Plate heat exchanger suitable for large temperature difference fluctuation

Abstract

The invention belongs to the technical field of plate heat exchangers, and provides a plate heat exchanger adapting to large temperature difference fluctuation. The plate heat exchanger comprises a plate heat exchanger body and a temperature compensator. The temperature compensator is detachably mounted on the plate heat exchanger main body; the temperature compensator comprises a fixed outer sleeve and a heating piece; at least one fixing outer sleeve is installed on a heat exchange plate of the plate heat exchanger body. The fixed outer sleeve is provided with a bottom cavity, a middle partition plate and a liquid flow cavity, and the middle partition plate divides the fixed outer sleeve into the bottom cavity and the liquid flow cavity; the bottom cavity is provided with at least one circulating opening; the liquid flow cavity is provided with a flow inlet, and the liquid flow cavity is filled with liquid; the heating piece is arranged in the liquid flow cavity and is used for heating liquid in the liquid flow cavity; the bottom cavity of the fixing outer sleeve penetrates through a heat exchange plate of the plate heat exchanger body. The device can be suitable for the working condition with large temperature difference fluctuation, and the plate heat exchanger body is effectively protected; therefore, the device is suitable for industrial popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of plate heat exchangers, and particularly to a plate heat exchanger adapted to large temperature difference fluctuations. Background Art

[0002] In current application scenarios, for heat exchange conditions with a large temperature difference, there is an obvious thermal stress expansion situation, which will have a great impact on the operation of the plate heat exchanger.

[0003] In view of this, we propose a plate heat exchanger adapted to large temperature difference fluctuations, which effectively fills the market gap through a unique compensation design. Summary of the Invention

[0004] Aiming at the defects in the prior art, the present invention provides a plate heat exchanger adapted to large temperature difference fluctuations to enable continuous use under heat exchange conditions with a large temperature difference.

[0005] A plate heat exchanger adapted to large temperature difference fluctuations provided by the present invention includes: a plate heat exchanger main body; and a temperature compensator; the temperature compensator is detachably installed on the plate heat exchanger main body; the temperature compensator includes a fixed outer sleeve and a heating element; the fixed outer sleeve is installed on the heat exchange plates of the plate heat exchanger main body at not less than one place; the fixed outer sleeve is provided with a bottom cavity, an intermediate partition and a liquid flow cavity, wherein the intermediate partition divides the fixed outer sleeve into a bottom cavity and a liquid flow cavity; the bottom cavity is provided with not less than one through port; the liquid flow cavity is provided with an inlet port, and a liquid is filled in the liquid flow cavity; the heating element is arranged in the liquid flow cavity and is used for heating the liquid in the liquid flow cavity. The bottom cavity of the fixed outer sleeve penetrates through the heat exchange plates of the plate heat exchanger main body.

[0006] Further, there are two through ports, which are respectively arranged in opposite directions of the bottom cavity and are higher than the heat exchange plates in the plate heat exchanger main body. In actual operation, the purpose of this design is to facilitate ventilation and heat dissipation. In this way, when encountering high temperature, the through ports can be opened for heat dissipation.

[0007] Further, it further includes a circulation part, and the liquid flow cavity is further provided with an outlet port; one end of the circulation part communicates with the outlet port, and the other end of the circulation part communicates with the inlet port; the circulation part is installed on the fixed outer sleeve. In actual operation, the purpose of this design is to realize liquid flow exchange, so that better heat exchange can be carried out for high temperature situations.

[0008] Furthermore, the circulation part includes a liquid tank, liquid pipes and a liquid pump; there are two liquid pipes, and one end of one liquid pipe communicates with one end of the liquid pump; the other end of the liquid pipe communicates with the inflow port; one end of the other liquid pipe communicates with the outflow port, and the other end communicates with the liquid tank; the other end of the liquid pump communicates with the liquid tank. In practical applications, the purpose of this design is to facilitate the flow of the liquid flow, so that the cooling effect of the liquid flow cavity can be continuously maintained, thereby realizing the temperature compensation of the plate heat exchanger body and avoiding its overheating.

[0009] Furthermore, the temperature compensator further includes an exhaust fan, which is installed at one of the circulation ports and is used to exhaust the air flow in the bottom cavity. In practical applications, in this design, the exhaust fan design is used to directly exhaust the hot air flow at the bottom cavity of the fixed outer sleeve. The temperature of this air flow is also caused by the heat exchange plate of the plate heat exchanger body. Therefore, this design can directly exhaust the high-temperature air flow and effectively realize the temperature compensation; in this way, it can form a fluctuating temperature compensation for high-temperature differences together with the above-mentioned liquid flow cavity and circulation part, and effectively realize the working conditions under high-temperature conditions.

