CN114498502B - A high-voltage busbar and a noise suppression component of the busbar barrel - Google Patents

Abstract

The invention belongs to the field of high-voltage buses, and particularly relates to a high-voltage bus and a noise suppression assembly of a bus barrel. A noise suppression assembly of a bus tube comprises a conductive shielding tube arranged in the bus tube or a conductive shielding plate distributed on the inner side of the tube wall of the bus tube along the circumferential direction of the bus tube, wherein sound absorption holes are distributed in the conductive shielding tube or the conductive shielding plate; a conductive connecting structure used for electrically connecting the conductive shielding cylinder or the conductive shielding plate with the bus cylinder body in a conductive manner is arranged between the conductive shielding cylinder or the conductive shielding plate and the bus cylinder body, so that the problems of large vibration and noise when the bus cylinder body is used in the prior art are solved.

Description

A high-voltage busbar and a noise suppression component of the busbar barrel

technical field

The invention belongs to the field of high-voltage busbars, in particular to a noise suppression component of a busbar barrel.

Background technique

In recent years, with the increasing number of UHV GIS power stations in related industries, in field use, the problem of abnormal vibration and noise of high-voltage busbars in GIS equipment reported by users has also increased, especially for 800kV high-voltage busbars. obvious. Vibration not only produces noise, but also affects the operation of the high-voltage busbar. For example, the alternating load caused by long-term vibration of the high-voltage bus may cause microscopic cracks on the parts of the high-voltage bus to expand, so that the parts fail, especially on castings or welds. For another example, long-term alternating loads will also lead to loosening of the pre-tightening force of the bolts, resulting in failure of the connection of the threaded connectors on the high-voltage bus. In addition, vibration may also cause friction between parts on the high-voltage bus to generate metal debris, thereby reducing the insulation effect.

For the high-voltage busbar, there are two main sources of vibration: First, the basic structure of the high-voltage busbar can be simplified as the central conductor, insulating medium and busbar barrel. The high-voltage alternating current flows through the center conductor, and the busbar barrel is used In the case of a thin-walled case where the central conductor carrying high voltage is grounded, the insulating medium isolates the central conductor from the busbar barrel. From a macro point of view, the high-voltage busbar is actually a large capacitor, and the central conductor and the busbar barrel are equivalent to the two ends of the capacitor. When an AC voltage is applied to the capacitor, an AC current will flow through the capacitor, and an electrostatic force will be generated between the electrodes. The formula for the electrostatic force is as follows:

It can be seen that the size of the electrostatic force F is related to the voltage U and the distance d between the plates. When the alternating current is passed through the central conductor, an alternating voltage will be generated between the busbar barrel and the central conductor, and the two will be There will be an alternating electrostatic force, which will cause the vibration of the external busbar cylinder.

Secondly, in order to shield the internal electric field strength of the high-voltage busbar, a layer of shielding cover is generally used to surround and shield the irregular parts. The shield itself is also a thin-walled structure. When a high-voltage alternating current flows through the central conductor, it is also equivalent to a capacitor plate, thereby generating an alternating electrostatic force. Under the action of electrostatic force, the shielding cover generates vibration and forms noise. The noise propagates to the busbar barrel through the insulating gas in the high-pressure gas chamber, causing the busbar barrel to vibrate.

For the noise problem caused by vibration, the existing technology often uses shielding parts with mesh structure. For example, in the patent document CN214799142U, a deceleration motor for hoisting and traction in a three-dimensional parking garage is adopted. The resonant sound-absorbing cylinder with the through hole of the cloth, the interval between the resonant sound-absorbing cylinder and the motor casing and the through-hole on the sound-absorbing cylinder will form countless continuous single Helmholtz resonators, using the air in the through-hole There is a principle of friction damping in the back and forth vibration to consume sound energy, so as to achieve effective shock absorption and sound absorption.

