Cable outdoor terminal capable of balancing internal pressure

Abstract

The invention discloses a cable outdoor terminal capable of balancing internal pressure, and particularly relates to the technical field of cable terminals.The cable outdoor terminal comprises a terminal body, a cable body is fixedly connected to the interior of the terminal body, the cable body is sleeved with an insulating layer, and the cable is sleeved with a semi-conduction band. Through cooperation of the base, the threaded through hole and the positioning bolt, accurate positioning and firm installation of the terminal main body are realized, various possible influences of an external environment on the cable terminal are effectively resisted, stable operation of a whole cable system is guaranteed, efficient assembly of the cable terminal is facilitated, the internal structure is simplified, and the cost is reduced. Therefore, the time required for assembly is greatly shortened, the construction operation is more convenient, the consumption of manpower and material resources is remarkably reduced, the waste of resources is effectively avoided, the installation efficiency of the cable terminal is improved, and more economic and faster use experience is brought to users.

Description

Technical Field

[0001] The present invention relates to the technical field of cable terminals, and more particularly to an outdoor cable terminal capable of balancing internal pressure. Background Art

[0002] The cable terminal is mainly composed of the cable and its external casing. In order to connect the conductive terminal at the end of the cable, the cable insulation layer in the casing needs to be stripped. At the same time, to ensure that the insulation performance of the cable is not affected, the gap between the cable and the casing is filled with insulating material. The construction of the cable terminal is a complex and delicate process. Each step is crucial and together constitutes the basis for the safe, efficient and stable operation of the cable terminal.

[0003] In the existing cable terminal assembly process, due to its complex internal structure, construction workers need to spend a lot of time to assemble it, resulting in a significant waste of manpower and material resources.

[0004] Therefore, in order to solve the above problems, an outdoor cable terminal capable of balancing internal pressure is proposed. Summary of the invention

[0005] In order to overcome the above defects of the prior art, the present invention provides an outdoor cable terminal capable of balancing internal pressure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cable outdoor terminal with balanced internal pressure, comprising a terminal body, a cable body is fixedly connected to the inside of the terminal body, an insulating layer is provided on the outside of the cable body, a semi-conductive tape is provided on the outside of the cable, the semi-conductive tape is located directly below the insulating layer, a stress cone is provided at the bottom of the semi-conductive tape, the stress cone is sleeved on the outside of the cable body, the cable body extends to the bottom of the terminal body, a tail line extends from the bottom of the cable body, a base is fixedly connected to the bottom of the terminal body, threaded holes are provided on the upper side of the base, and positioning bolts are installed on the internal threads of the threaded holes.

[0007] Preferably, a silicone self-adhesive tape is sleeved on the outer side of the cable body, and the silicone self-adhesive tape is located directly below the stress cone.

[0008] Preferably, an insulating tube is sleeved on the outer side of the cable body, and the cable body passes through the insulating tube and extends to the bottom of the insulating tube.

[0009] Preferably, a wiring terminal is fixedly connected to the top of the terminal body, and the cable body passes through the wiring terminal and extends to the outside of the terminal body.

[0010] Preferably, a first sealing ring is detachably mounted on the top of the terminal body, and the bottom of the first sealing ring is in close contact with the top of the terminal body.

[0011] Preferably, a shielding cover is fixedly installed on the top of the terminal body, the shielding cover is sleeved on the outside of the cable body, a through hole is opened on the top of the shielding cover, a second sealing ring is fixedly installed inside the through hole, and the inside of the second sealing ring contacts the outer wall of the cable body.

[0012] Preferably, a fastening bolt is threadedly mounted on the upper side of the shielding cover, and the terminal body and the shielding cover are positioned by the fastening bolt.

[0013] Preferably, an outer sleeve is provided on the outer side of the tail line, a grounding wire is fixedly connected to the right side of the outer sleeve, and a grounding sleeve is provided on the outer side of the grounding wire.

[0014] Preferably, the fastening bolts and the positioning bolts are made of cast steel.

[0015] Preferably, support insulators are evenly installed on the bottom of the base.

