Multi-section plate heat exchanger

Abstract

The invention belongs to the technical field of plate heat exchangers, and particularly relates to a multi-section plate heat exchanger which comprises a fixed pressing plate, a movable pressing plate and a plurality of spacers. A plurality of spacers are arranged between the fixed pressing plate and the movable pressing plate, and heat exchange runners are formed between the adjacent spacers, between the spacers and the fixed pressing plate or / and between the spacers and the movable pressing plate; every two adjacent heat exchange runners can exchange heat with each other; the multiple heat exchange runners can communicate with one another and form a heat exchange total channel, and the heat exchange runners of the same heat exchange total channel are not adjacent. All the heat exchange runners form at least three heat exchange main channels, and heat exchange can be carried out between at least two heat exchange main channels. According to the scheme, the plate heat exchanger has the advantages of being compact in structure, small in occupied area and the like, heat exchange among various media is achieved in the scenes of milk cooling or automobile air inlet and the like, partition is conducted through the partition pieces, the weight is reduced, and economical efficiency and equipment compactness are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plate heat exchangers, and in particular relates to a multi-stage plate heat exchanger. Background Art

[0002] In scenarios such as heat recovery, plate heat exchangers are generally used for heat exchange to achieve the purpose of preheating or heat recovery. Plate heat exchangers have the advantages of large heat exchange surface area and high flow rate, but existing plate heat exchangers generally use a structure consisting of a cold end and a hot end, which can only achieve heat exchange between two media. For example, in scenarios such as milk cooling or automobile air intake, different media are often required in different links. In the existing technology, multiple heat exchangers are often used for separate heat exchange. It is impossible to meet the use requirements of multi-media heat exchange in the same heat exchanger.

[0003] Therefore, it is necessary to design a multi-stage plate heat exchanger that can meet the needs of multi-media heat exchange scenarios. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a multi-stage plate heat exchanger.

[0005] The technical solution adopted by the present invention is: A multi-stage plate heat exchanger comprises a fixed pressing plate, a movable pressing plate and a plurality of spacers; A number of spacers are arranged between the fixed pressing plate and the movable pressing plate, and heat exchange channels are formed between adjacent spacers, between the spacer and the fixed pressing plate, or / and between the spacer and the movable pressing plate; two adjacent heat exchange channels can exchange heat with each other; a plurality of heat exchange channels can be interconnected and form a total heat exchange channel, and the heat exchange channels of the same total heat exchange channel are not adjacent; all the heat exchange channels form at least three total heat exchange channels, and heat exchange can be performed between at least two total heat exchange channels.

[0006] As an alternative or supplement to the above-mentioned multi-stage plate heat exchanger: it also includes a joint component A and a joint component B, both of which are in the shape of a quadrilateral plate, and elbow joints and / or straight joints are arranged at the corners of the joint component A and the joint component B, one interface of the elbow joint extends to the outside of the joint component A or the joint component B, and the other interface faces the partition, and the two interfaces of the straight joint are connected to the opposite sides of the joint component A or the joint component B.

[0007] As an alternative or supplement to the above-mentioned multi-stage plate heat exchanger: there are four heat exchange channels between the joint component A and the fixed pressing plate, namely, channel a, channel b, channel c and channel d; there are four channels between the joint component A and the joint component B, namely, channel e, channel f, channel g and channel h; there are four heat exchange channels between the joint component B and the movable pressing plate, namely, channel i, channel j, channel k and channel m; the interface S2 on the fixed pressing plate is connected to the joint component A through channel a and channel c. The interface A2 on the joint assembly is connected; the interface S3 on the fixed clamping plate is connected to the interface A3 on the joint assembly A through the flow channel b and the flow channel d; the interface A4 on the joint assembly A is connected to the interface T2 on the movable clamping plate through the flow channel e, the flow channel g, the straight-through joint on the joint assembly B, the flow channel i and the flow channel k; the interface A1 on the joint assembly A is connected to the interface B3 on the joint assembly B through the flow channel f and the flow channel h; the interface T3 on the movable clamping plate is connected to the interface T4 on the movable clamping plate through the flow channel j and the flow channel m.

[0008] The beneficial effects of the present invention are as follows: the plate heat exchanger in this scheme has the advantages of compact structure and small footprint, and can realize heat exchange between multiple media, thereby meeting the use requirements of heat exchange between different media; in addition, since spacers are used to separate the flow channels, the scalability of the heat exchanger can be improved, the weight can be effectively reduced, and the economy and compactness of the equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0010] Figure 1 is a three-dimensional structural diagram of a multi-stage plate heat exchanger in Example 2; Figure 2 It is a schematic diagram of the medium flow direction of the multi-stage plate heat exchanger in Example 2.