If the above-mentioned resonant sound-absorbing cylinder with through holes is installed inside the busbar cylinder to reduce noise, although the noise generated by the shielding cover in the resonant sound-absorbing cylinder can be suppressed from spreading outward, the resonant sound-absorbing cylinder cannot suppress the noise that is located in its diameter. Noise to the outside, and part of the noise of the busbar barrel is formed by the vibration of the busbar barrel itself, so it is impossible to suppress the noise generated by the busbar barrel outside the resonant sound-absorbing barrel. The resonant sound-absorbing barrel in the prior art For high-voltage bus noise suppression performance is limited. It is also impossible to eliminate the source of noise—vibration of components, and it is impossible to solve the problems of microscopic crack expansion, bolt looseness, and easy generation of metal debris caused by vibration.

Contents of the invention

The purpose of the present invention is to provide a high-voltage busbar and a noise suppression assembly for the busbar barrel, which can solve the problem of relatively large vibration and noise when the busbar barrel is in use in the prior art.

In order to solve the above problems, the technical scheme adopted in the present invention is:

A noise suppression assembly for a busbar cylinder, comprising a conductive shielding cylinder arranged in the busbar cylinder or a conductive shielding plate distributed on the inner side of the busbar cylinder wall along the circumferential direction of the busbar cylinder, the conductive shielding cylinder or There are sound-absorbing holes distributed on the conductive shielding plate, and a support is provided on the conductive shielding cylinder or the conductive shielding plate, and the support is used to form an interval between the conductive shielding cylinder or the conductive shielding plate and the cylinder wall of the busbar cylinder, The interval and the sound-absorbing holes together form a resonant sound-absorbing structure; a conductive connection structure for conductively connecting the conductive shielding cylinder or conductive shielding plate to the busbar cylinder is provided between the conductive shielding cylinder or the conductive shielding plate and the busbar cylinder.

Beneficial effects: the conductive shielding cylinder with sound-absorbing holes installed in the busbar cylinder of the present invention can form a space between the support and the cylinder wall of the busbar cylinder, thereby forming a resonant sound-absorbing structure. The noise is suppressed, and at the same time, the conductive shielding cylinder can be electrically connected to the busbar cylinder through the conductive connection structure, thereby replacing the busbar cylinder to become the actual capacitive grounding terminal plate, and the capacitive current passes through the conductive shielding cylinder to make the metal plate vibrate under force. Compared with the vibration of the busbar barrel itself in the prior art, the noise generated inside the busbar barrel can be suppressed, and the vibration of the busbar barrel itself and the noise generated by the vibration can be avoided from the root, so that the The vibration and noise of the high-voltage busbar are weakened, and the problem of relatively large vibration and noise when the busbar barrel is used in the prior art is solved.

Furthermore, the conductive connection structure is arranged in the space between the conductive shielding cylinder and the bus bar cylinder.

Beneficial effects: the conductive connection structure is arranged in the interval between the conductive shielding cylinder and the bus bar cylinder body, and no other positions are occupied for arranging the conductive connection structure, which simplifies the structure of the device.

Furthermore, the support member is a support with external threads, a support head is threadedly connected to the support, and the top surface of the support head is a curved surface for supporting the inner wall of the busbar barrel.

Beneficial effects: the support includes a support with external threads and a support head screwed on the support, which is simple in structure and easy to manufacture; the surface of the support head is a curved surface, which can avoid the process of installing the conductive shielding cylinder into the busbar cylinder. Scratches the inner surface of the busbar barrel.

Furthermore, the support is fixed on the outer peripheral surface of the conductive shielding cylinder.

Beneficial effects: the support is fixed on the outer peripheral surface of the conductive shielding cylinder, and the position between the conductive shielding cylinder and the busbar cylinder is adjusted by adjusting the screw-in depth of the support head screwed on the support seat, which facilitates the assembly of the conductive shielding layer to the busbar barrel, which simplifies the structure of the device.

The support and the support head are made of conductive material, and the conductive connection structure is formed by the support and the support head.

Beneficial effects: the support and the supporting head are made of conductive material, which can be supported to form a conductive connecting piece, so as to realize the conductive connection between the conductive shielding cylinder and the bus bar cylinder.

The conductive shielding cylinder is an elastically bendable flexible cylinder.

Beneficial effects: the conductive shielding cylinder adopts an elastically bendable flexible cylinder, which is convenient to be installed into the busbar cylinder by bending the conductive shielding cylinder, and the installation is convenient.

The conductive shielding cylinder or the conductive shielding plate is made of metal.

Beneficial effects: the conductive shielding cylinder or the conductive shielding plate made of metal has good flow performance and low cost.

