Coaxial sleeve heat exchanger

Abstract

The utility model discloses a coaxial casing heat exchanger relates to coaxial heat exchanger technical field, including support subassembly, internal spiral tube subassembly and external spiral tube subassembly, the support subassembly includes shell and base, the base is fixed connection in the bottom of shell, internal spiral tube subassembly includes internal spiral infusion tube and connecting tube, and the external spiral tube subassembly includes internal spiral infusion tube and connecting tube. The connecting pipes are arranged at the two ends of the inner spiral liquid conveying pipe, the outer spiral pipe assembly comprises an outer spiral liquid conveying pipe and an outer pipe liquid outlet, and the outer pipe liquid outlet is formed in the end, away from the base, of the outer spiral liquid conveying pipe. Under the combined action of the inner spiral liquid conveying pipe, the outer spiral liquid conveying pipe and the heat exchange fins, the inner spiral liquid conveying pipe and the outer spiral liquid conveying pipe are arranged to be spiral, so that the heat exchanger can be higher in efficiency under the same size, and the heat exchange fins are arranged between the inner spiral liquid conveying pipe and the outer spiral liquid conveying pipe, so that the heat exchange efficiency is improved. The contact area between fluid in the inner pipe and fluid in the outer pipe is increased, and heat exchange efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coaxial heat exchanger technical field, concretely relates to a coaxial double pipe heat exchanger. BACKGROUND

[0002] Coaxial heat exchanger, shortly called coaxial heat exchanger, is a commonly used heat exchanger, is the device of partial heat of hot fluid to cold fluid, also called heat exchanger, it includes with inner tube and the outer tube of setting in inner tube, coaxial double pipe heat exchanger is the concentric double pipe of two tubes of different diameter with sleeve as element, adopt different connection mode and make two kinds of fluid flow with pure flow or pure counter flow, because of the existence of temperature difference, therefore can complete the heat exchange function, simple structure, applicable to high temperature and high pressure fluid, small capacity fluid heat transfer.

[0003] But when using coaxial heat exchanger, because the contact area between inner tube and outer tube fluid is small, heat exchange efficiency is low, and when using, because its outside has no protection, lead to heat exchanger when colliding with other objects, easy to deform, lead to internal passage blockage, inconvenient to promote use.

[0004] The application provides a coaxial double pipe heat exchanger to solve the problem. UTILITY MODEL CONTENTS

[0005] The utility model discloses a coaxial double pipe heat exchanger to solve the problem of the contact area between the inner tube and the outer tube fluid of the coaxial heat exchanger in the background art, and the outer tube has no protection, which makes the heat exchange efficiency of the coaxial heat exchanger low and the coaxial heat exchanger prone to deformation, causing the internal passage to be blocked and the use effect to be poor.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A coaxial double pipe heat exchanger, comprising a support assembly, an inner spiral pipe assembly and an outer spiral pipe assembly, the support assembly comprises a shell and a base, the inner spiral pipe assembly is fixedly installed inside the support assembly, the outer spiral pipe assembly is fixedly installed at the bottom end of the inner spiral pipe assembly, the base is fixedly connected to the bottom of the shell, the inner spiral pipe assembly comprises an inner spiral infusion tube and a connecting pipe, the connecting pipe is arranged at both ends of the inner spiral infusion tube, the outer spiral pipe assembly comprises an outer spiral infusion tube and an outer tube liquid outlet, and the outer tube liquid outlet is arranged at one end of the outer spiral infusion tube away from the base.

[0008] The further improvement of the technical scheme of the utility model is that the base is fixedly connected with a supporting leg at the bottom, and an inner supporting column is fixedly connected to the top of the base.

[0009] The further improvement in the technical scheme of the utility model lies in that: the outer part of the inner spiral infusion tube is fixedly installed with heat exchange fins, the inner parts of both ends of the outer spiral infusion tube are provided with sealing stoppers, and the outer part of the sealing stopper is provided with a sealing ring.

