An automatic power-off and anti-arcing protection device for broken wire of electric heating wire

Abstract

The utility model relates to circuit installation protection technical field, and disclose a kind of electric heating wire broken wire automatic power-off and anti-arcing protection device, solve the problem that electric heating wire in the process of use, its power connection circuit cannot reach broken wire automatic power-off and anti-arcing protection effect, it includes shell, the top of shell is fixedly installed with control switch, the middle part of the front and rear two sides of shell is fixedly installed with binding post, the inside symmetry of shell is installed with metal conducting frame, and the end of two metal conducting frames away from each other is respectively fixedly connected with the one end of two binding posts in the inside of shell, the inside two sides of shell are respectively fixedly installed with resistance sensor and arc sensor, the two sides of shell are respectively fixedly installed with terminal block, and the inside middle part of shell is installed with regulating power-on component;The utility model makes that electric heating wire in the process of use, its power connection circuit can reach broken wire automatic power-off and anti-arcing protection effect, improve the security of line.

Description

Technical Field

[0001] This utility model belongs to the field of circuit installation protection technology, specifically a device for automatic power-off and anti-arc protection when the heating wire breaks. Background Technology

[0002] Heating wire is a metal resistance wire that converts electrical energy into heat energy. It is widely used in industrial and civil heating equipment. Heating wire is usually made of iron-chromium-aluminum alloy or nickel-chromium alloy. These materials have high resistivity, high temperature resistance and oxidation resistance, and can work stably for a long time in high temperature environments. However, during the use of heating wire, its circuit cannot achieve the effect of automatic power cut-off when the wire breaks or anti-arc protection, which reduces the safety of the circuit and makes it difficult to achieve better practicality. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides an automatic power-off and anti-arc protection device for broken heating wires. It effectively solves the problem that the power lines of the heating wire cannot achieve the effect of automatic power-off and anti-arc protection when the wire breaks, which reduces the safety of the circuit and makes it difficult to achieve better practicality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic power-off and anti-arc protection device for broken heating wires, comprising a housing, a control switch fixedly installed on the top of the housing, terminals fixedly installed in the middle of the front and rear sides of the housing, symmetrically installed metal conductive frames inside the housing, with one end of each metal conductive frame being fixedly connected to one end of each terminal located inside the housing, a resistance sensor and an arc sensor fixedly installed on the two sides inside the housing, and terminal blocks fixedly installed on the two sides of the housing, with one end of each resistance sensor and arc sensor fixedly penetrating through the housing and fixedly connected to the two terminal blocks respectively, and an adjusting power supply component installed in the middle of the housing, with the top of the adjusting power supply component extending to the top of the housing.

[0005] Preferably, the regulating power supply component includes a circular insulating block located in the center of the housing. An annular groove is provided around the outer side of the circular insulating block, and a conductive ring is fixedly installed inside the annular groove. Conductive plates are symmetrically fixedly installed on the outer side of the conductive ring, with each conductive plate contacting the end of a metal conductive frame away from the terminal block. An regulating shaft is fixedly installed through the interior of the circular insulating block, and the bottom of the regulating shaft is rotatably connected to the center of the bottom of the housing. A frame is fixedly installed on the top of the housing, and the top of the regulating shaft extends movably through and into the interior of the frame. An regulating motor is fixedly installed inside the frame, and an regulating gear is fixedly installed on the top of the output shaft of the regulating motor. A speed-increasing gear ring is meshed with the outer side of the regulating gear, and the speed-increasing gear ring is fixedly installed on the outer side of the top of the regulating shaft.

[0006] Preferably, the circular insulating block has symmetrical arc-shaped limiting grooves that extend through its interior, and the arc of each of the two arc-shaped limiting grooves is 60 degrees. Limiting rods are slidably installed inside each of the two arc-shaped limiting grooves, and the bottom of each of the two limiting rods is fixedly connected to the bottom of the interior of the housing, and the top of each of the two limiting rods is fixedly connected to the top of the interior of the housing.

[0007] Preferably, mounting strips are symmetrically fixedly installed on the bottom of the housing, and mounting holes are opened through both ends of the two mounting strips.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1) During operation, through the interaction of the housing, control switch, terminal block, metal conductive frame, resistance sensor, arc sensor, terminal block and adjusting power supply components, the heating wire can achieve automatic power cut-off and anti-arc protection in the power supply circuit during use, which improves the safety of the circuit and makes it more practical.