[0010] Furthermore, the temperature compensator further includes an opening and closing valve, which is installed at the other circulation port. In practical applications, this design is generally opened under high-temperature conditions to facilitate heat dissipation for temperature compensation, and closed under low-temperature conditions to keep warm for temperature compensation.

[0011] Furthermore, the heating element includes an electric heating copper pipe, one end of which is installed in the liquid flow cavity, and the other end of the electric heating copper pipe communicates with an external power source. In practical applications, the purpose of this design is to further meet the heat compensation under low-temperature conditions. In actual work, the liquid pump is turned off and the electric heating copper pipe is started to heat the liquid flow in the liquid flow cavity to make it warm up. In this way, through the intermediate partition, continuous heat radiation can be realized on the heat exchange plate of the plate heat exchanger body. On the one hand, it avoids the rapid temperature rise of the plate heat exchanger body caused by direct contact. On the other hand, the adopted non-contact heating effect makes the overall plate heat exchanger body have an extended working time under low-temperature conditions, effectively improving the overall utilization rate.

[0012] Furthermore, the fixed outer sleeve is made of metal plates. In practical applications, this design is made of aluminum alloy, and this material is easy to obtain.

[0013] As can be seen from the above technical solutions, the beneficial effects of a plate heat exchanger provided by the present invention that adapts to large temperature difference fluctuations: (1)In practical applications, the design of installing the temperature compensator to be adopted on the main body of the plate heat exchanger effectively solves the influence on the main body of the plate heat exchanger under the condition of high temperature difference, and improves the overall actual service life of the main body of the plate heat exchanger; (2)Moreover, on the other hand, the temperature compensator adopted is designed with a double-chamber structure of a bottom chamber and a liquid flow chamber, so that the heat change of the main body of the plate heat exchanger has little influence on the temperature compensator. The bottom chamber is designed as an empty chamber, and the liquid flow chamber is designed as a fluid chamber; it can effectively realize the influence on the temperature change of the main body of the plate heat exchanger through a liquid with a low specific heat capacity; (3)Among them, under high-temperature working conditions, the liquid flow chamber absorbs heat; to realize the temperature compensation of the main body of the plate heat exchanger; under low-temperature working conditions, by heating the liquid in the liquid flow chamber, the liquid flow chamber can dissipate heat to the bottom chamber, and the bottom chamber can effectively affect the heat exchange plates of the main body of the plate heat exchanger. In this way, the temperature compensation of the main body of the plate heat exchanger can be realized under low-temperature working conditions; thus, the separate compensation under high-temperature and low-temperature working conditions is realized, effectively improving the overall utilization effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for the specific embodiments or the description of the prior art. In all the drawings, the components or parts are not necessarily drawn to scale.

[0015] Figure 1 FIG. 1 is a front view structural schematic diagram of a plate heat exchanger adapted to large temperature difference fluctuations provided by an embodiment of the present invention; Figure 2 FIG. Figure 1 is an enlarged structural schematic diagram of part A shown in FIG. Figure 3 FIG. Figure 1 is an enlarged structural schematic diagram of part B shown in FIG. Figure 4 FIG. Figure 1 is an enlarged structural schematic diagram of part C shown in FIG. Figure 5 FIG. Figure 1 is an enlarged structural schematic diagram of part D shown in FIG. Reference numerals: Main body of plate heat exchanger 1, heat exchange plate 101, temperature compensator 2, fixed outer sleeve 21, bottom chamber 211, intermediate partition 212, liquid flow chamber 213, circulation port 2101, inlet port 2131, outlet port 2132, heating element 22, electric heating copper tube 221, exhaust fan 23, opening and closing valve 24, circulation part 3, liquid tank 31, liquid pipe 32, liquid pump 33. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0017] The embodiment is basically as shown in the attached Figures 1 to 5 drawing: As Figure 1 - Figure 5 shown, a plate heat exchanger adapted to large temperature difference fluctuations provided in this embodiment can be continuously used under heat exchange conditions with a large temperature difference.

