Integral tube box and heat exchanger

Abstract

The utility model discloses an integral tube box and a heat exchanger. The integral tube box comprises a box body, a plurality of first plugging pieces and a plurality of second plugging pieces, the box body comprises a first wall face and a second wall face which are oppositely arranged, a plurality of first holes are machined in the first wall face, a plurality of second holes are machined in the second wall face, an inner cavity is machined between the first wall face and the second wall face, and the first plugging pieces and the second plugging pieces are arranged in the inner cavity. The box body comprises an inner cavity, at least one pass dividing plate is arranged in the inner cavity, a plurality of first blocking pieces are installed in a plurality of first holes respectively, a plurality of second blocking pieces are installed in a plurality of second holes respectively, the box body further comprises a third wall face located between the first wall face and the second wall face, and a plurality of third holes are formed in the third wall face. The pass plate has the advantages of being high in impact bearing capacity and not prone to deformation, and the problem that an existing small-diameter heat exchanger is difficult to machine is solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically an integrated tube box and heat exchanger. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers are widely used as heaters, coolers, condensers, evaporators, and reboilers. A shell-and-tube heat exchanger is a type of heat exchanger that allows two fluids at different temperatures to flow in a space separated by a wall. Heat exchange occurs through conduction at the wall surface and convection between the fluids. Shell-and-tube heat exchangers include shell-and-tube, double-tube, and other types.

[0003] To improve heat exchange efficiency, indirect heat exchangers typically incorporate pass plates on the tube side to increase the number of passes. Common pass plates are made by welding metal plates into the tube box. However, high tube-side pressures or high medium flow rates can cause significant impact on the pass plates, leading to deformation. Furthermore, for smaller diameter heat exchangers, traditional welding methods for pass plates are extremely difficult and impractical in engineering. Utility Model Content

[0004] To overcome the deficiencies in the prior art, this utility model provides an integrated tube box and heat exchanger to solve the above-mentioned problems.

[0005] This application discloses an integral pipe box, including a box body, a plurality of first sealing members and a plurality of second sealing members. The box body includes a first wall and a second wall that are disposed opposite to each other. A plurality of first holes are machined on the first wall, and a plurality of second holes are machined on the second wall. An inner cavity is machined between the first wall and the second wall. At least one dividing plate is disposed in the inner cavity. The plurality of first sealing members are respectively installed in the plurality of first holes, and the plurality of second sealing members are respectively installed in the plurality of second holes. The box body also includes a third wall located between the first wall and the second wall, and the third wall has a plurality of third holes.

[0006] Specifically, the multiple first holes on the first wall and the multiple second holes on the second wall are staggered one by one.

[0007] Specifically, the inner cavity is provided with multiple partition plates.

[0008] Specifically, the first sealing element includes a screw plug and a washer, the screw plug being threaded into the first hole, and the washer being disposed between the screw plug and the first wall surface.

[0009] Specifically, a first flange is connected to a first hole at one end of the first wall surface, and a second flange is connected to a first hole at the other end of the first wall surface.

[0010] Specifically, the first wall surface is provided with a first threaded hole at each end, and the second wall surface is provided with a second threaded hole at each end.

[0011] This application also discloses a heat exchanger, including a first side plate, a second side plate, and at least one integral tube box as described in this embodiment, wherein one end of the integral tube box is connected to the first side plate, and the other end of the integral tube box is connected to the second side plate.

[0012] Specifically, the heat exchanger includes two integral tube boxes, one of which is connected to the first end of the first side plate and the second side plate, and the other integral tube box is connected to the second end of the first side plate and the second side plate.

[0013] This utility model has at least the following beneficial effects: The integral tube box of this embodiment is machined from an integral steel block. The inside of the steel block is machined by a milling machine and drilled and tapped by a drilling machine to produce the inner cavity and the partition plate, so that the tube box and the partition plate are integrated. The partition plate prepared by this method has the advantages of strong impact resistance and not easy deformation. Since no welding is used in the whole process, the problem of difficult processing of small diameter heat exchangers is solved. At the same time, the partition plate does not need to undergo post-weld heat treatment, saving production costs.

