Insulated tubular busbar devices and connection methods for railway power supply lines and their applications

Abstract

An insulated tubular busbar device and connection method for railway power supply lines, and its application, are disclosed. The device includes an insulated tubular busbar body for connecting to the railway power supply line. By using the insulated tubular busbar body as the conductive body and solid insulating ethylene propylene rubber as the insulating material, and by using specially made silicone rubber cold-shrink terminals, intermediate joints, and high current-carrying intermediate fittings, the device overcomes the impact of high-altitude areas with relatively thin air, large diurnal temperature differences, and high solar radiation intensity on railway power supply lines, thereby improving the safety performance of railway power supply lines.

Description

Technical Field

[0001] This invention relates to an insulated tubular busbar device and connection method and its application, particularly an insulated tubular busbar device and connection method for railway power supply lines and its application. Background Technology

[0002] Insulated tubular busbars are busbar products that use copper tubes as conductors and are externally insulated. Therefore, insulated tubular busbar devices, connection methods, and applications used in railway power supply lines are important power components. Among the existing insulated tubular busbar devices, connection methods, and applications used in railway power supply lines, there is no suitable insulated tubular busbar device, connection method, and application for railway power supply lines in high-altitude areas with relatively thin air, large diurnal temperature differences, and high solar radiation intensity. In particular, it is used to overcome the problems of poor heat dissipation, decreased insulation strength, rapid aging, easy condensation, and low insulation strength of electrical equipment in thin air when connecting gas-insulated switchgear.

[0003] Based on the applicant's technical disclosure and the existing technical problems, technical features and technical effects in the background art, the technical solution of this invention is proposed. Summary of the Invention

[0004] The subject of this invention is an insulated tubular busbar device for railway power supply lines.

[0005] The subject of this invention is a connection method for an insulated tubular busbar device used in railway power supply lines.

[0006] The subject of this invention is an application of an insulated tubular busbar device and connection method for railway power supply lines.

[0007] In order to overcome the above-mentioned technical shortcomings, the purpose of this invention is to provide an insulated tubular busbar device and connection method for railway power supply lines and its application, thereby improving the safety performance of railway power supply lines.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: an insulated tubular busbar device for railway power supply lines, comprising an insulated tubular busbar body for connecting with railway power supply lines.

[0009] By designing an insulated tubular busbar body, the system uses a metal tubular structure as the conductive body, overcoming the impact of high-altitude areas with relatively thin air, large temperature differences between day and night, and high solar radiation intensity on railway power supply lines, thus improving the safety performance of railway power supply lines.

[0010] This invention designs a technical feature of integrating an insulated tubular busbar body by using a metal tubular body as the conductive main body.

[0011] This invention designs an insulated tubular busbar body comprising a first insulated tubular busbar body and a second insulated tubular busbar body.

[0012] The present invention is designed to include a first accessory device, which is disposed on the insulated tubular busbar body and is configured as a cold shrink intermediate joint.

[0013] The present invention designs a cold shrink intermediate joint comprising a spring contact finger, a stainless steel inner liner core, a pin, a copper sleeve, a stainless steel sheath, a waterproof adhesive layer, an inner shielding tube, a joint insulation layer, a heat shrink tubing outer sheath, and a joint stress cone.

[0014] The present invention is designed such that the cold shrink intermediate joint also includes a watch strap contact finger.

[0015] The present invention designs a cold shrink intermediate joint comprising a creepage frame, a first electrode plate, a first insert, a second electrode plate, a second insert, a connecting screw, an adhesive liner, a protective sleeve, and an insulating liner.

[0016] The present invention is designed to include a second accessory device, which is disposed between the insulated tubular busbar body and the railway power supply line. The second accessory device is configured as a cold shrink terminal.

[0017] The present invention is designed to include a third accessory device, which is disposed between the insulated tubular busbar body and the gas-filled switchgear, and the second accessory device is configured as an inner cone plug-in head device.

[0018] The present invention designs a cold-shrink intermediate joint between the first section of the insulated tubular busbar body and the second section of the insulated tubular busbar body, and cold-shrink terminals are respectively provided on the first section of the insulated tubular busbar body and the second section of the insulated tubular busbar body.

[0019] The present invention designs an inner conical plug-in head device that is connected to the outer end of the first section of the insulated tubular busbar body.

[0020] This invention designs a first and second insulated tubular busbar body, each comprising a conductor, an inner shielding layer, an insulation layer, an outer shielding layer, a copper strip shielding layer, and a heat-shrinkable sheath. The outer surface layer of the conductor is connected to the inner shielding layer, the outer surface layer of the inner shielding layer is connected to the insulation layer, and the outer surface layer of the insulation layer is connected to the outer shielding layer. The outer surface layer of the outer shielding layer is connected to the copper strip shielding layer, and the outer surface layer of the copper strip shielding layer is connected to the heat-shrinkable sheath. The inner ends of the conductors of the first and second insulated tubular busbar bodies are respectively connected to cold-shrinkable intermediate joints, and the outer ends of the conductors of the first and second insulated tubular busbar bodies are respectively connected to cold-shrinkable terminals. The conductor is a copper tube, the inner shielding layer is a semi-conductive ethylene propylene rubber layer, the insulation layer is a high-temperature resistant ethylene propylene rubber layer, the outer shielding layer is a semi-conductive ethylene propylene rubber layer, the copper strip shielding layer is a double-layer overlapping copper strip layer, and the heat-shrinkable sheath is a flame-retardant and UV-resistant polyolefin sleeve.

[0021] This invention designs a system in which an inner ring flange is provided in the middle of the outer surface of a stainless steel inner liner core, and an outer ring flange is provided in the middle of the outer surface of a copper sleeve. The ends of the stainless steel inner liner core are respectively configured to be connected in a through-type manner to the first and second sections of the insulated tubular busbar body. Pins are respectively configured to be plugged into the stainless steel inner liner core, the first and second sections of the insulated tubular busbar body, and the copper sleeve is configured to be sleeved into the first and second sections of the insulated tubular busbar body. Spring contacts and waterproof adhesive layers are respectively provided between the copper sleeve and the first and second sections of the insulated tubular busbar body, and the stainless steel sheath is configured to be sleeved into the copper sleeve. The ends of the copper sleeve and the stainless steel sheath are respectively configured to be contacted into the first and second sections of the insulated tubular busbar body, and the inner shielding tube is configured to be sleeved into the stainless steel sheath, the first and second sections of the insulated tubular busbar body. The joint insulation layer is configured to be sleeved with the inner shielding tube, the first section of the insulated tubular busbar body, and the second section of the insulated tubular busbar body. The heat shrink tubing outer sheath is configured to be sleeved with the joint insulation layer, the first section of the insulated tubular busbar body, and the second section of the insulated tubular busbar body. Joint stress cones are respectively provided between the joint insulation layer and the first section of the insulated tubular busbar body, and between the joint insulation layer and the second section of the insulated tubular busbar body. The inner ring flange is arranged along the same circumference as the outer ring flange. The stainless steel inner lining core, copper sleeve, and stainless steel sheath are respectively set as cylindrical bodies, and the pin is set as a circular rod. The waterproof adhesive layer is set as silicone rubber sealant. The inner shielding tube is set as an imported liquid semi-conductive silicone rubber shielding component. The joint insulation layer is set as an imported liquid insulating silicone rubber columnar body. The heat shrink tubing outer sheath is set as a flame-retardant and UV-resistant polyolefin sleeve. The joint stress cone is set as an imported liquid semi-conductive silicone rubber cone that uniformly increases the field strength at the outer shielding port of the busbar. The inner ring flange and the outer ring flange are set as circular ring bodies.

[0022] This invention designs a cold-shrink terminal consisting of a silicone rubber insulating layer, a silicone rubber stress cone, a grounding wire, and a silicone rubber cap. The silicone rubber insulating layer is configured to be sleeved with either the first or second section of the insulated tubular busbar body. The silicone rubber stress cone and grounding wire are respectively located between the inner end of the silicone rubber insulating layer and the first or second section of the insulated tubular busbar body, and the silicone rubber cap is respectively located between the outer end of the silicone rubber insulating layer and the first or second section of the insulated tubular busbar body. The silicone rubber stress cone is configured as an inlet liquid semi-conductive silicone rubber flared cone with uniform electric field strength at the outer shield port of the busbar. The grounding wire is configured as a 70mm wire with a terminal block. 2The copper braided strap and the silicone rubber cap are designed as a waterproof, sealed convex cylindrical body.

[0023] This invention designs a silicone rubber insulating layer comprising a sleeve body and a skirt edge body, with the outer surface of the sleeve body connected to the skirt edge body. A stepped body is provided on the outer end side of the sleeve body, and an arc-shaped protrusion is provided on the inner end of the sleeve body. The sleeve body is respectively connected to the first and second sections of the insulated tubular busbar body, and the arc-shaped protrusion is respectively connected to the silicone rubber stress cone and the grounding wire. The stepped body is connected to the silicone rubber cap, and the skirt edge body is connected in a continuous manner to other components of the railway power supply line. The cylinder is set as a circular tubular body and the umbrella skirt edge body is set as an umbrella skirt shape. The stepped body is set as a threaded body and the outline of the arc-shaped protrusion is set as part of the circumference. There are eleven to seventeen umbrella skirt edge bodies, which are arranged at intervals along the transverse center line of the sleeve body. The length of the sleeve body is set as 1400-2400mm. The length between the outer end of the sleeve body and the outer end of the conductor of the first section of the insulated tubular busbar body, and the length between the outer end of the sleeve body and the outer end of the conductor of the second section of the insulated tubular busbar body are set as 400-700mm respectively.

[0024] This invention designs a first section of insulated tubular busbar body, a second section of insulated tubular busbar body, and cold-shrink intermediate joints and cold-shrink terminals arranged in an end-plugging manner, with one cold-shrink terminal connected to the first section of insulated tubular busbar body and the other cold-shrink terminal connected to the second section of insulated tubular busbar body. The conductors are respectively connected to the stainless steel inner core and the pin shaft. The inner shielding layer and the insulation layer are respectively connected to the copper sleeve, the stainless steel sheath, and the inner shielding tube. The copper strip shielding layer and the heat-shrink sheath are respectively connected to the joint insulation layer, the heat-shrink sleeve outer sheath, and the joint stress cone. The sleeve body, the silicone rubber stress cone part, and the grounding wire part are respectively connected to the heat-shrink sheath, and the silicone rubber cap part is connected to the conductor.

[0025] The present invention is designed to provide watch strap contacts and waterproof adhesive layers between the copper sleeve and the first section of the insulated tubular busbar body, and between the copper sleeve and the second section of the insulated tubular busbar body.

