Shell-and-tube heat exchanger

Abstract

The invention provides a shell-and-tube heat exchanger which comprises a shell, a plurality of heat exchange tubes and at least one supporting device, and a shell containing cavity is defined by the shell; the heat exchange tube is arranged in a containing cavity of the shell, the supporting device is arranged in the containing cavity of the shell and is configured to support the heat exchange tube, the heat exchange tube penetrates through the supporting device, the supporting device comprises a supporting plate, a middle plate and a pressing part, the supporting plate is fixed in the containing cavity of the shell, and the middle plate is arranged on the supporting plate. The middle plate, the supporting plate and the pressing part are arranged side by side, the supporting plate is provided with a supporting plate hole, the middle plate is provided with a middle plate hole, and the heat exchange tube penetrates through the supporting plate hole and the middle plate hole; wherein the size of the supporting plate hole is larger than the outer diameter of the heat exchange tube, so that a gap is formed between the heat exchange tube and the supporting plate hole, and the middle plate is configured to be capable of deforming after being stressed so as to at least partially fill the gap between the heat exchange tube and the inner wall of the supporting plate hole.

Description

Technical Field

[0001] The present application relates to a shell and tube heat exchanger, and in particular to a shell and tube heat exchanger applied to an air conditioning system. Background Art

[0002] The shell and tube heat exchanger includes a shell and a plurality of heat exchange tubes, which are placed side by side in the shell. A first fluid flows inside the heat exchange tubes, and a second fluid flows in the space between the shell and the outside of the heat exchange tubes. The first fluid and the second fluid exchange heat to change the temperature of the fluid. A supporting device is provided inside the shell to support the plurality of heat exchange tubes so that the heat exchange tubes are stably located inside the shell and maintain a distance between adjacent heat exchange tubes. Summary of the invention

[0003] The present application provides a shell and tube heat exchanger, comprising: a shell, a plurality of heat exchange tubes and at least one supporting device, the shell forming a shell cavity; the heat exchange tube is arranged in the shell cavity, the supporting device is arranged in the shell cavity and is configured to support the heat exchange tube, the heat exchange tube passes through the supporting device, the supporting device comprises a supporting plate, an intermediate plate and a pressing part, the supporting plate is fixed in the shell cavity, the intermediate plate, the supporting plate and the pressing part are arranged side by side, the supporting plate has a supporting plate hole, the intermediate plate has an intermediate plate hole, the heat exchange tube passes through the supporting plate hole and the intermediate plate hole; wherein the size of the support plate hole is larger than the outer diameter of the heat exchange tube, so that there is a gap between the heat exchange tube and the support plate hole, and the intermediate plate is configured to be deformable after being subjected to force so as to at least partially fill the gap between the heat exchange tube and the inner wall of the support plate hole.

[0004] In the shell and tube heat exchanger as described above, the support plate is made of a metal material, and the intermediate plate is made of a non-metal material.

[0005] In the shell and tube heat exchanger as described above, the clamping portion includes a pressure plate, and the intermediate plate is arranged between the pressure plate and the support plate. When the outside applies a force toward the support plate to the pressure plate, the intermediate plate can be deformed, and the pressure plate has a pressure plate hole, and the heat exchange tube passes through the pressure plate hole.

[0006] In the shell and tube heat exchanger as described above, along the extension direction of the heat exchange tube, the support plate hole has a first section and a second section, wherein the inner diameter of the first section is greater than the inner diameter of the second section, the middle plate is close to the first section, and the middle plate can enter the first section when deformed.

[0007] In the shell and tube heat exchanger as described above, along the height direction of the heat exchanger, the lower edge of the middle plate hole is higher than the lower edges of the support plate hole and the pressure plate hole.

[0008] In the shell and tube heat exchanger as described above, in the direction from the first section to the second section, the first section is a truncated cone with a gradually decreasing inner diameter, the intermediate plate has a convex portion, the shape of the convex portion matches the shape of the first section, and when the intermediate plate is not deformed under force, the convex portion can at least partially enter the first section.

