Compact large-deflection-angle contact system and high-voltage equipment

Abstract

The invention particularly relates to a compact large-deflection-angle contact system and high-voltage equipment. The contact system comprises a contact base and a plug conductor, wherein a contact grid and a clamp spring are arranged at the front end of the contact base, and the plug conductor is matched with the contact base; the contact grid comprises a pressure-bearing ring, a forming ring and a plurality of combination bodies of conducting strips and elastic bodies, wherein each conducting strip is arranged on the forming ring in a sleeving manner, and an annular structure is formed in the contact seat; the conducting strips are connected with one ends of the corresponding elastic bodies; the other end of the elastic body is contacted with the pressure-bearing ring; wherein the snap spring is arranged on the outer side of the pressure-bearing ring and used for limiting the pressure-bearing ring. According to the structure, current can reliably pass through the two conductors connected with the contact grid when the center deflection angle theta of the two conductors is larger than 3.5 degrees to 15 degrees, and meanwhile the size is small.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power transmission and distribution technology, specifically to a compact contact system with a large deflection angle, and a high-voltage device using the compact contact system with a large deflection angle. Background Technology

[0002] In related technologies, high-voltage equipment, such as air-insulated or SF6-insulated high-voltage equipment, generally includes a grounded metal casing, a conductor through which a high-voltage current flows, and insulators to support the conductor and insulate it from the grounded casing. Considering that high-voltage equipment needs to connect to different devices at varying distances, the conductor needs to be manufactured in segments. To ensure a reliable connection between two conductors and the passage of large currents, the two conductors are generally connected by contacts. These contacts can be used to pass transition currents.

[0003] When two conductors are connected by a plug-in method, the contact, as the intermediate conductor, is generally made of a ring-shaped object of uniform thickness. It is necessary to ensure that the two conductors are concentric. Only when the two conductors and the conductive contact are concentric can a reliable electrical connection be formed between the two conductors. This avoids the situation where the connection is burned due to local overheating, which would damage the entire device.

[0004] However, in practical applications, misalignment generally occurs due to the following reasons: 1) natural sag of the conductor due to its own weight; 2) thermal expansion and contraction causing conductor deformation and resulting in a certain axial deflection angle; 3) misalignment of the outer casing conductors during installation, pulling on the center conductor and causing deflection angle; 4) electrodynamic force generated by the current flowing through the conductors during operation, causing conductor vibration and resulting in changes in the deflection angle between the conductors; 5) foundation settlement causing deflection angle between the conductors; 6) conductor vibration during natural disasters such as earthquakes, leading to an increase in the deflection angle between the two conductors. Considering the above factors, although some deflection angles are transient, due to the rigidity of the conductor and the brittle nature of the insulating materials supporting the conductor (such as filled epoxy resin or ceramic), this transient force can still momentarily damage the conductor support, leading to the destruction of the equipment insulation.

[0005] Most existing conductive contact devices have a permissible deflection angle of 0.5°. Additionally, some conductive contact products allow for a deflection angle of 2.5°, or even a maximum of 3.5°. However, considering the required service life of the product and the need to withstand different environmental changes, the actual requirements for conductive contacts necessitate a larger deflection angle design.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include prior art information known to those skilled in the art, but does not contain any content that is misleading. Summary of the Invention

[0007] This invention provides a compact contact system with a large deflection angle, and a high-voltage device using this compact contact system with a large deflection angle; it enables a large deflection angle between two conductors connected by the contact structure and makes the device structure compact, thereby effectively overcoming the defects existing in the prior art to a certain extent.

[0008] Other features and advantages of the invention will become apparent from the following detailed description, or may be learned in part by practice of the invention.

[0009] According to a first aspect of the present invention, a compact contact system with a large deflection angle is provided, comprising: a contact seat having a contact grid and a retaining spring at its front end, and a plug conductor cooperating with the contact seat; The contact grid includes: a pressure-bearing ring, a forming ring, and an assembly of multiple conductive sheets and elastomers; wherein each conductive sheet is sleeved on the forming ring and forms a ring-shaped structure inside the contact seat; one end of the conductive sheet is connected to one end of the corresponding elastomer; the other end of the elastomer is in contact with the pressure-bearing ring; The retaining ring is located on the outside of the pressure ring and is used to limit the movement of the pressure ring.