[0018] A plate heat exchanger adapted to large temperature difference fluctuations provided by the present invention includes: a plate heat exchanger main body 1; and a temperature compensator 2; the temperature compensator 2 is detachably installed on the plate heat exchanger main body 1; the temperature compensator 2 includes a fixed outer sleeve 21 and a heating element 22; the fixed outer sleeve 21 is installed on the heat exchange plate 101 of the plate heat exchanger main body 1 at not less than one place; the fixed outer sleeve 21 is provided with a bottom cavity 211, an intermediate partition 212 and a liquid flow cavity 213, wherein the intermediate partition 212 divides the fixed outer sleeve 21 into a bottom cavity 211 and a liquid flow cavity 213; the bottom cavity 211 is provided with not less than one through hole 2101; the liquid flow cavity 213 is provided with an inlet 2131, and a liquid is filled in the liquid flow cavity 213; the heating element 22 is arranged in the liquid flow cavity 213 and is used for heating the liquid in the liquid flow cavity 213. Wherein the bottom cavity 211 of the fixed outer sleeve 21 penetrates through the heat exchange plate 101 of the plate heat exchanger main body 1. In actual use, the design of adding the temperature compensator 2 to the plate heat exchanger main body effectively solves the influence on the plate heat exchanger main body under high temperature difference conditions and improves the overall actual service life of the plate heat exchanger main body; moreover, on the other hand, the temperature compensator 2 adopted is designed with a double cavity structure of a bottom cavity 211 and a liquid flow cavity 213, so that the change of heat in the plate heat exchanger main body 1 has little influence on the temperature compensator 2, and the bottom cavity 211 is designed as a cavity and the liquid flow cavity 213 is designed as a fluid cavity; it can effectively realize the influence on the temperature change of the plate heat exchanger main body 1 through a liquid with a low specific heat capacity; wherein, under high temperature conditions, the liquid flow cavity 213 absorbs heat; to realize the temperature compensation of the plate heat exchanger main body 1; under low temperature conditions, by heating the liquid in the liquid flow cavity 213, the liquid flow cavity 213 can dissipate heat to the bottom cavity 211, and the bottom cavity 211 can effectively affect the heat exchange plate 101 of the plate heat exchanger main body 1. In this way, the temperature of the plate heat exchanger main body 1 can be compensated under low temperature conditions; thereby realizing the respective compensations under high temperature conditions and low temperature conditions, and effectively improving the overall utilization effect of the device.

[0019] In this embodiment, there are two circulation ports 2101, which are respectively arranged in opposite directions of the bottom cavity 211 and are higher than the heat exchange plates 101 in the plate heat exchanger body 1. In actual use, the purpose of this design is to facilitate ventilation and heat dissipation. In this way, when encountering high temperature, the circulation ports 2101 can be opened for heat dissipation.

[0020] In this embodiment, a circulation part 3 is further included. The liquid flow cavity 213 is further provided with an outflow port 2132; one end of the circulation part 3 communicates with the outflow port 2132, and the other end of the circulation part 3 communicates with the inflow port 2131; wherein the circulation part 3 is installed on the fixed outer sleeve 21. In actual use, the purpose of this design is to realize liquid flow exchange. In this way, better heat exchange can be carried out for high-temperature situations.

[0021] In this embodiment, the circulation part 3 includes a liquid tank 31, a liquid pipe 32 and a liquid pump 33; there are two liquid pipes 32, and one end of one liquid pipe 32 communicates with one end of the liquid pump 33; the other end of the liquid pipe 32 communicates with the inflow port 2131; wherein one end of the other liquid pipe 32 communicates with the outflow port 2132 and the other end communicates with the liquid tank 31; the other end of the liquid pump 33 communicates with the liquid tank 31. In actual use, the purpose of this design is to facilitate the flow of the liquid flow. In this way, the cooling effect of the liquid flow cavity 213 can be continuously maintained, thereby realizing the temperature compensation of the plate heat exchanger body 1 and avoiding its too high temperature.

[0022] In this embodiment, the temperature compensator 2 further includes an exhaust fan 23, which is installed at one of the circulation ports 2101 and is used to discharge the air flow in the bottom cavity 211. In actual use, in this design, the exhaust fan 23 design adopted is to directly discharge the hot air flow at the bottom cavity 211 of the fixed outer sleeve 21, and the temperature of this air flow is also caused by the heat exchange plates 101 of the plate heat exchanger body 1. Therefore, this design can directly discharge the high-temperature air flow and effectively realize the temperature compensation; in this way, together with the above-mentioned liquid flow cavity 213 and the circulation part 3, it can constitute a fluctuating temperature compensation for high-temperature temperature differences, effectively realizing the working conditions under high-temperature conditions.

