Intelligent temperature control explosion-proof heater

Abstract

This utility model discloses an explosion-proof heater with intelligent temperature control, including an explosion-proof junction box, a heating shell, and a heating tube. A cooling sleeve is installed on the outer side of the heating shell, and a heat dissipation duct is provided between the cooling sleeve and the heating shell. An air outlet pipe and an air inlet pipe are installed on the cooling sleeve. A surface temperature sensor is installed on the outer wall of the heating shell, and an internal temperature sensor is also installed on the heating shell, with its probe inserted into the interior of the heating shell. The explosion-proof heater provided by this utility model achieves intelligent protection and temperature control through dual temperature monitoring. When the surface temperature sensor detects that the heating shell is overheated, the fan immediately starts for air cooling; simultaneously, the internal temperature sensor monitors the medium temperature in real time and feeds the data back to the control system. The control system intelligently adjusts the heating tube power according to the temperature difference to achieve precise temperature control. This design effectively avoids long-term overheating of the heating tube and thermal fatigue of the heating shell, significantly reducing the failure rate and extending the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to an explosion-proof heater with intelligent temperature control. Background Technology

[0002] Explosion-proof heaters are critical industrial devices widely used in flammable and explosive hazardous environments such as petroleum, chemical, and pharmaceutical industries. Their core function is to safely and controllably heat the medium in pipes or containers using internal electric heating elements. To ensure safety, their structure typically employs a robust metal casing and tightly seals the heating element, thus isolating it from contact with the external explosive environment and preventing explosions caused by electric sparks or high-temperature surfaces.

[0003] However, under conditions such as prolonged high-load operation, sudden reduction or interruption of internal medium flow, and abnormal power of heating elements, the surface temperature of the metal shell of the explosion-proof heater may rise sharply, posing a safety hazard. Utility Model Content

[0004] The main objective of this invention is to provide an explosion-proof heater with intelligent temperature control to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution: An explosion-proof heater with intelligent temperature control includes an explosion-proof junction box, a heating housing, and a heating tube. An air-cooling sleeve is provided on the outside of the heating housing, and a heat dissipation duct is provided between the air-cooling sleeve and the heating housing. An air outlet pipe and an air inlet pipe are provided on the air-cooling sleeve. A surface temperature sensor is provided on the outer wall of the heating housing, and an internal temperature sensor is provided on the heating housing. The detection end of the internal temperature sensor is inserted into the interior of the heating housing.

[0006] Preferably, the air-cooled housing is provided with a slot, and the surface temperature sensor passes through the slot and is fixed to the outer wall of the heating housing.

[0007] Preferably, a surface temperature sensor flange tube is provided above the slot, and a flange cover plate is provided on the surface temperature sensor flange tube, with the head of the surface temperature sensor extending out of the flange cover plate.

[0008] Preferably, the heating housing is provided with an internal temperature sensor flange tube that passes through the air-cooled housing.

[0009] Preferably, the surface temperature sensor is located above the center of the heating housing, and the internal temperature sensor is located on the side near the outlet pipe of the heating housing.

[0010] Preferably, the heat dissipation duct is provided with multiple air guide plates at intervals.

[0011] Preferably, the plurality of air guide plates are spirally distributed in the heat dissipation air duct, and an air outlet is provided between two adjacent air guide plates.

[0012] Preferably, the two ends of the air guide plate are fixedly connected to the outer wall of the heating shell and the inner wall of the air-cooling shell, respectively.

[0013] The beneficial technical effects of this utility model are as follows: The explosion-proof heater provided by this invention achieves intelligent protection and temperature control through dual temperature monitoring. When the surface temperature sensor detects that the heating shell is overheated, the fan immediately starts for air cooling; simultaneously, the internal temperature sensor monitors the medium temperature in real time and feeds the data back to the control system. The control system intelligently adjusts the heating element power according to the temperature difference to achieve precise temperature control. This design effectively avoids long-term overheating of the heating element and thermal fatigue of the heating shell, significantly reducing the failure rate and extending the service life of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the explosion-proof heater structure according to an embodiment of the present invention; Figure 2 This is a side view of an explosion-proof heater according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of an explosion-proof heater according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an explosion-proof heater (airless cooling housing) according to an embodiment of the present invention; Figure 5 This is a schematic diagram showing the location of the air vent in an embodiment of this utility model; Figure 6 This is a schematic diagram of the air-cooled housing structure of an embodiment of the present invention.

[0015] In the diagram: 1. Explosion-proof junction box; 2. Heating housing; 3. Heating tube; 4. Air-cooled housing; 5. Heat dissipation duct; 6. Air outlet duct; 7. Air inlet duct; 8. Surface temperature sensor; 9. Internal temperature sensor; 10. Groove; 11. Surface temperature sensor flange; 12. Flange cover; 13. Internal temperature sensor flange; 14. Air guide plate; 15. Air outlet. Detailed Implementation

[0016] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0017] like Figures 1-6As shown, the intelligent temperature-controlled explosion-proof heater provided in this embodiment includes an explosion-proof junction box 1, a heating housing 2, and a heating tube 3. A cooling sleeve 4 is provided on the outside of the heating housing 2. A heat dissipation duct 5 is provided between the cooling sleeve 4 and the heating housing 2. An air outlet pipe 6 and an air inlet pipe 7 are provided on the cooling sleeve 4. A surface temperature sensor 8 is provided on the outer wall of the heating housing 2. An internal temperature sensor 9 is provided on the heating housing 2. The detection end of the internal temperature sensor 9 is inserted into the interior of the heating housing 2.

