110kV outdoor sleeve cable terminal without conical cover

Abstract

The utility model discloses a 110kV cone-cover-free outdoor sleeve cable terminal, which comprises a sleeve, a stress cone, a tail pipe, a lead sealing layer and a protection assembly, a cable penetrates through the sleeve, an insulating cavity is formed between the sleeve and the cable, the insulating cavity is filled with insulating oil, the viscosity of the insulating oil is 10000-13000, and the stress cone is arranged on the stress cone. The stress cone is located in the insulation cavity and sleeves the outer side of an insulation shielding fracture of the cable, the tail pipe is arranged at one end of the sleeve and sleeves the metal sheath, the outer sheath is located on the outer side of the side, away from the sleeve, of the tail pipe, and the two ends of the lead sealing layer sleeve the end, away from the sleeve, of the tail pipe and the part, extending out of the tail pipe, of the metal sheath respectively. The lead sealing layer is sleeved with the protection assembly. The cable terminal provided by the utility model is simple in structure and convenient to assemble, can reduce the conditions of cracks of the lead sealing layer and poor contact between the lead sealing layer and the tail pipe or the metal sheath, and also can play a waterproof sealing role.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to an 110kV outdoor sleeve cable terminal without a cone cover. Background Art

[0002] For some cables, such as 110kV high-voltage cables, it is necessary to set a cable terminal at the end of the cable and connect it to an overhead line or other electrical equipment through the cable terminal to improve the electric field distribution and enhance safety. A stress cone will be set on the outer side of the insulation shield break of the cable to improve the electric field distribution and prevent the concentration of electric field stress. Insulating oil will be filled between the sleeve of the cable terminal and the cable to improve the insulation.

[0003] In the prior art, in order to avoid the swelling reaction between the stress cone and the insulating oil, which may lead to a decline in the performance of the stress cone, a stress cone cover is set on the outer side of the stress cone. In this way, the structure of the cable terminal is relatively complex and the assembly is rather troublesome. In addition, a lead seal treatment is carried out between the tail pipe of the cable terminal and the metal sheath of the cable to improve the sealing performance and facilitate the grounding of the metal sheath. However, during long-term use, the lead seal layer is prone to cracks and poor contact with the tail pipe or the metal sheath. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an 110kV outdoor sleeve cable terminal without a cone cover, which does not require the setting of a stress cone cover, has a simpler structure, is more convenient to assemble, and the protection component can play a protective role, reducing the occurrence of cracks in the lead seal layer and poor contact with the tail pipe or the metal sheath. In addition, it can also achieve a waterproof and sealing effect.

[0005] The 110kV outdoor sleeve cable terminal without a cone cover according to an embodiment of the utility model is used for a cable. The cable is provided with a metal sheath and an outer sheath sleeved on the metal sheath. The 110kV outdoor sleeve cable terminal without a cone cover includes a sleeve, a stress cone, a tail pipe, a lead seal layer, and a protection component. The sleeve is for the cable to pass through, an insulating cavity is formed between the sleeve and the cable, insulating oil is filled in the insulating cavity, the viscosity of the insulating oil is 10,000 to 13,000 centistokes, the stress cone is located in the insulating cavity and sleeved on the outer side of the insulation shield break of the cable, the tail pipe is arranged at one end of the sleeve, the tail pipe is sleeved on the metal sheath, the outer sheath is located on the outer side of the side of the tail pipe away from the sleeve, the two ends of the lead seal layer are respectively sleeved on the end of the tail pipe away from the sleeve and the part of the metal sheath extending out of the tail pipe, the protection component is sleeved on the lead seal layer, and the two ends of the protection component extend outside the two ends of the lead seal layer and are respectively sleeved on the tail pipe and the outer sheath.