[0014] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the integral pipe box in an embodiment of this utility model;

[0017] Figure 2 yes Figure 1 Sectional view at point AA;

[0018] Figure 3 This is a bottom view of the integral pipe box in an embodiment of this utility model;

[0019] Figure 4 This is a rear view of the integral pipe box in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the heat exchanger in an embodiment of this utility model;

[0021] Figure 6 yes Figure 5 Sectional view at point BB.

[0022] The reference numerals in the above figures are as follows: 1. Box body; 11. First wall surface; 111. First hole; 112. First threaded hole; 12. Second wall surface; 121. Second hole; 122. Second threaded hole; 13. Third wall surface; 131. Third hole; 2. First sealing element; 21. Plug; 22. Washer; 3. Second sealing element; 4. First flange; 5. Second flange; 6. First side plate; 7. Second side plate; 8. Heat exchange tube. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "fixing," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0027] Furthermore, the terms "first" and "second" are used only to distinguish between different terms in description and do not have any special meaning.

[0028] Combination Figures 1 to 6 As shown, the integral tube box of this embodiment includes: a box body 1, a plurality of first sealing elements 2, and a plurality of second sealing elements 3. The box body 1 includes a first wall 11 and a second wall 12 disposed opposite to each other. A plurality of first holes 111 are machined into the first wall 11, and a plurality of second holes 121 are machined into the second wall 12. An inner cavity is machined between the first wall 11 and the second wall 12, and at least one partition plate is disposed in the inner cavity to divide the inner cavity into multiple flow paths. A first sealing element 2 is installed in each first hole 111, and a second sealing element 3 is installed in each second hole 121. The box body 1 also includes a third wall 13, on which a plurality of third holes 131 are provided. The third holes 131 are used to connect the inner cavity of the box body 1 to the heat exchange tubes 8 of the heat exchanger.

[0029] Specifically, in this embodiment, the housing 1 is machined from a single piece of steel. The steel block is cubic in shape, with the first wall 11 and the second wall 12 positioned opposite each other on both sides of the steel block's width direction. The third wall 13 is located on the side of the steel block's thickness direction facing the heat exchange tube 8. The two ends of the partition plate are respectively connected to the inner sides of the first wall 11 and the second wall 12 to divide the inner cavity into several non-communicating parts.

[0030] like Figure 2 As shown, the plurality of first holes 111 on the first wall surface 11 and the plurality of second holes 121 on the second wall surface 12 are staggered. In other words, the axis of the first hole 111 is misaligned with the axis of the second hole 121, and they do not coincide. This improves the strength of the housing 1 structure and also allows for a larger stroke range when the milling cutter removes material between the first wall surface 11 and the second wall surface 12 during machining, ensuring that all the material inside the steel block (except for the dividing plate portion) can be milled.

[0031] The integrated tube box in this embodiment can be used as both an inlet / outlet tube box (meaning a tube box used for allowing the medium to enter or leave the heat exchanger, such as...) Figure 5The tube box on the left side of the heat exchanger can be used as a return tube box (referring to a tube box located at the other end of the heat exchanger opposite to the inlet and outlet tube boxes, such as...). Figure 5 The heat exchanger in this embodiment uses the tube box on the right side. In other words, the heat exchanger includes two integral tube boxes, one connected to the first end of the first side plate 6 and the second side plate 7 as the inlet and outlet tube boxes, and the other connected to the second end of the first side plate 6 and the second side plate 7 as the return tube box. In this embodiment, the number of branch plates in the inlet and outlet tube boxes is one more than the number of branch plates in the return tube box.

[0032] like Figure 6 As shown, the first sealing element 2 in this embodiment includes a screw plug 21 and a washer 22. The screw plug 21 is used for internal thread connection within the first hole 111, and the washer 22 is disposed between the screw plug 21 and the first wall surface 11, which improves the sealing effect of the first sealing element 2 on the first hole 111, allowing the medium on the wall surface to flow out from the first hole 111. The structure of the second sealing element 3 is largely the same as that of the first sealing element 2.

