Plate sheet for double-medium and single-medium heat exchange and plate heat exchanger equipment

Abstract

The invention relates to a double-medium and single-medium heat exchange plate and plate heat exchanger equipment. The heat exchange plate is provided with a first corner hole, a second corner hole, a third corner hole, a fourth corner hole and a sixth corner hole, a first flow guide area, a first heat exchange area and a second flow guide area are arranged between the first corner hole and the fourth corner hole, a third flow guide area, the second heat exchange area and the fourth flow guide area are arranged between the third corner hole and the sixth corner hole, and a third medium heat exchange area is arranged between the fifth corner hole and the second corner hole. The plate sheet group of the heat exchanger is formed by alternately assembling the plate sheets and sealing rubber pads. According to the double-medium and single-medium heat exchange plate type heat exchanger equipment, heat exchange between two different media and another medium can be achieved through one piece of equipment.

Description

Technical Field

[0001] The invention relates to the field of heat exchange equipment, in particular to a plate and plate type heat exchanger equipment for heat exchange between double media and single media. Background Art

[0002] Plate heat exchanger is a kind of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular flow channels are formed between various plates, and heat is exchanged through the plates. Plate heat exchanger is an ideal equipment for liquid-liquid and liquid-steam heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small footprint, wide application and long service life. Under the same pressure loss, its heat transfer coefficient is 3-5 times higher than that of tubular heat exchanger, and the footprint is one-third of that of tubular heat exchanger, and the heat recovery rate can be as high as more than 90%.

[0003] Plate heat exchangers usually consist of two channels, which exchange heat between a single heat source and a single cold source. However, under certain working conditions, two different media need to exchange heat with another medium, and the two different media need to be isolated. In actual use, two plate heat exchangers are usually connected in parallel on one side and in series on the other side. However, this solution occupies too much space and requires complex pipe connections.

[0004] In order to solve the above problems, a dual-medium and single-medium heat exchange plate heat exchanger device is specially invented. One heat exchanger can realize heat exchange between two different media and another medium. Summary of the invention

[0005] The object of the present invention is to provide a plate and plate heat exchanger equipment for double-medium and single-medium heat exchange, which can achieve the purpose of heat exchange between two different media and another medium.

[0006] The technical solution of the present invention:

[0007] A plate for heat exchange between dual media and single media, the plate comprising a corner hole, a first flow guide area, a second flow guide area, a third flow guide area, a fourth flow guide area, a first heat exchange area, a second heat exchange area and a sealing groove, the corner hole comprising a first corner hole and a second corner hole at the upper end of the plate, a third corner hole and a fourth corner hole in the middle, and a fifth corner hole and a sixth corner hole at the lower end, the first corner hole, the second corner hole and the fourth corner hole are respectively the first flow guide area, the first heat exchange area and the second flow guide area from top to bottom, the third corner hole and the fifth corner hole, the sixth corner hole From top to bottom, the corner holes are respectively the third guide area, the second heat exchange area and the fourth guide area; the sealing groove is divided into a corner hole sealing groove, a peripheral sealing groove and an intermediate sealing groove, the corner hole sealing groove is the outer peripheral groove of the first corner hole, the second corner hole, the third corner hole, the fourth corner hole, the fifth corner hole and the sixth corner hole, the peripheral sealing groove includes the first guide area, the second guide area, the third guide area, the fourth guide area, the first heat exchange area and the outer groove of the second heat exchange area, and the intermediate sealing groove is the groove between the second guide area and the third guide area.

[0008] A dual-medium and single-medium heat exchange plate heat exchanger device includes a fixed plate, a movable plate, and a plate group placed between the fixed plate and the movable plate. A clamping bolt pair clamps the fixed plate, the movable plate and the plate group. The upper end of the fixed plate is a first inlet and a second inlet, the middle is a third inlet and a fourth inlet, and the lower end is a fifth inlet and a sixth inlet; the plate bundle includes a plurality of the above-mentioned plates and sealing gaskets between the plates, one side of the plate is a first medium flow channel and a second medium flow channel, and the other side of the plate is a third medium flow channel.

[0009] Beneficial effects of the present invention:

[0010] 1. The device of the present application provides a dual-medium and single-medium heat exchange plate heat exchanger device, which can realize heat exchange between two different media and another medium by one device.

