Heat insulation structure of electric heating heat carrier furnace tube plate flange
By setting up a multi-layer thermal insulation structure at the flange of the tube plate of the electric heating heat carrier furnace, the problems of excessive temperature of the wiring chamber and thermal energy loss are solved, and safe operation and energy-saving effects are achieved.
Patent Information
- Application Number
- CN202422558271.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The tube plate flanges of existing electric heating heat carrier furnaces can easily lead to excessive temperature of the wiring chamber at high temperatures, which poses safety hazards, and severe heat loss.
The insulation structure is composed of heat insulation plates and metal guard plates made of thermal insulation materials. The insulation plates are fitted with the tube plate flange. The outer insulation layer of the metal guard plate is provided on the outside to form a multi-layer insulation layer to prevent heat radiation and heat energy loss.
Effectively reduce the temperature of the wiring chamber, ensure the safe operation of the electric heating heat carrier furnace, while reducing thermal energy loss and improving thermal insulation performance.
Smart Images
Figure CN223283243U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electric heating heat carrier furnace, in particular to a heat insulation structure of a tube plate flange of an electric heating heat carrier furnace, and belongs to the technical field of electric heating heat carrier heating furnaces. Background Art
[0002] Electric-heated heat carrier furnaces, which include electric-heated organic heat carrier furnaces and electric-heated molten salt furnaces, are specialized industrial boilers. They utilize a heat carrier as the heat medium. The heating tube sections of the electric heating tubes are immersed in the heat carrier within the boiler drum. Power is applied to the electric heating tubes to directly heat the heat carrier. A heat carrier circulation pump forces the liquid phase to circulate, delivering the heat energy to heat-consuming devices or equipment before returning it for reheating and recirculation. This new type of environmentally friendly, energy-saving, low-pressure (at atmospheric pressure or lower), safe, and direct-flow special industrial boiler provides high-temperature heat. In recent years, with China's emphasis on environmental protection and its strong promotion of clean energy and zero-carbon emissions, electric-heated heat carrier furnaces have gained widespread application in numerous industries, including petroleum, chemical, chemical fiber, building materials, light industry, textiles, printing and dyeing, and food.
[0003] During operation, the heat carrier temperature in an electrically heated heat transfer furnace can reach a maximum of approximately 500°C. The outer surface of the furnace's tube sheet flange also approaches the temperature of the heat carrier. The tube sheet flange is densely packed with electric heating tubes, one end of which is connected to the power supply via a wiring chamber and cables. To prevent the temperature inside the wiring chamber from being affected by heat radiation from the tube sheet flange, the non-heating section of the heating tubes is typically extended during manufacturing, moving the wiring chamber as far away from the furnace's tube sheet flange as possible to prevent the wiring terminals from heating and burning. However, despite these measures, the temperature inside the wiring chamber remains excessively high after prolonged use due to heat radiation from the furnace's tube sheet flange, compromising the safe operation of the furnace. This can even lead to safety incidents such as terminal terminals burning out and the furnace shutting down. Furthermore, due to the large area of the tube sheet flange, especially in high-power furnaces, the large number of heating tubes increases the flange area, resulting in significant heat loss from the heat transfer furnace. Summary of the Invention
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an insulation structure for a tube plate flange of an electric heating heat carrier furnace which can not only ensure the safe operation of the electric heating heat carrier furnace but also prevent the loss of heat energy of the heat carrier and has a simple structure.
[0005] In order to solve the above technical problems, the utility model adopts such an insulation structure of the tube plate flange of an electric heating heat carrier furnace. The electric heating heat carrier furnace includes a drum storing a heat carrier and a plurality of electric heating tubes and a tube plate flange for heating the heat carrier. One end of each electric heating tube is connected to a power supply through a wiring chamber and a cable. One end of the drum is an open end and the other end is a closed end. A drum flange is provided at the open end of the drum. The tube plate flange is detachably connected to the drum flange. A drum outer insulation layer is provided on the outside of the drum. The insulation structure of the tube plate flange of the electric heating heat carrier furnace includes an insulation layer. The heat insulation plate is made of a material and the heat insulation plate metal guard plate is made of a metal material. The heat insulation plate is disc-shaped, the inner surface of the heat insulation plate is fitted with the tube plate flange, the outer circular wall of the heat insulation plate is fitted with the outer insulation layer of the boiler drum, the outer surface of the heat insulation plate is fitted with the heat insulation plate metal guard plate, the other end of each electric heating tube passes through the heat insulation plate metal guard plate, the heat insulation plate, the tube plate flange, and the boiler drum flange to enter the inner cavity of the boiler drum, and a boiler drum outer insulation layer metal guard plate made of a metal material is provided on the outside of the boiler drum outer insulation layer, and the heat insulation plate metal guard plate is fixedly connected to the boiler drum outer insulation layer metal guard plate.
