High safety electric heating furnace

Abstract

The utility model discloses a high security's electric heating furnace, include: three groups of electric heating pipe subassembly, from top to bottom divide into three rows and arrange in electric heating furnace, the two end of each electric heating pipe is fixed in the back of electric heating furnace's wiring panel, is equipped with the wiring snout at the wiring panel front position department of corresponding each end, first copper row, second copper row, third copper row and fourth copper row, all are fixed on the wiring panel through insulator and stud, first copper row and fourth copper row are connected with the U phase of three -phase electricity, second copper row is connected with the V phase of three -phase electricity, third copper row is connected with the W phase of three -phase electricity, wherein, first copper row sets up between the two end of first group electric heating pipe subassembly, second copper row sets up between the two end of second group electric heating pipe subassembly, third copper row sets up between the two end of third group electric heating pipe subassembly, and fourth copper row sets up below third group electric heating pipe subassembly.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a highly safe electric heating furnace. Background Technology

[0002] The photovoltaic industry plays a vital role in adjusting the energy structure, promoting changes in energy production and consumption patterns, and contributing significantly to ecological civilization construction. Photovoltaic power generation is a technology that uses solar energy to generate electricity. Its advantages include environmental friendliness, renewability, and energy conservation. However, photovoltaic power generation presents the problem of waste gas emissions. These emissions can pollute the environment and even harm human health; therefore, waste gas treatment is a crucial component.

[0003] Different types of waste gas require different treatment processes. Some waste gases need to be heated to a certain temperature before reaction treatment, which is where electric heating furnaces come in. Current technology uses copper busbars for internal wiring within the furnace, which is then connected to the electrical control cabinet via cables. This method is suitable when the heating temperature doesn't need to be too high; however, if the heating temperature is too high, it can lead to dangerous situations such as burning out the copper busbars and wiring lugs. Utility Model Content

[0004] In view of this, the present invention provides a highly safe electric heating furnace to solve the problem that existing electric heating furnaces may burn out copper busbars and wiring lugs when the heating temperature is too high.

[0005] This utility model embodiment provides a highly safe electric heating furnace, comprising:

[0006] Three sets of electric heating tube assemblies are arranged in three rows from top to bottom inside the electric heating furnace. The two ends of each electric heating tube are fixed to the back of the wiring panel of the electric heating furnace, and a wiring lug is provided on the front of the wiring panel corresponding to each end.

[0007] The first, second, third, and fourth copper busbars are all fixed to the terminal block by insulators and studs; the first and fourth copper busbars are connected to the U phase of the three-phase power supply; the second copper busbar is connected to the V phase of the three-phase power supply; and the third copper busbar is connected to the W phase of the three-phase power supply.

[0008] The first copper busbar is located between the two ends of the first group of electric heating tube assemblies, the second copper busbar is located between the two ends of the second group of electric heating tube assemblies, the third copper busbar is located between the two ends of the third group of electric heating tube assemblies, and the fourth copper busbar is located below the third group of electric heating tube assemblies.

[0009] One end of the first set of electric heating tubes is electrically connected to the first copper busbar via a high-temperature wire; the other end of the first set of electric heating tubes is electrically connected to the second copper busbar via a high-temperature wire; one end of the second set of electric heating tubes is electrically connected to the second copper busbar via a high-temperature wire; the other end of the second set of electric heating tubes is electrically connected to the third copper busbar via a high-temperature wire; one end of the third set of electric heating tubes is electrically connected to the third copper busbar via a high-temperature wire; the other end of the third set of electric heating tubes is electrically connected to the fourth copper busbar via a high-temperature wire.

[0010] Optionally, the wiring panel is located in the wiring cavity inside the electric heating furnace.

[0011] Optionally, the first copper busbar, the second copper busbar, the third copper busbar, and the fourth copper busbar are all fixed to the terminal block by three insulators; wherein the first and second insulators are fixed at both ends of the first / second / third / fourth copper busbar, and the third insulator is fixed in the middle of the first / second / third / fourth copper busbar.

