Self-limiting temperature electric tracing band structure
By incorporating a PTC conductive plastic tube and terminals into the electric heating tape, combined with a temperature monitor, the problem of unbalanced self-regulating performance in traditional electric heating tapes is solved, achieving stability and safety in self-regulating performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU TANGYUE ELECTRIC HEATING MATERIALS CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional electric heating tapes are prone to damage during prolonged use, leading to an imbalance in their self-regulating temperature performance and posing safety hazards.
A PTC conductive plastic tube is installed between two sets of busbars. The PTC material expands and contracts at different temperatures to form a conductive path. The tube is connected to terminals and a temperature monitor for temperature monitoring to ensure self-limiting temperature performance.
It achieves self-limiting temperature performance of electric heating tape at different temperatures, preventing long-term failures and reducing economic losses.
Smart Images
Figure CN224319545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric heating tape, and more specifically, to a self-limiting temperature heating tape structure. Background Technology
[0002] Electric heating tape is mainly used, but not limited to, for the insulation and heating of solar water heater pipes. In recent years, with the astonishing growth of solar water heaters, the usage of solar electric heating tape has also been growing at a rate of more than 10% per year.
[0003] Traditional electric heating tapes have stable performance, but they are inevitably damaged during long-term use, which can cause an imbalance in their self-regulating temperature performance and pose certain risks.
[0004] Therefore, a self-limiting temperature tracing cable structure is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a self-limiting temperature electric heating cable structure to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-limiting temperature-tracing heating cable structure, comprising an electric heating cable, characterized in that the electric heating cable includes two sets of busbars and a PTC conductive plastic tube disposed between them, both ends of the busbars are provided with connection ends, and the connection ends are electrically connected to terminals, and a temperature monitor is provided at the connection point between the terminals and the busbar connection ends.
[0007] Preferably, the terminal block has multiple sets of through holes on its surface, each set of through holes has a movable post inside, each set of movable posts has a movable ring on its surface, a connecting rod is fixedly mounted on the surface of the movable ring, and a pressure plate is mounted at the bottom of the connecting rod. The pressure plate is electrically connected to the connecting end.
[0008] Preferably, the wiring terminal has a groove on one side of the through hole, and a base is provided at the bottom of the groove, which corresponds to the pressure plate.
[0009] Preferably, the inner wall of the through hole of the terminal block is provided with an L-shaped groove, and a locking block is fixedly provided on the surface of the movable column, and the locking block is movably disposed inside the L-shaped groove.
[0010] Preferably, the surface of the movable ring is provided with a groove, and the movable ring is movably disposed inside the groove.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] Compared with existing technologies, this utility model uses a PTC conductive plastic tube installed between two sets of busbars. When the temperature of the heating tape is low, the PTC material shrinks, the busbar particles are tightly connected, forming a conductive path, and heat is generated when current passes through. When the temperature of the heating tape is high, the PTC material expands, the spacing between the conductor particles increases, the conductive path decreases, the resistance rises sharply, the current decreases, and the heat output decreases, thus ensuring the self-limiting temperature performance of the heating tape. At the same time, the heating tape is connected using wiring terminals, and the temperature of the heating tape is continuously monitored using a temperature monitor to prevent economic losses caused by failure of the heating tape during long-term use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the internal structure of the electric heat tracing cable of this utility model.
[0015] Figure 3 This is a schematic diagram of the internal structure of the terminal block of this utility model.
[0016] The attached diagram is labeled as follows: 1. Electric heating tape; 2. Busbar; 3. Terminal block; 4. Temperature monitor; 5. PTC conductive plastic tube; 6. Connecting end; 7. Base; 8. Pressure plate; 9. Connecting rod; 10. Movable column; 11. Movable ring; 12. Locking block; 13. Ring groove. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Example 1
[0019] As attached Figures 1 to 3 The structure of a self-limiting electric heating cable shown includes an electric heating cable 1. The electric heating cable 1 includes two sets of busbars 2 and a PTC conductive plastic tube 5 disposed between them. Both ends of the busbars 2 are provided with connection terminals 6, and the connection terminals 6 are electrically connected to the terminal blocks 3. A temperature monitor 4 is provided at the connection point between the terminal blocks 3 and the connection terminals 6 of the busbars 2.
