A support structure for heat exchange tubes

Abstract

A support structure for a heat exchange tube includes: a gasket; a pipe clamp in an inverted U shape, having a first support section extending upward, a second support section arranged side by side with the first support section, and a transition section connecting the two, the first support section, the second support section, and the transition section jointly define a concave cavity with an opening facing downward and opposite to a first surface, so that a first heat exchange tube can be inserted into the concave cavity through the opening, and a first slot and a second slot are respectively provided on the first surface of the gasket corresponding to the first support section and the second support section; the lower end of the first support section is inserted into the first slot, and the side surface of the lower end of the first support section is connected to the corresponding side wall of the first slot by welding; the lower end of the second support section is inserted into the second slot, and the side surface of the lower end of the second support section is connected to the corresponding side wall of the second slot by welding. Compared with the prior art, the pipe clamp of the utility model can be stably constrained on the gasket.

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 the central tube from the inside to the outside, and each layer of heat exchange tubes is positioned by support structures such as gaskets and pipe clamps. 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, and a plurality of arc-shaped grooves adapted to the heat exchange tubes are arranged on the first side of the gasket body at intervals; a flexible first gasket is arranged on the first side, and the first gasket is attached to the first side and the groove surface of the arc-shaped groove.

[0003] Another example is the utility model patent "Support structure of heat exchange tube" with patent number 202122904581.X (authorization announcement number CN216385246U), which includes: a gasket and a pipe clamp, the gasket has a first surface; the pipe clamp has a recess for cooperating with the outer peripheral wall of the heat exchange tube, the recess is opposite to the first surface of the gasket, and the pipe clamp also has a first support leg and a second support leg located on both sides of the recess, and the pipe clamp is constrained on the first surface of the gasket by the first and second support legs; the first support leg and the second support leg are respectively clamped on the gasket by the clamping portion and the clamping groove.

[0004] The prior art uses pipe clamps and gaskets to restrain the heat exchange tubes. However, if the heat exchange tubes expand due to fluctuations in operating conditions (such as temperature changes, operating pressure changes, and operating load changes), the pipe clamps are likely to lock the heat exchange tubes. At the same time, the pipe clamps are likely to accidentally break away from the gaskets and release the constraints on the heat exchange tubes. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a support structure for a heat exchange tube in view of the current status of the prior art, so that the tube clamp can be stably constrained on the pad.

[0006] The second technical problem to be solved by the utility model is to provide a support structure for a heat exchange tube to prevent the heat exchange tube from being locked by a tube clamp after expanding due to fluctuations in working conditions.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a support structure of a heat exchange tube, comprising:

[0008] The cushion strip has a first surface, and the first surface is oriented upward;

[0009] The pipe clamp is in an inverted U shape, and comprises a first supporting section extending upward, a second supporting section arranged side by side with the first supporting section, and a transition section connecting the two, wherein the first supporting section, the second supporting section, and the transition section jointly define a concave cavity with an opening facing downward and opposite to the first surface, so that the first heat exchange tube can be inserted into the concave cavity through the opening;

[0010] Features:

[0011] A first slot and a second slot are respectively formed on the first surface of the cushion strip at positions corresponding to the first supporting section and the second supporting section;

[0012] The lower end of the first support section is inserted into the first slot, and the side surface of the lower end of the first support section is connected to the corresponding side wall of the first slot by welding;

[0013] The lower end of the second supporting section is inserted into the second slot, and the side surface of the lower end of the second supporting section is connected to the corresponding side wall of the second slot by welding.

[0014] When in use, the lower ends of the first support section and the second support section of the pipe clamp are respectively inserted into the corresponding first slot and the second slot, and then the side of the first support section is welded to the side wall of the first slot, and the side of the second support section is welded to the side wall of the second slot, so that the pipe clamp can be firmly restrained on the cushion strip. The support sections inserted in their respective slots are convenient for welding operations.

[0015] In order to make the pipe clamp more firmly restrained on the gasket strip, preferably, the pipe clamp is an elastic member that can be elastically deformed, and the lower end of the first supporting section and the lower end of the second supporting section of the pipe clamp always have a tendency to move away from each other, so that the outer side surface of the lower end of the first supporting section and the outer side surface of the lower end of the second supporting section are respectively attached to the side walls of the corresponding first slot and the second slot, and the attached parts are connected by welding. The above structure is convenient for welding and can also make the welding part more firm.