[0009] The shell and tube heat exchanger as described above, the heat exchanger also includes at least one locking rod, the locking rod passes through the supporting device, one end of the locking rod passes through the shell and forms an operating end, the locking rod is configured to be movable relative to the supporting device, when force is applied to the operating end, the locking rod drives the pressure plate to move toward the supporting plate, thereby squeezing the middle plate to cause the middle plate to deform.

[0010] In the shell and tube heat exchanger as described above, the at least one supporting device comprises a plurality of supporting devices, the plurality of supporting devices are arranged at intervals, the at least one locking rod passes through the plurality of supporting devices in sequence, and the locking rod can drive the pressure plate of each of the plurality of supporting devices to move toward the corresponding support plate.

[0011] In the shell and tube heat exchanger as described above, the locking rod also includes a locking piece, which is arranged at the operating end of the locking rod, and the locking piece is configured to maintain the position of the pressure plate relative to the support plate after the intermediate plate is deformed and at least partially fills the gap between the heat exchange tube and the support plate hole.

[0012] The shell and tube heat exchanger as described above further comprises a positioning member, which is configured to connect the support plate, the middle plate and the pressure plate to limit the relative movement among the support plate, the middle plate and the pressure plate when the middle plate is not deformed under force.

[0013] The shell and tube heat exchanger in the present application includes a supporting device for supporting the heat exchange tube, and the supporting device includes a supporting plate, an intermediate plate and a pressing portion. The heat exchange tube passes through the supporting device and is supported by the supporting device. The supporting plate is made of a metal material, and the intermediate plate is made of a non-metallic material. When installing the heat exchange tube, the heat exchange tube is first inserted into the supporting device, and then the heat exchange tube is pressed and fixed in the supporting device. In the initial state, the heat exchange tube passes through the support plate hole and the intermediate plate hole, and there is a gap between the support plate hole. During the pressing and fixing operation, the intermediate plate can be deformed under the action of the pressing portion to fill the gap between the support plate holes. The supporting device in the present application makes the installation operation of the heat exchange tube easy, and can stably support the heat exchange tube and reduce the wear on the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1is a partial schematic diagram of a shell and tube heat exchanger of the first embodiment of the present application;

[0015] Figure 2 yes Figure 1 A partial enlarged view of the medium shell and tube heat exchanger;

[0016] Figure 3 yes Figure 1 A partial enlarged view of the support device of the medium shell and tube heat exchanger when it is in a locked state;

[0017] Figure 4 is a partial schematic diagram of a shell and tube heat exchanger of the second embodiment of the present application;

[0018] Figure 5 yes Figure 4 A partial enlarged view of the medium shell and tube heat exchanger;

[0019] Figure 6 yes Figure 4 A partial enlarged view of the support device of the medium shell and tube heat exchanger when it is in a locked state;

[0020] Figure 7 is a partial schematic diagram of a shell and tube heat exchanger of the third embodiment of the present application;

[0021] Figure 8 yes Figure 7 A partial enlarged view of the medium shell and tube heat exchanger;

[0022] Fig. 9 yes Figure 7 A partial enlarged view of the support device of the medium shell and tube heat exchanger when it is in the locked state. DETAILED DESCRIPTION

[0023] Various specific embodiments of the present application will be described below with reference to the accompanying drawings that form a part of this specification. It should be understood that although terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "positive", "negative", "proximal", "distal", "lateral", "longitudinal", etc., are used in the present application to describe various example structural parts and elements of the present application, these terms are used here only for the purpose of convenience of description, and these terms are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present application can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations.

