Shell-and-tube heat exchanger for high-strength air conditioner

Abstract

The invention discloses a high-strength shell-and-tube heat exchanger for an air conditioner, belongs to the technical field of industrial air conditioners, and aims to solve the problem of poor heat exchange efficiency of a tube pass fluid and a shell pass fluid caused by small contact area of the tube pass fluid and the shell pass fluid when the tube pass fluid and the shell pass fluid are in contact. A plurality of first connecting pipes which are distributed circumferentially are connected between the side surfaces, close to each other, of every two adjacent first annular pipes in a penetrating manner; the moving path of the tube pass fluid in the shell is further increased, the contact area of the tube pass fluid and the shell pass fluid in the shell is further increased, the contact area of the shell pass fluid and the first annular pipe is increased through the arranged hollow disc and the arranged side opening, and through the arranged sleeve, the arranged side pipe and the arranged embedded pipe, the heat exchange efficiency is improved. The shell pass fluid can make full contact with the first connecting pipe, so that the contact area of the tube pass fluid and the shell pass fluid can be greatly increased, and the heat exchange efficiency of the tube pass fluid and the shell pass fluid is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial air conditioners, and in particular relates to a shell and tube heat exchanger for high-strength air conditioners. Background Art

[0002] Shell and tube heat exchanger is a kind of heat exchange equipment widely used in many industrial fields such as chemical industry, petroleum, electricity, food, etc. Structurally, it is mainly composed of shell, tube bundle, tube sheet, head and baffle. The shell is generally cylindrical, providing external protection and support for the entire heat exchanger. The tube bundle is composed of many tubes, which are the main channels for heat transfer. They are usually made of metal materials (such as carbon steel, stainless steel, etc.), and their shapes, sizes and arrangements vary according to specific heat exchange requirements. The tube sheet is located at both ends of the shell, mainly used to fix the tube bundle and separate the tube side and shell side. The head is used to close both ends of the shell, usually in an elliptical, spherical and other shapes. The baffle is installed in the shell, and its function is to guide the shell side fluid to repeatedly flow horizontally through the tube bundle, increase the flow rate and turbulence of the fluid, and thus improve the heat transfer efficiency. The working principle of the shell and tube heat exchanger is based on heat conduction and convection. Two fluids of different temperatures flow in the tube side and shell side respectively. Heat is transferred from the high-temperature fluid to the low-temperature fluid through the tube wall. For example, in chemical production, high-temperature reaction products flow in the shell side, while the raw materials that need to be heated flow in the tube side, and the heat is transferred from the reaction products to the raw materials to achieve preheating of the raw materials. This type of heat exchanger has many advantages. It has high reliability and adaptability, and can handle fluids of various properties (such as corrosive, viscous, etc.). And it can operate in a relatively wide temperature and pressure range. At the same time, its structure is relatively simple, easy to manufacture, install and maintain. However, shell and tube heat exchangers also have some disadvantages, such as the heat transfer efficiency may be lower than some new heat exchangers, and the volume and weight are larger.

[0003] The existing high-intensity air-conditioning shell and tube heat exchanger uses a linear tube bundle, which results in a small contact area between the tube-side fluid and the shell-side fluid, resulting in poor heat exchange efficiency between the tube-side fluid and the shell-side fluid.

[0004] Therefore, a high-strength shell and tube heat exchanger for air conditioning is needed to solve the problem in the prior art that the contact area between the tube-side fluid and the shell-side fluid is small, resulting in poor heat exchange efficiency between the tube-side fluid and the shell-side fluid. Summary of the invention

[0005] The object of the present invention is to provide a high-strength shell and tube heat exchanger for air conditioning to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shell and tube heat exchanger for high-intensity air conditioning, comprising a bare shell, a plurality of evenly distributed first annular tubes are arranged inside the shell, a plurality of first connecting tubes distributed in a circumferential manner are connected through a side surface of two adjacent first annular tubes close to each other, a plurality of connecting tubes distributed in a circumferential manner are connected through an outer wall of the first annular tube on one side, a spiral tube is connected to one end of the connecting tube, a plurality of evenly distributed hollow disks matching the corresponding first annular tubes are arranged inside the plurality of first annular tubes, an opening is opened at the center of a side surface of the hollow disk, a side opening is opened on the outer wall of the hollow disk, and the side opening corresponds to the first annular tube.