[0006] As a preferred embodiment of the present invention, the insulation board is made of aluminum silicate fiber or ceramic fiber, the insulation board metal guard plate and the drum outer insulation layer metal guard plate are made of aluminum or stainless steel, the thickness of the insulation board is between 130 and 150 mm, the thickness of the insulation board metal guard plate and the drum outer insulation layer metal guard plate is between 0.5 and 1.5 mm, a plurality of first through holes for the electric heating pipes to pass through are provided on the insulation board, and a plurality of second through holes for the electric heating pipes to pass through are provided on the insulation board metal guard plate, and the positions of the first through holes and the second through holes correspond to each other.
[0007] As a preferred embodiment of the present invention, the tube sheet flange and the drum flange are detachably connected by bolts, and the insulation plate metal guard plate and the drum outer insulation layer metal guard plate are fixedly connected by riveting or welding.
[0008] After adopting the above structure, the utility model has the following beneficial effects:
[0009] The utility model is provided with an insulation plate made of insulation material and a metal shield for the insulation plate made of metal material. The inner surface of the insulation plate is fitted with the tube sheet flange, the outer circular wall of the insulation plate is fitted with the outer insulation layer of the drum, the outer surface of the insulation plate is fitted with the metal shield for the insulation plate, and a metal shield for the outer insulation layer of the drum is provided on the outer side of the outer insulation layer of the drum. The metal shield for the insulation plate is fixedly connected to the metal shield for the outer insulation layer of the drum. This structure effectively prevents the heat radiation from the tube sheet flange of the electric heating heat carrier furnace to the wiring chamber, so that the temperature in the wiring chamber is not affected by the heat radiation from the tube sheet flange, ensuring the safe operation of the electric heating heat carrier furnace, and at the same time effectively preventing the loss of heat energy of the heat carrier.
[0010] The utility model enables the electric heating heat carrier furnace to have better heat insulation performance, prevents heat energy loss, and has a simple structure and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.
[0012] Figure 1 The utility model is a structural schematic diagram of the thermal insulation structure of the electric heating heat carrier furnace tube plate flange.
[0013] Figure 2 This is a structural schematic diagram of the heat insulation board in the utility model.
[0014] Figure 3 for Figure 2 Schematic side view of the heat shield shown. DETAILED DESCRIPTION
[0015] See also Figures 1 to 3The figure shows an insulation structure of a tube sheet flange of an electric heating heat carrier furnace. The electric heating heat carrier furnace includes a boiler drum 1 storing a heat carrier 10 and a plurality of electric heating tubes 2 and a tube sheet flange 3 for heating the heat carrier 10. The electric heating tubes 2 are preferably U-shaped tubes. The heat carrier 10 flows in the inner cavity of the boiler drum 1. One end of each electric heating tube 2 is connected to a power supply through a wiring chamber 4 and a cable. The cable and power supply are not shown in the figure. One end of the boiler drum 1 is an open end and the other end is a closed end. The closed end is not shown in the figure. A boiler drum flange 5 is fixedly provided at the open end of the boiler drum 1. The tube sheet flange 3 is detachably connected to the boiler drum flange 5. A boiler drum outer insulation layer 6 is provided on the outside of the boiler drum 1. The boiler drum outer insulation layer 6 can be made of various insulation materials such as aluminum silicate fiber or ceramic fiber. The thermal insulation structure of the tube plate flange of the electric heating heat carrier furnace includes an insulation plate 7 made of insulation material and an insulation plate metal guard plate 8 made of metal material. The insulation plate 7 is disc-shaped, and the inner surface of the insulation plate 7 is in abutment with the tube plate flange 3, that is, tightly fitted. The outer circular wall surface of the insulation plate 7 is in abutment with the boiler outer insulation layer 6, that is, tightly fitted. The outer surface of the insulation plate 7 is in abutment with the insulation plate metal guard plate 8, that is, tightly fitted. The other end of each electric heating tube 2 passes through the insulation plate metal guard plate 8, the insulation plate 7, the tube plate flange 3, and the boiler drum flange 5 to enter the inner cavity of the boiler drum 1. A boiler drum outer insulation layer metal guard plate 9 made of metal material is provided on the outside of the boiler drum outer insulation layer 6. The insulation plate metal guard plate 8 is fixedly connected to the boiler drum outer insulation layer metal guard plate 9.