[0011] 2. The device of the present application can realize the same function as two heat exchangers in the prior art operating in series by a single device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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. Obviously, the drawings in the following description are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the overall structure of the dual-medium and single-medium heat exchange plate heat exchanger equipment of this application.

[0014] Figure 2This is an exploded schematic diagram of the dual-medium and single-medium heat exchange plate heat exchanger equipment structure for this application.

[0015] Figure 3 This is a front view schematic diagram of the dual-medium and single-medium heat exchange plate heat exchanger plates in this application.

[0016] Figure 4 This is a schematic diagram of the reverse side of the dual-medium and single-medium heat exchange plate heat exchanger plates of this application.

[0017] Figure 5 This is a schematic diagram of the first sealing gasket of the dual-medium and single-medium heat exchange plate heat exchanger of this application.

[0018] Figure 6 This is a schematic diagram of the second sealing gasket of the dual-medium and single-medium heat exchange plate heat exchanger of this application.

[0019] Figure 7 This is a schematic diagram of the process flow of dual-medium and single-medium heat exchange plate heat exchanger equipment for this application.

[0020] Reference numerals:

[0021] Fixed plate 1; movable plate 2; plate 3; first inlet and outlet 1-1 of fixed plate; fourth inlet and outlet 1-2 of fixed plate; third inlet and outlet 1-3 of fixed plate; sixth inlet and outlet 1-4 of fixed plate; fifth inlet and outlet 1-5 of fixed plate; second inlet and outlet 1-6 of fixed plate;

[0022] First corner hole 301-1; fourth corner hole 301-2; third corner hole 301-3; sixth corner hole 301-4; fifth corner hole 302-1; second corner hole 302-2; first flow guide area 303-1; second flow guide area 303-2; third flow guide area 303-3; fourth flow guide area 303-4; first heat exchange area 304-1; second heat exchange area 304-2; peripheral sealing groove 305-1; middle sealing groove 305-2;

[0023] The first sealing pad 4-1; the second sealing pad 4-2; the sealing pad body 41-1; the middle sealing area 41-2; the first corner hole sealing area 411-1; the fourth corner hole sealing area 411-2; the third corner hole 411-3 sealing area; the sixth corner hole sealing area 411-4; the fifth corner hole sealing area 412-1; the second corner hole sealing area 412-2. DETAILED DESCRIPTION

[0024] In order to realize heat exchange between two different media and another medium, the present invention is specially invented to realize heat exchange between two different media and another medium. One device can realize heat exchange between two different media and another medium.

[0025] It should be noted that, in the description of the present application, terms such as "inside", "outside", "front", "back", "upper", and "lower" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] A dual-medium and single-medium heat exchange plate heat exchanger device, mainly including a fixed plate 1, a movable plate 2, a plate 3, a sealing pad, an upper and lower beam, and a pair of clamping bolts. The head end of the device is a fixed plate 1, the tail end is a movable plate 2, and between the fixed plate 1 and the movable plate 2 is a plate group consisting of plates 3 and sealing pads arranged alternately. The fixed plate, plate 3 and sealing pad of this device are of a special structural design as described below, and the sealing pad includes a first sealing tape and a second sealing pad. The plate group is positioned by two upper and lower beams respectively, and the whole device is locked and fixed by multiple sets of clamping bolts. One side of the plate in the plate group is a first medium flow channel and a second medium flow channel, and the other side of the plate is a third medium flow channel. The first medium and the second medium can be a heat source or a cold source as needed.

[0028] In order to adapt to the new structure of the plate, the medium inlet and outlet on the fixed plate are also adjusted accordingly. The upper left side of the fixed plate is the first inlet and outlet 1-1 of the fixed plate, the middle right side is the fourth inlet and outlet 1-2 of the fixed plate, the middle left side is the third inlet and outlet 1-3 of the fixed plate, the lower right side is the sixth inlet and outlet 1-4 of the fixed plate, the lower left side is the fifth inlet and outlet 1-5 of the fixed plate, and the upper right side is the second inlet and outlet 1-6 of the fixed plate.