[0006] The 110 kV outdoor bushing cable terminal without a cone cover according to the embodiment of the present utility model has at least the following beneficial effects:

[0007] An insulating shield break is formed in the part of the cable inside the bushing. The stress cone is sleeved outside the insulating shield break of the cable to improve the electric field stress concentration phenomenon at the insulating shield break. The insulating cavity is filled with insulating oil, which can enhance the insulation effect. At the same time, the viscosity of the insulating oil is 10,000 to 13,000 centistokes, and the viscosity is very high. The high-viscosity insulating oil is not easily swollen with the stress cone, so that the stress cone can maintain better performance, and there is no need to additionally set a stress cone cover to separate the stress cone from the insulating oil, the structure is simpler, and the assembly is more convenient. In addition, a protective component is sleeved outside the lead sealing layer. The two ends of the protective component extend outside the two ends of the lead sealing layer and are respectively sleeved on the tail pipe and the outer sheath. The protective component plays a protective role, can reduce the occurrence of cracks in the lead sealing layer and poor contact with the tail pipe or the metal sheath, and can also play a waterproof and sealing role.

[0008] According to some embodiments of the present utility model, the protective component includes a waterproof layer and a protective pipe. The waterproof layer is sleeved on the lead sealing layer. The two ends of the waterproof layer extend outside the two ends of the lead sealing layer and are respectively sleeved on the tail pipe and the outer sheath. The protective pipe is sleeved on the waterproof layer. The two ends of the protective pipe extend outside the two ends of the waterproof layer and are respectively sleeved on the tail pipe and the outer sheath.

[0009] According to some embodiments of the present utility model, the protective component further includes two fasteners. The two fasteners are respectively sleeved on the two ends of the protective pipe. The two fasteners are used to squeeze the outer side walls of the two ends of the protective pipe, so that the two ends of the protective pipe are respectively tightly attached to the tail pipe and the outer sheath.

[0010] According to some embodiments of the present utility model, the fastener includes a fastening sleeve and a pressing sleeve. The fastening sleeve is sleeved on the protective pipe. The fastening sleeve includes a threaded section and a locking section. The pressing sleeve is sleeved on the fastening sleeve. The pressing sleeve includes a connecting section and a pressing section. The connecting section is threadedly connected to the threaded section. Wherein, the connecting section can be rotated to make the pressing section press the outer side wall of the locking section, so that the locking section deforms inwards to press the outer side wall of the protective pipe.

[0011] According to some embodiments of the present utility model, the outer diameter of the locking section gradually increases in the direction away from the threaded section, and the inner diameter of the pressing section gradually increases in the direction away from the connecting section.

[0012] According to some embodiments of the present utility model, the 110 kV outdoor sleeve cable terminal without a taper cover further includes a terminal post, the terminal post penetrates through one end of the sleeve away from the tail pipe, a jack is provided at one end of the terminal post close to the sleeve, and the cable is inserted into the jack.

[0013] According to some embodiments of the present utility model, a sealing layer is coated on the outside of the connection position between the terminal post and the cable.

[0014] According to some embodiments of the present utility model, the 110 kV outdoor sleeve cable terminal without a taper cover further includes an outgoing line fitting, and the outgoing line fitting is rotatably connected to one end of the terminal post away from the cable.

[0015] According to some embodiments of the present utility model, the 110 kV outdoor sleeve cable terminal without a taper cover further includes a shielding cover, the shielding cover is arranged at one end of the sleeve away from the tail pipe, and the terminal post penetrates through the shielding cover.

[0016] According to some embodiments of the present utility model, the stress cone is made of silicone rubber, and the insulating oil is silicone oil.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, some advantages will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0019] Figure 1 is a schematic structural diagram of the 110 kV outdoor sleeve cable terminal without a taper cover according to an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 an enlarged view of part A in;

[0021] Figure 3 is Figure 1 an enlarged view of part B in;

[0022] Figure 4 is Figure 2 a schematic structural diagram of the fastener in;

[0023] Figure 5 is Figure 4 a cross-sectional view of.

[0024] Reference Numerals in the Drawings:

[0025] Sleeve 100; Insulation cavity 101; Insulating oil 102; Umbrella skirt 103;

[0026] Stress cone 200;

[0027] liner 300;

[0028] sealing lead layer 400;

[0029] protection component 500; waterproof layer 501; protection pipe 502; fastener 503; fastening sleeve 504; threaded section 505; locking section 506; extrusion sleeve 507; connection section 508; extrusion section 509;

[0030] terminal 600; jack 601; sealing layer 602;

[0031] outlet fitting 700;

[0032] shielding cover 800;

[0033] cable 900; metal sheath 901; outer sheath 902; insulating shield break 903; conductor 904;

[0034] mounting flange 1000;

[0035] support insulator 1100. Detailed implementation manners

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0038] In the description of the present utility model, "a plurality of" refers to two or more. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0039] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0040] Below refer toFigures 1 to 5 Describe the 110kV outdoor bushing cable terminal without a conical cover according to an embodiment of the present invention.