[0011] In the figure: 1-base; 2-first liquid inlet; 3-fixed clamping plate; 4-second liquid outlet; 5-tension rod; 6-upper guide beam; 7-column; 8-lower guide beam; 9-support foot; 10-pipe hole; 11-first spacer; 12-first prefabricated heat exchange plate box; 121-pipe sleeve; 122-side plate; 123-ring frame; 13-movable clamping plate; 14-second spacer; 15-second pipeline; 16-first pipeline; 17- The fourth pipeline; 18-the third pipeline; 19-the first seat frame; 20-the second seat frame; 21-the third seat frame; 22-the fourth seat frame; 23-the first liquid outlet; 24-the second prefabricated heat exchange plate box; 25-the fifth seat frame; 26-the sixth seat frame; 28-the third spacer; 29-the sixth pipeline; 30-the fifth pipeline; 31-the valve plate; 32-the valve plate control motor; 33-the joint assembly A; 34-the joint assembly B; 35-the heat exchange flow channel. DETAILED DESCRIPTION

[0012] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0013] Example 1 like Figure 1 As shown, this embodiment designs a mounting bracket for a plate heat exchanger, which includes a fixed clamping plate 3, a movable clamping plate 13, an upper guide beam 6, a column 7, a lower guide beam 8, a base 1, a tension rod 5, a support foot 9 and other components.

[0014] The fixed pressing plate 3 and the movable pressing plate 13 are arranged side by side, and the space between the fixed pressing plate 3 and the movable pressing plate 13 is used for installing the plate heat exchanger.

[0015] When the column 7 is erected on the right side of the movable clamping plate 13, the upper guide beam 6 is fixedly connected between the fixed clamping plate 3 and the upper end of the column 7, and the lower guide beam 8 is fixedly connected between the fixed clamping plate 3 and the upper end of the column 7. The upper edge and the lower edge of the movable clamping plate 13 are provided with avoidance grooves. When the movable clamping plate 13 is installed between the upper guide beam 6 and the lower guide beam 8, the upper guide beam 6 and the lower guide beam 8 are inserted into the corresponding avoidance grooves.

[0016] Through holes or through grooves are provided at the edges of the front and rear sides of the movable clamping plate 13 and the fixed clamping plate 3 to facilitate the passage of the tensioning rod 5 and realize the connection between the movable clamping plate 13 and the fixed clamping plate 3. A step pad is sleeved on the tensioning rod 5, and the nut of the tensioning rod 5 is tightened to the fixed clamping plate 3 through a step pad. A nut is connected to the external thread at the other end of the tensioning rod 5, and the nut is tightened to the movable clamping plate 13 through another step pad.

[0017] When the plate heat exchanger is installed between the movable pressing plate 13 and the fixed pressing plate 3, the tension rod 5 pulls the fixed pressing plate 3 and the movable pressing plate 13 closer to each other, thereby pressing the plate heat exchanger, enhancing the contact between the chambers of the plate heat exchanger, and improving the heat exchange effect. In addition, since the distance between the movable pressing plate 13 and the fixed pressing plate 3 is adjustable, different numbers of flow channels can be added between the two, and heat exchange is achieved through the combination and coordination of the flow channels, achieving the effect of multi-stage heat exchange.

[0018] In addition, a base 1 is fixedly connected below the column 7 and the fixed pressing plate 3, and a liftable support foot 9 is connected below the base 1. The support foot 9 includes an internal threaded sleeve, a threaded rod and a foot cup. The lower end of the threaded rod is fixedly connected to the foot cup, the upper end of the foot cup is threadedly connected to the internal threaded sleeve, and the upper end of the internal threaded sleeve is fixedly connected to the base 1. By rotating the threaded rod, the height of the support foot 9 can be adjusted.

[0019] Example 2 like Figure 1 to Figure 2 As shown, this embodiment designs a multi-stage plate heat exchanger, which can be installed on the mounting bracket of Example 1. The multi-stage plate heat exchanger of this embodiment includes a fixed clamping plate, a movable clamping plate, a plurality of spacers, a joint assembly A33 and a joint assembly B34.

