Marine plate heat exchanger

Abstract

The utility model discloses a marine plate heat exchanger which comprises a plurality of heat transfer plates, medium flow channels are formed between adjacent heat transfer plates, edge grooves are formed in the edges of one side faces of the heat transfer plates, edge protrusions are formed in the edge grooves and located on the other sides of the heat transfer plates, and edge sealing gaskets are arranged in the edge grooves. At least one auxiliary fastening bolt hole is formed in the middle area of the heat transfer plate, an annular groove is formed in the peripheral side of the auxiliary fastening bolt hole, an annular protrusion is formed in the position, on the other side of the heat transfer plate, of the annular groove, and an annular sealing gasket is arranged in the annular groove. The multiple heat transfer plates are fastened through auxiliary fastening bolts arranged in the auxiliary fastening bolt holes in a penetrating mode. The auxiliary fastening bolt holes are formed in the middle areas of the heat transfer plates, the heat transfer plates are fastened through the auxiliary fastening bolts, even if the heat transfer plates are large and the distance between the clamping bolts is long, auxiliary fastening can be conducted through the auxiliary fastening bolts, and therefore the anti-seismic capacity and the pressure bearing capacity are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plate heat exchanger technical field, concretely relates to a marine plate heat exchanger. BACKGROUND

[0002] Plate heat exchanger is by a series of have certain corrugated shape's heat transfer sheet stack and form a new type of high -efficient heat exchanger, adjacent heat transfer sheet between form rectangular medium over -flow channel, through heat transfer sheet carries out heat exchange, has heat exchange efficiency high, heat loss is small, compact structure is light and clever, occupies area is small, the installation cleaning is convenient, application is widespread, service life is long etc.

[0003] In the ship industry, the ship driving process is larger, the impact occurs, the requirement of the heat transfer core's shock resistance, pressure resistance is improved. The traditional plate heat exchanger uses two clamping plates to clamp the heat transfer core (a series of heat transfer sheet stack assembly), and the clamping plate is fastened by clamping bolt, so the clamping bolt is essentially located on the periphery of the heat transfer sheet. If the area of the heat transfer sheet is large, the distance of the clamping bolt is far away, which will cause the plate heat exchanger to leak (although the probability is very small, but the harm is very great), and affect the safety of ship transportation. Therefore, the plate heat exchanger with better safety and better performance is more suitable for ship use. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a marine plate heat exchanger to solve or alleviate the above technical problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A marine plate heat exchanger, comprising a plurality of heat transfer sheets, a medium over-flow channel is formed between adjacent heat transfer sheets, an edge of one side of the heat transfer sheet is provided with an edge recess, the edge recess forms an edge protrusion on the other side of the heat transfer sheet, an edge sealing gasket is arranged in the edge recess, a middle region of the heat transfer sheet is provided with at least one auxiliary fastening bolt hole and an annular groove is arranged on the periphery of the auxiliary fastening bolt hole, the annular groove forms an annular protrusion on the other side of the heat transfer sheet, an annular sealing gasket is arranged in the annular groove, and the plurality of heat transfer sheets are fastened by the auxiliary fastening bolt passing through the auxiliary fastening bolt hole.

[0007] Further, the heat transfer sheet is provided with a turbulence corrugation.

[0008] Further, four corners of the heat transfer sheet are respectively provided with a medium inlet and outlet hole, the medium inlet and outlet hole comprises a circular hole part, a first hole expansion part protruding from the circular hole part to the width direction middle line and a second hole expansion part protruding from the circular hole part to the length direction middle line.

[0009] Further, the medium inlet and outlet hole is provided with a blocking groove communicated with the edge groove, and two blocking grooves on the same side of the width direction middle line are provided with a blocking sealing gasket, and the remaining two blocking grooves are not provided with the blocking sealing gasket.

[0010] Further, the edge sealing gasket and the blocking sealing gasket are integrally formed.

[0011] Further, the auxiliary fastening bolt hole is provided with a plurality of auxiliary fastening bolt holes, and the auxiliary fastening bolt holes are arranged at intervals along the width direction middle line of the heat transfer sheet.

[0012] The utility model has the advantages that:

[0013] 1. By setting the auxiliary fastening bolt hole in the middle area of the heat transfer sheet and fastening each heat transfer sheet by the auxiliary fastening bolt passing through the auxiliary fastening bolt hole, even if the heat transfer sheet is large and the distance between the clamping bolts is far, the auxiliary fastening bolt can be used for auxiliary fastening, so that the heat transfer core is regarded as a whole, the anti-shock and pressure bearing capacity are improved, the durability is enhanced, and the leakage caused by fluid scouring and external physical vibration is reduced.

[0014] 2. In the prior art, the corner hole is circular, the hole expansion part is arranged in two directions of the circular hole part, so that the area of the medium inlet and outlet hole is larger, more medium can flow and the flow resistance is reduced, and the non-circular corner hole has a larger area facing the inside of the heat transfer sheet, so that the flow is more uniform, the medium flow dead zone is reduced, and the equipment performance is improved.

