Environment-friendly self-temperature-control heat tracing cable

Abstract

The invention relates to the technical field of self-temperature-control heat tracing cables, solves the technical problem that a splicing part cannot heat, and particularly relates to an environment-friendly self-temperature-control heat tracing cable which comprises an external bin serving as a supporting foundation, and one side of the inner side of the external bin is fixedly connected with a fixed limiting seat; the end, away from the fixed limiting base, of the inner side of the external bin is fixedly connected with a supporting baffle, the inner side of the external bin is provided with a freezing abutting assembly for replacing a component to trigger a heating component to heat the cable connecting position, and one end of the external bin is fixedly connected with a clamping connecting assembly for fixing the cable splicing position. Due to the arrangement of the freezing abutting assembly, the freezing abutting assembly can replace a component to trigger the heating assembly to operate, the disconnection position of the heating assembly is closed through thrust caused by the increase of the volume of frozen water, so that the heating assembly is closed, the clamping connecting assembly is heated, and the triggering mode is low in cost and high in practicability. And the later maintenance is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of self-regulating heating cables, and particularly to an environment-friendly self-regulating heating cable. Background Art

[0002] The working principle of a self-regulating heating cable mainly depends on the internal polymer PTC material. This material has special resistance characteristics, and its resistance value changes with the change of temperature. When the temperature around the cable decreases, the resistance value of the PTC material decreases, the current increases, and the generated heat also increases, thereby heating the medium around the cable; conversely, when the temperature rises, the resistance value increases, the current decreases, and the generated heat decreases, realizing the functions of automatically adjusting the output power and limiting the heating temperature. In a low-temperature environment, the self-regulating heating cable can prevent the liquid or gas in equipment such as pipelines and storage tanks from freezing, avoiding pipeline blockage or equipment damage. However, when the existing heating cables are connected to each other, the cortex needs to be peeled off, and the peeled-off part of the cortex will lose the temperature control effect, resulting in the situation that the cable connection cannot generate heat. In a low-temperature environment, this part of the self-regulating heating cable will freeze due to rainfall, thereby increasing the gravity of this part of the heating cable. Over time, there is a risk of fracture at the cable splicing part. If too many components are used to heat the splicing part, it will increase the difficulty of later maintenance, and the complex triggering components will also increase the failure rate. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides an environment-friendly self-regulating heating cable, which solves the technical problem that the splicing part cannot generate heat and achieves the purpose of improving practicality.

[0004] To solve the above technical problems, the present invention provides the following technical solution: an environment-friendly self-regulating heating cable, including an external storage as a support foundation, one side of the inner side of the external storage is fixedly connected with a fixed limit seat, the end of the inner side of the external storage far from the fixed limit seat is fixedly connected with a support baffle, a freezing contact assembly for heating the cable connection in place of the component triggering heating part is arranged inside the external storage, one end of the external storage is fixedly connected with a clamping connection assembly for fixing the cable splicing, and a heating assembly for heating itself is arranged inside the clamping connection assembly; The freezing resistance assembly includes three windward tubes equidistantly fixedly connected to the top of the external bin, movable slide grooves are opened at both ends of the inner side of the external bin, sliders are slidably connected to the inner side of the movable slide groove, a return spring is connected between the slider and the movable slide groove, a pushing plate is fixedly connected between two of the sliders, three folding tubes are equidistantly connected between the pushing plate and the supporting baffle, one end of the supporting baffle is located on both sides of the folding tube and a plurality of guide rods are equidistantly fixedly connected, sliding blocks fixedly connected to both sides of the folding tube are slidably connected to the outer side of the guide rod, and the ends of the sliding blocks on both sides of the folding tube close to one end of the pushing plate are fixedly connected to an extension frame, the bottom end of the extension frame is fixedly connected to a pushing slider, the middle end of the pushing plate away from the folding tube is fixedly connected to a resistance rod, and the end of the resistance rod is fixedly connected to a guide plate.

[0005] Preferably, a condensate discharge assembly for discharging condensed water inside the external bin is provided at the bottom end of the external bin; The condensate discharge assembly includes a flip plate rotatably connected to one side of the bottom end of the external bin, a guide plate fixedly connected to the other side of the bottom end of the external bin, support plates fixedly connected to both sides of the bottom end of the external bin, and a support spring fixedly connected to the top of the support plate.