[0007] Furthermore, a sleeve is fixed between two adjacent hollow disks close to one side thereof, the sleeve corresponds to the opening, the outer wall of the sleeve is connected with a plurality of circumferentially distributed side tubes, and one end of a plurality of the side tubes is connected with a mosaic tube along the axial direction of the sleeve, and the mosaic tube is correspondingly sleeved on the outer periphery of the first connecting tube.

[0008] Furthermore, a plurality of circumferentially distributed retaining bars are fixed between two side surfaces of the inner side wall of the hollow disk that are close to each other.

[0009] Furthermore, one end of the spiral tube is connected with a second connecting tube, the second connecting tube passes through the shell, and a plurality of the second connecting tubes are connected with a second annular tube.

[0010] Furthermore, a first air inlet pipe is connected through one side of the hollow disk, the first air inlet pipe passes through the shell, and a first air outlet pipe is connected through one side of the bottom surface of the outer wall of the shell.

[0011] Furthermore, a plurality of butt joint tubes distributed in a circumference are connected through the outer wall of the first annular tube on the other side, a fixed disk is fixed on one side inside the shell, and a plurality of the butt joint tubes pass through the fixed disk.

[0012] Furthermore, one end of a plurality of the butt-jointing pipes is connected through a conical shell.

[0013] Furthermore, one end of the conical shell is connected with a second air intake pipe, and the second air intake pipe passes through the outer shell.

[0014] Furthermore, a second air outlet pipe is connected through the outer side wall of the second annular tube.

[0015] Furthermore, the first air intake pipe and the second air intake pipe are both L-shaped structures.

[0016] Compared with the prior art, the shell and tube heat exchanger for high-strength air conditioning provided by the present invention has at least the following beneficial effects: By providing the first annular tube and the first connecting tube, the movement path of the tube-side fluid in the shell is increased, thereby increasing the contact area between the tube-side fluid and the shell-side fluid in the shell; by providing the spiral tube, the movement path of the tube-side fluid in the shell is further increased, thereby further increasing the contact area between the tube-side fluid and the shell-side fluid in the shell; by providing the hollow disk and the side port, the contact area between the shell-side fluid and the first annular tube is increased; by providing the sleeve, the side tube and the mosaic tube, the shell-side fluid can fully contact the first connecting tube, thereby greatly increasing the contact area between the tube-side fluid and the shell-side fluid, thereby improving the heat exchange efficiency between the tube-side fluid and the shell-side fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the second annular tube structure of the present invention; Figure 3 For the present invention Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part; Figure 4 This is a schematic diagram of the first annular tube structure of the present invention; Figure 5 It is a schematic diagram of the structure of the mosaic tube of the present invention; Figure 6 It is a schematic diagram of the side port structure of the present invention; Figure 7 This is a schematic diagram of the baffle structure of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the conical shell of the present invention.

