Heat exchange tube wall

Abstract

The utility model relates to a heat exchange tube wall which comprises an upper collecting box, a heat exchange tube bundle and a lower collecting box. The upper header and the lower header are arranged in parallel; the heat exchange tube bundles are arranged between the upper collecting box and the lower collecting box in an array mode, the upper ends and the lower ends of the heat exchange tube bundles are connected with the upper collecting box and the lower collecting box respectively, and sealing supporting structures are arranged at the upper ends and the lower ends of the heat exchange tube bundles and the connecting position of the upper collecting box and the lower collecting box. The heat exchanger has the advantages that the heat exchange tube bundle is restrained through the protective sleeve, the two ends of the heat exchange tube bundle are restrained through the sealing supporting structures, the heat exchange tube bundle is reinforced in an all-around mode, and the phenomenon that the wall of the heat exchange tube is bent and deformed easily is avoided.

Description

Technical Field

[0001] The utility model relates to heat exchange equipment, in particular to a heat exchange tube wall. Background Art

[0002] The heat exchange tube wall is one of the components of the heat exchanger, mainly used for heat exchange between two media. Its materials commonly include carbon steel, low alloy steel, stainless steel, copper, copper-nickel alloy, aluminum alloy, titanium, etc. The heat exchange tube wall is widely used in chemical, petroleum, electric power, shipbuilding, machinery and other fields. For example, the heat exchange tube wall is commonly found in equipment such as reactors and evaporators.

[0003] As the requirements for heat exchange properties of equipment become higher and higher, the thickness of the heat exchange tube wall is also becoming thinner and thinner, so as to accelerate the heat exchange between the liquid in the tube and the air outside the tube. However, after the thickness of the heat exchange tube wall is reduced, its own structural strength decreases, and because the tube body is affected by the change of temperature, the heat exchange tube wall is prone to bending and deformation.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model discloses a heat exchange tube wall.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A heat exchange tube wall comprises an upper header, a heat exchange tube bundle and a lower header; the upper header and the lower header are arranged in parallel; the heat exchange tube bundle is arranged in an array between the upper header and the lower header, the upper and lower ends of the heat exchange tube bundle are respectively connected to the upper header and the lower header, and the upper and lower ends of the heat exchange tube bundle and the connection between the upper header and the lower header are provided with sealing support structures; the heat exchange tube bundle is covered with a sheath tube.

[0008] Furthermore, a connecting plate is provided between adjacent sheath tubes.

[0009] Furthermore, at least three of the sheath tubes are connected into a group.

[0010] Furthermore, the sealing support structure includes sealing plate 1, sealing plate 2 and sealing plate 3, wherein sealing plate 1 is arranged in the space surrounded by adjacent heat exchange tube bundles located in the middle position, sealing plate 2 is arranged on both sides of sealing plate 1; and sealing plate 3 is arranged on the outside of sealing plate 2.

[0011] Furthermore, elbows are respectively provided at the upper and lower ends of the heat exchange tube bundle.

[0012] Furthermore, the bend at the upper end of the heat exchange tube bundle is welded and fixed to the upper header, and the bend is connected to the inner cavity of the upper header; the bend at the lower end of the heat exchange tube bundle is welded and fixed to the lower header, and the bend is connected to the inner cavity of the lower header.

[0013] Furthermore, a membrane wall is provided in the gaps between the arrays of heat exchange tube bundles.

[0014] Furthermore, the membrane wall is arranged in the gap between each row of heat exchange tube bundles along the width direction of the heat exchange tube bundle array.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The heat exchange tube bundle is restrained by a jacket tube, and both ends of the heat exchange tube bundle are restrained by a sealing support structure. The heat exchange tube bundle is reinforced in all directions to avoid bending and deformation of the heat exchange tube wall.

[0017] 2. Connect several sheath pipes into a whole through the connecting plate to play the role of mutual support and reinforcement.

[0018] 3. The upper and lower ends of the heat exchange tube bundle are connected to the upper and lower headers by elbows. When the elbow is subjected to horizontal loads, horizontal shear stress and vertical axial stress will be generated on the elbow. The magnitude of both stresses is much smaller than the horizontal load, which prevents the ends of the heat exchange tube bundle from bending easily.

[0019] 4. The membrane wall also plays a role in supporting the heat exchange tube bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front view structure of a heat exchange tube wall.

[0021] Figure 2 It is a structural schematic diagram of the upper end of the heat exchange tube wall.

[0022] Figure 3 It is a structural schematic diagram of the lower end of the heat exchange tube wall.