[0010] The further improvement in the technical scheme of the utility model lies in that: the inner part of the connecting pipe far from the base is provided with an inner pipe liquid inlet, and the inner part of the connecting pipe close to the base is provided with an inner pipe liquid outlet.

[0011] The further improvement in the technical scheme of the utility model lies in that: the outer part of the inner spiral infusion tube is fixedly installed with heat exchange fins, the inner parts of both ends of the outer spiral infusion tube are provided with sealing stoppers, and the outer part of the sealing stopper is provided with a sealing ring.

[0012] The further improvement in the technical scheme of the utility model lies in that: the outer spiral infusion tube is threadedly connected with a sealing plug at both ends, the inner part of the sealing plug is connected with the connecting pipe, and the top of the sealing plug is provided with a dismounting hole.

[0013] The further improvement in the technical scheme of the utility model lies in that: the outer spiral infusion tube is threadedly connected with a sealing plug at both ends, the inner part of the sealing plug is connected with the connecting pipe, and the top of the sealing plug is provided with a dismounting hole.

[0014] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0015] 1. The utility model provides a coaxial sleeve heat exchanger, through the common action of the inner spiral infusion tube, the outer spiral infusion tube and the heat exchange fins, the inner spiral infusion tube and the outer spiral infusion tube are arranged in a spiral shape, the heat exchanger can be more efficient under the same volume, the heat exchange fins are arranged between the inner spiral infusion tube and the outer spiral infusion tube, the contact area between the inner tube and the outer tube fluid is increased, and the heat exchange efficiency is improved.

[0016] 2. The utility model provides a coaxial sleeve heat exchanger, through the common action of the shell, the inner support column and the spiral pipe support column, the heat exchanger body is placed in the inside of the shell, is protected, the inner support column and the spiral pipe support column can prevent the heat exchanger from deforming when colliding with other objects. DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the coaxial sleeve heat exchanger of the utility model;

[0018] Figure 2 It is the inside structure schematic view of the coaxial sleeve heat exchanger of the utility model;

[0019] Figure 3 It is the inside structure schematic view of the outer spiral pipe assembly of the utility model;

[0020] Figure 4 It is the internal structure schematic view of the connecting pipe of the utility model.

[0021] In the figure: 1, support assembly; 2, inner spiral pipe assembly; 3, outer spiral pipe assembly; 10, shell; 11, support leg; 12, inner support column; 13, spiral pipe support column; 14, base; 20, inner pipe liquid inlet; 21, connecting pipe; 22, inner pipe liquid outlet; 24, inner spiral infusion tube; 25, heat exchange fin; 26, sealing plug; 27, detachable hole; 28, sealing ring; 29, sealing block; 30, outer pipe liquid outlet; 31, outer spiral infusion tube; 32, outer pipe liquid inlet; 33, filter. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail in connection with examples:

[0023] As Figures 1-4 shown, the utility model provides a coaxial sleeve pipe heat exchanger, including support assembly 1, inner spiral pipe assembly 2 and outer spiral pipe assembly 3, inner spiral pipe assembly 2 is fixedly installed in the inside of support assembly 1, and outer spiral pipe assembly 3 is fixedly installed at the bottom end of inner spiral pipe assembly 2, support assembly 1 includes shell 10 and base 14, shell 10 can provide certain protection effect to the heat exchanger main part, and base 14 is fixedly connected at the bottom of shell 10, the bottom of base 14 is fixedly connected with support leg 11, support leg 11 can play the support of the coaxial sleeve pipe heat exchanger, to prevent from toppling over when the heat exchanger works, causes safety accident, the top of base 14 is fixedly connected with inner support column 12, by setting into spiral shape with inner spiral pipe assembly 2 and outer spiral pipe assembly 3, the heat exchanger can be more efficient under the same volume, and the heating or cooling of liquid is also more uniform and sufficient, the outer fixed mounting of inner support column 12 has spiral pipe support column 13, places the heat exchanger main body in the inside of shell 10, makes it be protected, and inner support column 12 and spiral pipe support column 13 can prevent the heat exchanger from deforming when the heat exchanger collides with other objects.

