CN216119736U

CN216119736U - High-voltage bushing

Info

Publication number: CN216119736U
Application number: CN202122651666.1U
Authority: CN
Inventors: 田平平; 丰加饶; 周丹
Original assignee: Wuhan Huate Electrical Equipment Co ltd
Current assignee: Wuhan Huate Electrical Equipment Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-03-22
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a high-voltage bushing, which comprises a shed component, a base component and a capacitor core, wherein the shed component covers the outside of the capacitor core, and the base component is arranged at the bottom of the shed component; the umbrella skirt component comprises a pressure equalizing cover, umbrella skirt section sleeves and connecting sleeves, a core rod is fixed at the top end of the capacitor core, and the core rod extends out of the pressure equalizing cover; the base component comprises an installation cylinder and an installation plate fixed on the bottom surface of the installation cylinder, the installation cylinder is connected into the connection sleeve, and the bottom end of the capacitor core is abutted to the inside of the installation cylinder. According to the utility model, the umbrella skirt component and the base component which are hermetically connected are wrapped outside the capacitor core, so that the effect of enhancing the protective barrier to the capacitor core is achieved, the sealing effect is enhanced, and the durability and the stability of the high-voltage bushing are prolonged.

Description

High-voltage bushing

Technical Field

The utility model relates to the technical field of high-voltage bushings, in particular to a high-voltage bushing.

Background

Electrical equipment or devices such as high voltage transformers are generally provided with bushings adapted to carry current at high potential through a grounded barrier, e.g. a transformer tank or wall, i.e. high voltage bushings are required when the current carrying conductor needs to pass through a metal enclosure or wall at a different potential than the one.

High-voltage bushings can be divided into capacitive bushings and oil-filled bushings: the capacitive bushing can be divided into a gummed paper bushing and an oil paper bushing, is a wire outlet device for leading a high-voltage wire in the transformer to the outside of the oil tank, can be used for insulating the lead wire from the ground, also plays a role in fixing the lead wire, and is one of important accessories of the transformer; the oil-filled bushing can be divided into a single oil gap bushing and a multi-oil gap bushing, the cable paper in the oil-filled bushing is similar to a voltage-sharing polar plate in a capacitive bushing, a capacitor core in the capacitive bushing is a series of coaxial cylindrical capacitors, and the dielectric constant of the insulating paper in the oil-filled bushing is higher than that of oil, so that the field intensity at the position can be reduced.

In the prior art, since the high voltage bushing is generally installed on a utility pole or a cable, and is exposed in high air for a long time at a high place, the bushing itself is seriously oxidized or deteriorated after being used for a long time, so that the external structure is broken and damaged, the internal sealing performance is reduced, the dielectric loss value of the capacitor rod is increased, and the service life is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-voltage bushing which is more stable and durable.

In order to solve the technical problems, the utility model adopts the following technical scheme: a high-voltage bushing comprises a shed assembly, a base assembly and a capacitor core, wherein the shed assembly is covered outside the capacitor core, and the base assembly is arranged at the bottom of the shed assembly;

the umbrella skirt assembly comprises a pressure equalizing cover, umbrella skirt section sleeves and connecting sleeves, the umbrella skirt section sleeves are fixedly connected to the bottom ends of the pressure equalizing cover, the connecting sleeves are fixedly connected to the bottom ends of the umbrella skirt section sleeves, a core rod is fixed to the top end of the capacitor core, and the core rod extends out of the pressure equalizing cover;

the base component comprises an installation cylinder and an installation plate fixed on the bottom surface of the installation cylinder, the installation cylinder is connected into the connection sleeve, and the bottom end of the capacitor core is abutted to the inside of the installation cylinder.

Further, the umbrella skirt subassembly adopts the silicon rubber material of high temperature design, the pressure equalizing cover is spherical structure, umbrella skirt festival sleeve pipe comprises the sleeve pipe that the multisection cross-section is the disc-shaped structure, and is adjacent fixedly connected with cylinder pipe between the disc-shaped sleeve pipe, inclination between disc-shaped sheathed tube top surface and bottom surface and the horizontal plane all is less than 90 degrees, many internal thread grooves have been seted up to connecting sleeve's bottom internal face, it has many external thread strips to distribute on the outer wall of installation section of thick bamboo, internal thread groove with external thread strip screw thread matches.

Further, the upper surface of mounting panel centers on the installation section of thick bamboo is fixed with seal ring, adapter sleeve's bottom contradicts extremely seal ring, the four corners of mounting panel is fixed with the location platform respectively, install the reference column in the location platform, the peripheral cover of reference column is equipped with insulating umbrella skirt cover.