[0024] Figure 1 FIG. 1 is a partial schematic diagram of a shell and tube heat exchanger of the first embodiment of the present application. Figure 1As shown, the shell and tube heat exchanger includes a shell 101, a plurality of supporting devices 120, locking devices 151 and 152, and a plurality of heat exchange tubes 108. The shell 101 includes a barrel 111, a first end plate 112, and a second end plate 113. The barrel 111 is roughly cylindrical and extends in the axial direction. The first end plate 112 and the second end plate 113 are respectively connected to the two ends of the barrel 111 in the axial direction, thereby forming a shell cavity 105 together with the barrel 111. Each of the plurality of supporting devices 120 is roughly flat and extends in the radial direction of the barrel. The plurality of supporting devices 120 are arranged in sequence in the axial direction of the barrel 111. Each supporting device 120 is fixed to the inner wall of the shell 101 and cannot move relative to the shell 101. The support device 120 is provided with a plurality of heat exchange tube holes, and each of the plurality of heat exchange tubes 108 extends along the axial direction of the barrel 111 and passes through the corresponding heat exchange tube hole on the support device 120, thereby being supported by the support device 120. There is a spacing between adjacent heat exchange tubes so that the fluid can pass through the gaps between adjacent heat exchange tubes. The locking devices 151 and 152 are connected to the plurality of support devices 120, and the locking devices 151 and 152 are used to lock the support devices. One end of the locking devices 151 and 152 extends out of the first end plate 112 to facilitate the locking operation.

[0025] Figure 1 The locking devices 151 and 152 of the shell and tube heat exchanger are in an unlocked pre-installed state.

[0026] Figure 2 yes Figure 1 A partial enlarged view of the medium shell and tube heat exchanger. Figure 2 Shows Figure 1 A portion of a supporting device and a locking device. Figure 1 and Figure 2As shown, the support device 120 includes a support plate 201, an intermediate plate 202 and a pressing portion 290. In one embodiment of the present application, the pressing portion 290 is a pressing plate 203. The support plate 201 is fixedly connected to the inner wall of the cylinder 111, so that the support plate 201 is fixed in the shell cavity 105. The support plate 201 cannot move relative to the shell 101. The support plate 201 has a first side 261 facing the first end plate 112 and a second side 262 facing the second end plate 113. The intermediate plate 202 is arranged between the second side 262 of the support plate 201 and the pressing plate 203. In one embodiment of the present application, the support plate 201, the intermediate plate 202 and the pressing plate 203 are all plate-shaped and have a support plate hole 219, an intermediate plate hole 229 and a pressing plate hole 239, respectively. The support plate holes 219, the middle plate holes 229 and the pressure plate holes 239 are aligned to form the heat exchange tube holes of the support device 120, and the heat exchange tube holes allow the heat exchange tubes to pass through. Each heat exchange tube passes through the heat exchange tube holes of multiple support devices 120 in sequence, so that it can be supported by the support device. Before the locking device 151 is locked, the inner diameters of the support plate holes 219, the middle plate holes 229 and the pressure plate holes 239 are slightly larger than the outer diameter of the heat exchange tube, so that the heat exchange tube can easily pass through the support device 120. There is a gap between the heat exchange tube and the support plate hole 219.

[0027] Combination Figure 1 and Figure 2 As shown, the locking device 151 includes a locking rod 140, a plurality of limiting members 242, a plurality of positioning members 250 and a locking member 146. The plurality of limiting members 242 and the plurality of positioning members 250 are connected to the locking rod 140. The locking rod 140 passes through the plurality of supporting devices 120 along the axial direction of the cylinder 111 and can slide in the plurality of supporting devices 120. One end of the locking rod 140 passes through the first end plate 112 of the housing 101 to form an operating end 142. The locking member 146 is located on the operating end 142. Positioning members 250 and limiting members 242 are respectively provided on both sides of each supporting device 120. The limiting member 242 is arranged on one side of the pressure plate and is fixedly connected to the locking rod 140. The limiting member 242 extends from the periphery of the locking rod 140 and can abut against the outer surface of the pressing plate 203. When the locking rod 140 moves relative to the supporting device 120 from the pressing plate 203 to the supporting plate 201, the limiting member 242 will drive the pressing plate 203 to move toward the supporting plate 201. The positioning member 250 is disposed on one side of the supporting plate 201 and abuts against the outer side of the supporting plate 201. The positioning member 250 and the limiting member 242 clamp the supporting device 120 therebetween. Figure 2 In the pre-installed state of the heat exchange tube shown, the positioning member 250 and the limit member 242 keep the middle plate 202 and the pressure plate 203 of the support device 120 in a position adjacent to the support plate 201, so that the support plate 201, the middle plate 202 and the pressure plate 203 form an integral structure to prevent the middle plate 202 and the pressure plate 203 from falling off.