[0041] Reference Figures 1 to 5 As shown, the 110kV outdoor bushing cable terminal without a conical cover according to an embodiment of the present invention is used for the cable 900. The cable 900 is provided with a metal sheath 901 and an outer sheath 902 sleeved on the metal sheath 901. Specifically, taking a 110kV high-voltage cable as an example, it may include a conductor 904, a conductor shield, an insulating sleeve, an insulating shield, a water-blocking buffer layer, a metal sheath 901, and an outer sheath 902 sleeved from the inside to the outside in sequence.

[0042] The 110kV outdoor bushing cable terminal without a conical cover includes a bushing 100, a stress cone 200, a tail pipe 300, a sealing lead layer 400, and a protection component 500.

[0043] Among them, the bushing 100 is for the cable 900 to pass through. For example, it can be for the insulating shield of the cable 900 and the structures inside it to pass through. An insulating cavity 101 is formed between the bushing 100 and the cable 900. For example, the insulating cavity 101 can be formed between the inner wall of the bushing 100 and the outer side wall of the insulating sleeve of the cable 900. The insulating cavity 101 is filled with insulating oil 102. The viscosity of the insulating oil 102 is from 10,000 centistokes to 13,000 centistokes. For example, the viscosity of the insulating oil 102 can be 10,000 centistokes, 11,000 centistokes, 12,000 centistokes, 13,000 centistokes, or other suitable viscosities. The insulating oil 102 with a viscosity of 10,000 centistokes to 13,000 centistokes is a high-viscosity insulating oil 102 and is difficult to have a swelling reaction with the stress cone 200. The insulating oil 102 is made of an electrically insulating material, and the insulating oil 102 plays a role in strengthening electrical insulation.

[0044] The stress cone 200 is located in the insulating cavity 101 and sleeved on the outside of the insulating shield break 903 of the insulating shield of the cable 900. The stress cone 200 can improve the electric field distribution at the insulating shield break 903 and prevent electric field stress concentration. The stress cone 200 is a common component of the cable terminal, and its structure and working principle will not be elaborated here.

[0045] The tail pipe 300 is arranged at one end of the bushing 100. Specifically, it can be arranged at the end of the bushing 100 close to the low-voltage side of the cable terminal, that is, the end far from the terminal post 600. The tail pipe 300 is sleeved on the metal sheath 901, and the tail pipe 300 is used to protect the cable 900. The outer sheath 902 is located on the outside of the end of the tail pipe 300 far from the bushing 100. For example, the outermost part of the part of the cable 900 passing through the tail pipe 300 can be the metal sheath 901. Along the axial direction of the metal sheath 901, there is a gap between the tail pipe 300 and the outer sheath 902.

[0046] One end of the lead-sealing layer 400 is sleeved on one end of the tail pipe 300 away from the casing 100, and the other end is sleeved on the part of the metal sheath 901 extending out of the tail pipe 300, that is, the part of the metal sheath 901 between the tail pipe 300 and the outer sheath 902. The lead-sealing layer 400 plays a sealing role, and in addition, it can electrically connect the tail pipe 300 and the metal sheath 901. Furthermore, during actual use, by grounding the tail pipe 300, the metal sheath 901 can be indirectly grounded to eliminate the induced voltage on the metal sheath 901, and the safety is better. It should be noted that lead-sealing treatment generally refers to heating and coating a lead-tin alloy, so the lead-sealing layer 400 can be composed of a lead-tin alloy.

[0047] The protection component 500 is sleeved on the lead-sealing layer 400, and both ends of the protection component 500 extend outside both ends of the lead-sealing layer 400 and are respectively sleeved on the tail pipe 300 and the outer sheath 902.

