A positioning assembly for heat exchange tubes

Abstract

This utility model relates to a positioning assembly for a heat exchanger tube, comprising: a pad strip having a first surface, with the first surface facing upwards, and the length direction of the first surface being the left-right direction; a clamp located above the pad strip, having a circumferential wall extending around an axis extending forward and backward, the inner wall surface of the circumferential wall defining a cavity matching the shape of the heat exchanger tube wall for insertion into the heat exchanger tube; the clamp further comprising: two legs, one on the left and one on the right, arranged on the lower side of the circumferential wall, the two legs extending outwards from the outer wall surface of the circumferential wall in a opposite orientation and supporting the first surface of the pad strip, the outer end of each leg being welded to the corresponding first surface of the pad strip. This positioning assembly can also effectively constrain and protect the heat exchanger tube.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically relating to a positioning component for a heat exchange tube. Background Technology

[0002] Existing spiral-wound tube heat exchangers mainly consist of heat exchange tubes spirally wound from the inside out on a central tube, with each layer of heat exchange tubes positioned by support structures such as gaskets and tube clamps. For example, the structure disclosed in Chinese Utility Model Patent Application No. 201621015355.9, entitled "A Heat Exchange Tube Gasket Structure" (Authorization Announcement No. CN205980909U), includes a gasket body. Multiple arc-shaped grooves adapted to the heat exchange tubes are spaced apart on the first side of the gasket body; a flexible first gasket is provided on the first side, and the first gasket adheres to the first side and the groove surfaces of the arc-shaped grooves.

[0003] For example, the Chinese utility model patent "Support Structure for Heat Exchanger Tube" (application number 202122904581.X, authorization announcement number CN216385246U) includes: a gasket and a clamp. The gasket has a first surface; the clamp has a recess for engaging with the outer peripheral wall of the heat exchanger tube, the recess being opposite to the first surface of the gasket. The clamp also has a first leg and a second leg located on both sides of its recess. The clamp is constrained to the first surface of the gasket by the first and second legs. The first leg and the second leg are respectively engaged with the gasket by a snap-fit ​​part and a snap-fit ​​groove.

[0004] Existing technology uses pipe clamps and gaskets to constrain heat exchange tubes. The fit between the pipe clamps and gaskets needs to be improved to better protect the heat exchange tubes. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a positioning component that can also better constrain and protect the heat exchange tube, based on the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a positioning assembly for a heat exchanger tube, comprising:

[0007] A pad strip has a first surface, and the first surface is denoted as facing upwards, with the length direction of the first surface being the left-right direction;

[0008] The clamp, located above the gasket, has a circumferential wall extending around an axis extending front and rear. The inner wall of the circumferential wall defines a cavity that matches the shape of the heat exchange tube wall for insertion into the heat exchange tube.

[0009] The pipe clamp is characterized by further having:

[0010] Two legs are arranged on the lower side of the peripheral wall, one on the left and one on the right, and the two legs extend outward from the outer wall surface of the peripheral wall in a opposite manner and are supported on the first surface of the pad strip. The outer end of each leg is welded to the first surface of the corresponding pad strip.

[0011] In use, the heat exchange tube to be positioned is inserted into the cavity of the tube clamp, and then the two legs are supported on the first surface of the gasket. The outer ends of each leg are welded to the first surface of the gasket, which is convenient for operation. The legs welded to the first surface of the gasket allow the tube clamp to be firmly fixed on the gasket, thereby better constraining and protecting the heat exchange tube.

[0012] Preferably, the peripheral wall has a closed-loop structure.

[0013] Furthermore, the first surface of the pad has a groove into which the bottom of the peripheral wall is inserted, and the welding positions of the two legs to the first surface are located on both sides of the groove. The fit between the groove and the two welding positions enables a three-point positioning clamp, allowing the clamp to be stably constrained on the pad.

[0014] Furthermore, both legs are arranged in a V-shape, tilting downwards from the inside out, with the outer ends of each leg supporting the first surface of the pad.

[0015] In the above-described design, preferably, the peripheral wall has an open-loop structure with a bottom opening, and the two support legs are located on either side of the bottom opening. During assembly, the heat exchange tube can be inserted axially into the cavity of the peripheral wall, or it can be inserted into the cavity of the peripheral wall through the bottom opening. After the two support legs are welded to the gasket, the bottom opening is covered by the gasket.

[0016] Furthermore, two legs extend horizontally outward from the edge of the bottom opening to form an Ω-shaped clamp together with the peripheral wall, and the lower surface of each leg is supported on the first surface of the pad strip.

[0017] In the above-mentioned solutions, preferably, the peripheral wall of the pipe clamp is integrally connected with the support leg.