[0028] In one embodiment of the present application, the positioning member 250 is a nut threadedly matched with the locking rod 140. In other embodiments of the present application, the positioning member can be a structure fixed to the locking rod 140 by a snap-fitting manner, or other structures fixed to the locking rod 140.

[0029] In another embodiment of the present application, the limiting member 242 may no longer be provided, and the locking rod 140 may be fixedly connected to the pressing plate 203, so that the movement of the locking rod 140 can drive the pressing plate 203 to move together.

[0030] In the present application, the support plate 201 is made of a metal material, and the intermediate plate 202 is made of a deformable non-metal material, such as rubber. The pressure plate 203 is made of a material with a certain strength, which can be a metal material or a high-strength non-metal material. The intermediate plate 202 can be deformed to a certain extent when subjected to pressure to fill the gap between the heat exchange tube and the support plate 201, so that the heat exchange tube is stably supported by the support device 120.

[0031] In the extension direction of the heat exchange tube, the support plate hole 219 includes a first section 231 and a second section 232 , wherein the inner diameter of the first section 231 is greater than the inner diameter of the second section 232 , the first section 231 is close to the middle plate 202 , and the second section 232 is close to the support plate 201 .

[0032] In one embodiment of the present application, along the height direction of the shell and tube heat exchanger, the middle plate hole 229 is staggered with the support plate hole 219 and the pressure plate hole 239, and the central axis of the middle plate hole 229 is higher than the central axis of the support plate hole 219 and the pressure plate hole 239. That is, the lower edge 281 of the middle plate hole 229 is higher than the lower edge 282 of the support plate hole 219 and the lower edge 283 of the pressure plate hole 239. When the heat exchange tube is installed into the support device 120, the bottom of the heat exchange tube contacts the lower edge 281 of the middle plate hole 229, and there is a certain distance between the bottom of the heat exchange tube and the lower edge 282 of the support plate hole 219 and the lower edge 283 of the pressure plate hole 239, which can prevent the heat exchange tube from wearing the support plate hole 219 and the outer wall of the heat exchange tube when the support device 120 slides, and reduce the noise during the installation process.

[0033] Figure 2 The pre-installed state of the heat exchange tube is shown in Figure 2In the pre-installed state shown, each support plate 201, middle plate 202 and pressing plate 203 is clamped between the corresponding limiter 242 and positioning member 250, and cannot move along the axial direction of the cylinder 111. The limiter 242 and positioning member 250 only limit the relative positions of the support plate 201, the middle plate 202 and the pressing plate 203, but do not apply pressure to the support plate 201, the middle plate 202 and the pressing plate 203. The middle plate 202 remains in the initial state without being compressed. The heat exchange tube passes through the heat exchange tube hole of each support device 120 in turn, and is supported by the support device 120. At this time, since the inner diameter of the heat exchange tube hole is larger than the outer diameter of the heat exchange tube, the heat exchange tube can swing in the heat exchange tube hole.

[0034] Figure 3 yes Figure 1 A partial enlarged view of the support device of the medium shell and tube heat exchanger when it is in the locked state. Figure 3 The local position shown is Figure 2 The local positions shown are the same, except that Figure 3 The supporting device in the embodiment is in a locked state.