[0010] 2) During operation, the interaction between the arc-shaped limiting slide groove and the limiting slide column can limit the rotation range of the circular insulating block, thereby ensuring that the adjusting power supply component can work stably. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram:

[0013] Figure 1 This is a schematic diagram of the structure of an automatic power-off and anti-arc protection device for a broken heating wire according to the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the shell of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the regulating power supply component of this utility model;

[0016] Figure 4 This is a schematic diagram of the circular insulating block structure of this utility model.

[0017] In the diagram: 1. Housing; 2. Control switch; 3. Terminal block; 4. Metal conductive frame; 5. Resistance sensor; 6. Arc sensor; 7. Terminal block; 8. Adjustable power supply assembly; 9. Circular insulating block; 10. Annular groove; 11. Conductive ring; 12. Conductive sheet; 13. Adjusting shaft; 14. Frame; 15. Adjusting motor; 16. Adjusting gear; 17. Speed-increasing gear ring; 18. Arc-shaped limit slide groove; 19. Limiting slide rod; 20. Mounting strip; 21. Mounting hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Example 1, by Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention relates to an automatic power-off and anti-arc protection device for a broken heating wire, comprising a housing 1, mounting strips 20 symmetrically fixedly installed at the bottom of the housing 1, and mounting holes 21 penetrating through both ends of the two mounting strips 20; a control switch 2 fixedly installed at the top of the housing 1; terminals 3 fixedly installed at the middle of the front and rear sides of the housing 1; metal conductive frames 4 symmetrically installed inside the housing 1, with the ends of the two metal conductive frames 4 respectively fixedly connected to the ends of the two terminals 3 located inside the housing 1; a resistance sensor 5 and an arc sensor 6 fixedly installed on the two sides of the inside of the housing 1; wiring boards 7 fixedly installed on the two sides of the housing 1, with one end of the resistance sensor 5 and the arc sensor 6 fixedly penetrating through the housing 1 and fixedly connected to the two wiring boards 7 respectively; and an adjusting power supply component 8 installed in the middle of the inside of the housing 1, with the top of the adjusting power supply component 8 extending to the top of the housing 1.

[0020] During use, the interaction of the housing 1, control switch 2, terminal block 3, metal conductive frame 4, resistance sensor 5, arc sensor 6, terminal block 7, and power adjustment component 8 enables the heating wire to achieve automatic power cut-off in case of wire breakage and anti-arc protection during use, thus improving the safety of the circuit and facilitating better practicality.

[0021] The regulating power supply assembly 8 includes a circular insulating block 9, which is located in the middle of the interior of the housing 1. The outer side of the circular insulating block 9 is provided with an annular groove 10. A conductive ring 11 is fixedly installed inside the annular groove 10. A conductive sheet 12 is symmetrically fixedly installed outside the conductive ring 11. The two conductive sheets 12 are respectively in contact with the ends of the two metal conductive frames 4 away from the terminal 3. An regulating shaft 13 is fixedly installed through the interior of the circular insulating block 9. The bottom of the regulating shaft 13 is rotatably connected to the middle of the bottom end of the interior of the housing 1. A frame 14 is fixedly installed on the top of the housing 1. The top of the regulating shaft 13 movably passes through and extends into the interior of the frame 14. An regulating motor 15 is fixedly installed inside the frame 14. An regulating gear 16 is fixedly installed on the top of the output shaft of the regulating motor 15. An speed-increasing gear ring 17 is meshed with the outer side of the regulating gear 16. The speed-increasing gear ring 17 is fixedly installed on the outer side of the top of the regulating shaft 13.

[0022] The circular insulating block 9 has symmetrical arc-shaped limiting grooves 18 running through its interior, and the arc of each arc-shaped limiting groove 18 is 60 degrees. Limiting rods 19 are slidably installed inside each of the two arc-shaped limiting grooves 18, and the bottom of each limiting rod 19 is fixedly connected to the bottom of the interior of the housing 1, and the top of each limiting rod 19 is fixedly connected to the top of the interior of the housing 1. During use, the interaction between the arc-shaped limiting grooves 18 and the limiting rods can limit the rotation range of the circular insulating block 9, thereby ensuring that the adjusting power supply component 8 can work stably.

