Heat exchanger with optimized installation structure and installation method thereof

Abstract

The present application discloses a heat exchanger with an optimized mounting structure and an installation method thereof, wherein the fixed rod comprises a base rod and a plurality of sub-fixed rods connected in sequence, the outer diameters of the base rod and the plurality of sub-fixed rods are gradually reduced, a plurality of baffles are respectively arranged corresponding to the sub-fixed rods on the fixed rod, and the inner diameters of the second fixing holes on each baffle are respectively consistent with the outer diameters of the corresponding sub-fixed rods. The heat exchanger with an optimized mounting structure and the installation method thereof provided by the present invention, the combination of the characteristics of the base rod and the plurality of sub-fixed rods having gradually reduced outer diameters, the baffles respectively corresponding to the sub-fixed rods on the fixed rod, and the inner diameters of the second fixing holes on the baffles being respectively consistent with the outer diameters of the corresponding sub-fixed rods, realizes the action of the fixed rod pushing the baffles one by one, sequentially superimposes the plurality of baffles on the inner side surface of the first fixed tube sheet to form a positioning body, and verifies whether the first mounting hole on the first fixed tube sheet is aligned with the third mounting hole on the baffle.

Description

Technical Field

[0001] The invention relates to the field of heat exchanger structures, and in particular to a heat exchanger with an optimized mounting structure and a mounting method thereof. Background Art

[0002] The shell and tube heat exchanger is mainly composed of a shell, a tube bundle, a tube sheet and a head. The shell is mostly circular, with parallel tube bundles or spiral tubes installed inside, and both ends of the tube bundle are fixed to the tube sheet. The two fluids that exchange heat in the shell and tube heat exchanger, one flows inside the tube, and its stroke is called the tube side; the other flows outside the tube, and its stroke is called the shell side. The wall surface of the tube bundle is the heat transfer surface. In order to allow the fluid in the shell to exchange heat for a long time, the adapter tube bundle will be provided with multiple baffles, and the baffles need to be provided with a hole group corresponding to the tube bundle. There are only two ways to set the baffle: fixed to the heat exchange tube group or fixed to other components of the heat exchanger (shell or fixed tube sheet).

[0003] The process of pre-fixing the baffles to the heat exchange tube group is complicated. The overall structure formed by the two is difficult to transfer and the possibility of abnormal structural deformation increases. If the baffles are pre-fixed to other components of the heat exchanger, and then the heat exchange tubes are sequentially passed through multiple baffles, it will be difficult to pass the heat exchange tubes through the baffles, and the above difficulties will become more obvious when there are a large number of baffles. Especially after all the baffles are installed, when inserting the heat exchange tubes, it is found that the multiple baffles are not completely aligned, and it becomes more difficult to correct. Then the clearance fit size between the heat exchange tube and the fixed hole on the baffle needs to be set larger, which affects the baffle effect. Summary of the invention

[0004] The main purpose of the present invention is to provide a heat exchanger with an optimized installation structure and an installation method thereof, aiming to solve the problem that when the baffles are pre-fixed on other components of the heat exchanger, it is more difficult to pass the heat exchange tube through the baffles; especially after the baffles are installed, when inserting the heat exchange tube, it is found that multiple baffles are not completely aligned, which becomes increasingly difficult to correct the problem.

[0005] In order to achieve the above object, the present invention provides a heat exchanger with an optimized mounting structure, comprising:

[0006] The shell is cylindrical, and the two ends in the length direction are respectively provided with a first fixed tube sheet and a second fixed tube sheet;

[0007] A tube box is arranged at one end of the shell in the length direction and closes the first fixed tube sheet;

[0008] A floating head cover assembly is arranged at the other end of the shell in the length direction to close the second fixed tube sheet;

[0009] A plurality of heat exchange tubes are fixed between the first fixed tube sheet and the second fixed tube sheet and the two ends in the length direction are respectively connected to the tube box and the floating head cover assembly, wherein the first fixed tube sheet and the second fixed tube sheet are respectively provided with a first mounting hole and a second mounting hole corresponding to the heat exchange tube;

[0010] A plurality of fixing rods, wherein the fixing rods include a base rod and a plurality of sub-fixing rods connected in sequence, wherein the outer diameters of the base rod and the plurality of sub-fixing rods are gradually reduced to form a plurality of step structures, and the base rod is detachably connected to the first fixed tube sheet;

[0011] A plurality of baffles are arranged at intervals on the shell, the baffles are circular and divided into a solid portion and a hollow window portion on the surface, the solid portion is provided with a plurality of second fixing holes corresponding to the plurality of fixing rods, and the solid portion is provided with a third mounting hole corresponding to the heat exchange tube, wherein the plurality of baffles are respectively arranged corresponding to the plurality of sub-fixing rods on the fixing rod, and the inner diameter of the second fixing hole on each of the baffles is respectively consistent with the outer diameter of the corresponding sub-fixing rod.