[0035] Combination Figure 1-Figure 3 As shown, after the heat exchange tube reaches the pre-installed state, the locking operation can be further performed. The operator applies force to the operating end 142 of the locking device 151 outside the first end plate 112, so that the locking rod 140 moves in the direction from the second end plate 113 to the first end plate 112. Subsequently, the locking rod 140 drives the limiter 242 to move toward the first end plate 112, and the limiter 242 drives the pressing plate 203 to move toward the first end plate 112. That is, each pressing plate 203 moves toward the corresponding support plate 201. Since the support plate 201 is fixed on the inner wall of the shell 101, the support plate 201 cannot move relative to the shell 101, so that the pressing plate 203 moves toward the support plate 201 and squeezes the middle plate 202, so that the middle plate 202 undergoes a certain deformation.

[0036] like Figure 3 As shown, when the middle plate 202 is squeezed and deformed, the material of the middle plate 202 will flow toward the gap between the support plate 201 and the heat exchange tube 108 to fill the gap between the support plate 201 and the heat exchange tube 108, thereby supporting and protecting the heat exchange tube 108.

[0037] Combination Figure 2As shown, in one embodiment of the present application, the support plate hole 219 is close to the first section 231 of the pressure plate with a slightly larger diameter. In the pre-installed state of the heat exchange tube, the inner diameter of the middle plate hole 229 is larger than the inner diameter of the first section 231 of the support plate hole 219, and the inner edge of the middle plate hole 229 exceeds the inner edge of the first section 231. When the middle plate 202 is squeezed and deformed, the material of the middle plate 202 near the middle plate hole 229 is easy to enter the space between the first section 231 and the heat exchange tube. That is, the setting of the first section 231 of the support plate hole 219 can guide the material of the middle plate 202 to enter the gap between the support plate hole 219 and the heat exchange tube 108.

[0038] like Figure 3 As shown, when the locking device is in the locked state, the locking member 146 is used outside the first end plate 112 to maintain the position of the locking rod 140 relative to the housing 101, so that the locking rod 140 cannot be moved relative to the housing.

[0039] 101 moves. In the locked state, the middle plate 202 is squeezed and becomes thinner, the distance between the pressing plate 203 and the support plate 201 is reduced, and the positioning member 250 leaves the support plate 201 and has a certain distance from the support plate 201. After being squeezed, the middle plate 202 is deformed, and a part of the material of the middle plate 202 is squeezed into the gap between the heat exchange tube 108 and the support plate hole 219, so that at the heat exchange tube hole of the support device 120, the heat exchange tube 108 is surrounded by the material of the middle plate 202 and cannot shake relative to the heat exchange tube hole. The heat exchange tube 108 is stably supported in the support device 120.

[0040] When the locking device reaches the locked state, the locking member 146 remains in the locked position, so that the pressure plate 203 continuously applies pressure to the middle plate 202 to prevent the middle plate 202 from returning to its original state.

[0041] The locking device 152 has the same function as the locking device 151. In other embodiments of the present application, more locking devices may be provided so that the support device 120 is uniformly stressed at all locations.

[0042] In other embodiments of the present application, the pressing portion 290 may be in other shapes other than a plate shape, and may apply pressure to the middle plate 202 to deform it when locking.

[0043] In the present application, the support device includes a support plate 201, an intermediate plate 202 and a pressure plate 203. When the shell and tube heat exchanger in the present application is installed, the heat exchange tube 108 is first installed to the support device 120, and then the locking operation is performed, which is conducive to the convenient and stable installation of the heat exchange tube 108. When installing the heat exchange tube, since the diameter of the heat exchange tube 108 hole of the support device is large, it is convenient for the heat exchange tube 108 to pass through the tube. The support device 120 has a deformable intermediate plate 202, which can fill the gap between the heat exchange tube 108 and the heat exchange tube hole, so that the heat exchange tube can be stably installed in the support device 120.

