Heat exchanger capable of preventing medium crystallization

Abstract

According to the heat exchanger capable of preventing medium crystallization, a first medium inlet and a first medium outlet are formed in a first flat plate, a core body is arranged in a shell, a first heat exchange channel and a second heat exchange channel are formed in the core body, and heating channels are formed in the first flat plate, the second flat plate, the third flat plate and the fourth flat plate correspondingly; the surfaces of the first flat plate, the second flat plate, the third flat plate and the fourth flat plate are respectively provided with a heating medium inlet and a heating medium outlet, and two ends of the heating channel are respectively communicated with the heating medium inlet and the heating medium outlet. When the equipment is shut down, steam or hot water is introduced from the heating medium inlet to heat the whole heat exchanger, so that the heat exchanger is kept at a certain temperature, the medium is prevented from crystallizing after the temperature is reduced, the first heat exchange channel and the second heat exchange channel are prevented from being blocked, and the influence on restarting of the heat exchanger is avoided.

Description

Technical Field

[0001] The utility model relates to the field of physics, in particular to a heat exchange technology, in particular to a heat exchanger capable of preventing medium from crystallizing. Background Art

[0002] A heat exchanger is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements. It is an industrial application of convective heat transfer and heat conduction. The heat exchanger in the prior art has two heat exchange channels. When the heat exchanger is shut down, the temperature drops, causing some low-temperature, easily crystallized media to crystallize and block the heat exchange channels, affecting the subsequent restart of the heat exchanger. Summary of the invention

[0003] The utility model aims to provide a heat exchanger capable of preventing medium from crystallizing, and the heat exchanger capable of preventing medium from crystallizing is intended to solve the technical problem in the prior art that medium at low temperature is prone to crystallization and clogging the heat exchanger.

[0004] The utility model discloses a heat exchanger capable of preventing medium crystallization, comprising a shell, wherein the shell comprises a first plate, a second plate, a third plate, a fourth plate, a fifth plate and a sixth plate, wherein the first plate is adjacent to the second plate, the first plate is opposite to the third plate, the second plate is opposite to the fourth plate, the fifth plate and the sixth plate are adjacent to the first plate and the second plate, the sixth plate and the fifth plate are opposite to each other, the first plate is provided with a first medium inlet and a first medium outlet, the second plate is provided with a second medium inlet and a second medium outlet, a core body is provided in the shell, a first heat exchange channel and a second heat exchange channel are provided in the core body, two ends of the first heat exchange channel are respectively communicated with the first medium inlet and the first medium outlet, two ends of the second heat exchange channel are respectively communicated with the second medium inlet and the second medium outlet, a heating channel is respectively provided in the first plate, the second plate, the third plate and the fourth plate, a heating medium inlet and a heating medium outlet are respectively provided on the surface of the first plate, the second plate, the third plate and the fourth plate, and two ends of the heating channel are respectively communicated with the heating medium inlet and the heating medium outlet.

[0005] Furthermore, the heating channel is tortuous, so that the heating medium therein can fully heat the heat exchanger.

[0006] Furthermore, the cross-section of the heating channel is circular or semicircular.

[0007] Compared with the prior art, the utility model has a positive and obvious effect. When the equipment is shut down, steam or hot water is introduced from the heating medium inlet to heat the heat exchanger as a whole, so that the heat exchanger maintains a certain temperature, avoids crystallization of the medium after the temperature drops, prevents clogging of the first heat exchange channel and the second heat exchange channel, and avoids affecting the restart of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view schematic diagram of a heat exchanger capable of preventing medium crystallization according to the utility model.

[0009] Figure 2 It is a top view schematic diagram of a heat exchanger capable of preventing medium crystallization according to the utility model.

[0010] Figure 3 It is a side view schematic diagram of a heat exchanger capable of preventing medium crystallization according to the utility model.

[0011] Figure 4 It is a front view schematic diagram of a first flat plate in a heat exchanger capable of preventing medium crystallization according to the utility model.