[0016] Preferably, the lower ends of the first supporting section and the second supporting section of the pipe clamp are respectively provided with clamping feet, and the two clamping feet extend outward in opposite directions;

[0017] The first slot and the second slot both have an insertion section extending downward and a clamping section extending outward from the lower end of the insertion section. The clamping pins on the first and second support sections are inserted into the corresponding insertion sections and extend into the corresponding clamping sections under the elastic force of the pipe clamp. The setting of the clamping section can constrain the pipe clamp in the up and down directions.

[0018] To further solve the above-mentioned second technical problem, preferably, the inner circumferential surface of the transition section of the pipe clamp has a first inner arc surface, a second inner arc surface and a third inner arc surface arranged in sequence along the circumferential direction, the second inner arc surface faces the opening, and is used to cooperate with the outer circumferential wall of the first heat exchange tube, the first inner arc surface and the third inner arc surface are both concave outward, and the intersection of the first inner arc surface and the second inner arc surface forms a first convex portion that protrudes inward and is used to be opposite to the outer circumferential wall of the first heat exchange tube, and the intersection of the third inner arc surface and the second inner arc surface forms a second convex portion that protrudes inward and is used to be opposite to the outer circumferential wall of the first heat exchange tube.

[0019] In this way, when the heat exchange tube expands due to fluctuations in operating conditions, the first inner curved surface and the third inner curved surface can produce elastic deformation under the action of the heat exchange tube, providing expansion space for the heat exchange tube to avoid the heat exchange tube being locked by the pipe clamp after expansion. The second inner curved surface of the pipe clamp cooperates with the outer peripheral wall of the heat exchange tube to better constrain the heat exchange tube.

[0020] Preferably, the axis extending up and down and passing through the center of the circle corresponding to the second inner arc surface is referred to as the first axis, and the first inner arc surface and the third inner arc surface are symmetrically arranged around the first axis.

[0021] Preferably, the outer peripheral surface of the transition section of the pipe clamp has a first outer curved surface, a second outer curved surface and a third outer curved surface arranged in sequence along the circumferential direction, the second outer curved surface is arranged corresponding to the second inner curved surface and is concave, so that the outer peripheral wall of the second heat exchange tube is supported thereon, the first outer curved surface is arranged corresponding to the first inner curved surface and protrudes outward, and the third outer curved surface is arranged corresponding to the third inner curved surface and protrudes outward. In this way, the pipe clamp of the utility model can limit two adjacent heat exchange tubes at the same time. At the same time, the shapes of the outer curved surface and the inner curved surface are more conducive to the elastic deformation of the pipe clamp when it is subjected to the force of the heat exchange tube due to thermal expansion.

[0022] Preferably, the first outer arc surface and the first inner arc surface are arranged concentrically; the third outer arc surface and the third inner arc surface are arranged concentrically.

[0023] Preferably, adjacent outer arc surfaces and adjacent inner arc surfaces are connected by respective smooth transition surfaces.

[0024] Compared with the prior art, the utility model has the advantages that: by opening the first slot and the second slot on the cushion strip, when in use, the lower ends of the first support section and the second support section of the pipe clamp are respectively inserted into the first slot and the second slot corresponding to each other, and then the side of the first support section is welded to the side wall of the first slot, and the side of the second support section is welded to the side wall of the second slot, so that the pipe clamp can be firmly restrained on the cushion strip. And the support sections inserted in their respective slots are convenient for welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic diagram of the structure of the first embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the pipe clamp in the second embodiment of the utility model;

[0027] Figure 3 This is a diagram showing the use status of the pipe clamp in the second embodiment of the utility model;

[0028] Figure 4 This is another usage state diagram of the pipe clamp in the second embodiment of the utility model. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Embodiment 1:

[0031] like Figure 1 As shown in FIG. 1 , a preferred embodiment of a support structure for a heat exchange tube of the utility model is shown. The support structure includes a gasket 500 and a tube clamp 400 .

[0032] The pipe clamp 400 is in an inverted U shape, and has a first support section 41 extending upward, a second support section 43 arranged side by side with the first support section 41, and a transition section 42 connecting the two. The transition section 42 is semicircular. The first support section 41, the second support section 43, and the transition section 42 jointly define a concave cavity 420 with an opening 410 facing downward, so that the first heat exchange tube 201 can be inserted into the concave cavity 420 through the opening 410. The lower ends of the first support section 41 and the second support section 43 of the pipe clamp 400 are respectively provided with clamping feet 44, and the two clamping feet 44 extend outward in a posture of diverging from each other. At the same time, the pipe clamp 400 is an elastic member that can be elastically deformed, and the lower ends of the first support section 41 and the lower ends of the second support section 43 of the pipe clamp 400 always have a tendency to move away from each other.