[0012] Furthermore, an elastic snap-fit ​​structure is detachably provided on the sub-fixing rod corresponding to the step structure, wherein the distance between the elastic snap-fit ​​structure and the step structure is the thickness dimension of the baffle, and wherein the deformation direction of the elastic snap-fit ​​structure is the radial direction of the sub-fixing rod.

[0013] Further, the fixing rod is connected between the first fixing tube sheet and the second fixing tube sheet.

[0014] Furthermore, an abutment ring corresponding to the baffle plate is provided on the inner wall of the shell, and the position of the abutment ring in the length direction of the shell is set corresponding to the setting of the sub-fixing rod, and the inner diameters of the plurality of abutment rings decrease step by step in the length direction of the shell; the outer diameters of the plurality of baffle plates decrease step by step in the length direction of the shell, and the outer diameter of the baffle plate is smaller than the inner diameter of the corresponding abutment ring.

[0015] Furthermore, the heat exchanger with optimized mounting structure also includes a first gasket arranged in pair with the abutment ring, and the first gasket is arranged around the inner wall of the shell, wherein the first gasket is a metal spring gasket or a polymer gasket, and the first gasket is connected to the abutment ring or the baffle.

[0016] Furthermore, it also includes a plurality of second washers, and the second washers are arranged corresponding to the step structure.

[0017] Furthermore, the outer diameter of the heat exchange tube is 1.05 to 1.10 times the inner diameter of the second fixing hole.

[0018] Furthermore, the outer periphery of the baffle is clearance-fitted with the inner wall of the shell.

[0019] The present invention also provides an installation method, which is applied to the above-mentioned heat exchanger with optimized installation structure, and is characterized by comprising:

[0020] S1, sequentially stacking a plurality of baffles on the inner side surface of a first fixed tube sheet to form a positioning body;

[0021] S2, connecting the alignment body to one end of the shell in the length direction;

[0022] S3, inserting all the fixing rods and at least part of the heat exchange tubes into the positioning body;

[0023] S4, installing the second fixed tube sheet at one end of the shell in the length direction;

[0024] S5. Complete the installation of all heat exchange tubes;

[0025] S6, installing the tube box and the floating head cover assembly at both ends of the shell in the length direction and sealing the first fixed tube sheet and the second fixed tube sheet;

[0026] Further, the steps between step S2 and step S3 include:

[0027] The second fixed tube sheet is connected to one end of the shell in the length direction, wherein the distance between the second fixed tube sheet and the first fixed tube sheet in the length direction of the shell is 1 meter to 3 meters.

[0028] The heat exchanger with optimized mounting structure and the mounting method thereof provided by the present invention, the characteristics of the outer diameters of the base rod and the plurality of sub-fixed rods decreasing step by step, the sub-fixed rods on the baffles respectively corresponding to the fixed rods, and the inner diameters of the second fixed holes on the baffles respectively being consistent with the outer diameters of the corresponding sub-fixed rods, can realize the action of the fixed rods pushing the baffles one by one. Multiple baffles are sequentially superimposed on the inner side surface of the first fixed tube sheet to form a positioning body. During this process, it can be verified whether the first mounting hole on the first fixed tube sheet is aligned with the third mounting hole on the baffle, and corresponding adjustments can be made; it can also be verified whether the first fixing hole on the first fixed tube sheet is aligned with the second fixing hole on the baffle. In the process of completing the installation of the heat exchange tubes, fixed rods and baffles, it is only necessary to push the fixed rods and the heat exchange tubes, and no other alignment process is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of a heat exchanger with optimized installation structure according to the first embodiment of the present invention;

[0030] Figure 2It is a schematic diagram of the overlap of the baffle plate and the first fixed tube sheet in the heat exchanger with optimized installation structure in the first embodiment of the present invention;

[0031] Figure 3 Schematic diagram of a baffle in a heat exchanger with optimized installation structure according to a first embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram (cross section) of the overlap of the baffle plate and the first fixed tube sheet in the heat exchanger with optimized installation structure according to the first embodiment of the present invention;

[0033] Figure 5 yes Figure 4 Local magnification of

[0034] Figure 6 It is a schematic diagram of the installation process of the heat exchanger with optimized installation structure according to the first embodiment of the present invention;

[0035] Figure 7 Schematic diagram of a fixing rod of a heat exchanger with an optimized mounting structure according to a first embodiment of the present invention;

[0036] Figure 8 yes Figure 7 Local magnification of

[0037] Fig. 9 Schematic diagram of a fixed retaining ring of a heat exchanger with an optimized mounting structure according to a first embodiment of the present invention;

[0038] Fig.10 This is a schematic diagram of the installation of the baffle of the heat exchanger with optimized installation structure according to the first embodiment of the present invention (partially removed);

[0039] Fig.11 This is a schematic diagram of the installation of the baffle of the heat exchanger with optimized installation structure according to the second embodiment of the present invention (partially cut away).