[0023] Working Principle: During operation, the mounting strip 20 is first fixedly installed using mounting bolts that match the diameter of the mounting hole 21, thus achieving a fixed installation of the entire device. Then, during use, the device is connected to the heating wire power line via two terminals 3, and the resistance sensor 5 and arc sensor 6 are connected to the heating wire circuit via two terminal blocks 7. When the resistance sensor 5 detects an abnormally high resistance in the heating wire or the arc sensor 6 detects an arc light signal, the control switch 2 receives the signal and starts the regulating motor 15. The regulating motor 15 drives the regulating gear 16 to rotate, which in turn drives the speed-increasing gear ring 17 to rotate, which in turn drives the regulating shaft 13 to rotate. 13 drives the circular insulating block 9 to rotate, which in turn drives the conductive ring 11 to rotate. The conductive ring 11 drives the two conductive plates 12 to move simultaneously. The two conductive plates 12 move and disengage from the two metal conductive frames 4 respectively, thus realizing the power-off operation of the heating wire's power supply circuit. During this process, the circular insulating block 9 moves outside the two limiting slide rods 19 under the action of the two arc-shaped limiting slide grooves 18. After the circular insulating block 9 rotates 60 degrees, it stops moving due to the obstruction of the limiting slide rods 19. Then, the motor 15 is turned off. This allows the heating wire's power supply circuit to achieve automatic power-off in case of wire breakage and anti-arc protection during use, improving the safety of the circuit and thus facilitating better practicality.

Claims

1. An automatic power-off and anti-arc protection device for broken heating wire, comprising a housing (1), characterized in that: A control switch (2) is fixedly installed on the top of the housing (1). Terminals (3) are fixedly installed in the middle of the front and rear sides of the housing (1). Metal conductive frames (4) are symmetrically installed inside the housing (1). The ends of the two metal conductive frames (4) that are far apart from each other are fixedly connected to the ends of the two terminals (3) located inside the housing (1). A resistance sensor (5) and an arc sensor (6) are fixedly installed on the two sides inside the housing (1). A terminal block (7) is fixedly installed on the two sides of the housing (1). One end of the resistance sensor (5) and the arc sensor (6) are fixedly inserted through the housing (1) and fixedly connected to the two terminal blocks (7). An adjustment power supply component (8) is installed in the middle of the inside of the housing (1). The top of the adjustment power supply component (8) extends to the top of the housing (1).

2. The automatic power-off and anti-arc protection device for heating wire breakage according to claim 1, characterized in that: The regulating power supply assembly (8) includes a circular insulating block (9), which is located in the middle of the housing (1). An annular groove (10) is provided around the outer side of the circular insulating block (9). A conductive ring (11) is fixedly installed inside the annular groove (10). Conductive plates (12) are symmetrically fixedly installed on the outer side of the conductive ring (11), and the two conductive plates (12) respectively contact the ends of the two metal conductive frames (4) away from the terminals (3). An adjusting shaft (13) is fixedly installed through the interior of the circular insulating block (9), and the adjusting... The bottom of the shaft (13) is rotatably connected to the middle of the bottom of the housing (1). A frame (14) is fixedly installed on the top of the housing (1). The top of the adjusting shaft (13) extends through and into the interior of the frame (14). An adjusting motor (15) is fixedly installed inside the frame (14). An adjusting gear (16) is fixedly installed on the top of the output shaft of the adjusting motor (15). An increasing gear ring (17) is meshed on the outside of the adjusting gear (16). The increasing gear ring (17) is fixedly installed on the outside of the top of the adjusting shaft (13).

3. The automatic power-off and anti-arc protection device for heating wire breakage according to claim 2, characterized in that: The circular insulating block (9) has symmetrical arc-shaped limiting grooves (18) slidably through its interior. The arc of each of the two arc-shaped limiting grooves (18) is 60 degrees. Limiting rods (19) are slidably installed inside each of the two arc-shaped limiting grooves (18). The bottom of each of the two limiting rods (19) is fixedly connected to the bottom of the interior of the housing (1), and the top of each of the two limiting rods (19) is fixedly connected to the top of the interior of the housing (1).

4. The automatic power-off and anti-arc protection device for heating wire breakage according to claim 1, characterized in that: The bottom of the housing (1) is symmetrically fixed with mounting strips (20), and mounting holes (21) are opened through both ends of the two mounting strips (20).

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