Multi-temperature-level heating medium electric heating furnace

Abstract

The utility model discloses a multi-temperature-level heating medium electric heating furnace which comprises a first boiler barrel, a plurality of first electric heating pipes, a first flange, a first output pipe, a heating medium input pipe, a second boiler barrel, a plurality of second electric heating pipes, a second flange and a second output pipe. The second boiler barrel is fixed above the closed end of the first boiler barrel, an inner cavity of the first boiler barrel is in fluid communication with an inner cavity of the second boiler barrel through a connecting pipe, the second flange is arranged at the open end of the second boiler barrel and connected with the open end of the second boiler barrel in a sealed mode, and one ends of the second electric heating pipes are connected with the power source. The other end of the second output pipe penetrates through the second flange to enter an inner cavity of the second boiler barrel, the second output pipe is arranged on one side of the closed end of the second boiler barrel, and the second output pipe is in fluid communication with the inner cavity of the second boiler barrel. According to the utility model, two kinds of heating media with different temperatures can be output at the same time to meet different production requirements, and the heat utilization requirements of users at diversified temperatures are met.

Description

Technical Field

[0001] This utility model relates to an electric heating furnace for industrial heat exchange, and more particularly to a multi-temperature-position heat medium electric heating furnace, belonging to the field of industrial boiler technology. Background Technology

[0002] Electric heating furnaces are widely used in heating, drying, or softening processes in food, chemical fiber, and petrochemical industries. Existing electric heating furnaces, such as the one disclosed in Chinese utility model patent ZL201720228043.4, include an oil storage tank, a heater, and an electrical control box. The oil storage tank is connected to the upper end of a heat exchange box via a support frame. The heater is connected to a hydraulic oil tank via a hydraulic pump, and a heating tube is installed inside the heater. The heater is connected to a circulating pump through its lower oil inlet, and has a drain port at its lower end. The heater is connected to an oil supply pipe through its upper oil outlet, and a flow control valve and a temperature measuring instrument are installed on the outside of the oil outlet. The electrical control box is electrically connected to the hydraulic pump, heating tube, temperature measuring instrument, and circulating pump. However, existing electric heating furnaces have the following drawbacks in practical operation: they can only output heat transfer oil at one temperature during production, failing to meet the diverse temperature heating needs of users. In addition, most existing electric heating furnaces have simple and complex structures, resulting in high manufacturing costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a multi-temperature electric heating furnace that can output two temperatures of heat medium for heat exchange in production, meet the diverse temperature heating needs of users, and has a simple structure and convenient control.

[0004] To solve the above-mentioned technical problems, this utility model employs a multi-temperature-position electric heating furnace for heat transfer media, comprising a first boiler drum with an inner cavity storing heat transfer media, a plurality of first electric heating tubes for heating the heat transfer media, a first flange, a first output pipe, and a heat transfer media input pipe. The first boiler drum is cylindrical, with one end open and the other end closed. The first flange is disposed at the open end of the first boiler drum and is sealed to the open end of the first boiler drum. One end of each of the plurality of first electric heating tubes is connected to a power source, and the other end of each of the plurality of first electric heating tubes passes through the first flange and enters the inner cavity of the first boiler drum. The first output pipe is disposed on one side of the open end of the first boiler drum, and the first output pipe and the heat transfer media input pipe are fluidly connected to the inner cavity of the first boiler drum. This multi-temperature-position electric heating furnace for heat transfer media... The furnace also includes a second boiler drum, several second electric heating tubes, a second flange, and a second output pipe. The second boiler drum is cylindrical, with one end open and the other end closed. The first and second boiler drums are arranged horizontally and parallel to each other, and the second boiler drum is fixedly installed above the closed end of the first boiler drum. The inner cavity of the first boiler drum is fluidly connected to the inner cavity of the second boiler drum through a connecting pipe. The second flange is located at the open end of the second boiler drum and is sealed to the open end of the second boiler drum. One end of each of the several second electric heating tubes is connected to a power source, and the other end of each of the several second electric heating tubes passes through the second flange and enters the inner cavity of the second boiler drum. The second output pipe is located on one side of the closed end of the second boiler drum and is fluidly connected to the inner cavity of the second boiler drum.

[0005] In a preferred embodiment of this utility model, a first temperature sensor is provided in the first output tube, and a second temperature sensor is provided in the second output tube. The first temperature sensor, the second temperature sensor, the first electric heating tube, and the second electric heating tube are electrically connected to the controller of the multi-temperature heat medium electric heating furnace.

[0006] In a preferred embodiment of this utility model, the electronic controller of the multi-temperature heat medium electric heating furnace is a digital controller, an embedded industrial controller, an industrial computer, or a PLC programmable controller.