[0048] In this embodiment, an insulation shielding break 903 is formed in the part of the cable 900 inside the casing 100. The stress cone 200 is sleeved on the outside of the insulation shielding break 903 of the cable 900, which can improve the electric field concentration phenomenon of the insulation shielding break 903. The insulation cavity 101 is filled with insulating oil 102, which can enhance the insulation effect. At the same time, the viscosity of the insulating oil 102 is 10,000 to 13,000 centistokes, and the viscosity is very high. The high-viscosity insulating oil 102 is not easy to have a swelling reaction with the stress cone 200, so that the stress cone 200 can maintain better performance without additionally setting a stress cone cover to separate the stress cone 200 from the insulating oil 102, and the structure is simpler and the assembly is more convenient. In addition, a protection component 500 is sleeved on the outside of the lead-sealing layer 400. Both ends of the protection component 500 extend outside both ends of the lead-sealing layer 400 and are respectively sleeved on the tail pipe 300 and the outer sheath 902. The protection component 500 plays a protection role, can reduce the occurrence of cracks in the lead-sealing layer 400 and the situation of poor contact with the tail pipe 300 or the metal sheath 901, and can also play a waterproof sealing role.

[0049] In some embodiments of the present invention, such as Figure 2As shown, the protection component 500 includes a waterproof layer 501 and a protection tube 502. The waterproof layer 501 is sleeved on the sealing lead layer 400. Both ends of the waterproof layer 501 extend outside both ends of the sealing lead layer 400 and are respectively sleeved on the tail tube 300 and the outer sheath 902. The protection tube 502 is sleeved on the waterproof layer 501. Both ends of the protection tube 502 extend outside both ends of the waterproof layer 501 and are respectively sleeved on the tail tube 300 and the outer sheath 902. The waterproof layer 501 can be made of waterproof tape or waterproof glue. By setting the waterproof layer 501, it can further achieve the effect of sealing and waterproofing, and can also reduce the occurrence of cracks in the sealing lead layer 400 and the poor contact with the tail tube 300 or the metal sheath 901. The protection tube 502 can be a heat-shrinkable tube or other types of tube bodies. The protection tube 502 can play a protective role, and thus can protect the waterproof layer 501 and the sealing lead layer 400, reducing damage to the waterproof layer 501 and the sealing lead layer 400. In addition, by pressing the sealing lead layer 400, the protection tube 502 can further reduce the occurrence of cracks in the sealing lead layer 400 and the poor contact with the tail tube 300 or the metal sheath 901.

[0050] It should be noted that in some other embodiments of the present invention, the protection component 500 can also be other structures. For example, only the protection tube 502 is provided.

[0051] In some embodiments of the present invention, as Figure 2 、 Figure 4 and Figure 5 shown, the protection component 500 further includes two fasteners 503. The two fasteners 503 are respectively sleeved on both ends of the protection tube 502. The two fasteners 503 are used to squeeze the outer side walls of both ends of the protection tube 502, so that both ends of the protection tube 502 are respectively closely attached to the tail tube 300 and the outer sheath 902.

[0052] In this embodiment, by sleeving the fasteners 503 on both ends of the protection tube 502, the two fasteners 503 can squeeze the outer side walls of both ends of the protection tube 502, so that both ends of the protection tube 502 are respectively closely attached to the tail tube 300 and the outer sheath 902. In this way, not only the sealing and waterproofing effect is better, but also the connection of the protection tube 502 is more firm.

[0053] In some embodiments of the present invention, as Figure 2 、 Figure 4 and Figure 5As shown, the fastener 503 includes a fastening sleeve 504 and an extrusion sleeve 507. The fastening sleeve 504 is sleeved on the protective tube 502. The fastening sleeve 504 includes a threaded section 505 and a locking section 506. The locking section 506 can be connected to one axial end of the threaded section 505 and be coaxial with the threaded section 505. An external thread can be provided on the outer sidewall of the threaded section 505. The extrusion sleeve 507 is sleeved on the fastening sleeve 504. The extrusion sleeve 507 includes a connecting section 508 and an extrusion section 509. The extrusion section 509 can be connected to one axial end of the connecting section 508 and be coaxial with the connecting section 508. An internal thread can be provided on the inner sidewall of the connecting section 508. The connecting section 508 is threadedly connected to the threaded section 505 through the cooperation of the internal thread and the external thread. When the connecting section 508 rotates, it can drive the extrusion section 509 to move along the axial direction of the threaded section 505. When the extrusion section 509 moves to the outside of the locking section 506 and abuts against the outer sidewall of the locking section 506, it can extrude the outer sidewall of the locking section 506, causing the locking section 506 to deform inward and squeeze the outer sidewall of the protective tube 502. The outer sidewall of the protective tube 502 is squeezed, so that it can closely adhere to the tail pipe 300 and the outer sheath 902.

