High-temperature gas electric heating device

Abstract

The utility model discloses a high-temperature gas electric heating device which comprises heating equipment, a shell part is of a tubular structure, electric heating parts are perpendicular to the shell part and are arranged in the shell part, and the electric heating parts are sequentially provided with a plurality of sets in the direction from a gas inlet connector to a gas outlet connector and are divided into medium-temperature sections and high-temperature sections. The heating part comprises a plurality of heating core parts arranged in a matrix shape, the heating core parts are sleeved with heat dissipation fins, flap fins capable of being rotationally adjusted are arranged on the side portions of the heat dissipation fins, a driving compartment is arranged in the shell part, and a control mechanism for adjusting the angles of the flap fins is arranged in the driving compartment. The electric heating device is provided with an adjustable fin structure, the fins can be used for guiding flow of gas flowing through the interior, vortex is conveniently generated, and the heat exchange effect is enhanced. The inclination angle of the fins and the electric heating element is changed through the movable mechanism, the size and position of eddy current can be changed, heat exchange is enhanced, the situation of local overheating is reduced, the service life of the electric heating element is prolonged, and the overall stability of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a high-temperature gas electric heating device. Background Art

[0002] Electric heaters are devices that convert electrical energy into thermal energy and are widely used in various industrial scenarios. They are small in size and high in power. Their working principle is based on energy conversion, and they mainly use resistance or induction to achieve heating. Electric heaters have many unique advantages, such as fast response, high temperature control accuracy, and easy operation. They are widely used in industry and can provide a stable and controllable heating environment.

[0003] Existing electric heaters have problems with low power and limited application scenarios. Electric heaters above 10MW have technical bottlenecks in system integration, system control, and assembly: the temperature of common industrial heaters is lower than 600 degrees Celsius, and the use scenarios above 800 degrees Celsius are limited. In view of the above, it is necessary to propose a high-temperature gas electric heating device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the above technical problems and provide a high-temperature gas electric heating device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-temperature gas electric heating device, including a heating device, the heating device including a shell part and an electric heating part, the shell part is a tubular structure, one end of which is provided with an air inlet interface, and the other end is provided with an air outlet interface, the electric heating part is vertically placed in the shell part, and the electric heating part is provided with multiple groups in sequence from the air inlet interface to the air outlet interface and is divided into a medium temperature section and a high temperature section,

[0006] The electric heating part includes a plurality of heating cores arranged in a matrix shape, the heating cores are provided with heat dissipation fins, the sides of the heat dissipation fins are provided with rotatable and adjustable flap fins, a driving compartment is provided in the shell part, and a control mechanism for adjusting the angle of the flap fins is provided in the driving compartment.

[0007] Furthermore, a partition plate is provided in the upper inner part of the shell part, and a driving compartment is formed on the upper side of the partition plate. A driving shaft is rotatably provided in the driving compartment, and one end of the driving shaft extends out of the shell part and is provided with a driving motor. A rotating shaft is rotatably connected to the partition plate, and multiple rotating shafts are provided along the length direction of the driving shaft, and the rotating shaft is arranged perpendicular to the driving shaft, and the driving shaft and the rotating shaft are meshed and connected by a bevel gear set.

[0008] Furthermore, a plurality of heat dissipation fins are evenly spaced apart on the heating core, and a flap fin is hingedly provided on one side where the airflow of each heat dissipation fin leaves.

[0009] Furthermore, the flap fins are connected to the heat dissipation fins via a hinge shaft, a worm wheel is provided at the end of the hinge shaft, a worm screw meshing with the worm wheel is provided on the rotating shaft, and the rotation of the rotating shaft controls the rotation of the hinge shaft via the worm wheel and the worm screw.

[0010] Furthermore, the heat dissipation fins are evenly provided with through holes corresponding to the heating core, and the surface of the heat dissipation fins is provided with a serrated surface for enhancing the gas turbulence effect.

[0011] Furthermore, the medium temperature section adopts a sleeve-type electric heating element, and the high temperature section adopts an electric heating tube.

[0012] Furthermore, the electric heating part is placed in a shell body with an explosion-proof junction box, and the explosion-proof junction box is provided with connection terminals for connecting cables.

[0013] Furthermore, it also includes a fan, an air duct, a heat-using device, a cooling water pump, and a control cabinet. The fan is connected to the air inlet interface of the heating device through the air duct, and the air outlet structure is connected to the heat-using device through the air duct. An inlet valve and an outlet valve are respectively provided at the front and rear of the heating device. The inlet valve is a regulating valve. A temperature sensor is provided on the heating device, and a pressure sensor is provided at the outlet valve. The fan, regulating valve, temperature sensor, pressure sensor, and cooling water pump are all electrically connected to the control cabinet, and the cooling water pump is connected to the cooling jacket of the shell.

