A shell-and-tube heat exchanger for high-strength air conditioners

Abstract

The present invention discloses a shell-and-tube heat exchanger for high-strength air conditioners, belonging to the technical field of industrial air conditioners. Aiming at the problem that when the tube-side fluid and the shell-side fluid come into contact, the contact area between the two is small, resulting in poor heat exchange efficiency between the tube-side fluid and the shell-side fluid, it includes a light outer shell. Inside the outer shell, a number of uniformly distributed first annular tubes are arranged, and a number of circumferentially distributed first connecting tubes are connected through between the mutually adjacent sides of two adjacent first annular tubes; the present invention further increases the movement path of the tube-side fluid inside the outer shell, further increasing the contact area between the tube-side fluid and the shell-side fluid inside the outer shell. Through the provided hollow disc and side ports, the contact area between the shell-side fluid and the first annular tube is increased. Through the provided sleeve tube, side tube and fitting 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, and further improving the heat exchange efficiency between the tube-side fluid and the shell-side fluid.

Description

Technical Field

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

[0002] A shell-and-tube heat exchanger is a heat exchange device widely used in many industrial fields such as chemical industry, petroleum, electric power, and food. Structurally, it mainly consists of components such as a shell, a tube bundle, tube sheets, tube heads, and baffles. 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. Usually made of metal materials (such as carbon steel, stainless steel, etc.), their shapes, sizes, and arrangements will vary according to specific heat transfer requirements. The tube sheets are located at both ends of the shell, mainly used to fix the tube bundle and separate the tube side and the shell side. The tube heads are used to seal both ends of the shell, usually having shapes such as oval and spherical. The baffles are installed inside the shell, and their function is to guide the shell-side fluid to flow transversely through the tube bundle repeatedly, increasing the fluid velocity and the degree of turbulence, thereby improving the heat transfer efficiency. The working principle of the shell-and-tube heat exchanger is based on heat conduction and convection. Two fluids at different temperatures flow in the tube side and the 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, the high-temperature reaction products flow in the shell side, while the raw materials to be heated flow in the tube side, and 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 various fluids with different properties (such as corrosiveness, viscosity, etc.). Moreover, it can operate within a relatively wide temperature and pressure range. At the same time, its structure is relatively simple, and it is easy to manufacture, install, and maintain. However, the shell-and-tube heat exchanger also has some disadvantages. For example, its heat transfer efficiency may be relatively low compared to some new types of heat exchangers, and its volume and weight are relatively large.

[0003] The tube bundle adopted by the existing shell-and-tube heat exchanger for high-strength air conditioners is of a straight-line structure when in use. When the tube-side fluid and the shell-side fluid come into contact, the contact area between the two is small, resulting in poor heat exchange efficiency between the tube-side fluid and the shell-side fluid.

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

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

[0006] To achieve the above object, the present invention provides the following technical solutions: A shell-and-tube heat exchanger for a high-strength air conditioner, including a light outer shell. Inside the shell, there are several first annular tubes evenly distributed. Between the adjacent two first annular tubes, several first connecting tubes distributed in a circumferential pattern are connected through on the mutually approaching side surfaces. On the outer side wall of one side of the first annular tubes, several communicating tubes distributed in a circumferential pattern are connected through. One end of the communicating tube is connected to a spiral tube. Inside several first annular tubes, there are several hollow discs evenly distributed and cooperating with the corresponding first annular tubes. At the center of one side surface of the hollow disc, there is an opening. On the outer side wall of the hollow disc, there are side openings corresponding to the first annular tubes.

[0007] Further, a sleeve is fixed between the mutually approaching side surfaces of the adjacent two hollow discs, corresponding to the opening. On the outer side wall of the sleeve, several side tubes distributed in a circumferential pattern are connected through. Along the axial direction of the sleeve, one end of several side tubes is connected through to a fitting tube, and the fitting tube is correspondingly sleeved around the periphery of the first connecting tube.

[0008] Further, several circumferentially distributed blocking bars are fixed between the mutually approaching side surfaces of the inner side wall of the hollow disc.

[0009] Further, one end of the spiral tube is connected through to a second connecting tube, and the second connecting tube passes through the shell. Between several second connecting tubes, a second annular tube is connected through.

[0010] Further, on one side surface of one side of the hollow disc, a first intake pipe is connected through, and the first intake pipe passes through the shell. On one side of the bottom surface of the outer side wall of the shell, a first outlet pipe is connected through.

[0011] Further, on the outer side wall of the other side of the first annular tube, several circumferentially distributed docking pipes are connected through. Inside the shell, on one side, a fixed disc is fixed, and several docking pipes pass through the fixed disc.

