Heat exchanger gasket and heat exchanger

Abstract

The utility model discloses a heat exchanger gasket strip and heat exchanger belong to heat exchanger technical field, a heat exchanger gasket strip, including base portion and set up on the base portion be used for positioning heat exchange pipe's check tooth, the check tooth includes the connecting portion, the distortion portion, the lamination portion that follow each other, the connecting portion is fixedly connected with the base portion, the distortion portion is the plate structure and is twisted into around the vertical axis of itself, the width direction of lamination portion is identical with the axial direction of heat exchange pipe. The utility model check tooth includes the distortion portion, and the distortion portion is the plate structure and is twisted into around the vertical axis of itself, when the vibration and displacement of heat exchange pipe work process occur, the distortion portion still has partial elastic deformation ability, offsets this part vibration and removes, namely the distortion portion occurs elastic deformation and further adapts the vibration of heat exchange pipe to reduce the probability of extrusion wear of the contact site of heat exchange pipe vibration and gasket strip, thereby promotes the service life of heat exchange pipe and gasket strip.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically relating to a heat exchanger gasket and a heat exchanger. Background Technology

[0002] The mainstream styles of gaskets used in traditional coiled tube heat exchangers are mainly machined styles and sheet metal bending styles. Machined gaskets include... Figure 1 As shown, to ensure the contact area between the heat exchanger tube clamp 02 and the heat exchanger tube 03 on the base plate 01, the width of the heat exchanger tube clamp 02 is consistent with the axial direction of the heat exchanger tube 03. During processing, the area between adjacent heat exchanger tube clamps 02 is milled away to achieve an integrated fixing mechanism between the heat exchanger tube clamp 02 and the base plate 01; the sheet metal bending style pad is as follows. Figure 2 As shown, the thickness direction of the heat exchanger tube clamp 02 is consistent with the axial direction of the heat exchanger tube 03, and the contact area between the heat exchanger tube clamp 02 and the heat exchanger tube 03 is small.

[0003] In both of the above-mentioned heat exchanger gaskets, the heat exchanger tube clamp 02 used to position the heat exchanger tube 03 is an integral plate structure. When the vibration generated by the heat exchanger tube 03 during operation is transmitted to the gasket, the existing gasket structure cannot adapt to the vibration of the heat exchanger tube 03, which causes the contact part between the heat exchanger tube 03 and the gasket to be squeezed and worn when vibrating, thereby reducing the service life of the heat exchanger tube 03 and the gasket. Utility Model Content

[0004] To address the problem that existing heat exchanger gaskets cannot adapt to heat exchanger tube vibration, this utility model provides a heat exchanger gasket.

[0005] A heat exchanger gasket includes a base and positioning teeth disposed on the base for positioning a heat exchange tube. The positioning teeth include a connecting part, a twisting part, and a fitting part connected in sequence. The connecting part is fixedly connected to the base. The twisting part is a plate-shaped structure twisted around its own vertical axis. The width direction of the fitting part is consistent with the axial direction of the heat exchange tube.

[0006] Preferably, the limiting tooth is formed by twisting a plate-shaped substrate around its own vertical central axis, and the width direction of the plate-shaped substrate is consistent with the length direction of the base.

[0007] Preferably, the width of the pre-twisted portion in the plate-shaped substrate is smaller than the width of the non-twisted portion, and the connection between the pre-twisted portion and the non-twisted portion in the plate-shaped substrate is smoothly transitioned.

[0008] Preferably, a through hole is provided at the center of the pre-twisted portion of the plate-shaped substrate.

[0009] Preferably, the height of the limiting tooth above the base is 1 / 2 to 2 / 3 of the diameter of the heat exchange tube.

[0010] Preferably, a plurality of limiting teeth are evenly arranged along the length direction on one side of the base, and a locking position for positioning the heat exchange tube is formed between adjacent limiting teeth.

[0011] Preferably, a plurality of positioning groups are evenly arranged along the length direction on one side of the base, each positioning group including two limiting teeth, and a locking position for positioning the heat exchange tube is formed between the two limiting teeth in each positioning group.

[0012] Preferably, a plurality of positioning groups are evenly arranged along the length direction on the base, each positioning group including two limiting teeth located on different sides of the base, and a locking position for positioning the heat exchange tube is formed between the two limiting teeth in each positioning group.

[0013] This utility model also provides a heat exchanger.

[0014] A heat exchanger, including heat exchanger gaskets.

