Heat exchanger and viscose fiber drying equipment

Abstract

The utility model provides a heat exchanger and viscose fiber drying equipment, and relates to the technical field of anhydrous sodium sulphate drying in the viscose fiber industry, a fixing plate is arranged in a heat exchange shell, a heat exchange pipe in the heat exchange shell penetrates through the fixing plate, the fixing plate limits movement of the heat exchange pipe, then vibration of the heat exchange pipe is reduced, and the drying efficiency is improved. Crater cracking caused by vibration of the heat exchange tube is effectively avoided, and the technical problem that in the prior art, vibration of the heat exchange tube in a heater used in the anhydrous sodium sulphate drying process affects the quality of anhydrous sodium sulphate is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium sulphate drying in viscose fiber industry, in particular to a heat exchanger and viscose fiber drying equipment. Background Art

[0002] In the process of drying sodium sulfate in viscose fiber production, an air heater or cooler is used to heat the air, and the hot air is used to heat the sodium sulfate containing water.

[0003] High-temperature steam flows through the finned heating tubes in the heater, and low-temperature air flows outside the fins. The two exchange heat through the finned heat exchange tubes. Because the finned heating tubes are mass-produced and installed during processing, it is difficult to install a fixing plate in the middle. The only fixed points are the welding points between the heat exchange tubes and the upper and lower plates. When the finned heat exchange tubes through which high-temperature steam flows come into contact with low-temperature air, the finned heat exchange tubes expand and contract due to the large temperature difference between the media, causing the finned heat exchange tubes to vibrate greatly, resulting in cracks in the upper and lower welds, allowing steam to enter the air, affecting the quality of alum. Utility Model Content

[0004] The utility model aims to provide a heat exchanger and viscose fiber drying equipment to alleviate the technical problem that the heat exchange tube in the heater used in the drying process of sodium sulphate in the prior art vibrates and affects the quality of sodium sulphate.

[0005] In a first aspect, the heat exchanger provided by the utility model comprises: a heat exchange shell, a heat exchange tube and a fixing plate;

[0006] The heat exchange tube is arranged in the heat exchange shell;

[0007] The fixing plate is arranged in the heat exchange shell;

[0008] The heat exchange tube passes through the fixing plate, and the fixing plate is used to limit the movement of the heat exchange tube.

[0009] In an alternative embodiment,

[0010] The fixing plate is provided with a limiting hole, and the heat exchange tube passes through the limiting hole.

[0011] In an alternative embodiment,

[0012] A plurality of heat exchange tubes are provided, and a plurality of heat exchange tube arrays are arranged in the heat exchange shell.

[0013] In an alternative embodiment,

[0014] The fixing plate includes a plurality of fixing units;

[0015] The fixing units are arranged on both sides of any heat exchange tube, and the two fixing units on both sides of any heat exchange tube surround and form the limiting hole.

[0016] In an alternative embodiment,

[0017] Each of the fixing units has a semicircular hole, and the semicircular holes on the two fixing units located on both sides of the heat exchange tube are arranged opposite to each other to form the limiting hole.

[0018] In an alternative embodiment,

[0019] The surface of the heat exchange tube has a fin area and a fixing area, and the fixing plate is connected to the fixing area of ​​the heat exchange tube.

[0020] In an alternative embodiment,

[0021] The heat exchange tube is located in the fin area and has a plurality of heat dissipation fins.

[0022] In an alternative embodiment,

[0023] The heat exchange housing comprises a heat exchange body, an air inlet body and an air outlet body;

[0024] The plurality of heat exchange tubes are all located in the heat exchange body;

[0025] The fixing plate is connected to the inner wall of the heat exchange body;

[0026] The air inlet body and the air outlet body are both connected to the openings at both ends of the heat exchange body through flange connectors, and the air inlet body and the air outlet body are both gradually contracted toward one end away from the heat exchange body.

[0027] In an alternative embodiment,

[0028] The heat exchange body comprises an upper top plate, a lower bottom plate, a left side plate and a right side plate;

[0029] The upper top plate, the left side plate, the lower bottom plate and the right side plate are connected end to end in sequence;

[0030] The two ends of the heat exchange tube are respectively connected to the upper top plate and the lower bottom plate;

[0031] Two ends of the fixing plate are respectively connected to the left side plate and the right side plate.