Furthermore, the periphery of the capacitor core is tightly wrapped with an insulation protection pipe, the top and the bottom of the capacitor core respectively extend out of two ends of the insulation protection pipe, a fiber reinforced cover sleeve is installed at the top of the insulation protection pipe, a base is fixed at the bottom end of the fiber reinforced cover sleeve, the fiber reinforced cover sleeve is covered at the top of the capacitor core through the base, and the bottom of the insulation protection pipe surrounds the capacitor core and is provided with a leakage sensor.

Further, the top end of the fiber reinforced cover sleeve is abutted to the inner wall surface of the pressure equalizing cover, the core rod sequentially extends from inside to outside to form the fiber reinforced cover sleeve and the pressure equalizing cover, the core rod is arranged on the top end of the pressure equalizing cover and is fixedly provided with a stopping gasket, an alarm is mounted on the stopping gasket, the alarm is sleeved on the core rod, and the pressure equalizing ball is mounted on the top end of the core rod.

Furthermore, a groove is formed in the installation barrel, and the groove is matched with the insulation protection pipe and the capacitor core in a clamping mode in the shape of the bottom of the insulation protection pipe.

Further, the insulating protective tube with it is equipped with the sheath subassembly to closely press from both sides between the full skirt festival sleeve pipe, the sheath subassembly includes a plurality of section pipes and many damping springs, adjacent two it is many to be ring configuration fixedly connected with between the section pipe damping spring, each encircle respectively on the section pipe and be equipped with a plurality of louvres, the top the section pipe and bottom cloth has the helicla flute equally divide on the internal face of section pipe, the outer wall of insulating protective tube distributes from top to bottom has the spiral strip, the spiral strip with the helicla flute screw thread matches.

The utility model has the beneficial effects that:

according to the utility model, the umbrella skirt component and the base component which are hermetically connected are wrapped outside the capacitor core, so that the effect of enhancing the protective barrier to the capacitor core is achieved, the sealing effect is enhanced, and the durability and the stability of the high-voltage bushing are prolonged.

Drawings

Fig. 1 is an overall structural front view of an embodiment of the present invention.

Fig. 2 is an elevation view of the internal structure of the shed assembly in accordance with one embodiment of the utility model.

Fig. 3 is a sectional view of the inner structure of the insulation shield according to an embodiment of the present invention.

The components in the drawings are labeled as follows: 1. a shed assembly; 101. a voltage-equalizing cover; 102. umbrella skirt section sleeves; 103. connecting a sleeve; 104. an internal thread groove; 2. a base assembly; 201. mounting the cylinder; 202. an externally threaded strip; 203. mounting a plate; 204. a sealing gasket; 205. a positioning table; 206. a positioning column; 207. an insulating umbrella skirt cover; 3. a capacitor core; 301. a core rod; 4. an insulating protection tube; 401. a helical strip; 5. a fiber-reinforced boot; 501. a base; 6. a jacket assembly; 601. pipe joints; 602. heat dissipation holes; 603. a damping spring; 7. an electric leakage sensor; 8. a backstop washer; 9. an alarm; 10. and (4) equalizing the pressure of the balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

See fig. 1-3.

The utility model relates to a high-voltage bushing, which comprises a shed component 1, a base component 2 and a capacitor core 3, wherein the shed component 1 is covered outside the capacitor core 3, and the base component 2 is arranged at the bottom of the shed component 1;

the shed assembly 1 comprises a voltage-sharing cover 101, a shed section sleeve 102 and a connecting sleeve 103, wherein the shed section sleeve 102 is fixedly connected to the bottom end of the voltage-sharing cover 101, the connecting sleeve 103 is fixedly connected to the bottom end of the shed section sleeve 102, a core rod 301 is fixed to the top end of the capacitor core 3, and the core rod 301 extends out of the voltage-sharing cover 101;

the base component 2 comprises an installation cylinder 201 and an installation plate 203 fixed on the bottom surface of the installation cylinder 201, the installation cylinder 201 is connected to the inside of the connection sleeve 103, and the bottom end of the capacitor core 3 is abutted to the inside of the installation cylinder 201.