[0015] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above described exemplary aspects, embodiments and features, further aspects, embodiments and features of the present application will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0017] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the limiting conditions that the present application can be implemented, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0018] Figure 1 A structure diagram of a heat exchange plate of a marine plate heat exchanger is provided for the embodiments of the present application.

[0019] Figure 2 For Figure 1 A partial structure diagram of the edge groove, medium inlet and outlet hole, and blocking groove of the heat exchange plate is shown.

[0020] Figure 3 For Figure 1 A partial structure diagram of the auxiliary fastening bolt hole and annular groove of the heat exchange plate is shown.

[0021] Figure 4 A structure diagram of an integrated edge sealing gasket and blocking sealing gasket of a marine plate heat exchanger is provided for the embodiments of the present application.

[0022] Figure 5 A structure diagram of a plurality of heat exchange plates of a marine plate heat exchanger stacked and connected as a whole is provided for the embodiments of the present application.

[0023] Figure 6 For Figure 5 A partial structure diagram of one heat exchange plate in the above.

[0024] In the figure: 1, heat exchange plate; 11, edge groove; 12, edge protrusion; 13, auxiliary fastening bolt hole; 14, annular groove; 15, annular protrusion; 16, turbulence corrugation; 17, medium inlet and outlet hole; 18, blocking groove; 2, edge sealing gasket; 3, annular sealing gasket; 4, auxiliary fastening bolt; 5, blocking sealing gasket; 6, medium flow passage. DETAILED DESCRIPTION

[0025] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0026] As Figures 1-6 shown, the present embodiment provides a marine plate heat exchanger, which comprises a plurality of heat transfer plates 1 clamped between a fixed compression plate and a movable compression plate by clamping bolts, a medium flow channel 6 is formed between adjacent heat transfer plates, and the plates are sealed by rubber. The middle region of the heat transfer plate is provided with at least one auxiliary fastening bolt hole 13, and an annular groove 14 is arranged on the side of the auxiliary fastening bolt hole 13. The annular groove 14 forms an annular protrusion 15 on the other side of the heat transfer plate, and a ring-shaped sealing gasket 3 is arranged in the annular groove 14. A plurality of heat transfer plates are fastened by auxiliary fastening bolts 4 passing through the auxiliary fastening bolt holes 13. Taking two heat transfer plates stacked one above the other as an example, the annular protrusion 15 of the upper heat transfer plate is pressed into the annular groove 14 of the lower heat transfer plate. Since the annular groove 14 is provided with a ring-shaped sealing gasket 3, the auxiliary fastening bolt hole 13 is sealed, and the medium flow channel 6 and the auxiliary fastening bolt hole 13 cannot communicate.

[0027] By arranging the auxiliary fastening bolt hole 13 in the middle region of the heat transfer plate and fastening each heat transfer plate by the auxiliary fastening bolt 4 passing through the auxiliary fastening bolt hole 13, even if the heat transfer plate is large and the distance between the clamping bolts is far, auxiliary fastening can be performed by the auxiliary fastening bolt 4, so that the heat transfer core is regarded as a whole, the anti-shock and pressure-bearing capacity is improved, the durability is enhanced, and the leakage caused by fluid scouring and external physical vibration is reduced. The auxiliary fastening bolt hole 13 and the medium flow channel 6 are sealed by the ring-shaped sealing gasket 3, so as to avoid leakage from the auxiliary fastening bolt hole 13.

[0028] In the present embodiment, the "rubber sealing between the plates" is specifically structured as follows: the edge of one side surface of the heat transfer plate is provided with an edge groove 11, the edge groove 11 forms an edge protrusion 12 on the other side of the heat transfer plate, and an edge sealing gasket 2 is arranged in the edge groove 11. After the two heat transfer plates are stacked, the edge protrusion 12 of the upper heat transfer plate will be pressed into the edge groove 11 of the lower heat transfer plate. Since the edge groove 11 is provided with an edge sealing gasket 2, the medium flow channel 6 can be sealed. The material of the edge sealing gasket 2 is rubber.

[0029] In this embodiment, the heat transfer plate is provided with flow-disrupting corrugations 16. Most of the flow-disrupting corrugations 16 are located within the medium flow channel 6, with a small portion located outside the medium flow channel 6. (This is because the medium flow channel 6 is bounded by the edge sealing gasket 2, and a small portion of the heat transfer plate still exists outside this boundary. The flow-disrupting corrugations 16 provided in this portion do not function as flow-disrupting corrugations, but do increase the surface area and provide a certain heat dissipation effect.) The flow-disrupting corrugations 16 within the medium flow channel 6 have a specific shape (e.g., a herringbone pattern) and are unevenly convex and concave to enhance the flow-disrupting effect and improve heat exchange performance.