[0044] In some shell and tube heat exchangers, the heat exchange tubes have fins to increase the heat exchange area. The heat exchange tubes with fins cannot be connected to the support device through the expansion process. If the heat exchange tube hole of the support device is directly passed through for installation, the heat exchange tube hole needs to match the outer diameter of the heat exchange tube, which may make the tube threading operation difficult. And because the fins of the heat exchange tube are prone to deformation and wear, a large number of support devices are usually required to share the pressure of the heat exchange tube. In a shell and tube heat exchanger using a heat exchange tube with fins, if the inner diameter of the heat exchange tube hole is enlarged to facilitate the tube threading operation, a tube clamp needs to be set between the heat exchange tube and the support device to prevent the heat exchange tube from shaking relative to the support device. The operation of setting the tube clamp is cumbersome, and there is a risk of the tube clamp falling off. The support device in the present application can adapt to a variety of heat exchange tubes, is easy to install, and is not easy to wear the heat exchange tube. And after the installation is completed, the heat exchange tube is stable and reliable, and not easy to shake. The heat exchange tube with fins can also be stably installed in the support device, and there is no need to increase the number of support devices.

[0045] Figure 4 is a partial schematic diagram of a shell and tube heat exchanger of the second embodiment of the present application, Figure 5 yes Figure 4 A partial enlarged view of the medium shell and tube heat exchanger. Figure 6 yes Figure 4 A partial enlarged view of the support device of the medium shell and tube heat exchanger when it is in the locked state. Figure 4 The embodiment shown is Figure 1 The second embodiment shown is similar except that the shape of the support plate holes is different.

[0046] and Figure 1 Similar to the embodiment shown, Figure 4 The shell and tube heat exchanger in the embodiment includes a shell 101, a plurality of supporting devices 420, locking devices 151 and 152, and a plurality of heat exchange tubes 108. The shell 101 includes a cylinder 111, a first end plate 112, and a second end plate 113. The shell 101, the locking devices 151 and 152, and the plurality of heat exchange tubes 108 are connected to the shell 101. Figure 1 The corresponding structures and arrangements are the same in the embodiment of FIG. 4 . In this embodiment, the supporting device 420 is Figure 1The middle support device 120 is different.

[0047] like Figure 5 As shown, Figure 5 The support device 420 in the embodiment includes a support plate 501, an intermediate plate 502 and a pressure plate 503. The support plate 501 cannot move relative to the shell 101. The support plate 501 has a first side 561 facing the first end plate 112 and a second side 562 facing the second end plate 113. The intermediate plate 502 is arranged between the second side 562 of the support plate 501 and the pressure plate 503. In one embodiment of the present application, the support plate 501, the intermediate plate 502 and the pressure plate 503 are all plate-shaped and have a support plate hole 519, an intermediate plate hole 529 and a pressure plate hole 539 respectively. The support plate hole 519, the intermediate plate hole 529 and the pressure plate hole 539 are aligned to form the heat exchange tube hole of the support device 120.

[0048] The structure of the pressing plate 503 is the same as that of the pressing plate 203 in the first embodiment. The supporting plate 501 and the middle plate 502 are different from the supporting plate 201 and the middle plate 202.

[0049] like Figure 5 and Figure 6 As shown, in the extension direction of the heat exchange tube, the support plate hole 519 includes a first section 531 and a second section 532, wherein the first section 531 is close to the middle plate 502, and the second section 532 is close to the support plate 501. In the direction from the first section 531 to the second section 532, the first section 531 is a truncated cone with a gradually decreasing inner diameter.

[0050] The middle plate 502 has a convex portion 528, which is close to the edge of the middle plate hole 529 and extends toward the support plate 501. The inner diameter of the convex portion 528 gradually decreases in the direction toward the support plate 501, and the shape of the convex portion 528 matches the shape of the first section 531. Figure 5 When the intermediate plate 502 is deformed without being subjected to any force, the protrusion 528 at least partially enters the first section 531 .