[0012] Further, one end of several docking pipes is connected through to a conical shell.

[0013] Further, one end of the conical shell is connected through to a second intake pipe, and the second intake pipe passes through the shell.

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

[0015] Further, both the first intake pipe and the second intake pipe are of an L-shaped structure.

[0016] Compared with the prior art, the shell-and-tube heat exchanger for a high-strength air conditioner provided by the present invention has at least the following beneficial effects:

[0017] By providing the first annular pipe and the first connecting pipe, the moving path of the tube-side fluid in the outer shell is increased, thereby increasing the contact area between the tube-side fluid and the shell-side fluid in the outer shell. By providing the spiral pipe, the moving path of the tube-side fluid in the outer shell is further increased, further increasing the contact area between the tube-side fluid and the shell-side fluid in the outer shell. By providing the hollow disk and the side opening, the contact area between the shell-side fluid and the first annular pipe is increased. By providing the sleeve pipe, the side pipe and the fitting pipe, the shell-side fluid can be in full contact with the first connecting pipe, so that the contact area between the tube-side fluid and the shell-side fluid can be greatly increased, thereby improving the heat exchange efficiency between the tube-side fluid and the shell-side fluid. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Schematic diagram of the structure of the second annular pipe of the present invention;

[0020] Figure 3 For the present invention Figure 2 Partial enlarged schematic diagram of A in the present invention;

[0021] Figure 4 Schematic diagram of the structure of the first annular pipe of the present invention;

[0022] Figure 5 Schematic diagram of the structure of the fitting pipe of the present invention;

[0023] Figure 6 Schematic diagram of the structure of the side opening of the present invention;

[0024] Figure 7 Schematic diagram of the structure of the retaining bar of the present invention;

[0025] Figure 8 Schematic cross-sectional view of the conical shell of the present invention.

[0026] In the figure:

[0027] 100, outer shell; 101, first annular pipe; 102, first connecting pipe;

[0028] 200, connecting pipe; 201, spiral pipe; 202, second connecting pipe; 203, second annular pipe;

[0029] 300, sleeve pipe; 301, side pipe; 302, fitting pipe; 303, first intake pipe;

[0030] 400, hollow disk; 401, opening; 402, retaining bar; 403, side opening;

[0031] 500. Fixed disk; 501. Docking pipe; 502. Conical shell; 503. Second intake pipe; 504. First exhaust pipe; 505. Second exhaust pipe. Detailed implementation manner

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. It should be noted that, without conflict, the implementation manners and features in the present disclosure can be combined, separated, interchanged, and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0033] In the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences may be performed in a different order than described. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to the described order. In addition, the same reference numerals denote the same components.

[0034] The terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. In addition, when the terms "comprise" and / or "include" and their variants are used in this specification, it indicates the presence of the stated features, wholes, steps, operations, components, assemblies, and / or their groups, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, components, assemblies, and / or their groups. It should also be noted that, as used herein, the terms "substantially", "about", and other similar terms are used as approximate terms rather than degree terms, so they are used to explain the inherent deviations of measured values, calculated values, and / or provided values that those of ordinary skill in the art will recognize.

[0035] A specific embodiment of the present invention is as Figures 1-8As shown in the figure, a shell-and-tube heat exchanger for high-strength air conditioners is disclosed, including a light outer shell 100. Inside the outer shell 100, a number of uniformly distributed first annular tubes 101 are provided. Between the adjacent two first annular tubes 101, a number of circumferentially distributed first connecting tubes 102 are connected through the mutually adjacent side surfaces. On the outer side wall of one side of the first annular tubes 101, a number of circumferentially distributed communicating tubes 200 are connected through. One end of the communicating tube 200 is connected with a spiral tube 201. Inside the number of first annular tubes 101, a number of uniformly distributed hollow disks 400 that cooperate with the corresponding first annular tubes 101 are provided. At the center of one side surface of the hollow disk 400, an opening 401 is provided. On the outer side wall of the hollow disk 400, a side opening 403 is provided, and the side opening 403 corresponds to the first annular tube 101.

[0036] As a further scheme of the present invention, a sleeve 300 is fixed between the mutually adjacent side surfaces of the adjacent two hollow disks 400. The sleeve 300 corresponds to the opening 401. On the outer side wall of the sleeve 300, a number of circumferentially distributed side tubes 301 are connected through. Along the axial direction of the sleeve 300, one end of the number of side tubes 301 is connected through with a fitting tube 302. The fitting tube 302 is correspondingly sleeved on the periphery of the first connecting tube 102.