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0042] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0043] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0044] Reference Figures 1 to 11 In one embodiment of the present invention, a heat exchanger with an optimized mounting structure includes:

[0045] The shell 100 is cylindrical, and a first fixed tube sheet 200 and a second fixed tube sheet 300 are respectively provided at both ends in the length direction;

[0046] The tube box 400 is disposed at one end of the shell 100 in the length direction and closes the first fixed tube sheet 200;

[0047] The floating head cover assembly 500 is disposed at the other end of the shell 100 in the length direction to seal the second fixed tube sheet 300;

[0048] A plurality of heat exchange tubes 600 are fixed between the first fixed tube sheet 200 and the second fixed tube sheet 300, and both ends of the length direction are respectively connected to the tube box 400 and the floating head cover assembly 500, wherein the first fixed tube sheet 200 and the second fixed tube sheet 300 are respectively provided with a first mounting hole 220 and a second mounting hole 310 corresponding to the heat exchange tubes 600;

[0049] A plurality of fixed rods 700, wherein the fixed rods 700 include a base rod 710 and a plurality of sub-fixed rods 720 connected in sequence, wherein the outer diameters of the base rod 710 and the plurality of sub-fixed rods 720 are gradually reduced to form a plurality of step structures 730, and the base rod 710 is detachably connected to the first fixed tube sheet 200;

[0050] A plurality of baffles 800 are arranged at intervals on the shell 100, and the baffles 800 are circular and divided into a solid portion 810 and a hollow window portion 820 on the surface, and a plurality of second fixing holes 811 corresponding to the plurality of fixing rods 700 are provided on the solid portion 810, and a third mounting hole 812 corresponding to the heat exchange tube 600 is provided on the solid portion 810, wherein the plurality of baffles 800 are respectively arranged corresponding to the plurality of sub-fixing rods 720 on the fixing rod 700, and the inner diameter of the second fixing hole 811 on each of the baffles 800 is respectively consistent with the outer diameter of the corresponding sub-fixing rod 720.

[0051] In the prior art, the process of pre-fixing the baffles to the heat exchange tube 600 group is complicated, and the overall structure formed by the two is difficult to transfer and the possibility of abnormal structural deformation is increased; if the baffles are pre-fixed on other components of the heat exchanger, and then the heat exchange tube 600 is sequentially passed through multiple baffles, then the process of passing the heat exchange tube 600 through the baffles is relatively difficult, and the above difficulties become more obvious when the number of baffles is large; especially after the baffles are installed, when inserting the heat exchange tube 600, when it is found that the multiple baffles are not completely aligned, it becomes more difficult to correct.

[0052] In the present invention, the shell 100, the tube box 400, the floating head cover assembly 500, the first fixed tube sheet 200, the second fixed tube sheet 300 and the heat exchange tube 600 realize the main functions of the heat exchanger. The tube box 400 is provided with a treatment liquid inlet and a treatment liquid outlet, and the tube box 400 is divided into a liquid inlet cavity and a liquid outlet cavity. After the plurality of heat exchange tubes 600 are fixed, the two ends of the length direction thereof are respectively connected to the first fixed tube sheet 200 and the second fixed tube sheet 300. When the tube box 400 and the floating head cover assembly 500 are respectively connected to the shell 100, the two ends of the length direction of the heat exchange tube 600 are respectively connected to the tube box 400 and the floating head cover assembly 500. When the tube box 400 is combined with the shell 100, it forms a seal with the first fixed tube sheet 200, and the liquid inlet cavity and the liquid outlet cavity respectively correspond to parts of the plurality of heat exchange tubes 600. The above description of the heat exchange tube 600 does not include the fixing rod 700 and the baffle 800, but in the present invention, the fixing rod 700, the baffle 800 and the heat exchange tube 600 are installed synchronously. The second fixing holes 811 at corresponding positions on the baffles 800 are concentrically arranged.

[0053] The outer diameters of the base rod 710 and the multiple sub-fixing rods 720 decrease step by step; the baffles 800 are respectively arranged corresponding to the sub-fixing rods 720 on the fixing rod 700; the inner diameters of the second fixing holes 811 on the baffles 800 are respectively consistent with the outer diameters of the corresponding sub-fixing rods 720; the combination of the above three settings can realize the action of the fixing rod 700 pushing the baffles 800 one by one.