[0051] Figure 4 The heat exchange tube installation process and Figure 1 The installation process of the embodiment is the same. First, install the heat exchange tube into the heat exchange tube hole of the support device 420, and then apply force to the locking rod 140 so that the pressing plate 503 moves toward the support plate 501 to squeeze the middle plate 502.

[0052] 528 is partially located in the first section 531 of the support plate hole 519, and the first section 531 of the support plate hole 519 is a gradually shrinking shape, which is conducive to guiding the material of the middle plate 502 to flow toward the support plate hole 519 to fill the gap between the support plate hole 519 and the heat exchange tube 108, which can not only support the heat exchange tube 108 more tightly, but also prevent the heat exchange tube 108 from being damaged by the edge of the support plate hole 519.

[0053] This embodiment can achieve Figure 1 The technical effect is similar to that of the embodiment in FIG. Figure 1 Compared with the embodiment in the embodiment, the middle plate 502 in this embodiment is easier to fill the gap of the support plate hole 519.

[0054] Figure 7 is a partial schematic diagram of a shell and tube heat exchanger of the third embodiment of the present application, Figure 8 yes Figure 7 A partial enlarged view of the medium shell and tube heat exchanger. Fig. 9 yes Figure 7 A partial enlarged view of the support device of the medium shell and tube heat exchanger when it is in the locked state. Figure 7 The embodiment shown is Figure 2 The second embodiment shown is similar, except that the position of the intermediate plate is arranged differently.

[0055] and Figure 4 Similar to the embodiment shown, Figure 7 The shell and tube heat exchanger in the embodiment includes a shell 101, a plurality of supporting devices 420, locking devices 151 and 152, and a plurality of heat exchange tubes 108. The shell 101 includes a cylinder 111, a first end plate 112, and a second end plate 113. The shell 101, the locking devices 151 and 152, and the plurality of heat exchange tubes 108 are connected to the shell 101. Figure 4 The corresponding structures and arrangements in the embodiments are the same, and the supporting device 720 in this embodiment is Figure 4 There are differences in the supporting device 420.

[0056] like Figure 7-9 As shown, Figure 7 The support device 720 in the embodiment includes a support plate 801, an intermediate plate 802 and a pressure plate 803. The support plate 801 cannot move relative to the shell 101. The support plate 801 has a first side 861 facing the first end plate 112 and a second side 862 facing the second end plate 113. The intermediate plate 802 is arranged between the second side 862 of the support plate 801 and the pressure plate 803. In one embodiment of the present application, the support plate 801, the intermediate plate 802 and the pressure plate 803 are all plate-shaped and have a support plate hole 819, an intermediate plate hole 829 and a pressure plate hole 839 respectively. The support plate hole 519, the intermediate plate hole 529 and the pressure plate hole 539 are aligned to form the heat exchange tube hole of the support device 120.

[0057] In this embodiment, the support plate hole 519, the middle plate hole 529 and the pressure plate hole 539 have the same aperture.

[0058] And they are coaxially arranged, so that the heat exchange tube hole is a hole with uniform inner diameter. When the heat exchange tube is inserted into the hole of the support device, the heat exchange tube is easier to pass through the heat exchange tube hole with uniform inner diameter in the present application.

[0059] Figure 7 The heat exchange tube installation process and Figure 1 The installation process of the embodiment in is the same as that of the embodiment in FIG. Figure 1 and Figure 4 The technical effect is similar to that of the embodiment in the embodiment.

[0060] The support device of the shell and tube heat exchanger in the present application is suitable for various heat exchange tubes, especially heat exchange tubes with fin structures. The support device in the present application can stably hold the heat exchange tube in the support device, and the operation is simple and reliable.

