Novel plate heat exchanger

Abstract

The utility model discloses a novel plate heat exchanger which comprises a fixed end plate, a movable end plate and a plurality of plates, a first sealing ring can form a first heat exchange cavity with the adjacent plates, a second sealing ring can form a second heat exchange cavity with the adjacent plates, the first sealing ring is further connected with a first outer ring, a first sealing partition strip is arranged in the first outer ring, and a second sealing partition strip is arranged in the second outer ring. The first sealing partition strip divides an area defined by the first outer ring into a first sub-area and a second sub-area, and the first sub-area occupied by the cold source inlet or the cold source outlet and the first heat exchange cavity are arranged in a spaced mode through the second sub-area. The second sealing ring is further connected with a second outer ring, a second sealing partition strip is arranged in the second outer ring and divides the area defined by the second outer ring into a third sub-area and a fourth sub-area, and the third sub-area occupied by the heat source inlet or the heat source outlet and the second heat exchange cavity are arranged in a spaced mode through the fourth sub-area. The device is reasonable in structure, good in use stability and capable of effectively preventing media from being mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a novel plate heat exchanger. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchange device, which is mainly composed of a series of corrugated metal plates stacked and assembled. These plates are connected by sealing gaskets to form thin rectangular channels for heat transfer between two different media. The sealing gasket is used to ensure that the two media do not mix with each other while allowing heat transfer. Generally speaking, the operating pressure of the plate heat exchanger does not exceed 2.5MPa, and the operating temperature does not usually exceed 180°C. The sealing gasket is usually made of rubber. As we all know, rubber materials have good flexibility. When the pressure rises due to a fault, there is a risk of seal failure and gasket breakage, resulting in the mixing of the two media and contamination of the media, which poses a greater safety hazard. Utility Model Content

[0003] The utility model discloses a novel plate heat exchanger, which solves the technical problem of the plate heat exchanger in the prior art that the sealing gasket is easily damaged and causes the two media to mix, and has the technical effect of reasonable structure and low risk of medium mixing. The technical scheme adopted is as follows:

[0004] A novel plate heat exchanger comprises a fixed end plate and a movable end plate, wherein a plurality of plates are arranged between the fixed end plate and the movable end plate, and the adjacent two plates are sealed and connected by a first sealing ring or a second sealing ring, wherein the first sealing ring can form a first heat exchange cavity with the adjacent plates, and the second sealing ring can form a second heat exchange cavity with the adjacent plates, and the corresponding positions of the fixed end plate and the plate are respectively provided with a heat source inlet, a heat source outlet, a cold source inlet and a cold source outlet, wherein the heat source inlet and the heat source outlet are connected through a plurality of first heat exchange cavities, and the cold source inlet and the cold source outlet are connected through a plurality of second heat exchange cavities, and a part of the outer wall of the first sealing ring faces the outward extension The heat exchange chamber is provided with a first sealing strip, and the first sealing strip divides the area enclosed by the first outer ring into a first sub-area and a second sub-area, and the first sub-area occupied by the heat source inlet or the heat source outlet is spaced from the first heat exchange chamber by the second sub-area; a part of the outer wall surface of the second sealing ring extends outward to form a second outer ring surrounding the heat source inlet and the heat source outlet, and the second outer ring is provided with a second sealing strip, and the second sealing strip divides the area enclosed by the second outer ring into a third sub-area and a fourth sub-area, and the third sub-area occupied by the heat source inlet or the heat source outlet is spaced from the second heat exchange chamber by the fourth sub-area.

[0005] Based on the above technical solution, the first sealing ring and the second sealing ring have the same structure and are arranged in mirror image.

[0006] On the basis of the above technical solution, a first temperature sensor is provided in the second sub-area, a second temperature sensor is provided in the fourth sub-area, and the first temperature sensor and the second temperature sensor are electrically connected to an external controller respectively.

[0007] On the basis of the above technical solution, the second sub-area includes a plurality of independent second sub-areas, and the fourth sub-area includes a plurality of independent fourth sub-areas.

