Top expansion bus connector with adjustable center distance

Abstract

The invention relates to the technical field of cable or wire installation, and provides a center-distance-adjustable top expansion bus connector, which comprises a shielding layer mechanism, a bus, wheelbase-adjustable modules, an arc suppression module and a heat dissipation module, and is characterized in that the wheelbase-adjustable modules are arranged at the two ends, close to the shielding layer mechanism, of the bus; the arc suppression module and the heat dissipation module are respectively arranged in the shielding layer mechanism and the bus; the wheelbase-adjustable module is used for adjusting the position of a bus connecting conductor so as to adjust the contact distance between the shielding layer mechanism and the connecting conductor in the bus, the heat dissipation module is used for dissipating heat in the shielding layer mechanism and the bus to the outside, and the arc suppression module is arranged at the connecting position of the shielding layer mechanism and the bus. According to the invention, through the cooperation of the adjustable wheelbase module and the arc suppression module, the center distance error between the bus and the joint is corrected, the phenomena of arc and partial discharge caused by poor contact are reduced, and the stability and reliability of electrical performance are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable or wire installation, and in particular to a top-expanded busbar connector with adjustable center distance. Background Art

[0002] Currently, PLUS busbar connectors are used for the extended connection of the top-out busbar bushings of SF6 switchgear. The spacing is pre-designed and manufactured according to the design. However, in actual production, due to different deformation amounts during the splicing process of the SF6 switchgear, the actual spacing has deviations of different lengths.

[0003] For example, the Chinese patent CN215451817U discloses an inflatable cabinet top extension high-voltage busbar connector, which has a right-angle four-way connector and a T-shaped connector. The connector has an insulating layer to achieve good insulation effect. When in use, the inner cavity is sealed, reducing the risk of fire caused by leakage and improving the safety factor of the equipment. Combined with a flexible cable shielded busbar, the right-angle four-way connector and the T-shaped connector can be arranged in a straight line, but the center distance adjustment is ignored, resulting in the inability to flexibly adapt to the center distance error. At the same time, the heat dissipation efficiency is limited and cannot meet the heat dissipation requirements in high-voltage scenarios.

[0004] In addition, the prior art also has the following defects: 1. When multiple gas boxes are connected in parallel, the center distance deviation is inevitable due to manufacturing error or installation error. The busbar connector with traditional fixed structure is difficult to match and is prone to jamming, misalignment or poor contact.

[0005] 2. Poor contact can cause partial discharge, arcing, heating, reduce electrical performance and shorten product life, and may even cause explosion and fire.

[0006] 3. Traditional connectors are bulky, time-consuming and labor-intensive to assemble, and easily scratched or slipped, increasing construction difficulty and labor costs.

[0007] 4. The thermal effect generated by the busbar during high current operation may cause overheating of the contact points and accelerate aging.

[0008] The present invention is made to solve the common problems in the field such as poor adaptability of center distance error, limited heat dissipation capacity, high installation complexity, high performance risks, etc. Summary of the invention

[0009] The purpose of the present invention is to propose a top-expanded busbar connector with adjustable center distance in view of the existing deficiencies.

[0010] In order to overcome the shortcomings of the prior art, the present invention adopts the following technical solutions: An adjustable center distance top expansion busbar connector, the adjustable center distance top expansion busbar connector comprising a shielding layer mechanism, a busbar, an adjustable wheelbase module, an arc suppression module and a heat dissipation module, the adjustable wheelbase module being arranged at both ends of the busbar close to the shielding layer mechanism, the arc suppression module and the heat dissipation module being arranged in the shielding layer mechanism and the busbar respectively; The adjustable wheelbase module adjusts the shielding layer mechanism and the connecting conductor position in the busbar respectively to adjust the contact spacing between the shielding layer mechanism and the connecting conductor in the busbar, the heat dissipation module dissipates the heat in the shielding layer mechanism and the busbar to the outside, and the arc suppression module is arranged at the connecting position of the shielding layer mechanism and the busbar; Among them, the adjustable wheelbase module includes a spacing adjustment unit and a locking and retreating unit. The spacing adjustment unit is respectively arranged on the busbar and linearly adjusts the position of the busbar connecting conductor. The locking and retreating unit is arranged on the busbar to detachably assemble the busbar on the shielding layer mechanism.

