Split type heat exchange device

Abstract

According to the split type heat exchange device, a medium outlet of a first heat exchanger communicates with a medium inlet of a second heat exchanger through a first pipeline, a medium outlet of the second heat exchanger communicates with a medium inlet of the first heat exchanger through a second pipeline, and a compressor is arranged on the first pipeline or the second pipeline; according to the first heat exchanger, a first tube plate is arranged at one end in a heat exchanger shell, a second tube plate is arranged at the other end in the heat exchanger shell, the heat exchanger shell is divided into a first collecting chamber, a heat exchange chamber and a second collecting chamber through the first tube plate and the second tube plate, and heat exchange tubes are arranged between the first tube plate and the second tube plate in the heat exchange chamber. Heat-conducting media circulate in gaps between the heat exchange tubes and the heat exchanger shell, the heat exchange tubes are connected with the first collecting chamber and the second collecting chamber, and a main fluid inlet communicated with the first collecting chamber and a main fluid outlet connected with the second collecting chamber are formed in the heat exchanger shell. According to the utility model, the heat exchange temperature difference is reduced, the use efficiency of heat exchange equipment is improved, the scaling corrosion and blockage of the heat exchange equipment are reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange equipment, and in particular relates to a split-type heat exchange device. Background Art

[0002] Most of the existing heat exchange equipment in my country is of the direct heat exchange type with the media on both sides being the same body. During the production process, in order to maintain the heat exchange efficiency of the heat exchange unit, the inlet and outlet water temperature difference on the heat source side must be guaranteed. The outlet water temperature on the heat source side must be greater than the outlet water temperature on the cold source side. As a result, the heat exchange equipment has higher requirements for the heat source and the utilization efficiency of the low-temperature heat source is low.

[0003] At the same time, the high salt and corrosive properties of some wastewater media inevitably impact heat exchange equipment, causing issues such as difficulty cleaning and scaling within the pipes. This not only reduces equipment efficiency but also significantly shortens its service life. Using higher-performance corrosion-resistant materials would significantly increase equipment costs.

[0004] With the development of new energy, various energy recycling and utilization methods have become more diverse. Low-grade sewage heat sources, industrial waste heat, flue gas heat sources, etc. have been widely mentioned and utilized. However, the original heat exchange equipment can no longer meet the needs of various working conditions. More advanced technology and equipment are needed to solve the problems of low efficiency, easy clogging, and short life of existing heat exchange equipment. Therefore, a new type of heat exchange equipment is needed to improve heat exchange efficiency and reduce heat exchange temperature difference. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to overcome the defects of direct heat exchange between the heat source and the cold source of the existing heat exchange equipment, and provide a split heat exchange device with simple structure, high heat exchange efficiency and long service life.

[0006] The technical solution adopted to solve the above technical problems is: a split heat exchange device, the medium outlet of the first heat exchanger is connected to the medium inlet of the second heat exchanger through a first pipe, the medium outlet of the second heat exchanger is connected to the medium inlet of the first heat exchanger through a second pipe, and a compressor is provided on the first pipe or the second pipe; the first heat exchanger is: a first tube sheet is provided at one end of the heat exchanger shell and a second tube sheet is provided at the other end, the first tube sheet and the second tube sheet divide the heat exchanger shell into a first collecting chamber, a heat exchange chamber, and a second collecting chamber, a heat exchange tube is provided between the first tube sheet and the second tube sheet in the heat exchange chamber, a heat-conducting medium flows in the gap between the heat exchange tube and the heat exchanger shell, the heat exchange tube is connected to the first collecting chamber and the second collecting chamber, and the heat exchanger shell is provided with a main fluid inlet connected to the first collecting chamber and a main fluid outlet connected to the second collecting chamber.

[0007] As a preferred technical solution, the second heat exchanger has the same structure as the first heat exchanger.

[0008] As a preferred technical solution, the number of the heat exchange tubes is more than 2, and the tube diameter is 6mm to 38mm.

[0009] As a preferred technical solution, staggered guide plates are provided in the heat exchange chamber to enable the heat transfer medium to flow in an S-shaped route in the heat exchange chamber.

[0010] As a preferred technical solution, the heat exchanger shell is wrapped with an insulation layer.

[0011] As a preferred technical solution, the thermal insulation layer is a rock wool layer.

[0012] The beneficial effects of the utility model are as follows:

[0013] The split structure of the utility model isolates the direct heat exchange between the heat source and the cold source, and realizes indirect heat exchange between the heat source and the heated source through the evaporation and condensation cycle of the heat-conducting medium, thereby reducing the heat exchange temperature difference, improving the utilization efficiency of the heat exchange equipment, reducing the scaling, corrosion and blockage of the heat exchange equipment, and extending the service life of the heat exchange equipment.

[0014] The heat exchanger of the utility model is provided with staggered guide plates in the heat exchange chamber, so that the heat transfer medium flows along an S-shaped route in the heat exchange chamber, increasing the contact area and contact time between the heat transfer medium and the heat exchange tube, thereby improving the heat exchange efficiency.

[0015] This utility model can better utilize low-temperature heat sources, reduce the requirements for heat source outlet water temperature, reduce the heat exchange temperature difference, and improve the utilization efficiency of low-temperature heat sources. It is applicable to various working conditions, including low-grade sewage heat sources, industrial waste heat, flue gas heat sources, etc., and can meet the new demand for heat exchange equipment in the development of new energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a structural diagram of the first heat exchanger of the utility model.

