Two-stage lamella heat exchanger

Abstract

The two-stage lamella heat exchanger comprises a first heat exchanger body and a second heat exchanger body which are of the same structure, the first heat exchanger body and the second heat exchanger body are fixedly connected into a whole, and the first heat exchanger body and the second heat exchanger body are symmetrically arranged along the connecting position. The liquid inlet, the liquid outlet, the medium inlet and the medium outlet of the second heat exchanger are opposite to the liquid inlet, the liquid outlet, the medium inlet and the medium outlet of the first heat exchanger. The two same heat exchangers are symmetrically spliced together to form a two-stage integrated heat exchanger, so that the heat exchange efficiency of a single heat exchanger is improved, and the two heat exchangers can also be split into two parts to be independently used.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger structures, in particular to a two-stage plate and shell heat exchanger. Background Art

[0002] The plate and shell heat exchanger combines the advantages of plate and shell and tube heat exchangers. It has the advantages of high heat transfer efficiency, small terminal temperature difference, high temperature and high pressure resistance, compactness and light weight. It has been widely used in production processes such as chemical, refrigeration, food and medicine.

[0003] After the plate and shell heat exchanger is designed, its heat exchange efficiency and capacity are fixed. When one heat exchanger cannot meet the heat exchange effect, two or more heat exchangers are often used in series to achieve the required heat exchange efficiency. However, two heat exchangers connected in series are often inconvenient to install. At the same time, after being connected in series, it is easy to occupy a large space and affect production. In view of the above problems, the utility model provides a solution. Utility Model Content

[0004] The utility model aims to provide a two-stage plate and shell heat exchanger.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A two-stage plate and shell heat exchanger comprises two heat exchangers of the same structure, namely, a first heat exchanger and a second heat exchanger. The first heat exchanger and the second heat exchanger are fixedly connected as a whole, and the first heat exchanger and the second heat exchanger are symmetrically arranged along the connection position, that is, the liquid inlet, liquid outlet, medium inlet and medium outlet of the second heat exchanger are arranged opposite to the liquid inlet, liquid outlet, medium inlet and medium outlet of the first heat exchanger.

[0007] Furthermore, a detachable end cover is provided at one end of the heat exchanger, and a liquid inlet and a connecting groove of a U-shaped structure are provided on the end cover. A connecting groove of a U-shaped structure is provided at the other end of the heat exchanger. The connecting groove and the connecting groove are staggered. A plurality of heat exchange tubes are installed in the heat exchange cavity of the heat exchanger. The plurality of heat exchange tubes are arranged side by side, and the two ends of the heat exchange tubes are respectively sealed and connected to the connecting groove and the connecting groove. The plurality of heat exchange tubes are connected end to end through the connecting groove and the connecting groove to connect the liquid inlet and the liquid outlet.

[0008] Furthermore, the end cover 1 is provided with an adjusting flange, the heat exchanger 1 shell is provided with a fixing flange, the adjusting flange and the fixing flange are provided with through holes for the adjusting screw to pass through, and the contact surface between the end cover 1 and the heat exchanger 1 shell is sealed by a sealing ring.

[0009] Furthermore, sealing ring 1 and sealing ring 2 are respectively provided at the bottom of the mounting holes of the connecting groove 1 and the connecting groove 2 for mounting the heat exchange tube.

[0010] Furthermore, the connecting ends of the heat exchanger 1 and the heat exchanger 2 are provided with a connecting flange, and the connecting flange is provided with a connecting hole for the connecting screw to pass through, and the heat exchanger 1 and the heat exchanger 2 are fixedly connected by the connecting screw.

[0011] Furthermore, the liquid outlet 1 of the heat exchanger 1 and the liquid inlet 2 of the heat exchanger 2 are sealed and connected via a bellows.

[0012] In summary, the utility model has the following beneficial effects: the utility model symmetrically assembles two identical heat exchangers together to form a two-stage integrated heat exchanger to increase the heat exchange efficiency of a single heat exchanger, and can also be split into two and used separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the end cover of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the connection end of the utility model.

[0016] In the figure, 1, heat exchanger 1; 2, heat exchanger 2; 3, heat exchange chamber; 4, heat exchange tube; 5, medium inlet 1; 6, medium outlet 1; 7, medium inlet 2; 8, medium outlet 2; 9, end cover 1; 10, end cover 2; 11, liquid inlet 1; 12, liquid outlet 1; 13, liquid inlet 2; 14, bellows; 15, liquid outlet 2; 16, connecting flange; 17, connecting groove 1; 18, sealing ring 1; 19, adjusting flange; 20, fixing flange; 21, adjusting screw; 22, connecting groove 2; 23, sealing ring 2; 24, connecting screw. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1As shown, a two-stage plate and shell heat exchanger comprises two heat exchangers 1 and 2 of the same structure, wherein the heat exchangers 1 and 2 are fixedly connected as one, and the heat exchangers 1 and 2 are symmetrically arranged along the connection position, that is, the liquid inlet, liquid outlet, medium inlet and medium outlet of the heat exchanger 2 are arranged opposite to the liquid inlet, liquid outlet, medium inlet and medium outlet of the heat exchanger 1, and the liquid inlet 11, liquid outlet 12, medium inlet 16 and medium inlet 27 of the heat exchanger 1 correspond to the liquid outlet 2 15, liquid inlet 2 13, medium outlet 2 8 and medium inlet 27 of the heat exchanger 2.