[0011] Optionally, the heat dissipation module includes a heat dissipation unit and a conduction unit, wherein the conduction unit is arranged on the peripheral side of the shielding layer mechanism connecting conductor and transmits the heat generated by the shielding layer mechanism connecting conductor to the heat dissipation unit, and the heat dissipation unit dissipates the heat conducted by the conduction unit to the outside; Wherein, the heat dissipation unit is arranged on the outer wall of the shielding layer mechanism.

[0012] Optionally, the arc suppression module includes an inner shielding layer rubber sleeve, a busbar rubber sleeve, an electric field uniformity component, an insulating protection component and an arc absorption component, the inner shielding layer rubber sleeve is provided with a storage cavity for placing the shielding layer mechanism connecting conductor, the busbar rubber sleeve is provided with a connecting cavity for placing the busbar connecting conductor, the electric field uniformity component is arranged on the shielding layer mechanism connecting conductor and the busbar connecting conductor, the insulating protection component is arranged on the surrounding side of the shielding layer mechanism connecting conductor and the busbar connecting conductor, and isolates the shielding layer mechanism from the inner shielding layer rubber sleeve, and isolates the busbar connecting conductor from the busbar rubber sleeve, and the arc absorption component is on the surrounding side of the shielding layer mechanism connecting conductor and the busbar connecting conductor to eliminate the generated arc.

[0013] Optionally, the shielding layer mechanism and the busbar are interference matched; Wherein, transfer terminals are arranged at both ends of the busbar.

[0014] Optionally, the spacing adjustment unit includes a connecting rod, a power supply line, a pushing member, and a sliding track, wherein the sliding track is arranged in the connecting cavity, one end of the connecting rod is slidably connected to the sliding track, and the other end of the connecting rod is connected to the power supply line to form a power supply part; Wherein, the sliding track and the pushing component are both made of ceramic material.

[0015] Optionally, the locking and stopping unit comprises a limiting card and a limiting seat, the limiting card is symmetrically arranged on the outer wall of the busbar rubber sleeve, the limiting seat is arranged on the outer wall of the busbar rubber sleeve and the limiting seat body is provided with a clamping cavity; Wherein, the limiting card and the limiting seat are detachably connected to each other.

[0016] Optionally, a conductive part and an arc extinguishing part are provided on the contact end surfaces of the shielding layer structure connecting conductor and the busbar connecting conductor, and the conductive part and the arc extinguishing part are arranged adjacent to each other and at equal intervals along the circumference of the contact end surfaces of the shielding layer structure connecting conductor and the busbar connecting conductor.

[0017] Optionally, the electric field uniformity component includes an electric field adjustment cover and a conductive coating, the electric field adjustment cover is arranged on the contact end surface of the shielding layer structure connecting conductor and the busbar connecting conductor, and the conductive coating is coated on the contact end surface of the conductive part.

[0018] Optionally, the insulating protection component includes an insulating coating and an insulating sheath, the insulating coating is applied on the contact end surface away from the shielding layer structure connecting conductor and the busbar connecting conductor to form an insulating part, and the insulating sheath is nested on the outer periphery of the insulating part.

[0019] Optionally, the arc absorbing component includes an arc absorbing layer and an arc guiding groove, the arc guiding groove is arranged on the inner wall surface of the storage cavity, and the arc absorbing layer is arranged on the end surface of the arc extinguishing portion.

[0020] The beneficial effects achieved by the present invention are: 1. Through the coordination of the adjustable wheelbase module and the arc suppression module, the connector can correct the center distance error between the busbar and the connector while effectively reducing arc and partial discharge caused by poor contact, thereby improving the stability and reliability of electrical performance.

[0021] 2. Through the synergistic effect of the arc suppression module and the heat dissipation module, the high temperature generated during the arc suppression process can be quickly conducted and dissipated to the outside, preventing high temperature accumulation from damaging the connector material.

[0022] 3. Through the overall coordination of the adjustable wheelbase module, arc suppression module and heat dissipation module, the connector can achieve the advantages of flexible installation, stable contact, reliable electrical performance, strong high temperature safety and long service life in a variety of complex installation environments.