[0026] This invention designs an internal conical insertion / removal head device comprising a heat shrink tubing, a tail tube, a spring, a conical support, a sealing gasket, a sealing ring, a bolt, an insulating cone, an epoxy sleeve, a conductive sheet, a conductive post, and a positioning cylinder. The inner end of the epoxy sleeve is configured for contact connection with the gas-insulated switchgear. The bolt is configured for threaded connection between the inner end of the epoxy sleeve and the shell wall of the gas-insulated switchgear. A sealing ring is provided between the inner end of the epoxy sleeve and the shell wall of the gas-insulated switchgear. The conductive post is configured for sleeve connection with the outer end of the first section of the insulated tubular busbar body, and the positioning cylinder is configured for sleeve connection with the conductive post. The epoxy sleeve is configured for sleeve connection with the positioning cylinder, and a conductive sheet is provided between the conductive post and the positioning cylinder. An insulating cone is provided between the epoxy sleeve and the first section of the insulated tubular busbar body, and a conical support is provided between the insulating cone and the shell wall of the gas-insulated switchgear. The tail tube is configured for sleeve connection with the conical support, and a spring is provided between the tail tube and the conical support. A sealing ring is provided between the inner end of the tail tube and the shell wall of the gas-insulated switchgear. A sealing gasket is provided, and a heat shrink tubing is installed between the tail tube and the first section of the insulated tubular busbar body. The heat shrink tubing is set to be connected to the tail tube and the first section of the insulated tubular busbar body in a sleeve-type connection. The heat shrink tubing and the tail tube are both set to be conical cylindrical bodies. The spring is set to be a column spring. The cone support is set to be a U-shaped cylindrical body. The outer end of the middle ring of the cone support is set to be connected to one end of the spring. The other end of the spring is set to be connected to the inner wall of the tail tube. The sealing gasket and the sealing ring are both set to be circular annular bodies. The bolts are set to be hexagonal nuts. The bolts are set to be spaced apart along the periphery of the epoxy sleeve. The insulating cone is set to be a convex cylindrical body. The epoxy sleeve is set to be conical cylindrical body. The conductive sheet is set to be a "【" shaped plate. The conductive sheet is set to be spaced apart along the periphery of the conductive post. The conductive post is set to be cylindrical. The positioning cylinder is set to be a U-shaped seat and is set to be connected to the gas filling cabinet. The conductive post is set to be connected to the components in the gas filling cabinet.

[0027] This invention designs a system in which a first insert and a second insert are respectively provided on a creepage frame. Connecting screws are respectively provided between the first insert and the creepage frame, and between the second insert and the creepage frame. A first electrode plate is provided between the first insert and the creepage frame, and a second electrode plate is provided between the second insert and the creepage frame. Adhesive linings are respectively provided between the first insert and the first section of the insulated tubular busbar body, and between the second insert and the second section of the insulated tubular busbar body. A protective sleeve is provided between the first section of the insulated tubular busbar body, the second section of the insulated tubular busbar body, and the creepage frame, and an insulating lining is provided in the protective sleeve.

[0028] This invention designs a climbing frame comprising a first disc portion, a first plate portion, a second disc portion, a second plate portion, a column portion, and protruding rib portions. Protruding rib portions are respectively provided on the outer end faces of the first plate portion and the second plate portion. The inner end faces of the first and second plate portions are respectively configured to connect to the ends of the column portions. The inner side face of the first disc portion is configured to connect to the outer end face of the first plate portion, and the inner side face of the second disc portion is configured to connect to the outer end face of the second plate portion. The outer side faces of the first and second disc portions are respectively configured to connect to connecting screws. Through holes are respectively provided in the first and second disc portions, and the protruding rib portions are respectively configured to connect to the first electrode plate and... The second electrode plate is connected, the outer end face of the first plate is configured to connect with the first electrode plate and the outer end face of the second plate is configured to connect with the second electrode plate, the first disc is configured to connect with the first insertion tube and the second disc is configured to connect with the second insertion tube, the first disc and the second disc are respectively configured as circular rods and the first plate and the second plate are respectively configured as L-shaped plates, the column is configured as a circular rod and the convex strip is configured as a rectangular strip, the column and the convex strip are respectively configured to be arranged at intervals along the transverse center line of the first plate and the through hole is configured as a circular hole, the first disc, the first plate, the second disc, the second plate and the column are respectively configured to be embedded and connected to the insulating liner.

[0029] This invention designs a first electrode plate and a second electrode plate, each comprising a horizontal portion and an inclined portion, with a transparent window body provided on the horizontal portion. The inner end of the horizontal portion is connected to one end of the inclined portion, the other end of the inclined portion of the first electrode plate is connected to a first insertion tube, and the other end of the inclined portion of the second electrode plate is connected to a second insertion tube. The inner surface of the horizontal portion and the inner surface of the inclined portion are respectively connected to the climbing frame in contact, and the outer end of the horizontal portion is connected to the climbing frame in a hook-on manner. The transparent window body is connected to the climbing frame, and the outer surface of the horizontal portion and the outer surface of the inclined portion are respectively connected to a protective sleeve. The horizontal portion is an L-shaped sheet, and the inclined portion is a rectangular strip. The transparent window body is a rectangular hole, and the transparent window bodies are arranged at intervals along the horizontal center line of the horizontal portion.

[0030] This invention designs a system in which intermittent holes are provided on the side surfaces of the first and second insert tubes, and mounting holes are provided at the bottom end of the tubes for connection with connecting screws. The open portion of the tubes is connected to a creepage frame, and the tubes and intermittent holes are connected to an adhesive liner. The open sidewall of the first insert tube is connected to a first electrode plate, and the open sidewall of the second insert tube is connected to a second electrode plate. The tubes of the first insert tube are connected to a first section of insulated tubular busbar body, and the tubes of the second insert tube are connected to a second section of insulated tubular busbar body. The tubes are circular blind tubes, and the mounting holes are circular holes. The intermittent holes are rectangular holes and are arranged at intervals along the circumference of the tubes and at intervals along the transverse centerline of the tubes.

[0031] The present invention is designed such that the connecting screw is configured as a hexagonal nut and is configured to be connected in series with the first insertion tube and the second insertion tube respectively, the inner end of the connecting screw is configured to be threadedly connected with the climbing frame, and the connecting screw is configured to be embeddedly connected with the adhesive liner.

[0032] The present invention designs an adhesive liner having a coagulated layer comprising, by weight: 60-70% conductive silicone, 9-14% epoxy resin, 5-7% quartz sand, 10-15% silica fume and 4-6% hydroxymethyl cellulose, and the adhesive liner being configured to be enclosedly connected to a first insertion tube, a second insertion tube and a connecting screw.

[0033] The present invention is designed such that the protective sleeve is configured as an outer sheath of a heat shrink tubing, and one end of the protective sleeve is configured to be connected to the first section of the insulated tubular busbar body, and the other end of the protective sleeve is configured to be connected to the second section of the insulated tubular busbar body. The protective sleeve is configured to be enclosedly connected to the first electrode plate, the second electrode plate and the insulating liner.

[0034] The present invention designs an insulating liner as a solidified layer comprising, by weight: 60-70% quartz sand, 20-30% polyurethane and 10-18% ordinary silicate cement, and the insulating liner is configured to be embeddedly connected to a protective sleeve, and the insulating liner is configured to be enclosedly connected to the creepage frame, the first electrode plate and the second electrode plate.

[0035] The present invention is designed such that the tube is connected to the inclined part, the horizontal part and the inclined part are respectively connected to the first electrode plate and the second electrode plate, and the transparent window body is connected to the protruding part.

[0036] The present invention is designed such that the first section of insulated tubular busbar body, the second section of insulated tubular busbar body, the cold shrink intermediate joint and the cold shrink terminal and the inner cone plug-in head device are arranged in a way that the ends are fixedly connected, the conductive post is arranged to be connected to the conductor of the first section of insulated tubular busbar body, and the heat shrink tubing and the insulating cone are respectively arranged to be connected to the heat shrink sheath of the first section of insulated tubular busbar body.

[0037] This invention designs a connection method for an insulated tubular busbar device for railway power supply lines, the steps of which are: using the metal tubular body in the insulated tubular busbar body as a conductive component for connection with the railway power supply line.

[0038] The present invention comprises the following steps: stripping the ends of the first and second insulated tubular busbar bodies, exposing the conductors at the ends of both sections, such that the exposed lengths of the conductors at the outer ends of the first and second insulated tubular busbar bodies are 400-700 mm respectively.

[0039] The conductors at the inner ends of the first and second insulated tubular busbar sections are respectively inserted into the stainless steel inner liner core. The outer end faces of the conductors at the inner ends of both sections are then in contact with the inner ring flange. Pins are then inserted into the pin holes between the stainless steel inner liner core and the conductors, with the pins spaced apart along the periphery of both sections. Next, install four sets of spring contacts on the outer surface of the conductor. Apply a waterproof adhesive layer to the outer surface of the conductor at the inner end of the first insulated tubular busbar body and the outer surface of the conductor at the inner end of the second insulated tubular busbar body. Install the copper sleeve on the outer surface of the conductor at the inner end of the first insulated tubular busbar body and the outer surface of the conductor at the inner end of the second insulated tubular busbar body. Install two stainless steel sheaths on the outer end face of the outer ring flange body respectively. Install the inner shielding tube between the stainless steel sheath, the insulation layer of the first insulated tubular busbar body, and the insulation layer of the second insulated tubular busbar body. In this process, the joint insulation layer is installed between the inner shielding tube, the copper strip shielding layer of the first insulated tubular busbar body, and the copper strip shielding layer of the second insulated tubular busbar body. The outer sheath of the heat-shrink tubing is installed between the joint insulation layer, the heat-shrink sheath of the first insulated tubular busbar body, and the heat-shrink sheath of the second insulated tubular busbar body. The joint stress cone is then inserted between the joint insulation layer and the copper strip shielding layer of the first insulated tubular busbar body, and between the joint insulation layer and the copper strip shielding layer of the second insulated tubular busbar body, respectively, completing the butt joint connection between the first and second insulated tubular busbar bodies.

[0040] Sleeves are fitted onto the heat-shrinkable sheaths at the outer ends of the first and second insulated tubular busbar bodies, respectively. Silicone rubber stress cones and grounding wires are inserted between the arc-shaped protrusion and the heat-shrinkable sheath of the first and second insulated tubular busbar bodies, respectively. Silicone rubber caps are fitted onto the conductors at the outer ends of the first and second insulated tubular busbar bodies, respectively. The inner port of the silicone rubber cap connects to the stepped body, and the outer port of the silicone rubber cap connects to the conductors at the outer ends of the first and second insulated tubular busbar bodies, respectively.

[0041] Insert the sleeve body into other components of the railway power supply line, so that the edge of the umbrella skirt is connected to the other components of the railway power supply line, thereby connecting the conductors at the outer ends of the first section of the insulated tubular busbar body and the conductors at the outer ends of the second section of the insulated tubular busbar body to the railway power supply line respectively.

[0042] The present invention comprises the following steps: 1) Installing an epoxy sleeve onto the shell wall of the gas-filled switchgear using bolts; 2) Inserting a positioning cylinder into the epoxy sleeve; 3) Fitting a heat-shrinkable tube, tail tube, spring, cone support, and insulating cone onto the heat-shrinkable sheath of the first section of the insulated tubular busbar body; 4) Connecting the conductor at the end of the first section of the insulated tubular busbar body to a conductive post; 5) Inserting the conductive post into the positioning cylinder; 6) Installing a conductive sheet between the conductive post and the positioning cylinder; 7) Installing a cone support between the insulating cone and the shell wall of the gas-filled switchgear; 8) Installing a spring between the tail tube and the cone support; 9) Installing the tail tube between the cone support and the heat-shrinkable tube; 10) Connecting the conductive post to components within the gas-filled switchgear, thereby connecting the conductor at the outer end of the first section of the insulated tubular busbar body to the gas-filled switchgear.

[0043] The present invention is designed, and its steps are as follows:

[0044] The horizontal and inclined portions of the first electrode plate are mounted on the first plate. The transparent window of the first electrode plate is mounted on the protruding part of the first plate. The first disc is inserted into the first tube. The first connecting screw is threaded through the mounting hole of the first tube, connecting the first connecting screw to the first disc, thus completing the installation between the first tube and the climbing frame.

[0045] Install the horizontal and inclined portions of the second electrode plate onto the second plate. Install the transparent window of the second electrode plate onto the protruding part of the second plate. Insert the second disc into the second insertion tube. Pass the second connecting screw through the mounting hole of the second insertion tube, so that the second connecting screw is threadedly connected to the second disc, thus completing the installation between the second insertion tube and the climbing frame.