[0037] Through the arranged sleeve 300, connections can be formed between a number of hollow disks 400. Furthermore, when the shell-side fluid enters the first inlet pipe 303, the shell-side fluid can enter the hollow disk 400 through the sleeve 300 and finally be discharged from the side opening 403 to contact the outer side wall of the first annular tube 101, so that the shell-side fluid can exchange heat with the tube-side fluid inside the first annular tube 101. Through the arranged fitting tube 302, the shell-side fluid entering from the first inlet pipe 303 can enter the fitting tube 302 through the side tube 301, and then contact the outer side wall of the first connecting tube 102, and can exchange heat with the tube-side fluid inside the first connecting tube 102.

[0038] Among them, the diameter of the fitting tube 302 is larger than the diameter of the first connecting tube 102, and the length of the fitting tube 302 is smaller than the length of the first connecting tube 102.

[0039] As a further scheme of the present invention, a number of circumferentially distributed blocking strips 402 are fixed between the mutually adjacent side surfaces of the inner side wall of the hollow disk 400.

[0040] Through the arranged blocking strips 402, the shell-side fluid entering the hollow disk 400 can be dispersed.

[0041] As a further solution of the present invention, one end of the spiral tube 201 is connected through a second connecting tube 202, the second connecting tube 202 passes through the outer shell 100, and a second annular tube 203 is connected through between several of the second connecting tubes 202.

[0042] Through the provided second annular tube 203, the tube-side fluids discharged from several spiral tubes 201 can be centrally collected.

[0043] As a further solution of the present invention, one side of the hollow disc 400 is connected through a first intake pipe 303, the first intake pipe 303 passes through the outer shell 100, and one side of the bottom surface of the outer wall of the outer shell 100 is connected through a first exhaust pipe 504.

[0044] Through the provided first intake pipe 303, the shell-side fluid can enter the outer shell 100 through the first intake pipe 303, and through the provided first exhaust pipe 504, the shell-side fluid that has undergone heat exchange can be discharged from the first exhaust pipe 504 to the corresponding position.

[0045] This solution has the following working process: When heat exchange is carried out between the tube-side fluid and the shell-side fluid, first, the first intake pipe 303 and the second intake pipe 503 are respectively connected to the pipelines of the shell-side fluid and the tube-side fluid, then the tube-side fluid enters the second intake pipe 503, and then enters the conical shell 502, and finally enters several docking pipes 501. After that, the tube-side fluid flows in the first annular tube 101 and the first connecting tube 102, and enters the spiral tube 201 through the communication pipe 200, and finally enters the second annular tube 203 and is discharged from the second exhaust pipe 505, while the shell-side fluid enters the first intake pipe 303, the shell-side fluid moves between several sleeves 300, a part of the shell-side fluid enters the hollow disc 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 side tube 301 after entering the sleeve 300 and enters the fitting tube 302, and 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 fitting tube 302 moves in the outer shell 100 and contacts the first annular tube 101 and the spiral tube 201, and finally is discharged from the first exhaust pipe 504 to the corresponding position.

[0046] According to the above working process, it can be known that: through the arranged first annular pipe 101 and first connecting pipe 102, the moving path of the tube-side fluid in the outer shell 100 is increased, thereby increasing the contact area between the tube-side fluid and the shell-side fluid in the outer shell 100. Through the arranged spiral pipe 201, the moving path of the tube-side fluid in the outer shell 100 is further increased, further increasing the contact area between the tube-side fluid and the shell-side fluid in the outer shell 100. Through the arranged hollow disc 400 and side port 403, the contact area between the shell-side fluid and the first annular pipe 101 is increased. Through the arranged sleeve 300, side pipe 301 and fitting pipe 302, the shell-side fluid can be in full contact with the first connecting pipe 102, so that the contact area between the tube-side fluid and the shell-side fluid can be greatly increased, thereby improving the heat exchange efficiency between the tube-side fluid and the shell-side fluid.

[0047] As a further solution of the present invention, a plurality of butt joint pipes 501 distributed in a circumferential manner are connected through the outer side wall of the other side of the first annular pipe 101 in a penetrating manner, and a fixed disc 500 is fixed on one side inside the outer shell 100, and the plurality of butt joint pipes 501 pass through the fixed disc 500.

[0048] Through the arranged butt joint pipes 501, the tube-side fluid can enter a plurality of first annular pipes 101 and the first connecting pipe 102 through the butt joint pipes 501.

[0049] As a further solution of the present invention, one end of each of the plurality of butt joint pipes 501 is connected through a tapered shell 502 in a penetrating manner.

[0050] Through the arranged tapered shell 502, the tube-side fluid entering from the second intake pipe 503 can enter the tapered shell 502, and then enter a plurality of butt joint pipes 501.

