Independent electric heating assembly

Abstract

The invention relates to the technical field of electric heaters, in particular to an independent electric heating assembly. The independent electric heating assembly comprises a power supply box, an outer sleeve, a straight-strip-shaped electric heating core and a wiring terminal, one end of the power supply box is open, a mounting flange is detachably packaged at one end of the power supply box, one end of the outer sleeve is connected with the other end of the power supply box, the interiors of the outer sleeve and the power supply box are communicated, the wiring terminal is arranged in the power supply box, and the straight-strip-shaped electric heating core is arranged in the wiring terminal. The electric heating core is inserted into the outer sleeve and connected with the wiring terminal through a circuit, and a wire inlet cable gland for a power line to penetrate through is arranged on the side wall of the power box. The electric heating module has the advantages of being simple and reasonable in structural design, integrally forming an independent electric heating module, and being convenient to disassemble, assemble and replace after being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of electric heaters, and in particular to an independent electric heating component. Background Art

[0002] High temperature resistance electric heaters are usually composed of multiple electric heating cores, which need to be customized according to power requirements and are non-standard products. And every time one of the electric heating cores is damaged, it is necessary to shut down and replace the damaged electric heating core. The replacement is very complicated and often requires professionals to complete the replacement at high temperatures.

[0003] Based on this, it is necessary to develop an electric heating component that can independently complete rapid replacement to overcome the above technical problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an independent electric heating component, which effectively overcomes the defects of the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] An independent electric heating component comprises a power supply box, an outer sleeve, a straight electric heating core and a terminal block. One end of the power supply box is open and detachably encapsulated with a mounting flange. One end of the outer sleeve is connected to the other end of the power supply box, and the two are internally connected. The terminal block is installed in the power supply box, and the electric heating core is inserted into the outer sleeve and connected to the terminal block through a line. A line gland is provided on the side wall of the power supply box for the power line to pass through.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the power box is a cylindrical box body, and the thermally conductive outer sleeve is vertically connected to the middle of the other end side wall of the power box.

[0009] Furthermore, a fixing flange is provided at one end of the thermally conductive outer sleeve close to the power box, and the fixing flange is parallel to the mounting flange.

[0010] Furthermore, a side plate is provided on the outer side of one end edge of the power box, the side plate fits the mounting flange, and is assembled by bolts passing through the two.

[0011] Furthermore, a sealing ring is sandwiched between the side plate and the mounting flange.

[0012] Furthermore, mounting plates are fixed on the opposite side walls of the power box respectively, and connecting plates are provided at both ends of the wiring terminals respectively. The connecting plates correspond to the mounting plates one by one and are fixed by bolt connection.

[0013] Furthermore, a positioning plate is provided in the power box, and one end of the electric heating core is assembled and connected to the positioning plate.

[0014] Furthermore, the electric heating core comprises a plurality of insulating support blocks, a plurality of groups of resistance wires, a cold end, a tail end and a grounding piece. The plurality of support blocks are arranged in a line and the ends are interlocked with each other. Two resistance wires are provided in each group. Resistance wire channels matching each resistance wire are provided through the plurality of support blocks along the length direction. The resistance wires are respectively installed in the corresponding resistance wire channels. One end of each group of two resistance wires is respectively connected to the cold end and the tail end inserted in the resistance wire channel, and one end of the cold end and the tail end extends out of the support block located at the outermost end, and the cold end and the tail end are respectively connected to the wiring terminals through lines. The other end of each group of two resistance wires is commonly connected to a conductive connector inserted in the support block at the end. A grounding channel is provided through the plurality of support blocks along the length direction. The grounding piece is in the shape of a straight strip and inserted in the grounding channel. One end of the grounding piece extends into the power supply box, and the support blocks are respectively connected to the grounding piece through screws.

[0015] Furthermore, the grounding member is a flat grounding flat iron.

[0016] Furthermore, the power box, thermal outer sleeve and mounting flange are all made of stainless steel.

[0017] The beneficial effects of the present invention are: the structural design is simple and reasonable, and an independent electric heating module is formed as a whole, which is convenient for rapid disassembly and replacement after damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the independent electric heating component of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the power box in the independent electric heating assembly of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the electric heating core in the independent electric heating assembly of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Power box; 2. Thermal outer sleeve; 3. Electric heating core; 4. Wiring terminal; 11. Mounting flange; 12. Cable gland; 13. Mounting plate; 14. Positioning plate; 21. Fixing flange; 31. Support block; 32. Resistance wire; 33. Cold end; 34. Tail end; 35. Grounding piece; 36. Conductive connector; 41. Connecting plate. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] Example

[0025] like Figure 1 , 2 As shown in Figure 3, the independent electric heating component of this embodiment includes a power box 1, a thermally conductive outer sleeve 2, a straight electric heating core 3 and a terminal 4. One end of the power box 1 is open and detachably encapsulated with a mounting flange 11, one end of the thermally conductive outer sleeve 2 is connected to the other end of the power box 1, and the two are internally connected, the terminal 4 is installed in the power box 1, the electric heating core 3 is inserted into the thermally conductive outer sleeve 2, and is connected to the terminal 4 through a line, and an incoming line gland 12 for the power line to pass through is provided on the side wall of the power box 1.