[0033] Combination Figure 5 and Figure 6 As shown, in this embodiment, a first flange 4 is connected to the first hole 111 on the outermost side of one end of the first wall 11, and a second flange 5 is connected to the first hole 111 on the outermost side of the other end of the first wall 11. The first flange 4 and the second flange 5 are respectively connected to the inlet pipe and outlet pipe of the medium to allow the medium to enter and exit the heat exchanger.

[0034] Continue to refer to Figure 5 and Figure 6 As shown, the first wall surface 11 has first threaded holes 112 at both ends, and the second wall surface 12 has second threaded holes 122 at both ends. The first end of the first wall surface 11 is connected to the first side plate 6 of the heat exchanger through the first threaded hole 112, and the second end of the first wall surface 11 is connected to the second side plate 7 of the heat exchanger through the first threaded hole 112. The first end of the second wall surface 12 is connected to the first side plate 6 of the heat exchanger through the second threaded hole 122, and the second end of the second wall surface 12 is connected to the second side plate 7 of the heat exchanger through the second threaded hole 122. In this way, the installation and fixing of the integral tube box can be realized, and the heat exchanger of this embodiment can be obtained.

[0035] The machining process of the integral tube box in this embodiment is as follows: The steel block (carbon steel or alloy steel) is placed as a whole on the machining center to machine the surrounding planes; the machining center switches to drilling mode to drill large holes on the first wall surface 11 and the second wall surface 12 respectively to obtain the first hole 111 and the second hole 121; the machining center switches to milling cutter mode and enters the material from the first hole 111 on the first wall surface 11 and the second hole 121 on the second wall surface 12 respectively, hollowing out the material according to the drawing to form an inner cavity. During machining, care should be taken not to penetrate the middle part of the material to form a partition plate; the machining center switches to drilling mode and drills the third hole 131 on the third wall surface 13 for connection with the heat exchange tube 8; the tube hole expansion groove is machined; and the first hole 111 and the second hole 121 are tapped to install the screw plug 21.

[0036] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. An integral pipe box, characterized in that, The device includes a housing, multiple first sealing elements, and multiple second sealing elements. The housing includes a first wall and a second wall disposed opposite to each other. Multiple first holes are machined on the first wall, and multiple second holes are machined on the second wall. An inner cavity is machined between the first wall and the second wall. At least one partition plate is disposed in the inner cavity. The multiple first sealing elements are respectively installed in the multiple first holes, and the multiple second sealing elements are respectively installed in the multiple second holes. The housing also includes a third wall located between the first wall and the second wall, and the third wall has multiple third holes.

2. The integral pipe box according to claim 1, characterized in that, The multiple first holes on the first wall and the multiple second holes on the second wall are staggered one by one.

3. The integral pipe box according to claim 1, characterized in that, The inner cavity is equipped with multiple partition plates.

4. The integral pipe box according to claim 1, characterized in that, The first sealing component includes a screw plug and a washer. The screw plug is used for threaded connection with the first hole, and the washer is disposed between the screw plug and the first wall surface.

5. The integral pipe box according to claim 1, characterized in that, A first flange is connected to a first hole at one end of the first wall surface, and a second flange is connected to a first hole at the other end of the first wall surface.

6. The integral pipe box according to claim 1, characterized in that, The first wall surface has a first threaded hole at each end, and the second wall surface has a second threaded hole at each end.

7. A heat exchanger, characterized in that, It includes a first side plate, a second side plate, and at least one integral pipe box as described in any one of claims 1 to 6, wherein one end of the integral pipe box is connected to the first side plate, and the other end of the integral pipe box is connected to the second side plate.

8. The heat exchanger according to claim 7, characterized in that, The heat exchanger includes two integral tube boxes, one of which is connected to the first end of the first side plate and the second side plate, and the other integral tube box is connected to the second end of the first side plate and the second side plate.

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