Honeycomb type phase change heat storage and exchange dual-purpose heat exchanger

Abstract

The honeycomb type phase change heat storage and exchange dual-purpose heat exchanger effectively achieves better heat exchange efficiency and comprises a shell, a baffle is fixedly connected to the interior of the shell and divides the interior of the shell into an energy storage cavity and a heat exchange cavity, a connecting plate is fixedly connected to the interior of the heat exchange cavity, and the connecting plate is fixedly connected to the interior of the shell. A connecting plate is arranged in the heat exchange cavity, the connecting plate divides the heat exchange cavity into a first cavity and a second cavity, first heat insulation layers are arranged on the inner walls of the second cavity and the second cavity, a plurality of energy storage modules used for storing heat are fixedly connected into the energy storage cavity, and a plurality of heat exchange pipes are arranged in the energy storage cavity. The device is simple and convenient to operate, effectively facilitates operation of workers, reduces external heat dissipation of the whole device, improves the heat storage capacity of the whole device, achieves better heat exchange efficiency, improves the heat exchange efficiency, and facilitates monitoring of heat exchange of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage heat exchange, and relates to a honeycomb-type phase change energy storage and heat exchange dual-purpose heat exchanger. Background Art

[0002] At present, energy storage technologies are widely used in fields such as solar water heaters, solar collectors, and industrial waste heat recovery to improve energy utilization efficiency. Common energy storage devices mainly include water energy storage devices and phase change energy storage devices. In comparison, phase change energy storage devices have advantages such as high energy storage density, small volume, and light weight, and thus have attracted much attention. However, existing phase change energy storage devices have problems such as low energy storage efficiency, slow heat exchange speed, and large heat loss. Therefore, a new type of phase change energy storage device is needed to improve energy storage efficiency and heat exchange speed. Summary of the Invention

[0003] In view of the above problems, the present invention proposes a honeycomb-type phase change energy storage and heat exchange dual-purpose heat exchanger, which well solves the problems in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A honeycomb-type phase change energy storage and heat exchange dual-purpose heat exchanger includes a housing. A partition plate is fixedly connected inside the housing, and the partition plate divides the interior of the housing into an energy storage chamber and a heat exchange chamber. A connecting plate is fixedly connected inside the heat exchange chamber, and the connecting plate divides the heat exchange chamber into a first chamber and a second chamber. First heat insulation layers are provided on the inner walls of both the first chamber and the second chamber. A plurality of energy storage modules for storing heat are fixedly connected inside the energy storage chamber. A plurality of heat exchange tubes are provided inside the energy storage chamber, and each heat exchange tube passes through the corresponding energy storage module and communicates with the first chamber and the second chamber.

[0006] Preferably, a heat exchange outlet for outputting materials is communicated with the upper side of the first chamber, a heat exchange inlet for inputting materials is communicated with the lower side of the second chamber, an energy storage inlet for inputting high-temperature fluid is communicated with the front part of the upper side of the energy storage chamber, and an energy storage outlet for outputting high-temperature fluid is communicated with the rear part of the lower side of the energy storage chamber.

[0007] Preferably, a second heat insulation layer is fixedly connected inside the energy storage chamber, and a fixing round head for fixing the heat exchange tubes is fixedly connected to the rear part of the housing.

[0008] Preferably, each energy storage module includes a metal layer, a plurality of metal skeletons, and phase change paraffin. The phase change paraffin is encapsulated inside the metal skeletons, and the metal skeletons are encapsulated inside the metal layer.

[0009] Preferably, the cross-section of the metal framework is a honeycomb regular hexagon, the side length of the honeycomb regular hexagon is 0.1 m to 0.2 m, and the thickness of the metal layer is 1% to 2% of the side length of the honeycomb regular hexagon.

[0010] Preferably, the metal framework is arranged in the front-back direction.

[0011] Preferably, the metal layer includes an arc portion, a flat portion and two sealing plates. The arc portion and the flat portion together form a major arc bow shape, and the two sealing plates clamp the arc portion and the flat portion together to form a hollow cavity structure.

[0012] Preferably, the flat portion is parallel to the horizontal plane, and the upper and lower orientations of every two adjacent metal layers are opposite. Under the action of the metal layers, the high-temperature fluid flows in an S shape.

[0013] Preferably, information modules for detecting fluids are provided at the heat exchange inlet, the heat exchange outlet, the energy storage inlet, and the energy storage outlet.

[0014] Preferably, the information module includes a thermometer and a flowmeter.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention has a partition plate and a first heat insulation layer, which can reduce the heat exchange between the first chamber and the second chamber, and thus can reduce the overall heat loss of the device.

