CN215337870U - Shell and tube heat exchanger and heat exchanger shell thereof - Google Patents

Abstract

The utility model relates to the field of heat exchangers, in particular to a shell-and-tube heat exchanger and a heat exchanger shell thereof. A heat exchanger shell comprises a cylinder body and two end plates which are hermetically connected to two end parts of the cylinder body; the edge of the end plate exceeds or is flush with the opening edge of the end part of the cylinder body, the lower end part of the end plate is turned outwards to form a lower bending part, and the lower bending part is used as a support leg. The end plate in the scheme directly forms the support leg by bending, and the support leg connected with the cylinder body is eliminated; the structure is simplified, and the cost is reduced.

Description

Shell and tube heat exchanger and heat exchanger shell thereof

Technical Field

The utility model relates to the field of heat exchangers, in particular to a shell-and-tube heat exchanger and a heat exchanger shell thereof.

Background

Shell and tube heat exchangers are heat exchangers constructed by a set of tube bundles or coils contained within a shell. Two media for transferring heat, one is in the tube, the other is in the shell of the tube, and the heat is transferred through the tube wall, and the tube is generally horizontal. The heat pump air conditioner is mainly used for host equipment in the air conditioner heat pump industry, and can be used as an evaporator or a condenser. The heat exchange medium is typically water and a refrigerant medium (refrigerant). Compared with other heat exchangers (a sleeve heat exchanger, a plate heat exchanger, a high-efficiency tank heat exchanger and the like), the shell and tube heat exchanger has small water resistance and cold medium resistance and obvious price advantage, and is widely applied to water-cooled screw units, water source heat pump units, water-cooled cabinets, industrial water chilling units, household villa units, module units and the like.

The shell-and-tube heat exchanger shell of the prior art comprises a cylindrical barrel and two end plates which are hermetically connected to two ends of the barrel. In the horizontal shell-and-tube heat exchanger, two support legs are welded on the outer wall of the cylindrical barrel, so that the heat exchanger shell can be placed on a supporting surface. Such a heat exchanger shell may refer to the structure shown in the attached drawings of the chinese utility model patent with publication number "CN 203286814U". As described above, such a shell-and-tube heat exchanger needs to have two support legs welded to the outer wall of the cylindrical barrel, which results in a more complex structure, a more complicated processing procedure, and a relatively higher cost.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide a heat exchanger casing, in which the end plate directly forms the support legs by bending, and the support legs connected to the cylinder are eliminated; the structure is simplified, and the cost is reduced.

A second object of the present invention is to provide a shell and tube heat exchanger having the above heat exchanger shell.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a heat exchanger shell comprises a cylinder body and two end plates which are hermetically connected to two end parts of the cylinder body; the method is characterized in that: the edge of the end plate exceeds or is flush with the opening edge of the end part of the cylinder body, the lower end part of the end plate is turned outwards to form a lower bending part, and the lower bending part is used as a support leg.

The utility model adopts the technical scheme, which relates to a heat exchanger shell, comprising a cylinder and two end plates; the two end plates are respectively connected to the two ends of the cylinder body in a sealing way. Different from the existing heat exchanger shell, the lower end part of the end plate in the scheme is outwards turned to form a lower bending part, namely the end plate in the scheme directly forms a support leg through bending, and the support leg connected with the cylinder is cancelled; the structure is simplified, and the cost is reduced.

Preferably, the edge of the end plate is greater than or equal to the opening edge of the end of the cylinder in any radial direction. Through the limitation, the edge of the end plate in the technical scheme can fully cover the opening at the end part of the cylinder body, so that the sealing performance of the cylinder body is ensured.

Preferably, the upper end portion of the end plate is folded outwards to form an upper bent portion. The scheme forms an upper bending part above the end plate, and the upper bending part can be used for connecting other components, so that the components can be connected and fixed on the heat exchanger shell.

Preferably, the lower bending part and/or the upper bending part of the end plate is provided with an installation fixing hole. The heat exchanger shell is arranged on a supporting surface (ground), or other components are connected and fixed on the heat exchanger shell; all can adopt the solid subassembly of spiral shell (bolt, nut combination) to pass the installation fixed orifices and connect fixedly.