[0046] Place the protective sleeve over the horizontal and sloping sections, and fold the ends of the protective sleeve inwards.

[0047] The tube portion of the first insert is inserted into the conductor of the first insulated tubular busbar body, and the tube portion of the second insert is inserted into the conductor of the second insulated tubular busbar body. A bonding liner material is prepared by mixing 60-70% conductive silicone, 9-14% epoxy resin, 5-7% quartz sand, 10-15% silica fume, and 4-6% hydroxymethyl cellulose according to the weight ratio. This bonding liner material is then injected under high pressure through a through-hole between the tube portion of the first insert and the first disc portion, overflowing outwards through the intermittent holes of the first insert, connecting the tube portion of the first insert to the conductor of the first insulated tubular busbar body. Similarly, the bonding liner material is injected under high pressure through a through-hole between the tube portion of the second insert and the second disc portion, overflowing outwards through the intermittent holes of the second insert, connecting the tube portion of the second insert to the conductor of the second insulated tubular busbar body.

[0048] According to the following weight ratio: 60-70% quartz sand, 20-30% polyurethane and 10-18% ordinary silicate cement are mixed to prepare the insulating liner material. The insulating liner material is poured into the protective sleeve and poured between the creepage frame, the first electrode plate and the second electrode plate. One of the ports of the protective sleeve is turned outward so that one port of the protective sleeve is connected to the first section of the insulated tubular busbar body. The other port of the protective sleeve is turned outward so that the other port of the protective sleeve is connected to the second section of the insulated tubular busbar body.

[0049] This invention designs an insulated tubular busbar device and connection method for railway power supply lines, and its application in 27.5kV power supply lines.

[0050] In this technical solution, the first section of the insulated tubular busbar body and the second section of the insulated tubular busbar body are basic components and essential technical features of the invention. The cold-shrink intermediate joint, cold-shrink terminal, and inner cone plug-in device are functional components, features that achieve other technical effects of the invention. The components include: conductor, inner shielding layer, insulation layer, outer shielding layer, copper tape shielding layer, heat-shrink sheath, spring contact finger, watch strap contact finger, stainless steel inner lining core, pin, copper sleeve, stainless steel sheath, waterproof adhesive layer, inner shielding tube, joint insulation layer, heat-shrink tubing outer sheath, joint stress cone, inner ring flange, outer ring flange, silicone rubber insulation layer, and silicone rubber stress cone. The design of the following technical features—grounding wire section, silicone rubber cap section, sleeve body, umbrella skirt edge body, step body, arc-shaped protrusion body, heat shrink tubing, tail tube, spring, cone support, sealing gasket, sealing ring, bolt, insulating cone, epoxy sleeve, conductive sheet, conductive post, positioning cylinder, climbing frame, first electrode sheet, first insertion tube, second electrode sheet, second insertion tube, connecting screw, adhesive liner, protective sleeve, insulating liner, first disc section, first plate section, second disc section, second plate section, column section and protruding strip section, through hole body horizontal and vertical section, inclined section, transparent window body, pipe section, intermittent hole body and mounting hole body—are technical features that comply with the Patent Law and its implementing regulations.

[0051] In this technical solution, the insulating tubular busbar body, which serves as the conductive main body, is an important technical feature. It possesses novelty, inventiveness, and practicality in the technical field of insulating tubular busbar devices and connection methods for railway power supply lines and their applications. The terminology in this technical solution can be explained and understood using patent literature in this technical field. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of one of the first embodiments of the present invention.

[0054] Figure 2 This is a schematic diagram of the structure of the cold shrink intermediate joint 3 in one of the first embodiments of the present invention.

[0055] Figure 3 This is a schematic diagram of the spring contact finger 301.

[0056] Figure 4 This is a schematic diagram of the structure of the cold shrink terminal 4.

[0057] Figure 5 This is a schematic diagram of the cold shrink intermediate joint 3 in the second embodiment of the present invention.

[0058] Figure 6 This is a schematic diagram of the structure of the watch strap contact finger 302.

[0059] Figure 7 for Figure 5 The right view,

[0060] Figure 8 This is a schematic diagram of the third embodiment of the present invention.

[0061] Figure 9 This is a schematic diagram of the internal cone insertion / removal head device 5.

[0062] Figure 10 This is a schematic diagram of the cold shrink intermediate joint 3 in the fourth embodiment of the present invention.

[0063] Figure 11 This diagram shows the connection relationship between the climbing frame 90, the first electrode plate 91, the second electrode plate 93, and the protective sleeve 97.

[0064] First section of insulated tubular busbar body -1, Second section of insulated tubular busbar body -2, Cold shrink intermediate joint -3, Cold shrink terminal -4, Inner conical plug-in device -5, Conductor -11, Inner shielding layer -12, Insulation layer -13, Outer shielding layer -14, Copper tape shielding layer -15, Heat shrink sheath -16, Spring contact finger -301, Watch strap contact finger -302, Stainless steel inner lining core -31, Pin shaft -32, Copper sleeve -33, Stainless steel sheath -34, Waterproof adhesive layer -35, Inner shielding tube -36, Joint insulation layer -37, Heat shrink tubing outer sheath -38, Joint Stress cone-39, inner ring flange-311, outer ring flange-331, silicone rubber insulating layer-41, silicone rubber stress cone-42, grounding wire-43, silicone rubber cap-44, sleeve-411, umbrella skirt edge-412, step-shaped body-413, arc-shaped protrusion-414, heat shrink tubing-51, tail tube-52, spring-53, cone support-54, sealing gasket-55, sealing ring-56, bolt-57, insulating cone-58, epoxy sleeve-59, conductive sheet-591, conductive post-592, positioning cylinder-593.

[0065] Climbing frame-90, First electrode plate-91, First insertion tube-92, Second electrode plate-93, Second insertion tube-94, Connecting screw-95, Adhesive liner-96, Protective sleeve-97, Insulating liner-98, First disc section-901, First plate section-902, Second disc section-903, Second plate section-904, Column section-905, Raised strip section-906, Through hole body-907, Horizontal and vertical section-81, Inclined section-82, Transparent window body-83, Tube section-71, Intermittent hole body-72, Mounting hole body-73. Detailed Implementation

[0066] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood to mean without dispensing the presence or addition of one or more other elements or combinations thereof.

[0067] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. If the processing conditions are not explicitly stated, please refer to the product manual or follow the conventional methods in the field.

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] An insulated tubular busbar device for railway power supply lines. Figure 1 As one of the first embodiments of the present invention, this embodiment is described in detail with reference to the accompanying drawings. It includes a first section of insulated tubular busbar body 1, a second section of insulated tubular busbar body 2, a cold shrink intermediate joint 3, and a cold shrink terminal 4. A cold shrink intermediate joint 3 is provided between the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2, and cold shrink terminals 4 are respectively provided on the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2.

[0072] In this embodiment, the first insulated tubular busbar body 1 and the second insulated tubular busbar body 2 are respectively configured to include a conductor 11, an inner shielding layer 12, an insulation layer 13, an outer shielding layer 14, a copper strip shielding layer 15, and a heat-shrinkable sheath 16. The outer surface layer of the conductor 11 is connected to the inner shielding layer 12, the outer surface layer of the inner shielding layer 12 is connected to the insulation layer 13, the outer surface layer of the insulation layer 13 is connected to the outer shielding layer 14, the outer surface layer of the outer shielding layer 14 is connected to the copper strip shielding layer 15, and the outer surface layer of the copper strip shielding layer 15 is connected to the heat-shrinkable sheath 16. The inner end of conductor 11 of the line body 1 and the inner end of conductor 11 of the second section of insulated tubular busbar body 2 are respectively connected to the cold shrink intermediate joint 3, and the outer end of conductor 11 of the first section of insulated tubular busbar body 1 and the outer end of conductor 11 of the second section of insulated tubular busbar body 2 are respectively connected to the cold shrink terminal 4. The conductor 11 is a copper tube, the inner shielding layer 12 is a semi-conductive ethylene propylene rubber layer, the insulation layer 13 is a high-temperature resistant ethylene propylene rubber layer, the outer shielding layer 14 is a semi-conductive ethylene propylene rubber layer, the copper strip shielding layer 15 is a double-layer overlapping copper strip layer, and the heat shrink sheath 16 is a flame-retardant and UV-resistant polyolefin sheath.

[0073] The first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2 form a support connection point for the cold shrink intermediate joint 3 and the cold shrink terminal 4. The conductor 11 is used to connect with the cold shrink intermediate joint 3 and the cold shrink terminal 4. The conductor 11 is protected by the inner shielding layer 12, the insulation layer 13, the outer shielding layer 14, the copper tape shielding layer 15, and the heat shrink sheath 16. Its technical purpose is to serve as the main component of the insulated tubular busbar device for railway power supply lines.

[0074] In this embodiment, the cold-shrink intermediate joint 3 is configured to include a spring contact finger 301, a stainless steel inner liner core 31, a pin 32, a copper sleeve 33, a stainless steel sheath 34, a waterproof adhesive layer 35, an inner shielding tube 36, a joint insulation layer 37, a heat-shrink tubing outer sheath 38, and a joint stress cone 39. An inner ring flange 311 is provided at the middle of the outer surface of the stainless steel inner liner core 31, and an outer ring flange 331 is provided at the middle of the outer surface of the copper sleeve 33. The ends of the stainless steel inner liner core 31 are respectively configured to be connected in series with the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2. The pin 32 is respectively configured to be connected to the stainless steel inner liner core 31. The first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2 are plug-in connected, and the copper sleeve 33 is configured to be sleeve-connected to the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2. A spring contact finger 301 and a waterproof adhesive layer 35 are respectively provided between the copper sleeve 33 and the first section of insulated tubular busbar body 1, and between the copper sleeve 33 and the second section of insulated tubular busbar body 2. A stainless steel sheath 34 is configured to be sleeve-connected to the copper sleeve 33. The ends of the copper sleeve 33 and the stainless steel sheath 34 are respectively configured to be contact-connected to the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2, and are internally shielded. The tube 36 is configured to be sleeved with the stainless steel sheath 34, the first section of insulated tubular busbar body 1, and the second section of insulated tubular busbar body 2. The joint insulation layer 37 is configured to be sleeved with the inner shielding tube 36, the first section of insulated tubular busbar body 1, and the second section of insulated tubular busbar body 2. The heat shrink tubing outer sheath 38 is configured to be sleeved with the joint insulation layer 37, the first section of insulated tubular busbar body 1, and the second section of insulated tubular busbar body 2. Joint stress cones 39 and inner ring flanges 31 are respectively provided between the joint insulation layer 37 and the first section of insulated tubular busbar body 1, and between the joint insulation layer 37 and the second section of insulated tubular busbar body 2. 1 is arranged along the same circumference as the outer ring flange 331. The stainless steel inner lining core 31, copper sleeve 33 and stainless steel sheath 34 are respectively set as cylindrical bodies and the pin shaft 32 is set as a circular rod body. The waterproof adhesive layer 35 is set as silicone rubber sealant. The inner shielding tube 36 is set as an imported liquid semi-conductive silicone rubber shielding component. The joint insulation layer 37 is set as an imported liquid insulating silicone rubber column. The heat shrink tubing outer sheath 38 is set as a flame-retardant and UV-resistant polyolefin tubing. The joint stress cone 39 is set as an imported liquid semi-conductive silicone rubber cone with uniform electric field strength at the port of the busbar outer shield. The inner ring flange 311 and the outer ring flange 331 are set as circular ring bodies.