[0018] Compared with the prior art, the advantages of this utility model are as follows: the pipe clamp is designed with a structure having a peripheral wall and two support legs. In use, the heat exchange tube to be positioned is inserted into the cavity of the peripheral wall of the pipe clamp, and then the two support legs are supported on the first surface of the gasket. The outer ends of each support leg are welded to the first surface of the gasket, which is convenient for operation. Moreover, the support legs welded to the first surface of the gasket can firmly fix the pipe clamp on the gasket, thereby better constraining and protecting the heat exchange tube. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0020] Figure 2This is a cross-sectional view of Embodiment 2 of the present invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Example 1:

[0023] like Figure 1 As shown, this is a preferred embodiment of a positioning assembly for a heat exchange tube according to the present invention. The positioning assembly includes a gasket 1 and a pipe clamp 2.

[0024] The pad strip 1 has a first surface 11, and the first surface 11 is denoted as facing upwards, and the length direction of the first surface 11 is the left-right direction;

[0025] The clamp 2 is located above the pad 1 and has a circumferential wall 20 extending around an axis extending front to back. The circumferential wall 20 has a closed-loop structure, and the inner wall surface of the circumferential wall 20 defines a cavity 200 that matches the shape of the heat exchange tube 3 for insertion into the heat exchange tube 3. The clamp 2 also has two legs 21, one on the left and one on the right, arranged on the lower side of the circumferential wall 20. The two legs 21 extend outward from the outer wall surface of the circumferential wall 20 in a opposite orientation and are supported on the first surface 11 of the pad 1. The outer end of each leg 21 is welded to the corresponding first surface 11 of the pad 1. In this embodiment, the circumferential wall 20 and the legs 21 of the clamp 2 are integrated. Both legs 21 are inclined downward from the inside to the outside in a V-shape arrangement. The outer end of each leg 21 is supported on the first surface 11 of the pad 1, and the support position is located inside the welding position 211 between the corresponding leg 21 and the first surface 11. Meanwhile, the first surface 11 of the pad strip 1 has a groove 110 into which the bottom of the peripheral wall 20 is inserted. The groove 110 is arc-shaped to match the shape of the bottom of the peripheral wall 21 and is located between the two legs 21.

[0026] When winding the heat exchanger tubes, a certain number of tube clamps 2 are fitted onto each heat exchanger tube. The support legs 21 of the tube clamps 2 are welded to the first surface 11 of the spacer strip 1. In practical applications, a certain gap can be left between the peripheral wall 20 of the tube clamp and the tube wall of the heat exchanger tube 3 to ensure the winding angle of the heat exchanger tube. At the same time, the peripheral wall 20 of the closed-loop structure of the tube clamp 2 can better wrap the heat exchanger tube 3, so as to firmly constrain the heat exchanger tube 3 to the spacer strip 1.

[0027] Example 2:

[0028] like Figure 2The diagram shows a preferred embodiment of a positioning assembly for a heat exchanger tube according to the present invention. This embodiment is basically the same as the first embodiment, except that in this embodiment, the peripheral wall 20 has an open-ring structure with a bottom opening 201, and two support legs 21 are located on both sides of the bottom opening 201. Specifically, the two support legs 21 extend horizontally outward from the edge of the bottom opening 201 to form an Ω-shaped clamp 2 together with the peripheral wall 20, and the lower surface of each support leg 21 is supported on the first surface 11 of the pad strip 1.

[0029] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A positioning assembly for a heat exchanger tube, comprising: The pad (1) has a first surface (11), and the first surface (11) is upward, and the length direction of the first surface (11) is the left-right direction; The clamp (2), located above the pad (1), has a circumferential wall (20) extending around an axis extending back and forth. The inner wall surface of the circumferential wall (20) defines a cavity (200) that matches the shape of the heat exchange tube (3) so that the heat exchange tube (3) can be inserted therein. Its features The clamp (2) also has: Two legs (21) are arranged on the lower side of the peripheral wall (20), one on the left and one on the right. The two legs (21) extend outward from the outer wall surface of the peripheral wall (20) in opposite directions and are supported on the first surface (11) of the pad (1). The outer end of each leg (21) is welded to the first surface (11) of the corresponding pad (1).

2. The positioning component according to claim 1, characterized in that: The peripheral wall (20) has a closed-loop structure.

3. The positioning component according to claim 2, characterized in that: The first surface (11) of the pad (1) has a groove (110) into which the bottom of the peripheral wall (20) is inserted, and the welding positions (211) of the two legs (21) to the first surface (11) are located on both sides of the groove (110).

4. The positioning component according to claim 2, characterized in that: Both legs (21) are arranged in a V-shape, tilting downwards from the inside to the outside, with the outer ends of each leg (21) supported on the first surface (11) of the pad (1).

5. The positioning component according to claim 1, characterized in that: The peripheral wall (20) has an open-ring structure with a bottom opening (201) and two legs (21) are located on both sides of the bottom opening (201).

6. The positioning component according to claim 5, characterized in that: Two legs (21) extend horizontally outward from the edge of the bottom opening (201) and together with the peripheral wall (20) form an Ω-shaped clamp (2), with the lower surface of each leg (21) supported on the first surface (11) of the pad (1).

7. The positioning component according to any one of claims 1 to 6, characterized in that: The peripheral wall (20) of the clamp (2) is connected to the support leg (21) as a whole.

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