[0029] A plate for heat exchange between dual media and single media, the plate 3 comprising corner holes, a first flow guide area 303-1, a second flow guide area 303-2, a third flow guide area 303-3, a fourth flow guide area 303-4, a first heat exchange area 304-1, a second heat exchange area 304-2 and a sealing groove. The corner holes comprise a first corner hole 301-1 at the upper left end of the plate, a third corner hole 301-3 in the middle and a fifth corner hole 302-1 at the lower end, and a second corner hole 302-2 at the upper right end of the plate, a fourth corner hole 301-2 in the middle and a sixth corner hole 301-4.

[0030] The first corner hole 301-1, the second corner hole 302-2 and the fourth corner hole 301-2 are respectively the first guide area 303-1, the first heat exchange area 304-1 and the second guide area 303-2 from top to bottom. The first corner hole 301-1 and the second corner hole 302-2 are below and inside the first guide area 303-1, the first heat exchange area 304-1 is below the first guide area 303-1, and the second heat exchange area 304-1 and the fourth corner hole 301-2 are between the second guide area 303-2. The third corner hole 301-3 and the fifth corner hole 302-1, the sixth corner hole 301-4 are respectively the third guide area 303-3, the second heat exchange area and the fourth guide area 303-4 from top to bottom. The third guide area 303-3 is below and inside the third corner hole 301-3, the second heat exchange area 304-2 is below the third guide area 303-3, and the fourth guide area 303-4 is below the second heat exchange area and between the fifth corner hole 301-3 and the sixth corner hole 301-4.

[0031] The sealing groove is divided into a corner hole sealing groove, a peripheral sealing groove 305-1 and an intermediate sealing groove 305-2. The corner hole sealing groove is the outer peripheral groove of the first corner hole 301-1, the second corner hole 302-2, the third corner hole 301-3, the fourth corner hole 301-2, the fifth corner hole 302-1 and the sixth corner hole 301-4. The peripheral sealing groove 305-1 includes the outer grooves of the first guide area 303-1, the second guide area 303-2, the third guide area 303-3, the fourth guide area 303-4, the first heat exchange area 304-1 and the second heat exchange area 304-2. The intermediate sealing groove 305-2 is a groove between the second guide area and the third guide area. The left end of the intermediate sealing groove 305-2 is connected to the upper side of the third corner hole, and the right end of the intermediate sealing groove is connected to the lower side of the fourth corner hole.

[0032] The sealing pad is divided into a first sealing pad 4-1 and a second sealing pad 4-2. The first sealing pad 4-1 and the second sealing pad 4-2 are both integrated structures. The first sealing pad 4-1 is installed on the first medium flow channel and the second medium flow channel side of the plate 3, and the second sealing pad is installed on the third medium flow channel side of the adjacent next plate. The first sealing pad 4-1 includes a sealing pad body 41-1. The upper left end of the sealing pad body 41-1 is provided with a first corner hole sealing area 411-1. The first corner hole sealing area 411-1 is closed on the outside and open on the inside. The first medium flows in from the open part on the inside. The lower left end is provided with a fifth corner hole sealing area 412-1, and the fifth corner hole sealing area 412-1 is completely closed. The upper right end is provided with a second corner hole sealing area 412-2, and the second corner hole sealing area 412-2 is completely closed. A sixth corner hole sealing area 411-4 is provided at the lower right end. The sixth corner hole sealing area 411-4 is closed on the outside and open on the inside. The second medium flows out from the open part on the inside. A middle sealing area 41-2 is provided in the middle of the sealing pad body. Both ends of the middle sealing area 41-2 are connected to the sealing pad body. Figure 5 As shown, the middle sealing area can be designed to be S-shaped, with the left side of the middle sealing area 41-2 protruding upward (from which the second medium flows into the plates), and the right side protruding downward (from which the first medium flows out of the plates).

[0033] The second sealing pad 4-2 includes a sealing pad body, and a first corner hole sealing area is provided at the upper left end of the sealing pad body, and the first corner hole sealing area 411-1 is completely closed. A fifth corner hole sealing area 412-1 is provided at the lower left end, and the fifth corner hole sealing area 412-1 is closed on the outside and open on the inside, and the third medium flows in from the open part on the inside. A second corner hole sealing area 412-2 is provided at the upper right end, and the second corner hole sealing area 412-2 is closed on the outside and open on the inside. A sixth corner hole sealing area 411-4 is provided at the lower right end, and the sixth corner hole sealing area 411-4 is completely closed. A third corner hole sealing area 411-3 and a fourth corner hole sealing area 411-2 are provided on the left and right sides of the middle part of the sealing pad body, and the fourth corner hole sealing area 411-2 and the third corner hole sealing area 411-3 are completely closed.