[0023] 4. Through the overall coordination of the adjustable wheelbase module, arc suppression module and heat dissipation module, the connector can be quickly installed and adjusted under a variety of complex installation conditions, while improving its seismic resistance and impact resistance, ensuring the mechanical stability, electrical safety and thermal stability of the connection components for long-term use, and ultimately making the connector have the advantages of easy installation, efficient contact, long maintenance cycle, strong reliability and wide adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate the same parts.

[0025] Figure 1 It is a schematic diagram of an application scenario of the busbar and shielding layer mechanism of the present invention.

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of point C.

[0027] Figure 3 for Figure 1 Enlarged schematic diagram of the E box in the middle.

[0028] Figure 4 for Figure 1 Enlarged schematic diagram of the F box in the middle.

[0029] Figure 5 It is a schematic diagram of an organic combination scenario of a busbar and a three-way structure or a four-way structure of the present invention.

[0030] Figure 6 for Figure 5 Enlarged schematic diagram of the G box in the middle.

[0031] Figure 7 for Figure 5 Enlarged schematic diagram of the H box in the middle.

[0032] Figure 8 It is a schematic diagram of the four-way structure of the shielding layer mechanism of the present invention.

[0033] Fig. 9 for Figure 8 Enlarged schematic diagram of part B in the middle.

[0034] Fig.10 It is a schematic diagram of the three-way structure of the shielding layer mechanism of the present invention.

[0035] Fig.11 It is a schematic cross-sectional view of the arc absorption layer of the present invention.

[0036] Fig.12 It is a schematic diagram of the appearance of the four-way structure of the shielding layer mechanism of the present invention.

[0037] Fig.13 It is a schematic diagram of the appearance of the three-way structure of the shielding layer mechanism of the present invention.

[0038] Fig.14 It is a schematic structural diagram of the busbar connecting conductor of the present invention.

[0039] Fig.15 It is a cross-sectional schematic diagram of the shielding layer structure of the present invention.

[0040] Fig.16 It is a partial cross-sectional schematic diagram of the pushing member of the present invention.

[0041] Fig.17 for Fig.16 Enlarged schematic diagram of part A in the middle.

[0042] Explanation of the reference numerals: 1. Push rod; 2. Anti-slip pattern; 3. Push seat; 4. Limiting rod; 5. Snap-in groove; 6. Snap-in protrusion; 7. Limiting hole; 8. Heat sink; 9. Temperature-resistant protective layer; 10. Arc extinguishing part; 11. Conductive part; 12. Insulating sheath; 13. Shielding layer mechanism connecting conductor; 14. Four-way structure; 15. Three-way structure; 16. Protective soft cover; 17. Spring; 18. Busbar connecting conductor; 19. Arc guide groove; 20. Heat dissipation and energy absorption base; 21. Conductive energy dissipation layer; 22. Limiting card; 23. Busbar; 24. Limiting seat. DETAILED DESCRIPTION

[0043] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0044] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8, Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 and Fig.16 As shown, this embodiment provides an adjustable center distance top expansion busbar connector, the adjustable center distance top expansion busbar connector includes a shielding layer mechanism, a busbar 23, an adjustable wheelbase module, an arc suppression module and a heat dissipation module, the adjustable wheelbase module is arranged at both ends of the busbar 23 close to the shielding layer mechanism, the arc suppression module and the heat dissipation module are respectively arranged in the shielding layer mechanism and the busbar 23; The adjustable wheelbase module adjusts the positions of the shielding layer mechanism connecting conductor and the busbar connecting conductor respectively to adjust the contact spacing between the shielding layer mechanism connecting conductor and the busbar connecting conductor. The heat dissipation module dissipates the heat in the shielding layer mechanism and the busbar 23 to the outside. The arc suppression module is arranged at the connection position between the shielding layer mechanism and the busbar 23. Among them, the adjustable wheelbase module includes a spacing adjustment unit and a locking and retreating unit. The spacing adjustment units are respectively arranged on the busbar 23 and linearly adjust the position of the busbar connecting conductor 18. The locking and retreating unit is arranged on the busbar 23 and the shielding layer mechanism to enable the shielding layer mechanism and the busbar 23 to be detachably assembled.