[0075] The cold-shrink intermediate joint 3 forms a support connection point for the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2. It consists of a spring contact finger 301, a stainless steel inner lining core 31, a pin shaft 32, a copper sleeve 33, a stainless steel sheath 34, a waterproof adhesive layer 35, an inner shielding tube 36, a joint insulation layer 37, and a heat-shrink tubing outer sheath 38. It realizes the connection with the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2. The joint stress cone 39 realizes the reinforcement treatment of the joint insulation layer 37 with the first section of insulated tubular busbar body 1 or the second section of insulated tubular busbar body 2. Its technical purpose is to serve as a component for docking the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2.

[0076] In this embodiment, the cold-shrink terminal 4 is configured as a silicone rubber insulating layer 41, a silicone rubber stress cone 42, a grounding wire 43, and a silicone rubber cap 44. The silicone rubber insulating layer 41 is configured to be connected to either the first section of the insulated tubular busbar body 1 or the second section of the insulated tubular busbar body 2 via a sleeve connection. The silicone rubber stress cone 42 and the grounding wire 43 are respectively located between the inner end of the silicone rubber insulating layer 41 and the first section of the insulated tubular busbar body 1 or between the inner end of the silicone rubber insulating layer 41 and the second section of the insulated tubular busbar body 2. The silicone rubber cap 44 is respectively located between the outer end of the silicone rubber insulating layer 41 and the first section of the insulated tubular busbar body 1 or between the outer end of the silicone rubber insulating layer 41 and the second section of the insulated tubular busbar body 2. The silicone rubber stress cone 42 is configured as an inlet liquid semi-conductive silicone rubber horn cone with uniform electric field strength at the outer shield port of the busbar. The grounding wire 43 is configured as a 70mm wire with a terminal block. 2 The copper braided strap and the silicone rubber cap 44 are configured as a waterproof, sealed convex cylindrical body.

[0077] The cold-shrink terminal 4 forms a support connection point for the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2. The silicone rubber insulation layer 41 and the silicone rubber cap 44 realize the connection with the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2. The silicone rubber stress cone 42 realizes the reinforcement treatment between the silicone rubber insulation layer 41 and the first section of insulated tubular busbar body 1 or the second section of insulated tubular busbar body 2. The grounding wire 43 realizes the connection treatment between the silicone rubber insulation layer 41 and the ground. Its technical purpose is to be used as an external component of the insulated tubular busbar device for railway power supply lines.

[0078] In this embodiment, the silicone rubber insulating layer 41 is configured to include a sleeve body 411 and a skirt edge body 412, with the outer surface of the sleeve body 411 connected to the skirt edge body 412. A step body 413 is provided on the outer end side of the sleeve body 411, and an arc-shaped protrusion 414 is provided on the inner end of the sleeve body 411. The sleeve body 411 is respectively connected to the first section of the insulating tubular busbar body 1 and the second section of the insulating tubular busbar body 2, and the arc-shaped protrusion 414 is respectively connected to the silicone rubber stress cone portion 42 and the grounding wire portion 43. The step body 413 is connected to the silicone rubber cap portion 44, and the skirt edge body 412 is configured to penetrate other components of the railway power supply line. The sleeve body 411 is configured as a circular tubular body and the umbrella skirt edge body 412 is configured as an umbrella skirt shape. The step body 413 is configured as a threaded body and the outline of the arc-shaped protrusion 414 is configured as part of a circumference. There are eleven to seventeen umbrella skirt edge bodies 412, which are arranged at intervals along the transverse center line of the sleeve body 411. The length of the sleeve body 411 is configured as 1400-2400mm. The length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the first section of the insulated tubular busbar body 1, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the second section of the insulated tubular busbar body 2 are respectively configured as 400-700mm.

[0079] The sleeve body 411 enables connection with the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2. The stepped body 41 enables connection with the silicone rubber cap part 44. The arc-shaped protrusion body 414 enables connection with the silicone rubber stress cone part 42 and the grounding wire part 43. The umbrella skirt edge body 412 enables connection with other components of the railway power supply line. Its technical purpose is to serve as a component for docking with other components of the railway power supply line.

[0080] In this embodiment, the first section of insulated tubular busbar body 1, the second section of insulated tubular busbar body 2, and the cold shrink intermediate joint 3 and cold shrink terminal 4 are arranged in a terminal plugging manner, with one cold shrink terminal 4 connected to the first section of insulated tubular busbar body 1 and the other cold shrink terminal 4 connected to the second section of insulated tubular busbar body 2. The conductor 11 is connected to the stainless steel inner core 31 and the pin 32 respectively. The inner shielding layer 12 and the insulation layer 13 are connected to the copper sleeve 33, the stainless steel sheath 34 and the inner shielding tube 36 respectively. The copper strip shielding layer 15 and the heat shrink sheath 16 are connected to the joint insulation layer 37, the heat shrink sleeve outer sheath 38 and the joint stress cone 39 respectively. The sleeve body 411, the silicone rubber stress cone part 42 and the grounding wire part 43 are connected to the heat shrink sheath 16 respectively. The silicone rubber cap part 44 is connected to the conductor 11.

[0081] In one of the supporting examples of the first embodiment of the present invention, eleven umbrella skirt edge bodies 412 are provided and are arranged at intervals along the transverse center line of the sleeve body 411. The length of the sleeve body 411 is 1400mm, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the first section of the insulated tubular busbar body 1, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the second section of the insulated tubular busbar body 2 are respectively set to 400mm.

[0082] In a supporting example of one of the first embodiments of the present invention, the umbrella skirt edge body 412 is configured to be seventeen in number and arranged at intervals along the transverse center line of the sleeve body 411. The length of the sleeve body 411 is set to 2400mm, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the first section of the insulated tubular busbar body 1, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the second section of the insulated tubular busbar body 2 are each set to 700mm.

[0083] In a third supporting embodiment of the first embodiment of the present invention, fourteen umbrella skirt edge bodies 412 are provided and are arranged at intervals along the transverse center line of the sleeve body 411. The length of the sleeve body 411 is 1900mm, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the first section of the insulated tubular busbar body 1, and the length between the outer end of the sleeve body 411 and the outer end of the conductor 11 of the second section of the insulated tubular busbar body 2 are respectively set to 550mm.

[0084] The present invention will be further described below with reference to embodiments. These embodiments are intended to illustrate the present invention and not to further limit the present invention.

[0085] A connection method for an insulated tubular busbar device for railway power supply lines, in one of the first embodiments of the present invention, comprises the following steps: stripping the ends of the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2, so that the conductors 11 at the ends of the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2 are exposed, and the exposed lengths of the conductors 11 at the outer ends of the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2 are 400-700 mm respectively.

[0086] The conductors 11 at the inner ends of the first insulated tubular busbar body 1 and the second insulated tubular busbar body 2 are respectively inserted into the stainless steel inner liner core 31, so that the outer end faces of the conductors 11 at the inner ends of the first insulated tubular busbar body 1 and the second insulated tubular busbar body 2 respectively contact the inner ring flange 311. Pins 32 are respectively inserted into the pin holes between the stainless steel inner liner core 31 and the conductors 11, so that the pins 32 are arranged at intervals along the periphery of the conductors 11 at the inner ends of the first insulated tubular busbar body 1 and the second insulated tubular busbar body 2. Next, install four sets of spring contacts 301 on the outer surface of conductor 11. Apply waterproof adhesive layer 35 to the outer surface of conductor 11 at the inner end of the first insulated tubular busbar body 1 and the outer surface of conductor 11 at the inner end of the second insulated tubular busbar body 2. Install copper sleeves 33 on the outer surface of conductor 11 at the inner end of the first insulated tubular busbar body 1 and the outer surface of conductor 11 at the inner end of the second insulated tubular busbar body 2. Install two stainless steel sheaths 34 on the outer end face of the outer ring flange 331 respectively. Install the inner shielding tube 36 on the stainless steel sheath 34, the insulation layer 13 of the first insulated tubular busbar body 1, and the insulation layer 13 of the second insulated tubular busbar body 2. Between the inner shielding tube 36, the copper strip shielding layer 15 of the first section of the insulated tubular busbar body 1, and the copper strip shielding layer 15 of the second section of the insulated tubular busbar body 2, the joint insulation layer 37 is installed between the inner shielding tube 36, the copper strip shielding layer 15 of the first section of the insulated tubular busbar body 1, and the copper strip shielding layer 15 of the second section of the insulated tubular busbar body 2. The joint stress cone 39 is inserted between the joint insulation layer 37 and the copper strip shielding layer 15 of the first section of the insulated tubular busbar body 1, and between the joint insulation layer 37 and the copper strip shielding layer 15 of the second section of the insulated tubular busbar body 2, respectively, to complete the butt connection of the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2.

[0087] Sleeves 411 are fitted onto the heat-shrinkable sheaths 16 at the outer ends of the first insulated tubular busbar body 1 and the second insulated tubular busbar body 2, respectively. Silicone rubber stress cones 42 and grounding wires 43 are inserted between the arc-shaped protrusions 414 and the heat-shrinkable sheaths 16 of the first insulated tubular busbar body 1, and between the arc-shaped protrusions 414 and the heat-shrinkable sheaths 16 of the second insulated tubular busbar body 2, respectively. Silicone rubber caps 44 are fitted onto the conductors 11 at the outer ends of the first and second insulated tubular busbar bodies 1 and 2, respectively. The inner port of the silicone rubber cap 44 is connected to the step body 413, and the outer port of the silicone rubber cap 44 is connected to the conductors 11 at the outer ends of the first and second insulated tubular busbar bodies 1 and 2, respectively.

[0088] Insert the sleeve body 411 into other components of the railway power supply line, so that the umbrella skirt edge body 412 is connected to other components of the railway power supply line, thereby connecting the conductor 11 at the outer end of the first section of the insulated tubular busbar body 1 and the conductor 11 at the outer end of the second section of the insulated tubular busbar body 2 to the railway power supply line respectively.

[0089] In one of the supporting examples of the first embodiment of the present invention, the exposed length of the conductor 11 at the outer end of the first insulated tubular bus body 1 and the exposed length of the conductor 11 at the outer end of the second insulated tubular bus body 2 are both 400 mm.

[0090] In a second supporting example of one of the first embodiments of the present invention, the exposed length of the conductor 11 at the outer end of the first insulated tubular bus body 1 and the exposed length of the conductor 11 at the outer end of the second insulated tubular bus body 2 are both 700 mm.

[0091] In a third supporting embodiment of the first embodiment of the present invention, the exposed length of the conductor 11 at the outer end of the first insulated tubular busbar body 1 and the exposed length of the conductor 11 at the outer end of the second insulated tubular busbar body 2 are both 550 mm.

[0092] Performance parameters of this embodiment:

[0093] Ethylene propylene rubber: tensile strength not less than 10 MPa, elongation at break not less than 350%, volume resistivity greater than 1×10⁻⁶. 15 Ω·cm, breakdown strength not less than 25kV / mm, high temperature resistance 120℃, long-term operation;

[0094] Silicone rubber: tensile strength not less than 10 MPa, elongation at break not less than 350%, volume resistivity greater than 1×10⁻⁶. 15Ω·cm, breakdown strength not less than 25kV / mm, high temperature resistance 250℃, low temperature resistance -60℃, long-term operation;

[0095] Insulated tubular busbar: Suitable for altitudes up to 5000m, simulating 5000m high altitude tests, AC withstand voltage test of 124kV, no breakdown or flashover in 1 minute, partial discharge less than 5pC, passes impulse voltage test of 250kV positive and negative 10 times, low temperature resistance at -50℃, and temperature rise of no more than 50K at 6300A.

[0096] Figure 4 As a second embodiment of the first embodiment of the present invention, this embodiment is described in detail with reference to the accompanying drawings. The cold shrink intermediate joint 3 is configured to further include a watch strap contact 302 and a watch strap contact 302 and a waterproof adhesive layer 35 are respectively provided between the copper sleeve 33 and the first section of the insulated tubular bus body 1, and between the copper sleeve 33 and the second section of the insulated tubular bus body 2.