[0032] In a second aspect, the viscose fiber drying equipment provided by the utility model comprises the above-mentioned heat exchanger.

[0033] The heat exchanger provided by the utility model has a fixed plate arranged in a heat exchange shell, and the heat exchange tubes in the heat exchange shell pass through the fixed plate. The fixed plate limits the movement of the heat exchange tubes, thereby reducing the vibration of the heat exchange tubes, effectively avoiding the cracking of the welds caused by the vibration of the heat exchange tubes, and alleviating the technical problem in the prior art that the vibration of the heat exchange tubes in the heater used in the drying process of the alum affects the quality of the alum. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A cross-sectional view of the overall structure of the heat exchanger provided in the embodiment of the utility model;

[0036] Figure 2 for Figure 1 It is a structural diagram of AA;

[0037] Figure 3 for Figure 1 It is a schematic diagram of the structure of BB;

[0038] Figure 4 A schematic diagram of the overall structure of a heat exchanger provided in an embodiment of the utility model.

[0039] Icons: 100 - heat exchange shell; 110 - heat exchange body; 111 - upper top plate; 112 - lower bottom plate; 113 - left side plate; 114 - right side plate; 120 - air inlet body; 130 - air outlet body; 140 - flange connector; 200 - heat exchange tube; 210 - cooling fin; 300 - fixing plate; 310 - first fixing unit; 320 - second fixing unit; 330 - limiting hole. DETAILED DESCRIPTION

[0040] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0044] like Figure 1 , Figure 2 As shown, the heat exchanger provided in this embodiment specifically includes: a heat exchange shell 100, a heat exchange tube 200 and a fixing plate 300, which can effectively reduce the vibration of the heat exchange tube 200.

[0045] The heat exchange shell 100 is provided with a heat exchange tube 200, and the fixed plate 300 is provided in the heat exchange shell 100. The heat exchange tube 200 and the fixed plate 300 are arranged vertically, that is, when the heat exchange tube 200 is arranged in the horizontal direction, the fixed plate 300 is arranged in the vertical direction, and when the heat exchange tube 200 is arranged in the vertical direction, the fixed plate 300 is arranged in the horizontal direction, so as to ensure that the heat exchange tube 200 and the fixed plate 300 are arranged vertically.

[0046] The heat exchange tube 200 passes through the fixing plate 300 , that is, the fixing plate 300 is sleeved outside the heat exchange tube 200 , and the fixing plate 300 can limit the movement of the heat exchange tube 200 . Under the restriction of the fixing plate 300 , the heat exchange tube 200 cannot move, thereby reducing the vibration of the heat exchange tube 200 .

[0047] The heat exchanger provided in the present embodiment is provided with a fixing plate 300 in the heat exchange shell 100. The heat exchange tube 200 in the heat exchange shell 100 passes through the fixing plate 300. The fixing plate 300 limits the movement of the heat exchange tube 200, thereby reducing the vibration of the heat exchange tube 200, effectively avoiding the cracking of the weld caused by the vibration of the heat exchange tube 200, and alleviating the technical problem in the prior art that the vibration of the heat exchange tube 200 in the heater used in the drying process of the alum affects the quality of the alum.

[0048] On the basis of the above embodiment, in an optional implementation manner, the fixing plate 300 in the heat exchanger provided in this embodiment is provided with a limiting hole 330 , and the heat exchange tube 200 passes through the limiting hole 330 .

[0049] Specifically, during the manufacturing process of the fixing plate 300, a limiting hole 330 is opened on the fixing plate 300, and the inner diameter of the limiting hole 330 is larger than the outer diameter of the heat exchange tube 200, so that the heat exchange tube 200 can pass through the limiting hole 330. Since the fixing plate 300 is fixed in the heat exchange shell 100, the heat exchange tube 200 passing through the limiting hole 330 is restricted by the fixing plate 300, thereby reducing the vibration of the heat exchange tube 200.

[0050] In an optional embodiment, a plurality of heat exchange tubes 200 are provided, and the plurality of heat exchange tubes 200 are arranged in an array in the heat exchange shell 100 .

[0051] Specifically, a plurality of heat exchange tubes 200 are disposed in the longitudinal direction and a plurality of heat exchange tubes 200 are disposed in the transverse direction to form an array of heat exchange tubes 200. The heat exchange of the array-arranged heat exchange tubes 200 is more uniform.