[0017] 2. The present invention has an energy storage module, and two adjacent energy storage modules are arranged in opposite directions, which can enable the high-temperature fluid to flow in an S shape inside the outer shell, increasing the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 is a schematic diagram of the internal structure of the present invention.

[0020] Figure 3 is a schematic diagram of the structure of the energy storage module in the present invention.

[0021] In the figure: 1. housing; 2. partition plate; 3. energy storage chamber; 4. heat exchange chamber; 5. connecting plate; 6. first chamber; 7. second chamber; 8. first heat insulation layer; 9. energy storage module; 10. heat exchange tube; 11. heat exchange outlet; 12. heat exchange inlet; 13. energy storage inlet; 14. energy storage outlet; 15. second heat insulation layer; 16. fixed round head; 17. metal layer; 18. metal framework; 19. phase change paraffin; 20. arc portion; 21. flat portion; 22. sealing plate. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] The following will further describe in detail the specific implementation manners of the present invention in conjunction with the attached Figures 1 to 3 drawings.

[0024] As Figures 1 to 3 shown, the present invention includes a housing 1. In order to achieve better heat exchange efficiency, a partition plate 2 is fixedly connected inside the housing 1. The partition plate 2 divides the interior of the housing 1 into a heat storage cavity 3 and a heat exchange cavity 4. A connecting plate 5 is fixedly connected inside the heat exchange cavity 4. The connecting plate 5 divides the heat exchange cavity 4 into a first chamber 6 and a second chamber 7. First heat insulation layers 8 are provided on the inner walls of both the first chamber 6 and the second chamber 7. A plurality of heat storage modules 9 for storing heat are fixedly connected inside the heat storage cavity 3. A plurality of heat exchange tubes 10 are provided inside the heat storage cavity 3. Each heat exchange tube 10 passes through the corresponding heat storage module 9 and communicates with the first chamber 6 and the second chamber 7;

[0025] Furthermore, as Figures 1 to 3 shown, in order to facilitate the operation of the staff, a heat exchange outlet 11 for outputting materials is communicated with the upper side of the first chamber 6, a heat exchange inlet 12 for inputting materials is communicated with the lower side of the second chamber 7, a heat storage inlet 13 for inputting high-temperature fluid is communicated with the front part of the upper side of the heat storage cavity 3, and a heat storage outlet 14 for outputting high-temperature fluid is communicated with the rear part of the lower side of the heat storage cavity 3;

[0026] During use, the heat storage inlet 13 can be connected to a high-temperature fluid pipeline, so that the high-temperature fluid enters the heat storage cavity 3 through the heat storage inlet 13, and the high-temperature fluid sequentially passes through a plurality of heat storage modules 9. Heat absorption and storage are performed through the heat storage modules 9. Then, the high-temperature fluid flows out through the heat storage outlet 14. After the heat is stored in the heat storage modules 9, heat exchange can be performed on the target fluid through the heat exchange inlet 12 and the heat exchange outlet 11. At this time, the target fluid to be heated can enter the second chamber 7 through the heat exchange inlet 12. At this time, the target fluid in the second chamber 7 will flow into the first chamber 6 through a plurality of heat exchange tubes 10 and then flow out through the heat exchange outlet 11. When the target fluid passes through the heat exchange tubes 10, the high-temperature fluid outside the heat exchange tubes 10 and the heat storage modules 9 will heat the heat exchange tubes 10, thereby heating the target fluid inside the heat exchange tubes 10 to complete the heat exchange operation;

[0027] Therefore, in this design, the heat storage module 9 can separately absorb the heat of the high-temperature fluid for heat absorption operation, and then separately heat the target fluid passing through the heat exchange tube 10 through the heat storage module 9. It is also possible to pass the target fluid through the heat exchange tube 10 while passing the high-temperature fluid, so that the high-temperature fluid and the target fluid can jointly exchange heat with the target fluid.

[0028] Further, as Figures 1 to 3 shown, in order to reduce the external heat dissipation of the overall device, a second heat insulation layer 15 is fixedly connected inside the heat storage cavity 3, and a fixing round head 16 for fixing the heat exchange tube 10 is fixedly connected to the rear part of the housing 1;

[0029] It should be noted that both the first heat insulation layer 8 and the second heat insulation layer 15 are made of heat insulation materials, such as one or more composites of fiberglass, asbestos, rock wool, silicate, aerogel felt, vacuum board, etc. This is prior art and can be selected according to actual needs and cost budgets, and will not be elaborated here;

[0030] During use, the first heat insulation layer 8 can isolate the heat between the first chamber 6 and the second chamber 7, and the second heat insulation layer 15 can isolate the temperature inside and outside the heat storage cavity 3, thereby reducing the external heat loss of the overall device.

