oriented upward, and the length direction of the flat gasket strip is denoted as a first direction;

[0008] It is characterized by also including:

[0009] The special-shaped gasket strip extending along the first direction has a plurality of first arc segments arranged in sequence along the first direction, each first arc segment is concave as a whole, and the inner circumferential surface of each first arc segment forms a concave cavity with an opening on the top that matches the outer circumferential wall of the heat exchange tube, the bottom of the outer circumferential surface of each first arc segment is supported on the first surface of the flat gasket strip and constrained together with the flat gasket strip; the connection between adjacent first arc segments forms a convex portion protruding upward.

[0010] In this way, each first arc segment of the special-shaped gasket strip can better support the heat exchange tube, and when the heat exchange tube expands due to heat, the first arc segment can deform to provide expansion space for the heat exchange tube. And because the bottom of the outer peripheral surface of each first arc segment is supported on the first surface of the flat gasket strip and constrained together with the flat gasket strip, a hollow structure is formed between two adjacent first arc segments and the flat gasket strip. The hollow structure can reduce the weight of the supporting structure and is also conducive to the passage of heat exchange fluid.

[0011] Preferably, adjacent first arc segments are connected by an upwardly arched second arc segment, and the convex portion is formed by the upwardly arched second arc segment. The second arc segment can protect the heat exchange tube and avoid damage to the heat exchange tube, and the provision of the second arc segment can provide a larger deformation space for the first arc segment.

[0012] Preferably, the second arc segment is smoothly connected to the first arc segment as one. The first arc segment and the second arc segment in the utility model can be formed by bending a cushion strip.

[0013] Preferably, the radius of the second circular arc segment is smaller than the radius of the first circular arc segment.

[0014] Furthermore, the central angle corresponding to each first arc segment is greater than 180°, so that the heat exchange tube can be inserted into the concave cavity through the opening at the top of the first arc segment, thereby preventing the heat exchange tube from accidentally detaching from the gasket strip.

[0015] In the above schemes, preferably, the bottom of the outer circumferential surface of each first arc segment is connected to the first surface of the flat gasket strip by welding.

[0016] Preferably, the bottom of the outer peripheral surface of each first arc segment is a plane and fits with the first surface of the flat pad strip, so that the first arc segment and the flat pad strip can be constrained together more stably.

[0017] Preferably, the bottom of the inner circumferential surface of each first arc segment is a plane so that the outer circumferential wall of the heat exchange tube can be supported thereon.

[0018] Compared with the prior art, the utility model has the advantages that: by arranging the special-shaped gasket strip on the flat gasket strip, each first arc segment of the special-shaped gasket strip can better support the heat exchange tube, and when the heat exchange tube expands due to heat, the first arc segment can be deformed to provide expansion space for the heat exchange tube. And because the bottom of the outer peripheral surface of each first arc segment is supported on the first surface of the flat gasket strip and constrained together with the flat gasket strip, a hollow structure is formed between two adjacent first arc segments and the flat gasket strip, and the hollow structure can reduce the weight of the supporting structure while facilitating the passage of the heat exchange fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A practical state diagram of an embodiment of the utility model

[0020] Figure 2 for Figure 1 A magnified view of the local structure;

[0021] Figure 3 for Figure 2 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 3 As shown, a preferred embodiment of a support structure of a heat exchange tube of the utility model is shown, and the support structure includes a flat pad 610 and a special-shaped pad 620 .

[0024] The flat pad strip 610 has a first surface 611 , and the first surface 611 is oriented upward, and the length direction of the flat pad strip 610 is a first direction extending leftward and rightward.