[0018] Figure 3 yes Figure 2 AA cross-sectional view.

[0019] Among them: first heat exchanger 1, first pipeline 2, compressor 3, second heat exchanger 4, second pipeline 5, heat exchanger shell 1-1, first collecting chamber 1-2, heat exchange tube 1-3, heat exchange chamber 1-4, main fluid inlet 1-5, second collecting chamber 1-6, second tube sheet 1-7, guide plate 1-8, insulation layer 1-9, first tube sheet 1-10, main fluid outlet 1-11. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and examples, but the present invention is not limited to the following embodiments.

[0021] exist Figure 1 In the split-type heat exchange device of this embodiment, the medium outlet of the first heat exchanger 1 is connected to the medium inlet of the second heat exchanger 4 through the first pipe 2, and the medium outlet of the second heat exchanger 4 is connected to the medium inlet of the first heat exchanger 1 through the second pipe 5. A compressor 3 is installed on the first pipe 2 to provide power to the heat-conducting medium.

[0022] exist Figure 2 、 3 In the embodiment, the first heat exchanger 1 includes a heat exchanger shell 1-1, a first tube sheet 1-10, a second tube sheet 1-7, and a heat exchange tube 1-3. The heat exchanger shell 1-1 is wrapped with an insulation layer 1-9 to prevent heat loss. The insulation layer 1-9 is a rock wool layer. A first tube sheet 1-10 is fixed at one end of the heat exchanger shell 1-1 and a second tube sheet 1-7 is provided at the other end. The first tube sheet 1-10 and the second tube sheet 1-7 divide the heat exchanger shell into a first collection chamber 1-2, a heat exchange chamber 1-4, and a second collection chamber 1-6. The heat exchange chamber 1-4 has the first tube sheet 1-10 and the second tube sheet 1-7. Evenly distributed heat exchange tubes 1-3 are arranged between plates 1-7. The diameter of heat exchange tubes 1-3 is 20 mm, but can also be 6 mm or 38 mm. A heat transfer medium flows through the gap between heat exchange tubes 1-3 and heat exchanger shell 1-1. Staggered guide plates 1-8 are installed within heat exchange chamber 1-4. The radius of guide plates 1-8 is the same as that of heat exchange chamber 1-4, and their axes coincide with the axis of heat exchange chamber 1-4. This allows the heat transfer medium to flow in an S-shaped path within heat exchange chamber 1-4, ensuring sufficient contact with heat exchange tubes 1-3 and improving heat exchange efficiency. Heat exchange tubes 1-3 communicate with first and second collection chambers 1-2 and 1-6. Heat exchanger shell 1-1 is provided with a main fluid inlet 1-5 connected to the first collection chamber 1-2 and a main fluid outlet 1-11 connected to the second collection chamber 1-6.

[0023] The second heat exchanger 4 of this embodiment has the same structure as the first heat exchanger 1 .

[0024] The working principle of this utility model is as follows:

[0025] When in use, the utility model is connected to the equipment that needs to exchange heat, wherein the first heat exchanger 1 is connected to the heat source pipeline, and the second heat exchanger 4 is connected to the heated source pipeline. The heat source enters the heat exchange tube 1-3 of the first heat exchanger 1 and exchanges heat with the heat-conducting medium outside the heat exchange tube 1-3. After the heat-conducting medium is heated, it enters the second heat exchanger 4 driven by the compressor 3, and exchanges heat with the heated source in the heat exchange tube 1-3 in the heat exchange chamber 1-4 of the second heat exchanger 4. The heated source absorbs heat and outputs it, thereby realizing heat exchange between the heat source and the heated source.

Claims

1. A split heat exchange device, characterized in that: The medium outlet of the first heat exchanger is connected to the medium inlet of the second heat exchanger through a first pipe, and the medium outlet of the second heat exchanger is connected to the medium inlet of the first heat exchanger through a second pipe. A compressor is provided on the first pipe or the second pipe; the first heat exchanger is: a first tube sheet is provided at one end of the heat exchanger shell and a second tube sheet is provided at the other end. The first tube sheet and the second tube sheet divide the heat exchanger shell into a first collecting chamber, a heat exchange chamber, and a second collecting chamber. Heat exchange tubes are provided between the first tube sheet and the second tube sheet in the heat exchange chamber. Heat-conducting medium flows in the gap between the heat exchange tubes and the heat exchanger shell. The heat exchange tubes are connected to the first collecting chamber and the second collecting chamber. The heat exchanger shell is provided with a main fluid inlet connected to the first collecting chamber and a main fluid outlet connected to the second collecting chamber.

2. The split heat exchange device according to claim 1, characterized in that: The second heat exchanger has the same structure as the first heat exchanger.

3. The split heat exchange device according to claim 1 or 2, characterized in that: The number of the heat exchange tubes is more than 2, and the tube diameter is 6mm to 38mm.

4. The split-type heat exchange device according to claim 3, characterized in that: The heat exchange chamber is provided with staggered guide plates so that the heat transfer medium flows in an S-shaped route in the heat exchange chamber.

5. The split heat exchange device according to claim 1, 2 or 4, characterized in that: The heat exchanger shell is wrapped with a thermal insulation layer.

6. The split heat exchange device according to claim 5, characterized in that: The thermal insulation layer is a rock wool layer.

Images