Preferably, the end plate is formed by bending a whole plate, and the opening edge of the end part of the cylinder is attached to the end plate and is welded and fixed with the end plate in a sealing way. This technical scheme has injectd the end plate and has adopted the panel beating preparation to obtain, bends through the panel beating and can obtain down the portion of bending and/or go up the portion of bending, and the end plate of making by the panel beating adopts direct welded connection on the barrel tip, has wholly simplified the connection structure of end plate and barrel greatly to and the shaping structure of the portion of bending down on the end plate and the portion of bending upward.

A shell and tube heat exchanger includes a heat exchanger shell; the heat exchanger housing is a heat exchanger housing as described above.

Preferably, the cylinder is provided with a liquid inlet and a liquid outlet which are communicated with the inner cavity of the cylinder; a tube pass assembly is arranged in the inner cavity of the cylinder and comprises a tube bundle bracket, a copper tube arranged on the tube bundle bracket, and a distributor and a collector which are respectively connected with the end of the copper tube; the distributor and collector are disposed on an end plate. In the scheme, the inner cavity of the cylinder body is used for storing water; the refrigerant circulates in the copper pipe, and the heat exchange between the refrigerant and water is realized to achieve the purpose of heat exchange. On the basis, the assembly scheme of the distributor and the collector in the scheme can adopt one of the following two schemes:

in a first variant, the distributor and the collector are both fixed to the end plate by means of a sealing weld. The scheme is favorable for simplifying the connection structure, reducing parts and reducing the processing cost; on the other hand, the tightness of the connecting positions of the distributor, the collector and the end plate can be ensured.

In the second scheme, the distributor and the collector are connected to the end plate through a screw fixing part; the distributor and the collector penetrate through the end plate, the screwing component is connected to the distributor and the collector on the outer side of the end plate, and a sealing ring is arranged between the screwing component and the outer side wall of the end plate. The sealing washer setting is at the end plate inside wall to traditional scheme, but above-mentioned scheme has adopted the scheme of end plate welding at barrel tip, can produce a large amount of heats when end plate and barrel tip welding are considered to this scheme, still set up the sealing washer in the end plate inside wall if this scheme, then must install the sealing washer earlier, and the heat during welding melts easily or makes the sealing washer warp, influences its leakproofness. Therefore, the sealing ring is arranged between the screw fixing part and the outer side wall of the end plate, the end plate is welded on the end part of the cylinder body firstly during installation, and then the sealing ring is installed, so that the problems can not be caused.

Drawings

Fig. 1 is a first schematic view of a heat exchanger housing according to embodiment 1.

Fig. 2 is a second schematic view of the heat exchanger housing structure described in embodiment 1.

Fig. 3 is a partially cut-away view of the shell-and-tube heat exchanger described in example 2.

Fig. 4 is a schematic view of a new welded structure of the collector.

FIG. 5 is a schematic view of the distributor and collector using a screw connection.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1:

as shown in FIGS. 1-2, the embodiment relates to a heat exchanger shell, which comprises a cylinder 1 and two end plates 2 hermetically connected to two ends of the cylinder 1. In any radial direction, the edge of the end plate 2 is larger than or equal to the opening edge of the end part of the cylinder 1; namely, the edge of the end plate 2 exceeds or is flush with the edge of the opening at the end of the cylinder body 1, so that the edge of the end plate 2 can completely cover the opening at the end of the cylinder body 1, thereby ensuring the sealing performance.

In a further embodiment, the upper end of the end plate 2 is folded outward to form an upper folded part 21, the lower end of the end plate 2 is folded outward to form a lower folded part 22, and the lower folded part 22 serves as a support leg. The upper bent part 21 can be used for connecting other components, so that the components can be connected and fixed on the heat exchanger shell. The lower bending part 22 and/or the upper bending part 21 of the end plate 2 are provided with mounting fixing holes 23. Whether the heat exchanger shell is installed on a supporting surface (ground) or other components are fixedly connected on the heat exchanger shell. All can adopt the solid subassembly of spiral shell (bolt, nut combination) to pass installation fixed orifices 23 and connect fixedly.