[0025] The special-shaped gasket strip 620 extends along the first direction and has a plurality of first arc segments 621 arranged in sequence in the first direction. Each first arc segment 621 is concave as a whole, and the inner circumference of each first arc segment 621 forms a concave cavity 623 with an opening on the top that matches the outer circumferential wall of the heat exchange tube 200. The bottom of the concave cavity 623 is a plane for the outer circumferential wall of the heat exchange tube 200 to support it. The central angle corresponding to each first arc segment 621 is greater than 180° (about 200° in this embodiment), so that the heat exchange tube 200 can be inserted into the concave cavity 623 through the opening at the top of the first arc segment 621. For details, please refer to Figure 2 , 3 ,and Figure 3 The arched end of the right side wall of the heat exchange tube 200 located in the concave cavity 623 is located on the right side of the upper end of the inner circumference of the first arc segment 621, and the distance a between the two in the first direction is 0.15-0.2 mm. Thus, the upper end of the first arc segment 621 can limit the heat exchange tube and prevent the heat exchange tube from detaching from the special-shaped gasket.

[0026] The bottom of the outer peripheral surface of each first arc segment 621 is a plane, and is supported on the first surface 611 of the flat pad strip 610 in a posture of being in contact with the first surface 611, and is connected to the first surface 611 by welding. The joints of adjacent first arc segments 621 form a convex portion 624 protruding upward.

[0027] In this embodiment, adjacent first arc segments 621 are connected by second arc segments 622 that arch upward (the second arc segments 622 and the convex portion 624 are formed). The radius of the second arc segment 622 is smaller than the radius of the first arc segment 621. The second arc segment 622 is smoothly connected to the first arc segment 621. Specifically, the first arc segment 621 and the second arc segment 622 are formed by bending the cushion strip.

[0028] In this way, each first arc segment 621 can better support the heat exchange tube, and when the heat exchange tube expands due to heat, the first arc segment 621 can be deformed to provide expansion space for the heat exchange tube. And because the bottom of the outer peripheral surface of each first arc segment 621 is supported on the first surface 611 of the flat pad bar 610 and is constrained together with the flat pad bar 610, a hollow structure 630 is formed between two adjacent first arc segments 621 and the flat pad bar 610. The hollow structure 630 can reduce the weight of the supporting structure and facilitate the passage of the heat exchange fluid.

Claims

1. A support structure for a heat exchange tube, comprising: The flat gasket strip (610) has a first surface (611), and the first surface (611) is oriented upward, and the length direction of the flat gasket strip (610) is denoted as a first direction; Features Also included are: The special-shaped gasket strip (620) extending along the first direction has a plurality of first arc segments (621) arranged in sequence along the first direction, each first arc segment (621) is concave as a whole, and the inner circumferential surface of each first arc segment (621) forms a concave cavity (623) with an opening at the top that matches the outer circumferential wall of the heat exchange tube (200), the bottom of the outer circumferential surface of each first arc segment (621) is supported on the first surface (611) of the flat gasket strip (610) and is constrained together with the flat gasket strip (610); the connection between adjacent first arc segments (621) forms a convex portion (624) protruding upward.

2. The support structure according to claim 1, characterized in that: Adjacent first arc segments (621) are connected via an upwardly arched second arc segment (622), and the convex portion (624) is formed by the upwardly arched second arc segment (622).

3. The support structure according to claim 2, characterized in that: The second circular arc segment (622) is smoothly connected to the first circular arc segment (621) as an integral whole.

4. The support structure according to claim 2, characterized in that: The radius of the second circular arc segment (622) is smaller than the radius of the first circular arc segment (621).

5. The support structure according to claim 1, characterized in that: The central angle corresponding to each first arc segment (621) is greater than 180°, so that the heat exchange tube (200) can be inserted into the concave cavity (623) through the opening at the top of the first arc segment (621).

6. The support structure according to any one of claims 1 to 5, characterized in that: The bottom of the outer circumferential surface of each first arc segment (621) is connected to the first surface (611) of the flat gasket strip (610) by welding.

7. The support structure according to any one of claims 1 to 5, characterized in that: The bottom of the outer peripheral surface of each first arc segment (621) is a plane and fits with the first surface (611) of the flat gasket strip (610).

8. The support structure according to any one of claims 1 to 5, characterized in that: The bottom of the inner circumferential surface of each first arc segment (621) is a plane so that the outer circumferential wall of the heat exchange tube (200) can be supported thereon.

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