[0026] In the independent electric heating assembly of the present embodiment, the thermally conductive outer sleeve 2 and the power supply box 1 are an integral component, the electric heating core 3 is inserted into the thermally conductive outer sleeve 2, and the power connection part of the electric heating core 3 is connected to the wiring terminal 4 through the line inside the power supply box 1, and then the power line passing through the incoming line gland 12 is connected to the wiring terminal 4 to realize the line conduction and power supply of the electric heating core 3. When the electric heating core 3 fails or is damaged and needs to be replaced, it is only necessary to disassemble the power supply box 1 and the mounting flange 11, disconnect the line connection, and then remove the power supply box 1, the thermally conductive outer sleeve 2 and the electric heating core 3 as a whole, and replace them with new ones. The whole structural design is simple and reasonable, and an independent electric heating module is formed as a whole, which is convenient for quick disassembly and replacement after damage.

[0027] It should be noted that the independent electric heating component can form a heating unit of standard power, and the heating unit can be expanded to a circulating electric heater of several hundred MW power. Specifically, multiple electric heating components of this embodiment can be assembled in parallel on the same mounting flange 11. If one of them is damaged, the power box 1 and the mounting flange 11 can be directly disassembled, the line connection can be disconnected, and the component can be replaced.

[0028] In this embodiment, the power box 1 is a cylindrical box body, and the heat conductive outer sleeve 2 is vertically connected to the middle of the other end side wall of the power box 1. The overall shape is a straight strip, which is convenient to assemble and use.

[0029] In this embodiment, the end of the heat-conducting outer sleeve 2 close to the power box 1 is provided with a fixing flange 21, and the fixing flange 21 is parallel to the mounting flange 11. Taking the independent electric heating assembly of this embodiment and the shell-and-tube heat exchanger as an example, the heat-conducting outer sleeve 2 is inserted into the shell and tube, and then the mounting flange 11 is connected and fastened to the flange at the end of the shell and tube, which is convenient for assembly.

[0030] In this embodiment, a side plate is provided on the outer side of one end edge of the power box 1, and the side plate fits the mounting flange 11 and is assembled by bolts passing through the two. The side plate can effectively fit the mounting flange 11, and then assembled with bolts, so that the two are assembled more tightly, and the disassembly and assembly are also simple and quick.

[0031] In this embodiment, a sealing ring is sandwiched between the side plate and the mounting flange 11 to ensure the sealing of the assembly between the power box 1 and the mounting flange 11.

[0032] In this embodiment, mounting plates 13 are fixed to the side walls on opposite sides of the power box 1, and connecting plates 41 are provided at both ends of the wiring terminal 4. The connecting plates 41 correspond to the mounting plates 13 one by one and are fixed by bolts. The one-to-one assembly of the mounting plates 13 on both sides and the connecting plates 41 on both ends makes the assembly structure of the wiring terminal 4 inside the power box 1 relatively simple and firm, and is also conducive to the arrangement of internal circuits.

[0033] In this embodiment, a positioning plate 14 is provided in the power box 1, and one end of the electric heating core 3 is assembled and connected to the positioning plate 14. By connecting one end of the electric heating core 3 to the positioning plate 14, the electric heating core 3 will not shift relative to the heat-conducting outer sleeve 2, ensuring that the heat-conducting outer sleeve 2 has a relatively stable and balanced heat transfer effect.

[0034] As a preferred embodiment, Figure 3 As shown, the electric heating core 3 includes a plurality of insulating support blocks 31, a plurality of groups of resistance wires 32, a cold end 33, a tail end 34 and a grounding member 35. The plurality of support blocks 31 are arranged in a "one" shape, and the ends are interlocked with each other. Each group of the resistance wires 32 is provided with two wires. A resistance wire channel adapted to each resistance wire 32 is provided through the plurality of support blocks 31 along the length direction. The resistance wires 32 are respectively installed in the corresponding resistance wire channels. One end of each group of two resistance wires 32 is respectively connected to the cold end 33 and the tail end 34 inserted in the resistance wire channel, and the cold end 33 and the tail end 34 are respectively connected to the cold end 33 and the tail end 34 inserted in the resistance wire channel. One end of the cold end 33 and the tail end 34 extend out of the support block 31 located at the outermost end respectively, the cold end 33 and the tail end 34 are respectively connected to the wiring terminal 4 through lines, the other end of each group of two resistance wires 32 is commonly connected to a conductive connector 36 inserted in the support block 31 at the end, a grounding channel is provided through the length direction of the plurality of support blocks 31, the grounding member 35 is in the shape of a straight strip and is inserted in the grounding channel, one end of the grounding member 35 extends into the power box 1, and the support blocks 31 are respectively connected to the grounding members 35 through screws.

