Carbonization furnace waste discharge pipe heat tracing system

Abstract

The utility model discloses a carbonization furnace waste discharge pipe heat tracing system and belongs to the technical field of carbon fiber production equipment. Comprising a waste discharge pipe, a heat tracing layer and a heat preservation layer, the heat tracing layer is arranged on the outer side wall of the waste discharge pipe, the heat preservation layer is arranged on the outer side of the heat tracing layer, a first hoop and a second hoop which are used for fixing the heat tracing layer are arranged on the waste discharge pipe, the heat tracing layer comprises a flat iron heat pipe and a heating cable, and the head end of the flat iron heat pipe is bent to be in an arc shape. The flat iron heat pipe is fixed to the first hoop and the second hoop, a concave step connector is arranged at the head end of the flat iron heat pipe, a convex step connector is arranged at the tail end of the flat iron heat pipe, and the heating cable is inserted into the flat iron heat pipe. The flat iron heat pipe can be quickly inserted and installed through the convex step connector and the concave step connector, the installation efficiency and the maintenance convenience of the heat tracing system are improved, the step that a heat preservation layer needs to be disassembled and assembled when a heating pipe of a traditional carbonization furnace heat tracing system needs to be replaced is avoided, and the maintenance cost of the heat tracing system is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber production equipment, and in particular relates to a carbonization grate waste pipe heating system. Background Art

[0002] During the process of high-temperature exhaust gas generated by the carbonization furnace passing through the exhaust pipe to the next exhaust gas treatment process, the high-temperature exhaust gas naturally cools down to form tar as the temperature increases. Tar is difficult to clean and easily blocks the exhaust pipe, affecting the subsequent exhaust gas transportation. Therefore, there is generally a heating design on the outer ring of the exhaust pipe to control the temperature of the exhaust pipe and reduce the formation of tar. The traditional carbonization furnace exhaust pipe heating system is complicated to install and inconvenient to maintain. In addition, due to the different technical requirements of each project, the specific location and method of installing the flat iron heat pipe will also change with the design, which creates a large workload and difficulty for both designers and on-site installers. In actual use, there may be insufficient power of the heating cable or damage to the heating cable. If the heating pipe is to be replaced, it is necessary to disassemble the outermost insulation layer and replace it. Multiple disassembly and assembly of the insulation layer will have a certain impact on the insulation performance. At the same time, the insulation material is a harmful substance to the human body. Each disassembly and assembly of the insulation layer requires professional guidance.

[0003] To this end, the applicant has conducted useful explorations and attempts and found solutions to the above problems. The technical solutions to be introduced below were produced in this context. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a carbonizing grate waste pipe heating system.

[0005] The above technical problems of the utility model are mainly solved by the following technical solutions: a carbonizing furnace waste pipe heating system, comprising a waste pipe, a heating layer and a thermal insulation layer, the heating layer is arranged on the outer wall of the waste pipe, the thermal insulation layer is arranged on the outside of the heating layer, the waste pipe is provided with a clamp first and a clamp second for fixing the heating layer, the heating layer comprises a flat iron heat pipe and a heating cable, the head end of the flat iron heat pipe is bent, the head end of the flat iron heat pipe is fixedly connected to the clamp second, the tail end of the flat iron heat pipe is fixedly connected to the clamp first, the head end of the flat iron heat pipe is provided with a concave step interface, the tail end of the flat iron heat pipe is provided with a convex step interface that can be plugged with the concave step interface, and the heating cable is plugged into the flat iron heat pipe.

[0006] Preferably, a plurality of clamps for fixing and positioning the flat iron heat pipe are provided at intervals on the exhaust pipe, and the ends and the middle section of the flat iron heat pipe are respectively fixed on the plurality of clamps.

[0007] Preferably, a plurality of flat iron heat pipes are provided in a ring shape on the outer side wall of the exhaust pipe, and the bending parts of the first ends of the plurality of flat iron heat pipes are fixed on the second clamp.

[0008] Preferably, the second clamp includes an inner ring, an outer ring and a support plate. There are two inner rings and they are symmetrically arranged on the outer wall of the exhaust pipe. Support plates are fixed on the two inner rings. Outer rings are fixed on the support plates of the two inner rings. The two outer rings are twisted to be inclined to fit the bending part of the head end of the flat iron heat pipe.