[0097] The watchband contact finger 302, stainless steel inner lining core 31, pin 32, copper sleeve 33, stainless steel sheath 34, waterproof adhesive layer 35, inner shielding tube 36, joint insulation layer 37, and heat shrink tubing outer sheath 38 enable connection with the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2. The watchband contact finger 302 replaces the spring contact finger 301. Its technical purpose is to serve as a component for docking the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2.

[0098] Figure 8 As the third embodiment of the first embodiment of the present invention, this embodiment is described in detail with reference to the accompanying drawings. It also includes an inner conical plug-in head device 5, and the inner conical plug-in head device 5 is configured to be connected to the outer end of the first section of the insulated tubular busbar body 1.

[0099] In this embodiment, the inner cone insertion / removal head device 5 includes a heat shrink tubing 51, a tail tube 52, a spring 53, a cone support 54, a sealing gasket 55, a sealing ring 56, a bolt 57, an insulating cone 58, an epoxy sleeve 59, a conductive sheet 591, a conductive post 592, and a positioning cylinder 593. The inner end face of the epoxy sleeve 59 is configured to be in contact with the gas filling cabinet. The bolt 57 is configured to be threadedly connected to the inner end face of the epoxy sleeve 59 and the shell wall of the gas filling cabinet. A sealing ring 56 is provided between the inner end face of the epoxy sleeve 59 and the shell wall of the gas filling cabinet. The conductive post 592 is configured to be insulated from the first section. The outer end of the tubular busbar body 1 is connected by a sleeve, and the positioning cylinder 593 is configured to be connected to the conductive post 592 by a sleeve. The epoxy sleeve 59 is configured to be connected to the positioning cylinder 593 by a sleeve, and a conductive plate 591 is provided between the conductive post 592 and the positioning cylinder 593. An insulating cone 58 is provided between the epoxy sleeve 59 and the first section of the insulated tubular busbar body 1, and a cone support 54 is provided between the insulating cone 58 and the shell wall of the gas filling cabinet. The tail tube 52 is configured to be connected to the cone support 54 by a sleeve, and a spring 53 is provided between the tail tube 52 and the cone support 54. The inner end face of the tail tube 52 is connected to the gas filling cabinet shell wall. A sealing gasket 55 is provided between the shell walls of the gas holder, and a heat shrink tubing 51 is provided between the tailpipe 52 and the first section of insulated tubular busbar body 1. The heat shrink tubing 51 is respectively configured to be fitted to the tailpipe 52 and the first section of insulated tubular busbar body 1, and the heat shrink tubing 51 and the tailpipe 52 are respectively configured as conical cylindrical bodies. The spring 53 is configured as a columnar spring, and the cone support 54 is configured as a U-shaped cylindrical body, with the outer end of the middle ring of the cone support 54 configured to contact one end of the spring 53, and the other end of the spring 53 configured to contact the inner wall of the tailpipe 52. The sealing gasket 55 and sealing ring 56 are respectively set as circular annular bodies and bolt 57 is set as hexagonal nut. Bolt 57 is set to be arranged at intervals along the periphery of epoxy sleeve 59 and insulating cone 58 is set as convex cylindrical body. Epoxy sleeve 59 is set as conical cylindrical body and conductive plate 591 is set as " " shaped plate. Conductive plate 591 is set to be arranged at intervals along the periphery of conductive post 592 and conductive post 592 is set as cylindrical body. Positioning cylinder 593 is set as U-shaped seat and positioning cylinder 593 is set to be connected to gas filling cabinet. Conductive post 592 is set to be connected to components in gas filling cabinet.

[0100] The inner cone insertion / extraction head device 5 forms a support connection point for the first section of the insulated tubular busbar body 1. The heat shrink tubing 51, insulating cone 58, epoxy sleeve 59, and conductive post 592 realize the connection with the first section of the insulated tubular busbar body 1. The cone support 54, sealing gasket 55, sealing ring 56, bolt 57, insulating cone 58, epoxy sleeve 59, conductive post 592, and positioning cylinder 593 realize the connection with the gas filling cabinet. The tail tube 52, spring 53, conductive plate 591, and positioning cylinder 593 realize the reinforcement treatment of the first section of the insulated tubular busbar body 1. Its technical purpose is to serve as a component for docking the first section of the insulated tubular busbar body 1 with the gas filling cabinet.

[0101] In this embodiment, the first section of insulated tubular busbar body 1, the second section of insulated tubular busbar body 2, the cold shrink intermediate joint 3 and the cold shrink terminal 4 are arranged with the inner cone plug-in head device 5 in a way that the ends are fixedly connected. The conductive post 592 is arranged to be connected to the conductor 11 of the first section of insulated tubular busbar body 1. The heat shrink tube 51 and the insulating cone 58 are respectively arranged to be connected to the heat shrink sheath 16 of the first section of insulated tubular busbar body 1.

[0102] A connection method for an insulated tubular busbar device for railway power supply lines, the third embodiment of the present invention, comprises the following steps: 1) Installing an epoxy sleeve 59 onto the shell wall of the gas-filled switchgear using bolts 57; 2) Inserting a positioning cylinder 593 into the epoxy sleeve 59; 3) Fitting a heat-shrinkable tube 51, a tail tube 52, a spring 53, a cone support 54, and an insulating cone 58 onto the heat-shrinkable sheath 16 of the first section of the insulated tubular busbar body 1; 4) Connecting the conductor 11 at the end of the first section of the insulated tubular busbar body 1 to a conductive... The conductive post 592 is inserted into the positioning cylinder 593. The conductive sheet 591 is installed between the conductive post 592 and the positioning cylinder 593. The cone support 54 is installed between the insulating cone 58 and the shell wall of the gas filling cabinet. The spring 53 is installed between the tail tube 52 and the cone support 54. The tail tube 52 is installed between the cone support 54 and the heat shrink tubing 51. The conductive post 592 is connected to the components in the gas filling cabinet, thereby connecting the conductor 11 at the outer end of the first section of the insulating tubular busbar body 1 to the gas filling cabinet.

[0103] Figure 10This is the fourth embodiment of the first embodiment of the present invention. The embodiment is described in detail with reference to the accompanying drawings. The cold-shrink intermediate joint 3 is configured to include a creepage frame 90, a first electrode plate 91, a first insert 92, a second electrode plate 93, a second insert 94, a connecting screw 95, an adhesive liner 96, a protective sleeve 97, and an insulating liner 98. The first insert 92 and the second insert 94 are respectively disposed on the creepage frame 90. Connecting screws 95 are respectively disposed between the first insert 92 and the creepage frame 90, and between the second insert 94 and the creepage frame 90. 5. The first electrode plate 91 is disposed between the first insertion tube 92 and the creepage frame 90, and the second electrode plate 93 is disposed between the second insertion tube 94 and the creepage frame 90. Adhesive linings 96 are respectively disposed between the first insertion tube 92 and the first section of insulated tubular busbar body 1, and between the second insertion tube 94 and the second section of insulated tubular busbar body 2. A protective sleeve 97 is disposed between the first section of insulated tubular busbar body 1, the second section of insulated tubular busbar body 2, and the creepage frame 90, and an insulating lining 98 is disposed in the protective sleeve 97.

[0104] In this embodiment, the climbing frame 90 is configured to include a first disc portion 901, a first plate portion 902, a second disc portion 903, a second plate portion 904, a column portion 905, and a protruding strip portion 906. Protruding strip portions 906 are respectively provided on the outer end faces of the first plate portion 902 and the second plate portion 904. The inner end faces of the first plate portion 902 and the second plate portion 904 are respectively configured to connect to the ends of the column portion 905. The inner surface of the first disc portion 901 is configured to connect to the outer end of the first plate portion 902. The inner surface of the second disc portion 903 is configured to connect to the outer end of the second plate portion 904. The outer surface faces of the first disc portion 901 and the second disc portion 903 are respectively configured to connect to the connecting screw 95. Through holes 907 are respectively provided in the first disc portion 901 and the second disc portion 903, and the protruding strip portions 906 are respectively configured to connect to the first electrode sheet 91. The first plate portion 902 is connected to the second electrode plate 91, and the outer end portion of the second plate portion 904 is connected to the second electrode plate 93. The first disc portion 901 is connected to the first insertion tube 92, and the second disc portion 903 is connected to the second insertion tube 94. The first disc portion 901 and the second disc portion 903 are respectively configured as circular rods, and the first plate portion 902 and the second plate portion 904 are respectively configured as L-shaped plates. The column portion 905 is configured as a circular rod, and the protruding strip portion 906 is configured as a rectangular strip. The column portion 905 and the protruding strip portion 906 are respectively configured to be arranged at intervals along the transverse center line of the first plate portion 902, and the through hole 907 is configured as a circular hole. The first disc portion 901, the first plate portion 902, the second disc portion 903, the second plate portion 904 and the column portion 905 are respectively configured to be embedded and connected to the insulating liner 98.

[0105] The climbing frame 90 forms a support connection point for the first electrode plate 91, the first insertion tube 92, the second electrode plate 93, the second insertion tube 94, the connecting screw 95, and the insulating liner 98. The first plate portion 902 and the protruding strip portion 906 achieve the connection with the first electrode plate 91, the first disc portion 901 achieves the connection with the first insertion tube 92, the second plate portion 904 and the protruding strip portion 906 achieve the connection with the second electrode plate 93, the second disc portion 903 achieves the connection with the second insertion tube 94, the first disc portion 901 and the second disc portion 903 achieve the connection with the connecting screw 95, and the first disc portion 901, the first plate portion 902, the second disc portion 903, the second plate portion 904, and the column portion 905 achieve the connection with the insulating liner 98. Its technical purpose is to serve as a support carrier for the first electrode plate 91 and the second electrode plate 93.

[0106] In this embodiment, the first electrode plate 91 and the second electrode plate 93 are respectively configured to include a horizontal portion 81 and an inclined portion 82, and a transparent window 83 is provided on the horizontal portion 81. The inner end of the horizontal portion 81 is configured to be connected to one end of the inclined portion 82, the other end of the inclined portion 82 of the first electrode plate 91 is configured to be connected to the first insertion tube 92, and the other end of the inclined portion 82 of the second electrode plate 93 is configured to be connected to the second insertion tube 94. The inner surface of the horizontal portion 81 and the inner surface of the inclined portion 82 are connected to the second insertion tube 94. The side portions are respectively configured to be connected to the climbing frame 90 in contact, and the outer end of the horizontal portion 81 is configured to be connected to the climbing frame 90 in a hook-on manner. The transparent window body 83 is configured to be connected to the climbing frame 90, and the outer surface of the horizontal portion 81 and the outer surface of the inclined portion 82 are respectively configured to be connected to the protective sleeve 97. The horizontal portion 81 is configured as an L-shaped sheet and the inclined portion 82 is configured as a rectangular strip. The transparent window body 83 is configured as a rectangular hole and the transparent window body 83 is configured to be arranged at intervals along the transverse center line of the horizontal portion 81.

[0107] The first electrode plate 91 and the second electrode plate 93 form a support connection point for the climbing frame 90, the first insertion tube 92, the second insertion tube 94 and the protective sleeve 97. The horizontal part 81, the inclined part 82 and the transparent window body 83 realize the connection with the climbing frame 90. The inclined part 82 realizes the connection with the first insertion tube 92 and the second insertion tube 94. The horizontal part 81 and the inclined part 82 realize the connection with the protective sleeve 97. Its technical purpose is to serve as a component for connecting the first insertion tube 92 and the second insertion tube 94 with the climbing frame 90.