In a specific embodiment, the end plate 2 is formed by bending a whole plate, and the opening edge of the end part of the cylinder 1 is attached to the end plate 2 and is welded and fixed with the end plate in a sealing way. This technical scheme has injectd end plate 2 and has adopted the panel beating preparation to obtain, bends through the panel beating and can obtain down the portion of bending 22 and/or go up the portion of bending 21, and the end plate 2 of making by the panel beating adopts direct welded connection on barrel 1 tip, has wholly simplified the connection structure of end plate 2 with barrel 1 greatly to and the shaping structure of the portion of bending 22 and the portion of bending 21 down on the end plate 2.

In summary, this embodiment relates to a heat exchanger shell comprising a cylinder 1 and two end plates 2. The two end plates 2 are respectively connected to the two ends of the cylinder 1 in a sealing way. Different from the existing heat exchanger shell, the lower end part of the end plate 2 in the scheme is turned outwards to form a lower bending part 22, namely the end plate 2 in the scheme directly forms a support leg through bending, and the support leg connected to the cylinder body 1 is eliminated; the structure is simplified, and the cost is reduced.

Example 2:

as shown in fig. 3-5, the present embodiment relates to a shell and tube heat exchanger including a heat exchanger shell. The heat exchanger housing is a heat exchanger housing as described in example 1. The cylinder body 1 is provided with a liquid inlet 11 and a liquid outlet 12 which are communicated with the inner cavity of the cylinder body. The tube side assembly is arranged in the inner cavity of the barrel 1 and comprises a tube bundle support 31, a copper tube 32 arranged on the tube bundle support 31, and a distributor 33 and a collector 34 which are respectively connected with the end parts of the copper tube 32. The distributor 33 and the collector 34 are provided on the end plate 2. In the scheme, the inner cavity of the cylinder body 1 is used for storing water. The inside of the copper pipe 32 is circulated with a refrigerant, and the heat exchange between the refrigerant and water is achieved.

On the basis, the assembly scheme of the distributor 33 and the collector 34 in the scheme can adopt one of the following two schemes:

in the first variant, the distributor 33 and the collector 34 are both fixed to the end plate 2 by means of a sealed weld. This scheme is favorable to simplifying connection structure on the one hand, reduces spare part, reduces the processing cost. On the other hand, the tightness of the connection position of the distributor 33 and the collector 34 with the end plate 2 can be ensured.

As shown in fig. 1, the distributor 33 and the collector 34 are each a single piece, welded directly to the end plate 2.

As shown in fig. 4, the distributor 33 is a single piece welded directly to the end plate 2; and the collector 34 comprises a collecting pipe 341 and a collecting tray 342. Wherein the collection tray 342 comprises a stamped tray of sheet material. The tray body comprises a bottom surface part and a side wall part arranged along the edge of the bottom surface part. A plurality of interfaces 343 for respectively connecting with a plurality of copper pipes 32 are provided on the bottom surface of the tray body. One end of the collecting pipe 341 is connected to the opening of the side wall part of the tray body, the collecting pipe 341 is a reducer pipe, the caliber of the inner end of the reducer pipe is larger than that of the outer end, the reducer pipe penetrates through the end plate 2, the external connecting pipe 37 is connected to the outer end part of the reducer pipe, and the inner end part of the reducer pipe is connected to the opening of the collecting tray 342. The reducer pipe comprises a straight pipe section and a reducer section positioned on the inner side of the straight pipe section, wherein the straight pipe section of the reducer pipe penetrates through the end plate 2, and the outer wall of the reducer pipe is welded with the end plate 2 in a sealing mode. The above-described technical solution relates to the collector 34, which divides the collector 34 into a collecting tray 342 and a collecting pipe 341 connected to the collecting tray 342, compared to the conventional integrally formed collector 34. The collection tray 342 and the collection tube 341 are manufactured separately, which facilitates the simplified manufacturing process, and the collection tray 342 can be obtained by only punching a plate material as described above. On the basis, the collecting tray 342 and the collecting pipe 341 can be made of different materials respectively, so that the consumption of precious metals is reduced. For example, the collection tray 342 may still be made of red copper, while the collection tube 341 may be made of steel. Thus, the material cost is saved, and the welding difficulty between the collecting pipe 341 and the end plate 2 is reduced.