[0020] A number of spacers are arranged between the fixed pressing plate and the movable pressing plate, and heat exchange channels 35 are formed between adjacent spacers, between the spacer and the fixed pressing plate, or / and between the spacer and the movable pressing plate; two adjacent heat exchange channels 35 can exchange heat with each other; multiple heat exchange channels 35 can be interconnected and form a total heat exchange channel, and the heat exchange channels 35 of the same total heat exchange channel are not adjacent; all the heat exchange channels 35 form at least three total heat exchange channels, and heat exchange can be performed between at least two total heat exchange channels.

[0021] The joint assembly A33 and the joint assembly B34 are both in the shape of a quadrilateral plate, and elbow joints and / or straight joints are arranged at the corners of the joint assembly A33 and the joint assembly B34. One interface of the elbow joint extends to the outside of the joint assembly A33 or the joint assembly B34, and the other interface faces the spacer. The two interfaces of the straight joint connect the opposite sides of the joint assembly A33 or the joint assembly B34.

[0022] There are four heat exchange channels 35 between the joint assembly A33 and the fixed clamping plate 3, namely, channel a, channel b, channel c and channel d; there are four channels between the joint assembly A33 and the joint assembly B34, namely, channel e, channel f, channel g and channel h; there are four heat exchange channels 35 between the joint assembly B34 and the movable clamping plate 13, namely, channel i, channel j, channel k and channel m; the interface S2 on the fixed clamping plate is connected to the interface A2 on the joint assembly A33 through the channels a and c. Connected; interface S3 on the fixed clamping plate is connected with interface A3 on the joint assembly A33 through flow channel b and flow channel d; interface A4 on the joint assembly A33 is connected with interface T2 on the movable clamping plate through flow channel e, flow channel g, straight-through joint on the joint assembly B34, flow channel i and flow channel k; interface A1 on the joint assembly A33 is connected with interface B3 on the joint assembly B34 through flow channel f and flow channel h; interface T3 on the movable clamping plate is connected with interface T4 on the movable clamping plate through flow channel j and flow channel m.

[0023] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A multi-stage plate heat exchanger, characterized in that: It comprises a fixed pressing plate (3), a movable pressing plate (13) and a plurality of spacers; A plurality of spacers are arranged between the fixed pressing plate (3) and the movable pressing plate (13); heat exchange channels (35) are formed between adjacent spacers, between the spacers and the fixed pressing plate (3), or / and between the spacers and the movable pressing plate (13); two adjacent heat exchange channels (35) can exchange heat with each other; a plurality of heat exchange channels (35) can be interconnected to form a total heat exchange channel, and the heat exchange channels (35) of the same total heat exchange channel are not adjacent; all the heat exchange channels (35) form at least three total heat exchange channels, and heat exchange can be performed between at least two total heat exchange channels.

2. The multi-stage plate heat exchanger according to claim 1, characterized in that: The invention also includes a joint assembly A (33) and a joint assembly B (34), wherein the joint assembly A (33) and the joint assembly B (34) are both in the shape of a quadrilateral plate, and an elbow joint or / and a straight joint are arranged at the corners of the joint assembly A (33) and the joint assembly B (34), wherein one interface of the elbow joint extends outward from the joint assembly A (33) or the joint assembly B (34), and the other interface faces the spacer, and the two interfaces of the straight joint communicate with the opposite sides of the joint assembly A (33) or the joint assembly B (34).

3. The multi-stage plate heat exchanger according to claim 2, characterized in that: There are four heat exchange channels (35) between the joint assembly A (33) and the fixed clamping plate (3), namely, channel a, channel b, channel c and channel d; there are four channels between the joint assembly A (33) and the joint assembly B (34), namely, channel e, channel f, channel g and channel h; there are four heat exchange channels (35) between the joint assembly B (34) and the movable clamping plate (13), namely, channel i, channel j, channel k and channel m; the interface S2 on the fixed clamping plate is connected to the interface A2 on the joint assembly A (33) through the channel a and the channel c. ; Interface S3 on the fixed clamping plate is connected to interface A3 on joint assembly A (33) through flow channel b and flow channel d; interface A4 on joint assembly A (33) is connected to interface T2 on the movable clamping plate (13) through flow channel e, flow channel g, the straight-through joint on joint assembly B (34), flow channel i and flow channel k; interface A1 on joint assembly A (33) is connected to interface B3 on joint assembly B (34) through flow channel f and flow channel h; interface T3 on the movable clamping plate (13) is connected to interface T4 on the movable clamping plate (13) through flow channel j and flow channel m.

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