In one embodiment, the shed assembly 1 is made of a high-temperature-shaped silicon rubber material, the pressure equalizing cover 101 is in a spherical structure, the shed section sleeves 102 are composed of a plurality of sleeves with sections in a disc-shaped structure, a cylindrical pipe is fixedly connected between every two adjacent disc-shaped sleeves, the inclination angles between the top surface and the bottom surface of each disc-shaped sleeve and the horizontal plane are smaller than 90 degrees, the inner wall surface of the bottom end of each connecting sleeve 103 is provided with a plurality of inner thread grooves 104, the outer wall surface of each mounting cylinder 201 is provided with a plurality of outer thread strips 202, the inner thread grooves 104 are in thread matching with the outer thread strips 202, so that the shed assembly 1 protects the capacitor core 3 from the influence of severe weather and the electric corrosion, increases the required creepage distance, and the pressure equalizing cover 101 arches outwards to protect the joint of the capacitor core 3 and the mandrel 301 at the top end thereof, the umbrella skirt section sleeve 102 has the advantages that the umbrella skirt section sleeve has a protection effect and also has an effect of uniform electric field, rain and snow can be effectively prevented from being accumulated on the umbrella skirt section sleeve 102 due to the structural design, the device is prevented from being frozen or being invaded by rain, meanwhile, dirt such as dust can be prevented from remaining in gaps, the power failure accident caused by short-circuit tripping can be effectively avoided, and the connecting sleeve 103 is in threaded connection with the mounting cylinder 201, so that the umbrella skirt assembly 1 and the base assembly 2 are tightly mounted.

In an embodiment, the upper surface of mounting panel 203 centers on installation cylinder 201 is fixed with seal ring 204, the bottom of connecting sleeve 103 contradicts to seal ring 204, the four corners of mounting panel 203 is fixed with location platform 205 respectively, install reference column 206 in the location platform 205, the peripheral cover of reference column 206 is equipped with insulating umbrella skirt cover 207, and design like this, seal ring 204 helps improving the sealed effect of connection, because the device generally is located the high altitude installation, so through the matching of location platform 205 and reference column 206, can strengthen the firm degree of mounting panel 203 installation, avoid becoming flexible and carelessly fall and cause dangerous accident, safety when insulating umbrella skirt cover 207 ensures the staff's installation, prevents the electric shock.

In an embodiment, an insulation protection tube 4 is tightly wrapped around the capacitor core 3, the top and the bottom of the capacitor core 3 respectively extend out of two ends of the insulation protection tube 4, a fiber-reinforced cover 5 is mounted on the top of the insulation protection tube 4, a base 501 is fixed at the bottom end of the fiber-reinforced cover 5, the fiber-reinforced cover 5 is covered on the top of the capacitor core 3 through the base 501, and an electric leakage sensor 7 is mounted at the bottom of the insulation protection tube 4 around the capacitor core 3, so that the insulation protection tube 4 plays a role in stabilizing and reinforcing the capacitor core 3 on one hand, and plays an insulation protection role outside the capacitor core 3 on the other hand, and does not affect the conductive effect of the capacitor core 3.

In one embodiment, the top end of the fiber reinforced cover 5 abuts against the inner wall surface of the voltage-sharing cover 101, the core rod 301 sequentially extends from inside to outside out of the fiber reinforced cover 5 and the voltage-sharing cover 101, a backstop washer 8 is fixed on the core rod 301 and positioned at the top end of the voltage-sharing cover 101, an alarm 9 is mounted on the backstop washer 8, the alarm 9 is sleeved on the core rod 301, and a voltage-sharing ball 10 is mounted at the top end of the core rod 301, so that the design is adopted, the fiber reinforced cover 5 is fixedly supported between the voltage-sharing cover 101 and the top end of the capacitor core 3, the internal structure compactness of the device is enhanced, the core rod 301 plays a role of a tube core wire for the capacitor core 3 and is convenient to connect with external equipment, when the leakage sensor 7 detects that the capacitor core 3 has a leakage condition, a signal is immediately triggered to the alarm 9 and remote end alarm equipment, the safety and vigilance consciousness is improved, paging workers can timely come for maintenance, the voltage equalizing ball 10 effectively improves the surrounding electric field distribution, and the risk of lightning stroke is reduced.

In an embodiment, a groove is formed in the installation cylinder 201, and the groove is matched with the bottom shapes of the insulation protection tube 4 and the capacitor core 3 in a clamping manner, so that the tightness of the fixed installation of the capacitor core 3 and the base component 2 is improved, and a gap is prevented from being loosened.

In an embodiment, a sheath assembly 6 is tightly clamped between the insulating protection tube 4 and the umbrella skirt joint sleeve 102, the sheath assembly 6 includes a plurality of joint tubes 601 and a plurality of damping springs 603, a plurality of damping springs 603 are fixedly connected between two adjacent joint tubes 601 in an annular structure, a plurality of heat dissipation holes 602 are respectively and annularly arranged on each joint tube 601, spiral grooves are evenly distributed on the inner wall surfaces of the joint tubes 601 at the top end and the bottom end, spiral strips 401 are distributed on the outer wall surface of the insulating protection tube 4 from top to bottom, and the spiral strips 401 are in thread matching with the spiral grooves, so that the threads with adjustable positions at the two ends of the sheath assembly 6 are mounted on the periphery of the insulating protection tube 4, the middle part of the sheath assembly 6 can elastically stretch, the tear strength can be improved, and damage during transportation and installation can be prevented, meanwhile, high flexibility is kept in the temperature range of the use environment, cracks or fractures caused by low temperature or sudden temperature change are prevented, and the effectiveness and the durability of the capacitor core 3 are ensured.