[0024] The inner spiral pipe assembly 2 comprises an inner spiral liquid conveying pipe 24 and a connecting pipe 21 arranged at both ends of the inner spiral liquid conveying pipe 24, through which the inner spiral liquid conveying pipe 24 can be connected with the inner pipe liquid inlet 20 and the inner pipe liquid outlet 22, and can be isolated from the outer spiral liquid conveying pipe 31, and the two kinds of liquids are separated by the sealing plug 26 and the sealing ring 28 to prevent the mixing of the two kinds of liquids. The connecting pipe 21 at one end away from the base 14 is provided with the inner pipe liquid inlet 20, through which the high-temperature liquid can be sent into the inside of the heat exchanger body. The connecting pipe 21 at one end close to the base 14 is provided with the inner pipe liquid outlet 22. The outer portion of the inner spiral liquid conveying pipe 24 is fixedly provided with heat exchange fins 25. The heat exchange fins 25 arranged between the inner spiral liquid conveying pipe 24 and the outer spiral liquid conveying pipe 31 increase the contact area between the inner spiral pipe assembly 2 and the outer spiral pipe assembly 3, and improve the heat exchange efficiency. The liquids after heat exchange flow out from the outer pipe liquid outlet 30 and the inner pipe liquid outlet 22. The inner portions of both ends of the outer spiral liquid conveying pipe 31 are provided with sealing blocks 29. The outer portions of the sealing blocks 29 are provided with sealing rings 28. The both ends of the outer spiral liquid conveying pipe 31 are threadedly connected with the sealing plugs 26. The inner portions of the sealing plugs 26 are provided with the connecting pipes 21. The top portions of the sealing plugs 26 are provided with dismounting holes 27. The sealing plugs 26 and the sealing rings 28 on the sealing blocks 29 can prevent the liquids in the heat exchanger from flowing out. The dismounting holes 27 on the sealing plugs 26 can facilitate the installation and dismounting of the sealing plugs 26 by the staff.

[0025] The outer spiral pipe assembly 3 comprises an outer spiral liquid conveying pipe 31 and an outer pipe liquid outlet 30 arranged at one end of the outer spiral liquid conveying pipe 31 away from the base 14. The other end of the spiral pipe support column 13 is connected with the inner side of the outer spiral liquid conveying pipe 31. The end of the outer spiral liquid conveying pipe 31 close to the support leg 11 is fixedly connected with a filter 33. The filter 33 can filter the impurities in the liquid to prevent the impurities from depositing on the outer spiral liquid conveying pipe 31 and the heat exchange fins 25, and reduce the heat exchange efficiency. One end of the filter 33 is fixedly provided with an outer pipe liquid inlet 32. Through the outer pipe liquid inlet 32, the low-temperature liquid can be sent into the inside of the heat exchanger body.

[0026] The working principle of the coaxial sleeve heat exchanger will be described below.