[0045] Optionally, the heat dissipation module includes a heat dissipation unit and a conduction unit, wherein the conduction unit is arranged on the peripheral side of the shielding layer mechanism connecting conductor 13 and transfers the heat generated by the shielding layer mechanism connecting conductor to the heat dissipation unit, and the heat dissipation unit dissipates the heat conducted by the conduction unit to the outside; Wherein, the heat dissipation unit is arranged on the outer wall of the shielding layer structure and the busbar 23 .

[0046] Through the synergistic effect of the arc suppression module and the heat dissipation module, the high temperature generated during the arc suppression process can be quickly conducted and dissipated to the outside, preventing high temperature accumulation from damaging the connector material.

[0047] In this embodiment, the heat dissipation unit includes a heat dissipation area and a heat dissipation seat 8 arranged in the heat dissipation area. The outer wall surface of the heat dissipation seat 8 facing the outside is provided with heat dissipation fins, and the heat dissipation seat 8 is made of an integrally cast ceramic material. The heat dissipation seat 8 is made of an integrally cast high thermal conductivity ceramic material (such as alumina ceramic) to improve thermal conductivity efficiency and high temperature resistance. The heat conducting rod is fixed to the connecting seat by mechanical crimping or welding to ensure stability during heat conduction.

[0048] In this embodiment, the material of the heat conductive rod includes but is not limited to the following: boron nitride, aluminum nitride, silicon carbide, aluminum oxide and artificial diamond or ceramic material, which can conduct the heat in the inner shielding layer to the heat dissipation unit, thereby improving the heat conduction efficiency inside the shielding layer structure and the busbar 23.

[0049] Optionally, the arc suppression module includes an inner shielding layer rubber sleeve, a busbar 23 rubber sleeve, an electric field uniformization component, an insulating protection component and an arc absorption component, the inner shielding layer rubber sleeve is provided with a storage cavity for placing the shielding layer mechanism connecting conductor 13, the busbar 23 rubber sleeve is provided with a connecting cavity for placing the busbar connecting conductor 18, the electric field uniformization component is arranged on the shielding layer mechanism connecting conductor 13 and the busbar connecting conductor 18, the insulating protection component is arranged on the surrounding side of the shielding layer mechanism connecting conductor 13 and the busbar connecting conductor 18, and isolates the shielding layer mechanism from the inner shielding layer rubber sleeve, and isolates the connecting conductor of the busbar 23 from the busbar 23 rubber sleeve, and the arc absorption component is on the surrounding side of the shielding layer mechanism connecting conductor 13 and the busbar connecting conductor 18 to extinguish the generated arc.

[0050] By cooperating with the adjustable wheelbase module and the arc suppression module, the connector can effectively suppress arc and partial discharge caused by poor contact while correcting the center distance error between the busbar 23 and the joint.

[0051] Optionally, the shielding layer mechanism and the busbar 23 are interference matched; Wherein, transfer terminals are provided at both ends of the busbar 23 .

[0052] like Figure 1 and Figure 5 As shown, the transfer terminal is connected to the shielding layer mechanism to form a conductive connection path, thereby achieving bridging and combination between different electrical cabinets and electrical cabinets.

[0053] In this embodiment, the shielding layer mechanism includes a three-way structure 15 and a four-way structure 14. Figure 5 As shown, the connection between different electrical cabinets / electrical cabinets is achieved through the organic combination of the busbar 23 and the three-way structure 15 or the four-way structure 14; Optionally, the electric field uniformity component includes an electric field adjustment cover and a conductive coating, the electric field adjustment cover is arranged on the contact end surface of the shielding layer structure connecting conductor and the busbar connecting conductor, and the conductive coating is coated on the contact end surface of the conductive part 11.

[0054] In this embodiment, the electric field adjustment cover includes multiple layers of conductive materials, the outer layer is a high-resistance conductive coating (such as a carbon-based coating), the middle layer is a low-resistance conductive material (such as copper or aluminum), and the inner layer is a uniform electrode for the contact end surface. At the same time, the cover body of the electric field adjustment cover adopts an arc or spherical design to avoid the tip effect. The outer layer can be connected to the conductive part 11 through multi-point contact to ensure a uniform electric field.

[0055] The outer layer of high-resistance material is used to weaken the interference of the external environment electric field and provide a shielding effect. The middle low-resistance layer ensures uniform distribution of the electric field and guides the current path through the equipotential surface. The inner contact surface is finely processed to reduce the contact resistance and ensure uniform distribution of the electric field.