Furthermore, the conductive shielding cylinder or the conductive shielding plate is made of aluminum.

A high-voltage busbar, including a busbar cylinder and a noise suppression assembly, the noise suppression assembly of the busbar cylinder includes a conductive shielding cylinder for being arranged in the busbar cylinder or for being distributed inside the cylinder wall of the busbar cylinder along the circumferential direction of the busbar cylinder The conductive shielding plate, the conductive shielding cylinder or the conductive shielding plate are distributed with sound absorption holes, the conductive shielding cylinder or the conductive shielding plate is provided with a support, the support is used to make the conductive shielding cylinder or the conductive shielding plate and the bus barrel A space is formed between the walls of the body, and the space and the sound-absorbing holes together form a resonant sound-absorbing structure; between the conductive shielding tube or the conductive shielding plate and the busbar barrel, there is a The conductive connection structure of the body conductive connection.

Beneficial effects: the conductive shielding cylinder with sound-absorbing holes installed in the busbar cylinder of the present invention can form a space between the support and the cylinder wall of the busbar cylinder, thereby forming a resonant sound-absorbing structure. The noise is suppressed, and at the same time, the conductive shielding cylinder can be electrically connected to the busbar cylinder through the conductive connection structure, thereby replacing the busbar cylinder to become the actual capacitive grounding terminal plate, and the capacitive current passes through the conductive shielding cylinder to make the metal plate vibrate under force. Compared with the vibration of the busbar barrel itself in the prior art, the noise generated inside the busbar barrel can be suppressed, and the vibration of the busbar barrel itself and the noise generated by the vibration can be avoided from the root, so that the The vibration and noise of the high-voltage busbar are weakened, and the problem of relatively large vibration and noise when the busbar barrel is used in the prior art is solved.

Furthermore, the conductive connection structure is arranged in the space between the conductive shielding cylinder and the bus bar cylinder.

Beneficial effects: the conductive connection structure is arranged in the interval between the conductive shielding cylinder and the bus bar cylinder body, and no other positions are occupied for arranging the conductive connection structure, which simplifies the structure of the device.

Furthermore, the support member is a support with external threads, a support head is threadedly connected to the support, and the top surface of the support head is a curved surface for supporting the inner wall of the busbar barrel.

Beneficial effects: the support includes a support with external threads and a support head screwed on the support, which is simple in structure and easy to manufacture; the surface of the support head is a curved surface, which can avoid the process of installing the conductive shielding cylinder into the busbar cylinder. , Scratch the inner surface of the busbar barrel.

Furthermore, the support is fixed on the outer peripheral surface of the conductive shielding cylinder.

Beneficial effects: the support is fixed on the outer peripheral surface of the conductive shielding cylinder, and the position between the conductive shielding cylinder and the busbar cylinder is adjusted by adjusting the screw-in depth of the support head screwed on the support seat, which facilitates the assembly of the conductive shielding layer to the busbar barrel, which simplifies the structure of the device.

The support and the support head are made of conductive material, and the conductive connection structure is formed by the support and the support head.

Beneficial effects: the support and the supporting head are made of conductive material, which can be supported to form a conductive connecting piece, so as to realize the conductive connection between the conductive shielding cylinder and the bus bar cylinder.

The conductive shielding cylinder is an elastically bendable flexible cylinder.

Beneficial effects: the conductive shielding cylinder adopts an elastically bendable flexible cylinder, which is convenient to be installed into the busbar cylinder by bending the conductive shielding cylinder, and the installation is convenient.

The conductive shielding cylinder or the conductive shielding plate is made of metal.

Beneficial effects: the conductive shielding cylinder or the conductive shielding plate made of metal has good flow performance and low cost.

Furthermore, the conductive shielding cylinder or the conductive shielding plate is made of aluminum.

Furthermore, at least a part of the left and right ends of the shielding case is shielded by the conductive shielding cylinder or the conductive shielding plate along the radial direction of the busbar cylinder.

Beneficial effects: the conductive shielding cylinder is covered outside the shielding case, which can prevent the noise generated by the vibration of the shielding case from spreading outward through the insulating gas in the high-pressure gas chamber, which is beneficial to improve the noise suppression effect.

