Heat exchange device

Abstract

The utility model provides a heat exchange device. The heat exchange device comprises a heat exchanger body and a filter bin detachably connected to the top of the heat exchanger body. The heat exchanger body comprises an outer cylinder and an inner cylinder connected into the outer cylinder in a sealed mode, a side cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and a hot side inlet is formed in the side cavity. The inner cylinder comprises a first cavity communicating with the side cavity and a second cavity located above the first cavity, the multiple heat exchange pipes are installed in the second cavity, and a preset gap is formed between every two heat exchange pipes. The end, facing the first cavity, of each heat exchange pipe communicates with the first cavity, the end, deviating from the first cavity, of each heat exchange pipe communicates with the filtering bin, and a hot side outlet is detachably formed in the side, away from the heat exchange pipes, of the filtering bin. The second cavity is provided with a cold side inlet and a cold side outlet which can communicate with the outside of the heat exchanger body. The vacuum cooling device is simple and reasonable in structure, convenient and reliable, gas impurities can be effectively filtered while gas is cooled in a vacuum environment so as to protect a downstream medium channel communicated with a hot side outlet, and energy consumption is reduced.

Description

Technical Field

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

[0002] A heat exchanger, also known as a heat exchanger, is a device that can transfer part of the heat of a hot fluid to a cold fluid. It plays an important role in chemical, petroleum, power, food and other industrial production. It can also be used as a heater, cooler, condenser, reboiler, etc. and is widely used.

[0003] For example, the patent with publication number CN201203370Y discloses a tubular heat exchanger, which includes a heat exchanger body and a tube-side inlet component and a tube-side outlet component respectively connected to the front and rear of the heat exchanger body. The heat exchanger body includes a shell, a front-end tube sheet located at the front end of the shell and connected to the shell, and a rear-end tube sheet located behind the front-end tube sheet and parallel to the front-end tube sheet and connected to the shell. At least one of the front-end tube sheet and the rear-end tube sheet is connected to the shell in a piston-like manner and includes several sub-tube sheets assembled together, thereby dispersing and eliminating stress well, making the tubular heat exchanger work stably and reliably. For another example, the patent with publication number CN101576355B discloses a high-temperature tubular heat exchanger, which includes a heat exchanger body and a tube-side inlet component and a tube-side outlet component respectively connected to the front and rear of the heat exchanger body. The tube-side inlet components and tube-side outlet components at the front and rear of the heat exchanger body, the heat exchanger body includes a shell, a front-end tube sheet located at the front end of the shell and connected to the shell, a rear-end tube sheet located behind the front-end tube sheet and parallel to the front-end tube sheet and connected to the shell, and heat exchange tubes located in the shell and communicating with the front-end tube sheet and the rear-end tube sheet. The tube-side inlet components and the tube-side outlet components are connected to the heat exchange tubes. The area between the heat exchange tubes is called the tube room. The front and rear parts of the heat exchanger body are respectively provided with shell-side outlet components and shell-side inlet components that are the same as the tube rooms. At least one of the front-end tube sheet and the rear-end tube sheet is connected to the shell in a piston sliding manner and includes several sub-tube sheets assembled together, thereby effectively dissipating and eliminating stress, making the high-temperature tube heat exchanger stable and reliable in operation.

[0004] However, none of them solve the problem of gas heat exchange in a vacuum environment, nor the problem of impurity gas filtering. In actual applications, the lack of a filtering structure often leads to abnormal problems such as heat exchanger blockage and failure. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main purpose of the present invention is to provide a heat exchange device. The heat exchange device provided has a simple and reasonable structure, is convenient and reliable, and can effectively filter gas impurities while cooling the gas in a vacuum environment to protect the downstream medium channel connected to the hot side outlet, thereby reducing energy consumption.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] The utility model provides a heat exchange device, which comprises a heat exchanger body and a filter bin detachably connected to the top of the heat exchanger body; wherein,

[0008] The heat exchanger body includes an outer tube and an inner tube; the inner tube is sealed and connected to the outer tube, and a side chamber is formed between the inner wall of the outer tube and the outer wall of the inner tube, and the side chamber is provided with a hot side inlet;

[0009] The inner cylinder includes a first chamber connected to the side chamber, and a second chamber located above the first chamber. A plurality of heat exchange tubes are installed in the second chamber with a preset gap between each of them; one end of each heat exchange tube facing the first chamber is connected to the first chamber, and one end of each heat exchange tube facing away from the first chamber is connected to the filter bin; a hot side outlet is detachably provided on a side of the filter bin away from the heat exchange tube; the second chamber is also provided with a cold side inlet and a cold side outlet that can be connected to the outside of the heat exchanger body.