[0009] The utility model has the beneficial effects:

[0010] Compared with the prior art, the utility model can quickly connect multiple sections of flat iron heat pipes by respectively setting mutually pluggable concave step interfaces and convex step interfaces at the head and the tail of the flat iron heat pipe, thereby reducing the difficulty of on-site installation. After the flat iron heat pipe is installed, the metal heating cable can be directly inserted into the flat iron heat pipe to complete the installation. The heating cable can also be directly pulled out and replaced for later maintenance and replacement, without excessive conflict with the insulation layer, thereby improving the installation efficiency and maintenance convenience of the heating system. It avoids the steps of disassembling and installing the insulation layer when the heating pipe needs to be replaced in the traditional carbonization furnace heating system, thereby reducing the maintenance cost of the heating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the waste pipe and the heating layer;

[0013] Figure 3 It is a schematic diagram of the structure of the front and rear ends of the flat iron heat pipe;

[0014] Figure 4 It is a schematic diagram of the connection and installation structure of multiple sections of flat iron heat pipes of the utility model.

[0015] In the figure: 1. exhaust pipe; 2. heating layer; 3. insulation layer; 4. clamp one; 5. clamp two; 6. flat iron heat pipe; 7. heating cable; 8. concave step interface; 9. convex step interface; 10. inner ring; 11. outer ring; 12. support plate. DETAILED DESCRIPTION

[0016] The following are examples and the attached Figure 1-Figure 4 The structure is shown in the figure, and the technical solution of the utility model is further specifically described.

[0017] Embodiment: A carbonization furnace waste pipe heating system, comprising a waste pipe 1, a heating layer 2 and a thermal insulation layer 3, wherein the heating layer 2 is arranged on the outer wall of the waste pipe 1, and the thermal insulation layer 3 is arranged on the outer side of the heating layer 2, and the waste pipe 1 is provided with a clamp 1 4 and a clamp 2 5 for fixing the heating layer 2, and the heating layer 2 comprises a flat iron heat pipe 6 and a heating cable 7, and the number of the flat iron heat pipes 6 is 6, and the 6 flat iron heat pipes 6 are distributed in a ring array on the outer wall of the waste pipe 1, and the 6 flat iron heat pipes 6 are fixed on the waste pipe 1 by welding. On the clamp 1 4 and the clamp 2 5, the head ends of the 6 flat iron heat pipes 6 are bent, and the head ends of the 6 flat iron heat pipes 6 are fixedly connected to the clamp 2 5. A plurality of clamps 1 4 are fixed at intervals on the outer wall of the waste discharge pipe 1, and the ends and middle sections of the 6 flat iron heat pipes 6 are respectively fixedly connected to the plurality of clamps 1 4. The head ends of the 6 flat iron heat pipes 6 are provided with concave step interfaces 8, and the ends of the 6 flat iron heat pipes 6 are provided with convex step interfaces 9 that can be plugged with the concave step interfaces 8. Heating cables 7 are plugged into the 6 flat iron heat pipes 6.

[0018] The clamp 2 5 includes an inner ring 10, an outer ring 11 and a support sheet 12. There are two inner rings 10 and they are symmetrically arranged on the outer wall of the exhaust pipe 1. The two inner rings 10 are fixed with support sheets 12. The support sheets 12 of the two inner rings 10 are fixed with outer rings 11. The two outer rings 11 are twisted and inclined to fit the bending part of the head end of the flat iron heat pipe 6.

[0019] The heating cable 7 is a high-temperature resistant MI heating cable, which is used to heat the waste pipe 1. Six flat iron heat pipes 6 are distributed in a circular array on the outside of the waste pipe 1, and heating cables 7 are arranged inside to make the waste pipe 1 heated evenly. The heating cables 7 in the six flat iron heat pipes 6 are divided into two groups of corner connection or star connection according to the actual heating demand. The head end of the flat iron heat pipe 6 is prefabricated with a concave step interface 8, and the end of the flat iron heat pipe 6 is prefabricated with a convex step interface 9. When multiple sections of flat iron heat pipes 6 need to be connected during installation, two sections of flat iron heat pipes 6 can be quickly connected through the concave step interface 8 and the convex step interface 9 that can be plugged into each other, and at the same time, it can also avoid the heating cable 7 being exposed to the outside. In addition to the heating cable 7, the head end of the flat iron heat pipe 6 also reserves space for inserting a thermocouple, so as to closely measure the temperature of the heating end and then feed it back to the control system.