[0018] In the figure: 100, housing; 101, first annular tube; 102, first connecting tube; 200, connecting pipe; 201, spiral pipe; 202, second connecting pipe; 203, second annular pipe; 300, sleeve; 301, side pipe; 302, embedded pipe; 303, first air inlet pipe; 400, hollow plate; 401, opening; 402, stop bar; 403, side opening; 500, fixed plate; 501, butt-jointed pipe; 502, conical shell; 503, second air inlet pipe; 504, first air outlet pipe; 505, second air outlet pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0021] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0022] A specific embodiment of the present invention, as Figure 1-Figure 8 As shown, a shell and tube heat exchanger for high-intensity air conditioning is disclosed, including a bare shell 100, wherein a plurality of evenly distributed first annular tubes 101 are arranged inside the shell 100, a plurality of circumferentially distributed first connecting tubes 102 are connected through a side surface between two adjacent first annular tubes 101 close to each other, a plurality of circumferentially distributed connecting tubes 200 are connected through an outer wall of the first annular tube 101 on one side, a spiral tube 201 is connected to one end of the connecting tube 200, a plurality of evenly distributed hollow disks 400 matched with the corresponding first annular tubes 101 are arranged inside the plurality of first annular tubes 101, an opening 401 is opened at the center of a side surface of the hollow disk 400, a side opening 403 is opened on the outer wall of the hollow disk 400, and the side opening 403 corresponds to the first annular tube 101.

[0023] As a further solution of the present invention, a sleeve 300 is fixed between two adjacent hollow disks 400 close to each other on one side, the sleeve 300 corresponds to the opening 401, and the outer wall of the sleeve 300 is connected with a plurality of circumferentially distributed side tubes 301, and a mosaic tube 302 is connected to one end of a plurality of side tubes 301 along the axial direction of the sleeve 300, and the mosaic tube 302 is correspondingly sleeved on the outer periphery of the first connecting tube 102.

[0024] By setting the sleeve 300, a connection can be formed between several hollow disks 400, so that when the shell-side fluid enters the first air inlet pipe 303, the shell-side fluid can enter the hollow disk 400 through the sleeve 300, and finally be discharged from the side port 403 to contact the outer wall of the first annular tube 101, so that the shell-side fluid can exchange heat with the tube-side fluid in the first annular tube 101. By setting the interlocking tube 302, the shell-side fluid entering from the first air inlet pipe 303 can enter the interlocking tube 302 through the side tube 301, and then contact the outer wall of the first connecting tube 102, so as to exchange heat with the tube-side fluid in the first connecting tube 102.

[0025] The diameter of the embedded tube 302 is greater than the diameter of the first connecting tube 102 , and the length of the embedded tube 302 is less than the length of the first connecting tube 102 .

[0026] As a further solution of the present invention, a plurality of circumferentially distributed retaining bars 402 are fixed between two side surfaces of the inner wall of the hollow disk 400 that are close to each other.

[0027] The baffle bars 402 are provided so that the shell-side fluid entering the hollow disk 400 can be dispersed.

[0028] As a further solution of the present invention, one end of the spiral tube 201 is connected with a second connecting tube 202 , the second connecting tube 202 passes through the housing 100 , and a second annular tube 203 is connected between a plurality of the second connecting tubes 202 .

[0029] By providing the second annular pipe 203 , the shell-side fluid discharged from the spiral tubes 201 can be collected centrally.

[0030] As a further solution of the present invention, a first air inlet pipe 303 is connected to one side of the hollow disk 400 , and the first air inlet pipe 303 passes through the outer shell 100 . A first air outlet pipe 504 is connected to one side of the bottom surface of the outer wall of the outer shell 100 .

[0031] The shell-side fluid can enter the housing 100 through the first air inlet pipe 303 , and the shell-side fluid that has undergone heat exchange can be discharged from the first air outlet pipe 504 to a corresponding position through the first air outlet pipe 504 .