[0056] In another embodiment, the inner surface of the electric field adjustment cover is arranged in a spiral shape, and the electric field is dispersed by controlling the length of the conductive path. The cover body of the electric field adjustment cover is made of a combination of conductive ceramics (such as silicon nitride ceramics) and high conductive alloys (such as copper-chromium alloys), where the ceramics ensure insulation and the conductive alloys ensure uniform distribution of the electric field.

[0057] Among them, the spiral structure reduces the concentration of local electric fields and prevents tip discharge by extending the conductive path. The combination of high conductivity and insulation of the composite material not only ensures the function of the electric field adjustment cover, but also improves the stability under high voltage environment. In addition, the main body of the electric field adjustment cover is made of insulating material, but conductive windows are designed on the contact end surface. Through the conductive areas exposed by these windows, direct conductive contact between the shielding layer structure connection conductor and the busbar connection conductor is achieved.

[0058] In other embodiments, the inner surface of the electric field regulating cover is designed with a honeycomb conductive grid, and the evenly distributed electrode points are connected to the contact end surface through the conductive coating. Gradient resistance design: The conductive coating in different areas is designed with a gradient resistance value, which gradually transitions from the center to the edge to ensure that the electric field is evenly distributed from the inside to the outside.

[0059] The honeycomb network structure makes the electric field evenly distributed on the contact end surface, eliminating the electric field concentration phenomenon. The gradient resistor design further optimizes the distribution of the electric field transition area and avoids the problem of excessive electric field at the edge.

[0060] Optionally, the insulating protection component includes an insulating coating and an insulating sheath 12, the insulating coating is coated on the contact end surface away from the shielding layer structure connecting conductor and the busbar connecting conductor to form an insulating part, and the insulating sheath 12 is nested on the outer periphery of the insulating part.

[0061] Optionally, the arc absorbing member includes an arc absorbing layer and an arc guiding groove 19 , the arc guiding groove 19 is provided on the inner wall surface of the storage cavity, and the arc absorbing layer is provided on the end surface of the arc extinguishing portion 10 .

[0062] In this embodiment, the arc absorption layer includes a temperature-resistant protective layer 9 (outer layer), a conductive energy-absorbing layer 21 (middle layer) and a heat-dissipating energy-absorbing substrate 20 (bottom layer). The temperature-resistant protective layer 9 is made of ceramic-based materials (such as alumina ceramics or boron nitride), which are resistant to high temperatures (up to 1500°C), and have the ability to resist the loss of arc impact, so as to resist the direct impact of the high temperature of the arc and prevent the surface of the material from being damaged. At the same time, in this embodiment, the outer layer is set as a micro-controlled ceramic structure, which allows partial heat and airflow to penetrate and reduce thermal stress concentration.

[0063] The conductive energy dissipation layer 21 uses a high-resistance conductive material (such as silicon carbide or graphene composite material) to absorb the arc energy, convert it into heat and diffuse it, and reduce the arc duration by limiting the arc path. A spiral or mesh conductive channel is embedded in the middle layer to guide the arc path to a complex geometric shape, thereby extending the arc path and increasing the dissipated energy. The conductive channel can be set as a discontinuous path to force the arc to jump between layers, further dissipating the arc energy.

[0064] The heat dissipation and energy absorption base 20 is made of high thermal conductivity insulating material (such as aluminum nitride ceramics or artificial diamond-based composite materials) to quickly conduct and diffuse the absorbed heat and protect the structural integrity of the absorption layer and other components of the arc extinguishing part 10. At the same time, the heat dissipation and energy absorption base 20 is designed as a corrugated surface or a honeycomb structure to increase the heat exchange area and improve the heat dissipation efficiency.

[0065] In addition, the arc absorption component also includes a self-healing absorption coating, which is coated on the surface of the arc absorption layer and automatically recovers damage after arc impact. The self-healing absorption coating adopts a nano-scale ceramic composite coating with self-healing ability. When an arc impact occurs, the microparticles in the coating fill the damaged area through thermal effect to restore the surface integrity of the absorption layer.

[0066] In this embodiment, the arc guide groove 19 is configured as a structure that gradually contracts from the entrance (such as a funnel-shaped channel), the entrance is relatively wide, and the channel is gradually compressed to the depth and finally closed to form an arc extinguishing area. The inner wall of the arc guide groove 19 is made of a high-temperature resistant material with low conductivity (such as silicon carbide ceramics) to ensure that the arc energy is completely dissipated in the groove.