[0014] Furthermore, a heat insulating layer is provided on the surface of the shell portion, and a cooling jacket is provided on the outside of the heat insulating layer for heat preservation.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a high-temperature gas electric heating device with an adjustable fin structure, which can use the fins to guide the gas flowing through the inside, so as to generate eddies and enhance the heat exchange effect. By changing the inclination angle between the fins and the electric heating element through the movable mechanism, the size and position of the eddies can be changed, the heat exchange can be enhanced, the local overheating can be reduced, the service life of the electric heating element can be extended, and the overall stability of the system can be increased; the performance is improved, and the heating flow channel is extended through the fins, so as to provide better heat exchange for generating higher parameters and stable high-temperature air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an internal structure diagram of a high-temperature gas electric heating device of the utility model;

[0017] Figure 2 This is a schematic diagram of the process of a high-temperature gas electric heating device of the utility model;

[0018] Figure 3 This is an internal top view of the heating device of the utility model;

[0019] Figure 4 A top view of the fin structure of the heating core;

[0020] Figure 5 Schematic diagram of the driving structure of the flap fin;

[0021] Figure 6 This is a schematic diagram of the temperature distribution inside a common heating device;

[0022] Figure 7 This is a schematic diagram of the internal temperature distribution of the heating device of the utility model;

[0023] In the figure: 1. heating equipment; 2. shell; 3. electric heating part; 4. air inlet interface; 5. air outlet interface; 6. heating core; 7. heat dissipation fins; 8. flap fins; 9. driving compartment; 10. partition plate; 11. driving shaft; 12. driving motor; 13. rotating shaft; 14. bevel gear set; 15. hinge shaft; 16. worm gear; 17. worm; 18. through hole; 19. serrated surface; 20. explosion-proof junction box; 21. terminal; 22. cable; 23. fan; 24. air duct; 25. heat-using equipment; 26. cooling water pump; 27. control cabinet; 28. regulating valve; 29. ​​outlet valve; 30. temperature sensor; 31. pressure sensor; 32. thermal insulation layer; 33. cooling jacket. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] A high-temperature gas electric heating device comprises a heating device 1, wherein the heating device 1 comprises a housing portion 2 and an electric heating portion 3. Figure 1 As shown, the surface of the shell 2 is provided with a heat insulating layer 32, and the outer heat insulation of the heat insulating layer 32 is provided with a cooling jacket 33. The heat insulating layer 32 can thermally isolate the inside and outside of the shell 2. In order to prevent the surface of the heating device from overheating and scalding the operator, the cooling jacket 33 is provided so that the surface of the heating device 1 can be directly contacted, and the water passing through the cooling jacket 33 can be reused for heat energy.

[0026] The housing 2 is a tubular structure with an air inlet interface 4 at one end and an air outlet interface 5 at the other end. The gas to be heated is fed in through the air inlet interface 4 and is fed out through the air outlet interface 5. Ordinary gas directly passes through the electric heating device in a laminar flow. Figure 6 As shown, the heat distribution is concentrated in the central part of the heating device 1, which easily leads to local overheating, seriously affecting the service life of the electric heating element and weakening the system stability.

[0027] In this embodiment, specifically, Figure 1 As shown, the electric heating part 3 is placed vertically into the shell part 2, and the electric heating part 3 is provided with multiple groups in sequence from the air inlet interface 4 to the air outlet interface 5 and is divided into a medium temperature section and a high temperature section. In order to facilitate rapid heating of the gas medium, high power, and more stable and uniform output temperature, the medium temperature section and the high temperature section are arranged in sequence, and correspondingly, a sleeve-type electric heating element is used in the medium temperature section, and an electric heating tube is used in the high temperature section. Each electric heating part 3 is set to gradually increase the temperature according to the heating temperature, and each group of electric heating parts 3 can independently control the power, and the power gradually increases from front to back according to the temperature rise. The arrangement of electric heating elements and electric heating tubes is formed, and the heater adopts a combination of various types of electric heating elements. Each section adopts a combination of high power and heat dissipation fins 7, and adopts a combination of high-efficiency electric heating elements and flow channel design (control of flap fins 8) to enhance the heat exchange process and make the temperature distribution more reasonable; each electric heating part 3 is connected with one or more groups of heating elements, and each group can be individually regulated in power;

[0028] Furthermore, the electric heating part 3 includes a plurality of heating cores 6 arranged in a matrix, such as Figure 3 As shown, the distribution density of the heating core 6 in each group of electric heating parts 3 is set according to the heating temperature requirement; the electric heating part 3 is placed in the shell part 2 and is provided with an explosion-proof junction box 20, and the explosion-proof junction box 20 is provided with a connection terminal 21 for connecting the cable 22.