[0035] In the above embodiment, multiple support blocks 31 are interlocked to form independent resistance wire channels inside. Such a design is conducive to ensuring an effective electrical gap between the resistance wires 32, and will not affect the electrical gap due to high heat during use, ensuring that the electric heating core 3 maintains good heating performance. At the same time, the connection assembly between the grounding piece 35 and the support block 31 ensures that the support blocks 31 will not separate or undergo large displacement changes, which is also conducive to maintaining the electrical gap between the resistance wires 32.

[0036] In this embodiment, the support blocks 31 are all magnesium oxide ceramic components.

[0037] In this embodiment, the grounding member 35 is a flat bar-shaped grounding flat iron.

[0038] In this embodiment, the grounding flat iron passes through the outer end support block 31 and extends into one end of the power box 1 and is provided with a Z-shaped bending section, which is connected and fixed to the positioning plate 14 by screws, so that one end of the electric heating core 3 is effectively assembled with the positioning plate 14.

[0039] In this embodiment, the power box 1 , the thermally conductive outer sleeve 2 and the mounting flange 11 are all made of stainless steel. The thermally conductive outer sleeve 2 has good thermal conductivity, and a heat insulating layer can be provided outside the power box 1 .

[0040] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An independent electric heating component, characterized in that: The invention comprises a power supply box (1), a heat-conducting outer sleeve (2), a straight electric heating core (3) and a terminal block (4); one end of the power supply box (1) is open and detachably encapsulated with a mounting flange (11); one end of the heat-conducting outer sleeve (2) is connected to the other end of the power supply box (1), and the two are internally connected; the terminal block (4) is installed in the power supply box (1); the electric heating core (3) is inserted into the heat-conducting outer sleeve (2) and connected to the terminal block (4) through a line; and a line gland (12) is provided on the side wall of the power supply box (1) for the power line to pass through.

2. An independent electric heating assembly according to claim 1, characterized in that: The power box (1) is a cylindrical box body, and the heat-conducting outer sleeve (2) is vertically connected to the middle of the side wall of the other end of the power box (1).

3. An independent electric heating assembly according to claim 1, characterized in that: A fixing flange (21) is provided at one end of the heat-conducting outer sleeve (2) close to the power box (1), and the fixing flange (21) is parallel to the mounting flange (11).

4. An independent electric heating assembly according to claim 1, characterized in that: A side plate is provided on the outer side of one end edge of the power box (1), and the side plate fits the mounting flange (11) and is assembled by bolts passing through the two.

5. An independent electric heating assembly according to claim 4, characterized in that: A sealing ring is sandwiched between the side plate and the mounting flange (11).

6. An independent electric heating assembly according to claim 1, characterized in that: Mounting plates (13) are fixed to the opposite side walls of the power box (1), and connecting plates (41) are provided at both ends of the wiring terminal (4). The connecting plates (41) correspond to the mounting plates (13) one by one and are fixed by bolt connection.

7. An independent electric heating assembly according to claim 1, characterized in that: A positioning plate (14) is provided in the power supply box (1), and one end of the electric heating core (3) is assembled and connected to the positioning plate (14).

8. An independent electric heating assembly according to any one of claims 1 to 7, characterized in that: The electric heating core (3) comprises a plurality of insulating support blocks (31), a plurality of groups of resistance wires (32), a cold end (33), a tail end (34) and a grounding member (35). The plurality of support blocks (31) are arranged in a straight line, and the ends thereof are interlocked with each other. Each group of the resistance wires (32) is provided with two resistance wires. Resistance wire channels adapted to each resistance wire (32) are provided through the plurality of support blocks (31) along the length direction. The resistance wires (32) are respectively installed in the corresponding resistance wire channels. One end of each group of two resistance wires (32) is respectively connected to the cold end (33) and the tail end (34) inserted in the resistance wire channel, and the cold end (33) and the tail end (34) are respectively connected to the cold end (33) and the tail end (34) inserted in the resistance wire channel. One end of the cold end (33) and the tail end (34) respectively extend out of the support block (31) located at the outermost end, the cold end (33) and the tail end (34) are respectively connected to the wiring terminal (4) through lines, the other end of each group of two resistance wires (32) is commonly connected to a conductive connector (36) inserted in the support block (31) at the end, a grounding channel is provided through the plurality of support blocks (31) along the length direction, the grounding member (35) is in the shape of a straight strip and is inserted in the grounding channel, one end of the grounding member (35) extends into the power supply box (1), and the support blocks (31) are respectively connected to the grounding member (35) by screws.

9. An independent electric heating assembly according to claim 8, characterized in that: The grounding piece (35) is a flat grounding flat iron.

10. An independent electric heating assembly according to any one of claims 1 to 7, characterized in that: The power supply box (1), the heat-conducting outer sleeve (2) and the mounting flange (11) are all stainless steel components.

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