[0008] On the basis of the above technical solution, a plurality of intersecting second sub-bars divide the second sub-area into a plurality of independent second sub-areas, and a plurality of intersecting fourth sub-bars divide the fourth sub-area into a plurality of independent fourth sub-areas.

[0009] Based on the above technical solution, the first temperature sensor is arranged in a second sub-area close to the first sub-area, and the second temperature sensor is arranged in a fourth sub-area close to the third sub-area.

[0010] Based on the above technical solution, the plate is a titanium plate, and the titanium plate is provided with corrugated patterns.

[0011] On the basis of the above technical solution, the fixed end plate and the movable end plate are connected by a plurality of bolt assemblies arranged circumferentially.

[0012] On the basis of the above technical solution, two guide rods are fixedly provided on the fixed end plate, and the two guide rods are symmetrically arranged on both sides of the plate and partially embedded in the concave cavity formed by the outer edge of the plate. The first end of the guide rod is fixedly connected to the fixed end plate, and the second end of the guide rod is plugged into the movable end plate.

[0013] On the basis of the above technical solution, identifiers are provided on the panels to facilitate identification of the arrangement order of the panels.

[0014] Beneficial Effects

[0015] The utility model has a reasonable structure. The arrangement of the first sub-zone and the second sub-zone in the first outer ring enables the cold source inlet or the cold source outlet to be spaced apart from the first heat exchange chamber. The arrangement of the third sub-zone and the fourth sub-zone in the second outer ring enables the heat source inlet or the heat source outlet to be spaced apart from the second heat exchange chamber. In this way, the flow paths of the two media can be structurally separated. In addition, a first temperature sensor is provided in the second sub-zone, and a second temperature sensor is provided in the fourth sub-zone. In this way, even if the first sealing ring enclosing the first heat exchange chamber is damaged, it will not be immediately mixed with another medium, and an alarm signal can also be sent through the sensor to facilitate timely maintenance by staff.

[0016] In the utility model, the second sub-area also includes a plurality of independent second sub-areas, and the fourth sub-area also includes a plurality of independent fourth sub-areas, which can further improve the safety of use and further avoid the mixing of the two media; in addition, the setting of a plurality of second sub-areas and a plurality of fourth sub-areas can also enhance the structural stability of the sealing gasket here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 : A schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 : A schematic diagram of the structure after the first sealing ring and the plate are assembled in Example 1;

[0020] Figure 3 : A schematic diagram of the structure after the second sealing ring and the plate are assembled in Example 1;

[0021] Figure 4 : A schematic diagram of the structure after the first sealing ring and the plate are assembled in Example 2; DETAILED DESCRIPTION

[0022] The following description and accompanying drawings fully illustrate the specific embodiments of this article so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of this article includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the structure, device or equipment including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such structure, device or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the structure, device or equipment including the elements. Each embodiment is described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0023] The terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. in this document indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this document and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of this document, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, it can also be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] As used herein, the term "plurality" means two or more than two, unless otherwise specified.

[0025] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0026] In this article, the term "and / or" is a description of the association relationship between objects, indicating that three relationships may exist. For example, A and / or B means: A or B, or, A and B.

[0027] Example 1

[0028] like Figures 1 to 3 A novel plate heat exchanger shown in the figure comprises a fixed end plate 1 and a movable end plate 2 which are fixedly arranged. The fixed end plate 1 and the movable end plate 2 are connected by a plurality of bolt assemblies 3 which are evenly arranged circumferentially. The bolt assembly 3 comprises a screw and a nut. The first end of the screw passes through the fixed end plate 1, and the flange at the first end abuts against the fixed end plate 1. The second end of the screw passes through the movable end plate 2 and is screwed to the nut, so that the space between the fixed end plate 1 and the movable end plate 2 can be compressed.

[0029] like Figure 1 As shown, a plurality of plates 5 are arranged between the fixed end plate 1 and the movable end plate 2, and two adjacent plates 5 are sealed and connected by a first sealing ring 6 or a second sealing ring 7. In addition, the plate 5 and the fixed end plate 1 or the movable end plate 2 are also connected by a sealing gasket to prevent the circulating medium from being prohibited between the plate 5 and the fixed end plate 1 or the movable end plate 2; the plate 5 is a titanium plate, and the titanium plate is provided with corrugated patterns.