[0018] In use, the air inlet pipe 7 is connected to the fan, and the fan, surface temperature sensor 8 and internal temperature sensor 9 are all connected to the control system. When the surface temperature sensor 8 detects that the surface temperature of the heating shell 2 is too high, it transmits the signal to the control system, and the control system starts the fan to cool the surface of the heating shell 2.

[0019] The internal temperature sensor 9 monitors the temperature of the heating medium in real time and feeds the data back to the control system. The control system intelligently adjusts the power of the heating element 3 based on the temperature difference from the set temperature.

[0020] In this embodiment, as Figure 6 As shown, the air-cooled housing 4 is provided with a slot 10, through which the surface temperature sensor 8 passes and is fixed on the outer wall of the heating housing 2, providing a convenient installation channel for the surface temperature sensor 8.

[0021] In this embodiment, as Figure 3 As shown, a surface temperature sensor flange tube 11 is provided above the slot 10, and a flange cover plate 12 is provided on the surface temperature sensor flange tube 11. The head of the surface temperature sensor 8 extends out of the flange cover plate 12 to prevent air from escaping from the slot 10 during air cooling, thus affecting the air cooling effect.

[0022] In this embodiment, as Figure 1 As shown, the heating housing 2 is provided with an internal temperature sensor flange tube 13 that passes through the air-cooled housing 4, which facilitates the installation of the internal temperature sensor 9.

[0023] In this embodiment, as Figure 1 As shown, the surface temperature sensor 8 is located above the center of the heating housing 2. The upper position is usually the highest temperature point of the housing, which can most sensitively detect the overall temperature rise and trigger protection in time. The internal temperature sensor 9 is located on the side of the outlet pipe near the heating housing 2. The outlet temperature is a key indicator for measuring the heating effect. Temperature measurement here can most directly reflect the heating output status and facilitate precise power adjustment.

[0024] In this embodiment, as Figure 4 and Figure 5As shown, multiple air guide plates 14 are arranged at intervals in the heat dissipation duct 5. The multiple air guide plates 14 are spirally distributed in the heat dissipation duct 5. An air outlet 15 is provided between two adjacent air guide plates 14. The spiral structure forces the airflow to spiral forward along the shell, which greatly increases the heat exchange time and distance and improves the heat dissipation efficiency. The airflow can reach various positions in the heat dissipation duct 5 through the air outlet 15 and take away the heat from the surface of the heated shell 2.

[0025] In this embodiment, as Figure 3 As shown, the two ends of the air guide plate 14 are fixedly connected to the outer wall of the heating shell 2 and the inner wall of the air-cooled shell 4, respectively, which serves as a reinforcing rib and enhances the structural strength between the heating shell 2 and the air-cooled shell 4.

[0026] In summary, the explosion-proof heater provided in this embodiment achieves intelligent protection and temperature control through dual temperature monitoring. When the surface temperature sensor 8 detects that the heating shell 2 is overheated, the fan immediately starts for air cooling; simultaneously, the internal temperature sensor 9 monitors the medium temperature in real time and feeds the data back to the control system. The control system intelligently adjusts the power of the heating tube 3 according to the temperature difference to achieve precise temperature control. This design effectively avoids long-term overheating of the heating tube 3 and thermal fatigue of the heating shell 2, significantly reducing the failure rate and extending the service life of the equipment.

[0027] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. An explosion-proof heater with intelligent temperature control, comprising an explosion-proof junction box (1), a heating housing (2), and a heating tube (3), characterized in that: The heating housing (2) is provided with a cooling sleeve (4) on the outside. A heat dissipation duct (5) is provided between the cooling sleeve (4) and the heating housing (2). An air outlet pipe (6) and an air inlet pipe (7) are provided on the cooling sleeve (4). A surface temperature sensor (8) is provided on the outer wall of the heating housing (2). An internal temperature sensor (9) is provided on the heating housing (2). The detection end of the internal temperature sensor (9) is inserted into the interior of the heating housing (2).

2. The explosion-proof heater with intelligent temperature control according to claim 1, characterized in that: The air-cooled housing (4) is provided with a slot (10), and the surface temperature sensor (8) passes through the slot (10) and is fixed on the outer wall of the heating housing (2).

3. The explosion-proof heater with intelligent temperature control according to claim 2, characterized in that: A surface temperature sensor flange tube (11) is provided above the slot (10), and a flange cover plate (12) is provided on the surface temperature sensor flange tube (11). The head of the surface temperature sensor (8) extends out of the flange cover plate (12).

4. The explosion-proof heater with intelligent temperature control according to claim 1, characterized in that: The heating housing (2) is provided with an internal temperature sensor flange tube (13) that passes through the air-cooled housing (4).

5. The explosion-proof heater with intelligent temperature control according to claim 1, characterized in that: The surface temperature sensor (8) is located above the center of the heating housing (2), and the internal temperature sensor (9) is located on one side of the outlet pipe near the heating housing (2).

6. The explosion-proof heater with intelligent temperature control according to claim 1, characterized in that: Multiple air guide plates (14) are spaced apart inside the heat dissipation duct (5).

7. The explosion-proof heater with intelligent temperature control according to claim 6, characterized in that: Multiple air guide plates (14) are spirally distributed in the heat dissipation air duct (5), and an air outlet (15) is provided between two adjacent air guide plates (14).

8. The explosion-proof heater with intelligent temperature control according to claim 6, characterized in that: The two ends of the air guide plate (14) are fixedly connected to the outer wall of the heating shell (2) and the inner wall of the air-cooled shell (4), respectively.

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