[0033] The pad strip 500 has an upward first surface, and a first slot 510 and a second slot 520 are respectively provided at positions corresponding to the first supporting section 41 and the second supporting section 43 on the first surface, and both the first slot 510 and the second slot 520 have an insertion section 5a extending downward and a clamping section 5b extending outward from the lower end of the insertion section 5a. The clamping feet 44 on the first and second supporting sections are inserted into the corresponding insertion sections 5a, and extend into the corresponding clamping sections 5b under the elastic force of the pipe clamp 400. At this time, the outer side surface of the lower end of the first supporting section 41 and the outer side surface of the lower end of the second supporting section 43 are respectively attached to the side walls of the corresponding insertion sections 5a, and the attached parts are connected by welding. The welding positions are shown in FIG. Figure 1 At point A.

[0034] After the first heat exchange tube 201 is wound on the gasket 500, the two clamping feet 44 on the tube clamp 400 are respectively inserted into the first slot 510 and the second slot 520 corresponding to the gasket 500, and then Figure 1 The pipe clamp 400 and the gasket 500 are welded at A, so that the pipe clamp 400 can be firmly restrained on the gasket 500.

[0035] Embodiment 2:

[0036] like Figures 2 to 4 As shown, it is a preferred embodiment 2 of a support structure of a heat exchange tube of the utility model. This embodiment is basically the same as the first embodiment, except that the shape of the transition section 42 of the pipe clamp 400 in this embodiment is different. Specifically, in this embodiment, the inner circumferential surface of the transition section 42 of the pipe clamp 400 has a first inner arc surface 421, a second inner arc surface 422 and a third inner arc surface 423 arranged in sequence along the circumferential direction. The second inner arc surface 422 faces the opening 410 and is used to cooperate with the outer circumferential wall of the first heat exchange tube 201. The first inner arc surface 421 and the third inner arc surface 423 are both concave outward, and the intersection of the first inner arc surface 421 and the second inner arc surface 422 forms a first convex portion 424 that protrudes inward and is used to be opposite to the outer circumferential wall of the first heat exchange tube 201, and the intersection of the third inner arc surface 423 and the second inner arc surface 422 forms a second convex portion 425 that protrudes inward and is used to be opposite to the outer circumferential wall of the first heat exchange tube 201. The axis extending up and down and passing through the center of the circle corresponding to the second inner arc surface 422 is the first axis 430, and the first inner arc surface 421 and the third inner arc surface 423 are arranged symmetrically with the first axis 430 as the center. At the same time, the outer peripheral surface of the transition section 42 of the pipe clamp 400 has a first outer arc surface 441, a second outer arc surface 442 and a third outer arc surface 443 arranged in sequence along the circumferential direction, the second outer arc surface 442 is arranged corresponding to the second inner arc surface 422 and is concave, so that the outer peripheral wall of the second heat exchange tube 202 can be supported thereon, the first outer arc surface 441 is arranged corresponding to the first inner arc surface 421 and protrudes outward, and the first outer arc surface 441 and the first inner arc surface 421 are arranged concentrically; the third outer arc surface 443 is arranged corresponding to the third inner arc surface 423 and protrudes outward, and the third outer arc surface 443 and the third inner arc surface 423 are arranged concentrically. At the same time, in this embodiment, adjacent outer arc surfaces and adjacent inner arc surfaces are connected by respective smooth transition surfaces 440 to avoid damaging the heat exchange tubes.

[0037] When the first heat exchange tube expands due to fluctuations in operating conditions, the first inner arc surface 421 and the third inner arc surface 423 can produce elastic deformation under the action of the first heat exchange tube, providing expansion space for the first heat exchange tube to avoid the first heat exchange tube being locked by the pipe clamp 400 after expansion. The second inner arc surface 422 of the pipe clamp 400 cooperates with the outer peripheral wall of the first heat exchange tube to better constrain the first heat exchange tube. At the same time, the second outer arc surface 442 of the pipe clamp 400 can also provide support for the outer peripheral wall of the second heat exchange tube 202. That is, the pipe clamp of this embodiment can constrain two adjacent heat exchange tubes at the same time. For details, please refer to Figure 4 .