[0054] In some embodiments of the present utility model, as Figure 4 and Figure 5 shown, the outer diameter of the locking section 506 gradually increases in the direction away from the threaded section 505, and the inner diameter of the extrusion section 509 gradually increases in the direction away from the connecting section 508. With such a setting, when the connecting section 508 rotates to drive the extrusion section 509 to move, it is more convenient for the extrusion section 509 to move to the outside of the locking section 506 and abut against the outer sidewall of the locking section 506. At the same time, it is more convenient for the extrusion section 509 to move away from the outside of the locking section 506, and it is more convenient to use.

[0055] In some embodiments of the present utility model, as Figure 1 and Figure 3 shown, the 110 kV outdoor cable terminal without a cone cover further includes a terminal post 600. The terminal post 600 penetrates through one end of the sleeve 100 away from the tail pipe 300. A jack 601 is provided at one end of the terminal post 600 close to the sleeve 100. The cable 900 is inserted into the jack 601. Specifically, the terminal post 600 is made of a conductive material. One end of the terminal post 600 can be located in the insulating cavity 101, and the other end can extend outside the sleeve 100. One end of the cable 900 close to the terminal post 600 can only retain the conductor 904 and be inserted into the jack 601 of the terminal post 600 through the conductor 904. In this embodiment, by providing the terminal post 600, it is more convenient to connect the cable 900 to an overhead line or other electrical equipment. The terminal post 600 is provided with a jack 601 and is inserted into the conductor 904 of the cable 900 through the jack 601, making the connection more convenient.

[0056] In some embodiments of the present utility model, asFigure 3 As shown, a sealing layer 602 is coated on the outer side of the connection position between the terminal post 600 and the cable 900. The sealing layer 602 can be made of a sealing tape or a sealant. In this embodiment, setting the sealing layer 602 can play a sealing role to prevent the insulating oil 102 in the insulating cavity 101 from entering the core of the conductor 904 of the cable 900 through the gap between the terminal post 600 and the cable 900, thereby damaging the core and affecting the power transmission.

[0057] In some embodiments of the present utility model, as Figure 1 shown, the 110 kV outdoor bushing cable terminal without a taper cover further includes an outgoing line fitting 700, and the outgoing line fitting 700 is rotatably connected to one end of the terminal post 600 away from the cable 900. The outgoing line fitting 700 is used to connect to an overhead line or other electrical equipment. The outgoing line fitting 700 is rotatable, so that it is more convenient to connect to the overhead line or other electrical equipment.

[0058] In some embodiments of the present utility model, as Figure 1 shown, the 110 kV outdoor bushing cable terminal without a taper cover further includes a shielding cover 800. The shielding cover 800 is provided at one end of the bushing 100 away from the tail pipe 300, and the terminal post 600 passes through the shielding cover 800. Setting the shielding cover 800 can shield the tip inside the high-voltage side of the cable terminal to avoid corona or discharge. At the same time, different colors can be painted on the shielding cover 800 to distinguish the phase sequence of the cable 900.

[0059] In some embodiments of the present utility model, the stress cone 200 is made of silicone rubber, and the insulating oil 102 is silicone oil. In this way, it can further avoid the swelling reaction between the stress cone 200 and the insulating oil 102.

[0060] In some embodiments of the present utility model, as Figure 1 shown, a plurality of umbrella skirts 103 are provided on the outer side wall of the bushing 100, and the plurality of umbrella skirts 103 can be arranged along the axial direction of the bushing 100. In this embodiment, setting the plurality of umbrella skirts 103 can further improve the insulation performance of the bushing 100, and can also increase the creepage distance along the surface from the high-voltage side to the low-voltage side of the cable terminal, with better safety.