[0061] Although the present disclosure has been described in conjunction with the examples of the embodiments summarized above, various alternatives, modifications, variations, improvements and / or substantially equivalent solutions, whether known or currently or foreseeable in the near future, may be apparent to those of ordinary skill in the art. In addition, the technical effects and / or technical problems described in this specification are exemplary rather than restrictive; so the disclosure in this specification may be used to solve other technical problems and have other technical effects. Therefore, the examples of the embodiments of the present disclosure set out above are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to include all known or earlier developed alternatives, modifications, variations, improvements and / or substantially equivalent solutions.

Claims

1. A shell and tube heat exchanger, characterized in that include: A shell, wherein the shell encloses a shell cavity; A plurality of heat exchange tubes, wherein the heat exchange tubes are arranged in the housing cavity. at least one supporting device, the supporting device is arranged in the housing cavity and configured to support the heat exchange tube, the heat exchange tube passes through the supporting device, the supporting device comprises a supporting plate, an intermediate plate and a pressing portion, the supporting plate is fixed in the housing cavity, the intermediate plate, the supporting plate and the pressing portion are arranged side by side, the supporting plate has a supporting plate hole, the intermediate plate has an intermediate plate hole, the heat exchange tube passes through the supporting plate hole and the intermediate plate hole; The size of the support plate hole is larger than the outer diameter of the heat exchange tube, so that there is a gap between the heat exchange tube and the support plate hole, and the intermediate plate is configured to be deformable after being subjected to force so as to at least partially fill the gap between the heat exchange tube and the inner wall of the support plate hole.

2. The shell and tube heat exchanger according to claim 1, characterized in that: The support plate is made of metal material, and the middle plate is made of non-metal material.

3. The shell and tube heat exchanger according to claim 1, characterized in that: The clamping portion includes a pressing plate, and the intermediate plate is arranged between the pressing plate and the supporting plate. When the outside applies a force toward the supporting plate to the pressing plate, the intermediate plate can be deformed. The pressing plate has a pressing plate hole, and the heat exchange tube passes through the pressing plate hole.

4. The shell and tube heat exchanger according to claim 1, characterized in that: Along the extension direction of the heat exchange tube, the support plate hole has a first section and a second section, wherein the inner diameter of the first section is greater than the inner diameter of the second section, the middle plate is close to the first section, and the middle plate can enter the first section when deformed.

5. The shell and tube heat exchanger according to claim 3, characterized in that: Along the height direction of the heat exchanger, the lower edge of the middle plate hole is higher than the lower edges of the support plate hole and the pressure plate hole.

6. The shell and tube heat exchanger according to claim 4, characterized in that: In the direction from the first section to the second section, the first section is a truncated cone with a gradually decreasing inner diameter, and the intermediate plate has a convex portion, the shape of which matches the shape of the first section, and when the intermediate plate is not deformed under force, the convex portion can at least partially enter the first section.

7. The shell and tube heat exchanger according to claim 3, characterized in that: The heat exchanger also includes at least one locking rod, which passes through the supporting device. One end of the locking rod passes through the shell and forms an operating end. The locking rod is configured to be movable relative to the supporting device. When force is applied to the operating end, the locking rod drives the pressure plate to move toward the supporting plate, thereby squeezing the middle plate to cause the middle plate to deform.

8. The shell and tube heat exchanger according to claim 7, characterized in that: The at least one supporting device comprises a plurality of supporting devices, the plurality of supporting devices are arranged at intervals, the at least one locking rod passes through the plurality of supporting devices in sequence, and the locking rod can drive the pressure plate of each of the plurality of supporting devices to move toward the corresponding support plate.

9. The shell and tube heat exchanger according to claim 7, characterized in that: The locking rod also includes a locking piece, which is arranged at the operating end of the locking rod and is configured to maintain the position of the pressure plate relative to the support plate after the intermediate plate is deformed and at least partially fills the gap between the heat exchange tube and the support plate hole.

10. The shell and tube heat exchanger according to claim 3, characterized in that: The heat exchanger further includes a positioning member configured to connect the support plate, the middle plate and the pressure plate to limit relative movement among the support plate, the middle plate and the pressure plate when the middle plate is not deformed under force.

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