[0007] In a preferred embodiment of this utility model, the heat medium is heat transfer oil, and the second boiler drum is fixedly installed above the closed end of the first boiler drum by at least two support seats.

[0008] By adopting the above structure, this utility model has the following beneficial effects:

[0009] This utility model comprises a second boiler drum, several second electric heating tubes, a second flange, and a second output pipe. One end of the second boiler drum is open, and the other end is closed. The first and second boiler drums are arranged horizontally and parallel to each other. The second boiler drum is fixedly installed above the closed end of the first boiler drum. The inner cavity of the first boiler drum is fluidly connected to the inner cavity of the second boiler drum through a connecting pipe. The second flange is located at the open end of the second boiler drum and is sealed to the open end of the second boiler drum. One end of each of the several second electric heating tubes is connected to a power source, and the other end of each of the several second electric heating tubes passes through the second flange and enters the inner cavity of the second boiler drum. The second output pipe is located on one side of the closed end of the second boiler drum and is fluidly connected to the inner cavity of the second boiler drum. During operation, the heat medium inside the first boiler drum is heated to a set temperature by the first electric heating tube and then output to the external production site through the first output tube to meet the first production need. At the same time, the heat medium heated by the first electric heating tube enters the inner cavity of the second boiler drum through the connecting pipe. The second electric heating tube reheats the heated heat medium to another set temperature and then outputs it to the external production site through the second output tube to meet the second production need. In other words, this utility model can simultaneously output two heat media of different temperatures to meet different production needs, thereby satisfying the user's diversified temperature heating requirements.

[0010] This invention features a first temperature sensor housed in the first output tube and a second temperature sensor housed in the second output tube. The first and second temperature sensors, the first and second electric heating tubes, and the second electric heating tube are electrically connected to an electronic controller. With this structure, the invention measures the temperature data of the heat medium in the first and second output tubes using the first and second temperature sensors, respectively, and transmits the data to the electronic controller. The electronic controller then controls the heating time or power of the heat medium by the first and second electric heating tubes, thereby achieving precise control of the temperature of the heat medium output from the first and second output tubes, and thus better meeting production needs.

[0011] This utility model has a simple structure, low manufacturing cost, and convenient control, and can meet the needs of users with multiple temperature loads in the process. Attached Figure Description

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the structure of a multi-temperature-position heat medium electric heating furnace according to this utility model. Detailed Implementation

[0014] See Figure 1The multi-temperature electric heating furnace shown includes a first boiler drum 1 with a heat medium 6 stored in its inner cavity, and a plurality of first electric heating tubes 2, a first flange 3, a first output pipe 4, and a heat medium input pipe 5 for heating the heat medium 6. The first boiler drum 1 is cylindrical, with one end open and the other end closed. The first flange 3 is located at the open end of the first boiler drum 1, and the first flange 3 is preferably sealed to the open end of the first boiler drum 1 by welding or other means. One end of each of the plurality of first electric heating tubes 2 is preferably connected to a power source through a junction box 15 and a cable, and the other end of each of the plurality of first electric heating tubes 2 passes through the first flange 3 and enters the inner cavity of the first boiler drum 1. The first output pipe 4 is located on one side of the open end of the first boiler drum 1, and the first output pipe 4 and the heat medium input pipe 5 are fluidly connected to the inner cavity of the first boiler drum 1. The multi-temperature electric heating furnace also includes a second boiler drum 7 and a plurality of... The second electric heating element 8, the second flange 9, and the second output pipe 10 are provided. The second pot 7 is cylindrical, with one end open and the other end closed. The first pot 1 and the second pot 7 are arranged horizontally and parallel to each other, and the second pot 7 is fixedly installed above the closed end of the first pot 1. The inner cavity of the first pot 1 is fluidly connected to the inner cavity of the second pot 7 through a connecting pipe 11. The second flange 9 is located at the open end of the second pot 7, and the second flange 9 is preferably sealed to the open end of the second pot 7 by welding or other means. One end of each of the plurality of second electric heating elements 8 is preferably connected to a power source through a junction box 16 and a cable. The other end of each of the plurality of second electric heating elements 8 passes through the second flange 9 and enters the inner cavity of the second pot 7. The second output pipe 10 is located on one side of the closed end of the second pot 7, and the second output pipe 10 is fluidly connected to the inner cavity of the second pot 7.

