Radiant tube heat exchanger with heat insulation structure

Abstract

The utility model relates to the related technical field of radiant tube heat exchangers, in particular to a radiant tube heat exchanger with a heat insulation structure, which comprises a radiation shell, and a heat insulation mechanism is arranged on the surface of the radiation shell. According to the radiant tube heat exchanger with the heat insulation structure, through the arrangement of the heat insulation mechanism, when heat exchange is conducted in the radiation shell and heat loss is prevented, the heat insulation coating forms a first heat insulation defense line on the surface of the radiation shell firstly, part of heat can be effectively prevented from being conducted out through the radiation shell, and then the ceramic fiber blanket has good heat insulation performance; the radiation heat can be further prevented from being transmitted outwards, then the reflection layer can reflect the radiation heat back, heat loss is reduced, then the first fixing frame and the second fixing frame play a role in fixing and supporting the heat insulation structure, the stability of the whole heat insulation structure is ensured, and therefore loss of internal heat is reduced to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field related to radiant tube heat exchangers, and in particular to a radiant tube heat exchanger with a heat insulation structure. Background Art

[0002] A radiant tube heat exchanger is a device that uses the principle of radiation heat transfer to exchange heat. It can achieve better heat transfer, improve heat exchange efficiency, and make the heated object heated more evenly. It can also work stably in harsh environments such as high temperature. Different structural forms can also be designed according to specific needs. When using gas radiant tubes for heating and heat exchange, they need to be insulated. Therefore, a radiant tube heat exchanger with an insulating structure is particularly needed.

[0003] However, the existing radiant tube heat exchanger has poor thermal insulation effect, which easily causes internal heat loss and thus energy waste. Utility Model Content

[0004] The utility model aims to provide a radiant tube heat exchanger with a heat insulation structure to solve the problem that the existing radiant tube heat exchanger proposed in the above background technology has poor heat insulation effect and easily causes internal heat loss, thereby causing energy waste.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radiant tube heat exchanger with a heat insulation structure, comprising a radiant shell, a heat insulation mechanism is arranged on the surface of the radiant shell, a heat exchange mechanism is arranged inside the radiant shell, a second air inlet pipe is sealedly connected to one side of the surface of the radiant shell, a second air outlet pipe is sealedly connected to one side of the surface of the radiant shell, and a second fuel pipe is connected to one side of the surface of the second air inlet pipe;

[0006] The thermal insulation mechanism includes a thermal insulation coating, a ceramic fiber blanket, a reflective layer, a first fixing frame and a second fixing frame. The surface of the radiation shell is coated with a thermal insulation coating, the surface of the radiation shell is connected to a ceramic fiber blanket, the surface of the ceramic fiber blanket is connected to a reflective layer, the surface of the reflective layer is connected to a first fixing frame, and the surface of the reflective layer is connected to a second fixing frame.

[0007] Preferably, the thermal insulation coating is a nano thermal insulation layer, and the ceramic fiber blanket is in contact with the surface of the radiation shell.

[0008] Preferably, the reflective layer is aluminum foil, and the reflective layer is in contact with the surface of the ceramic fiber blanket.

[0009] Preferably, the heat exchange mechanism includes an external heating tube, an internal radiation tube, a first air inlet pipe, a first air outlet pipe, a first igniter, a feed pipe, an outlet pipe, a first fuel pipe and a second igniter. The external heating tube is embedded in the interior of the radiation shell, and the inner radiation tube is embedded in the interior of the radiation shell. The first air inlet pipe passes through one side of the surface of the radiation shell, and the first air outlet pipe is connected to one side of the surface of the radiation shell, and the first igniter is connected to the inside of the second air inlet pipe. One end of the external heating tube is sealed with the feed pipe, and the other end of the external heating tube is connected to the outlet pipe, one side of the surface of the first air inlet pipe is connected to the first fuel pipe, and the inside of the first air inlet pipe is connected to the second igniter.

[0010] Preferably, the inner radiation tube is embedded in the outer heating tube, one end of the first air inlet pipe passes through the outer heating tube and is sealed and connected to the inner radiation tube, and one end of the first air outlet pipe passes through the outer heating tube and is sealed and connected to the inner radiation tube.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the radiant tube heat exchanger with a thermal insulation structure can effectively block heat transfer and greatly reduce internal heat loss through a combination of multiple thermal insulation materials, such as thermal insulation coating, ceramic fiber blanket and reflective layer, thereby achieving the purpose of efficient thermal insulation, while reducing energy waste, minimizing heat loss, helping to improve energy utilization efficiency, reduce energy consumption costs, and prevent excessive heat from being dissipated into the surrounding environment, avoiding adverse effects on surrounding equipment or personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the cross-sectional appearance structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of the thermal insulation mechanism of the utility model;

[0014] Figure 3 This is a schematic cross-sectional view of the heat exchange mechanism of the utility model;

[0015] Figure 4 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0016] Figure 5 For this utility model Figure 3 Enlarged structural diagram at B in the middle.