[0054] The following briefly describes the installation process of the heat exchange tube 600, the fixing rod 700 and the baffle 800:

[0055] In this embodiment, a plurality of baffles 800 are sequentially superimposed on the inner side of the first fixed tube sheet 200 to form the alignment body 080. During this process, it can be verified whether the first mounting hole 210 on the first fixed tube sheet 200 and the third mounting hole 812 on the baffle 800 are aligned, and corresponding adjustments can be made; it can also be verified whether the first fixing hole 210 on the first fixed tube sheet 200 and the second fixing hole 811 on the baffle 800 are aligned. During the assembly process of the alignment body 080, some devices can be used to clamp the baffle 800 and the first fixed tube sheet 200 in the thickness direction, and the first fixed tube sheet 200 and the baffle 800 can be fixed to form the alignment body 080. In the present invention, the through hole formed by the overlap of the first mounting hole 210 and the third mounting hole 812 in the alignment body 080 is the heat exchange tube mounting hole, and the through hole formed by the overlap of the first fixing hole 210 and the second fixing hole 811 is the fixing rod mounting hole.

[0056] The alignment body 080 is connected to one end of the shell 100 in the length direction to complete the preparation work for the installation of the fixing rod 700 and the heat exchange tube 600; during this process, the accurate alignment state of the first fixed tube sheet 200 and the baffle plate 800 will not change.

[0057] All the fixing rods 700 and at least part of the heat exchange tubes 600 are inserted into the alignment body 080; in this step, first, all or part of the heat exchange tubes 600 can be installed simultaneously with the fixing rods 700 (the simultaneous installation of all the heat exchange tubes 600 is more efficient, but there is a problem of heavy operation weight); secondly, during the installation of the fixing rods 700, the end of the fixing rod 700 with the smallest diameter is inserted through the fixing rod installation hole of the alignment body 080, and the heat exchange tubes 600 are inserted through the heat exchange tube installation hole. During the process of the heat exchange tubes being inserted, the heat exchange tubes 600 will not encounter any resistance. During the insertion of the fixing rod 700, the outer diameters of the base rod 710 and the multiple sub-fixing rods 720 decrease step by step, and the inner diameters of the second fixing holes 811 on the baffle 800 are respectively consistent with the outer diameters of the corresponding sub-fixing rods 720. When the fixing rod 700 is inserted from the fixing rod installation hole of the alignment body 080, the multiple step structures 730 on the fixing rod 700 will sequentially interact with the corresponding baffles 800, that is, the fixing rod 700 pushes the baffles 800 out sequentially. In the above process, the fixing rod 700 and the heat exchange tube 600 only need to be aligned with the alignment body 080, and in the process of completing the installation of the heat exchange tube 600, the fixing rod 700 and the baffle 800, it is only necessary to push the fixing rod 700 and the heat exchange tube 600, and no other alignment process is required.

[0058] In step S4, the second fixed tube sheet 300 is installed at one end of the shell 100 in the length direction, completing the main body installation process of the heat exchanger.

[0059] In step S5 , all the heat exchange tubes 600 are installed, that is, both ends of the length direction of all the heat exchange tubes 600 are fixed to the first fixed tube sheet 200 and the second fixed tube sheet 300 respectively.

[0060] In step S6, the tube box 400 and the floating head cover assembly 500 are installed at both ends of the shell 100 in the length direction and the first fixed tube sheet 200 and the second fixed tube sheet 300 are closed to complete the installation process of the heat exchanger.

[0061] In summary, the combination of the characteristics of the outer diameters of the base rod 710 and the plurality of sub-fixed rods 720 decreasing step by step, the arrangement of the sub-fixed rods 720 on the baffle plates 800 corresponding to the fixed rods 700, and the inner diameters of the second fixing holes 811 on the baffle plates 800 being respectively consistent with the outer diameters of the corresponding sub-fixed rods 720, can realize the action of the fixed rod 700 pushing the baffle plates 800 one by one. Multiple baffle plates 800 are sequentially superimposed on the inner side surface of the first fixed tube sheet 200 to form a positioning body 080. In this process, it can be verified whether the first mounting hole 210 on the first fixed tube sheet 200 is aligned with the third mounting hole 812 on the baffle plate 800, and corresponding adjustments can be made; it can also be verified whether the first fixing hole 210 on the first fixed tube sheet 200 is aligned with the second fixing hole 811 on the baffle plate 800. In the process of installing the heat exchange tube 600 , the fixing rod 700 and the baffle 800 , it is only necessary to push the fixing rod 700 and the heat exchange tube 600 , and no other alignment process is required.

[0062] In one embodiment, the windows 820 of adjacent baffles 800 are staggered, and the baffles 800 have a more obvious baffle effect, so that the working time of the fluid in the shell 100 can be extended.

[0063] Reference Figures 7 to 9 In one embodiment, an elastic snap-in structure is detachably provided on the sub-fixing rod 720 corresponding to the step structure 730, wherein the distance between the elastic snap-in structure and the step structure 730 is the thickness dimension of the baffle 800, and wherein the deformation direction of the elastic snap-in structure is the radial direction of the sub-fixing rod 720.