Furthermore, the high-voltage busbar includes a central conductor arranged in the busbar barrel and high-pressure gas chamber partitions arranged at both ends of the busbar barrel, the central conductor is connected to the high-pressure gas chamber partition, and the connection with the high-pressure gas chamber partition A shielding cover is provided at the place, and at least a part of the shielding cover is shielded by the conductive shielding cylinder or the conductive shielding plate along the radial direction of the busbar cylinder.

Beneficial effect: adopting the above scheme, the conductive shielding cylinder cover can cover the shielding case, which is beneficial to prevent the noise generated by the vibration of the shielding case from propagating outward through the insulating gas in the high-pressure gas chamber, and is beneficial to improving the noise suppression effect.

Description of drawings

Fig. 1 is the structural representation of middle and high voltage bus bar of the present invention;

Fig. 2 is a sectional view along A-A in Fig. 1;

Fig. 3 is a structural schematic diagram when the conductive shielding cylinder is deployed in the present invention;

Fig. 4 is a schematic structural view of the support in the present invention.

The names of the components corresponding to the corresponding reference numerals in the figure are:

1. Bus barrel; 11. End flange; 2. High-pressure air chamber partition; 3. Center conductor; 4. Shielding cover; 5. Conductive shielding cylinder; 51. Sound absorption hole; 6. Support; 61. Support; 62, support head; 7, resonance cavity; 8, high-pressure air chamber.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that in the specific embodiments of the present invention, possible terms such as "first" and "second" and other relative terms are only used to distinguish one entity or operation from another entity or operation , without necessarily requiring or implying any actual relationship or order between these entities or operations. Furthermore, the possible occurrences of terms such as "comprises", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, article, or apparatus are also included. Without further limitations, the phrase "comprising a ..." and other qualified elements that may appear does not exclude the presence of additional identical elements in the process, method, article, or device that includes said elements.

In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrally connected; may be mechanically connected, may also be electrically connected; may be directly connected, may also be indirectly connected through an intermediary, or may be internal communication between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention through specific situations.

In the description of the present invention, unless otherwise clearly specified and limited, the term "has to be" that may appear should be understood in a broad sense, for example, the object of "has to be" can be a part of the body, or it can be separated from the body Arranged and connected on the body, the connection can be detachable or non-detachable. Those skilled in the art can understand the specific meanings of the above terms in the present invention through specific situations.

Below in conjunction with embodiment the present invention is described in further detail.

Embodiment 1 of the high-voltage busbar in the present invention:

As shown in Figure 1 and Figure 2, the high-voltage busbar includes a busbar cylinder 1, which is a hollow cylinder, with end flanges 11 at both ends, and the end flanges 11 are used for separate installation with other The bus barrel connection. There is a circular high-pressure gas chamber partition 2 between the busbar cylinder 1 and other separate busbar cylinders, and the high-pressure gas chamber partition 2 is fixed and clamped on the end flanges of the two busbar cylinders 1 11 Between the end faces, a high-pressure air chamber 8 is formed between the two ends of the bus bar cylinder 1. In the middle part of the high-pressure gas chamber partition plate 2, an insert for conductive connection of the rod-shaped central conductor 3 is also provided. The central conductor 3 is connected to the high-pressure gas chamber partition plate 2, and a shielding cover 4 is provided at the junction with the high-pressure gas chamber partition plate 2. At least a part of the shielding cover 4 is covered by the conductive shielding tube 5 along the diameter of the busbar cylinder body 1. For shielding, the shielding cover 4 extends from both ends of the high-pressure gas chamber partition plate 2 and surrounds the irregular parts near the central conductor 3 to play the role of shielding the electric field intensity.

As shown in Figures 1 and 2, a conductive shielding cylinder 7 is also fixedly installed in the busbar cylinder 1, and the conductive shielding cylinder 7 covers the central conductor 3 and the vicinity of the central conductor 3 inside the high-pressure gas chamber 8 of the entire busbar cylinder 1 All components including the shield 4. The conductive shielding cylinder 5 is a bendable flexible metal material, aluminum in this embodiment, and as shown in Figure 3, the array of sound absorption holes 51 is arranged on it, and finally it will be installed on the busbar in the form of a curled cylinder In cylinder 1.