[0032] The scheme has the following working process: when the tube-side fluid and the shell-side fluid are heat exchanged, the first air inlet pipe 303 and the second air inlet pipe 503 are first connected to the pipelines of the shell-side fluid and the tube-side fluid respectively, and then the tube-side fluid enters the second air inlet pipe 503, and then enters the conical shell 502, and finally enters the plurality of butt-joint pipes 501, and then the tube-side fluid flows in the first annular pipe 101 and the first connecting pipe 102, and enters the threaded pipe through the connecting pipe 200, and finally enters the second annular pipe 203 and is discharged from the second air outlet pipe 505, while the shell-side fluid enters the first air inlet pipe 303. 03, the shell-side fluid moves between several sleeves 300, a part of the shell-side fluid enters the hollow disk 400 and is discharged from the side port 403, so that this part of the shell-side fluid contacts the first annular tube 101, and another part of the shell-side fluid enters the sleeve 300 and then enters the side tube 301 and enters the embedded tube 302, so that this part of the shell-side fluid contacts the first connecting tube 102, and the shell-side fluid discharged from the side port 403 and the embedded tube 302 moves in the outer shell 100, contacts the first annular tube 101 and the spiral tube 201, and is finally discharged from the second outlet pipe 505 to the corresponding position.

[0033] According to the above working process, it can be known that: by setting the first annular tube 101 and the first connecting tube 102, the movement path of the tube-side fluid in the shell 100 is increased, thereby increasing the contact area between the tube-side fluid and the shell-side fluid in the shell 100; by setting the spiral tube 201, the movement path of the tube-side fluid in the shell 100 is further increased, further increasing the contact area between the tube-side fluid and the shell-side fluid in the shell 100; by setting the hollow disk 400 and the side port 403, the contact area between the shell-side fluid and the first annular tube 101 is increased; by setting the sleeve 300, the side tube 301 and the mosaic tube 302, the shell-side fluid can fully contact with the first connecting tube 102, thereby greatly increasing the contact area between the tube-side fluid and the shell-side fluid, thereby improving the heat exchange efficiency between the tube-side fluid and the shell-side fluid.

[0034] As a further solution of the present invention, a plurality of circumferentially distributed butt joint pipes 501 are connected through the outer wall of the first annular tube 101 on the other side, a fixing plate 500 is fixed to one side inside the housing 100, and a plurality of the butt joint pipes 501 pass through the fixing plate 500.

[0035] By providing the butt-joint pipe 501 , the pipe-side fluid can enter into the first annular pipes 101 and the first connecting pipe 102 through the butt-joint pipe 501 .

[0036] As a further solution of the present invention, one end of a plurality of the butt-joint pipes 501 is connected through a conical shell 502 .

[0037] By providing the conical shell 502 , the pipe-side fluid entering from the second air inlet pipe 503 can enter the conical shell 502 and then enter the plurality of butt-joint pipes 501 .

[0038] As a further solution of the present invention, a second air inlet pipe 503 is connected through one end of the conical shell 502 , and the second air inlet pipe 503 passes through the outer shell 100 .

[0039] The second air inlet pipe 503 is provided so that the tube-side fluid can enter the conical shell 502 through the second air inlet pipe 503 .

[0040] As a further solution of the present invention, the outer wall of the second annular tube 203 is connected with a second air outlet pipe 505 .

[0041] The second gas outlet pipe 505 is provided so that the shell-side fluid entering the second annular pipe 203 can be discharged from the second gas outlet pipe 505 .

[0042] As a further solution of the present invention, the first air intake pipe 303 and the second air intake pipe 503 are both L-shaped structures.

[0043] By setting the first air inlet pipe 303 and the second air inlet pipe 503 as an L-shaped structure, the first air inlet pipe 303 and the second air inlet pipe 503 can be easily connected to the corresponding pipelines.