[0064] In the aforementioned embodiment, one side of the baffle 800 in the thickness direction is restricted by the step structure 730, while the fixing method of the other side of the baffle 800 in the thickness direction is not restricted (or can even be free). In this embodiment, by providing an elastic snap-fit ​​structure on the sub-fixing rod 720 corresponding to the step structure 730, and the distance between the elastic snap-fit ​​structure and the step structure 730 is the thickness dimension of the baffle 800, the combined action of the elastic snap-fit ​​structure and the step structure 730 can enhance the fixing effect of the baffle 800. When the elastic snap-fit ​​structure on the sub-fixing rod 720 is in the second fixing hole 811, the elastic snap-fit ​​structure is pressed down, and when the elastic snap-fit ​​structure passes through the second fixing hole 811, the elastic snap-fit ​​structure pops up, and then the elastic snap-fit ​​structure and the step structure 730 fix the baffle 800. And the above structure is beneficial to the process of installing the fixing rod 700 from the outside of the shell 100. In one embodiment, the elastic snap-fit ​​structure is a fixed retaining ring 740, which has a simple structure and reliable function. Specifically, during application, an annular snap-fit ​​groove of the fixed retaining ring 740 is provided on the sub-fixing rod 720. In order to ensure a smooth installation of the fixing rod 700, the second fixing hole 811 has a chamfered structure on one side in the thickness direction of the baffle 800. Therefore, during the insertion of the fixing rod 700, the elastic snap-fit ​​structure can be smoothly pressed down through the chamfered structure.

[0065] Reference Figures 10 to 11 In one embodiment, the fixing rod 700 is connected between the first fixed tube sheet 200 and the second fixed tube sheet 300 .

[0066] In the above-mentioned embodiment, both ends of the fixing rod 700 in the length direction are not restricted to be fixed. For example, the fixing rod 700 can be fixed to the first fixed tube sheet 200 at only one end in the length direction, while the other end in the length direction of the fixing rod 700 is free and not supported. In this embodiment, by fixing both ends of the fixing rod 700 in the length direction, the fixing effect is relatively stable. There are various ways to fix the two ends of the fixing rod 700 in the length direction on the first fixed tube sheet 200 and the second fixed tube sheet 300, which can be a non-detachable method such as welding, or a detachable method such as bolt connection.

[0067] Reference Figures 10 to 11 In one embodiment, a support ring 110 corresponding to the baffle plate 800 is provided on the inner wall of the shell 100, and the position of the support ring 110 in the length direction of the shell 100 is set corresponding to the sub-fixing rod 720, and the inner diameters of the plurality of support rings 110 decrease step by step in the length direction of the shell 100; the outer diameters of the plurality of baffle plates 800 decrease step by step in the length direction of the shell 100, and the outer diameters of the baffle plates 800 are smaller than the inner diameters of the corresponding support rings 110.

[0068] In the aforementioned embodiment, the baffle 800 can be completely fixed by the fixing rod 700. In this embodiment, the fixing rod 700 is assisted by the abutment ring 110 on the shell 100 to fix the baffle 800, thereby improving the effect of fixing the baffle 800. In order to realize the installation of the baffle 800 at one end of the length direction of the shell 100, the inner diameter of the abutment ring 110 is gradually reduced in the length direction of the shell 100, and the outer diameter of the baffle 800 is gradually reduced in the length direction of the shell 100. When the baffle 800 is installed, it can pass through the abutment ring 110 of the previous sequence and form abutment with the corresponding abutment ring 110. The abutment ring 110 is not limited to a complete annular structure, and can also have a number of disconnection points in the circumferential direction. The final installation position of the baffle 800 is limited by the setting of the abutment ring 110, so no matter how the baffle 800 is fixed to the fixing rod 700, its final position will be accurate, which improves the fault tolerance of the installation process of the baffle 800.

[0069] In one embodiment, the abutment ring 110 has at least one disconnected notch in the circumferential direction of the housing 100 .

[0070] In this embodiment, by interrupting the abutment ring 110 in the circumferential direction, relative to the abutment ring 110 which is an integral structure, the abutment ring 110 can provide a certain deformation space in the circumferential direction while being able to support the deflector 800, thereby ensuring its position accuracy in the length direction of the shell 100.

[0071] In one embodiment, the heat exchanger with optimized mounting structure also includes a first gasket arranged in pair with the abutment ring 110, and the first gasket is arranged along the inner wall of the shell 100, wherein the first gasket is a metal spring gasket or a polymer gasket, and the first gasket is connected to the abutment ring 110 or the baffle 800.