[0016] Technical effects and advantages of the present invention: Compared with the prior art, this outdoor cable terminal with balanced internal pressure effectively isolates the conductor inside the cable body from the external environment or adjacent conductors by setting an insulating layer on the outside of the cable body. A semiconductor tape is used inside the high-voltage cable to balance the electric field distribution and optimize the electrical environment inside the cable. The stress cone is set for special consideration of the electric field distribution of the cable terminal and the joint part, which facilitates the efficient assembly of the cable terminal and simplifies its internal structure, thereby greatly shortening the time required for assembly, making construction operations more convenient, and significantly reducing the consumption of manpower and material resources, effectively avoiding the waste of resources, and improving the installation efficiency of the cable terminal, bringing users a more economical and quick use experience.

[0017] Compared with the existing technology, this outdoor cable terminal with balanced internal pressure can achieve precise positioning and firm installation of the terminal body through the cooperation of the base, threaded through holes and positioning bolts at the bottom of the terminal body. It not only ensures that the cable terminal can be stably connected to the designated power system, but also effectively resists various influences of the external environment on the cable terminal through the tightening effect of the positioning bolts, thereby ensuring the stable operation of the entire cable system. These designed components and processes together constitute an important cornerstone for the safe and efficient operation of the cable system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 It is a front view structural schematic diagram of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of A.

[0022] Figure 5 Schematic diagram of the connection structure between the cable body and the insulation layer of the present invention The accompanying drawings are marked as follows: 1. terminal body; 2. cable body; 3. insulation layer; 4. semiconductor tape; 5. stress cone; 6. silicone self-adhesive tape; 7. insulating tube; 8. tail wire; 9. outer sheath; 10. terminal; 11. first sealing ring; 12. shielding cover; 13. second sealing ring; 14. fastening bolt; 15. grounding wire; 16. grounding sleeve; 17. base; 18. threaded through hole; 19. positioning bolt; 20. pillar insulator. DETAILED DESCRIPTION

[0023] 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. Example

[0024] As attached Figures 1 to 5 A cable outdoor terminal with balanced internal pressure shown in the figure includes a terminal body 1, a cable body 2 is fixedly connected to the inside of the terminal body 1, an insulating layer 3 is sleeved on the outside of the cable body 2, a semi-conductive tape 4 is sleeved on the outside of the cable body 2, the semi-conductive tape 4 is located directly below the insulating layer 3, a stress cone 5 is provided at the bottom of the semi-conductive tape 4, the stress cone 5 is sleeved on the outside of the cable body 2, the cable body 2 extends to the bottom of the terminal body 1, a tail line 8 extends from the bottom of the cable body 2, a base 17 is fixedly connected to the bottom of the terminal body 1, a threaded through hole 18 is opened on the upper side of the base 17, and a positioning bolt 19 is installed on the internal thread of the threaded through hole 18.

[0025] Among them: by providing an insulating layer 3 on the outside of the cable body 2, a crucial safety barrier is constructed, which not only effectively isolates the conductors inside the cable body 2 from the external environment or adjacent conductors, and achieves mutual insulation, but also ensures that the cable core, the core component of current transmission, can work in a safe and stable environment. If the exposed wires are not protected, it is very easy to cause equipment failure due to short circuit, and even pose a potential threat to personnel exceeding the safe voltage. Therefore, the existence of the insulating layer 3 is the first line of defense to prevent these risks from occurring. It protects the stable operation of the power system and the safety of personnel. Furthermore, high A semiconductor tape 4 is used inside the pressure cable to balance the electric field distribution and optimize the electrical environment inside the cable. A shielding layer is formed by covering the surface of the conductor with a layer of semi-conductive material. The shielding layer maintains the same potential as the shielded conductor and contacts the insulating layer 3, thereby avoiding the risk of local discharge at the interface between the conductor and the insulating layer 3, and effectively improving the insulation performance and operation reliability of the cable. In addition, the stress cone 5 is set as a special consideration for the electric field distribution of the cable terminal and the joint part. At the end of the metal sheath, the electric field distribution is often more concentrated, and the electric field strength at the edge is higher, which may pose a challenge to the insulation performance of the cable. The stress cone 5 forms a gradually transitioning cone structure by wrapping the insulating tape starting from the edge of the metal sheath. This structure not only improves the electric field distribution at the end of the metal sheath, but also significantly reduces the electric field strength at the edge, thereby enhancing the insulation strength and durability of the cable terminal and the joint. Finally, at the bottom of the terminal body 1, through the cooperation of the base 17, the threaded through hole 18 and the positioning bolt 19, we achieve the precise positioning and firm installation of the terminal body 1, which not only ensures that the cable terminal can be stably connected to the specified power system, but also through the tightening effect of the positioning bolt 19, effectively resists various possible influences of the external environment on the cable terminal, and ensures the stable operation of the entire cable system. In order to facilitate the efficient assembly of the cable terminal, its internal structure is simplified, thereby greatly shortening the time required for assembly, making the construction operation more convenient, and significantly reducing the consumption of manpower and material resources, effectively avoiding the waste of resources, and improving the installation efficiency of the cable terminal, bringing users a more economical and quick use experience. Example

