High-temperature electric heating element of voltage stabilizer

Abstract

The utility model relates to the technical field of electric heating equipment, in particular to a voltage stabilizer high-temperature electric heating element which comprises a heat conduction shell, a heating wire and a fixing column, the fixing column is made of insulating materials, the heat conduction shell is arranged on the fixing column in a sleeving mode, wire clamping grooves are symmetrically formed in the outer side wall of the fixing column relative to the axis of the fixing column, and the wire clamping grooves are used for fixing the heating wire. A reversing notch is formed between the two symmetrical wire clamping grooves in the fixing column, the heating wire penetrates through the wire clamping groove in one side to the other symmetrical wire clamping groove through the reversing notch, a plugging block is arranged at the end of the heat conduction shell, the two ends of the heating wire penetrate through the plugging block to the outside of the plugging block, the wire clamping grooves are formed in the axis direction of the fixing column, and the two ends of the heating wire penetrate through the plugging block. The heating wire is in a continuous S shape and is arranged in the length direction of the wire clamping groove, wire bunching grooves are formed in the two sides of the wire clamping groove in the length direction of the wire clamping groove, and the wire bunching grooves are used for clamping the heating wire. The electric heating pipe has the effect of improving the heating uniformity of the electric heating pipe.

Description

Technical Field

[0001] The present application relates to the technical field of electric heating equipment, and in particular to a high-temperature electric heating element of a voltage stabilizer. Background Art

[0002] Electric heating tube is an electrical component that converts electrical energy into thermal energy. It is mainly composed of metal tube, spiral resistance wire and crystalline magnesium oxide powder. The characteristics of electric heating tube include high thermal efficiency, advanced structure, uniform heating, long service life, easy installation, safe and reliable use, and little impact on the environment. It is widely used in various heating occasions, such as boiler heating, heating air, oil, water, chemical media, etc.

[0003] A Chinese patent with announcement number CN213586343U discloses a high-temperature electric heating element for a voltage stabilizer, comprising a heating tube body, heat-conducting oil and a heating wire arranged in the heating tube body, wherein the heating wire is composed of a carbon fiber heating wire, the heating tube body comprises a tube body and a tube seat sealed with the tube body, the tube body is a heat-conducting metal tube, the carbon fiber heating wire and the electric wire are both arranged on the tube seat, a fixed tube is arranged on the tube seat, the fixed tube is inserted into the cavity of the tube body, and the carbon fiber heating wire is wrapped around the outer surface of the fixed tube.

[0004] In the above technology, since the heating wire is wrapped around the outer surface of the fixed tube and immersed in heat transfer oil, when the electric heating tube is used vertically, the pitch of the heating wire will change along the axial direction of the fixed tube under the action of gravity, resulting in differences in the heating effects of the electric heating tube at different positions along its axial direction, affecting the accuracy of the temperature value measurement of the electric heating tube, and there are deficiencies. Utility Model Content

[0005] In order to improve the problem of uneven heating of electric heating tubes, the present application provides a voltage stabilizer high-temperature electric heating element.

[0006] The present application provides a voltage stabilizer high temperature electric heating element adopts the following technical solution:

[0007] A high-temperature electric heating element for a voltage stabilizer comprises a heat-conducting outer shell, a heating wire and an insulating fixed column, wherein the heat-conducting outer shell is sleeved on the fixed column, and a wire clamping groove is symmetrically provided on the outer side wall of the fixed column relative to its axis, and the wire clamping groove is used to fix the heating wire, and a reversing notch is provided between two symmetrical wire clamping grooves on the fixed column, and the heating wire passes through the reversing notch from the wire clamping groove on one side to the other wire clamping groove symmetrical thereto, and a blocking block is provided at the end of the heat-conducting outer shell, and both ends of the heating wire pass through the blocking block to the outside of the blocking block.