[0006] Preferably, the bottom end of the pushing slider is in contact with the inclined surface of the flip plate, and the other end of the supporting spring is connected to the bottom end of the flip plate.

[0007] Preferably, one end of a plurality of the folding tubes close to the supporting baffle plate passes through the supporting baffle plate and extends to the inside of the fixed limiting seat and is respectively connected to the bottom end of the adjacent windward tube.

[0008] Preferably, the clamping connection assembly includes a hoop fixedly connected to one end of the external warehouse and on both sides of the interference rod, two symmetrical insulating sleeves are slidably connected to the inner side of the hoop, an embedded layer is fixedly connected to the inner side of the insulating sleeve, a thermal insulation layer is fixedly connected to the inner side of the embedded layer, a clamping block is fixedly connected to the inner side of the thermal insulation layer, a cable gathering groove is provided on the inner side of the clamping block, two wire placement grooves are provided on the inner end of the cable gathering groove, and a plurality of interference blocks are fixedly connected to the inner side of the wire placement groove and the cable gathering groove provided on the clamping block close to the side of the external warehouse.

[0009] Preferably, a cable assembly is fixedly connected to the inner side of the clamping connection assembly; The cable assembly includes a cable protective layer placed inside a cable gathering groove, the inside of the cable protective layer is respectively wrapped with a live wire and a neutral wire, and the live wire and the neutral wire are respectively placed inside two wire placement grooves opened on the clamping block.

[0010] Preferably, the heating assembly includes a thermal resistance coil wound on the inner side of the embedded layer, and the clamping block is provided with an embedding groove penetrating the insulating sleeve, the embedded layer insulation layer and the thermal resistance coil, and a connecting piece is fixedly connected to the inner side of the embedding groove near one end of the clamping block.

[0011] Preferably, the end of the guide piece is in contact with the connecting piece, and the top end of the guide piece is in contact with the rod body and is in contact with the thermal resistance coil.

[0012] Preferably, the length of the abutment block fixedly connected to the inner side of the cable gathering groove is greater than the length of the abutment block fixedly connected to the inner side of the wire placing groove.

[0013] Preferably, one end of the abutment block that fits the live wire is connected to the connecting piece, and one end of the abutment block that fits the neutral wire is connected to one end of the thermal resistance coil.

[0014] By means of the above technical solution, the present invention provides an environmentally friendly self-controlling temperature tracing heating cable, which has at least the following beneficial effects: 1. Due to the setting of the freezing resistance component, the present invention can replace the components to trigger the heating component to operate. The thrust caused by the increase in the volume of water freezing can close the disconnection of the heating component, so that the heating component can achieve a passage, thereby heating the clamping connection component. This triggering method is not only low-cost, but also convenient for later maintenance.

[0015] 2. Due to the provision of the condensate discharge assembly, the present invention can discharge the accumulated water condensed inside the external bin in an environment where the temperature is above zero, thereby preventing the water from accumulating and entering the clamping connection assembly, thereby causing a short circuit in the wires, and also preventing the weight of the entire device from increasing.

[0016] 3. Due to the setting of the clamping connection assembly, the present invention can quickly clamp and fix the cable and the wires of the stripped part of the cable, thereby making the splicing process of the heating cable faster, making the operation difficulty during wire splicing lower, and increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the support spring installation structure of the present invention; Figure 3 It is a schematic diagram of the installation structure of the push plate of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A; Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B; Figure 6 This is a schematic diagram of the windward pipe installation structure of the present invention; Figure 7 It is a schematic diagram of the installation structure of the embedded layer of the present invention; Figure 8 This is a schematic diagram of the connecting piece installation structure of the present invention; Figure 9 It is a schematic diagram of the installation structure of the friction block of the present invention.