[0016] As a preferred embodiment of the present invention, the heat insulation board 7 is preferably made of aluminum silicate fiber or ceramic fiber, and of course it can also be made of other heat insulation materials with heat insulation effect. The heat insulation board metal guard plate 8 and the drum outer heat insulation layer metal guard plate 9 are made of aluminum or stainless steel, or can be metal plates such as galvanized plate and color steel plate. Of course, they can also be made of other metal materials. The thickness of the heat insulation board 7 is between 130 and 150 mm, preferably 140 mm. The heat insulation board metal guard plate 8 is preferably a disc-shaped metal plate, the diameter of which can be larger than the diameter of the heat insulation board 7, or the diameters of the two can be equal. The thickness of the heat insulation board metal guard plate 8 and the drum outer heat insulation layer metal guard plate 9 is between 0.5 and 1.5 mm, preferably 1 mm. A plurality of first through holes 7a for the electric heating pipe 2 to pass through are provided on the heat insulation board metal guard plate 8, and a plurality of second through holes 8a for the electric heating pipe 2 to pass through are provided on the heat insulation board metal guard plate 8. The first through holes 7a and the second through holes 8a are positioned correspondingly, such as Figure 1 shown.
[0017] As a preferred embodiment of the present invention, the tube sheet flange 3 and the drum flange 5 are detachably connected by bolts, and the insulation plate metal guard plate 8 and the drum outer insulation layer metal guard plate 9 are fixedly connected by riveting or welding.
[0018] After trial, the utility model effectively prevents the heat radiation of the tube sheet flange of the electric heating heat carrier furnace to the wiring chamber, so that the temperature in the wiring chamber is not affected by the heat radiation of the tube sheet flange, ensuring the safe operation of the electric heating heat carrier furnace, and at the same time preventing heat energy loss, achieving good practical effects.
Claims
1. A heat insulation structure for a tube sheet flange of an electric heating heat carrier furnace, the electric heating heat carrier furnace comprising a drum (1) storing a heat carrier (10) and a plurality of electric heating tubes (2) for heating the heat carrier (10) and a tube sheet flange (3), one end of each electric heating tube (2) being connected to a power source via a wiring chamber (4) and a cable, one end of the drum (1) being an open end and the other end being a closed end, a drum flange (5) being provided at the open end of the drum (1), the tube sheet flange (3) being detachably connected to the drum flange (5), and a drum outer heat insulation layer (6) being provided on the outside of the drum (1), characterized in that: The heat insulation structure of the tube plate flange of the electric heating heat carrier furnace comprises a heat insulation plate (7) made of a heat insulation material and a heat insulation plate metal guard plate (8) made of a metal material, wherein the heat insulation plate (7) is in a disc shape, the inner surface of the heat insulation plate (7) is fitted with the tube plate flange (3), the outer circular wall surface of the heat insulation plate (7) is fitted with the outer heat insulation layer (6) of the drum, and the outer surface of the heat insulation plate (7) is fitted with the heat insulation plate metal guard plate (8). The other end of each electric heating tube (2) passes through the heat insulation plate metal guard plate (8), the heat insulation plate (7), the tube plate flange (3), and the drum flange (5) to enter the inner cavity of the drum (1), and a drum outer heat insulation layer metal guard plate (9) made of a metal material is provided on the outer side of the drum outer heat insulation layer (6), and the heat insulation plate metal guard plate (8) is fixedly connected to the drum outer heat insulation layer metal guard plate (9).
2. The heat insulation structure of the tube plate flange of the electric heating heat carrier furnace according to claim 1 is characterized in that: The heat insulation board (7) is made of aluminum silicate fiber or ceramic fiber, the heat insulation board metal guard plate (8) and the drum outer heat insulation layer metal guard plate (9) are made of aluminum or stainless steel, the thickness of the heat insulation board (7) is between 130 and 150 mm, the thickness of the heat insulation board metal guard plate (8) and the drum outer heat insulation layer metal guard plate (9) is between 0.5 and 1.5 mm, a plurality of first through holes (7a) for the electric heating tube (2) to pass through are provided on the heat insulation board (7), and a plurality of second through holes (8a) for the electric heating tube (2) to pass through are provided on the heat insulation board metal guard plate (8), and the positions of the first through holes (7a) and the second through holes (8a) correspond to each other.
3. The thermal insulation structure of the tube plate flange of the electric heating heat carrier furnace according to claim 1 or 2, characterized in that: The tube sheet flange (3) and the drum flange (5) are detachably connected by bolts, and the heat insulation plate metal guard plate (8) and the drum outer heat insulation layer metal guard plate (9) are fixedly connected by riveting or welding.