[0023] Figure 4 for Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0024] In the figure: 1. upper header; 2. heat exchange tube bundle; 21. elbow; 22. membrane wall; 3. sealing plate 1; 4. sealing plate 2; 5. sealing plate 3; 6. jacket tube; 61. connecting plate; 7. lower header. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0026] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0027] Example:

[0028] A heat exchange tube wall, such as Figure 1 As shown, it includes an upper header 1, a heat exchange tube bundle 2 and a lower header 7, the upper header 1 and the lower header 7 are arranged in parallel; the heat exchange tube bundle 2 is arranged in an array between the upper header 1 and the lower header 7, and the upper header 1, the heat exchange tube bundle 2 and the lower header 7 are connected. When working, the hot fluid flows through the upper header 1, the heat exchange tube bundle 2 and the lower header 7 in sequence, and the cold fluid flows through the gap of the heat exchange tube bundle 2 to complete the heat exchange.

[0029] Combination Figure 2 and Figure 3 As shown, the upper and lower ends of the heat exchange tube bundle 2 are respectively provided with elbows 21, and the upper and lower ends of the heat exchange tube bundle 2 are symmetrically arranged. The upper elbow 21 is welded and fixed to the upper header 1, and the two are connected. The lower elbow 21 is welded and fixed to the lower header 7, and the two are connected. The closer the elbow 21 is to the outer heat exchange tube bundle 2, the greater the bending degree. When affected by stress, the elbow 21 disperses the load in the horizontal and vertical directions to avoid deformation caused by excessive load in a single direction.

[0030] Combination Figure 2 and Figure 3As shown, the upper and lower ends of the heat exchange tube bundle 2 and the connection between the upper header 1 and the lower header 7 are provided with a sealing support structure, which includes a sealing plate 1 3, a sealing plate 2 4 and a sealing plate 3 5. The sealing plate 1 3 is arranged in the space surrounded by the adjacent heat exchange tube bundles 2 located in the middle position, and the sealing plate 2 4 is arranged on both sides of the sealing plate 1 3; the sealing plate 3 5 is arranged on the outside of the sealing plate 2 4. The sealing plate 1 3, the sealing plate 2 4 and the sealing plate 3 5 can seal the connection between the upper header 1 and the lower header 7, and can also play a role in supporting the end of the heat exchange tube bundle 2 to prevent the heat exchange tube bundle 2 from being easily deformed.

[0031] Combination Figure 2 and Figure 3 As shown, a membrane wall 22 is provided in the gaps of the array of heat exchange tube bundles 2. The membrane wall 22 is arranged in the gaps of each row of heat exchange tube bundles 2 along the width direction of the array of heat exchange tube bundles 2, which effectively increases the heat exchange area and enhances the heat transfer efficiency. The membrane wall 22 also supports the heat exchange tube bundle 2. At the same time, since the membrane wall 22 is not easy to accumulate dust, the ventilation resistance is reduced, and the heat transfer efficiency is further improved.

[0032] Combination Figure 1 of Figure 4 As shown, the heat exchange tube bundle 2 is provided with a jacket tube 6, which is arranged in the middle of the heat exchange tube bundle 2. The jacket tube 6 constrains the heat exchange tube bundle 2 from the outside to prevent the heat exchange tube from deforming from the middle position. A connecting plate 61 is arranged between adjacent jacket tubes 6, and at least three jacket tubes 6 are connected into a group. Multiple connecting plates 61 are connected into one body, so that multiple jacket tubes 6 are constrained to each other, thereby improving stability.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat exchange tube wall, characterized in that: It includes an upper header, a heat exchange tube bundle and a lower header; The upper header and the lower header are arranged in parallel; The heat exchange tube bundle is arranged in an array between the upper header and the lower header, the upper and lower ends of the heat exchange tube bundle are connected to the upper header and the lower header respectively, and a sealing support structure is provided at the upper and lower ends of the heat exchange tube bundle and the connection between the upper header and the lower header; The heat exchange tube bundle is covered with a jacket tube.

2. The heat exchange tube wall according to claim 1, characterized in that: A connecting plate is arranged between adjacent sheath pipes.

3. The heat exchange tube wall according to claim 2, characterized in that: At least three of the sheath tubes are connected into one group.

4. The heat exchange tube wall according to claim 1, characterized in that: The sealing support structure includes sealing plate 1, sealing plate 2 and sealing plate 3. The sealing plate 1 is arranged in the space surrounded by adjacent heat exchange tube bundles located in the middle position, the sealing plate 2 is located on both sides of the sealing plate 1; the sealing plate 3 is arranged on the outside of the sealing plate 2.

5. The heat exchange tube wall according to claim 1, characterized in that: Bend pipes are respectively arranged at the upper and lower ends of the heat exchange tube bundle.

6. The heat exchange tube wall according to claim 5, characterized in that: The bend at the upper end of the heat exchange tube bundle is welded and fixed to the upper header, and the bend is communicated with the inner cavity of the upper header; the bend at the lower end of the heat exchange tube bundle is welded and fixed to the lower header, and the bend is communicated with the inner cavity of the lower header.

7. The heat exchange tube wall according to claim 1, characterized in that: Membrane walls are arranged in the gaps between the arrays of heat exchange tube bundles.

8. The heat exchange tube wall according to claim 7, characterized in that: The membrane wall is arranged in the gap between each row of heat exchange tube bundles along the width direction of the heat exchange tube bundle array.

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