[0034] The main shape of the two sealing gaskets of the present application is adapted to the form of the sealing groove of the plate. The main body of the sealing gasket shown in the drawings of the present application is rectangular, which is the most widely used in the prior art.

[0035] The installation process of dual-medium and single-medium heat exchange plate heat exchanger equipment in this application:

[0036] Instructions attached Figure 7 Example Description

[0037] The front end of the equipment is a fixed plate, and the rear end is a movable plate, and plates and sealing pads are alternately installed between the fixed plate and the movable plate.

[0038] The first sealing pad is installed on the first plate, the second sealing pad is installed on the second plate, and so on. The first sealing pad is installed on the odd-numbered plates, and the second sealing pad is installed on the even-numbered plates. The even-numbered plates are obtained by rotating the odd-numbered plates 180° in the same plane (i.e., rotating them upside down). An intermediate sealing groove is provided between the second guide area and the third guide area of ​​the plate, which is sealed by the intermediate sealing area of ​​the first sealing pad. The second sealing pad does not seal the sealing area between the second guide area and the third guide area. The first sealing pad is sandwiched between the odd-numbered plates and the even-numbered plates, and the first medium flow channel is formed in the upper part and the second medium flow channel is formed in the lower part. The first and second medium flow channels are completely isolated by the first sealing pad and will not mix. The second sealing pad is sandwiched between the even-numbered plates and the odd-numbered plates to form a third medium flow channel. The third medium flow channel is completely connected, and the third medium exchanges heat with the first and second media in turn.

[0039] Install the plates with sealing pads on the beams between the fixed plate and the movable plate in order, such as Figure 7 As shown, the first medium flow channel and the second medium flow channel are between the first plate and the second plate, the third medium flow channel is between the second plate and the third plate, and so on.

[0040] Connect the first and fourth inlet and outlet of the fixed plate of the equipment to the cold and hot ends of the first medium respectively, connect the third and sixth inlet and outlet of the fixed plate to the cold and hot ends of the second medium respectively, and connect the fifth and second inlet and outlet of the fixed plate to the cold and hot ends of the third medium respectively.

[0041] The working process of the dual-medium and single-medium heat exchange plate heat exchanger equipment in this application:

[0042] When the equipment is running, the first medium enters the equipment through the first inlet and outlet of the fixed plate, then enters between the plates through the first corner hole of the plate (the sixth corner hole of the next plate), flows downward, and flows through the first guide area, the first heat exchange area, and the second guide area in turn, and then flows out of the equipment through the fourth corner hole of the plate (the third corner hole of the next plate) and the fourth inlet and outlet of the fixed plate.

[0043] The second medium enters the equipment through the third inlet and outlet of the fixed plate, and then enters the second heat exchange area between the plates through the third corner hole of the plate (the fourth corner hole of the next plate), flows downward, and flows through the third guide area, the second heat exchange area and the fourth guide area in turn, and then flows out of the equipment through the sixth corner hole of the plate (the first corner hole of the next plate) and the sixth inlet and outlet of the fixed plate.

[0044] The two media on the first and second medium flow channels flow independently without mixing.

[0045] The third medium enters the device through the fifth inlet and outlet of the fixed plate, and then enters the third medium flow channel through the fifth corner hole of the plate (the second corner hole of the next plate), flows upward, and flows through the fourth guide area, the second heat exchange area, and the third guide area in sequence, and exchanges heat with the second medium in this process. The third medium continues to flow upward, flows through the second guide area, the first heat exchange area, and the first guide area in sequence, and exchanges heat with the first medium on the first medium flow channel side in this process, and then flows out of the device through the second corner hole of the plate (the fifth corner hole of the next plate) and the second inlet and outlet of the fixed plate.

[0046] Due to the special design of this equipment, the media in the first and second medium flow channels and the third medium flow channel do not directly contact each other. The first and second media do not contact each other. The third medium exchanges heat with the second medium in the lower part of the flow channel and exchanges heat with the first medium in the upper part of the flow channel. Its function is equivalent to two heat exchangers running in series, but it is cheaper and more convenient to use than two heat exchangers in series.