[0010] In some exemplary embodiments, the conductive sheet has a pentagonal structure, and the conductive sheet includes a first inclined surface, a second inclined surface, a third inclined surface, a fourth inclined surface, and a fifth inclined surface connected in sequence; The first contact point between the second and third inclined surfaces is used to contact the outer wall of the plug conductor; The fourth or fifth inclined surface is provided with a mounting part that cooperates with the elastic body and is used to fix the elastic body; The fifth inclined surface is positioned facing the inner wall of the contact seat; and when the plug conductor is not inserted into the contact seat, the fifth inclined surface is positioned at a first angle to the horizontal axis. The second contact point between the first and fifth inclined surfaces is used to maintain contact with the inner wall of the contact seat.

[0011] In some exemplary embodiments, the second angle between the extension line of the second inclined plane and the horizontal axis direction, and the third angle between the extension line of the third inclined plane and the horizontal axis direction, are of different sizes. The second and third included angles are each greater than or equal to 1.5 times the system's preset deflection angle.

[0012] In some exemplary embodiments, the first contact point and the second contact point between the first inclined surface and the fifth inclined surface are respectively arc-shaped; The cross-section of the second and / or third inclined plane is preferably arc-shaped or straight.

[0013] In some exemplary embodiments, the placement portion on the fourth inclined surface of the conductive sheet is a groove structure; the groove structure is used for pressing and fixing the elastic body, or is provided with a rubber adhesive layer; the elastic body is an elliptical plate spring, a spiral column compression spring, or an irregularly shaped plate spring; Alternatively, the mounting portion on the fourth or fifth inclined surface of the conductive sheet is a protruding structure; the elastic body is a compression spring with a helical columnar structure.

[0014] In some exemplary embodiments, the center of the conductive sheet is provided with a circular hole that matches the molding ring; the molding ring is provided with an opening for preventing the generation of eddies inside. The inner wall at the front end of the contact seat is provided with a retaining circlip groove for assembling a retaining circlip and an assembly groove for assembling a contact grid, arranged sequentially from top to bottom. The depth of the snap ring groove is greater than the depth of the assembly groove.

[0015] In some exemplary embodiments, the pressure ring is made of aluminum alloy and its surface is anodized or has a metal conductive coating. The outer diameter of the pressure ring is slightly smaller than the outer diameter of the conductive sheet of the contact grid; The inner diameter of the pressure-bearing ring is larger than the outer diameter of the arc formed by the first contact point of the conductive sheet; The pressure ring has an opening groove along its circumference for limiting the elastomer; as an extension, the outer edge of the opening groove is higher than the inner edge, for inserting the lower part of the fifth inclined surface of the conductive sheet and for sharing the current.

[0016] In some exemplary embodiments, the free length Lc of the contact grid is greater than the gap Ld between the blocking wall and the snap ring in the contact seat.

[0017] In some exemplary embodiments, the deflection angle of the contact system is 3.5° to 15°.

[0018] According to a second aspect of the invention, a high-voltage device is provided, comprising a compact contact system with a large deflection angle as described in the first aspect.