[0072] In the above-mentioned embodiment, the first washer clamps the baffle 800 through the abutment ring 110 and the fixing rod 700. However, when the working temperature of the heat exchanger fluctuates greatly, the shrinkage and expansion of the abutment ring 110 may affect the stable clamping of the baffle 800. In this embodiment, by introducing the first washer, its elastic deformation is used to offset the abnormal deformation of the abutment ring 110. The first washer can be a conventional metal spring washer that uses its structural deformation to provide deformation capacity in the thickness direction; or it can be a polymer material ring with a wide operating temperature that uses its own material deformation to provide deformation capacity in the thickness direction.

[0073] In one embodiment, a plurality of second washers are further included, and the second washers are arranged corresponding to the step structure 730 .

[0074] In the aforementioned embodiment, the abnormal deformation of the abutment ring 110 is offset by the first gasket, while in the present embodiment, a second gasket is added to further provide elastic deformation space, so that the position setting of the baffle 800 can have greater adaptability.

[0075] In one embodiment, the outer diameter of the heat exchange tube 600 is 1.05 to 1.10 times the inner diameter of the second fixing hole 811 .

[0076] The outer diameter of the heat exchange tube 600 should not be consistent with the inner diameter of the second fixing hole 811. In this case, installation is difficult and there is no room for deformation. In this embodiment, the size limit between the two is used to provide deformation space and reduce overflow from the gap between the heat exchange tube 600 and the second fixing hole 811 during the operation of the heat exchanger.

[0077] In one embodiment, the outer periphery of the baffle 800 and the inner wall of the shell 100 are clearance-fitted.

[0078] In this embodiment, by setting a gap between the baffle plate 800 and the shell 100, that is, the outer periphery of the baffle plate 800 does not contact the inner wall of the shell 100, there is space for deformation, which provides space for the shell 100 or the baffle plate 800 to deform and avoids damage to the shell 100, the baffle plate 800 or the heat exchange tube 600 due to the mutual force generated between them.

[0079] In one embodiment, the fixing rod 700 is fixedly connected to the baffle plate 800 of the smallest size.

[0080] The fixing rod 700 plays a relatively important role in the process of driving and fixing the baffle 800. In the present embodiment, the fixing rod 700 can be fixed to a baffle 800, so the stabilizing effect of the fixing rod 700 itself and the stabilizing effect of pushing the minimum-sized baffle 800 to move (the possibility of accidentally flipping out the fixing rod 700 is eliminated) are both improved.

[0081] In one embodiment, the fixing rod 700 is divided into two parts in the length direction.

[0082] In this embodiment, the fixing rod 700 is set as a split structure to reduce the overall processing difficulty. Specifically, the fixing rod 700 may include multiple sub-fixing rods 720, and the sub-fixing rods 720 can be connected by threaded connection, sleeve connection or clamping.

[0083] The present invention also provides an installation method, which is applied to the heat exchanger with optimized installation structure, comprising:

[0084] S1, sequentially stacking a plurality of baffles 800 on the inner side surface of the first fixed tube sheet 200 to form a positioning body 080;

[0085] S2, connecting the alignment body 080 to one end of the shell 100 in the length direction;

[0086] S3, inserting all the fixing rods 700 and at least part of the heat exchange tubes 600 into the positioning body 080;

[0087] S4, installing the second fixed tube sheet 300 at one end of the shell 100 in the length direction;

[0088] S5. Complete the installation of all heat exchange tubes 600;

[0089] S6, installing the tube box 400 and the floating head cover assembly 500 at both ends of the shell 100 in the length direction and sealing the first fixed tube sheet 200 and the second fixed tube sheet 300;

[0090] In this embodiment, in step S1, a plurality of baffles 800 are sequentially overlapped on the inner side of the first fixed tube sheet 200 to form a positioning body 080. During this process, it can be verified whether the first mounting hole 210 on the first fixed tube sheet 200 and the third mounting hole 812 on the baffle 800 are aligned, and corresponding adjustments can be made; it can also be verified whether the first fixing hole 210 on the first fixed tube sheet 200 and the second fixing hole 811 on the baffle 800 are aligned. During the assembly process of the positioning body 080, some devices can be used to clamp the baffle 800 and the first fixed tube sheet 200 in the thickness direction, and the first fixed tube sheet 200 and the baffle 800 can be fixed to form the positioning body 080. In the present invention, the through hole formed by the overlap of the first mounting hole 210 and the third mounting hole 812 in the positioning body 080 is the heat exchange tube mounting hole, and the through hole formed by the overlap of the first fixing hole 210 and the second fixing hole 811 is the fixing rod mounting hole.

[0091] In step S2, the alignment body 080 is connected to one end of the shell 100 in the length direction to complete the preparation work for the installation of the fixing rod 700 and the heat exchange tube 600; during this process, the accurate alignment state of the first fixed tube sheet 200 and the baffle 800 will not change.