[0026] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 5 As shown, see the following description for details: As a preferred embodiment, the outer side of the cable body 2 is provided with a silicone self-adhesive tape 6, and the silicone self-adhesive tape 6 is located directly below the stress cone 5; further, a silicone self-adhesive tape 6 is provided on the outer side of the cable body 2, and the cable has high temperature resistance, so that it can operate stably in various high temperature environments, greatly improving the safety and service life of the cable, and playing a key role in electrostatic shielding. Electrostatic shielding can effectively prevent external electrostatic interference from affecting the internal signal transmission of the cable, ensuring the accuracy and stability of data transmission. The silicone self-adhesive tape 6 is located between the outer sheath of the cable and the polyethylene core sheath, forming an excellent hierarchical structure that is both protective and isolating, tightly wrapping and firmly adhering to the polyethylene core sheath, which not only provides the necessary physical protection, but also ensures the overall stability of the cable structure, further enhancing the durability and reliability of the cable. In short, the addition of the silicone self-adhesive tape 6 not only improves the comprehensive performance of the cable from multiple dimensions, but also provides strong support for its application in various complex environments. It is an indispensable and important part of modern cable manufacturing.

[0027] As a preferred embodiment, an insulating tube 7 is provided on the outer side of the cable body 2, and the cable body 2 passes through the insulating tube 7 and extends to the bottom of the insulating tube 7; further, through the installation of the insulating tube 7, the cable core and the ground as well as the cores of different phases are strictly electrically isolated from each other. The principle is based on the basic needs of electrical safety to ensure that no breakdown short circuit occurs during the transmission of electric energy. The insulating tube 7, as a key component in the cable structure, usually adopts materials with high insulation performance, has excellent electrical insulation, heat resistance and mechanical strength, and can maintain stable insulation performance under various harsh environmental conditions.

[0028] As a preferred embodiment, a terminal block 10 is fixedly connected to the top of the terminal body 1, and the cable body 2 passes through the terminal block 10 and extends to the outside of the terminal body 1; further, by setting the terminal block 10, its role is particularly important when cables and wires are connected to electrical equipment. In general, it is a key hardware for achieving reliable connection between low-voltage cables, wires and electrical equipment. The design of the terminal block 10 takes into account the stability, safety and convenience of the electrical connection, ensuring that the current can pass smoothly and losslessly, while preventing electrical failures and safety hazards caused by poor contact or looseness. In the electrical system, one end of the terminal block 10 is firmly connected to the conductor of the cable or wire, and the other end is closely connected to the terminal post of the electrical equipment, ensuring the continuity of the electrical connection, facilitating the installation, replacement and maintenance of cables and wires, and improving work efficiency. The terminal block 10 also has excellent electrical conductivity and corrosion resistance, and can maintain a stable electrical connection in various harsh environments. Its surface is usually treated with tin plating, silver plating and other processes to improve electrical conductivity and oxidation resistance to ensure long-term reliability of the electrical connection.