As shown in FIG. 1 and FIG. 2 , the busbar cylinder 1 and the conductive shielding cylinder 5 are connected by a support 6 . As shown in FIG. 4 , the support member 6 includes a support 61 fixed on the outer peripheral surface of the conductive shielding cylinder 5 and a support head 62 screwed on the support 61 . Specifically, the support 61 is a screw whose head is welded and fixed on the outer peripheral surface of the conductive shielding cylinder 5 , and whose other end is provided with an external thread for threaded connection with the support head 62 . The support head 62 is screwed on the support 61, and the top end of the support head 62 is a ball head, which is used to support the inner wall of the busbar cylinder 1 and form a resonance cavity between the busbar cylinder 1 and the conductive shielding cylinder 5 7. The support 61 and the support head 62 are made of conductive material, and the conductive connector is formed by the support 61 and the support head 62 to realize the conductive connection between the bus bar cylinder 1 and the conductive shielding cylinder 5 . Of course, in other embodiments, the conductive connectors can also be replaced by other forms, and are independent from the support 6, for example, adopt a structure similar to that of the particle trap in the busbar barrel 1, and connect the two ends of the conductive shielding barrel 5 Conductive bars are arranged at the ends, and the conductive bars are electrically connected with the ends of the bus bar barrel 1.

In this embodiment, the sound-absorbing holes 51 are micro-perforated, and the structural damping is large, which can absorb a large amount of vibration. The sound-absorbing hole 51 and the resonant cavity 7 resonate the sound-absorbing structure together. By changing the structural size and installation position of the conductive shielding cylinder 5, the bandwidth and center frequency of sound absorption can be changed, so that it can cope with the alternating current system with different frequency harmonics. The electrostatic force generated by the variable current causes vibration and thus affects the high-voltage busbar.

During operation, the conductive shielding cylinder 5 arranged in the busbar cylinder can have the following effects:

First, the conductive shielding cylinder 5 is connected to the busbar cylinder flange 11 through a conductive connection structure, so that the conductive shielding cylinder 5 and the busbar cylinder 1 form an equipotential connection, so that the conductive shielding cylinder 5 becomes a capacitive plate. When the capacitive current flows Via the capacitive plate, the conductive shielding cylinder 5 is vibrated by electrostatic force. Since a large number of micro-perforations are designed on the conductive shielding cylinder 5, which can absorb vibration, compared with the original busbar cylinder 1, the vibration noise will be greatly reduced.

Secondly, the conductive shielding tube 5 covers the center conductor 3 in the inner high-pressure air chamber 8 of the entire bus cylinder body 1 and all parts including the shielding cover 4 near the center conductor 3, so that the conductive shielding tube 5 can be connected with the resonant cavity The body 7 together blocks the noise generated by the shielding case 4 to prevent it from being transmitted to the bus barrel body 1.

Embodiment 2 of the high-voltage busbar in the present invention:

The difference between this embodiment and Embodiment 1 lies in that in Embodiment 1, the conductive shielding cylinder or the conductive shielding plate is made of metal. However, in this embodiment, the conductive shielding cylinder is made of non-metallic material capable of conducting electricity. Non-metallic conductive materials can be selected from existing products by those skilled in the art, and will not be described in detail here.

Embodiment 3 of the high-voltage busbar in the present invention:

The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the support member is a support with an external thread, and a support head is threaded on the support, and the top end of the support head is supported in the bus barrel on the wall. In this embodiment, a fixing nut is provided on the outer peripheral surface of the conductive shielding cylinder, the fixing nut forms a support, the support head is a screw threaded on the fixing nut, and the top of the screw is used to support the inner wall of the bus bar cylinder.

Embodiment 4 of the high-voltage busbar in the present invention:

The difference between this embodiment and embodiment 1 is that in embodiment 1, the top surface of the support head is a spherical surface for supporting the inner wall of the bus bar cylinder. However, in this embodiment, the top surface of the support head is an arc surface.

Embodiment 5 of the high-voltage busbar in the present invention:

The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the surface of the support head is a spherical surface for supporting the inner wall of the bus bar cylinder. In this embodiment, the top surface of the support head is an ellipse.