[0012] Optionally, the first, second, third, and fourth copper busbars are nickel-plated copper busbars; the wiring lugs are made of 316 stainless steel.

[0013] Optionally, the first copper busbar is led to the U phase of the three-phase power transfer box through three 16mm² high-temperature wires; the second copper busbar is led to the V phase of the three-phase power transfer box through six 16mm² high-temperature wires; the third copper busbar is led to the W phase of the three-phase power transfer box through six 16mm² high-temperature wires; and the fourth copper busbar is led to the U phase of the three-phase power transfer box through three 16mm² high-temperature wires.

[0014] Optionally, each electric heating element assembly includes eight electric heating elements.

[0015] Optionally, the wiring panel, part of the furnace wall, and the furnace door constitute the wiring cavity of the electric heating furnace.

[0016] Optionally, it also includes: a surface-mount temperature sensor, fixed inside the wiring cavity.

[0017] Optionally, it also includes: a wiring hole, located in the lower left or lower right corner of the wiring cavity.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a highly safe electric heating furnace. Addressing the issue of copper busbars easily burning out during use, it utilizes high-temperature wires for internal wiring. High-temperature wires are a mature product on the market, and due to their special outer sheath material, some can withstand temperatures up to 1200℃ or even higher. Different cross-sectional areas of the high-temperature wires are also available, offering options for different heating powers. Nickel-plated copper busbars can also be used, effectively preventing oxidation and corrosion and significantly extending their service life. Similarly, the connectors used for internal wiring can be made of 316 stainless steel, which is more corrosion-resistant to high-temperature wires. By changing these three aspects, the problem of copper busbar and connector burnout when the heating furnace reaches excessively high temperatures is overcome, improving the overall heating efficiency of the furnace and significantly enhancing safety from the user's perspective. Attached Figure Description

[0020] The features and advantages of this utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the utility model in any way. In the drawings:

[0021] Figure 1 The diagram shows the wiring structure of a high-safety electric heating furnace according to an embodiment of the present invention.

[0022] Figure 2 The diagram shows the circuit connection of the electric heating tube of a high-safety electric heating furnace according to an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] This utility model provides a highly safe electric heating furnace, comprising: three sets of electric heating tube assemblies and four copper busbars. The three sets of electric heating tube assemblies are arranged in three rows from top to bottom inside the electric heating furnace. Two ends of each electric heating tube are fixed to the back of the wiring panel of the electric heating furnace. A wiring lug is provided on the front of the wiring panel corresponding to each end. The first, second, third, and fourth copper busbars are all fixed to the wiring panel by insulators and studs. The first and fourth copper busbars are connected to the U phase of the three-phase power supply. The second copper busbar is connected to the V phase of the three-phase power supply. The third copper busbar is connected to the W phase of the three-phase power supply.

[0025] like Figure 1 As shown, the first copper busbar 21 is disposed between the two ends of the first group of electric heating tube assemblies, the second copper busbar 22 is disposed between the two ends of the second group of electric heating tube assemblies, the third copper busbar 23 is disposed between the two ends of the third group of electric heating tube assemblies, and the fourth copper busbar 24 is disposed below the third group of electric heating tube assemblies. Each group of electric heating tube assemblies consists of several electric heating tubes. In a specific embodiment, a group of electric heating tube assemblies consists of eight electric heating tubes connected in parallel.