[0015] As a preferred embodiment of this utility model, such as Figure 1 As shown, a first temperature sensor 12 is provided in the first output tube 4, and a second temperature sensor 13 is provided in the second output tube 10. The first temperature sensor 12, the second temperature sensor 13, the first electric heating tube 2, the second electric heating tube 8 and the controller of the multi-temperature heat medium electric heating furnace are electrically connected by wired cable or wireless signal.

[0016] In a preferred embodiment of this utility model, the electric controller of the multi-temperature heat medium electric heating furnace is a digital controller, such as a DDC digital controller, an embedded industrial controller, an industrial computer, or a PLC programmable controller. The electric controller is not shown in the figure.

[0017] In a preferred embodiment of this utility model, the heat transfer medium 6 is heat-conducting oil, but it can also be water or phosphate ester, etc. The second boiler drum 7 is preferably fixedly mounted above the closed end of the first boiler drum 1 by welding through at least two support seats 14. Figure 1 As shown.

[0018] When this invention is in operation, the heat medium 6 in the inner cavity of the first boiler drum 1 is heated to a set temperature by the first electric heating tube 2, and then output to the external production site through the first output tube 4 to meet the first production need. At the same time, the heat medium 6 heated by the first electric heating tube 2 enters the inner cavity of the second boiler drum 7 through the connecting tube 11. The second electric heating tube 8 reheats the heated heat medium 6 to another set temperature, and then outputs it to the external production site through the second output tube 10 to meet the second production need. This invention can output two heat mediums of different temperatures at the same time to meet different production needs.

[0019] After trial use, this utility model can simultaneously output two heat transfer media at different temperatures to meet different production needs, satisfy users' diversified temperature heating requirements, and has a simple structure and convenient control, achieving good practical results.

Claims

1. A multi-temperature-level heat medium electric heating furnace, comprising a first kettle drum (1) in which a heat medium (6) is stored, a plurality of first electric heating pipes (2) for heating the heat medium (6), a first flange (3), a first output pipe (4), and a heat medium input pipe (5), the first kettle drum (1) is cylindrical, one end of the first kettle drum (1) is an open end, and the other end is a closed end, the first flange (3) is arranged at the open end of the first kettle drum (1), and the first flange (3) is sealingly connected with the open end of the first kettle drum (1), one end of the plurality of first electric heating pipes (2) is connected with a power supply, the other end of the plurality of first electric heating pipes (2) penetrates through the first flange (3) into the inner cavity of the first kettle drum (1), the first output pipe (4) is arranged at one side of the open end of the first kettle drum (1), and the first output pipe (4), the heat medium input pipe (5), and the inner cavity of the first kettle drum (1) are in fluid communication, characterized in that: The multi-temperature level heat medium electric heating furnace further comprises a second kettle cylinder (7), a plurality of second electric heating pipes (8), a second flange (9) and a second output pipe (10), the second kettle cylinder (7) is in a cylindrical shape, one end of the second kettle cylinder (7) is an open end, and the other end is a closed end, the first kettle cylinder (1) and the second kettle cylinder (7) are arranged horizontally and in parallel, the second kettle cylinder (7) is fixedly installed above the closed end of the first kettle cylinder (1), the inner cavity of the first kettle cylinder (1) is in fluid communication with the inner cavity of the second kettle cylinder (7) through a connecting pipe (11), the second flange (9) is arranged at the open end of the second kettle cylinder (7), and the second flange (9) is in sealing connection with the open end of the second kettle cylinder (7), one end of each of the plurality of second electric heating pipes (8) is connected with a power supply, the other end of each of the plurality of second electric heating pipes (8) penetrates through the second flange (9) and enters the inner cavity of the second kettle cylinder (7), and the second output pipe (10) is arranged at one side of the closed end of the second kettle cylinder (7) and is in fluid communication with the inner cavity of the second kettle cylinder (7).

2. The multi-temperature-level heat medium electric heating furnace according to claim 1, characterized in that: A first temperature sensor (12) is arranged in the first output pipe (4), and a second temperature sensor (13) is arranged in the second output pipe (10), the first temperature sensor (12), the second temperature sensor (13), the first electric heating pipe (2) and the second electric heating pipe (8) are electrically connected with an electric controller of the multi-temperature level heat medium electric heating furnace.

3. The multi-temperature-level heat medium electric heating furnace according to claim 2, characterized in that: The electric controller of the multi-temperature level heat medium electric heating furnace is a digital controller, an embedded industrial controller, an industrial computer or a PLC programmable controller.

4. The multi-temperature-level heat medium electric heating furnace according to claim 1 or 2 or 3, characterized in that: The heat medium (6) is heat conducting oil, and the second kettle cylinder (7) is fixedly installed above the closed end of the first kettle cylinder (1) through at least two supporting seats (14).

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