[0019] In the figure: 1, external warehouse; 2, fixed limit seat; 3, support baffle; 4, freezing resistance assembly; 41, windward pipe; 42, movable slide; 43, slider; 44, return spring; 45, push plate; 46, folding tube; 47, guide rod; 48, sliding block; 49, extension frame; 410, resistance rod; 411, guide plate; 412, push slider; 5. Condensate discharge assembly; 51. Flip plate; 52. Guide plate; 53. Support plate; 54. Support spring; 6. Clamping connection assembly; 61. Hoop; 62. Insulating sleeve; 63. Embedding layer; 64. Heat insulation layer; 65. Clamping block; 66. Cable collection groove; 67. Wire placement groove; 68. Resistance block; 7. Cable assembly; 71. Cable shield; 72. Live wire; 73. Neutral wire; 8. Heating component; 81. Thermal resistance coil; 82. Embedding groove; 83. Connecting piece. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1 When existing tracing cables are interconnected, the cortex needs to be stripped. However, the stripped cortex will lose its temperature control effect, resulting in the inability to generate heat at the cable connection. In a low-temperature environment, the self-regulating tracing cable at this location will freeze due to rainfall, increasing the gravity of this part of the tracing cable. Over time, there is a risk of breakage at the cable splicing point. If excessive components are used to heat the splicing point, it will increase the difficulty of later maintenance, and complex triggering components will also increase the failure rate. Please refer to Figures 1 - 9 , this embodiment provides an environment-friendly self-regulating tracing cable, which solves the technical problem of the inability to generate heat at the splicing part. The device includes an outer peripheral bin 1 as a support base. One side of the inner side of the outer peripheral bin 1 is fixedly connected with a fixed limit seat 2. One end of the inner side of the outer peripheral bin 1 away from the fixed limit seat 2 is fixedly connected with a support baffle 3. A freezing resistance component 4 is arranged inside the outer peripheral bin 1 to replace the component-triggered heating component to heat the cable connection. One end of the outer peripheral bin 1 is fixedly connected with a clamping connection component 6 for fixing the cable splicing point. A heating component 8 for heating itself is arranged inside the clamping connection component 6. The peeled cables are spliced and fixed by the clamping connection component 6, and the heating component 8 is triggered by the freezing resistance component 4 to heat the peeled cables.

[0022] When existing tracing cables are docked, due to peeling, the splicing point cannot be heated, resulting in the appearance of ice blocks after rain and snow, increasing the weight of the cable. After adding an additional heating coil, generally, relevant components are required to trigger it. However, due to the high cost and short service life of the components, and sometimes the cable needs to be installed at a high place, it is inconvenient for maintenance personnel to repair. To solve such problems, the freezing resistance component 4 is specifically proposed. The freezing resistance component 4 includes three air inlet pipes 41 fixedly connected to the top of the outer peripheral bin 1 at equal intervals. Moving chutes 42 are opened at both ends of the inner side of the outer peripheral bin 1. A slider 43 is slidably connected inside the moving chute 42. A return spring 44 is connected between the slider 43 and the moving chute 42. A push plate 45 is fixedly connected between the two sliders 43. Three folding tubes 46 are connected between the push plate 45 and the support baffle 3 at equal intervals. A number of guide rods 47 are fixedly connected to both sides of the folding tubes 46 at one end of the support baffle 3. A sliding block 48 fixedly connected to both sides of the folding tubes 46 is slidably connected to the outside of the guide rod 47. Extension frames 49 are fixedly connected to the ends of the sliding blocks 48 on both sides of the folding tubes 46 near the push plate 45. A push slider 412 is fixedly connected to the bottom end of the extension frame 49. A contact rod 410 is fixedly connected to the middle of the end of the push plate 45 away from the folding tubes 46. A guide piece 411 is fixedly connected to the end of the contact rod 410.

[0023] During the use of the freezing resistance component 4, water droplets will inevitably exist inside the external bin 1. In order to prevent the water droplets from condensing and accumulating, and finally being frozen to increase the overall weight of the device, a condensate discharge component 5 is specially proposed. The bottom of the external bin 1 is provided with a condensate discharge component 5 for discharging the condensed water inside it. The condensate discharge component 5 includes a flip plate 51 rotatably connected to one side of the bottom of the external bin 1, a guide plate 52 is fixedly connected to the other side of the bottom of the external bin 1, and support plates 53 are fixedly connected to both sides of the bottom of the external bin 1, and a support spring 54 is fixedly connected to the top of the support plate 53.