[0108] In this embodiment, intermittent holes 72 are respectively provided on the side of the tube portion 71 of the first insertion tube 92 and the second insertion tube 94. A mounting hole 73 is provided on the bottom end portion of the tube portion 71 and is configured to connect with the connecting screw 95. The open portion of the tube portion 71 is configured to connect with the creepage frame 90, and the tube portion 71 and the intermittent holes 72 are configured to be accommodatingly connected with the adhesive liner 96. The open sidewall of the tube portion 71 of the first insertion tube 92 is configured to connect with the first electrode plate 91, and the open sidewall of the tube portion 71 of the second insertion tube 94 is configured to connect with the first electrode plate 91. The wall portion is configured to connect with the second electrode plate 93. The tube portion 71 of the first insertion tube 92 is configured to connect with the first section of the insulated tubular busbar body 1, and the tube portion 71 of the second insertion tube 94 is configured to connect with the second section of the insulated tubular busbar body 2. The tube portion 71 is configured as a circular blind tube body, and the mounting hole body 73 is configured as a circular hole body. The intermittent hole body 72 is configured as a rectangular hole body, and the intermittent hole body 72 is configured to be arranged at intervals along the circumferential line of the tube portion 71. The intermittent hole body 72 is configured to be arranged at intervals along the transverse center line of the tube portion 71.

[0109] The first insertion tube 92 and the second insertion tube 94 form a support connection point for the creeper frame 90, the first electrode plate 91, the second electrode plate 93, the connecting screw 95 and the adhesive liner 96. The tube 71 realizes the connection with the creeper frame 90, the first electrode plate 91 and the second electrode plate 93. The mounting hole 73 realizes the connection with the connecting screw 95 and the intermittent hole 72 realizes the connection with the adhesive liner 96. Its technical purpose is to serve as a component for connecting the first section of insulated tubular busbar body 1 and the second section of insulated tubular busbar body 2.

[0110] In this embodiment, the connecting screw 95 is a hexagonal nut and is respectively configured to be connected in series with the first insertion tube 92 and the second insertion tube 94. The inner end of the connecting screw 95 is configured to be threadedly connected with the climbing frame 90 and the connecting screw 95 is configured to be embeddedly connected with the adhesive liner 96.

[0111] The connecting screw 95 forms a support connection point for the climbing frame 90, the first insertion tube 92, the second insertion tube 94, and the adhesive liner 96. The connecting screw 95 realizes the connection with the climbing frame 90, the first insertion tube 92, the second insertion tube 94, and the adhesive liner 96. Its technical purpose is to serve as a component for connecting the first insertion tube 92 and the second insertion tube 94 with the climbing frame 90.

[0112] In this embodiment, the adhesive liner 96 is configured to have a coagulated layer comprising, by weight: 60-70% conductive silicone, 9-14% epoxy resin, 5-7% quartz sand, 10-15% silica fume and 4-6% hydroxymethyl cellulose, and the adhesive liner 96 is configured to be enclosedly connected to the first insertion tube 92, the second insertion tube 94 and the connecting screw 95.

[0113] By bonding the liner 96, a support connection point is formed for the first insertion tube 92, the second insertion tube 94, and the connecting screw 95. The bonding liner 96 realizes the connection with the first insertion tube 92, the connection with the second insertion tube 94, and the connection with the connecting screw 95. Its technical purpose is to serve as a component for connecting the first insertion tube 92 with the first section of the insulated tubular busbar body 1 and the second insertion tube 94 with the second section of the insulated tubular busbar body 2.

[0114] In this embodiment, the protective sleeve 97 is configured as an outer sheath of a heat shrink tubing, and one end of the protective sleeve 97 is configured to be connected to the first section of the insulated tubular busbar body 1, and the other end of the protective sleeve 97 is configured to be connected to the second section of the insulated tubular busbar body 2. The protective sleeve 97 is configured to be enclosedly connected to the first electrode plate 91, the second electrode plate 93 and the insulating liner 98.

[0115] The protective sleeve 97 forms a support connection point for the first electrode plate 91, the second electrode plate 93, and the insulating liner 98. The protective sleeve 97 enables the connection with the first electrode plate 91, the second electrode plate 93, and the insulating liner 98. Its technical purpose is to serve as a component for connecting the first section of the insulating tubular busbar body 1 and the second section of the insulating tubular busbar body 2.

[0116] In this embodiment, the insulating liner 98 is configured as a solidified layer having 60-70% quartz sand, 20-30% polyurethane and 10-18% ordinary silicate cement by weight, and the insulating liner 98 is configured to be embeddedly connected to the protective sleeve 97, and the insulating liner 98 is configured to be enclosedly connected to the creepage frame 90, the first electrode plate 91 and the second electrode plate 93.

[0117] The insulating liner 98 forms a support connection point for the creeper frame 90, the first electrode plate 91, the second electrode plate 93, and the protective sleeve 97. The adhesive liner 96 realizes the connection with the creeper frame 90, the first electrode plate 91, the second electrode plate 93, and the protective sleeve 97. Its technical purpose is to serve as a component for insulation between the first section of the insulated tubular busbar body 1 and the second section of the insulated tubular busbar body 2.

[0118] In this embodiment, the tube 71 is configured to be connected to the inclined portion 82, the horizontal portion 81 and the inclined portion 82 are respectively configured to be connected to the first electrode plate 91 and the second electrode plate 93, and the transparent window body 83 is configured to be connected to the protruding portion 906.

[0119] In one of the supporting examples of the first embodiment of the present invention, the adhesive liner 96 is configured to have a coagulated layer comprising, by weight: 60% conductive silicone, 9% epoxy resin, 5% quartz sand, 10% silica fume and 4% hydroxymethyl cellulose.

[0120] In this embodiment, the insulating liner 98 is configured as a binder having 60% silica sand, 20% polyurethane and 10% ordinary silicate cement by weight.

[0121] In the second supporting example of the first embodiment of the present invention, the adhesive liner 96 is configured to have a coagulated layer comprising, by weight: 70% conductive silicone, 14% epoxy resin, 7% quartz sand, 15% silica fume and 6% hydroxymethyl cellulose.

[0122] In this embodiment, the insulating liner 98 is configured as a binder having 70% silica sand, 30% polyurethane and 18% ordinary silicate cement by weight.

[0123] In the third supporting example of the first embodiment of the present invention, the adhesive liner 96 is configured to have a coagulated layer comprising, by weight: 65% conductive silicone, 12% epoxy resin, 6% quartz sand, 12% silica fume and 5% hydroxymethyl cellulose.

[0124] In this embodiment, the insulating liner 98 is configured as a binder having 65% silica sand, 25% polyurethane and 14% ordinary silicate cement by weight.

[0125] A connection method for an insulated tubular busbar device for railway power supply lines, the fourth of the first embodiments of the present invention, comprises the following steps:

[0126] The horizontal portion 81 and inclined portion 82 of the first electrode plate 91 are mounted on the first plate portion 902. The transparent window body 83 of the first electrode plate 91 is mounted on the protruding portion 906 of the first plate portion 902. The first disc portion 901 is inserted into the first insertion tube 92. The first connecting screw 95 is threaded through the mounting hole 73 of the first insertion tube 92, so that the first connecting screw 95 is threadedly connected to the first disc portion 901, completing the installation between the first insertion tube 92 and the climbing frame 90. The horizontal portion 81 and inclined portion 82 of the second electrode plate 93 are then mounted on the first plate portion 902. 2. Install the second electrode plate 93 onto the second plate 904, install the transparent window 83 of the second electrode plate 93 onto the protruding strip 906 of the second plate 904, insert the second disc 903 into the second insertion tube 94, and thread the second connecting screw 95 through the mounting hole 73 of the second insertion tube 94 to connect the second connecting screw 95 with the second disc 903, thus completing the installation between the second insertion tube 94 and the climbing frame 90. Then, fit the protective sleeve 97 onto the horizontal part 81 and the inclined part 82, and fold the end of the protective sleeve 97 inwards.

[0127] The tube 71 of the first insertion tube 92 is inserted into the conductor 11 of the first insulated tubular busbar body 1, and the tube 71 of the second insertion tube 94 is inserted into the conductor 11 of the second insulated tubular busbar body 2. According to the weight ratio, 60-70% conductive silicone, 9-14% epoxy resin, 5-7% quartz sand, 10-15% silica fume, and 4-6% hydroxymethyl cellulose are mixed to prepare the adhesive liner 96 raw material. The adhesive liner 96 raw material is then injected under high pressure into the first insertion tube through the through-hole body 907. Between the tube portion 71 of tube 92 and the first disc portion 901, the material overflows outward through the intermittent orifice 72 of the first insert tube 92, connecting the tube portion 71 of the first insert tube 92 to the conductor 11 of the first section of the insulated tubular busbar body 1. The adhesive liner 96 material is injected under high pressure into the space between the tube portion 71 of the second insert tube 94 and the second disc portion 903 through the through-hole 907, overflowing outward through the intermittent orifice 72 of the second insert tube 94, connecting the tube portion 71 of the second insert tube 94 to the conductor 11 of the second section of the insulated tubular busbar body 2.

[0128] According to the weight ratio: 60-70% quartz sand, 20-30% polyurethane and 10-18% ordinary silicate cement are mixed to prepare the insulating liner 98 raw material. The insulating liner 98 raw material is poured into the protective sleeve 97. The insulating liner 98 raw material is poured between the creepage frame 90, the first electrode plate 91 and the second electrode plate 93. One of the ports of the protective sleeve 97 is turned outward so that one of the ports of the protective sleeve 97 is connected to the first section of the insulated tubular busbar body 1. The other port of the protective sleeve 97 is turned outward so that the other port of the protective sleeve 97 is connected to the second section of the insulated tubular busbar body 2.

[0129] One of the supporting examples of the first embodiment of the present invention involves the following steps: mixing 60% conductive silicone, 9% epoxy resin, 5% quartz sand, 10% silica fume, and 4% hydroxymethyl cellulose by weight to obtain adhesive liner 96 raw material.

[0130] According to the weight ratio: 60% quartz sand, 20% polyurethane and 10% ordinary silicate cement are mixed to prepare the insulation lining material 98.

[0131] The second supporting example of the first embodiment of the present invention involves the following steps: mixing 70% conductive silicone, 14% epoxy resin, 7% quartz sand, 15% silica fume and 6% hydroxymethyl cellulose by weight to obtain adhesive liner 96 raw material.

[0132] According to the weight ratio: 70% quartz sand, 30% polyurethane and 18% ordinary silicate cement are mixed to prepare the insulation lining material 98.

[0133] The third supporting example of the first embodiment of the present invention involves the following steps: mixing 65% conductive silicone, 12% epoxy resin, 6% quartz sand, 12% silica fume and 5% hydroxymethyl cellulose by weight to obtain the adhesive liner 96 raw material.

[0134] According to the weight ratio: 65% quartz sand, 25% polyurethane and 14% ordinary silicate cement are mixed to prepare the raw material for insulating lining 98.

[0135] When verifying the present invention, by bonding the liner 96 and the insulating liner 98, the inorganic composition filling of the cold shrink intermediate joint 3 between the conductor 11 of the first section of the insulating tubular busbar body 1 and the conductor 11 of the second section of the insulating tubular busbar body 2 was realized, which improved the insulation and temperature adaptability of the cold shrink intermediate joint 3 and prevented the phenomenon of changes in the internal structure of the cold shrink intermediate joint 3 due to large temperature difference.

[0136] The second embodiment of the present invention features an insulated tubular busbar body integrated with a metal tubular body as the conductive main body.

[0137] In this embodiment, the insulated tubular busbar body includes a first insulated tubular busbar body 1 and a second insulated tubular busbar body 2.