Second alternative as shown in figures 2 and 5, the distributor 33 and collector 34 are connected to the end plate 2 by means of screw elements 35. The distributor 33 and the collector 34 penetrate through the end plate 2, the screwing part 35 is connected to the distributor 33 and the collector 34 on the outer side of the end plate 2, and a sealing ring 36 is arranged between the screwing part 35 and the outer side wall of the end plate 2. According to the traditional scheme, the sealing ring 36 is arranged on the inner side wall of the end plate 2, but the scheme that the end plate 2 is welded at the end part of the cylinder body 1 is adopted, the scheme considers that a large amount of heat is generated when the end plate 2 is welded with the end part of the cylinder body 1, if the sealing ring 36 is arranged on the inner side wall of the end plate 2 in the scheme, the sealing ring 36 must be installed firstly, and the heat during welding is easy to melt or deform the sealing ring 36 to influence the sealing performance of the sealing ring. Therefore, this solution provides the seal ring 36 between the screw member 35 and the outer side wall of the end plate 2, and the end plate 2 is welded to the end of the cylinder 1 before the seal ring 36 is installed, so that the above-mentioned problem does not occur.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (9)

1. A heat exchanger shell comprises a cylinder body (1) and two end plates (2) which are hermetically connected to two end parts of the cylinder body (1); the method is characterized in that: the edge of the end plate (2) exceeds or is flush with the opening edge of the end part of the cylinder body (1), the lower end part of the end plate (2) is turned outwards to form a lower bending part (22), and the lower bending part (22) is used as a supporting leg.

2. A heat exchanger housing according to claim 1, wherein: in any radial direction, the edge of the end plate (2) is larger than or equal to the opening edge of the end part of the cylinder body (1).

3. A heat exchanger housing according to claim 2, wherein: the upper end part of the end plate (2) is turned outwards to form an upper bending part (21).

4. A heat exchanger housing according to claim 3, wherein: and the lower bending part (22) and/or the upper bending part (21) of the end plate (2) are/is provided with an installation fixing hole (23).

5. A heat exchanger housing according to claim 1, wherein: the end plate (2) is formed by bending a whole plate, and the opening edge of the end part of the cylinder body (1) is attached to the end plate (2) and is welded and fixed with the end plate in a sealing way.

6. A shell and tube heat exchanger includes a heat exchanger shell; the method is characterized in that: the heat exchanger housing is according to any one of claims 1-5.

7. A shell and tube heat exchanger as claimed in claim 6, wherein: a liquid inlet (11) and a liquid outlet (12) which are communicated with the inner cavity of the cylinder body (1) are arranged on the cylinder body (1); a tube pass assembly is arranged in the inner cavity of the barrel (1), and comprises a tube bundle bracket (31), a copper tube (32) arranged on the tube bundle bracket (31), and a distributor (33) and a collector (34) which are respectively connected with the end part of the copper tube (32); the distributor (33) and the collector (34) are arranged on the end plate (2).

8. A shell and tube heat exchanger as claimed in claim 7, wherein: the distributor (33) and the collector (34) are hermetically welded and fixed on the end plate (2).

9. A shell and tube heat exchanger as claimed in claim 7, wherein: the distributor (33) and the collector (34) are connected to the end plate (2) through a screw fixing part (35); the distributor (33) and the collector (34) penetrate through the end plate (2), the screwing component (35) is connected to the distributor (33) and the collector (34) on the outer side of the end plate (2), and a sealing ring (36) is arranged between the screwing component (35) and the outer side wall of the end plate (2).

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