[0029] As a preferred embodiment, a first sealing ring 11 is detachably installed on the top of the terminal body 1, and the bottom of the first sealing ring 11 is in close contact with the top of the terminal body 1; further, by setting the first sealing ring 11 and selecting a rubber material, a vital role is played in tightly connecting the terminal body 1 and the shielding cover 12. The first sealing ring 11 made of rubber can form a reliable sealing barrier at the connection part due to its excellent elasticity and sealing performance, effectively preventing external environmental factors such as moisture, dust and harmful gases from invading the interior of the cable terminal, thereby protecting the cable and its internal components from erosion and damage. The sealing ring can not only provide static sealing The rubber material also gives the first sealing ring 11 good weather resistance and aging resistance, and can maintain its physical properties and sealing effect under a variety of harsh environmental conditions, thus extending the service life of the cable terminal. Therefore, the rubber material selection of the first sealing ring 11 not only meets the basic requirements of the cable terminal for sealing performance, but also provides a strong guarantee for the reliability and safety of the cable terminal through its excellent material properties. This design detail reflects the in-depth consideration and fine processing of the cable terminal structure and performance optimization.

[0030] As a preferred embodiment, a shielding cover 12 is fixedly installed on the top of the terminal body 1, and the shielding cover 12 is sleeved on the outside of the cable body 2. A through hole is opened on the top of the shielding cover 12, and a second sealing ring 13 is fixedly installed inside the through hole, and the inside of the second sealing ring 13 is in contact with the outer wall of the cable body 2; further, by installing the shielding cover 12, the overall performance and safety of the power cable system are improved. Since the current transmitted by the power cable is usually large, according to the principle of electromagnetics, a strong magnetic field will be generated around the large current. If these magnetic fields are not properly handled, they may cause electromagnetic interference to the surrounding electronic equipment, communication lines and other electrical components, affecting their normal operation. Therefore, the addition of the shielding cover 12, its core function is to effectively shield the electromagnetic field generated inside the cable by constructing a continuous conductive shielding layer to prevent it from causing adverse effects on the external environment. The shielding cover 12 not only plays the role of electromagnetic shielding, but also has a certain grounding protection function. During the manufacturing and installation of the cable, the shielding cover 12 is usually closely connected to the shielding layer of the cable and reliably grounded. In this way, if the cable core is damaged for some reason, resulting in current leakage, the leaked current can quickly flow into the grounding grid along the shielding layer instead of directly flowing to the surrounding equipment or human body, thereby effectively avoiding the risk of electric shock accidents and electrical fires, and providing additional safety guarantees for the safe operation of the power system. In addition, the design of the shielding cover 12 also takes into account the overall mechanical strength and protection level of the cable system. It can prevent the intrusion of harmful substances such as moisture and dust through its good sealing performance, further extending the service life and maintenance cycle of the cable. The installation of the shielding cover 12 is an indispensable part of the power cable system. It provides solid guarantees for the safe and reliable operation of the cable system through multiple functions such as electromagnetic shielding, grounding protection and enhanced mechanical strength.

[0031] As a preferred embodiment, the upper side of the shielding cover 12 is threadedly installed with fastening bolts 14, and the terminal body 1 and the shielding cover 12 are positioned by the fastening bolts 14; further, fastening bolts 14 are arranged at the bottom of the shielding cover 12, and these bolts not only bear the important task of firmly connecting the terminal body 1 and the shielding cover 12, but also the spacing of the fastening bolts 14 is set to be the same, which plays a vital positioning role in practical applications. The fastening bolts 14 with the same spacing ensure the precise alignment of the terminal body 1 and the shielding cover 12 during the connection process, and avoid problems such as loose connection or poor sealing due to installation deviation, thereby improving the accuracy and efficiency of the cable terminal assembly and ensuring the stability and reliability of the cable terminal in long-term operation. In short, the fastening bolts 14 with the same spacing arranged at the bottom of the shielding cover 12 realize the firm connection between the terminal body 1 and the shielding cover 12, and through its positioning function, provide more reliable and stable guarantees for the assembly and operation of the cable terminal, fully demonstrating the high attention paid to accuracy, reliability and durability in the design and manufacturing process of the cable terminal.