[0030] The first sealing ring 6 and the adjacent plate 5 together enclose a first heat exchange cavity 61, and the second sealing ring 7 and the adjacent plate 5 together enclose a second heat exchange cavity 71. The setting of the corrugated pattern promotes the formation of turbulence and helps to reduce the flow dead angle.

[0031] A heat source inlet 51, a heat source outlet 52, a cold source inlet 53 and a cold source outlet 54 are respectively provided at the corresponding positions of the fixed end plate 1 and the plate 5. Figure 2 As shown, the first sealing ring 6 is arranged around the heat source inlet 51 and the heat source outlet 52, that is, the heat source inlet and the heat source outlet on the same plate 5 are connected to the first heat exchange chamber 61; part of the outer wall surface of the first sealing ring 6 extends outward to form a first outer ring surrounding the cold source inlet and the cold source outlet, and a first sealing spacer is arranged in the first outer ring. The first sealing spacer divides the area enclosed by the first outer ring into a first sub-area 62 and a second sub-area 63. The first sub-area 62 occupied by the cold source inlet 53 or the cold source outlet 54 is separated from the first heat exchange chamber by the second sub-area 63, and a plurality of intersecting second sub-spacers divide the second sub-area 63 into a plurality of independent second sub-areas 631. A first temperature sensor 8 is arranged in the second sub-area 631 close to the first sub-area 62. The first temperature sensor 8 can be electrically connected to an external controller. When the temperature detected by the first temperature sensor 8 exceeds the set range value, the controller sends an alarm signal;

[0032] like Figure 3As shown, the second sealing ring 7 is arranged around the cold source inlet 53 and the cold source outlet 54, that is, the cold source inlet 53 and the cold source outlet 54 on the same plate 5 are connected to the second heat exchange chamber 71, and part of the outer wall surface of the second sealing ring 7 extends outward to form a second outer ring surrounding the heat source inlet 51 and the heat source outlet 52. A second sealing spacer is arranged in the second outer ring, and the second sealing spacer divides the area enclosed by the second outer ring into a third sub-area 72 and a fourth sub-area 73. The third sub-area 72 occupied by the heat source inlet 51 or the heat source outlet 52 is spaced from the second heat exchange chamber 71 by the fourth sub-area 73. Several intersecting fourth sub-spacers divide the fourth sub-area 73 into several independent fourth sub-areas 731. A second temperature sensor 9 is arranged in the fourth sub-area 731 close to the third sub-area 72. The second temperature sensor 9 can be electrically connected to an external controller. When the temperature detected by the second temperature sensor 9 exceeds the set range value, the controller sends an alarm signal.

[0033] like Figure 2 and 3 As shown, the plate 5 is designed to be symmetrical along the central axis to facilitate production and maintenance. In addition, the first sealing ring 6 and the second sealing ring 7 have the same structure and are arranged in a mirror image to facilitate production.

[0034] like Figure 1 As shown, two guide rods 4 are fixedly provided on the fixed end plate 1, and the two guide rods 4 are symmetrically arranged on both sides of the plate 5 and partially embedded in the concave cavity 55 formed on the outer edge of the plate 5. The first end of the guide rod 4 is fixedly connected to the fixed end plate 1, and the second end of the guide rod 4 is plugged into the movable end plate 2, so that the plate 5 can be positioned to reduce warping deformation. In addition, an identifier is provided on the plate 5 to facilitate the identification of the arrangement order of the plate 5.

[0035] Example 2

[0036] The difference between Example 2 and Example 1 is that Figure 4 As shown, the second sub-area 63 includes a plurality of independent second sub-areas 632, and a plurality of second sub-areas 631 are arranged in parallel and gradually approach the first heat exchange chamber 61; similarly, the fourth sub-area 73 includes a plurality of independent fourth sub-areas 731, and a plurality of fourth sub-areas 731 are arranged in parallel and gradually approach the second heat exchange chamber 71.