[0020] Specifically, the PTC conductive plastic tube 5 installed between the two sets of busbars 2 allows the PTC material to shrink when the temperature of the heating tape 1 is low, resulting in a tight connection between the busbar particles and the formation of a conductive path. Heat is generated when current flows through this path. When the temperature of the heating tape 1 is high, the PTC material expands, increasing the spacing between the conductor particles, reducing the conductive path, causing a sharp increase in resistance, a decrease in current, and a reduction in heat output. This ensures the self-limiting temperature performance of the heating tape 1. Simultaneously, the heating tape 1 is connected using the terminal block 3, and the temperature of the heating tape 1 is continuously monitored using the temperature monitor 4 to prevent economic losses caused by long-term failure of the heating tape 1.
[0021] Example 2
[0022] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below, with reference to the specific working method described in detail:
[0023] like Figures 1 to 3 As shown, in a preferred embodiment, the terminal block 3 has multiple sets of through holes on its surface. Each set of through holes has a movable post 10 inside it. Each set of movable posts 10 has a movable ring 11 on its surface. A connecting rod 9 is fixedly mounted on the surface of the movable ring 11. A pressure plate 8 is mounted at the bottom of the connecting rod 9. The pressure plate 8 is electrically connected to the connecting end 6.
[0024] like Figures 1 to 3 As shown, in a preferred embodiment, the terminal block 3 has a groove on one side of the through hole, and a base 7 is provided at the bottom of the groove, which corresponds to the pressure plate 8.
[0025] like Figures 1 to 3 As shown, in a preferred embodiment, the inner wall of the through hole of the terminal 3 is provided with an L-shaped groove, and a locking block 12 is fixedly provided on the surface of the movable column 10, and the locking block 12 is movably disposed inside the L-shaped groove.
[0026] like Figures 1 to 3 As shown, in a preferred embodiment, the surface of the movable ring 11 is provided with an annular groove 13, and the movable ring 11 is movably disposed inside the annular groove 13.
[0027] The working process of this utility model is as follows:
[0028] In use, this invention utilizes a PTC conductive plastic tube 5 positioned between two sets of busbars 2. When the temperature of the heating tape 1 is low, the PTC material contracts, and the particles of the busbars 2 are tightly connected, forming a conductive path. Heat is generated when current flows through this tube. When the temperature of the heating tape 1 is high, the PTC material expands, the spacing between the conductor particles increases, the conductive path decreases, the resistance rises sharply, the current decreases, and the heat output decreases. This ensures the self-limiting temperature performance of the heating tape 1. Simultaneously, the heating tape 1 is connected using a terminal block 3, and the temperature of the heating tape 1 is continuously monitored using a temperature monitor 4 to prevent economic losses caused by long-term malfunctions of the heating tape 1.
[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A self-regulating electric heating cable structure, comprising an electric heating cable (1), characterized in that, The electric heating tape (1) includes two sets of busbars (2) and a PTC conductive plastic tube (5) between them. Both ends of the busbars (2) are provided with connection ends (6), and the connection ends (6) are electrically connected to the terminal blocks (3). A temperature monitor (4) is provided at the connection point between the terminal blocks (3) and the connection ends (6) of the busbars (2).
2. The self-regulating electric heating tape structure according to claim 1, characterized in that: The terminal block (3) has multiple sets of through holes on its surface. Each set of through holes has a movable post (10) inside it. Each set of movable posts (10) has a movable ring (11) on its surface. A connecting rod (9) is fixedly installed on the surface of the movable ring (11). A pressure plate (8) is installed at the bottom of the connecting rod (9). The pressure plate (8) is electrically connected to the connecting end (6).
3. The self-regulating electric heating tape structure according to claim 2, characterized in that: The terminal block (3) has a groove on one side of the through hole, and a base (7) is provided at the bottom of the groove. The base (7) corresponds to the pressure plate (8).
4. The structure of a self-regulating electric heating tape according to claim 2, characterized in that: The inner wall of the through hole of the terminal (3) is provided with an L-shaped groove, and the surface of the movable column (10) is fixedly provided with a locking block (12), which is movably disposed inside the L-shaped groove.
5. The structure of a self-regulating electric heating tape according to claim 2, characterized in that: The movable ring (11) has a groove (13) on its surface, and the movable ring (11) is movably disposed inside the groove (13).