[0010] As a further description of the above technical solution, O-rings are provided between the end faces of the heat exchanger body and the filter bin, and between the end faces of the filter bin and the hot side outlet.

[0011] As a further description of the above technical solution, the heat exchanger body and the filter chamber, as well as the filter chamber and the hot side outlet are fastened together by a bolt connection pair.

[0012] As a further description of the above technical solution, a plurality of through holes are provided on the wall of the inner cylinder along its radial direction for connecting the side chamber and the first chamber.

[0013] As a further description of the above technical solution, the plurality of through holes are arranged equidistantly along the circumference of the inner cylinder.

[0014] As a further description of the above technical solution, in the height direction of the heat exchanger body, the height of the cold side inlet is lower than the height of the cold side outlet.

[0015] As a further description of the above technical solution, in the height direction of the heat exchanger body, the filter element in the filter bin is located between the heat exchange tube and the hot side outlet.

[0016] As a further description of the above technical solution, a buffer plate is further provided on the outer wall of the inner cylinder at a position directly opposite to the hot side inlet.

[0017] As a further description of the above technical solution, both ends of the outer cylinder and the inner cylinder are sealed and connected by welding.

[0018] As a further description of the above technical solution, the heat exchange body includes a base detachably connected to the outer cylinder, and a side of the base facing away from the outer cylinder is circumferentially provided with multiple anchor bolts so as to be fixedly connected to the installation ground.

[0019] By means of the above technical solutions, the outstanding effects of the present invention are:

[0020] The heat exchanger of the utility model is provided with a heat exchange device comprising a heat exchanger body and a filter bin detachably connected to the top of the heat exchanger body; the heat exchanger body comprises an outer cylinder and an inner cylinder; the inner cylinder is sealed and connected to the outer cylinder, and a side chamber is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the side chamber is provided with a hot side inlet; the inner cylinder comprises a first chamber connected to the side chamber, and a second chamber located above the first chamber, and a plurality of heat exchange tubes are installed in the second chamber, and a preset gap is formed between each of the two; one end of each heat exchange tube facing the first chamber is connected to the first chamber, and one end of each heat exchange tube facing away from the first chamber is connected to the filter bin, and the side of the filter bin away from the heat exchange tube is detachably provided with a hot side outlet; the second chamber is also provided with a cold side inlet and a cold side outlet that can be connected to the outside of the heat exchanger body; thus, the hot side inlet and the hot side outlet are connected by the first chamber, the heat exchange tube and the filter bin, and the cold side inlet is connected The cold side inlet and the cold side outlet are connected by a second chamber, so that the two heat exchange media can complete heat exchange in the heat exchanger body. The heat exchange medium flowing into the heat exchanger body from the hot side inlet needs to pass through the filter bin and then flow out from the hot side outlet after the heat exchange is completed, so as to effectively filter out the impurities it carries (for example, the heat exchange medium is gas, and the impurities can be dust particles, etc.), making it relatively clean, and then flow into the downstream medium channel through the hot side outlet, reducing the contamination and adhesion of impurities in the downstream medium channel, and ensuring the normal working energy consumption of the components in the downstream medium channel; wherein, the filter bin is independent of the heat exchanger body and the hot side outlet. If the internal filter component is damaged or there are too many impurities in the bin, whether it is replacing the damaged component or cleaning the impurities in the bin, it is convenient and easy, and will not affect the use of the heat exchanger body, so it has higher interchangeability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the external structure of the heat exchange device in an embodiment of the present utility model;

[0022] Figure 2 This is another schematic diagram of the external structure of the heat exchange device in an embodiment of the present utility model;

[0023] Figure 3 This is a cross-sectional view of the heat exchange device in this novel embodiment;

[0024] Figure 4 It is a perspective view of the heat exchange device in an embodiment of the present utility model.

[0025] Description of Figure Numbers:

[0026] 1. Heat exchanger body; 2. Filter chamber; 3. Outer tube; 4. Inner tube; 5. Side chamber; 6. Hot side inlet; 7. First chamber; 8. Second chamber; 9. Heat exchange tube; 10. Hot side outlet; 11. Cold side inlet; 12. Cold side outlet; 13. Through hole; 14. Filter element; 15. Buffer plate; 16. O-ring; 17. Base; 18. Anchor bolt; 19. Pull rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes the implementation of the present invention based on its overall structure.