[0024] In order to make the folding tube 46 lose the thrust on the inclined surface of the flip plate 51, the flip plate 51 can be reset. The bottom end of the push slider 412 is pressed against the inclined surface of the flip plate 51, and the other end of the support spring 54 is connected to the bottom end of the flip plate 51.

[0025] In order to quickly adapt to the ambient temperature and freeze when the ambient temperature is low, a plurality of folding tubes 46 pass through the supporting baffle 3 at one end close to the supporting baffle 3 and extend to the inside of the fixed limiting seat 2 and are respectively connected to the bottom ends of the adjacent windward tubes 41 .

[0026] First, the operator clamps and fixes the heating cable through the clamping connection component 6. After the fixation is completed, the cable is installed. In the later use process, when the weather cools down, the windward tube 41 will first come into contact with the ambient temperature, and then the water inside it will freeze and then be transferred to the folding tube 46 connected to it, so that the water inside the folding tube 46 will also freeze. Since the volume of water will increase after freezing, the folding tube 46 will expand horizontally through the several sliding blocks 48 fixedly connected on both sides of it under the guidance of the guide rod 47. At that time, the folding tube 46 will be supported by the support baffle 3 and push the push plate 45 at its extended end, and the push plate 45 will push it away from the folding When the resistance rod 410 connected to one end of the tube 46 moves, the extension frame 49 connected to the sliding block 48 away from the end of the support baffle 3 will drive the pushing slider 412 connected thereto to move, and the pushing slider 412 will be out of contact with the inclined surface of the flip plate 51. At that time, the supporting spring 54 connected to the bottom end of the external warehouse 1 through the supporting plate 53 will push the flip plate 51 and the guide plate 52 to close, thereby realizing the closure of the external warehouse 1. When there is no ice inside the folding tube 46, the reset pushing slider 412 will resist the flip plate 51, thereby opening the flip plate 51. When the temperature is above zero, dew is easily condensed inside the external warehouse 1, and the opened flip plate 51 is conducive to drainage.

[0027] Example 2 On the basis of Example 1, Example 1 solves the technical problem that the spliced part cannot generate heat, but there is still the problem that the splicing process of the cable conductor is cumbersome. Figures 1 - 9As shown in the figure, the specific implementation process is as follows: The existing tracing cables are very cumbersome during docking. Since the cables are installed at high altitudes, the cumbersome connection process cannot guarantee the safety of maintenance personnel during later maintenance. To solve such problems, a clamping connection component 6 is specifically proposed. The clamping connection component 6 includes hoop rings 61 fixedly connected to both sides of the contact rod 410 at one end of the peripheral housing 1. Two symmetrically arranged insulating sleeves 62 are slidably connected to the inner side of the hoop rings 61. An embedding layer 63 is fixedly connected to the inner side of the insulating sleeves 62. A heat insulation layer 64 is fixedly connected to the inner side of the embedding layer 63. A clamping block 65 is fixedly connected to the inner side of the heat insulation layer 64. A cable gathering groove 66 is formed inside the clamping block 65. Two wire placement grooves 67 are formed at the inner end of the cable gathering groove 66. A number of contact blocks 68 are fixedly connected to both the wire placement groove 67 and the cable gathering groove 66 formed on the clamping block 65 close to the peripheral housing 1 side.

[0028] In order to utilize the power of the wires in the tracing cable to heat the clamping connection component 6. A cable component 7 is fixedly connected to the inner side of the clamping connection component 6. The cable component 7 includes a cable protection layer 71 placed inside the cable gathering groove 66. A live wire 72 and a neutral wire 73 are respectively wrapped inside the cable protection layer 71. The live wire 72 and the neutral wire 73 are respectively placed inside the two wire placement grooves 67 formed on the clamping block 65. The heating component 8 includes a thermal resistance coil 81 wound around the inner side of the embedding layer 63. An embedding groove 82 is formed on the clamping block 65 and penetrates through the insulating sleeve 62, the embedding layer 63, the heat insulation layer 64 and the thermal resistance coil 81. A connecting piece 83 is fixedly connected to the inner side of the embedding groove 82 close to one end of the clamping block 65. The end of the guide piece 411 is in contact with the connecting piece 83. The top of the guide piece 411 is in contact with the thermal resistance coil 81 at the rod body part of the contact rod 410.