[0061] In some embodiments of the present utility model, as Figure 1As shown in the figure, the 110 kV outdoor bushing cable terminal without a cone cover further includes a mounting flange 1000 and a plurality of support insulators 1100. The bushing 100 and the tail pipe 300 are respectively connected to both sides of the mounting flange 1000 in the thickness direction, and the plurality of support insulators 1100 are arranged on the mounting flange 1000. In this embodiment, by providing the mounting flange 1000, it is more convenient to install the cable terminal on an external support. By providing the support insulators 1100, the electric field on the cable terminal can be isolated from the external electric field, preventing the external electric field from affecting the operation of the cable terminal.

[0062] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A 110kV outdoor bushing cable terminal without cone cover, used for a cable, wherein the cable is provided with a metal sheath and an outer sheath sleeved on the metal sheath, characterized in that: The 110kV cone-free outdoor bushing cable terminal comprises: A bushing for the cable to pass through, an insulating cavity is formed between the bushing and the cable, the insulating cavity is filled with insulating oil, and the viscosity of the insulating oil is 10000 viscosity to 13000 viscosity; A stress cone is located in the insulation cavity and sleeved on the outer side of the insulation shielding fracture of the cable; A tail pipe is arranged at one end of the sleeve, the tail pipe is sleeved in the metal sleeve, and the outer sleeve is located outside the end of the tail pipe away from the sleeve; A sealing lead layer, the two ends of which are respectively sleeved on an end of the tail pipe away from the sleeve and a portion of the metal sheath extending out of the tail pipe; A protective component is sleeved on the lead sealing layer, and two ends of the protective component extend outside the two ends of the lead sealing layer and are respectively sleeved on the tail pipe and the outer sheath.

2. The 110kV outdoor bushing cable terminal without cone cover according to claim 1 is characterized in that: The protection component comprises: A waterproof layer, which is sleeved on the lead sealing layer, and two ends of the waterproof layer extend outside the two ends of the lead sealing layer and are respectively sleeved on the tail pipe and the outer sheath; A protective tube is sleeved on the waterproof layer, and two ends of the protective tube extend outside the two ends of the waterproof layer and are respectively sleeved on the tail pipe and the outer sheath.

3. The 110kV outdoor bushing cable terminal without cone cover according to claim 2 is characterized in that: The protection component also includes: Two fasteners are respectively sleeved on the two ends of the protection tube, and the two fasteners are used to squeeze the outer side walls of the two ends of the protection tube so that the two ends of the protection tube are respectively close to the tail pipe and the outer sheath.

4. The 110kV outdoor bushing cable terminal without cone cover according to claim 3 is characterized in that: The fastener comprises: A fastening sleeve, which is sleeved on the protection tube, and the fastening sleeve comprises a threaded section and a locking section; An extrusion sleeve, which is sleeved on the fastening sleeve, and the extrusion sleeve comprises a connecting section and an extrusion section, and the connecting section is threadedly connected with the threaded section; The connecting section can be rotated to make the extruding section squeeze the outer side wall of the locking section, so that the locking section deforms inwards and squeezes the outer side wall of the protective tube.

5. The 110kV outdoor bushing cable terminal without cone cover according to claim 4 is characterized in that: The outer diameter of the locking section gradually increases in a direction away from the threaded section, and the inner diameter of the extrusion section gradually increases in a direction away from the connecting section.

6. The 110 kV outdoor bushing cable terminal without cone cover according to any one of claims 1 to 5, characterized in that: The 110kV cone-free outdoor bushing cable terminal also includes: A terminal is passed through an end of the sleeve away from the tail pipe, and an insertion hole is provided at an end of the terminal close to the sleeve, and the cable is inserted into the insertion hole.

7. The 110kV outdoor bushing cable terminal without cone cover according to claim 6, characterized in that: The outer side of the connection position between the terminal and the cable is covered with a sealing layer.

8. The 110kV outdoor bushing cable terminal without cone cover according to claim 6, characterized in that: The 110kV cone-free outdoor bushing cable terminal also includes: The outlet fitting is rotatably connected to the end of the terminal away from the cable.

9. The 110kV outdoor bushing cable terminal without cone cover according to claim 6, characterized in that: The 110kV cone-free outdoor bushing cable terminal also includes: A shielding cover is arranged at one end of the sleeve away from the tail pipe, and the terminal is passed through the shielding cover.

10. The 110 kV outdoor bushing cable terminal without cone cover according to any one of claims 1 to 5, characterized in that: The stress cone is made of silicone rubber, and the insulating oil is silicone oil.

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