[0008] By adopting the above technical scheme, workers only need to evenly install the heating wire on the wire clamping groove. Under the restriction of the wire clamping groove, the heating wire is fixed on the fixed column, so that the heating effect of the heating wire in the axial direction of the fixed column tends to be the same, which is beneficial to improve the accuracy of the heating temperature measurement of the electric heating tube.

[0009] Optionally, the wire clamping slot is opened along the axial direction of the fixing column, the heating wire is in a continuous S shape and is arranged along the length direction of the wire clamping slot, and the wire clamping slot is opened on both sides along its length direction, and the S-shaped bend of the heating wire is clamped on the wire clamping slot.

[0010] By adopting the above technical solution, the wire bundle grooves on both sides of the wire clamping groove clamp the two sides of the S-shape of the heating wire. On the one hand, the possibility of automatic movement of the heating wire is reduced, and on the other hand, the length of the heating wire is increased, which is beneficial to improve the heating effect of the heating wire.

[0011] Optionally, an outer side wall of the fixing column contacts an inner side wall of the heat-conducting outer shell, and a heat-conducting medium is filled in a cavity formed by the wire clamping groove and the heat-conducting outer shell.

[0012] By adopting the above technical solution, the use amount of heat-conducting medium is reduced while ensuring the heat-conducting effect of the heating wire, which is beneficial to reducing the production cost of the electric heating tube.

[0013] Optionally, the fixed column includes a plurality of coaxial unit columns stacked in sequence, and the reversing notches are provided on the unit columns.

[0014] By adopting the above technical solution, workers can assemble a certain number of unit columns by setting the length of the electric heating tube, and the unit columns can be prefabricated in batches. On the one hand, it is beneficial for workers to design electric heating tubes of different lengths, and on the other hand, it is beneficial to further reduce the production cost of the electric heating tubes.

[0015] Optionally, the cross section of the inner side wall of the wire clamping slot facing away from the open end thereof is arc-shaped, and the heating wire is in contact with the arc-shaped inner side wall of the wire clamping slot.

[0016] By adopting the above technical solution, the cross-section of the heating wire along the axial direction of the fixed column is also arc-shaped, which further lengthens the length of the heating wire and improves the heating effect. When the heating wire is installed on the fixed column composed of multiple unit columns, the heating wire has a restraining effect on the fixed column composed of multiple unit columns, reducing the possibility of separation between two adjacent unit columns.

[0017] Optionally, an adjustment block is provided between the fixed column and the blocking block, the adjustment block is made of insulating material, the adjustment block is located in the heat-conductive outer shell and there is a gap between the adjustment block and the inner wall of the heat-conductive outer shell, a plurality of conductive columns are passed through the adjustment block, both ends of the heating wire are connected to conductive columns, and one end of the conductive column facing away from the heating wire extends to the outside of the blocking block.

[0018] By adopting the above technical solution, when the electric heating tube is installed on the equipment, the contact position between the electric heating tube and the equipment is at the position of the adjustment block. At the same time, the diameter of the conductive column will be larger than the diameter of the heating wire, thereby reducing the heat generation of the electric heating tube at the position of the adjustment block and reducing the waste of electric energy of the electric heating tube in the non-heating area. At the same time, the adjustment block does not affect the filling of the heat conductive medium.

[0019] Optionally, multiple groups of symmetrical wire clamping grooves are provided on the fixed column, and the multiple groups of symmetrical wire clamping grooves are evenly distributed circumferentially about the axis of the fixed column, and each group of symmetrical wire clamping grooves is provided with a heating wire.

[0020] By adopting the above technical solution, the heating power of the electric heating tube is improved, and at the same time, it is helpful for workers to make the diameter of the electric heating tube larger, which is conducive to the production and manufacturing of electric heating tubes with larger diameters.

[0021] Optionally, both ends of the unit column are respectively provided with a protrusion and a groove, and the protrusion of one unit column is plug-fitted with the groove of another adjacent unit column.