[0019] The compact contact system with a large deflection angle provided by the embodiments of the present invention features a retaining spring positioned on the outside of the contact grid at the front end of the contact seat. Multiple conductive sheets are fitted onto a forming ring, forming a circular structure within the contact seat. One end of an elastomer is connected to the corresponding conductive sheet, and the other end contacts a pressure ring, allowing the retaining spring to limit the pressure ring. By positioning the elastomer between the conductive sheet and the pressure ring and providing a limiting effect, the stability of the conductive sheet and elastomer structure is ensured, preventing separation. Positioning the retaining spring on the outside of the contact grid allows it to apply a preload to the contact grid, ensuring a reliable connection between the conductive sheet and the contact seat, and maintaining a certain angle between the conductive sheet and the conductive surface of the contact seat, providing a gap for the inserted plug conductor. This ensures reliable current flow when the two conductors connected by the contact grid have a center deflection angle θ greater than 3.5 degrees and between 15 degrees. Simultaneously, the contact system has a relatively compact structure, forming a smaller-sized conductive contact.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0022] Figure 1 This diagram schematically illustrates the structure of a compact contact system with a large deflection angle, an exemplary embodiment of the present invention. Figure 2 This schematic diagram illustrates a contact grid structure according to an exemplary embodiment of the present invention. Figures 3a-3c A schematic diagram illustrating the structure of a conductive sheet in an exemplary embodiment of the present invention is shown. Figure 4 schematically illustrates the structure of an elastomer in an exemplary embodiment of the present invention; Figure 5 This schematic diagram illustrates a pressure-bearing ring structure according to an exemplary embodiment of the present invention. Figure 6 This schematic diagram illustrates an enlarged view of a partial structure of a contact system in an exemplary embodiment of the present invention. Figure 7 This diagram schematically illustrates the current flow of a contact system in an exemplary embodiment of the present invention.

[0023] Reference numerals: 1. Contact base; 2. Plug conductor; 3. Contact grid; 4. Snap ring; 5. Round hole; 11. Conductive sheet; 12. Molding ring; 13. Elastomer; 14. Pressure ring. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the invention will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] Furthermore, the accompanying drawings are merely illustrative of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0026] In view of the shortcomings and deficiencies of the prior art, this example embodiment provides a compact contact system with a large deflection angle.

[0027] The compact contact system with a large deflection angle in this exemplary embodiment will now be described in more detail with reference to the accompanying drawings and embodiments.

[0028] In this example implementation, refer to Figure 1 As shown, the compact contact system with a large deflection angle includes a contact base 1 and a plug conductor 2 that mates with the contact base 1. A retaining ring 4 and a contact grid 3 are arranged sequentially from top to bottom at the front end of the contact base 1. The contact system provided by this invention allows current to reliably pass through the two conductors connected by the contact grid 3 when their center deflection angle θ is greater than 3.5 degrees and between 15 degrees.

[0029] refer to Figure 2 As shown, the contact grid 3 includes: a pressure-bearing ring 14, a forming ring 12, and multiple conductive sheets 11 and elastomers 13; wherein, each conductive sheet 11 is sleeved on the forming ring 12 and forms a ring-shaped structure within the contact seat; one end of the conductive sheet 11 is connected to one end of the corresponding elastomer 13; the other end of the elastomer 13 contacts the pressure-bearing ring 14. A retaining ring 4 is disposed on the outside of the pressure-bearing ring 14 to limit the movement of the pressure-bearing ring 14.

[0030] For example, the number of conductive sheets 11 can be configured according to the required current magnitude. Specifically, referring to Figure 3, a circular hole K is provided in the center of the conductive sheet, and all conductive sheets 11 pass through the circular hole K onto the circular forming ring 12. For each conductive sheet 11, a corresponding elastic body 13 is assigned; one end of the elastic body 13 is connected to the conductive sheet 11, and the other end of the elastic body 13 is pressed against the circular pressure bearing ring 14 to form a contact grid 3.

[0031] For example, refer to Figure 3a As shown, the conductive sheet 11 has an approximately pentagonal structure, including a first inclined surface AB, a second inclined surface BC, a third inclined surface CD, a fourth inclined surface DE, and a fifth inclined surface AE connected in sequence. The first contact point between the second and third inclined surfaces is used to contact the outer wall of the plug conductor 2; the fourth or fifth inclined surface has a mounting portion that cooperates with the elastic body 13 and is used to fix the elastic body 13; the fifth inclined surface faces the inner wall of the contact seat 1; and when the plug conductor 2 is not inserted into the contact seat 1, the fifth inclined surface forms a first angle with the horizontal axis; the second contact point between the first and fifth inclined surfaces is used to maintain contact with the inner wall of the contact seat 1.

[0032] For example, the second angle between the extension line of the second inclined plane and the horizontal axis direction, and the third angle between the extension line of the third inclined plane and the horizontal axis direction, are different in size; the second angle and the third angle are respectively greater than or equal to 1.5 times the system preset deflection angle.