[0029] like Figure 1 , 4 As shown in Figure 5, the heating core 6 of each group of electric heating parts 3 is provided with a heat dissipation fin 7, and the side of the heat dissipation fin 7 is provided with a rotatable and adjustable flap fin 8, and the housing 2 is provided with a drive compartment 9, and the drive compartment 9 is provided with a control mechanism for adjusting the angle of the flap fin 8. Furthermore, the heat dissipation fin 7 is evenly spaced on the heating core 6, and the airflow of each heat dissipation fin 7 is hingedly provided on one side. The new high-efficiency heat exchange fin used can effectively increase the heat transfer coefficient and avoid self-damage caused by overheating, and the composite insulating material itself can prevent short circuit caused by heat deformation of the heating wire; specifically, the heat dissipation fin 7 is evenly provided with through holes 18 corresponding to the heating core 6, and the surface of the heat dissipation fin 7 is provided with a serrated surface 19 to enhance the gas turbulence effect.

[0030] Specifically, Figure 1 , 5As shown, a partition plate 10 is provided at the upper inner part of the shell part 2, and a driving compartment 9 is formed on the upper side of the partition plate 10. A driving shaft 11 is rotatably provided in the driving compartment 9. One end of the driving shaft 11 extends out of the shell part 2 and is provided with a driving motor 12. The output end of the driving motor 12 is connected through a reduction device and drives the driving shaft 11 to rotate. A rotating shaft 13 is rotatably connected on the partition plate 10. A plurality of rotating shafts 13 are provided along the length direction of the driving shaft 11, and the rotating shaft 13 is arranged perpendicular to the driving shaft 11. The driving shaft 11 and the rotating shaft 13 are meshed and connected through a bevel gear set 14. After the driving shaft 11 rotates, each rotating shaft 13 can be driven to rotate at the same time, and the rotation of the rotating shaft 13 can be used to control the rotation angle of each flap fin 8. In this embodiment, the flap fin 8 is used to change the flow direction of the passing airflow, thereby forming a Figure 7 As shown in the heat distribution, it can be seen that adding fins can generate eddies and enhance the heat exchange effect. By changing the inclination angle between the fins and the electric heating element through the movable mechanism, the size and position of the eddies can be changed, the heat exchange can be enhanced, the local overheating can be reduced, the service life of the electric heating element can be extended, and the overall stability of the system can be increased; increasing the heat exchange flow channel and increasing the heat transfer time can increase the convective heat transfer coefficient and increase the heat transfer efficiency; improving the performance, by extending the heating flow channel through the fins, better heat exchange is provided for generating higher parameters and stable high-temperature air.

[0031] Furthermore, the flap fin 8 is connected to the heat dissipation fin 7 via a hinge shaft 15, a worm gear 16 is provided at the end of the hinge shaft 15, a worm 17 meshing with the worm gear 16 is provided on the rotating shaft 13, and the rotating shaft 13 rotates through the worm gear 16 and the worm 17 to control the rotation of the hinge shaft 15. Specifically, Figure 5 As shown, the rotation of the shaft 13 drives the worm 17 to rotate, and the transmission of the worm 17 and the worm wheel 16 has the characteristic of one-way transmission, so each flap fin 8 can be controlled to automatically lock the position, and the use effect is better.

[0032] Further, such as Figure 2As shown, it also includes a fan 23, an air duct 24, a heat-using device 25, a cooling water pump 26, and a control cabinet 27. The fan 23 is connected to the air inlet interface 4 of the heating device 1 through the air duct 24, and the air outlet structure is connected to the heat-using device 25 through the air duct 24. An inlet valve and an outlet valve 29 are respectively provided at the front and rear of the heating device 1. The inlet valve is a regulating valve 28. A temperature sensor 30 is provided on the heating device 1, and a pressure sensor 31 is provided at the outlet valve 29. The fan 23, the regulating valve 28, the temperature sensor 30, the pressure sensor 31, and the cooling water pump 26 are all electrically connected to the control cabinet 27, and the cooling water pump 26 is connected to the cooling jacket 33 of the shell part 2. The system consists of a heating device 1 body, a fan 23, a control system, etc. The heating device 1 transmits data signals such as temperature, pressure, and flow between the front and rear air duct 24 interfaces, which are regulated by the control system. When in use, the frequency of the front-end fan 23 is controlled, and the damper opening at the air inlet interface 4 is controlled by the regulating valve 28, thereby controlling the air flow rate. The output temperature of the heating wire can be controlled by the control cabinet 27, and the process can be controlled. The temperature can be controlled by the software of the control cabinet 27 to achieve a more uniform and stable state.