Claims

1. A support structure for a heat exchange tube, comprising: The cushion strip (500) has a first surface, and the first surface is oriented upward; The pipe clamp (400) is in an inverted U-shape and comprises a first supporting section (41) extending upward, a second supporting section (43) arranged side by side with the first supporting section (41), and a transition section (42) connecting the two, wherein the first supporting section (41), the second supporting section (43), and the transition section (42) jointly define a concave cavity (420) with an opening (410) facing downward and opposite to the first surface, so that the first heat exchange tube (201) can be inserted into the concave cavity (420) through the opening (410); Features: A first slot (510) and a second slot (520) are respectively provided on the first surface of the cushion strip (500) at positions corresponding to the first supporting section (41) and the second supporting section (43); The lower end of the first supporting section (41) is inserted into the first slot (510), and the side surface of the lower end of the first supporting section (41) is connected to the side wall of the corresponding first slot (510) by welding; The lower end of the second support section (43) is inserted into the second slot (520), and the side surface of the lower end of the second support section (43) is connected to the side wall of the corresponding second slot (520) by welding.

2. The support structure according to claim 1, characterized in that: The pipe clamp (400) is an elastic member capable of elastic deformation, and the lower end of the first supporting section (41) and the lower end of the second supporting section (43) of the pipe clamp (400) always tend to move away from each other, so that the outer side surface of the lower end of the first supporting section (41) and the outer side surface of the lower end of the second supporting section (43) are respectively attached to the side walls of the corresponding first slot (510) and the second slot (520), and the attached parts are connected by welding.

3. The support structure according to claim 2, characterized in that: The lower ends of the first supporting section (41) and the second supporting section (43) of the pipe clamp (400) are respectively provided with clamping feet (44), and the two clamping feet (44) extend outward in opposite directions; The first slot (510) and the second slot (520) both have an insertion section (5a) extending downward and a clamping section (5b) extending outward from the lower end of the insertion section (5a); the clamping feet (44) on the first and second support sections are inserted into the corresponding insertion sections (5a) and extend into the corresponding clamping sections (5b) under the action of the elastic force of the pipe clamp (400).

4. The support structure according to any one of claims 1 to 3, characterized in that: The inner circumferential surface of the transition section (42) of the pipe clamp (400) comprises a first inner arc surface (421), a second inner arc surface (422) and a third inner arc surface (423) which are arranged in sequence along the circumferential direction; the second inner arc surface (422) faces the opening (410) and is used to cooperate with the outer circumferential wall of the first heat exchange tube (201); the first inner arc surface (421) and the third inner arc surface (423) are both concave outwardly; and a first convex portion (424) which protrudes inwardly and is used to be opposite to the outer circumferential wall of the first heat exchange tube (201) is formed at the intersection of the first inner arc surface (421) and the second inner arc surface (422); and a second convex portion (425) which protrudes inwardly and is used to be opposite to the outer circumferential wall of the first heat exchange tube (201) is formed at the intersection of the third inner arc surface (423) and the second inner arc surface (422).

5. The support structure according to claim 4, characterized in that: The axis extending up and down and passing through the center of the circle corresponding to the second inner arc surface (422) is referred to as the first axis (430), and the first inner arc surface (421) and the third inner arc surface (423) are symmetrically arranged with the first axis (430) as the center.

6. The support structure according to claim 4, characterized in that: The outer peripheral surface of the transition section (42) of the pipe clamp (400) comprises a first outer curved surface (441), a second outer curved surface (442) and a third outer curved surface (443) which are arranged in sequence along the circumferential direction; the second outer curved surface (442) is arranged corresponding to the second inner curved surface (422) and is recessed so that the outer peripheral wall of the second heat exchange tube (202) can be supported thereon; the first outer curved surface (441) is arranged corresponding to the first inner curved surface (421) and protrudes outward; and the third outer curved surface (443) is arranged corresponding to the third inner curved surface (423) and protrudes outward.

7. The support structure according to claim 6, characterized in that: The first outer arc surface (441) and the first inner arc surface (421) are arranged cocentrically; the third outer arc surface (443) and the third inner arc surface (423) are arranged cocentrically.

8. The support structure according to claim 7, characterized in that: Adjacent outer arc surfaces and adjacent inner arc surfaces are connected via respective smooth transition surfaces (440).

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