[0023] In this embodiment, the temperature compensator 2 further includes an opening and closing valve 24, which is installed at the other circulation port 2101. In actual use, this design is generally opened under high-temperature working conditions to facilitate heat dissipation for temperature compensation, and closed under low-temperature working conditions for heat preservation for temperature compensation.

[0024] In this embodiment, the heating element 22 includes an electric heating copper tube 221. One end of the electric heating copper tube 221 is installed in the liquid flow cavity 213, and the other end of the electric heating copper tube 221 communicates with an external power supply. In actual use, this design is to further meet the heat compensation under low-temperature working conditions. In actual work, the liquid pump 33 is turned off, and the electric heating copper tube 221 is started to heat the liquid flow in the liquid flow cavity 213 to raise its temperature. In this way, through the intermediate partition 212, sustainable heat radiation can be continuously realized on the heat exchange plate 101 of the plate heat exchanger main body 1. On the one hand, it avoids the rapid temperature rise of the plate heat exchanger main body 1 caused by direct contact. On the other hand, the adopted non-contact temperature rise effect enables the overall plate heat exchanger main body 1 to have an extended working time under low-temperature working conditions, effectively improving the overall utilization rate.

[0025] In this embodiment, the fixed outer sleeve 21 is made of a metal plate. In actual use, this design is made of aluminum alloy, and this material is easily obtained.

[0026] In summary, the plate heat exchanger adapted to large temperature difference fluctuations not only has a reasonable design but also is easy to operate. It can realize the temperature compensation of the plate heat exchanger main body 1 under low-temperature and high-temperature working conditions respectively, and can be applied to working conditions with large temperature difference fluctuations, effectively protecting the plate heat exchanger main body 1. Therefore, this device is suitable for industry promotion.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A plate heat exchanger adapted to large temperature fluctuations, characterized in that: include: Plate heat exchanger body; and Temperature compensator; the temperature compensator is detachably mounted on the plate heat exchanger body; the temperature compensator comprises a fixed jacket and a heating element; the fixed jacket is mounted on the heat exchange plate of the plate heat exchanger body at least at one place; The fixed outer sleeve is provided with a bottom cavity, a middle partition and a liquid flow cavity, wherein the middle partition divides the fixed outer sleeve into the bottom cavity and the liquid flow cavity; the bottom cavity is provided with at least one flow opening; the liquid flow cavity is provided with a flow inlet, and the liquid flow cavity is filled with liquid; the heating element is arranged in the liquid flow cavity and is used to heat the liquid in the liquid flow cavity; The bottom cavity of the fixed jacket passes through the heat exchange plate of the plate heat exchanger body.

2. A plate heat exchanger adapted to large temperature fluctuations according to claim 1, characterized in that: The flow openings are provided at two locations, and are respectively arranged in opposite directions of the bottom cavity and higher than the heat exchange plate in the plate heat exchanger body.

3. A plate heat exchanger adapted to large temperature fluctuations according to claim 1, characterized in that: It also includes a circulation part, and the liquid flow cavity is also provided with an outlet; one end of the circulation part is communicated with the outlet, and the other end of the circulation part is communicated with the inlet; wherein the circulation part is installed on the fixed sleeve.

4. A plate heat exchanger adapted to large temperature fluctuations according to claim 3, characterized in that: The circulation part includes a liquid tank, a liquid pipe and a liquid pump; the liquid pipe is provided at two locations, and one end of the liquid pipe at one location is communicated with one end of the liquid pump; the other end of the liquid pipe is communicated with the inlet; one end of the liquid pipe at another location is communicated with the outlet, and the other end is communicated with the liquid tank; the other end of the liquid pump is communicated with the liquid tank.

5. A plate heat exchanger adapted to large temperature fluctuations according to claim 4, characterized in that: The temperature compensator further comprises an exhaust fan, which is installed at one of the flow openings and is used to exhaust the airflow in the bottom cavity.

6. The plate heat exchanger adapted to large temperature fluctuations according to claim 1, characterized in that: The temperature compensator further comprises an on-off valve, and the on-off valve is installed at another flow port.

7. The plate heat exchanger adapted to large temperature fluctuations according to claim 1, characterized in that: The heating element comprises an electric heating copper tube, wherein one end of the electric heating copper tube is installed in the liquid flow cavity, and the other end of the electric heating copper tube is connected to an external power source.

8. The plate heat exchanger adapted to large temperature fluctuations according to claim 1, characterized in that: The fixed jacket is made of metal sheet.

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