[0026] by Figure 1 Taking the electric heating tubes 10 arranged in the first row as an example, one end 101 of the electric heating tube 10 is electrically connected to the first copper busbar 21 via a high-temperature wire, and the other end 102 of the electric heating tube 10 is electrically connected to the second copper busbar 22 via a high-temperature wire. One end of the second group of electric heating tubes is electrically connected to the second copper busbar via a high-temperature wire, and the other end of the second group of electric heating tubes is electrically connected to the third copper busbar via a high-temperature wire. One end of the third group of electric heating tubes is electrically connected to the third copper busbar via a high-temperature wire, and the other end of the third group of electric heating tubes is electrically connected to the fourth copper busbar via a high-temperature wire. The eight electric heating tubes in each group are connected in parallel, and the connection relationship between the three groups of electric heating tube assemblies and the three-phase power supply is as follows: Figure 2 As shown, a triangular connection is used. The upper end of electric heating element assembly 1 is denoted as U1, and the lower end as U2; the upper end of electric heating element assembly 2 is denoted as V1, and the lower end as V2; the upper end of electric heating element assembly 3 is denoted as W1, and the lower end as W2. Figure 1 The ends are outlined in the dashed line. Both ends of each electric heating element are connected to a copper busbar via 6mm² high-temperature wires. In a specific embodiment, several terminals are evenly distributed on the copper busbar, and each high-temperature wire is connected to a different terminal on the copper busbar surrounding its respective end.

[0027] The first copper busbar is connected to the U phase of the three-phase power transfer box via three 16mm² high-temperature wires; the second copper busbar is connected to the V phase of the three-phase power transfer box via six 16mm² high-temperature wires; the third copper busbar is connected to the W phase of the three-phase power transfer box via six 16mm² high-temperature wires; and the fourth copper busbar is connected to the U phase of the three-phase power transfer box via three 16mm² high-temperature wires. In a specific embodiment, the cross-sectional area of ​​the high-temperature wires is selected according to actual needs to adapt to different heating power requirements.

[0028] As an optional implementation, the wiring panel, part of the furnace wall, and the furnace door constitute the wiring cavity of the electric heating furnace. The wiring panel is located in the wiring cavity inside the electric heating furnace. A surface-mount temperature sensor is fixed inside the wiring cavity and mounted on the furnace wall to monitor the furnace wall temperature in real time.

[0029] As an optional implementation, the first copper busbar, the second copper busbar, the third copper busbar, and the fourth copper busbar are all fixed to the terminal block by three insulators; wherein, the first insulator and the second insulator are fixed at both ends of the first copper busbar / second copper busbar / third copper busbar / fourth copper busbar, and the third insulator is fixed in the middle of the first copper busbar / second copper busbar / third copper busbar / fourth copper busbar.

[0030] In this embodiment, one end of the insulator is fixed to the terminal block, and the copper busbar is fixedly connected to the other end of the insulator by an M8*16 stud.

[0031] As an optional implementation, the first, second, third, and fourth copper busbars are nickel-plated copper busbars to effectively prevent oxidation and corrosion. The connector lugs are made of 316 stainless steel, which is corrosion-resistant at high temperatures.

[0032] As an optional implementation, a wiring hole 3 is also included, which is located in the lower left or lower right corner of the wiring cavity. In a specific embodiment, several cables that connect the copper busbar to the three-phase power supply are connected to the outside through the wiring hole, usually connected to a three-phase power transfer box. Depending on the placement of the transfer box, the wiring hole is located in the lower left or lower right corner of the wiring cavity.

[0033] Taking a 96kW heating furnace as an example, the electric heating tubes are arranged in three groups, representing three phases (U / V / W), connected in a delta configuration. A total of four copper busbars are used, secured at both ends and in the middle with ceramic insulators. Each heating tube is connected using a 6mm² high-temperature wire. Stainless steel lugs are used to connect the high-temperature wire to the copper busbars, converging the current onto the busbars. Then, a high-temperature wire with the same cross-sectional area as the busbar current is used to converge the three-phase current to the junction box, which is then connected to the distribution cabinet using a standard cable. Depending on the actual situation, a surface-mount temperature sensor can be added inside the heating furnace to enable real-time monitoring of the actual internal temperature.