[0033] For example, the first contact point and the second contact point between the first inclined surface and the fifth inclined surface are respectively arc-shaped; the cross-section of the second inclined surface and / or the third inclined surface is preferably arc-shaped, but may also be a straight line.

[0034] Specifically, refer to Figure 3a As shown, the conductive sheet 11 has an approximately pentagonal structure with a groove FGIH on the inclined surface DE. This groove is used to press and fix the elastomer 13, allowing one end of the elastomer 13 to be embedded into it. The shape of the groove FGIH compresses the elastomer 13, thus fixing it based on mechanical stress. Alternatively, a rubber adhesive layer can be placed in the groove for adhesive fixation. Furthermore, the groove FGIH can be trapezoidal, with the length of the FH side different from the length of the GI side (e.g., the length of the FH side can be shorter than the length of the GI side), allowing the elastomer to be stably embedded in the groove.

[0035] On the conductive sheet 11, angles A and C (i.e., the first contact point and the second contact point) are rounded angles. Angle A is the support point between the conductive sheet 11 and the contact seat 1, angle C is the contact point between the conductive sheet 11 and the plug conductor 2, and point C is the highest point of the conductive sheet 11. When the conductive sheet 11 is normally placed on the contact seat 1, edge AE has an angle α with the horizontal axis, which is used to ensure that the conductive sheet 11 has downward movement space when point C is compressed.

[0036] The angle between the extension of side BC and the horizontal axis is β, and the angle between the extension of side DC and the horizontal axis is γ. The two angles β and γ are generally different, but both must be more than 1.5 times the allowable angle of the contact system.

[0037] For example, the angle between the extension of side BC and the horizontal axis is β, and the angle between the extension of side DC and the horizontal axis is γ. The angles β and γ are generally different, but both must be greater than 1.5 times the allowable angle of the contact system. For instance, if the contact system allows a deflection of 6 degrees, then both angles β and γ must be greater than 9 degrees. This ensures that the entire contact system design meets the requirements. Of course, the angles β and γ should not be too large, otherwise the C-angle will be too sharp, which is detrimental to the current-carrying capacity of the conductive sheet 11. The optimal angle can be set between 1.5 and 2.5 times the allowable angle of the contact system.

[0038] In a preferred embodiment, to facilitate the insertion of the plug conductor 2, the inclined surfaces BC and DC can be made into large arc shapes.

[0039] By using the deflection angle α at point A of conductive sheet 11, combined with the deflection angles β and γ on both sides of point C, the three angles work together to allow for a large difference in the eccentric angle between the plug conductor 2 and the contact seat 1 conductor.

[0040] For example, the conductive sheet can be a copper-based silver-plated sheet with a thickness of 3 mm.

[0041] For example, when the mounting portion on the conductive sheet is a groove structure, the elastomer can be an elliptical leaf spring ring, a circular elastomer, an irregularly shaped leaf spring, a compression spring with a helical column structure, or a special rubber.

[0042] Alternatively, if the placement portion on the conductive sheet is a raised FGIH structure on the DE side or a raised FGIH structure on the AE side, then the corresponding elastic body can be a helical cylindrical spring.

[0043] For example, the elastomer 13 is preferably an elliptical open ring formed by bending a leaf spring. The distance L1 between points R and S on it should be slightly greater than the distance between points H and I on the conductive sheet 11. When the elliptical leaf spring of the elastomer 13 is inserted into the notch of the conductive sheet 11, it should be an interference fit so that the elastomer 13 will not fall out during use. For example, if the thickness of the conductive sheet 11 is 3 mm, the width of the leaf spring used for the elastomer 13 should not be greater than 3 mm, preferably 2.5 mm. This shape can easily provide force in multiple directions and has a small size.

[0044] In addition, a closed elliptical ring can be used as the elastomer 13, thereby increasing the elasticity of the elastomer 13.