Embodiment 6 of the high-voltage busbar in the present invention:

The difference between this embodiment and Embodiment 1 lies in that: in Embodiment 1, the conductive shielding cylinder is distributed on the overall busbar cylinder. In this embodiment, however, the conductive shielding cylinder is arranged in the busbar cylinder in sections.

Embodiment 7 of the high-voltage busbar in the present invention:

The difference between this embodiment and Embodiment 1 lies in that in Embodiment 1, the support member is arranged in the space between the conductive shielding cylinder and the busbar cylinder. In this embodiment, however, the support member is disposed between the two axial ends of the conductive shielding cylinder and the flange of the cylinder.

Embodiment 8 of the high-voltage busbar in the present invention:

The difference between this embodiment and Embodiment 1 lies in that in Embodiment 1, a conductive shielding cylinder is arranged inside the busbar cylinder. However, in this embodiment, conductive shielding plates distributed on the inner side of the cylinder wall of the busbar cylinder along the circumferential direction of the busbar cylinder are arranged in the busbar cylinder.

An embodiment of a noise suppression component of a bus barrel in the present invention is the noise suppression component in any embodiment of the above-mentioned high-voltage bus, and will not be repeated here.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the description and accompanying drawings of the present invention, All should be included in the protection scope of the present invention in the same way.

Claims (10)

1. A noise suppression assembly for a busbar cylinder, characterized in that: it includes a conductive shielding cylinder (5) for being arranged in the busbar cylinder (1) or for distributing in the circumferential direction of the busbar cylinder (1) The conductive shielding plate inside the tube wall of the bus cylinder (1), the conductive shielding tube (5) or the conductive shielding plate is distributed with sound absorption holes (51), and the conductive shielding tube (5) or the conductive shielding plate is provided with There is a support (6), and the support (6) is used to form an interval between the conductive shielding cylinder (5) or the conductive shielding plate and the cylinder wall of the busbar cylinder (1), and the interval is jointly formed with the sound absorption hole (51) Resonant sound-absorbing structure; between the conductive shielding cylinder (5) or the conductive shielding plate and the busbar cylinder (1) is provided with a conductive shielding cylinder (5) or the conductive shielding plate and the busbar cylinder (1) conductively connected Conductive connection structure. 2. A noise suppression assembly for a busbar cylinder according to claim 1, characterized in that: the conductive connection structure is arranged in the gap between the conductive shielding cylinder (5) and the busbar cylinder (1). 3. A noise suppression assembly for a bus bar barrel according to claim 2, characterized in that: the support member is a threaded support (61), and the support (61) is threaded with a support A head (62), the top surface of the support head (62) is a curved surface for supporting the inner wall of the busbar cylinder (1). 4. The noise suppressing assembly of a bus bar cylinder according to claim 3, characterized in that: the support (61) is fixed on the outer peripheral surface of the conductive shielding cylinder (5). 5. The noise suppression component of a bus bar cylinder according to claim 3, characterized in that: the support (61) and the support head (62) are made of conductive material, and the conductive connection structure is composed of the support (61 ) and support head (62) form. 6. A noise suppression assembly for a bus bar cylinder according to claim 1 or 2, characterized in that: the conductive shielding cylinder (5) is an elastically bendable flexible cylinder. 7. The noise suppression component of a bus bar cylinder according to claim 1 or 2, characterized in that: the conductive shielding cylinder (5) or the conductive shielding plate is made of metal. 8. The noise suppressing assembly of a bus bar cylinder according to claim 7, characterized in that: the conductive shielding cylinder (5) or the conductive shielding plate is made of aluminum. 9. A high-voltage busbar, characterized in that it comprises a busbar barrel (1) and a noise suppression assembly for the busbar barrel (1) according to any one of claims 1 to 8. 10. The high-voltage busbar according to claim 9, characterized in that: the high-voltage busbar includes a central conductor (3) arranged in the busbar barrel body and high-pressure air chamber partitions (2) arranged at both ends of the busbar barrel body (1), The central conductor (3) is connected to the high-pressure gas chamber partition (2), and a shielding cover (4) is provided at the junction with the high-pressure gas chamber partition (2), and at least a part of the shielding cover (4) is covered by The conductive shielding cylinder (5) or the conductive shielding plate shields radially along the high-voltage busbar cylinder.

Images