[0017] In the figure: 1. radiation shell; 2. heat insulation mechanism; 201. heat insulation coating; 202. ceramic fiber blanket; 203. reflective layer; 204. first fixing frame; 205. second fixing frame; 3. heat exchange mechanism; 301. external heating tube; 302. internal radiation tube; 303. first air inlet pipe; 304. first air outlet pipe; 305. first igniter; 306. feed pipe; 307. discharge pipe; 308. first fuel pipe; 309. second igniter; 4. second air inlet pipe; 5. second air outlet pipe; 6. second fuel pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0019] See also Figure 1-5 The utility model provides a technical solution: a radiant tube heat exchanger with a heat insulation structure, comprising a radiant shell 1, a heat insulation mechanism 2 is arranged on the surface of the radiant shell 1, a heat exchange mechanism 3 is arranged inside the radiant shell 1, a second air inlet pipe 4 is sealedly connected to one side of the surface of the radiant shell 1, a second air outlet pipe 5 is sealedly connected to one side of the surface of the radiant shell 1, and a second fuel pipe 6 is connected to one side of the surface of the second air inlet pipe 4;

[0020] The heat insulation mechanism 2 includes a heat insulation coating 201, a ceramic fiber blanket 202, a reflective layer 203, a first fixing frame 204 and a second fixing frame 205. The surface of the radiation shell 1 is coated with the heat insulation coating 201, the surface of the radiation shell 1 is connected to the ceramic fiber blanket 202, the surface of the ceramic fiber blanket 202 is connected to the reflective layer 203, the surface of the reflective layer 203 is connected to the first fixing frame 204, and the surface of the reflective layer 203 is connected to the second fixing frame 205. When heat exchange is performed inside the radiation shell 1 to prevent heat loss, the heat insulation coating 201 first forms a first heat insulation line on the surface of the radiation shell 1, which can effectively block a part of the heat from being conducted out through the radiation shell 1. Then the ceramic fiber blanket 202 has good heat insulation performance, which further prevents heat from being transferred outward. Subsequently, the reflective layer 203 can reflect the radiant heat back to reduce heat loss. Then the first fixing frame 204 and the second fixing frame 205 play a role in fixing and supporting the heat insulation structure to ensure the stability of the entire heat insulation structure, thereby minimizing the internal heat loss.

[0021] Furthermore, the thermal insulation coating 201 is a nano thermal insulation layer, and the ceramic fiber blanket 202 is in contact with the surface of the radiation shell 1. Through the arrangement of the thermal insulation coating 201 and the ceramic fiber blanket 202, when in use, the thermal insulation coating 201 is in direct contact with the radiation shell 1, mainly playing a role of preliminary thermal insulation, reducing the heat inside the radiation shell 1 from being transferred to the outside through the radiation shell 1. The ceramic fiber blanket 202 has excellent thermal insulation properties, can effectively block the further conduction of heat, and enhance the thermal insulation effect.

[0022] Furthermore, the reflective layer 203 is aluminum foil, and the reflective layer 203 is in contact with the surface of the ceramic fiber blanket 202. Through the setting of the reflective layer 203, when in use, the reflective layer 203 is aluminum foil. By utilizing the high reflectivity of the aluminum foil, most of the radiant heat can be reflected back, thereby reducing heat loss and reducing heat penetration.

[0023] Furthermore, the heat exchange mechanism 3 includes an outer heat receiving tube 301, an inner radiation tube 302, a first air inlet tube 303, a first air outlet tube 304, a first igniter 305, a feed tube 306, a discharge tube 307, a first fuel tube 308 and a second igniter 309. The outer heat receiving tube 301 is embedded in the radiation shell 1, the inner radiation tube 302 is embedded in the radiation shell 1, the first air inlet tube 303 runs through one side of the surface of the radiation shell 1, and the surface of the radiation shell 1 is connected to one side. The first outlet pipe 304 and the second inlet pipe 4 are connected to the first igniter 305, one end of the external heating pipe 301 is sealedly connected to the feed pipe 306, the other end of the external heating pipe 301 is connected to the discharge pipe 307, one side of the surface of the first inlet pipe 303 is connected to the first fuel pipe 308, and the inside of the first inlet pipe 303 is connected to the second igniter 309. , the first igniter 305, the feed pipe 306, the discharge pipe 307, the first fuel pipe 308 and the second igniter 309 are arranged. When in use, when heat exchange is carried out, the material to be heated first enters the outer heating tube 301 through the feed pipe 306, and flows out from the discharge pipe 307 after heating. During the heating process, a part of the fuel enters the first air inlet pipe 303 from the first fuel pipe 308 and mixes with the air, and then is ignited under the action of the second igniter 309. The hot gas after combustion enters the inner radiation tube 302, and heats the material between the inner radiation tube 302 and the outer heating tube 301 from the inside. The exhaust gas generated during the heating process is discharged from the first exhaust pipe 304. At the same time, another part of the fuel is ignited in the second air inlet pipe 4 through the first igniter 305, burns in the radiation shell 1, and heats the outer heating tube 301 from the outside. The exhaust gas is discharged from the second exhaust pipe 5, which effectively enhances the heating effect, thereby realizing efficient heat exchange of the material to be heated.