[0045] Alternatively, the elastomer 13 can be a helical compression spring, such as... Figure 4b As shown, its outer diameter should be less than 3 mm, and it must fit tightly with the F and G lengths of the conductive sheet 11. Correspondingly, the conductive sheet is as follows: Figure 3b or Figure 3c As shown, the spiral column compression spring can be fixed by fitting it onto the protrusion FGIH.

[0046] Alternatively, the elastomer 13 can be a shaped leaf spring, such as... Figure 4c As shown, the distance between points R and S on one end of the spring 13 and L1 should be slightly greater than the distance between points H and I on the conductive sheet 11. When the elliptical leaf spring of the elastic body 13 is inserted into the notch of the conductive sheet 11, it should be an interference fit, and the width of the leaf spring used should not be greater than 3 mm.

[0047] Or, such as Figure 4d As shown, the elastomer 13 can be a circular spring coil, which can be open or closed.

[0048] Alternatively, the elastomer 13 can be made of a special rubber, and its shape is a circular or elliptical sheet with a thickness of less than 3 mm. It is then glued to the notch of the groove FGIH of the conductive sheet 11 with rubber.

[0049] For example, the forming ring 12 is generally provided with an opening, so as to prevent abnormal heating caused by eddy currents generated inside the forming ring during equipment operation.

[0050] For example, the forming ring 12 can be formed by bending a circular open spring steel wire, typically made of stainless steel or 65 manganese steel wire, with a diameter of 1.5 to 5 mm.

[0051] For example, refer to Figure 5As shown, the outer edge of the pressure-bearing ring 14 is slightly smaller than the outer diameter of the conductive sheet 11 of the contact grid 3; the inner diameter of the pressure-bearing ring 14 is larger than the outer diameter of the arc formed by the first contact point of the conductive sheet 11; the pressure-bearing ring 14 is provided with an opening groove along the circumference for limiting the elastic body 13. Preferably, the height of the outer edge of the opening groove can be greater than the height of the inner edge, and it is inserted under the conductive sheet to share the current, thereby improving the contact performance.

[0052] The functions of the pressure ring 14 include the following: 1) limiting the position of the elastic body 13 and ensuring the shape of the contact grid 3 remains unchanged in conjunction with the molding ring 12; 2) bearing the pressure of the elastic body 13. Because the retaining ring 4 is tightly clamped in the retaining ring groove of the contact seat 1 to maintain its position, the retaining ring 4 provides an equal reaction force to the pressure ring 14 to maintain its position under the action of force; 3) when the outer diameter R1 of the pressure ring 14 is tightly fitted with the inner diameter of the contact seat 1 where the contact grid 3 is mounted, and the pressure ring 14 is made of silver-plated material and La is long enough to have the opportunity to contact the fifth inclined surface of the conductive sheet 11, the pressure ring 14 can also bypass part of the current to the contact seat 1 during operation or testing, thus increasing the current carrying capacity.

[0053] For example, the pressure ring 14 can be made of aluminum alloy or plastic and subjected to hard anodizing treatment. The pressure ring is preferably anodized aluminum alloy, but it can also be a metal with a silver plating layer.

[0054] Alternatively, to increase conductivity, the pressure ring 14 can be made of silver-plated metal, and the length La of the pressure ring 14 can be increased so that the pressure ring 14 and the fifth bevel of the conductive sheet 11 can communicate after the plug conductor 2 is inserted.

[0055] For example, the inner wall of the front end of the contact seat 1 is provided with a retaining ring groove for assembling the retaining ring 4 and an assembly groove for assembling the contact grid 3, arranged sequentially from top to bottom; wherein the depth of the retaining ring groove is greater than the depth of the assembly groove.

[0056] Specifically, the retaining ring 4 confines the contact grid within the contact seat 1. The retaining ring 4 also restricts the contact grid 3 from extending its length when compressed.

[0057] Specifically, the plug conductor 2 compresses point C of the conductive piece 11, the conductive piece 11 squeezes the elastic body 13, the elastic body 13 compresses the pressure ring 14, and the pressure ring 14 provides a reverse thrust by the limiting force of the retaining spring 4, so that all parts of the contact grid 3 maintain stable force, and that there is always a certain force between the conductive piece 11 and the plug conductor 2, thereby maintaining reliable current flow. Under the action of force, refer to Figure 7 As shown, point A of the conductive sheet 11 is always in contact with the contact base 1. In this way, the current flows through the plug conductor 2 to point C of the conductive sheet 11, then from point C to point A, and then from point A to the contact base 2, forming a conductive circuit.