[0031] Further, as Figures 1 to 3 shown, in order to increase the heat storage capacity of the overall device, each heat storage module 9 includes a metal layer 17, a plurality of metal skeletons 18, and phase change paraffin 19. The phase change paraffin 19 is encapsulated inside the metal skeleton 18, and the metal skeleton 18 is encapsulated inside the metal layer 17;

[0032] Further, as Figures 1 to 3 shown, in order to achieve better heat exchange efficiency, the cross-section of the metal skeleton 18 is a honeycomb regular hexagon, the side length of the honeycomb regular hexagon is 0.1m - 0.2m, and the thickness of the metal layer 17 is 1% - 2% of the side length of the honeycomb regular hexagon; the metal skeleton 18 is arranged in the front-back direction;

[0033] It should be noted that the phase change paraffin is the energy storage material used in this device. However, it should be further noted that the energy storage material used in this application is not limited to the phase change paraffin, and it can also be one or more composites of paraffin-graphene composite material, sodium acetate trihydrate, lauric acid, composite phase change material, etc. The following is another embodiment of the energy storage material: a phase change heat storage material, which pre-treats the grease and oil sludge generated in oilfield exploitation, separates the organic and inorganic substances in the grease and oil sludge, puts them into a high-temperature reaction kettle for anaerobic high-temperature pyrolysis treatment to obtain a pyrolysis product carbon-based material, cools and reduces the temperature of the obtained material, dries it to form a precursor of the heat storage material, and then combines it with a paraffin phase change material to obtain a composite phase change heat storage material;

[0034] During use, through the metal skeleton 18 arranged in the front-back direction, both the front and rear sides of the cavity structure of each honeycomb regular hexagon can be in contact with the heat exchange material, so that the phase change paraffin 19 inside each metal skeleton 18 can exchange heat with the high-temperature fluid through the metal skeleton 18, increasing the overall heat exchange efficiency.

[0035] Furthermore, as Figures 1 to 3 shown, in order to increase the heat exchange efficiency, the metal layer 17 includes an arc portion 20, a flat portion 21 and two sealing plates 22. The arc portion 20 and the flat portion 21 together form a major arc bow shape, and the two sealing plates 22 clamp the arc portion 20 and the flat portion 21 together to form a hollow cavity structure; the flat portion 21 is parallel to the horizontal plane, and the upper and lower orientations of every two adjacent metal layers 17 are opposite. Under the action of the metal layer 17, the high-temperature fluid flows in an S shape.

[0036] It should be noted that the arc portion 20 and the flat portion 21 together form a major arc bow shape, and the specific definition is as follows:

[0037] A chord divides a circle into two parts, and both parts are bows. A bow is the simplest composite figure;

[0038] Bow: A figure composed of a chord and the arc it subtends is called a bow;

[0039] When the arc of the bow is less than a semi-circle, the term name is "minor arc bow";

[0040] When the arc of the bow is greater than a semi-circle, the term name is "major arc bow";

[0041] During use, due to the combined action of the arc portion 20 and the flat portion 21, the high-temperature fluid can pass through the flat portion 21 and the inner wall of the heat exchange chamber 4. Also, because the upper and lower orientations of every two adjacent metal layers 17 are opposite, the high-temperature fluid can flow in a folded S shape inside the heat exchange chamber 4, increasing the heat exchange efficiency.

[0042] Furthermore, as Figures 1 to 3 shown, in order to facilitate the monitoring of the heat exchange of the device, information modules for detecting fluids are provided at the heat exchange inlet 12, the heat exchange outlet 11, the energy storage inlet 13, and the energy storage outlet 14; the information module includes a thermometer and a flowmeter;

[0043] It should be noted that the thermometer is a prior art, such as the thermometer with the model number TG54, and will not be described in detail here; the flowmeter is a prior art, such as the ultrasonic flowmeter with the model number OPTISONIC 3400, and will not be described in detail here;

[0044] During use, the temperature and flow rate at the heat exchange inlet 12, heat exchange outlet 11, energy storage inlet 13, and energy storage outlet 14 can be monitored through a thermometer and a flow meter, thereby monitoring the overall operating state of the device.