[0029] In order to ensure that the cable gathering groove 66 and the wire placement groove 67 can clamp and fix the cables and wires inside. The length of the contact blocks 68 fixedly connected to the inner side of the cable gathering groove 66 is greater than the length of the contact blocks 68 fixedly connected to the inner side of the wire placement groove 67.

[0030] In order to enable the freezing contact component 4 to connect the path of the thermal resistance coil 81. One end of the contact block 68 in contact with the live wire 72 is connected to the connecting piece 83. One end of the contact block 68 in contact with the neutral wire 73 is connected to one end of the thermal resistance coil 81.

[0031] During cable splicing, the operator strips the cable protective layer 71 of the tracing cable, then places the cable protective layer 71 inside the cable gathering groove 66 formed on the clamping block 65. Subsequently, the live wire 72 and the neutral wire 73 connected thereto are placed inside the two wire placement grooves 67 formed on the clamping block 65. Then, the clamping block 65 is closed with another clamping block 65. At this time, the insulating sleeve 62, the embedding layer 63, the heat insulation layer 64 and the thermal resistance coil 81 connected and communicated with the clamping block 65 will also be closed. Then, the hoop 61 is sleeved on both outer ends of the insulating sleeve 62, and then the two hoops 61 are tightened by bolts, so as to realize the clamping and fixing of the cable. During this period, the abutting block 68 fixedly connected in the cable gathering groove 66 and the wire placement groove 67 on the clamping block 65 close to one end of the peripheral device bin 1 will abut against the corresponding cable protective layer 71 or wire, so as to increase the clamping force. During clamping, the abutting rod 410 is slidably connected inside the embedding groove 82. With the operation of the freezing abutting component 4, the abutting rod 410 will drive the conducting piece 411 connected to its end to fit with the communicating piece 83. At this time, the communicating piece 83 will guide the power of the abutting block 68 connected thereto to the live wire 72 to the conducting piece 411, and then transfer it to the thermal resistance coil 81 through the conducting piece 411, and the thermal resistance coil 81 will conduct it to the neutral wire 73 to form a loop. During this period, the thermal resistance coil 81 will generate heat, so as to heat the clamping connection component 6. When the ice inside the folding tube 46 melts, the folding tube 46 will reset, and the abutting rod 410 will drive the conducting piece 411 to separate from the communicating piece 83, so as to disconnect the circuit, thus avoiding continuous heating at this place in hot weather.

[0032] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environment-friendly self-regulating heating cable, comprising a peripheral warehouse (1) serving as a support foundation, characterized in that: On one side inside the peripheral device bin (1), there is a fixed limit seat (2) fixedly connected. At one end inside the peripheral device bin (1) far from the fixed limit seat (2), there is a support baffle (3) fixedly connected. Inside the peripheral device bin (1), there is a freezing contact component (4) that replaces the component to trigger the heating component to heat the cable connection. At one end of the peripheral device bin (1), there is a clamping connection component (6) fixedly connected to fix the cable splicing. Inside the clamping connection component (6), there is a heating component (8) that heats itself. The freezing contact component (4) includes three air inlet pipes (41) fixedly connected at equal intervals to the top end of the peripheral device bin (1). At both ends inside the peripheral device bin (1), there are moving chutes (42) opened. Inside the moving chutes (42), there are sliding blocks (43) slidably connected. Between the sliding blocks (43) and the moving chutes (42), there are return springs (44) connected. Between the two sliding blocks (43), there is a push plate (45) fixedly connected. Between the push plate (45) and the support baffle (3), there are three folding tubes (46) connected at equal intervals. At one end of the support baffle (3) on both sides of the folding tubes (46), there are a number of guide rods (47) fixedly connected at equal intervals. Outside the guide rods (47), there are sliding blocks (48) slidably connected and fixedly connected to both sides of the folding tubes (46). At the end of the sliding blocks (48) on both sides of the folding tubes (46) near the push plate (45), there are extension frames (49) fixedly connected. At the bottom end of the extension frames (49), there are push sliders (412) fixedly connected. In the middle of the end of the push plate (45) far from the folding tubes (46), there is a contact rod (410) fixedly connected. At the end of the contact rod (410), there is a guide piece (411) fixedly connected.