[0022] By adopting the above technical solution, it is beneficial to maintain stability when multiple unit columns are stacked, reduce the change in angle caused by the rotation of multiple unit columns, and reduce the possibility of compression on the heating wire in the heating state causing the heating wire to deform.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Workers only need to evenly install the heating wire on the wire slot. Under the restriction of the wire slot, the heating wire is fixed on the fixed column, so that the heating effect of the heating wire in the axial direction of the fixed column tends to be the same, which is conducive to improving the accuracy of the heating temperature measurement of the electric heating tube;

[0025] 2. The cable ducts on both sides of the cable duct clamp the two sides of the S-shaped heating wire. On the one hand, it reduces the possibility of the heating wire moving automatically, and on the other hand, it increases the length of the heating wire, which is beneficial to improve the heating effect of the heating wire;

[0026] 3. Workers assemble a certain number of unit columns by setting the length of the electric heating tube, and the unit columns can be prefabricated in batches. On the one hand, it is beneficial for workers to design electric heating tubes of different lengths, and on the other hand, it is beneficial to further reduce the production cost of the electric heating tube;

[0027] 4. The cross-section of the heating wire along the axial direction of the fixed column is also arc-shaped, which further lengthens the length of the heating wire and improves the heating effect. When the heating wire is installed on the fixed column composed of multiple unit columns, the heating wire constrains the fixed column composed of multiple unit columns and reduces the possibility of separation between two adjacent unit columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0029] Figure 2 It is a partial cross-sectional view of the positional relationship among the unit column, the adjustment block and the blocking block in the embodiment of the present application.

[0030] Figure 3 It is a structural schematic diagram of the positional relationship among the unit column, the reversing notch and the heating wire in the embodiment of the present application.

[0031] Figure 4 It is a structural schematic diagram of the positional relationship among the unit column, the conductive column and the adjustment block in the embodiment of the present application.

[0032] Figure 5 It is a structural schematic diagram of the positional relationship among the unit columns, protrusions and grooves in the embodiment of the present application.

[0033] Explanation of the reference numerals: 1. heat-conducting shell; 2. heating wire; 3. fixing column; 31. unit column; 4. wire clamping groove; 5. reversing notch; 6. blocking block; 7. wire harness groove; 8. adjustment block; 9. conductive column; 10. protrusion; 11. groove; 12. step block; 13. conductive sheet; 14. temperature sensor. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses a high-temperature electric heating element of a voltage stabilizer.

[0036] Reference Figure 1 A voltage stabilizer high temperature electric heating element comprises a heat conductive shell 1, a heating wire 2 and an insulating fixed column 3. The heat conductive shell 1 can be made of stainless steel material. The heat conductive shell 1 is sleeved on the fixed column 3. The fixed column 3 is made of insulating ceramic. A temperature sensor 12 is passed through the fixed column 3. A wire clamping groove 4 is symmetrically opened on the outer wall of the fixed column 3 relative to its axis.

[0037] Reference Figure 2 , Figure 3 and Figure 4The wire clamping groove 4 is opened along the axial direction of the fixing column 3, and the wire clamping groove 4 is used to fix the heating wire 2. A reversing notch 5 is opened between the two symmetrical wire clamping grooves 4 on the fixing column 3. The heating wire 2 passes through the reversing notch 5 from the wire clamping groove 4 on one side to the other wire clamping groove 4 symmetrical thereto. The end of the heat-conducting housing 1 is threadedly connected with a blocking block 6, and both ends of the heating wire 2 pass through the blocking block 6 to the outside of the blocking block 6.