[0058] For example, in the case of a contact grid, during device assembly, the conductive sheet 11 and the elastomer 13 are preferably connected by a crimping method to minimize the risk of the two parts falling off. Specifically, the distance L1 between the RS points in the elastomer 13 can be slightly larger than the distance between the HI points of the conductive sheet 11. By compressing the elastomer 13 into the FIHG opening of the conductive sheet 11, the elasticity of the elastomer 13 itself can make the conductive sheet 11 and the elastomer 13 a single unit. Then, all the assemblies of conductive sheets 11 and elastomer 13 can be threaded through the circular holes K on the conductive sheets 11 onto the circular forming ring 12. Finally, the other end of the elastomer 13 is pressed tightly against the opening of the circular bearing ring 14 to form the contact grid 3.

[0059] The other end of the elastomer 13 can be pressed into the opening of the pressure ring 14, or it can be pressed tightly against the pressure ring 14, using only the pressure ring 14 to ensure that the contact grid 3 remains circular. Additionally, refer to... Figure 5 , Figure 6 As shown, the cross-section of the pressure ring 14 can be a C-shaped opening or a U-shaped opening; or, it can be an L-shaped cross-section, used only to maintain the circular structure of the contact grid 3.

[0060] The free length of the contact grid 3 is Lc, which can be slightly longer than the gap Ld between the blocking wall in the contact seat 1 and the retaining spring 4 after installation. Thus, when the contact grid 3 is installed in the contact seat 1 and the retaining spring 4 is installed, the retaining spring 4 applies a preload to the contact grid 3, ensuring a reliable connection between point A of the conductive piece 11 of the contact grid 3 and the contact seat 1, and maintaining the α angle between the conductive piece 11 and the conductive surface of the contact seat 1, providing the gap for the insertion plug conductor 2. Simultaneously, the retaining spring 4 restricts the contact grid 3 from extending its length under pressure.

[0061] For example, refer to Figure 7 As shown, the plug conductor 2 is inserted into the ring formed at the C end of the conductive sheet 11 to form a conductive circuit through the contact grid 3 to the contact seat 1.

[0062] Specifically, the plug conductor 2 compresses point C of the conductive sheet 11, the conductive sheet 11 squeezes the elastic body 13, the elastic body 13 compresses the pressure ring 14, and the pressure ring 14 provides a reverse thrust by the limiting of the retaining spring 4. The forming ring 12 ensures that the conductive sheet 11 does not flip, so that all parts of the entire contact grid 3 maintain stable force and that there is always a certain force between the conductive sheet 11 and the plug conductor 2. This ensures reliable current flow.

[0063] Under the action of force, point A of the conductive piece 11 always remains in contact with the contact seat 1. In this way, the current flows through the plug conductor 2 to point C of the conductive piece 11, then from point C to point A, and then from point A to the contact seat 1, forming a conductive circuit.

[0064] By designing the conductive sheet into a pentagonal structure, and ensuring that the deflection angle α at point A of the conductive sheet 11, combined with the deflection angles β and γ on both sides of point C, allows for a relatively large misalignment angle θ between the plug conductor 2 and the contact seat 1 conductor, satisfying an angle greater than or equal to 3.5° and less than or equal to 15°. Simultaneously, this achieves the goal of miniaturizing the contact system.

[0065] As an example, the present invention also provides a high-voltage device. The high-voltage device may be equipped with a compact contact system with a large deflection angle as described in the above embodiments.

