A new type of spiral wound heat exchanger

Abstract

The utility model discloses a novel spiral winding heat exchanger, including shell, core barrel, heat medium inlet, refrigerant inlet, heat medium outlet and refrigerant outlet, the refrigerant inlet and refrigerant outlet are provided with two, the core barrel is provided with the horizontal baffle in, and the cavity of core barrel is divided into two, the both ends of core barrel all are equipped with electromagnetic three -way valve no.

Description

Technical Field

[0001] This utility model relates to the field of spiral wound heat exchanger technology, specifically a novel spiral wound heat exchanger. Background Technology

[0002] Spiral tube heat exchangers have unparalleled advantages over ordinary shell and tube heat exchangers. They have a wide applicable temperature range, are adaptable to thermal shock, eliminate thermal stress themselves, and have high compactness. Due to their special structure, the flow field is fully developed and there are no dead zones. In particular, by setting up multiple tubes (single shell), multiple fluids can be exchanged simultaneously in one device.

[0003] Current spiral wound tube heat exchangers all have a single-chamber heat exchange zone. The single-chamber space is large, while the coverage area of ​​the spiral wound tube is limited. Therefore, it is difficult to make a breakthrough in improving the heat exchange efficiency. Moreover, since this type of heat exchanger requires regular maintenance, the entire heat exchanger must be shut down once maintenance is required, which leads to a decrease in heat exchange efficiency.

[0004] Therefore, in order to correct the above-mentioned defects, we propose a novel spiral wound heat exchanger. Utility Model Content

[0005] The technical problem solved by this utility model is to propose a novel spiral wound heat exchanger.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel spiral wound heat exchanger, comprising a shell, a core cylinder, a heat medium inlet, a cold medium inlet, a heat medium outlet, and a cold medium outlet. Two cold medium inlets and outlets are provided. A horizontal partition is provided inside the core cylinder, dividing the core cylinder cavity into two parts. Electromagnetic three-way valves are installed at both ends of the core cylinder. Two ports of the two electromagnetic three-way valves are respectively connected to the two cavities of the core cylinder, and the third ports of the two electromagnetic three-way valves are respectively connected to the heat medium inlet and the heat medium outlet.

[0007] The core tube has a tube sheet and a spiral tube wound around the outside of the tube sheet in each of its two cavities. The inlet of each spiral tube is connected to a refrigerant inlet, and the outlet of each spiral tube is connected to a refrigerant outlet.

[0008] Furthermore, it also includes a second electromagnetic three-way valve, which is located on one side of the housing, and the two ports of the second electromagnetic three-way valve are respectively connected to two refrigerant inlets through a pipe.

[0009] Furthermore, a two-way valve is installed on the first pipeline.

[0010] Furthermore, it also includes a solenoid three-way valve, which is located on one side of the housing, and the two ports of the solenoid three-way valve are respectively connected to two refrigerant outlets through pipe two.

[0011] Furthermore, a two-way valve is also installed on the second pipeline.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the heat exchanger in this utility model adopts two non-interfering heat exchange zones, and the heat medium and cold medium are divided into two paths for entry and exit. The cavity space of each heat exchange zone is reduced and the coverage of the winding tube is increased, which improves the heat exchange effect. Moreover, when maintenance is required, the "one stop, one work" method can be adopted to keep the heat exchanger running without interruption, so as not to affect the overall heat exchange efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the left-side structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the right-side structure of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides a technical solution:

[0019] Please see Figure 1-4 A novel spiral wound heat exchanger includes a shell 1, a core cylinder, a heat medium inlet 2, a cold medium inlet 3, a heat medium outlet 14, and a cold medium outlet 8. There are two cold medium inlets 3 and two cold medium outlets 8. A horizontal partition 4 is installed inside the core cylinder to divide the core cylinder cavity into two. Solenoid three-way valves 7 are installed at both ends of the core cylinder. Two ports of the two solenoid three-way valves 7 are respectively connected to the two cavities of the core cylinder, and the third ports of the two solenoid three-way valves 7 are respectively connected to the heat medium inlet 2 and the heat medium outlet 14.