[0024] Furthermore, the inner radiation tube 302 is embedded in the outer heat receiving tube 301, one end of the first air inlet pipe 303 passes through the outer heat receiving tube 301 and is sealed with the inner radiation tube 302, one end of the first air outlet pipe 304 passes through the outer heat receiving tube 301 and is sealed with the inner radiation tube 302. Through the arrangement of the outer heat receiving tube 301 and the inner radiation tube 302, when in use, the outer heat receiving tube 301 is the main heat exchange place, and the material to be heated flows therein and is heated, and the inner radiation tube 302 generates heat through the combustion of internal fuel, and transfers heat from the inside to the material in the middle of the outer heat receiving tube 301 to assist in heating.

[0025] Working principle: First, when heat exchange is carried out, the material to be heated enters the outer heating tube 301 through the feed pipe 306, and flows out from the discharge pipe 307 after being heated. During the heating process, a part of the fuel enters the first air inlet pipe 303 from the first fuel pipe 308 and mixes with the air, and then is ignited under the action of the second igniter 309. The hot gas after combustion enters the inner radiation tube 302, and heats the material between the inner radiation tube 302 and the outer heating tube 301 from the inside. The exhaust gas generated during the heating process is discharged from the first exhaust pipe 304. At the same time, another part of the fuel is ignited in the second air inlet pipe 4 through the first igniter 305, burns in the radiation shell 1, and is radiated to the outer heating tube from the outside. 301 is heated, and the exhaust gas is discharged from the second exhaust pipe 5, which effectively enhances the heating effect, thereby realizing efficient heat exchange for the material to be heated. When preventing heat loss, the thermal insulation coating 201 first forms the first thermal insulation line on the surface of the radiation shell 1, which can effectively block a part of the heat from being conducted through the radiation shell 1. Then the ceramic fiber blanket 202 has good thermal insulation performance, which further prevents the heat from being transferred out. Then the reflective layer 203 can reflect the radiant heat back to reduce the loss of heat. Then the first fixing frame 204 and the second fixing frame 205 play the role of fixing and supporting the thermal insulation structure to ensure the stability of the entire thermal insulation structure, thereby minimizing the loss of internal heat.

[0026] 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 radiant tube heat exchanger with a heat insulation structure, comprising a radiant shell (1), characterized in that: The surface of the radiation shell (1) is provided with a heat insulation mechanism (2), the interior of the radiation shell (1) is provided with a heat exchange mechanism (3), one side of the surface of the radiation shell (1) is sealedly connected to a second air inlet pipe (4), one side of the surface of the radiation shell (1) is sealedly connected to a second air outlet pipe (5), and one side of the surface of the second air inlet pipe (4) is connected to a second fuel pipe (6); The heat insulation mechanism (2) comprises a heat insulation coating (201), a ceramic fiber blanket (202), a reflective layer (203), a first fixing frame (204) and a second fixing frame (205); the surface of the radiation shell (1) is coated with the heat insulation coating (201); the surface of the radiation shell (1) is connected to the ceramic fiber blanket (202); the surface of the ceramic fiber blanket (202) is connected to the reflective layer (203); the surface of the reflective layer (203) is connected to the first fixing frame (204); and the surface of the reflective layer (203) is connected to the second fixing frame (205).

2. The radiant tube heat exchanger with a heat insulation structure according to claim 1, characterized in that: The heat-insulating coating (201) is a nano heat-insulating layer, and the ceramic fiber blanket (202) is in contact with the surface of the radiation shell (1).

3. The radiant tube heat exchanger with a heat insulation structure according to claim 1, characterized in that: The reflective layer (203) is aluminum foil, and the reflective layer (203) is in contact with the surface of the ceramic fiber blanket (202).

4. The radiant tube heat exchanger with a heat insulation structure according to claim 1, characterized in that: The heat exchange mechanism (3) comprises an external heat receiving tube (301), an internal radiation tube (302), a first air inlet tube (303), a first air outlet tube (304), a first igniter (305), a feed tube (306), a discharge tube (307), a first fuel tube (308) and a second igniter (309); the external heat receiving tube (301) is embedded in the radiation shell (1); the internal radiation tube (302) is embedded in the radiation shell (1); and the first air inlet tube (303) is penetrated on one side of the surface of the radiation shell (1). 303), a first air outlet pipe (304) is connected to one side of the surface of the radiation shell (1), a first igniter (305) is connected to the inside of the second air inlet pipe (4), a feed pipe (306) is sealed to one end of the external heating pipe (301), a discharge pipe (307) is connected to the other end of the external heating pipe (301), a first fuel pipe (308) is connected to one side of the surface of the first air inlet pipe (303), and a second igniter (309) is connected to the inside of the first air inlet pipe (303).

5. The radiant tube heat exchanger with a heat insulation structure according to claim 4, characterized in that: The inner radiation tube (302) is embedded in the outer heat receiving tube (301), one end of the first air inlet pipe (303) passes through the outer heat receiving tube (301) and is sealedly connected to the inner radiation tube (302), and one end of the first air outlet pipe (304) passes through the outer heat receiving tube (301) and is sealedly connected to the inner radiation tube (302).

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