[0066] For example, high-voltage equipment can be air-insulated high-voltage equipment or SF6-insulated high-voltage equipment. It generally includes a grounded metal casing, a conductor through which a high-voltage current flows, and insulators used to support the conductor and insulate the conductor from the grounded casing.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0068] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0069] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A compact contact system with a large deflection angle, characterized in that, include: A contact seat (1) with a contact grid (3) and a snap ring (4) at the front end, and a plug conductor (2) that cooperates with the contact seat (1); The contact grid (3) includes: a pressure-bearing ring (14), a forming ring (12), and a combination of multiple conductive sheets (11) and an elastomer (13); wherein each conductive sheet (11) is sleeved on the forming ring (12) and forms a ring-shaped structure in the contact seat; one end of the conductive sheet (11) is connected to the corresponding elastomer (13); the other end of the elastomer (13) is in contact with the pressure-bearing ring (14); The retaining ring (4) is located on the outside of the pressure ring (14) and is used to limit the pressure ring (14).

2. The compact contact system with a large deflection angle according to claim 1, characterized in that, The conductive sheet (11) has a pentagonal structure and includes a first inclined surface, a second inclined surface, a third inclined surface, a fourth inclined surface and a fifth inclined surface connected in sequence. The first contact point between the second and third inclined surfaces is used to contact the outer wall of the plug conductor (2); The fourth or fifth inclined surface is provided with a mounting part that cooperates with the elastic body (13) and is used to fix the elastic body (13); The fifth inclined surface is set facing the inner wall of the contact seat (1); and when the plug conductor (2) is not inserted into the contact seat (1), the fifth inclined surface is set at the first angle with the horizontal axis direction; The second contact point between the first inclined surface and the fifth inclined surface is used to maintain contact with the inner wall of the contact seat (1).

3. The compact contact system with a large deflection angle according to claim 2, characterized in that, The second angle between the extension of the second inclined plane and the horizontal axis, and the third angle between the extension of the third inclined plane and the horizontal axis, are different in size. The second and third included angles are each greater than or equal to 1.5 times the system's preset deflection angle.

4. The compact contact system with a large deflection angle according to claim 2, characterized in that, The first contact point and the second contact point between the first inclined surface and the fifth inclined surface are respectively arc-shaped; The cross-section of the second and / or third inclined planes is either circular or straight.

5. The compact contact system with a large deflection angle according to claim 2, characterized in that, The placement part on the fourth inclined surface of the conductive sheet (11) is a groove structure; the groove structure is used for pressing and fixing the elastic body (13), or is provided with a rubber adhesive layer; the elastic body (13) is an elliptical plate spring, a spiral column compression spring, or an irregularly shaped plate spring; Alternatively, the placement portion on the fourth or fifth inclined surface of the conductive sheet (11) is a protruding structure; the elastic body (13) is a compression spring with a spiral column structure.

6. The compact contact system with a large deflection angle according to claim 2, characterized in that, The conductive sheet (11) has a circular hole at its center that matches the molding ring (12); the molding ring (12) has an opening to prevent eddy currents from being generated inside. The inner wall of the front end of the contact seat (1) is provided with a snap ring groove for assembling snap ring (4) and an assembly groove for assembling contact grid (3) in sequence from top to bottom; The depth of the snap ring groove is greater than the depth of the assembly groove.

7. The compact contact system with a large deflection angle according to claim 1, characterized in that, The pressure ring (14) is preferably made of aluminum alloy and its surface is anodized, or it may be provided with a metal conductive coating. The outer diameter of the pressure ring (14) is slightly smaller than the outer diameter of the conductive sheet (11) of the contact grid (3); The inner diameter of the pressure ring (14) is larger than the outer diameter of the arc formed by the first contact point of the conductive sheet (11); The pressure ring (14) is provided with an opening groove along the circumference for limiting the elastic body (13); as an extension scheme, the outer edge height of the opening groove is greater than the inner edge height, which is used to insert the fifth inclined surface of the conductive sheet (11) to share the current.

8. The compact contact system with a large deflection angle according to claim 1, characterized in that, The free length Lc of the contact grid (3) is greater than the gap Ld between the blocking wall and the snap ring (4) in the contact seat (1).

9. The compact contact system with a large deflection angle according to claim 1, characterized in that, The deflection angle of the contact system is 3.5° to 15°.

10. A high-voltage device, characterized in that, Including the compact contact system with a large deflection angle as described in any one of claims 1-9.

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