[0037] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A novel plate heat exchanger, comprising a fixed end plate (1) and a movable end plate (2) which are fixedly arranged, wherein a plurality of plate members (5) are arranged at intervals between the fixed end plate (1) and the movable end plate (2), and two adjacent plate members (5) are sealed and connected via a first sealing ring (6) or a second sealing ring (7), wherein the first sealing ring (6) can form a first heat exchange cavity (61) with adjacent plate members (5), and the second sealing ring (7) can form a second heat exchange cavity (71) with adjacent plate members (5), and the fixed end plate (1) and the plate members (5) are provided with a heat source inlet (51), a heat source outlet (52), a cold source inlet (53) and a cold source outlet (54) at corresponding positions thereof, wherein the heat source inlet (51) and the heat source outlet (52) are connected via the first heat exchange cavity (61), and the cold source inlet (53) and the cold source outlet (54) are connected via a plurality of second heat exchange cavities (71), and wherein: A portion of the outer wall of the first sealing ring (6) extends outward to form a first outer ring surrounding the cold source inlet (53) and the cold source outlet (54); a first sealing spacer is provided in the first outer ring, the first sealing spacer divides the area enclosed by the first outer ring into a first sub-area (62) and a second sub-area (63), and the first sub-area (62) occupied by the cold source inlet (53) or the cold source outlet (54) is spaced from the first heat exchange chamber (61) by the second sub-area (63); a portion of the outer wall of the second sealing ring (7) extends outward to form a second outer ring surrounding the heat source inlet and the heat source outlet; a second sealing spacer is provided in the second outer ring, the second sealing spacer divides the area enclosed by the second outer ring into a third sub-area (72) and a fourth sub-area (73), and the third sub-area (72) occupied by the heat source inlet (51) or the heat source outlet (52) is spaced from the second heat exchange chamber (71) by the fourth sub-area (73); The second sub-area (63) includes a plurality of independent second sub-areas (631), and the fourth sub-area (73) includes a plurality of independent fourth sub-areas (731).

2. The novel plate heat exchanger according to claim 1 is characterized in that: The first sealing ring (6) and the second sealing ring (7) have the same structure and are arranged in mirror image.

3. The novel plate heat exchanger according to claim 1 or 2, characterized in that: A first temperature sensor (8) is provided in the second sub-area (63), and a second temperature sensor (9) is provided in the fourth sub-area (73); the first temperature sensor (8) and the second temperature sensor (9) are respectively electrically connected to an external controller.

4. The novel plate heat exchanger according to claim 3 is characterized in that: A plurality of intersecting second sub-bars divide the second sub-area (63) into a plurality of independent second sub-areas (631), and a plurality of intersecting fourth sub-bars divide the fourth sub-area (73) into a plurality of independent fourth sub-areas (731).

5. The novel plate heat exchanger according to claim 4 is characterized in that: The first temperature sensor (8) is arranged in a second sub-area (631) close to the first sub-area (62), and the second temperature sensor (9) is arranged in a fourth sub-area (731) close to the third sub-area (72).

6. The novel plate heat exchanger according to claim 5 is characterized in that: The plate (5) is a titanium plate, and a corrugated pattern is provided on the titanium plate.

7. The novel plate heat exchanger according to claim 6 is characterized in that: The fixed end plate (1) and the movable end plate (2) are connected via a plurality of bolt assemblies (3) arranged circumferentially.

8. The novel plate heat exchanger according to claim 7 is characterized in that: Two guide rods (4) are also fixedly disposed on the fixed end plate (1). The two guide rods (4) are symmetrically disposed on both sides of the plate member (5) and partially embedded in a concave cavity (55) formed on the outer edge of the plate member (5). The first end of the guide rod (4) is fixedly connected to the fixed end plate (1), and the second end of the guide rod (4) is plugged into the movable end plate (2).

9. The novel plate heat exchanger according to any one of claims 6 to 8, characterized in that: The plate members (5) are provided with identifiers to facilitate identification of the arrangement order of the plate members (5).

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