2. The environmentally friendly self-regulating heating cable according to claim 1, wherein: At the bottom end of the peripheral device bin (1), there is a condensate discharge component (5) for discharging the condensate inside it. The condensate discharge component (5) includes a flip plate (51) rotatably connected to one side of the bottom end of the peripheral device bin (1). On the other side of the bottom end of the peripheral device bin (1), there is a diversion plate (52) fixedly connected. On both sides of the bottom end of the peripheral device bin (1), there are support plates (53) fixedly connected. At the top end of the support plates (53), there are support springs (54) fixedly connected.

3. The environmentally friendly self-regulating heating cable according to claim 2, characterized in that: The bottom end of the push slider (412) is in fit with the inclined surface of the flip plate (51). The other end of the support spring (54) is connected to the bottom end of the flip plate (51).

4. An environmentally friendly self-regulating heating cable according to claim 1, characterized in that: One end of several folding tubes (46) near the support baffle (3) penetrates through the support baffle (3) and extends to the inside of the fixed limit seat (2) and is respectively connected to the bottom ends of the adjacent air inlet pipes (41).

5. An environmentally friendly self-regulating heating cable according to claim 1, characterized in that: The clamping connection assembly (6) comprises a hoop (61) fixedly connected to one end of the external compartment (1) and located on both sides of the abutment rod (410); two symmetrical insulating sleeves (62) are slidably connected to the inner side of the hoop (61); an embedding layer (63) is fixedly connected to the inner side of the insulating sleeve (62); a heat insulating layer (64) is fixedly connected to the inner side of the embedding layer (63); a clamping block (65) is fixedly connected to the inner side of the heat insulating layer (64); a cable collection groove (66) is provided on the inner side of the clamping block (65); two wire placement grooves (67) are provided at the inner end of the cable collection groove (66); and a plurality of abutment blocks (68) are fixedly connected to the inner sides of the wire placement groove (67) and the cable collection groove (66) provided on the clamping block (65) on the side close to the external compartment (1).

6. The environmentally friendly self-regulating heating cable according to claim 5, characterized in that: A cable assembly (7) is fixedly connected to the inner side of the clamping connection assembly (6); The cable assembly (7) comprises a cable protective layer (71) placed inside a cable gathering groove (66), the live wire (72) and the neutral wire (73) are respectively wrapped inside the cable protective layer (71), and the live wire (72) and the neutral wire (73) are respectively placed inside two wire placement grooves (67) opened on the clamping block (65).

7. An environmentally friendly self-regulating heating cable according to claim 5, characterized in that: The heating assembly (8) comprises a thermal resistance coil (81) wound on the inner side of the embedding layer (63); the clamping block (65) is provided with an embedding groove (82) penetrating the insulating sleeve (62), the heat insulating layer (64) of the embedding layer (63) and the thermal resistance coil (81); a connecting piece (83) is fixedly connected to the inner side of the embedding groove (82) near one end of the clamping block (65).

8. An environmentally friendly self-controlled temperature tracing cable according to claim 7, characterized in that: The end of the guide piece (411) is in contact with the connecting piece (83), and the top of the guide piece (411) is in contact with the rod body of the rod (410) and is in contact with the thermal resistance coil (81).

9. An environment-friendly self-controlled temperature tracing cable according to claim 5, characterized in that: The length of the abutment block (68) fixedly connected to the inner side of the cable collection groove (66) is greater than the length of the abutment block (68) fixedly connected to the inner side of the wire placement groove (67).

10. An environmentally friendly self-regulating heating cable according to claim 7, characterized in that: One end of the abutment block (68) that fits the live wire (72) is connected to the connecting piece (83), and one end of the abutment block (68) that fits the neutral wire (73) is connected to one end of the thermal resistance coil (81).

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