[0052] In addition, the heat exchange tubes 200 may also be arranged in other ways, such as a plum blossom shape. Different arrangements of the heat exchange tubes 200 may be selected according to actual conditions.

[0053] In an optional embodiment, if Figure 3 As shown, the fixing plate 300 includes a plurality of fixing units; fixing units are provided on both sides of any heat exchange tube 200 , and two fixing units on both sides of any heat exchange tube 200 are arranged to form a limiting hole 330 .

[0054] Specifically, the fixing unit includes a first fixing unit 310 and a second fixing unit 320 , which are respectively located on both sides of the heat exchange tube 200 , that is, a first fixing unit 310 and a second fixing unit 320 are provided on both sides of each heat exchange tube 200 .

[0055] In an optional embodiment, each fixing unit has a semicircular hole, and the semicircular holes on the two fixing units located on both sides of the heat exchange tube 200 are arranged opposite to each other to form a limiting hole 330.

[0056] Specifically, the first fixing unit 310 and the second fixing unit 320 have the same structure, but the directions of the semicircular holes are different. The two semicircular holes are arranged opposite to each other to surround and form the limiting hole 330 .

[0057] In an optional embodiment, the surface of the heat exchange tube 200 has a fin area and a fixing area, and the fixing plate 300 is connected to the fixing area of ​​the heat exchange tube 200 .

[0058] Specifically, the surface of the heat exchange tube 200 is divided into a fin area and a fixed area. The fixed area is located between the fin areas, that is, the fixed area is located in the middle of the two fin areas. The fixing plate 300 is installed at the fixed area position of the heat exchange tube 200.

[0059] In an optional embodiment, the heat exchange tube 200 has a plurality of heat dissipating fins 210 in the fin area.

[0060] It should be noted that the heat dissipation fins 210 are not provided in the fixed area on the surface of the heat exchange tube 200 , but are only provided in the fin area to prevent the heat dissipation fins 210 from affecting the installation of the fixing plate 300 .

[0061] like Figure 4 As shown, in an optional embodiment, the heat exchange shell 100 includes a heat exchange body 110, an air inlet body 120 and an air outlet body 130; multiple heat exchange tubes 200 are located in the heat exchange body 110; the fixed plate 300 is connected to the inner wall of the heat exchange body 110, and the fixed plate 300 and the inner wall of the heat exchange body 110 are connected by welding.

[0062] The air inlet body 120 is specifically configured as an air inlet tube, and the air outlet body 130 is specifically configured as an air outlet tube. The air inlet body 120 and the air outlet body 130 are both connected to the openings at both ends of the heat exchange body 110 through flange connectors 140, and the air inlet body 120 and the air outlet body 130 are both gradually configured to be away from the heat exchange body 110.

[0063] The gas enters the heat exchange body 110 along the air inlet body 120 , and is discharged from the air outlet body 130 after heat exchange.

[0064] In an optional embodiment, the heat exchange body 110 is a square structure, and the heat exchange body 110 specifically includes an upper top plate 111, a lower bottom plate 112, a left side plate 113 and a right side plate 114; the upper top plate 111, the left side plate 113, the lower bottom plate 112 and the right side plate 114 are connected end to end in sequence to form a box-type shape of the heat exchange body 110.

[0065] Both ends of the heat exchange tube 200 are connected to the upper top plate 111 and the lower bottom plate 112 respectively, and the heat exchange tube 200 is connected to the upper top plate 111 and the lower bottom plate 112 by welding.

[0066] Two ends of the fixing plate 300 are connected to the left plate 113 and the right plate 114 respectively, and the fixing plate 300 is connected to the left plate 113 and the right plate 114 by welding.

[0067] The reinforcement methods to reduce the vibration of the heat exchanger are as follows:

[0068] (1) When the heat exchange tube 200 is manufactured, no fins are provided at the reinforcement position. The lack of heat exchange area can be solved by appropriately increasing the length of the pipeline and the fins.

[0069] (2) The fixing plate 300 is cut according to the size of the cavity, and a limit block is opened at the fixed position. The fixing plate 300 is cut in a straight line along the center of the holes in the same row, and the first fixing unit 310, the second fixing unit 320, the third fixing unit, etc. are marked in sequence.