[0034] This utility model provides a highly safe electric heating furnace. Addressing the issue of copper busbars easily burning out during use, it utilizes high-temperature wires for internal wiring. High-temperature wires are a mature product on the market, and due to their special outer sheath material, some can withstand temperatures up to 1200℃ or even higher. Different cross-sectional areas of the high-temperature wires are also available, offering options for different heating powers. Nickel-plated copper busbars can also be used, effectively preventing oxidation and corrosion and significantly extending their service life. Similarly, the connectors used for internal wiring can be made of 316 stainless steel, which is more corrosion-resistant to high-temperature wires. By changing these three aspects, the problem of copper busbar and connector burnout when the heating furnace reaches excessively high temperatures is overcome, improving the overall heating efficiency of the furnace and significantly enhancing safety from the user's perspective.

[0035] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A highly safe electric heating furnace, characterized in that, include: Three sets of electric heating tube assemblies are arranged in three rows from top to bottom inside the electric heating furnace. The two ends of each electric heating tube are fixed to the back of the wiring panel of the electric heating furnace, and a wiring lug is provided on the front of the wiring panel corresponding to each end. The first, second, third, and fourth copper busbars are all fixed to the terminal block by insulators and studs; the first and fourth copper busbars are connected to the U phase of the three-phase power supply; the second copper busbar is connected to the V phase of the three-phase power supply; and the third copper busbar is connected to the W phase of the three-phase power supply. The first copper busbar is disposed between the two ends of the first group of electric heating tube assemblies, the second copper busbar is disposed between the two ends of the second group of electric heating tube assemblies, the third copper busbar is disposed between the two ends of the third group of electric heating tube assemblies, and the fourth copper busbar is disposed below the third group of electric heating tube assemblies. One end of the first group of electric heating tubes is electrically connected to the first copper busbar via a high-temperature wire; the other end of the first group of electric heating tubes is electrically connected to the second copper busbar via a high-temperature wire; one end of the second group of electric heating tubes is electrically connected to the second copper busbar via a high-temperature wire; the other end of the second group of electric heating tubes is electrically connected to the third copper busbar via a high-temperature wire; one end of the third group of electric heating tubes is electrically connected to the third copper busbar via a high-temperature wire; and the other end of the third group of electric heating tubes is electrically connected to the fourth copper busbar via a high-temperature wire.

2. The high-safety electric heating furnace according to claim 1, characterized in that, The wiring panel is located in the wiring cavity inside the electric heating furnace.

3. The high-safety electric heating furnace according to claim 1, characterized in that, The first copper busbar, the second copper busbar, the third copper busbar, and the fourth copper busbar are all fixed to the terminal block by three insulators; wherein, the first insulator and the second insulator are fixed at both ends of the first copper busbar / second copper busbar / third copper busbar / fourth copper busbar, and the third insulator is fixed in the middle of the first copper busbar / second copper busbar / third copper busbar / fourth copper busbar.

4. The high-safety electric heating furnace according to claim 1, characterized in that, The first copper busbar, the second copper busbar, the third copper busbar and the fourth copper busbar are nickel-plated copper busbars; the connector lugs are made of 316 stainless steel.

5. The high-safety electric heating furnace according to claim 1, characterized in that, The first copper busbar is led to the U phase of the three-phase power transfer box via three 16mm² high-temperature wires; the second copper busbar is led to the V phase of the three-phase power transfer box via six 16mm² high-temperature wires; the third copper busbar is led to the W phase of the three-phase power transfer box via six 16mm² high-temperature wires; and the fourth copper busbar is led to the U phase of the three-phase power transfer box via three 16mm² high-temperature wires.

6. The high-safety electric heating furnace according to claim 1, characterized in that, Each of the electric heating tube assemblies comprises eight electric heating tubes.

7. The high-safety electric heating furnace according to claim 1, characterized in that, The wiring panel, part of the box wall of the electric heating furnace, and the box door constitute the wiring cavity of the electric heating furnace.

8. The high-safety electric heating furnace according to claim 7, characterized in that, Also includes: A surface-mount temperature sensor is fixed inside the wiring cavity.

9. The high-safety electric heating furnace according to claim 7, characterized in that, Also includes: The wiring hole is located in the lower left or lower right corner of the wiring cavity.

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