[0029] See also Figures 1 to 4 The utility model discloses a heat exchange device, which includes a heat exchanger body 1 and a filter tank 2 detachably connected to the top of the heat exchanger body 1; wherein,

[0030] The heat exchanger body 1 includes an outer tube 3 and an inner tube 4; the inner tube 4 is sealed and connected to the outer tube 3, and a side chamber 5 is formed between the inner wall of the outer tube 3 and the outer wall of the inner tube 4, and the side chamber 5 is provided with a hot side inlet 6;

[0031] The inner cylinder 4 includes a first chamber 7 connected to the side chamber 5, and a second chamber 8 located above the first chamber 7. A plurality of heat exchange tubes 9 are installed in the second chamber 8 with a preset gap between each of them; one end of each heat exchange tube 9 facing the first chamber 7 is connected to the first chamber 7, and one end of each heat exchange tube 9 facing away from the first chamber 7 is connected to the filter bin 2. The filter bin 2 is detachably provided with a hot side outlet 10 on the side away from the heat exchange tube 9; the second chamber 8 is also provided with a cold side inlet 11 and a cold side outlet 12 that can be connected to the outside of the heat exchanger body 1.

[0032] By means of the above structure, the hot side inlet 6 and the hot side outlet 10 are connected by the first chamber 7, the heat exchange tube 9 and the filter chamber 2, and the cold side inlet 11 and the cold side outlet 12 are connected by the second chamber 8, so that the two heat exchange media can complete heat exchange in the heat exchanger body 1. After the heat exchange is completed, the heat exchange medium flowing into the heat exchanger body 1 from the hot side inlet 6 needs to pass through the filter chamber 2 and then flow out from the hot side outlet 10, so that the impurities carried by itself can be effectively filtered (for example, if the heat exchange medium is gas, the impurities can be Dust particles, etc.), making it relatively clean, and then flowing into the downstream medium channel through the hot side outlet 10, reducing the contamination and adhesion of impurities in the downstream medium channel, ensuring the normal working energy consumption of components in the downstream medium channel (such as the vacuum unit oil circuit); wherein, the filter bin 2 is independent of the heat exchanger body 1 and the hot side outlet 10. If the internal filter component is damaged or there are many impurities in the bin, it is convenient and easy to replace the damaged component or clean the impurities in the bin, and it will not affect the use of the heat exchanger body 1, so it has higher interchangeability and practicality.

[0033] See also Figure 3 and Figure 4 Specifically, in this embodiment, in the process of connecting the filter tank 2 with the heat exchanger body 1 and the components constituting the hot side outlet 10, O-rings 16 are respectively provided on the upper and lower end surfaces thereof, so that after connecting it with the heat exchanger body 1 and the components constituting the hot side outlet 10, the overall sealing performance of the heat exchange device is effectively guaranteed to meet the vacuum heat exchange conditions.

[0034] See also Figures 1 to 4Specifically, in this embodiment, the heat exchanger body 1 and the filter chamber 2, as well as the filter chamber 2 and the hot side outlet 10 are fastened together by bolted connection pairs, so that the filter chamber 2 can be easily disassembled and cleaned, and parts can be replaced. For example, when a large amount of dust particles are attached to the filter element 14 provided in the filter chamber 2 due to filtering the heat exchange medium (impurity hot gas) flowing through the filter chamber 2, the bolted connection pair can be directly loosened to clean and replace the filter element 14. It should be understood that in the height direction of the heat exchanger body 1, the filter element 14 in the filter chamber 2 is located between the heat exchange tube 9 and the hot side outlet 10. For example, in this embodiment, Figure 3 and Figure 4 As shown, the filter element 14 is clamped in the filter chamber 2 by a pull rod 19 to filter the heat exchange medium flowing through the filter chamber 2 from bottom to top.

[0035] Please continue reading Figure 3 and Figure 4 Specifically, in this embodiment, a plurality of through holes 13 are provided in the radial direction of the wall of the inner cylinder 4 for connecting the side chamber 5 and the first chamber 7, so that another heat exchange medium (such as condensed water) enters the side chamber 5 from the cold side inlet 11 and then enters the first chamber 7 through the through holes 13, thereby flowing into the plurality of heat exchange tubes 9 connected to the first chamber 7 and exchanging heat with the heat exchange medium (such as impurity hot gas) outside the heat exchange tubes 9.

[0036] Specifically, in this embodiment, the plurality of through holes 13 are arranged equidistantly along the circumference of the inner tube 4. In other words, the plurality of through holes 13 are formed on the side wall of the first chamber 7 so that the heat exchange medium in the side chamber 5 flows evenly into the first chamber 7.