[0070] (3) Weld and fix the fixing plate 300 to the corresponding positions of the side plates on both sides of the heat exchanger;

[0071] (4) Then the reinforced area of ​​the heat exchange tube 200 is placed into the semicircular hole of the first fixing unit 310 and fixed by welding;

[0072] (5) The second fixing unit 320 is connected to the fixed first fixing unit 310 and the heating tube, and is welded to the first fixing unit 310 and the two side panels.

[0073] (6) Then repeat step (5) until the last fixed unit is welded.

[0074] (7) Finally, the upper top plate 111 and the lower bottom plate 112 are welded to the heat exchange tube 200. The upper top plate 111 and the lower bottom plate 112 are welded to the left side plate 113 and the right side plate 114. The upper top plate 111, the lower bottom plate 112, the left side plate 113 and the right side plate 114 are connected and assembled and welded to the flange connector 140 to form the heat exchange body 110.

[0075] (8) Finally, the air inlet body 120, the air exhaust body and the flange connector 140 are welded, and finally the air inlet body 120, the air exhaust body and the heat exchange body 110 are connected and fixed by the flange connector 140, and a high temperature resistant gasket is set at the connection.

[0076] The viscose fiber drying equipment provided in this embodiment includes a heat exchanger.

[0077] Since the technical effect of the viscose fiber drying equipment provided in this embodiment is the same as the technical effect of the heat exchanger provided in the above embodiment, it will not be described in detail here.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A heat exchanger, characterized in that: It comprises: a heat exchange shell (100), a heat exchange tube (200) and a fixing plate (300); The heat exchange tube (200) is arranged in the heat exchange shell (100); The fixing plate (300) is arranged in the heat exchange shell (100); The heat exchange tube (200) passes through the fixing plate (300), and the fixing plate (300) is used to limit the movement of the heat exchange tube (200).

2. The heat exchanger according to claim 1, characterized in that: The fixing plate (300) is provided with a limiting hole (330), and the heat exchange tube (200) passes through the limiting hole (330).

3. The heat exchanger according to claim 2, characterized in that: A plurality of the heat exchange tubes (200) are provided, and the plurality of heat exchange tubes (200) are arranged in an array in the heat exchange shell (100).

4. The heat exchanger according to claim 3, characterized in that The fixing plate (300) comprises a plurality of fixing units; The fixing units are provided on both sides of any heat exchange tube (200), and the two fixing units on both sides of any heat exchange tube (200) surround and form the limiting hole (330).

5. The heat exchanger according to claim 4, characterized in that: Each of the fixing units has a semicircular hole, and the semicircular holes on the two fixing units located on both sides of the heat exchange tube (200) are arranged opposite to each other to form the limiting hole (330).

6. The heat exchanger according to claim 3, characterized in that: The surface of the heat exchange tube (200) has a fin area and a fixing area, and the fixing plate (300) is connected to the fixing area of ​​the heat exchange tube (200).

7. The heat exchanger according to claim 6, characterized in that The heat exchange tube (200) is located in the fin area and has a plurality of heat dissipation fins (210).

8. The heat exchanger according to any one of claims 1 to 7, characterized in that: The heat exchange housing (100) comprises a heat exchange body (110), an air inlet body (120) and an air outlet body (130); The plurality of heat exchange tubes (200) are all located in the heat exchange body (110); The fixing plate (300) is connected to the inner wall of the heat exchange body (110); The air inlet body (120) and the air outlet body (130) are both connected to the openings at both ends of the heat exchange body (110) through flange connectors (140), and the air inlet body (120) and the air outlet body (130) are both arranged to taper toward an end away from the heat exchange body (110).

9. The heat exchanger according to claim 8, characterized in that The heat exchange body (110) comprises an upper top plate (111), a lower bottom plate (112), a left side plate (113) and a right side plate (114); The upper top plate (111), the left side plate (113), the lower bottom plate (112) and the right side plate (114) are connected end to end in sequence; Two ends of the heat exchange tube (200) are respectively connected to the upper top plate (111) and the lower bottom plate (112); Two ends of the fixing plate (300) are respectively connected to the left side plate (113) and the right side plate (114).

10. A viscose fiber drying device, characterized in that: Comprising the heat exchanger according to any one of claims 1 to 9.

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