[0032] As a preferred embodiment, the outer side of the tail line 8 is provided with an outer sheath 9, the right side of the outer sheath 9 is fixedly connected with a grounding wire 15, and the outer side of the grounding wire 15 is provided with a grounding sleeve 16; further, by arranging the outer sheath 9 on the outer side of the tail line 8, the outer surface of the tail line 8 is effectively and comprehensively protected. The outer sheath 9 is usually made of wear-resistant, corrosion-resistant materials with excellent insulation properties, which can withstand physical wear, chemical corrosion and electrical insulation challenges in the external environment, ensuring that the tail line 8 maintains its original electrical properties and mechanical strength in a complex and changeable use environment. At the same time, the grounding wire 15 safely guides the charge on the metal casing or equipment that may be charged to the ground, thereby preventing people from getting electric shock accidents due to direct contact with the charged body. In daily use, if the equipment has leakage and is not grounded, once people touch these charged parts, the current will flow directly through the human body to the ground, which may cause serious Severe electric shock injuries can occur, and the existence of the grounding wire 15 provides a safer, low-impedance path for the current, effectively avoiding this risk. In addition, the grounding wire 15 also has the task of discharging the residual charge on the electrical equipment into the earth. During equipment shutdown or maintenance, the static charge accumulated inside the equipment can be released in time through the grounding wire 15 to avoid potential threats to subsequent operations or maintenance personnel. At the same time, in the case of a sudden call, the grounding wire 15 can quickly trigger the tripping protection mechanism of the power switch, cut off the power supply, and prevent the equipment from causing failures or accidents due to accidental power-on. The main purpose of the grounding wire 15 is to protect personnel and equipment from leakage damage, and it does not directly affect the normal operation of the machine itself. Therefore, in the design and installation of the electrical system, the relevant electrical safety standards and specifications must be strictly observed to ensure the correct setting and effective connection of the grounding wire 15, providing solid protection for the safety of personnel and equipment.

[0033] As a preferred embodiment, the material of the fastening bolts 14 and the positioning bolts 19 is cast steel; further, by using cast steel to make the fastening bolts 14 and the positioning bolts 19, the firmness and stability of the equipment during the positioning process are enhanced. Cast steel, as a high-strength, high-toughness metal material, has excellent mechanical properties and wear resistance, can withstand large tensile and shear forces, and is not prone to deformation or breakage. In the process of equipment assembly and positioning, the fastening bolts 14 and the positioning bolts 19 play a vital role. They not only need to ensure the tight connection between the various components, but also need to withstand the vibration and impact during the operation of the equipment to maintain the overall stability and accuracy of the equipment. In addition, cast steel also has good corrosion resistance and fatigue resistance, and can maintain the integrity and function of the bolts in various harsh environments. The fastening bolts 14 and the positioning bolts 19 can maintain their fastening effect and positioning accuracy for a long time, ensuring the long-term stable operation of the equipment. Therefore, by using cast steel to make the fastening bolts 14 and the positioning bolts 19, not only the firmness and stability of the equipment during positioning are improved, but also the high attention to equipment performance and reliability is reflected.

[0034] As a preferred embodiment, the bottom of the base 17 is evenly installed with post insulators 20; further, as an indispensable insulating control component in the power system, the post insulator 20 is particularly important in overhead transmission lines. The insulator suspended at one end of the high-voltage wire connection tower is usually called an insulator string. Their main design purpose is to increase the creepage distance. Creepage distance refers to the shortest distance between two conductive parts measured along the insulation surface. Increasing the creepage distance can effectively improve the electrical strength of the insulator and prevent insulation failure caused by surface discharge under severe weather conditions (such as lightning, heavy rain, etc.). Insulators are usually made of high-performance insulating materials such as silicone or ceramics. These materials have excellent electrical insulation performance, mechanical strength and weather resistance, and can maintain stable insulation effects in extreme environments. The design and manufacture of the post insulator 20 must strictly comply with relevant electrical safety standards and specifications to ensure that it can maintain reliable insulation performance under various environments and electrical load conditions. At the same time, the post insulator 20 also needs to be inspected and maintained regularly to promptly discover and deal with potential defects and hidden dangers to ensure the long-term stable operation of the power system. In conclusion, the continuous development and improvement of the post insulator 20 and related technologies are of great significance to ensuring the safe and reliable operation of the power system.