[0019] Further, such as Figure 1 , Figure 2 and Figure 3 As shown, a detachable end cover 9 is provided at one end of the heat exchanger 1, and a liquid inlet 11 and a connecting groove 17 of a U-shaped structure are provided on the end cover 9. A connecting groove 22 of a U-shaped structure is provided at the other end of the heat exchanger 1. The connecting groove 17 and the connecting groove 22 are staggered. A plurality of heat exchange tubes 4 are installed in the heat exchange cavity 3 of the heat exchanger 1. The plurality of heat exchange tubes are arranged side by side, and the two ends of the heat exchange tubes 4 are sealedly connected with the connecting groove 17 and the connecting groove 22 respectively. The plurality of heat exchange tubes 4 are connected end to end through the connecting groove 17 and the connecting groove 22 to connect the liquid inlet 11 and the liquid outlet 12.

[0020] Furthermore, the end cover 9 is provided with an adjusting flange 19, and the outer shell of the heat exchanger 1 is provided with a fixing flange 20. The adjusting flange 19 and the fixing flange 20 are provided with through holes for the adjusting screw 21 to pass through. The fixing flange 20 can be a threaded hole. The contact surface between the end cover 9 and the outer shell of the heat exchanger 1 is sealed by a sealing ring.

[0021] Furthermore, the bottoms of the mounting holes of the connecting groove 1 17 and the connecting groove 2 22 for mounting the heat exchange tube 4 are respectively provided with a sealing ring 18 and a sealing ring 2 23. When connected, the heat exchange tube 4 is clamped in the connecting groove 1 17 and the connecting groove 2 22 by setting a margin at the matching position of the end cover 1 9 and the heat exchanger shell 1 and adjusting the tightening degree of the screw 21.

[0022] Furthermore, a connecting flange 16 is provided at the connecting end of the heat exchanger 1 and the heat exchanger 2, and a connecting hole for a connecting screw 24 to pass through is provided on the connecting flange 16. The heat exchanger 1 and the heat exchanger 2 are fixedly connected by the connecting screw 24.

[0023] Furthermore, the liquid outlet 12 of the heat exchanger 1 and the liquid inlet 13 of the heat exchanger 2 are sealed and connected via a bellows 14. The bellows 14 is hidden in the connection cavity and looks more like a whole from the outside.

[0024] During installation, first connect the liquid outlet 12 and the liquid inlet 2 13 with the bellows 14, and then fix the two heat exchangers into one by passing the connecting screw 24 through the connecting flange 16. The utility model symmetrically assembles two identical heat exchangers together to form a two-stage integrated heat exchanger to increase the heat exchange efficiency of a single heat exchanger. It can also be split into two and used separately.

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A two-stage plate and shell heat exchanger, comprising a heat exchanger 1 (1) and a heat exchanger 2 (2) of the same structure, characterized in that: The heat exchanger 1 (1) and the heat exchanger 2 (2) are fixedly connected to form an integral body, and the heat exchanger 1 (1) and the heat exchanger 2 (2) are symmetrically arranged along the connection position, that is, the liquid inlet, liquid outlet, medium inlet and medium outlet of the heat exchanger 2 (2) are arranged opposite to the liquid inlet, liquid outlet, medium inlet and medium outlet of the heat exchanger 1 (1); a detachable end cover 1 (9) is provided at one end of the heat exchanger 1 (1), and the end cover 1 (9) is provided with a liquid inlet 1 (11) and a U-shaped connecting groove 1 (17); The other end of the heat exchanger (1) is provided with a connecting groove (22) of a U-shaped structure, the connecting groove (17) and the connecting groove (22) are arranged in a staggered manner, a plurality of heat exchange tubes (4) are installed in the heat exchange chamber (3) of the heat exchanger (1), the plurality of heat exchange tubes are arranged side by side, the two ends of the heat exchange tubes (4) are respectively sealedly connected to the connecting groove (17) and the connecting groove (22), and the plurality of heat exchange tubes (4) are connected end to end through the connecting groove (17) and the connecting groove (22) to connect the liquid inlet (11) and the liquid outlet (12).

2. A two-stage plate and shell heat exchanger according to claim 1, characterized in that: The end cover 1 (9) is provided with an adjusting flange (19), the outer shell of the heat exchanger 1 (1) is provided with a fixing flange (20), the adjusting flange (19) and the fixing flange (20) are provided with through holes for the adjusting screw (21) to pass through, and the contact surface between the end cover 1 (9) and the outer shell of the heat exchanger 1 (1) is sealed by a sealing ring.

3. A two-stage plate and shell heat exchanger according to claim 2, characterized in that: The bottoms of the mounting holes of the connecting groove 1 (17) and the connecting groove 2 (22) for mounting the heat exchange tube (4) are respectively provided with a sealing ring 1 (18) and a sealing ring 2 (23).

4. A two-stage plate and shell heat exchanger according to claim 3, characterized in that: The connecting ends of the heat exchanger 1 (1) and the heat exchanger 2 (2) are provided with connecting flanges (16), and the connecting flanges (16) are provided with connecting holes for the connecting screws (24) to pass through, and the heat exchanger 1 (1) and the heat exchanger 2 (2) are fixedly connected via the connecting screws (24).

5. A two-stage plate and shell heat exchanger according to claim 4, characterized in that: The liquid outlet port 1 (12) of the heat exchanger 1 (1) and the liquid inlet port 2 (13) of the heat exchanger 2 (2) are sealed and connected via a bellows (14).

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