[0015] The beneficial effects of this utility model are:

[0016] (1) The limiting tooth of this utility model includes a twisted part, which is formed by twisting a plate-like structure around its own vertical axis. After the plate-like structure twists around its own vertical central axis to form the twisted part, the shear stress exceeds the yield strength, and the twist undergoes an elastic-plastic deformation stage. After the load is removed, it recovers part of its shape, that is, the twisted part still has some elastic deformation capacity. When the heat exchange tube vibrates and displaces during operation, the twisted part deforms to offset this part of the vibration and movement, that is, the twisted part undergoes elastic deformation to adapt to the vibration of the heat exchange tube, thereby reducing the probability of squeezing and wear at the contact part between the heat exchange tube and the gasket when the heat exchange tube vibrates, thereby improving the service life of the heat exchange tube and the gasket.

[0017] (2) The present invention provides a through hole at the center of the pre-twisted part of the plate substrate. The through hole serves two purposes: first, it facilitates twisting, reduces twisting resistance, and allows for better control of the twisting angle; second, it reduces the impact of twisting on the connecting part and the bonding part, and reduces the impact of the deformation of the bonding part on the contact of the heat exchange tube.

[0018] (3) The limiting teeth in this utility model have multiple combination methods on the base to meet the installation requirements of heat exchange tubes with different tube gaps. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0020] Figure 1 This is a schematic diagram of the structure of a machined style pad in the background art;

[0021] Figure 2This is a schematic diagram of the structure of the sheet metal bending style pad in the background technology;

[0022] Figure 3 This is a schematic diagram of the structure of the heat exchanger gasket of this utility model;

[0023] Figure 4 This is a schematic diagram of the plate-shaped substrate in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the plate-shaped substrate with through holes in this utility model. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the structure of the plate-shaped substrate with through holes in this utility model. Figure 2 ;

[0026] Figure 7 This is a schematic diagram of the heat exchanger gasket in Embodiment 2 of this utility model;

[0027] Figure 8 This is a schematic diagram of the heat exchanger gasket in Embodiment 3 of this utility model;

[0028] Figure 9 This is a schematic diagram of the heat exchanger gasket in Embodiment 4 of this utility model;

[0029] in:

[0030] 01. Base plate; 02. Heat exchanger tube clamp; 03. Heat exchanger tube;

[0031] 1. Base; 2. Connecting part; 3. Twisted part; 4. Adhesive part; 5. Plate-shaped substrate; 51. Through hole; 6. Tube gap. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] like Figure 3 As shown, a heat exchanger gasket includes a base 1 and positioning teeth disposed on the base 1 for positioning a heat exchange tube 03. The positioning teeth include a connecting part 2, a twisting part 3, and a fitting part 4 connected in sequence. The connecting part 2 is fixedly connected to the base 1 and can be integrally formed or welded. The twisting part 3 is a plate-shaped structure twisted around its own vertical axis. The width direction of the fitting part 4 is consistent with the axial direction of the heat exchange tube 03 to ensure a large contact area between the fitting part 4 and the heat exchange tube 03. The top surface and side surface of the fitting part 4 are rounded.

[0035] After the plate-like structure twists around its vertical central axis to form the tortuous part 3, the shear stress exceeds the yield strength, and the tortuosity undergoes an elastoplastic deformation stage. After the load is removed, it partially recovers its shape, meaning the tortuous part 3 still retains some elastic deformation capacity. When the heat exchange tube 03 vibrates and displaces during operation, the tortuous part 3 deforms to offset this vibration and movement. That is, the tortuous part 3 undergoes elastic deformation to adapt to the vibration of the heat exchange tube 03, thereby reducing the probability of crushing and wear at the contact point between the heat exchange tube 03 and the gasket during vibration, thus improving the service life of the heat exchange tube 03 and the gasket.

[0036] Preferably, the limiting tooth is formed by twisting the plate-shaped substrate 5 around its own vertical central axis, and the width direction of the plate-shaped substrate 5 is consistent with the length direction of the base 1.

[0037] That is, in this application, the plate-shaped substrate 5 is twisted, the pre-twisted part forms a twisted part 3, the lower end of the twisted part 3 forms a connecting part 2 connected to the base part 1, and the upper end of the twisted part 3 is rotated by twisting to form a bonding part 4 that is in contact with the heat exchange tube 03.

[0038] Preferred, such as Figure 4 As shown, the width of the pre-twisted portion in the plate-shaped substrate 5 is smaller than the width of the non-twisted portion, and the connection between the pre-twisted portion and the non-twisted portion in the plate-shaped substrate 5 is smoothly transitioned.

[0039] Preferred, such as Figure 5 , Figure 6 As shown, a through hole 51 is provided at the center of the pre-twisted portion of the plate-shaped substrate 5.

[0040] The width of the pre-twisted part is smaller than the width of the non-twisted part or the through hole 51 is set in two ways: first, it facilitates twisting, reduces twisting resistance and allows for better control of the twisting angle; second, it reduces the impact of twisting on the connecting part 2 and the fitting part 4, and reduces the impact of deformation of the fitting part 4 on the contact of the heat exchange tube 03.