[0033] Application scenarios:

[0034] (1) Electrification of high-power electric heaters for medium and low temperature heat sources below 1000 degrees in petrochemical and other industrial fields; (2) Used in conjunction with large-scale energy storage and heat storage application scenarios; (3) As a large-scale and integrated skid-mounted module for industrial users.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-temperature gas electric heating device, comprising a heating device (1), characterized in that: The heating device (1) comprises a shell part (2) and an electric heating part (3); the shell part (2) is a tubular structure, one end of which is provided with an air inlet interface (4) and the other end of which is provided with an air outlet interface (5); the electric heating part (3) is vertically placed in the shell part (2); the electric heating part (3) is provided with a plurality of groups in sequence from the air inlet interface (4) to the air outlet interface (5) and is divided into a medium temperature section and a high temperature section; The electric heating portion (3) comprises a plurality of heating cores (6) arranged in a matrix shape, the heating cores (6) being provided with heat dissipation fins (7), the sides of the heat dissipation fins (7) being provided with rotatably adjustable flap fins (8), the housing portion (2) being provided with a drive compartment (9), and the drive compartment (9) being provided with a control mechanism for adjusting the angle of the flap fins (8).

2. A high temperature gas electric heating device according to claim 1, characterized in that: A partition plate (10) is provided at the upper part of the shell (2), and a driving compartment (9) is formed on the upper side of the partition plate (10). A driving shaft (11) is rotatably provided in the driving compartment (9), and one end of the driving shaft (11) extends out of the shell (2) and is provided with a driving motor (12). A rotating shaft (13) is rotatably connected to the partition plate (10), and a plurality of rotating shafts (13) are provided along the length direction of the driving shaft (11), and the rotating shaft (13) is arranged perpendicular to the driving shaft (11). The driving shaft (11) and the rotating shaft (13) are meshedly connected via a bevel gear set (14).

3. A high temperature gas electric heating device according to claim 2, characterized in that: A plurality of heat dissipation fins (7) are evenly spaced apart on the heating core (6), and a flap fin (8) is hingedly provided on one side where the airflow of each heat dissipation fin (7) leaves.

4. A high temperature gas electric heating device according to claim 3, characterized in that: The flap fins (8) are connected to the heat dissipation fins (7) via a hinge shaft (15); a worm gear (16) is provided at the end of the hinge shaft (15); a worm (17) meshing with the worm gear (16) is provided on the rotating shaft (13); the rotating shaft (13) rotates to control the rotation of the hinge shaft (15) via the worm gear (16) and the worm gear (17).

5. A high temperature gas electric heating device according to claim 1, characterized in that: The heat dissipation fins (7) are evenly provided with through holes (18) corresponding to the heating core (6), and the surface of the heat dissipation fins (7) is provided with a serrated surface (19) for enhancing the gas turbulence effect.

6. A high temperature gas electric heating device according to claim 1, characterized in that: The medium temperature section adopts a sleeve-type electric heating element, and the high temperature section adopts an electric heating tube.

7. A high temperature gas electric heating device according to claim 1, characterized in that: The electric heating part (3) is retained in the housing part (2) and is provided with an explosion-proof junction box (20), wherein a connection terminal (21) for connecting a cable (22) is provided in the explosion-proof junction box (20).

8. A high temperature gas electric heating device according to claim 1, characterized in that: The heating device (1) further comprises a fan (23), an air duct (24), a heat-using device (25), a cooling water pump (26), and a control cabinet (27); the fan (23) is connected to an air inlet interface (4) of the heating device (1) via the air duct (24); an air outlet structure is connected to the heat-using device (25) via the air duct (24); an inlet valve and an outlet valve (29) are respectively provided at the front and rear of the heating device (1); the inlet valve is a regulating valve (28); a temperature sensor (30) is provided on the heating device (1); a pressure sensor (31) is provided at the outlet valve (29); the fan (23), the regulating valve (28), the temperature sensor (30), the pressure sensor (31), and the cooling water pump (26) are all electrically connected to the control cabinet (27); and the cooling water pump (26) is connected to a cooling jacket (33) of the shell (2).

9. A high temperature gas electric heating device according to claim 8, characterized in that: A heat insulating layer (32) is provided on the surface of the shell portion (2), and a cooling jacket (33) is provided outside the heat insulating layer (32) for heat preservation.

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