[0030] In the prior art, heat transfer plates are generally rectangular, with a circular corner hole at each of the four corners. In this embodiment, a non-circular medium inlet and outlet hole 17 is provided at each of the four corners. The medium inlet and outlet hole 17 comprises a circular hole portion (the corner hole in the prior art), a first flared hole portion protruding from the circular hole portion toward the widthwise centerline, and a second flared hole portion protruding from the circular hole portion toward the lengthwise centerline. The widthwise centerline refers to a virtual line extending along the lengthwise direction and passing through the widthwise centerline, while the lengthwise centerline refers to a virtual line extending along the widthwise direction and passing through the lengthwise centerline.

[0031] By arranging the expansion portion in two directions of the circular hole portion, the area of ​​the medium inlet and outlet hole 17 is made larger, which is conducive to the flow of more medium and reduces the flow resistance; and the non-circular corner hole has a larger area for diversion facing the inside of the heat transfer plate, the diversion is more uniform, the dead zone of the medium flow is reduced, and the equipment performance is improved.

[0032] In this embodiment, a blocking groove 18 connected to the edge groove 11 is provided on the peripheral side of the medium inlet and outlet hole 17, that is, four blocking grooves 18 are provided, of which two blocking grooves 18 on the same side of the width direction midline are provided with blocking sealing gaskets 5, and the remaining two blocking grooves 18 are not provided with blocking sealing gaskets 5. In this way, two medium inlet and outlet holes 17 are used for the medium inlet and outlet of the current medium flow channel 6, and the other two are used for the medium inlet and outlet of another medium flow channel 6.

[0033] In this embodiment, the edge sealing gasket 2 and the blocking sealing gasket 5 are formed as an integral structure. On the one hand, there is no joint between the edge sealing gasket 2 and the blocking sealing gasket 5, so there will be no leakage points. On the other hand, it is convenient for overall installation.

[0034] In this embodiment, a plurality of auxiliary fastening bolt holes 13 are provided, and the plurality of auxiliary fastening bolt holes 13 are spaced apart along the center line in the width direction of the heat transfer plate.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include 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 through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] The foregoing disclosure provides many different embodiments or examples for implementing different structures of the present application. For simplicity of disclosure, the foregoing description has focused on certain examples. In the interest of clarity, not all components of the examples described above are shown or described. Further, with respect to the methods disclosed, the steps presented are presented in an exemplary order. In some embodiments, the steps can be performed in a different order than those described. Further, some steps can be performed simultaneously. The order in which the steps are presented is not intended to be construed as a limitation, unless specifically specified. Also, it is to be understood that certain features can be incorporated into more than one embodiment. For example, various embodiments of the application can be used in conjunction with one another. Further, the embodiments described above can be used to form other structures not specifically described herein. Many modifications and variations of this application can be made in light of its teachings. Therefore, it is to be understood that within the scope of the claims and their equivalents, the application can be practiced otherwise than as specifically described herein.

[0040] The above description is only specific example of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed in the present application, and these should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. Marine plate heat exchanger comprising a plurality of heat transfer plates between which media flow passages (6) are formed, the edges of one side of the heat transfer plates being provided with edge recesses (11) which form edge protrusions (12) on the other side of the heat transfer plates, the edge recesses (11) being provided with edge sealing gaskets (2), characterized in that The middle area of the heat transfer sheet is provided with at least one auxiliary fastening bolt hole (13), and an annular groove (14) is arranged on the circumferential side of the auxiliary fastening bolt hole (13), the annular groove (14) forms an annular protrusion (15) on the other side of the heat transfer sheet, and an annular sealing gasket (3) is arranged in the annular groove (14), and a plurality of heat transfer sheets are fastened by auxiliary fastening bolts (4) passing through the auxiliary fastening bolt holes (13).

2. The marine plate heat exchanger according to claim 1, characterised in that The heat transfer sheet is provided with a spoiler wave (16).

3. The marine plate heat exchanger according to claim 1, characterised in that A medium inlet and outlet hole (17) is arranged at each corner of the heat transfer sheet, the medium inlet and outlet hole (17) comprises a circular hole part, a first hole expansion part protruding from the circular hole part to the width direction center line, and a second hole expansion part protruding from the circular hole part to the length direction center line.

4. The marine plate heat exchanger according to claim 3, characterised in that The circumferential side of the medium inlet and outlet hole (17) is provided with a blocking groove (18) communicating with the edge groove (11), wherein two blocking grooves (18) on the same side of the width direction center line are provided with a blocking sealing gasket (5), and the remaining two blocking grooves (18) are not provided with the blocking sealing gasket (5).

5. The marine plate heat exchanger according to claim 4, characterised in that The edge sealing gasket (2) and the blocking sealing gasket (5) are integrally formed.

6. The marine plate heat exchanger according to claim 1, characterised in that The auxiliary fastening bolt hole (13) is provided with a plurality of auxiliary fastening bolt holes (13), and the plurality of auxiliary fastening bolt holes (13) are arranged at intervals along the width direction center line of the heat transfer sheet.

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