[0041] Preferably, the height H of the limiting tooth above the base 1 is 1 / 2 to 2 / 3 of the diameter of the heat exchange tube 03, so that the fitting part 4 can maintain a close fit with the heat exchange tube 03.

[0042] Example 2:

[0043] Based on Example 1, such as Figure 7 As shown, a number of limiting teeth are evenly arranged along the length direction on one side of the base 1, and a locking position is formed between adjacent limiting teeth to position the heat exchange tube 03.

[0044] When the gap 6 between the heat exchange tubes 03 is relatively small and is comparable to the thickness of the bonding part 4, a single-row single-tooth structure can be implemented. That is, a row of equally spaced limiting teeth is set on one side of the base 1, and the heat exchange tube 03 is positioned between adjacent limiting teeth.

[0045] Example 3:

[0046] Based on Example 1, such as Figure 8 As shown, several positioning groups are evenly arranged along the length direction on one side of the base 1. Each positioning group includes two limiting teeth, and a locking position for positioning the heat exchange tube 03 is formed between the two limiting teeth in each positioning group.

[0047] The spacing between adjacent positioning groups is required to meet the tube gap 6 requirement of composite heat exchange tube 03.

[0048] When the gap 6 between heat exchange tubes 03 is relatively large, a single-row double-tooth structure can be implemented. That is, a row of equally spaced positioning groups is set on one side of the base 1. Each positioning group includes two limiting teeth, and the two limiting teeth in the positioning group form a positioning function for one heat exchange tube 03.

[0049] Example 4:

[0050] Based on Example 1, such as Figure 9 As shown, several positioning groups are evenly arranged along the length direction on the base 1. Each positioning group includes two limiting teeth located on different sides of the base 1. A locking position for positioning the heat exchange tube 03 is formed between the two limiting teeth in each positioning group.

[0051] When the gap 6 between heat exchange tubes 03 is relatively large but a single row of double teeth will cause interference and make it difficult to implement twisting, a double row of double teeth structure can be implemented. That is, the two limiting teeth in the positioning group are distributed on both sides of the base 1 to expand the twisting space and facilitate the twisting implementation. The two limiting teeth in the positioning group form a positioning function for one heat exchange tube 03.

[0052] Example 5:

[0053] A heat exchanger includes the heat exchanger gasket as described in Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4.

[0054] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, they are not intended to limit the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the protection scope of the present utility model.

Claims

1. A gasket for a heat exchanger, characterized in that It includes a base (1) and a positioning tooth provided on the base (1) for positioning the heat exchange tube (03). The positioning tooth includes a connecting part (2), a twisting part (3), and a fitting part (4) connected in sequence. The connecting part (2) is fixedly connected to the base (1). The twisting part (3) is a plate-shaped structure twisted around its own vertical axis. The width direction of the fitting part (4) is consistent with the axial direction of the heat exchange tube (03).

2. The heat exchanger mat strip of claim 1, wherein The limiting teeth are formed by twisting the plate-shaped substrate (5) around its own vertical central axis, and the width direction of the plate-shaped substrate (5) is consistent with the length direction of the base (1).

3. The heat exchanger mat strip of claim 2, wherein The width of the pre-twisted portion in the plate-shaped substrate (5) is smaller than the width of the non-twisted portion, and the connection between the pre-twisted portion and the non-twisted portion in the plate-shaped substrate (5) is smoothly transitioned.

4. The heat exchanger mat strip of claim 2, wherein A through hole (51) is provided at the center of the pre-twisted portion of the plate-shaped substrate (5).

5. The heat exchanger mat strip of claim 1, wherein The height of the limiting tooth above the base is 1 / 2 to 2 / 3 of the diameter of the heat exchange tube (03).

6. The heat exchanger mat strip of claim 1, wherein A number of limiting teeth are evenly arranged along the length direction on one side of the base (1), and a locking position is formed between adjacent limiting teeth to position the heat exchange tube (03).

7. The heat exchanger gasket as described in claim 1, characterized in that, Several positioning groups are evenly arranged along the length of one side of the base (1). Each positioning group includes two limiting teeth, and a locking position for positioning the heat exchange tube (03) is formed between the two limiting teeth in each positioning group.

8. The heat exchanger gasket as described in claim 1, characterized in that, Several positioning groups are evenly arranged along the length direction on the base (1). Each positioning group includes two limiting teeth located on different sides of the base (1). A locking position for positioning the heat exchange tube (03) is formed between the two limiting teeth in each positioning group.

9. A heat exchanger, characterized in that, Includes heat exchanger gaskets as described in any one of claims 1 to 8.

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