[0045] When the present invention is in use, first, the energy storage inlet 13 can be connected to a high-temperature fluid pipeline, so that the high-temperature fluid enters the energy storage chamber 3 through the energy storage inlet 13, and the high-temperature fluid sequentially passes through a plurality of energy storage modules 9. Heat absorption and energy storage are performed through the energy storage module 9. Then, the high-temperature fluid flows out through the energy storage outlet 14. After heat storage in the energy storage module 9, heat exchange can be performed on the target fluid through the heat exchange inlet 12 and the heat exchange outlet 11. At this time, the target fluid to be heated can enter the second chamber 7 through the heat exchange inlet 12. At this time, the target fluid in the second chamber 7 will flow into the first chamber 6 through a plurality of heat exchange tubes 10 and then flow out through the heat exchange outlet 11. When the target fluid passes through the heat exchange tube 10, the high-temperature fluid outside the heat exchange tube 10 and the energy storage module 9 will heat the heat exchange tube 10, thereby heating the target fluid inside the heat exchange tube 10 to complete the heat exchange operation;

[0046] Therefore, in this design, the high-temperature fluid can be separately heat-absorbed by the energy storage module 9 for heat absorption operation, and then the target fluid passing through the heat exchange tube 10 can be separately heated by the energy storage module 9. It is also possible to pass the target fluid through the heat exchange tube 10 while passing the high-temperature fluid, so that the high-temperature fluid and the target fluid can jointly perform heat exchange on the target fluid.

[0047] The structure of the present invention is novel, the concept is ingenious, the operation is simple and convenient. Through this design, a better heat exchange efficiency is effectively achieved, which facilitates the operation of the staff, reduces the overall external heat dissipation of the device, increases the overall heat storage capacity of the device, realizes a better heat exchange efficiency, increases the heat exchange efficiency, and facilitates the monitoring of the heat exchange of the device.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A honeycomb type phase-change heat exchanger for heat storage and exchange, comprising a shell, characterized in that: A blocking plate is fixedly connected to the interior of the shell, and the blocking plate divides the interior of the shell into an energy storage chamber and a heat exchange chamber. A connecting plate is fixedly connected to the interior of the heat exchange chamber, and the connecting plate divides the heat exchange chamber into a first chamber and a second chamber. The inner walls of the second chamber and the second chamber are both provided with a first heat insulation layer. A plurality of energy storage modules for storing heat are fixedly connected to the interior of the energy storage chamber, and a plurality of heat exchange tubes are provided inside the energy storage chamber, and each heat exchange tube passes through the corresponding energy storage module and is connected to the first chamber and the second chamber.

2. A honeycomb phase-change heat storage and heat exchanger according to claim 1, characterized in that: The upper side of the first chamber is connected to a heat exchange outlet for outputting materials, the lower side of the second chamber is connected to a heat exchange inlet for inputting materials, the front part of the upper side of the energy storage chamber is connected to an energy storage inlet for inputting high-temperature fluid, and the rear part of the lower side of the energy storage chamber is connected to an energy storage outlet for outputting high-temperature fluid.

3. The honeycomb type phase change heat storage and heat exchanger according to claim 1, characterized in that: A second heat insulation layer is fixedly connected to the interior of the energy storage cavity, and a fixing round head for fixing the heat exchange tube is fixedly connected to the rear of the shell.

4. A honeycomb type phase change heat storage and heat exchanger according to claim 3, characterized in that: Each of the energy storage modules includes a metal layer, a plurality of metal skeletons and phase-change wax. The phase-change wax is encapsulated inside the metal skeleton, and the metal skeleton is encapsulated inside the metal layer.

5. The honeycomb type phase change heat storage and heat exchanger according to claim 4, characterized in that: The cross section of the metal skeleton is a honeycomb regular hexagon, the side length of the honeycomb regular hexagon is 0.1m to 0.2m, and the thickness of the metal layer is 1% to 2% of the side length of the honeycomb regular hexagon.

6. The honeycomb type phase change heat storage and heat exchanger according to claim 4, characterized in that: The metal frame is arranged in a front-to-back direction.

7. The honeycomb type phase change heat storage and heat exchanger according to claim 4, characterized in that: The metal layer includes an arc-shaped portion, a plane portion and two sealing plates. The arc-shaped portion and the plane portion together form a major arc shape. The two sealing plates clamp the arc-shaped portion and the plane portion together to form a hollow cavity structure.

8. The honeycomb type phase-change heat storage and heat exchanger according to claim 7, characterized in that: The plane portion is parallel to the horizontal plane, and the upper and lower directions of each two adjacent metal layers are opposite. Under the action of the metal layers, the high-temperature fluid flows in an S shape.

9. The honeycomb type phase-change heat storage and heat exchanger according to claim 2, characterized in that: The heat exchange inlet, heat exchange outlet, energy storage inlet and energy storage outlet are all provided with information modules for detecting the fluid.

10. The honeycomb type phase change heat storage and heat exchanger according to claim 9, characterized in that: The information module includes a thermometer and a flow meter.

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