[0138] In this embodiment, a first accessory device is also included and is disposed on the insulated tubular busbar body. The first accessory device is configured as a cold shrink intermediate joint 3.

[0139] In this embodiment, the cold shrink intermediate joint 3 is configured to include a spring contact finger 301, a stainless steel inner liner core 31, a pin 32, a copper sleeve 33, a stainless steel sheath 34, a waterproof adhesive layer 35, an inner shielding tube 36, a joint insulation layer 37, a heat shrink tubing outer sheath 38, and a joint stress cone 39.

[0140] In this embodiment, the cold shrink intermediate joint 3 is configured to also include a watch strap contact finger 302.

[0141] In this embodiment, the cold shrink intermediate joint 3 is configured to include a creepage frame 90, a first electrode plate 91, a first insertion tube 92, a second electrode plate 93, a second insertion tube 94, a connecting screw 95, an adhesive liner 96, a protective sleeve 97, and an insulating liner 98.

[0142] In this embodiment, a second accessory device is also included, and the second accessory device is disposed between the insulated tubular busbar body and the railway power supply line. The second accessory device is configured as a cold shrink terminal 4.

[0143] In this embodiment, a third accessory device is also included and is disposed between the insulated tubular busbar body and the gas-filled switchgear, and the second accessory device is configured as an inner cone plug-in head device 5.

[0144] The second embodiment of the present invention is based on the first embodiment.

[0145] In a second embodiment of the present invention, the step is to use a metal tubular body in an insulated tubular busbar body as a conductive component connected to a railway power supply line.

[0146] The second embodiment of the present invention is based on the first embodiment.

[0147] In a second embodiment of the present invention, the step is to use a metal tubular body in an insulated tubular busbar body as a conductive component connected to a railway power supply line.

[0148] The second embodiment of the present invention is based on the first embodiment.

[0149] Application of an insulated tubular busbar device and connection method for railway power supply lines in 27.5kV power supply lines.

[0150] This invention has the following characteristics:

[0151] 1. Due to the design of the insulated tubular busbar body, the metal tubular body is used as the conductive body, which overcomes the impact of high-altitude areas with relatively thin air, large temperature difference between day and night and high solar radiation intensity on railway power supply lines, thus improving the safety performance of railway power supply lines.

[0152] 2. Due to the design of the cold shrink intermediate joint 3, the connection between the insulated tubular busbar bodies is realized.

[0153] 3. Due to the design of spring contact finger 301, watch strap contact finger 302, stainless steel inner lining core 31, pin shaft 32, copper sleeve 33, stainless steel sheath 34, waterproof adhesive layer 35, inner shielding tube 36, joint insulation layer 37, heat shrink tubing outer sheath 38, joint stress cone 39, inner ring flange 311, and outer ring flange 331, the external clamping connection between the conductors 11 of the insulated tubular busbar body is realized.

[0154] 4. Due to the design of the creepage frame 90, the first electrode plate 91, the first insertion tube 92, the second electrode plate 93, the second insertion tube 94, the connecting screw 95, the adhesive liner 96, the protective sleeve 97 and the insulating liner 98, the internal expansion connection between the conductors 11 of the insulating tubular busbar body is realized.

[0155] 5. Due to the design of the cold shrink terminal 4, the connection between the insulated tubular busbar body and the railway power supply line was realized.

[0156] 6. Due to the design of the inner cone plug-in head device 5, the connection between the insulated tubular busbar body and the gas-filled cabinet is realized.

[0157] 7. Because the design limits the numerical range of the structural shape, the numerical range is a technical feature in the technical solution of this invention, and is not a technical feature obtained by formula calculation or a limited number of experiments. The experiment shows that the technical feature of this numerical range has achieved very good technical effect.

[0158] 8. Due to the design of the technical features of this invention, and the combined effect of the individual and collective technical features, experiments have shown that the performance indicators of this invention are at least 1.7 times that of existing performance indicators, and the invention has been evaluated to have good market value.

[0159] Other technical features that are the same as or similar to those of the insulating tubular busbar body with the metal tubular body as the conductive body are also embodiments of the present invention. Furthermore, the technical features of the above embodiments can be combined in any way. In order to meet the requirements of the Patent Law, the Implementing Regulations of the Patent Law and the Examination Guidelines, all possible combinations of the technical features in the above embodiments will no longer be described.

[0160] The above embodiments are merely one implementation of the insulated tubular busbar device and connection method for railway power supply lines and their applications provided by the present invention. Other modifications to the solution provided by the present invention, additions or reductions of components or steps, or application of the present invention to other technical fields similar to the present invention, all fall within the protection scope of the present invention.

Claims

1. An insulated tubular busbar device for railway power supply lines, characterized in that: It includes an insulated tubular busbar body for connecting to railway power supply lines. The insulated tubular busbar body includes a first insulated tubular busbar body (1) and a second insulated tubular busbar body (2). It also includes a first accessory device and is disposed on the insulated tubular busbar body. The first accessory device is configured as a cold-shrink intermediate joint (3). It also includes a second accessory device, which is located between the insulated tubular busbar body and the railway power supply line. The second accessory device is a cold-shrink terminal (4). It also includes a third accessory device, which is located between the insulated tubular busbar body and the gas-filled switchgear. The third accessory device is configured as an internal conical plug-in head device (5). A cold-shrink intermediate joint (3) is provided between the first section of the insulated tubular busbar body (1) and the second section of the insulated tubular busbar body (2), and cold-shrink terminals (4) are respectively provided on the first section of the insulated tubular busbar body (1) and the second section of the insulated tubular busbar body (2). The cold shrink intermediate joint (3) is configured to include a spring contact finger (301), a stainless steel inner liner core (31), a pin (32), a copper sleeve (33), a stainless steel sheath (34), a waterproof adhesive layer (35), an inner shielding tube (36), a joint insulation layer (37), a heat shrink tubing outer sheath (38), and a joint stress cone (39). An inner ring flange (311) is provided in the middle of the outer side of the stainless steel inner liner core (31), and an outer ring flange (331) is provided in the middle of the outer side of the copper sleeve (33). The ends of the stainless steel inner liner core (31) are respectively configured to be connected in series with the first section of the insulated tubular busbar body (1) and the second section of the insulated tubular busbar body (2). The pin (32) is respectively configured to be connected to the stainless steel inner liner core (31). The first section of insulated tubular busbar body (1) and the second section of insulated tubular busbar body (2) are plugged together, and the copper sleeve (33) is configured to be sleeved together with the first section of insulated tubular busbar body (1) and the second section of insulated tubular busbar body (2). A spring contact finger (301) and a waterproof adhesive layer (35) are respectively provided between the copper sleeve (33) and the first section of insulated tubular busbar body (1), and between the copper sleeve (33) and the second section of insulated tubular busbar body (2). A stainless steel sheath (34) is configured to be sleeved together with the copper sleeve (33). The ends of the copper sleeve (33) and the stainless steel sheath (34) are respectively configured to be contacted with the first section of insulated tubular busbar body (1) and the second section of insulated tubular busbar body (2). The inner shielding tube (36) is configured to be connected in a sleeve-type connection with the stainless steel sheath (34), the first section of insulated tubular busbar body (1), and the second section of insulated tubular busbar body (2). The joint insulation layer (37) is configured to be connected in a sleeve-type connection with the inner shielding tube (36), the first section of insulated tubular busbar body (1), and the second section of insulated tubular busbar body (2). The heat shrink tubing outer sheath (38) is configured to be connected in a sleeve-type connection with the joint insulation layer (37), the first section of insulated tubular busbar body (1), and the second section of insulated tubular busbar body (2). Joint stress cones (39) are respectively provided between the joint insulation layer (37) and the first section of insulated tubular busbar body (1) and between the joint insulation layer (37) and the second section of insulated tubular busbar body (2), and the inner ring is provided. The flange (311) is arranged along the same circumference as the outer ring flange (331). The stainless steel inner liner (31), copper sleeve (33), and stainless steel sheath (34) are respectively cylindrical, and the pin (32) is a circular rod. The waterproof adhesive layer (35) is a silicone rubber sealant. The inner shielding tube (36) is an imported liquid semi-conductive silicone rubber shield. The joint insulation layer (37) is an imported liquid insulating silicone rubber column. The heat shrink tubing outer sheath (38) is a flame-retardant and UV-resistant polyolefin tubing. The joint stress cone (39) is an imported liquid semi-conductive silicone rubber cone with uniform electric field strength at the busbar outer shield port. The inner ring flange (311) and the outer ring flange (331) are circular ring bodies. The cold shrink intermediate joint (3) is configured to also include a watch strap contact (302). A watch strap contact (302) and a waterproof adhesive layer (35) are respectively provided between the copper sleeve (33) and the first section of the insulated tubular busbar body (1) and between the copper sleeve (33) and the second section of the insulated tubular busbar body (2). The inner cone plug-in head device (5) is configured to connect to the outer end of the first section of the insulated tubular busbar body (1).

2. The insulated tubular busbar device for railway power supply lines according to claim 1, characterized in that: The technical feature of integrating the insulated tubular busbar body using a metal tubular body as the conductive main body.

3. The insulated tubular busbar device for railway power supply lines according to claim 1, characterized in that: The first section of the insulated tubular busbar body (1) and the second section of the insulated tubular busbar body (2) are respectively configured to include a conductor (11), an inner shielding layer (12), an insulation layer (13), an outer shielding layer (14), a copper strip shielding layer (15), and a heat-shrinkable sheath (16). The outer surface layer of the conductor (11) is connected to the inner shielding layer (12), the outer surface layer of the inner shielding layer (12) is connected to the insulation layer (13), the outer surface layer of the insulation layer (13) is connected to the outer shielding layer (14), the outer surface layer of the outer shielding layer (14) is connected to the copper strip shielding layer (15), and the outer surface layer of the copper strip shielding layer (15) is connected to the heat-shrinkable sheath (16). The inner end of the conductor (11) of the main body (1) and the inner end of the conductor (11) of the second section of the insulated tubular busbar body (2) are respectively connected to the cold shrink intermediate joint (3), and the outer end of the conductor (11) of the first section of the insulated tubular busbar body (1) and the outer end of the conductor (11) of the second section of the insulated tubular busbar body (2) are respectively connected to the cold shrink terminal (4). The conductor (11) is a copper tube body and the inner shielding layer (12) is a semi-conductive ethylene propylene rubber layer, the insulation layer (13) is a high temperature resistant ethylene propylene rubber layer, the outer shielding layer (14) is a semi-conductive ethylene propylene rubber layer, the copper strip shielding layer (15) is a double-layer overlapping copper strip layer, and the heat shrink sheath (16) is a flame-retardant and UV-resistant polyolefin sheath.

4. The insulated tubular busbar device for railway power supply lines according to claim 1, characterized in that: The cold-shrink terminal (4) is configured as a silicone rubber insulating layer (41), a silicone rubber stress cone (42), a grounding wire (43), and a silicone rubber cap (44). The silicone rubber insulating layer (41) is configured to be connected to the first section of the insulated tubular busbar body (1) or the second section of the insulated tubular busbar body (2) in a sleeve-type connection. The silicone rubber stress cone (42) and the grounding wire (43) are respectively located between the inner end of the silicone rubber insulating layer (41) and the first section of the insulated tubular busbar body (1) or between the silicone rubber insulating layer. (41) is located between the inner end of the first section of the insulated tubular busbar body (2) and the silicone rubber cap (44) is located between the outer end of the silicone rubber insulating layer (41) and the first section of the insulated tubular busbar body (1) or between the outer end of the silicone rubber insulating layer (41) and the second section of the insulated tubular busbar body (2). The silicone rubber stress cone (42) is set as an inlet liquid semi-conductive silicone rubber horn cone with uniform electric field strength at the outer screen port of the busbar. The grounding wire (43) is set as a 70mm² copper braided strip with terminals. The silicone rubber cap (44) is set as a waterproof and sealed convex cylindrical body.