[0035] The working process of the present invention is as follows: when in use, an insulating layer 3 is arranged on the outside of the cable body 2, and its function is to insulate the conductor in the cable body 2 from the surrounding environment or the adjacent conductors. The wire core of the cable body 2 is a conductor. In order to prevent the exposed wire from short-circuiting and causing damage to the equipment, and the wire exceeding the safe voltage from causing harm to people, an insulating protective layer must be added to the cable body 2. The function of the semiconductor tape 4 in the high-voltage cable is to balance the electric field and improve the electric field distribution. A shielding layer of semi-conductive material is added to the surface of the conductor. It is at the same potential as the shielded conductor and is in good contact with the insulating layer 3, thereby avoiding local discharge between the conductor and the insulating layer 3. The function of arranging the stress cone 5 is to improve the metal sheath end The electric field distribution at the end is improved and the electric field strength at the edge of the metal sheath is reduced. The stress cone 5 is mainly extended with conductive material at the outer shielding port of the cable. Then the components required inside the terminal body 1 are installed in sequence. Finally, the base 17, the threaded through hole 18 and the positioning bolt 19 are used to cooperate with each other at the bottom of the terminal body 1 to fix the terminal body 1 to the specified position, which plays a role in positioning the terminal body 1 and simplifies its internal structure, thereby greatly shortening the time required for assembly, making construction operations more convenient, and significantly reducing the consumption of manpower and material resources, effectively avoiding the waste of resources, and improving the installation efficiency of the cable terminal, bringing users a more economical and quick use experience.

Claims

1. A cable outdoor terminal capable of balancing internal pressure, comprising a terminal body (1), characterized in that: The terminal body (1) is fixedly connected to a cable body (2) inside, an insulating layer (3) is sleeved on the outside of the cable body (2), a semi-conductive tape (4) is sleeved on the outside of the cable body (2), the semi-conductive tape (4) is located directly below the insulating layer (3), a stress cone (5) is arranged at the bottom of the semi-conductive tape (4), the stress cone (5) is sleeved on the outside of the cable body (2), the cable body (2) extends to the bottom of the terminal body (1), a tail wire (8) extends from the bottom of the cable body (2), a base (17) is fixedly connected to the bottom of the terminal body (1), a threaded through hole (18) is provided on the upper side of the base (17), and a positioning bolt (19) is installed in the internal thread of the threaded through hole (18).

2. The cable outdoor terminal capable of balancing internal pressure according to claim 1, characterized in that: The outer side of the cable body (2) is covered with a silicone self-adhesive tape (6), and the silicone self-adhesive tape (6) is located directly below the stress cone (5).

3. The cable outdoor terminal capable of balancing internal pressure according to claim 1, characterized in that: An insulating tube (7) is sleeved on the outer side of the cable body (2), and the cable body (2) passes through the insulating tube (7) and extends to the bottom of the insulating tube (7).

4. The cable outdoor terminal capable of balancing internal pressure according to claim 2, characterized in that: A connection terminal (10) is fixedly connected to the top of the terminal body (1), and the cable body (2) passes through the connection terminal (10) and extends to the outside of the terminal body (1).

5. The cable outdoor terminal capable of balancing internal pressure according to claim 1, characterized in that: A first sealing ring (11) is detachably mounted on the top of the terminal body (1), and the bottom of the first sealing ring (11) is in close contact with the top of the terminal body (1).

6. The cable outdoor terminal capable of balancing internal pressure according to claim 1, characterized in that: A shielding cover (12) is fixedly mounted on the top of the terminal body (1), the shielding cover (12) is sleeved on the outside of the cable body (2), a through hole is opened on the top of the shielding cover (12), a second sealing ring (13) is fixedly mounted inside the through hole, and the inside of the second sealing ring (13) is in contact with the outer wall of the cable body (2).

7. The cable outdoor terminal capable of balancing internal pressure according to claim 6, characterized in that: A fastening bolt (14) is threadedly mounted on the upper side of the shielding cover (12), and the terminal body (1) and the shielding cover (12) are positioned using the fastening bolt (14).

8. The cable outdoor terminal capable of balancing internal pressure according to claim 2, characterized in that: The outer side of the tail wire (8) is provided with an outer sheath (9), a grounding wire (15) is fixedly connected to the right side of the outer sheath (9), and the outer side of the grounding wire (15) is provided with a grounding sleeve (16).

9. The cable outdoor terminal capable of balancing internal pressure according to claim 7, characterized in that: The material of the fastening bolt (14) and the positioning bolt (19) is cast steel.

10. The cable outdoor terminal capable of balancing internal pressure according to claim 1, characterized in that: Post insulators (20) are evenly mounted on the bottom of the base (17).

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