[0027] As Figures 1-4As shown, in use of the coaxial sleeve heat exchanger, first, high-temperature liquid is sent into the inside of the heat exchanger body through the inner tube liquid inlet 20, and then low-temperature liquid is sent into the inside of the heat exchanger body through the outer tube liquid inlet 32, the filter 33 can filter the liquid inside to filter out some impurities, so as to prevent the impurities from depositing on the outer spiral liquid conveying pipe 31 and the heat exchange fins 25, and reduce the heat exchange efficiency, the sealing plugs 26 at both ends of the outer spiral liquid conveying pipe 31 and the sealing ring 28 on the sealing block 29 can prevent the liquid in the heat exchanger from flowing out, the two kinds of liquids are separated by the sealing plugs 26 and the sealing ring 28, so as to prevent the two kinds of liquids from mixing, the inner spiral liquid conveying pipe 24 and the outer spiral liquid conveying pipe 31 are isolated by the sealing plugs 26 and the connecting pipe 21, the connecting pipe 21 can connect the inner spiral liquid conveying pipe 24 with the inner tube liquid inlet 20 and the inner tube liquid outlet 22, the mounting and dismounting holes 27 on the sealing plugs 26 can facilitate the installation and dismounting of the sealing plugs 26 by the staff, the inner spiral pipe assembly 2 and the outer spiral pipe assembly 3 are arranged in a spiral shape, so that the heat exchanger can have higher efficiency under the same volume, and the liquid can be heated or cooled more uniformly and sufficiently, the heat exchange fins 25 are arranged between the inner spiral liquid conveying pipe 24 and the outer spiral liquid conveying pipe 31, so that the contact area between the fluid in the inner spiral pipe assembly 2 and the outer spiral pipe assembly 3 is increased, and the heat exchange efficiency is improved, the liquids after heat exchange flow out from the outer tube liquid outlet 30 and the inner tube liquid outlet 22 respectively, the heat exchanger body is placed in the inside of the shell 10, so as to be protected, and the inner support column 12 and the spiral pipe support column 13 can prevent the heat exchanger from deforming when the heat exchanger collides with other objects.

[0028] The foregoing has described the present application in detail, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit and principles of the present application are within the scope of the present application.

Claims

1. A coaxial tube heat exchanger, comprising a support assembly (1), an inner spiral tube assembly (2), and an outer spiral tube assembly (3), characterized in that: The inner spiral tube assembly (2) is fixedly installed inside the support assembly (1), and the outer spiral tube assembly (3) is fixedly installed at the bottom end of the inner spiral tube assembly (2). The support assembly (1) includes a shell (10) and a base (14). The base (14) is fixedly connected to the bottom of the shell (10). The inner spiral tube assembly (2) includes an inner spiral infusion tube (24) and a connecting tube (21). The connecting tube (21) is located at both ends of the inner spiral infusion tube (24). The outer spiral tube assembly (3) includes an outer spiral infusion tube (31) and an outer tube outlet (30). The outer tube outlet (30) is located at the end of the outer spiral infusion tube (31) away from the base (14).

2. The coaxial tube heat exchanger according to claim 1, characterized in that: The bottom of the base (14) is fixedly connected to a support leg (11), and the top of the base (14) is fixedly connected to an inner support column (12).

3. A coaxial tube heat exchanger according to claim 2, characterized in that: A spiral tube support column (13) is fixedly installed on the outside of the inner support column (12), and the other end of the spiral tube support column (13) is connected to the inner side of the outer spiral infusion tube (31).

4. A coaxial tube heat exchanger according to claim 1, characterized in that: The connecting pipe (21) away from the base (14) is provided with an inner tube inlet (20) at one end and an inner tube outlet (22) at the other end of the connecting pipe (21) close to the base (14).

5. A coaxial tube heat exchanger according to claim 1, characterized in that: The inner spiral infusion tube (24) is fixedly installed with heat exchange fins (25), and both ends of the outer spiral infusion tube (31) are provided with sealing blocks (29), and the sealing blocks (29) are provided with sealing rings (28) on the outside.

6. A coaxial tube heat exchanger according to claim 1, characterized in that: The two ends of the external spiral infusion tube (31) are threaded with sealing plugs (26), the inside of the sealing plugs (26) is connected to the connecting tube (21), and the top of the sealing plugs (26) is provided with loading and unloading holes (27).

7. A coaxial tube heat exchanger according to claim 1, characterized in that: The outer spiral infusion tube (31) is fixedly connected to a filter (33) at one end near the support leg (11), and an outer tube inlet (32) is fixedly installed at one end of the filter (33).

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