[0038] Reference Figure 2 , Figure 3 and Figure 4 The heating wire 2 is in a continuous S-shape and is arranged along the length direction of the wire clamping groove 4. The wire clamping groove 7 is opened on both sides of the wire clamping groove 4 along its length direction. The wire clamping groove 7 is used to clamp the S-shaped bending part of the heating wire 2. The cross-section of the inner side wall of the wire clamping groove 4 facing away from its open end is arc-shaped. The heating wire 2 is in contact with the arc-shaped inner side wall of the wire clamping groove 4. The outer side wall of the fixing column 3 is in contact with the inner side wall of the heat-conducting shell 1. The cavity formed by the wire clamping groove 4 and the heat-conducting shell 1 is filled with a heat-conducting medium (not shown in the figure). The heat-conducting medium can adopt materials such as magnesium oxide powder in the prior art.

[0039] The worker installs the continuous S-shaped heating wire 2 on the fixing column 3, and clamps the heating wire 2 through the wire groove 7 on the fixing column 3, then adjusts the spacing of the heating wire 2, and then puts the heat-conducting shell 1 on the fixing column 3, and finally fills the heat-conducting medium into the cavity formed by the wire groove 4 and the heat-conducting shell 1.

[0040] Reference Figure 2 , Figure 3 and Figure 4 The fixed column 3 includes a plurality of coaxial and sequentially stacked unit columns 31, the reversing slot 5 is opened on the unit column 31, and a plurality of adjustment blocks 8 are arranged between the fixed column 3 and the blocking block 6. The adjustment block 8 can be made of insulating ceramic.

[0041] Reference Figure 2 , Figure 3 and Figure 5 The adjustment block 8 is located in the heat-conducting outer shell 1 and there is a gap between the adjustment block 8 and the inner wall of the heat-conducting outer shell 1. Part of the circumferential position of the adjustment block 8 contacts the inner wall of the heat-conducting outer shell 1. A plurality of conductive columns 9 are provided on the adjustment block 8. A protrusion 10 and a groove 11 are respectively provided at both ends of the unit column 31. The protrusion 10 of one unit column 31 is plugged into and matched with the groove 11 of another adjacent unit column 31.

[0042] Reference Figure 2 , Figure 3 and Figure 4Both ends of the heating wire 2 are connected to conductive columns 9, and one end of the conductive column 9 facing away from the heating wire 2 extends to the outside of the blocking block 6. Two groups of symmetrical wire-holding grooves 4 are opened on the fixed column 3. The two groups of symmetrical wire-holding grooves 4 are evenly distributed circumferentially about the axis of the fixed column 3. The heating wires 2 are arranged on the two groups of symmetrical wire-holding grooves 4, and a stepped block 12 is integrally formed on the blocking block 6.

[0043] Reference Figure 1 and Figure 2 Among the two conductive columns 9 on the same heating wire 2, the end of one of the conductive columns 9 passes through the outside of the step block 12, and a conductive sheet 13 is bolted to the conductive column 9 outside the blocking block 6. The conductive sheet 13 is used to connect the two groups of heating wires 2 in series or in parallel.

[0044] Workers assemble a certain number of unit columns 31 according to the designed length of the electric heating tube, and then install two heating wires 2 on the fixed column 3 formed by assembling multiple unit columns 31, and then install multiple adjustment blocks 8 on the conductive column 9, and weld a conductive column 9 at both ends of the heating wire 2, then put the heat-conducting outer shell 1 on the fixed column 3 and fill it with heat-conducting medium, and then fix the conductive column 9 on the blocking block 6, and finally connect the two groups of heating wires 2 in series or in parallel through the conductive sheet 13 as needed.

[0045] The implementation principle of a high-temperature electric heating element of a voltage stabilizer in an embodiment of the present application is as follows: a worker installs a continuous S-shaped heating wire 2 on a fixing column 3, and clamps the heating wire 2 through a wire binding groove 7 on the fixing column 3, and then adjusts the spacing of the heating wires 2, and then puts the heat-conducting outer shell 1 on the fixing column 3, and finally fills the cavity formed by the wire binding groove 4 and the heat-conducting outer shell 1 with a heat-conducting medium.