5. The insulated tubular busbar device for railway power supply lines according to claim 4, characterized in that: The silicone rubber insulation layer (41) is configured to include a sleeve body (411) and a skirt edge body (412), and the outer side of the sleeve body (411) is configured to be connected to the skirt edge body (412). A step body (413) is provided on the outer end side of the sleeve body (411), and an arc-shaped protrusion (414) is provided on the inner end of the sleeve body (411). The sleeve body (411) is configured to be connected to the first section of the insulating tubular busbar body (1) and the second section of the insulating tubular busbar body (2), and the arc-shaped protrusion (414) is configured to be connected to the silicone rubber stress cone part (42) and the grounding wire part (43), respectively. The step body (413) is configured to be connected to the silicone rubber cap part (44), and the skirt edge body (412) is configured to be connected to other components of the railway power supply line. The sleeve body (411) is set as a circular tubular body and the umbrella skirt edge body (412) is set as an umbrella skirt shape. The step body (413) is set as a threaded body and the outline of the arc-shaped protrusion (414) is set as part of the circumference line. The umbrella skirt edge body (412) is set to eleven to seventeen and is arranged at intervals along the transverse center line of the sleeve body (411). The length of the sleeve body (411) is set to 1400-2400mm. The length between the outer end of the sleeve body (411) and the outer end of the conductor (11) of the first section of the insulated tubular busbar body (1) and the length between the outer end of the sleeve body (411) and the outer end of the conductor (11) of the second section of the insulated tubular busbar body (2) are respectively set to 400-700mm.

6. The insulated tubular busbar assembly for railway power supply lines according to any one of claims 1 to 5, characterized in that: The first section of insulated tubular busbar body (1), the second section of insulated tubular busbar body (2), and the cold shrink intermediate joint (3) and cold shrink terminal (4) are arranged in a plug-in manner, with one cold shrink terminal (4) connected to the first section of insulated tubular busbar body (1) and the other cold shrink terminal (4) connected to the second section of insulated tubular busbar body (2). The conductor (11) is connected to the stainless steel inner core (31) and the pin (32) respectively. The inner shielding layer (12) The insulating layer (13) is respectively connected to the copper sleeve (33), the stainless steel sheath (34) and the inner shielding tube (36), the copper strip shielding layer (15) and the heat shrink sheath (16) are respectively connected to the joint insulating layer (37), the heat shrink sleeve outer sheath (38) and the joint stress cone (39), the sleeve body (411), the silicone rubber stress cone part (42) and the grounding wire part (43) are respectively connected to the heat shrink sheath (16), and the silicone rubber cap part (44) is connected to the conductor (11).

7. The insulated tubular busbar device for railway power supply lines according to claim 1, characterized in that: The inner cone insertion / removal head device (5) includes a heat shrink tubing (51), a tail tube (52), a spring (53), a cone support (54), a sealing gasket (55), a sealing ring (56), a bolt (57), an insulating cone (58), an epoxy sleeve (59), a conductive plate (591), a conductive post (592), and a positioning cylinder (593). The inner end face of the epoxy sleeve (59) is configured to be in contact with the gas filling cabinet. The bolt (57) is configured to be threadedly connected to the inner end face of the epoxy sleeve (59) and the shell wall of the gas filling cabinet. A sealing ring (56) is provided between the inner end face of the epoxy sleeve (59) and the shell wall of the gas filling cabinet. The conductive post (592) is configured to be insulated from the first section. The outer end of the tubular busbar body (1) is connected by a sleeve, and the positioning cylinder (593) is configured to be connected to the conductive post (592) by a sleeve. The epoxy sleeve (59) is configured to be connected to the positioning cylinder (593) by a sleeve, and a conductive plate (591) is provided between the conductive post (592) and the positioning cylinder (593). An insulating cone (58) is provided between the epoxy sleeve (59) and the first section of the insulated tubular busbar body (1), and a cone support (54) is provided between the insulating cone (58) and the shell wall of the gas-filled cabinet. The tail tube (52) is configured to be connected to the cone support (54) by a sleeve, and a spring (53) is provided between the tail tube (52) and the cone support (54). A sealing gasket (55) is provided between the end face and the shell wall of the gas-filled cabinet, and a heat shrink tube (51) is provided between the tail tube (52) and the first section of the insulated tubular busbar body (1). The heat shrink tube (51) is respectively set to be connected to the tail tube (52) and the first section of the insulated tubular busbar body (1) in a sleeve manner. The heat shrink tube (51) and the tail tube (52) are respectively set to be conical cylindrical bodies. The spring (53) is set to be a column spring. The cone support (54) is set to be a U-shaped cylindrical body. The outer end face of the middle ring of the cone support (54) is set to be connected to one end of the spring (53). The other end of the spring (53) is set to be connected to the inner wall of the tail tube (52). The sealing gasket (55) and sealing ring (56) are respectively set as circular rings and the bolt (57) is set as a hexagonal nut. The bolt (57) is set to be arranged at intervals along the periphery of the epoxy sleeve (59) and the insulating cone (58) is set as a convex cylindrical body. The epoxy sleeve (59) is set as a conical cylindrical body and the conductive sheet (591) is set as a [-shaped plate. The conductive sheet (591) is set to be arranged at intervals along the periphery of the conductive post (592) and the conductive post (592) is set as a cylindrical body. The positioning cylinder (593) is set as a U-shaped seat and the positioning cylinder (593) is set to be connected to the gas filling cabinet. The conductive post (592) is set to be connected to the components in the gas filling cabinet.

8. The insulated tubular busbar device for railway power supply lines according to claim 7, characterized in that: The first section of insulated tubular busbar body (1), the second section of insulated tubular busbar body (2), the cold shrink intermediate joint (3) and the cold shrink terminal (4) are arranged with the inner cone plug-in head device (5) in a fixed connection manner at the end. The conductive post (592) is arranged to be connected to the conductor (11) of the first section of insulated tubular busbar body (1). The heat shrink tube (51) and the insulating cone (58) are respectively arranged to be connected to the heat shrink sheath (16) of the first section of insulated tubular busbar body (1).

9. A method for connecting an insulated tubular busbar device for railway power supply lines according to any one of claims 1 to 8, characterized in that the steps are: The metal tubular body in the insulated tubular busbar is used as a conductive component for connection with the railway power supply line.

10. The connection method of the insulated tubular busbar device according to claim 9, characterized in that: the steps are: The ends of the first insulated tubular busbar body (1) and the second insulated tubular busbar body (2) are stripped, leaving the conductors (11) at the ends of the first insulated tubular busbar body (1) and the second insulated tubular busbar body (2) exposed. The exposed lengths of the conductors (11) at the outer ends of the first insulated tubular busbar body (1) and the second insulated tubular busbar body (2) are 400-700 mm respectively. The conductors (11) at the inner end of the first insulated tubular busbar body (1) and the conductors (11) at the inner end of the second insulated tubular busbar body (2) are respectively inserted into the stainless steel inner core (31), so that the outer end faces of the conductors (11) at the inner end of the first insulated tubular busbar body (1) and the outer end faces of the conductors (11) at the inner end of the second insulated tubular busbar body (2) are respectively in contact with the inner ring flange (311). The pins (32) are respectively inserted into the pin holes between the stainless steel inner core (31) and the conductors (11), so that the pins (32) are arranged at intervals along the periphery of the conductors (11) at the inner end of the first insulated tubular busbar body (1) and the periphery of the conductors (11) at the inner end of the second insulated tubular busbar body (2). Next, install four sets of spring contacts (301) on the outer surface of the conductor (11). Apply a waterproof adhesive layer (35) to the outer surface of the conductor (11) at the inner end of the first insulated tubular busbar body (1) and the outer surface of the conductor (11) at the inner end of the second insulated tubular busbar body (2). Install the copper sleeve (33) on the outer surface of the conductor (11) at the inner end of the first insulated tubular busbar body (1) and the outer surface of the conductor (11) at the inner end of the second insulated tubular busbar body (2). Install two stainless steel sheaths (34) on the outer end face of the outer ring flange (331). Install the inner shielding tube (36) on the stainless steel sheath (34), the insulation layer (13) of the first insulated tubular busbar body (1), and the insulation layer (13) of the second insulated tubular busbar body (2). Between the inner shielding tube (36), the copper strip shielding layer (15) of the first section of the insulated tubular busbar body (1), and the copper strip shielding layer (15) of the second section of the insulated tubular busbar body (2), the outer sheath (38) of the heat shrink tubing is installed between the joint insulation layer (37), the heat shrink sheath (16) of the first section of the insulated tubular busbar body (1), and the heat shrink sheath (16) of the second section of the insulated tubular busbar body (2), and the joint stress cone (39) is inserted between the joint insulation layer (37) and the copper strip shielding layer (15) of the first section of the insulated tubular busbar body (1), and between the joint insulation layer (37) and the copper strip shielding layer (15) of the second section of the insulated tubular busbar body (2), respectively, to complete the docking connection of the first section of the insulated tubular busbar body (1) and the second section of the insulated tubular busbar body (2). Sleeves (411) are fitted onto the heat-shrinkable sheaths (16) at the outer ends of the first section of the insulating tubular busbar body (1) and the second section of the insulating tubular busbar body (2), respectively. Silicone rubber stress cones (42) and grounding wires (43) are inserted between the arc-shaped protrusion (414) and the heat-shrinkable sheaths (16) of the first section of the insulating tubular busbar body (1), and between the arc-shaped protrusion (414) and the heat-shrinkable sheaths (16) of the second section of the insulating tubular busbar body (2), respectively. Silicone rubber caps (44) are respectively fitted onto the conductors (11) at the outer ends of the first insulated tubular busbar body (1) and the conductors (11) at the outer ends of the second insulated tubular busbar body (2), so that the inner port of the silicone rubber cap (44) is connected to the step body (413), and the outer port of the silicone rubber cap (44) is connected to the conductors (11) at the outer ends of the first insulated tubular busbar body (1) and the conductors (11) at the outer ends of the second insulated tubular busbar body (2). Insert the sleeve body (411) into other components of the railway power supply line, so that the umbrella skirt edge body (412) is connected to other components of the railway power supply line, thereby connecting the conductor (11) at the outer end of the first section of the insulated tubular busbar body (1) and the conductor (11) at the outer end of the second section of the insulated tubular busbar body (2) to the railway power supply line respectively.

11. The connection method of the insulated tubular busbar device according to claim 9, characterized in that: the steps are: Install the epoxy sleeve (59) onto the shell wall of the gas-filled cabinet using bolts (57). Insert the positioning cylinder (593) into the epoxy sleeve (59). Fit the heat-shrink tubing (51), tail tube (52), spring (53), cone support (54), and insulating cone (58) onto the heat-shrink sheath (16) of the first section of the insulated tubular busbar body (1). Connect the conductor (11) at the end of the first section of the insulated tubular busbar body (1) to the conductive post (592). Insert the conductive post (592) into the positioning cylinder (593). 93) Install the conductive sheet (591) between the conductive post (592) and the positioning cylinder (593), install the cone support (54) between the insulating cone (58) and the shell wall of the gas filling cabinet, install the spring (53) between the tail tube (52) and the cone support (54), install the tail tube (52) between the cone support (54) and the heat shrink tubing (51), connect the conductive post (592) to the components in the gas filling cabinet, thereby connecting the conductor (11) at the outer end of the first section of the insulating tubular busbar body (1) to the gas filling cabinet.

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