[0044] In summary, when the tube-side fluid and the shell-side fluid are heat exchanged, the first air inlet pipe 303 and the second air inlet pipe 503 are first connected to the pipelines of the shell-side fluid and the tube-side fluid respectively, and then the tube-side fluid enters the second air inlet pipe 503, and then enters the conical shell 502, and finally enters the plurality of butt joint pipes 501, and then the tube-side fluid flows in the first annular pipe 101 and the first connecting pipe 102, and enters the threaded pipe through the connecting pipe 200, and finally enters the second annular pipe 203 and is discharged from the second air outlet pipe 505, while the shell-side fluid enters the first air inlet pipe 303, and the shell-side fluid enters the first air inlet pipe 303, and the shell-side fluid enters the first air inlet pipe 503. The shell-side fluid moves between several sleeves 300, a part of the shell-side fluid enters the hollow disk 400 and is discharged from the side port 403, so that this part of the shell-side fluid contacts the first annular tube 101, and another part of the shell-side fluid enters the sleeve 300 and then enters the side tube 301 and enters the embedded tube 302, so that this part of the shell-side fluid contacts the first connecting tube 102. The shell-side fluid discharged from the side port 403 and the embedded tube 302 moves in the outer shell 100, contacts the first annular tube 101 and the spiral tube 201, and is finally discharged from the second outlet pipe 505 to the corresponding position.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shell and tube heat exchanger for high-intensity air conditioning, comprising a bare housing (100), characterized in that: A plurality of evenly distributed first annular tubes (101) are arranged inside the shell (100); a plurality of circumferentially distributed first connecting tubes (102) are connected through a side surface of two adjacent first annular tubes (101) close to each other; a plurality of circumferentially distributed connecting tubes (200) are connected through an outer wall of one side of the first annular tube (101); one end of the connecting tube (200) is connected to a spiral tube (201); a plurality of evenly distributed hollow disks (400) are arranged inside the plurality of first annular tubes (101) and are matched with the corresponding first annular tubes (101); an opening (401) is provided at the center of a side surface of the hollow disk (400); a side opening (403) is provided on an outer wall of the hollow disk (400); the side opening (403) corresponds to the first annular tube (101).

2. A shell and tube heat exchanger for high-strength air conditioning according to claim 1, characterized in that: A sleeve (300) is fixed between two adjacent hollow disks (400) on one side thereof, the sleeve (300) corresponding to the opening (401), a plurality of circumferentially distributed side tubes (301) are connected through the outer wall of the sleeve (300), and a plurality of side tubes (301) are connected through one end thereof along the axial direction of the sleeve (300), and the embedded tube (302) is correspondingly sleeved on the outer periphery of the first connecting tube (102).

3. A shell and tube heat exchanger for high-strength air conditioning according to claim 2, characterized in that: A plurality of retaining bars (402) distributed in a circumference are fixed between two side surfaces of the inner side wall of the hollow disk (400) that are close to each other.

4. A shell and tube heat exchanger for high strength air conditioning according to claim 3, characterized in that: One end of the spiral tube (201) is connected to a second connecting tube (202), the second connecting tube (202) passes through the housing (100), and a second annular tube (203) is connected between a plurality of the second connecting tubes (202).

5. A shell and tube heat exchanger for high strength air conditioning according to claim 4, characterized in that: A first air inlet pipe (303) is connected through one side of the hollow disk (400), the first air inlet pipe (303) passes through the outer shell (100), and a first air outlet pipe (504) is connected through one side of the bottom surface of the outer wall of the outer shell (100).

6. A shell and tube heat exchanger for high strength air conditioning according to claim 5, characterized in that: A plurality of circumferentially distributed butt joint pipes (501) are connected through the outer wall of the first annular tube (101) on the other side, and a fixing plate (500) is fixed to one side of the interior of the housing (100), and the plurality of butt joint pipes (501) pass through the fixing plate (500).

7. A shell and tube heat exchanger for high strength air conditioning according to claim 6, characterized in that: One end of a plurality of the butt-joint pipes (501) is connected through a conical shell (502).

8. A shell and tube heat exchanger for high strength air conditioning according to claim 7, characterized in that: One end of the conical shell (502) is connected to a second air intake pipe (503), and the second air intake pipe (503) passes through the outer shell (100).

9. A shell and tube heat exchanger for high strength air conditioning according to claim 8, characterized in that: A second air outlet pipe (505) is connected through the outer wall of the second annular tube (203).

10. A shell and tube heat exchanger for high strength air conditioning according to claim 9, characterized in that: The first air intake pipe (303) and the second air intake pipe (503) are both L-shaped structures.

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