[0037] Specifically, in this embodiment, the cold side inlet 11 and the cold side outlet 12 are respectively connected to the condensation system water inlet pipe and the return pipe outside the heat exchanger body 1, so that the second chamber 8 (located outside the heat exchange tube 9) is filled with condensed water and circulates. Figure 1 、 Figure 2 as well as Figure 4 In the height direction of the heat exchanger body 1, the height of the cold side inlet 11 is lower than the height of the cold side outlet 12. The purpose is to avoid a heat exchange dead corner at the top of the heat exchanger body 1, continuously ensure the heat exchange effect while saving energy consumption.

[0038] See also Figure 3Specifically, in this embodiment, a buffer plate 15 is further provided on the outer wall of the inner cylinder 4 at a position opposite to the hot side inlet 6. For example, it can be made of SUS310S stainless steel and can be directly welded to the outer wall of the inner cylinder 4, thereby effectively avoiding the direct impact of the heat exchange medium (impurity hot air) flowing into the side chamber 5 through the hot side inlet 6 on the outer wall of the inner cylinder 4, thereby ensuring the overall service life of the heat exchange device.

[0039] Please continue reading Figures 1 to 4 Specifically, in this embodiment, the heat exchange body includes a base 17 detachably connected to the outer tube 3, and three anchor bolts 18 are circumferentially provided on a side of the base 17 facing away from the outer tube 3 so as to be fixedly connected to the installation ground.

[0040] Specifically, in this embodiment, the two ends of the outer cylinder 3 and the inner cylinder 4 are sealed and connected by welding; preferably, in order to save costs, the side chamber 5 can be composed of the outer cylinder 3, the inner cylinder 4 and the base 17. To ensure the sealing of the side chamber 5, an O-ring 16 is further provided between the outer cylinder 3 and the base 17 before they are connected by a connecting bolt pair, so that the side chamber 5 can store part of the heat exchange medium under a vacuum environment to provide it to other working conditions requiring high heat exchange medium.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any changes, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat exchange device, characterized in that: It includes a heat exchanger body and a filter tank detachably connected to the top of the heat exchanger body; wherein, The heat exchanger body includes an outer tube and an inner tube; the inner tube is sealed and connected to the outer tube, and a side chamber is formed between the inner wall of the outer tube and the outer wall of the inner tube, and the side chamber is provided with a hot side inlet; The inner cylinder includes a first chamber connected to the side chamber, and a second chamber located above the first chamber. A plurality of heat exchange tubes are installed in the second chamber with a preset gap between each of them; one end of each heat exchange tube facing the first chamber is connected to the first chamber, and one end of each heat exchange tube facing away from the first chamber is connected to the filter bin; a hot side outlet is detachably provided on a side of the filter bin away from the heat exchange tube; the second chamber is also provided with a cold side inlet and a cold side outlet that can be connected to the outside of the heat exchanger body.

2. The heat exchange device according to claim 1, characterized in that: O-type sealing rings are provided between the end faces of the heat exchanger body and the filter bin, and between the end faces of the filter bin and the hot side outlet.

3. The heat exchange device according to claim 2, characterized in that: The heat exchanger body and the filter chamber, as well as the filter chamber and the hot side outlet are fastened by bolt connection pairs.

4. The heat exchange device according to claim 1, characterized in that: The inner cylinder wall is provided with a plurality of through holes along its radial direction for connecting the side chamber and the first chamber.

5. The heat exchange device according to claim 4, characterized in that: The plurality of through holes are arranged at equal intervals along the circumference of the inner cylinder.

6. The heat exchange device according to claim 1, characterized in that: In the height direction of the heat exchanger body, the height of the cold side inlet is lower than the height of the cold side outlet.

7. The heat exchange device according to claim 1, characterized in that: In the height direction of the heat exchanger body, the filter element in the filter bin is located between the heat exchange tube and the hot side outlet.

8. The heat exchange device according to claim 1, characterized in that: A buffer plate is also provided on the outer wall of the inner cylinder at a position facing the hot side inlet.

9. The heat exchange device according to claim 1, characterized in that: The two ends of the outer cylinder and the inner cylinder are sealed and connected by welding.

10. The heat exchange device according to claim 1, characterized in that: The heat exchanger body includes a base detachably connected to the outer cylinder. A side of the base facing away from the outer cylinder is provided with a plurality of anchor bolts along the circumferential direction so as to be fixedly connected to the installation ground.

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