[0067] The inner wall of the arc guide groove 19 is provided with precise fine spiral lines, the depth of which is usually in the range of 0.1-1 mm and the width is 0.2-1.5 mm. The curvature of the spiral path is designed to be a gradual curvature, that is, the spiral path is relatively gentle at the entrance and gradually transitions to a tighter spiral line towards the arc extinguishing area inside. A high resistance material layer (such as a high resistance ceramic coating) is coated on the inner wall of the arc guide groove 19 to further increase the arc dissipation efficiency.

[0068] A porous absorber (such as porous alumina ceramic) is set in the arc extinguishing area. Through its high specific surface area and excellent thermal conductivity, the residual heat of the arc is quickly dissipated to ensure that the arc is completely extinguished without an outlet. At the same time, the inner wall of the arc extinguishing area is covered with a high temperature resistant coating to further improve the ability to resist arc impact.

[0069] Optionally, the spacing adjustment unit includes a connecting rod, a power supply line, a pushing member, and a sliding track, wherein the sliding track is arranged in the connecting cavity, one end of the connecting rod is slidably connected to the sliding track, and the other end of the connecting rod is connected to the power supply line to form a power supply part; Figure 1 As shown, the power supply parts provided at both ends of the busbar 23 are connected together by wires, so that a conductive path is formed in the busbar.

[0070] In this embodiment, the wire is made of high-quality conductive metal material, specifically, copper wire, silver wire or gold wire.

[0071] Wherein, the sliding track and the pushing component are both made of ceramic material.

[0072] like Figure 1 and Figure 5 As shown, the power supply line is wound and placed in the connecting cavity so that the connecting rod can move flexibly during the pushing-out process.

[0073] The busbar 23 rubber cover is provided with a sliding groove, which is communicated with the storage cavity and the connecting cavity; The pushing member is arranged in the sliding groove and is engaged with the busbar connecting conductor 18 in a limited position; Fig.16 and Fig.17 As shown, the outer walls of the busbar connecting conductors 18 are respectively provided with clamping protrusions 6, and the clamping protrusions 6 are limitedly clamped with the pushing member; The pushing component includes a pushing rod 1, a pushing seat 3, and an anti-slip pattern 2 arranged on the pushing seat 3, one end of the pushing rod 1 is connected to the pushing seat 3, and the other end of the pushing rod 1 extends toward the shielding layer mechanism connecting conductor 13 and the busbar connecting conductor 18, and a clamping groove 5 is set at the end of the pushing rod 1, and the outer walls of the shielding layer mechanism connecting conductor 13 and the busbar connecting conductor 18 are respectively provided with clamping protrusions 6 that are limitedly clamped with the clamping groove 5.

[0074] The main body of the push rod 1 is in a semicircular arc shape, and the end surface of one side of the semicircular arc depression faces the side of the shielding layer mechanism connecting conductor and the busbar connecting conductor 18; The center of curvature of the semicircular arc coincides with the axis of the connecting conductor, so as to enhance the uniformity of the driving force.

[0075] Preferably, the semicircular arc of the push rod 1 wraps around 1 / 3 to 1 / 4 of the outer circumference of the shielding layer mechanism connecting conductor and the busbar connecting conductor 18. The arc design avoids excessive constraint while providing stable support to ensure the reliability of the limit clamping.

[0076] The pushing member further includes a protective soft cover 16, a moving track, and at least two sliding members, wherein the protective soft cover 16 is buckled on the sliding groove to isolate the sliding groove from the external environment. Specifically, at least two sliding members are symmetrically arranged on both side edges of the protective soft cover 16 and connected to the protective soft cover 16, and the moving track is arranged on the side of the sliding track away from the busbar connecting conductor, and at least two of the sliding members are slidably connected to the moving track.

[0077] A placement hole is set in the middle of the protective soft cover 16, and the placement hole is for the pushing seat 3 to pass through. The edge of the placement hole is connected to the outer wall of the pushing seat 3, and the first and second ends of the protective soft cover 16 are respectively connected to the first and second ends of the sliding groove.

