High-speed rail power supply line T-connection structure

Abstract

The utility model relates to a T-connection structure of a high-speed rail power supply line, which belongs to the technical field of contact networks and comprises a power supply line positioned between contact network struts on two sides, one end of the power supply line is electrically connected with an isolating switch of each contact network strut, the other end of the power supply line is communicated with a contact network on a line, and a door-shaped electric connection is arranged between a carrier cable and a contact line. The electric connecting piece is used for connecting a carrier cable, a contact line and a power supply line at the position where the power supply line is connected with the net, and a strain clamp is arranged between the contact net supporting columns on the two sides and used for hanging the power supply line. The application has the effect of improving the connection stability of the power supply line.

Description

Technical Field

[0001] The present application relates to the field of contact network technology, and in particular to a T-connection structure for a high-speed railway power supply line. Background Art

[0002] The overhead contact network is a high-voltage transmission line that is set up in a zigzag shape above the rails in an electrified railway and is used by the pantograph to draw current. The overhead contact network is the main structure of the railway electrification project and is a special form of transmission line set up above the railway line to supply power to electric locomotives. It consists of contact suspension, support device, positioning device, pillars and foundation.

[0003] The contact suspension includes contact wires, suspension strings, load-bearing cables, connecting parts and insulators. The contact suspension is erected on the pillar through a supporting device, and its function is to transmit the electric energy obtained from the traction substation to the electric locomotive. The supporting device is used to support the contact suspension and transmit its load to the pillar or other buildings. It varies according to the section, station and large building where the contact network is located. The supporting device includes wrist arms, horizontal pull rods, suspension insulator strings, rod insulators and special supporting equipment for other buildings. The positioning device includes a positioning tube and a positioner, and its function is to fix the position of the contact wire so that the contact wire is within the operating track of the pantograph slide, ensure that the contact wire and the pantograph are not separated, and transmit the horizontal load of the contact wire to the pillar. At present, when the power line is connected to the contact network, a T-shaped wire clamp is usually used to connect the power line to the contact line.

[0004] However, according to the long-term operation of the overhead power line, the T-connection installation of the power line is a weak link that affects the safety of the power line. The existing T-connection installation of the power line is affected by gravity, atmospheric corrosion, vibration and other factors at the T-connection, which causes the line resistance to increase and the current carrying capacity to decrease. The continuous heating at the line clamp causes the wire strands and wires to break, affecting the operation of the train. Utility Model Content

[0005] In order to improve the connection stability of the power supply line, the present application provides a T-connection structure for a high-speed railway power supply line.

[0006] The present application provides a high-speed railway power supply line T-connection structure adopts the following technical solution:

[0007] A T-connection structure for a high-speed railway power supply line comprises a power supply line located between two iron towers, one end of the power supply line is electrically connected to a disconnector on the iron tower, and the other end is connected to a load-bearing cable, an electrical connector is provided between the load-bearing cable and the contact wire, and the electrical connector is used to electrically connect the power supply line and the contact wire, and a suspension member is provided between the two iron towers, and the suspension member is used to suspend the power supply line.

[0008] Optionally, the suspension member includes a connecting cable located between the iron towers on both sides, the connecting cable includes a first connecting cable and a second connecting cable, one end of the first connecting cable and the second connecting cable are respectively fixedly connected to the iron towers on both sides, the power line is connected to the free ends of the first connecting cable and the second connecting cable, the free end of the first connecting cable is provided with a bowl head hanging plate for hanging the power line, and the free end of the second connecting cable is provided with a bolt-type tension clamp for hanging the power line.

[0009] Optionally, a first club head suspension insulator is provided between the free end of the first connecting rope and the bowl head hanging plate, and between the free end of the second connecting rope and the bolt-type tension clamp.

[0010] Optionally, the suspension member includes a first connecting line arranged between the load-bearing cable and the contact line, the first connecting line is gate-shaped, the connecting rope, the power supply line and the load-bearing cable are electrically connected through a first wire clamp, and the two free ends of the first connecting line and the power supply line are electrically connected through a second wire clamp.

[0011] Optionally, the suspension member includes a connecting rod disposed between the iron towers on both sides, and the power supply line is fixed to the connecting rod via a third wire clamp.

[0012] Optionally, the electrical connector includes a second connecting wire arranged between the load-bearing cable and the contact wire, the second connecting wire is in a ring shape and is open, and the horizontal section of the second connecting wire parallel to the load-bearing cable and the contact wire is fixedly connected to the load-bearing cable and the contact wire by a fourth wire clamp; the free end of the power supply wire is fixedly connected to the vertical section of the second connecting wire by a fifth wire clamp.