[0092] In step S3, all the fixing rods 700 and at least part of the heat exchange tubes 600 are inserted into the alignment body 080; in this step, first, all or part of the heat exchange tubes 600 can be installed synchronously with the fixing rods 700 (the synchronous installation of all the heat exchange tubes 600 is more efficient, but there is a problem of heavy operation weight); secondly, during the installation of the fixing rods 700, the end of the fixing rod 700 with the smallest diameter is inserted through the fixing rod installation hole of the alignment body 080, and the heat exchange tubes 600 are inserted through the heat exchange tube installation hole. During the process of the heat exchange tubes being inserted, the heat exchange tubes 600 will not encounter any resistance. During the insertion of the fixing rod 700, the outer diameters of the base rod 710 and the multiple sub-fixing rods 720 decrease step by step, and the inner diameters of the second fixing holes 811 on the baffle 800 are respectively consistent with the outer diameters of the corresponding sub-fixing rods 720. When the fixing rod 700 is inserted from the fixing rod installation hole of the alignment body 080, the multiple step structures 730 on the fixing rod 700 will sequentially interact with the corresponding baffles 800, that is, the fixing rod 700 pushes the baffles 800 out sequentially. In the above process, the fixing rod 700 and the heat exchange tube 600 only need to be aligned with the alignment body 080, and in the process of completing the installation of the heat exchange tube 600, the fixing rod 700 and the baffle 800, it is only necessary to push the fixing rod 700 and the heat exchange tube 600, and no other alignment process is required.

[0093] In step S4, the second fixed tube sheet 300 is installed at one end of the shell 100 in the length direction, completing the main body installation process of the heat exchanger.

[0094] In step S5 , all the heat exchange tubes 600 are installed, that is, both ends of the length direction of all the heat exchange tubes 600 are fixed to the first fixed tube sheet 200 and the second fixed tube sheet 300 respectively.

[0095] In step S6, the tube box 400 and the floating head cover assembly 500 are installed at both ends of the shell 100 in the length direction and the first fixed tube sheet 200 and the second fixed tube sheet 300 are closed to complete the installation process of the heat exchanger.

[0096] Through the above installation method, it is possible to check in advance whether all the baffles 800 and the hole structures at corresponding positions on the first fixed tube sheet 200 are aligned; and a large number of alignment operations are avoided.

[0097] In one embodiment, the steps of S2 and S3 include:

[0098] The second fixed tube sheet 300 is connected to one end of the shell 100 in the length direction, wherein the distance between the second fixed tube sheet 300 and the first fixed tube sheet 200 in the length direction of the shell 100 is 1 meter to 3 meters.

[0099] In this embodiment, by flexibly setting the installation method of the second fixed tube sheet 300, the auxiliary support fixing rod 700 and the heat exchange tube 600 are installed, and it is also possible to verify whether each second installation hole 310 on the second fixed tube sheet 300 can be installed correctly. In the process of connecting the installed second fixed tube sheet 300 to one end of the shell 100 in the length direction, some auxiliary tooling can be used. For example, if the installation methods of the first fixed tube sheet 200 and the second fixed tube sheet 300 on the shell 100 are both flange connections, then the first fixed tube sheet 200 and the second fixed tube sheet 300 can be simultaneously fixed to one end of the shell 100 in the length direction through an auxiliary fixing shaft.

[0100] In summary, the heat exchanger with optimized mounting structure and the mounting method thereof provided by the present invention, the characteristics of the outer diameters of the base rod 710 and the plurality of sub-fixing rods 720 decreasing step by step, the arrangement of the sub-fixing rods 720 on the baffle plates 800 corresponding to the fixing rods 700, and the inner diameters of the second fixing holes 811 on the baffle plates 800 being respectively consistent with the outer diameters of the corresponding sub-fixing rods 720, can realize the action of the fixing rods 700 pushing the baffle plates 800 one by one. Multiple baffle plates 800 are sequentially superimposed on the inner side surface of the first fixed tube sheet 200 to form a positioning body 080. In this process, it can be verified whether the first mounting hole 210 on the first fixed tube sheet 200 is aligned with the third mounting hole 812 on the baffle plate 800, and corresponding adjustments can be made; it can also be verified whether the first fixing hole 210 on the first fixed tube sheet 200 is aligned with the second fixing hole 811 on the baffle plate 800. In the process of installing the heat exchange tube 600 , the fixing rod 700 and the baffle 800 , it is only necessary to push the fixing rod 700 and the heat exchange tube 600 , and no other alignment process is required.