[0078] In this embodiment, the spacing adjustment unit further includes a limiting component, which is disposed on the pushing path of the pushing rod 1 and limits the pushing path of the pushing rod 1 to enhance the overall anti-retraction effect.

[0079] The limiting member includes a spring 17, a limiting rod 4, and at least two limiting holes, which are evenly spaced along the length direction of the sliding groove. The two sides of the pushing seat 3 body are symmetrically provided with limiting cavities, one end of the limiting rod 4 is connected to one end of the spring 17 to form a pop-up portion, the other end of the spring 17 is connected to the bottom wall of the limiting cavity, the pop-up portion is arranged in the limiting cavity, and the other end of the limiting rod 4 extends toward a side away from the bottom wall of the limiting cavity; The end of the limiting rod 4 close to the at least two limiting holes is adapted to the at least two limiting holes.

[0080] At the same time, the height of the limiting rod 4 is flush with the height of at least two limiting holes 7; When the pushing seat 3 is sliding, the limiting rod 4 moves along with the movement of the pushing seat 3 and slides between at least two of the limiting holes 7. When the movement reaches the required position, the end of the limiting rod 4 is pushed and pressed against at least two of the limiting holes 7 by the elastic force of the spring 17, and is mutually restricted with the limiting holes 7, so that the pushing seat 3 is maintained at the current position.

[0081] Optionally, the locking and stopping unit includes a limiting card 22 and a limiting seat 24, the limiting card 22 is symmetrically arranged on the rubber sleeve of the busbar 23, the limiting seat 24 is arranged on the outer wall of the inner shielding layer rubber sleeve, and the limiting seat 24 body is provided with a clamping cavity; The limiting card 22 and the limiting seat 24 are detachably connected to each other.

[0082] The limit card body is elastic and protrudes toward one end close to the limit seat 24, and its end has a locking hook. When the limit card 22 is wedged into the limit cavity, it is clamped with the inner wall of the limit cavity, so that the busbar 23 can be detachably clamped on the shielding layer mechanism, so that the connection between the shielding layer mechanism connecting conductor and the busbar connecting conductor forms a conductive path, thereby realizing the connection and networking needs between different electrical cabinets / control cabinets.

[0083] Optionally, a conductive part 11 and an arc extinguishing part 10 are provided on the contact end surfaces of the shielding layer structure connecting conductor and the busbar connecting conductor, and the conductive part 11 and the arc extinguishing part 10 are arranged adjacent to each other and are arranged at equal intervals along the circumference of the contact end surfaces of the shielding layer structure connecting conductor and the busbar connecting conductor.

[0084] like Figure 1 and Figure 5 As shown, when the locking and stopping unit locks the connecting conductor of the busbar 23, the connecting conductor will not be offset, so that the connecting conductor of the shielding layer mechanism and the connecting conductor of the busbar 23 are in contact with each other, thereby achieving circuit conduction.

[0085] Through the overall coordination of the adjustable wheelbase module, arc suppression module and heat dissipation module, the connector can achieve the advantages of flexible installation, stable contact, reliable electrical performance, strong high-temperature safety and long service life in a variety of complex installation environments.

[0086] Through the overall coordination of the adjustable wheelbase module, arc suppression module and heat dissipation module, the connector can be quickly installed and adjusted under a variety of complex installation conditions, while improving its seismic and impact resistance, ensuring the mechanical stability, electrical safety and thermal stability of the connecting components during long-term use, and ultimately making the connector have the advantages of easy installation, efficient contact, long maintenance cycle, strong reliability and wide adaptability.

[0087] The contents disclosed above are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention specification and drawings are included in the protection scope of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. A busbar connector with adjustable center distance and top expansion, characterized in that: The adjustable center distance top expansion busbar connector comprises a shielding layer mechanism, a busbar, an adjustable wheelbase module, an arc suppression module and a heat dissipation module, wherein the adjustable wheelbase module is arranged at both ends of the busbar close to the shielding layer mechanism, and the arc suppression module and the heat dissipation module are arranged in the shielding layer mechanism and the busbar respectively; The adjustable wheelbase module adjusts the position of the busbar connecting conductor to adjust the contact distance between the shielding layer mechanism and the connecting conductor in the busbar, the heat dissipation module dissipates the heat in the shielding layer mechanism and the busbar to the outside, and the arc suppression module is arranged at the connection position between the shielding layer mechanism and the busbar; Among them, the adjustable wheelbase module includes a spacing adjustment unit and a locking and retreating unit. The spacing adjustment unit is respectively arranged on the busbar and linearly adjusts the position of the busbar connecting conductor. The locking and retreating unit is arranged on the busbar to detachably assemble the busbar on the shielding layer mechanism.