[0047] Note: The directional words "up", "down", "left" and "right" in the description of the fixing plate in this application are Figure 2 The orientation is described as standard.

[0048] In the description of the plate structure in this application, the directional words "up", "down", "left" and "right" are used as the Figure 3 The orientation is as described in the standard.

[0049] In the description of the sealing gasket in this application, the directional words "up", "down", "left" and "right" are used in the following manner: Figure 4 , 5 The orientation is as described in the standard.

[0050] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and does not deviate from the technical solution of the present invention, and designs a structure and implementation similar to the technical solution based on the above implementation examples without creativity according to the technical essence of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A plate for heat exchange between dual media and single media, characterized in that: The plate comprises a corner hole, a first flow guide area, a second flow guide area, a third flow guide area, a fourth flow guide area, a first heat exchange area, a second heat exchange area and a sealing groove, The corner holes include a first corner hole and a second corner hole at the upper end of the plate, a third corner hole and a fourth corner hole in the middle, and a fifth corner hole and a sixth corner hole at the lower end. The first corner hole, the second corner hole and the fourth corner hole are respectively the first guide area, the first heat exchange area and the second guide area from top to bottom, and the third corner hole, the fifth corner hole and the sixth corner hole are respectively the third guide area, the second heat exchange area and the fourth guide area from top to bottom; The sealing groove is divided into a corner hole sealing groove, a peripheral sealing groove and an intermediate sealing groove. The corner hole sealing groove is the outer peripheral groove of the first corner hole, the second corner hole, the third corner hole, the fourth corner hole, the fifth corner hole and the sixth corner hole. The peripheral sealing groove includes the first guide area, the second guide area, the third guide area, the fourth guide area, the first heat exchange area and the outer side groove of the second heat exchange area. The intermediate sealing groove is the groove between the second guide area and the third guide area.

2. A dual-medium and single-medium heat exchange plate heat exchanger device, comprising a fixed plate, a movable plate, a plate group placed between the fixed plate and the movable plate, and a clamping bolt pair clamping the fixed plate, the movable plate and the plate group, characterized in that: The upper end of the fixed plate is the first inlet and the second inlet, the middle part is the third inlet and the fourth inlet, and the lower end is the fifth inlet and the sixth inlet; the plate bundle includes a plurality of plates as described in claim 1 and sealing gaskets between the plates, one side of the plate is the first medium flow channel and the second medium flow channel, and the other side of the plate is the third medium flow channel.

3. A dual-medium and single-medium heat exchange plate heat exchanger device according to claim 2, characterized in that: The sealing rubber pad is divided into a first sealing rubber pad and a second sealing rubber pad. The first sealing rubber pad is installed on the first medium flow channel and the second medium flow channel side of the plate, and the second sealing rubber pad is installed on the third medium flow channel side of the next plate. The first sealing gasket includes a sealing gasket body, wherein a first corner hole sealing area is provided at the upper left end of the sealing gasket body, the first corner hole sealing area is closed on the outside and open on the inside, a fifth corner hole sealing area is provided at the lower left end, and the fifth corner hole sealing area is completely closed; a second corner hole sealing area is provided at the upper right end, and the second corner hole sealing area is completely closed, a sixth corner hole sealing area is provided at the lower right end, the sixth corner hole sealing area is closed on the outside and open on the inside, and the middle of the sealing gasket body is an intermediate sealing area. The second sealing pad includes a sealing pad body, wherein a first corner hole sealing area is provided at the upper left end of the sealing pad body, and the first corner hole sealing area is completely closed; a fifth corner hole sealing area is provided at the lower left end, and the fifth corner hole sealing area is closed on the outside and open on the inside; a second corner hole sealing area is provided at the upper right end, and the second corner hole sealing area is closed on the outside and open on the inside; a sixth corner hole sealing area is provided at the lower right end, and the sixth corner hole sealing area is completely closed; a third corner hole sealing area and a fourth corner hole sealing area are respectively provided on the left and right sides of the middle part of the sealing pad body, and the third corner hole sealing area and the fourth corner hole sealing area are completely closed.

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