[0046] Workers assemble a certain number of unit columns 31 according to the designed length of the electric heating tube, and then install two heating wires 2 on the fixed column 3 formed by assembling multiple unit columns 31, and then install multiple adjustment blocks 8 on the conductive column 9, and weld a conductive column 9 at both ends of the heating wire 2, then put the heat-conducting outer shell 1 on the fixed column 3 and fill it with heat-conducting medium, and then fix the conductive column 9 on the blocking block 6, and finally connect the two groups of heating wires 2 in series or in parallel through the conductive sheet 13 as needed.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high temperature electric heating element for a voltage stabilizer, characterized in that: The invention comprises a heat-conducting outer shell (1), a heating wire (2) and a fixing column (3), wherein the fixing column (3) is made of an insulating material, the heat-conducting outer shell (1) is sleeved on the fixing column (3), a wire clamping groove (4) is symmetrically provided on the outer wall of the fixing column (3) relative to its axis, the wire clamping groove (4) is used to fix the heating wire (2), a reversing notch (5) is provided between two symmetrical wire clamping grooves (4) on the fixing column (3), the heating wire (2) passes through the reversing notch (5) from the wire clamping groove (4) on one side to the other symmetrical wire clamping groove (4), a blocking block (6) is provided at the end of the heat-conducting outer shell (1), and both ends of the heating wire (2) pass through the blocking block (6) to the outside of the blocking block (6).

2. A voltage stabilizer high temperature electric heating element according to claim 1, characterized in that: The wire clamping groove (4) is opened along the axial direction of the fixing column (3); the heating wire (2) is in a continuous S-shape and is arranged along the length direction of the wire clamping groove (4); the wire clamping groove (4) is opened on both sides along the length direction thereof with a wire bundling groove (7); the S-shaped bend of the heating wire (2) is clamped on the wire bundling groove (7).

3. The voltage stabilizer high temperature electric heating element according to claim 1, characterized in that: The outer wall of the fixing column (3) contacts the inner wall of the heat-conducting outer shell (1), and the cavity formed by the wire clamping groove (4) and the heat-conducting outer shell (1) is filled with a heat-conducting medium.

4. The voltage stabilizer high temperature electric heating element according to claim 1, characterized in that: The fixed column (3) comprises a plurality of coaxial unit columns (31) stacked in sequence, and the reversing notches (5) are provided on the unit columns (31).

5. The voltage stabilizer high temperature electric heating element according to claim 2, characterized in that: The cross section of the inner side wall of the wire clamping slot (4) facing away from the open end thereof is arc-shaped, and the heating wire (2) is in contact with the arc-shaped inner side wall of the wire clamping slot (4).

6. The voltage stabilizer high temperature electric heating element according to claim 1, characterized in that: An adjustment block (8) is arranged between the fixing column (3) and the blocking block (6); the adjustment block (8) is made of insulating material; the adjustment block (8) is located inside the heat-conducting outer shell (1) and there is a gap between the adjustment block (8) and the inner wall of the heat-conducting outer shell (1); a plurality of conductive columns (9) are passed through the adjustment block (8); both ends of the heating wire (2) are connected to the conductive columns (9); and one end of the conductive column (9) facing away from the heating wire (2) extends to the outside of the blocking block (6).

7. The voltage stabilizer high temperature electric heating element according to claim 4, characterized in that: A plurality of symmetrical wire-holding grooves (4) are provided on the fixed column (3), the plurality of symmetrical wire-holding grooves (4) are evenly distributed in the circumferential direction about the axis of the fixed column (3), and a heating wire (2) is provided on each of the symmetrical wire-holding grooves (4).

8. The voltage stabilizer high temperature electric heating element according to claim 4, characterized in that: Both ends of the unit column (31) are respectively provided with a protrusion (10) and a groove (11), wherein the protrusion (10) of one unit column (31) is plug-fitted into the groove (11) of another adjacent unit column (31).

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