It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this disclosure.

Claims

1. A high voltage bushing, characterized by: the capacitor comprises a shed component (1), a base component (2) and a capacitor core (3), wherein the shed component (1) is covered outside the capacitor core (3), and the base component (2) is arranged at the bottom of the shed component (1);

the shed assembly (1) comprises a voltage-sharing cover (101), shed section sleeves (102) and connecting sleeves (103), the shed section sleeves (102) are fixedly connected to the bottom end of the voltage-sharing cover (101), the connecting sleeves (103) are fixedly connected to the bottom end of the shed section sleeves (102), a core rod (301) is fixed to the top end of the capacitor core (3), and the core rod (301) extends out of the voltage-sharing cover (101);

base component (2) are including installation section of thick bamboo (201) and fix mounting panel (203) of installation section of thick bamboo (201) bottom surface, installation section of thick bamboo (201) are connected to in adapter sleeve (103), the bottom of electric capacity core (3) is contradicted to the inside of installation section of thick bamboo (201).

2. The high voltage bushing as claimed in claim 1, wherein: umbrella skirt subassembly (1) adopts the silicon rubber material of high temperature design, pressure equalizing cover (101) are spherical structure, umbrella skirt festival sleeve pipe (102) comprise the sleeve pipe that the multisection cross-section is disc-shaped structure, and is adjacent fixedly connected with cylinder pipe between the disc-shaped sleeve pipe, the inclination between disc-shaped sheathed tube top surface and bottom surface and the horizontal plane all is less than 90 degrees, many internal thread grooves (104) have been seted up to the bottom internal face of adapter sleeve (103), it has many external screw thread strip (202) to distribute on the outer wall of installation section of thick bamboo (201), internal thread groove (104) with external screw thread strip (202) screw thread matching.

3. The high voltage bushing as claimed in claim 1, wherein: the upper surface of mounting panel (203) centers on installation section of thick bamboo (201) is fixed with seal ring (204), the bottom of adapter sleeve (103) is contradicted extremely seal ring (204), the four corners of mounting panel (203) is fixed with location platform (205) respectively, install reference column (206) in location platform (205), the peripheral cover of reference column (206) is equipped with insulating umbrella skirt cover (207).

4. The high voltage bushing as claimed in claim 1, wherein: the periphery of electric capacity core (3) closely wraps up has insulating protective tube (4), the top and the bottom of electric capacity core (3) extend respectively the both ends of insulating protective tube (4), fibre reinforcing cover (5) are installed at the top of insulating protective tube (4), the bottom mounting of fibre reinforcing cover (5) has base (501), fibre reinforcing cover (5) via base (501) cover is established the top of electric capacity core (3), the bottom of insulating protective tube (4) centers on electric capacity core (3) are installed leakage sensor (7).

5. The high voltage bushing as claimed in claim 4, wherein: the top of fibre reinforcement cover (5) contradicts extremely the internal face of pressure-equalizing cover (101), extend in proper order outside core rod (301) fiber reinforcement cover (5) and pressure-equalizing cover (101), on core rod (301) and be located the top of pressure-equalizing cover (101) is fixed with stopping packing ring (8), install alarm (9) on stopping packing ring (8), just alarm (9) cover is established on core rod (301), pressure-equalizing ball (10) are installed on the top of core rod (301).

6. The high voltage bushing as claimed in claim 4, wherein: the installation cylinder (201) is internally provided with a groove, and the groove is matched with the insulation protection tube (4) and the capacitor core (3) in a clamping manner in the shape of the bottom.

7. The high voltage bushing as claimed in claim 4, wherein: insulating protective tube (4) with it is equipped with sheath subassembly (6) to closely press from both sides between shed festival sleeve pipe (102), sheath subassembly (6) include a plurality of nodal tubes (601) and many damping spring (603), adjacent two it is many to be annular structure fixedly connected with between nodal tube (601) damping spring (603), each encircle respectively on nodal tube (601) and be equipped with a plurality of louvres (602), the top nodal tube (601) and bottom the internal face of nodal tube (601) is gone up and is all distributed the helicla flute, the outer wall of insulating protective tube (4) distributes from top to bottom has helical strip (401), helical strip (401) with the helicla flute screw thread matches.