[0020] The core tube has a tube sheet 5 and a spiral tube 6 wound around the outside of the tube sheet 5 in both cavities. The inlets of the two spiral tubes 6 are each connected to a refrigerant inlet 3, and the outlets of the two spiral tubes 6 are each connected to a refrigerant outlet 8.

[0021] Both ends of the core tube are equipped with end caps, which are not connected to the core tube. The electromagnetic three-way valve 7 is located inside the end cap, and the two ports of the electromagnetic three-way valve 7 pass through the blocking plate between the end cap and the core tube.

[0022] The heat exchanger has two independent heat exchange zones. The heat medium and the cold medium are divided into two separate inlet and outlet paths. Each independent heat exchange zone has a corresponding spiral tube 6. When the heat medium enters, it is diverted into the two heat exchange chambers through the electromagnetic three-way valve 7.

[0023] The heat exchanger also includes a second electromagnetic three-way valve 9 and a third electromagnetic three-way valve 12. The second electromagnetic three-way valve 9 is located on one side of the outer shell 1, and its two ports are connected to two refrigerant inlets 3 through pipe 10. The third electromagnetic three-way valve 12 is located on one side of the outer shell 1, and its two ports are connected to two refrigerant outlets 8 through pipe 2 13.

[0024] That is, the refrigerant in the external refrigerant pipe is diverted to the two refrigerant inlets 3 by the electromagnetic three-way valve 29, and then enters the two spiral tubes 6. The heat medium in the external heat medium pipe and the heat-exchanged refrigerant flowing out of the two spiral tubes 6 are collected together by the electromagnetic three-way valve 312.

[0025] Two-way valves 11 are installed on both pipe 10 and pipe 2 13 for backwashing and drainage.

[0026] When the heat exchanger needs maintenance and cleaning, one of the heat exchange zones can be shut down first by controlling solenoid three-way valve 17, solenoid three-way valve 29, and solenoid three-way valve 312. The shut-down heat exchange zone will be maintained and cleaned first, and then the other heat exchange zone will be maintained and cleaned. The heat exchange zone that has been cleaned will continue to work.

[0027] The control of the above-mentioned electromagnetic three-way valve 17, electromagnetic three-way valve 29, and electromagnetic three-way valve 312 all belong to existing control technologies, so they will not be described in detail in this case.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel spiral wound heat exchanger, comprising a shell (1), a core cylinder, a heat medium inlet (2), a cold medium inlet (3), a heat medium outlet (14), and a cold medium outlet (8), characterized in that: There are two refrigerant inlets (3) and refrigerant outlets (8). A horizontal partition (4) is provided inside the core cylinder to divide the cavity of the core cylinder into two parts. Electromagnetic three-way valves (7) are installed at both ends of the core cylinder. The two ports of the two electromagnetic three-way valves (7) are respectively connected to the two cavities of the core cylinder. The third ports of the two electromagnetic three-way valves (7) are respectively connected to the heat medium inlet (2) and the heat medium outlet (14). The core tube has a tube sheet (5) and a winding tube (6) wrapped around the outside of the tube sheet (5) in both cavities. The inlets of the two winding tubes (6) are each connected to a refrigerant inlet (3), and the outlets of the two winding tubes (6) are each connected to a refrigerant outlet (8).

2. The novel spiral wound heat exchanger as claimed in claim 1, wherein: It also includes a second electromagnetic three-way valve (9), which is located on one side of the outer shell (1), and the two ports of the second electromagnetic three-way valve (9) are respectively connected to two refrigerant inlets (3) through a first pipe (10).

3. The novel spiral wound heat exchanger as claimed in claim 2, wherein: A two-way valve (11) is installed on the first (10) pipe.

4. The novel spiral wound heat exchanger as claimed in claim 1, wherein: It also includes a solenoid three-way valve (12), which is located on one side of the housing (1), and the two ports of the solenoid three-way valve (12) are respectively connected to two refrigerant outlets (8) through pipe two (13).

5. The novel spiral wound heat exchanger as claimed in claim 4, wherein: A two-way valve (11) is also installed on the second pipe (13).

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