[0101] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat exchanger with optimized mounting structure, characterized in that: include: A cylindrical shell (100) is provided with a first fixed tube sheet (200) and a second fixed tube sheet (300) at both ends in the length direction; A tube box (400) is arranged at one end of the shell (100) in the length direction and seals the first fixed tube sheet (200); A floating head cover assembly (500) is disposed at the other end of the shell (100) in the length direction and seals the second fixed tube sheet (300); A plurality of heat exchange tubes (600) are fixed between the first fixed tube sheet (200) and the second fixed tube sheet (300), and both ends in the length direction are respectively connected to the tube box (400) and the floating head cover assembly (500), wherein the first fixed tube sheet (200) and the second fixed tube sheet (300) are respectively provided with a first mounting hole (220) and a second mounting hole (310) corresponding to the heat exchange tubes (600); a plurality of fixed rods (700), the fixed rods (700) comprising a base rod (710) and a plurality of sub-fixed rods (720) connected in sequence, the outer diameters of the base rod (710) and the plurality of sub-fixed rods (720) being gradually reduced to form a plurality of step structures (730), and the base rod (710) being detachably connected to the first fixed tube sheet (200); A plurality of baffles (800) are arranged at intervals on the shell (100); the baffles (800) are circular and are divided into a solid portion (810) and a hollow window portion (820) on the surface; the solid portion (810) is provided with a plurality of second fixing holes (811) corresponding to the plurality of fixing rods (700); the solid portion (810) is provided with a third mounting hole (812) corresponding to the heat exchange tube (600); wherein the plurality of baffles (800) are respectively arranged corresponding to the plurality of sub-fixing rods (720) on the fixing rod (700), and the inner diameter of the second fixing hole (811) on each of the baffles (800) is respectively consistent with the outer diameter of the corresponding sub-fixing rod (720).

2. The heat exchanger with optimized mounting structure according to claim 1, characterized in that: The sub-fixing rod (720) is detachably provided with an elastic snap-fit ​​structure corresponding to the step structure (730), wherein the distance between the elastic snap-fit ​​structure and the step structure (730) is the thickness dimension of the baffle (800), and wherein the deformation direction of the elastic snap-fit ​​structure is the radial direction of the sub-fixing rod (720).

3. The heat exchanger with optimized mounting structure according to claim 1, characterized in that: The fixing rod (700) is connected between the first fixing tube sheet (200) and the second fixing tube sheet (300).

4. The heat exchanger with optimized mounting structure according to claim 1, characterized in that: An abutment ring (110) corresponding to the baffle plate (800) is arranged on the inner wall of the shell (100); the position of the abutment ring (110) in the length direction of the shell (100) is set to correspond to the sub-fixing rod (720); the inner diameters of the plurality of abutment rings (110) decrease step by step in the length direction of the shell (100); the outer diameters of the plurality of baffle plates (800) decrease step by step in the length direction of the shell (100), and the outer diameter of the baffle plate (800) is smaller than the inner diameter of the corresponding abutment ring (110).

5. The heat exchanger with optimized mounting structure according to claim 4, characterized in that: The heat exchanger with optimized mounting structure also includes a first gasket arranged in pair with the abutment ring (110), wherein the first gasket is arranged along the inner wall of the shell (100), wherein the first gasket is a metal spring gasket or a polymer gasket, and the first gasket is connected to the abutment ring (110) or the baffle (800).

6. The heat exchanger with optimized mounting structure according to claim 5, characterized in that: It also includes a plurality of second washers, wherein the second washers are arranged corresponding to the step structure (730).

7. The heat exchanger with optimized mounting structure according to claim 1, characterized in that: The outer diameter of the heat exchange tube (600) is 1.05 to 1.10 times the inner diameter of the second fixing hole (811).

8. The heat exchanger with optimized mounting structure according to claim 1, characterized in that: The outer periphery of the baffle (800) and the inner wall of the shell (100) are clearance-matched.

9. An installation method, applied to the heat exchanger with optimized installation structure as claimed in any one of claims 1 to 8, characterized in that: include: S1, sequentially stacking a plurality of baffles (800) on the inner side surface of a first fixed tube sheet (200) to form a positioning body (080); S2, connecting the alignment body (080) to one end of the shell (100) in the length direction; S3, inserting all the fixing rods (700) and at least part of the heat exchange tubes (600) into the positioning body (080); S4, installing the second fixed tube sheet (300) at one end of the shell (100) in the length direction; S5. Complete the installation of all heat exchange tubes (600); S6. Install the tube box (400) and the floating head cover assembly (500) at both ends of the shell (100) in the length direction and seal the first fixed tube sheet (200) and the second fixed tube sheet (300).

10. The installation method according to claim 9, characterized in that: Include between the step of S2 and the step of S3: The second fixed tube sheet (300) is connected to one end of the shell (100) in the length direction, wherein the distance between the second fixed tube sheet (300) and the first fixed tube sheet (200) in the length direction of the shell (100) is 1 meter to 3 meters.

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