[0020] The working principle of this utility model:

[0021] When in use, the installer installs the clamp 1 4 and the clamp 2 5 on the outer wall of the waste discharge pipe 1 according to the actual length of the waste discharge pipe 1 required on site, and then welds 6 flat iron heat pipes 6 to the clamp 1 4 and the clamp 2 5 in a circular distribution, and the 6 flat iron heat pipes 6 are bent at the head end and the bent part is welded to the clamp 2 5, and finally the heating cables 7 are respectively inserted into the 6 flat iron heat pipes 6; Figure 4As shown in the figure (the middle circular line of the insulation layer 3 is the connection point of the concave step interface 8 and the convex step interface 9 of the flat iron heat pipes at both ends), if the exhaust pipe 1 is long and needs multiple sections of flat iron heat pipes 6 to be spliced ​​(the multiple sections of flat iron heat pipes 6 prefabricated in advance have concave step interfaces 8 and convex step interfaces 9 prefabricated at the head end and the tail end respectively, and the total length of the multiple sections of flat iron heat pipes 6 is customized according to actual needs), after the first section of the flat iron heat pipe 6 is welded, the concave step interface 8 and convex step interface 9 prefabricated at the head end of the second section of the flat iron heat pipe 6 (only the head end of the first section of the flat iron heat pipe 6 is bent) is prefabricated at the head end of the second section of the flat iron heat pipe 6. The port 8 is plugged into the convex step interface 9 at the end of the first section of the flat iron heat pipe 6, and then the second section of the flat iron heat pipe 6 is welded to the corresponding clamp 4 on the exhaust pipe 1. If the exhaust pipe 1 needs to be further extended under other working conditions, it is only necessary to connect the same flat iron heat pipe 6 to the end and continue to extend it. Finally, the heating cable 7 is inserted into the flat iron heat pipe 6. When the heating cable 7 is replaced in the later maintenance, the original heating cable 7 can be directly pulled out and replaced with a new heating cable 7 without disassembling the insulation layer 3, which improves the installation efficiency and maintenance convenience of the heating system. It avoids the steps of disassembling the insulation layer 3 when the traditional carbonization furnace heating system needs to replace the heating pipe, and reduces the maintenance cost of the heating system.

[0022] Finally, it should be pointed out that the above embodiments are only representative examples of the present utility model. Obviously, the present utility model is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model should be considered to belong to the protection scope of the present utility model.

Claims

1. A carbonizing grate waste pipe heating system, characterized in that: The invention comprises a waste discharge pipe (1), a heating layer (2) and a heat-insulating layer (3), wherein the heating layer (2) is arranged on the outer wall of the waste discharge pipe (1), and the heat-insulating layer (3) is arranged on the outer side of the heating layer (2). The waste discharge pipe (1) is provided with a clamp first (4) and a clamp second (5) for fixing the heating layer (2). The heating layer (2) comprises a flat iron heat pipe (6) and a heating cable (7). The head end of the flat iron heat pipe (6) is bent into an arc shape, the head end of the flat iron heat pipe (6) is fixedly connected to the clamp second (5), and the tail end of the flat iron heat pipe (6) is fixedly connected to the clamp first (4). The head end of the flat iron heat pipe (6) is provided with a concave step interface (8), and the tail end of the flat iron heat pipe (6) is provided with a convex step interface (9) which can be plugged into the concave step interface (8), and the heating cable (7) is plugged into the flat iron heat pipe (6).

2. A carbonizing grate waste pipe heating system according to claim 1, characterized in that: A plurality of clamps (4) for fixing and positioning the flat iron heat pipe (6) are arranged at intervals on the waste discharge pipe (1); the ends and the middle section of the flat iron heat pipe (6) are respectively fixed on the plurality of clamps (4).

3. A carbonizing grate waste pipe heating system according to claim 2, characterized in that: A plurality of flat iron heat pipes (6) are provided in a ring shape on the outer side wall of the waste discharge pipe (1), and the bending parts of the head ends of the plurality of flat iron heat pipes (6) are fixed on the second clamping hoop (5).

4. The carbonizing grate waste pipe heating system according to claim 1, characterized in that: The second clamp (5) comprises an inner ring (10), an outer ring (11) and a support sheet (12); the inner rings (10) are two and are symmetrically arranged on the outer wall of the exhaust pipe (1); the two inner rings (10) are both fixed with a support sheet (12); the support sheets (12) of the two inner rings (10) are both fixed with an outer ring (11); and the two outer rings (11) are both twisted to be inclined so as to fit the bending part of the head end of the flat iron heat pipe (6).

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