2. The adjustable center distance top expansion busbar connector according to claim 1, characterized in that: The heat dissipation module includes a heat dissipation unit and a conduction unit, wherein the conduction unit is arranged on the peripheral side of the shielding layer mechanism connecting conductor and transmits the heat generated by the shielding layer mechanism connecting conductor to the heat dissipation unit, and the heat dissipation unit dissipates the heat conducted by the conduction unit to the outside; Wherein, the heat dissipation unit is arranged on the outer wall of the shielding layer mechanism.

3. The adjustable center distance top expansion busbar connector according to claim 2, characterized in that: The arc suppression module includes an inner shielding layer rubber sleeve, a busbar rubber sleeve, an electric field uniformity component, an insulating protection component and an arc absorption component. The inner shielding layer rubber sleeve is provided with a storage cavity for placing the shielding layer mechanism connecting conductor. The busbar rubber sleeve is provided with a connecting cavity for placing the busbar connecting conductor. The electric field uniformity component is arranged on the shielding layer mechanism connecting conductor and the busbar connecting conductor. The insulating protection component is arranged on the surrounding side of the shielding layer mechanism connecting conductor and the busbar connecting conductor, and isolates the shielding layer mechanism from the inner shielding layer rubber sleeve, and isolates the busbar connecting conductor from the busbar rubber sleeve. The arc absorption component is on the surrounding side of the shielding layer mechanism connecting conductor and the busbar connecting conductor to eliminate the generated arc.

4. The adjustable center distance top expansion busbar connector according to claim 3, characterized in that: Interference matching between the shielding layer mechanism and the busbar; Wherein, transfer terminals are arranged at both ends of the busbar.

5. The adjustable center distance top expansion busbar connector according to claim 4, characterized in that: The spacing adjustment unit includes a connecting rod, a power supply line, a pushing member, and a sliding track, wherein the sliding track is arranged in the connecting cavity, one end of the connecting rod is slidably connected to the sliding track, and the other end of the connecting rod is connected to the power supply line to form a power supply part; Wherein, the sliding track and the pushing component are both made of ceramic material.

6. The adjustable center distance top expansion busbar connector according to claim 5, characterized in that: The locking and stopping unit comprises a limiting card and a limiting seat, wherein the limiting card is symmetrically arranged on the outer wall of the busbar rubber sleeve, the limiting seat is arranged on the outer wall of the busbar rubber sleeve and the limiting seat body is provided with a clamping cavity; Wherein, the limiting card and the limiting seat are detachably connected to each other.

7. The adjustable center distance top expansion busbar connector according to claim 6, characterized in that: A conducting portion and an arc extinguishing portion are provided on the contact end surfaces of the shielding layer structure connecting conductor and the busbar connecting conductor. The conducting portion and the arc extinguishing portion are arranged adjacent to each other and are arranged at equal intervals along the circumference of the contact end surfaces of the shielding layer structure connecting conductor and the busbar connecting conductor.

8. The adjustable center distance top expansion busbar connector according to claim 7, characterized in that: The electric field uniformity component comprises an electric field adjustment cover and a conductive coating, wherein the electric field adjustment cover is arranged on the contact end surface of the shielding layer structure connecting conductor and the busbar connecting conductor, and the conductive coating is coated on the contact end surface of the conductive part.

9. The adjustable center distance top expansion busbar connector according to claim 8, characterized in that: The insulating protection component includes an insulating coating and an insulating sheath. The insulating coating is coated on a contact end surface away from the shielding layer mechanism connecting conductor and the busbar connecting conductor to form an insulating portion, and the insulating sheath is nested around the insulating portion.

10. The adjustable center distance top expansion busbar connector according to claim 9, characterized in that: The arc absorbing member includes an arc absorbing layer and an arc guiding groove, the arc guiding groove is provided on the inner wall surface of the storage cavity, and the arc absorbing layer is provided on the end surface of the arc extinguishing portion.

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