[0012] Figure 5 It is a schematic side view of a first flat plate in a heat exchanger capable of preventing medium crystallization according to the utility model. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0014] like Figure 1-Figure 5As shown, a heat exchanger capable of preventing medium crystallization of the utility model comprises a shell, wherein the shell comprises a first plate 1, a second plate 2, a third plate 3, a fourth plate 4, a fifth plate 5 and a sixth plate 6, wherein the first plate 1 is arranged adjacent to the second plate 2, the first plate 1 and the third plate 3 are arranged opposite to each other, the second plate 2 and the fourth plate 4 are arranged opposite to each other, the fifth plate 5 and the sixth plate 6 are arranged adjacent to the first plate 1 and the second plate 2, the sixth plate 6 is arranged opposite to the fifth plate 5, the first plate 1 is provided with a first medium inlet 7 and a first medium outlet 8, the second plate 2 is provided with a second medium inlet 9 and a second medium outlet 10, and the shell comprises a plurality of plates. A core body (not shown) is provided, in which a first heat exchange channel and a second heat exchange channel are provided, two ends of the first heat exchange channel are respectively connected to a first medium inlet 7 and a first medium outlet 8, and two ends of the second heat exchange channel are respectively connected to a second medium inlet 9 and a second medium outlet 10, a heating channel 11 is respectively provided in the first plate 1, the second plate 2, the third plate 3, and the fourth plate 4, and a heating medium inlet 12 and a heating medium outlet 13 are respectively provided on the surface of the first plate 1, the second plate 2, the third plate 3, and the fourth plate 4, and two ends of any heating channel 11 are respectively connected to a heating medium inlet 12 and a heating medium outlet 13.

[0015] Furthermore, the heating channel 11 is in a tortuous shape, so that the heating medium therein can fully heat the heat exchanger.

[0016] Furthermore, the radial cross section of the heating channel 11 is circular or semicircular.

[0017] Specifically, the shell, the first plate 1, the second plate 2, the third plate 3, the fourth plate 4, the fifth plate 5, the sixth plate 6, the core, the first heat exchange channel, the second heat exchange channel, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described herein.

[0018] The working principle of this embodiment:

[0019] The cold and hot media enter the first heat exchange channel and the second heat exchange channel of the heat exchanger from the first medium inlet 7 and the second medium inlet 9 respectively, and flow out from the first medium outlet 8 and the second medium outlet 10 after heat exchange.

[0020] When the equipment is shut down, steam or hot water is introduced from the heating medium inlet 12 to heat the entire heat exchanger so that the heat exchanger maintains a certain temperature to prevent the medium from crystallizing after the temperature drops, to prevent the first heat exchange channel and the second heat exchange channel from being blocked, and to avoid affecting the restart of the heat exchanger.

Claims

1. A heat exchanger capable of preventing medium crystallization, characterized in that: The invention comprises a shell, wherein the shell comprises a first plate, a second plate, a third plate, a fourth plate, a fifth plate and a sixth plate, wherein the first plate is adjacent to the second plate, the first plate is opposite to the third plate, the second plate is opposite to the fourth plate, the fifth plate and the sixth plate are adjacent to the first plate and the second plate, the sixth plate and the fifth plate are opposite to each other, the first plate is provided with a first medium inlet and a first medium outlet, the second plate is provided with a second medium inlet and a second medium outlet, a core is provided in the shell, a first heat exchange channel and a second heat exchange channel are provided in the core, two ends of the first heat exchange channel are respectively communicated with the first medium inlet and the first medium outlet, two ends of the second heat exchange channel are respectively communicated with the second medium inlet and the second medium outlet, a heating channel is respectively provided in the first plate, the second plate, the third plate and the fourth plate, a heating medium inlet and a heating medium outlet are respectively provided on the surface of the first plate, the second plate, the third plate and the fourth plate, and two ends of the heating channel are respectively communicated with the heating medium inlet and the heating medium outlet.

2. A heat exchanger capable of preventing medium crystallization according to claim 1, characterized in that: The heating channel is in a tortuous shape, so that the heating medium therein can fully heat the heat exchanger.

3. A heat exchanger capable of preventing medium crystallization according to claim 1, characterized in that: The cross section of the heating channel is circular or semicircular.

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