[0051] As a further solution of the present invention, one end of the tapered shell 502 is connected through a second intake pipe 503 in a penetrating manner, and the second intake pipe 503 passes through the outer shell 100.

[0052] Through the arranged second intake pipe 503, the tube-side fluid can enter the tapered shell 502 through the second intake pipe 503.

[0053] As a further solution of the present invention, a second outlet pipe 505 is connected through the outer side wall of the second annular pipe 203 in a penetrating manner.

[0054] Through the arranged second outlet pipe 505, the tube-side fluid entering the second annular pipe 203 can be discharged from the second outlet pipe 505.

[0055] As a further solution of the present invention, both the first intake pipe 303 and the second intake pipe 503 are of an L-shaped structure.

[0056] By setting the first intake pipe 303 and the second intake pipe to be of an L-shaped structure, the first intake pipe 303 and the second intake pipe 503 are convenient to be connected to the corresponding pipes.

[0057] In summary: When exchanging heat between the tube-side fluid and the shell-side fluid, first connect the first intake pipe 303 and the second intake pipe 503 to the pipes of the shell-side fluid and the tube-side fluid respectively. Then, the tube-side fluid enters the second intake pipe 503, then enters the conical shell 502, and finally enters a number of butt joints 501. After that, the tube-side fluid flows in the first annular pipe 101 and the first connecting pipe 102, enters the spiral pipe 201 through the communicating pipe 200, and finally enters the second annular pipe 203 and is discharged from the second outlet pipe 505. The shell-side fluid enters the first intake pipe 303, and the shell-side fluid moves between a number of 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 pipe 101. Another part of the shell-side fluid enters the side pipe 301 after entering the sleeve 300 and enters the fitting pipe 302. This part of the shell-side fluid contacts the first connecting pipe 102. The shell-side fluid discharged from the side port 403 and the fitting pipe 302 moves in the outer shell 100 and contacts the first annular pipe 101 and the spiral pipe 201, and finally is discharged to the corresponding position from the first outlet pipe 504.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. 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-strength air conditioners, comprising a smooth outer shell (100), characterized in that, Inside the said housing (100), there are several evenly distributed first annular tubes (101). Between the mutually adjacent and closer sides of two adjacent first annular tubes (101), there are several circumferentially distributed first connecting tubes (102) connected through. On the outer sidewall of one side of the said first annular tubes (101), there are several circumferentially distributed communicating tubes (200) connected through. One end of the communicating tube (200) is connected with a spiral tube (201). Inside the several first annular tubes (101), there are several evenly distributed hollow disks (400) that cooperate with the corresponding first annular tubes (101). At the center of one side surface of the hollow disk (400), there is an opening (401). On the outer sidewall of the hollow disk (400), there is a side opening (403), and the side opening (403) corresponds to the first annular tube (101). Between the mutually adjacent and closer sides of two adjacent hollow disks (400), there is a sleeve (300) fixed. The sleeve (300) corresponds to the opening (401). On the outer sidewall of the sleeve (300), there are several circumferentially distributed side tubes (301) connected through. Along the axial direction of the sleeve (300), one end of several side tubes (301) is connected through with a fitting tube (302), and the fitting tube (302) is correspondingly sleeved around the periphery of the first connecting tube (102). One side surface of one side of the hollow disk (400) is connected through with a first air inlet pipe (303), and the first air inlet pipe (303) passes through the housing (100). On one side of the bottom surface of the outer sidewall of the housing (100), there is a first air outlet pipe (504) connected through. On the outer sidewall of the other side of the said first annular tubes (101), there are several circumferentially distributed butt joint tubes (501) connected through. Inside the housing (100) on one side, there is a fixed disk (500). Several butt joint tubes (501) pass through the fixed disk (500). One end of several butt joint tubes (501) is connected through with a conical shell (502). One end of the conical shell (502) is connected through with a second air inlet pipe (503), and the second air inlet pipe (503) passes through the housing (100). One end of the spiral tube (201) is connected through with a second connecting tube (202), and the second connecting tube (202) passes through the housing (100). Between several second connecting tubes (202), there is a second annular tube (203) connected through. On the outer sidewall of the second annular tube (203), there is a second air outlet pipe (505) connected through. Both the first air inlet pipe (303) and the second air inlet pipe (503) are of L-shaped structures.

2. The shell-and-tube heat exchanger for high-strength air conditioners according to claim 1, wherein: Between the mutually adjacent and closer sides of the inner sidewall of the said hollow disk (400), there are several circumferentially distributed retaining bars (402) fixed.

Images