[0013] Optionally, a portion of the second connecting line between the vertical hanging section and the free end is horizontal, and the portion of the second connecting line that is a horizontal section is fixedly connected to the load-bearing cable through a sixth wire clamp.

[0014] Optionally, both ends of the connecting rod are fixedly connected to the iron tower through a pestle ring rod and a second pestle head suspension insulator.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. When the contact network is supplying power, first set up a suspension between the towers on both sides, then hang the power line on the suspension, then fix one end of the power line on the disconnector, and connect the other end of the power line to the contact line through an electrical connector, thereby completing the power supply of the contact line. Under the action of the suspension, the power line is a complete line, thereby reducing the possibility of T-connection of the power line, thereby reducing the possibility of breakage of the power line, and thereby improving the connection stability of the power line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0018] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0019] Figure 3 yes Figure 1 A magnified schematic diagram of part B;

[0020] Figure 4 yes Figure 1 A magnified schematic diagram of part C;

[0021] Figure 5 is a schematic diagram of the overall structure of Example 2;

[0022] Figure 6 yes Figure 1 An enlarged schematic diagram of part D in the middle;

[0023] Figure 7 yes Figure 1 Enlarged schematic diagram of part E in the middle.

[0024] Description of reference numerals: 1. Iron tower; 2. Disconnector; 3. Load-bearing cable; 4. Contact wire;

[0025] 5. Electrical connector; 51. First connecting wire; 52. First wire clamp; 53. Second wire clamp; 54. Second connecting wire; 55. Fourth wire clamp; 56. Fifth wire clamp; 57. Sixth wire clamp;

[0026] 6. Suspension member; 61. First connecting rope; 62. Second connecting rope; 63. Bowl head hanging plate; 64. Bolt type tension clamp; 65. First club head suspension insulator; 66. Connecting rod;

[0027] 7. Second pestle head suspension insulator; 8. Power supply line. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-7 This application is described in further detail.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 and Figure 3The T-connection structure of the high-speed railway power supply line includes a power supply line 8 located between the iron towers 1 on both sides, one end of the power supply line 8 is electrically connected to the isolating switch 2 on the iron tower 1, and the other end is connected to the load-bearing cable 3, an electrical connector 5 is arranged between the load-bearing cable 3 and the contact wire 4, the electrical connector 5 is used to electrically connect the power supply line 8 and the contact wire 4, and a suspension member 6 is arranged between the iron towers 1 on both sides, and the suspension member 6 is used to suspend the power supply line 8; when the contact network is supplying power, the suspension member 6 is firstly set up between the iron towers 1 on both sides, and then the power supply line 8 is hung on the suspension member 6, and then one end of the power supply line 8 is fixedly connected to the isolating switch 2, and the other end of the power supply line 8 is connected to the contact wire 4 through the electrical connector 5, so as to complete the power supply of the contact wire 4, and under the action of the suspension member 6, the power supply line 8 is a complete line, thereby reducing the possibility of the power supply line 8 being T-connected, thereby reducing the possibility of the power supply line 8 being broken, and thereby improving the connection stability of the power supply line 8.

[0031] Reference Figure 1 , Figure 2 and Figure 4 In the embodiment of the present application, the suspension member 6 includes a connecting cable located between the iron towers 1 on both sides, and the connecting cable includes a first connecting cable 61 and a second connecting cable 62. The first connecting cable 61 and the second connecting cable 62 are both pestle-ring rods. One end of the first connecting cable 61 and the second connecting cable 62 are respectively fixedly connected to the iron towers 1 on both sides, and the power line 8 is connected to the free ends of the first connecting cable 61 and the second connecting cable 62. The free end of the first connecting cable 61 is provided with a bowl head hanging plate 63 for hanging the power line 8, and the free end of the second connecting cable 62 is provided with a bolt-type tension clamp 64 for hanging the power line 8; when the power line 8 is installed, the two ends of the power line 8 are respectively electrically connected to the disconnector 2 and the contact network on the iron tower 1, and the middle section of the power line 8 is hung on the second connecting cable 62 through the bolt-type tension clamp 64, thereby reducing the possibility of T-connection of the power line 8, thereby avoiding the weak points of the electrical connection in the conventional T-connection scheme, avoiding the risk of line breakage, and improving the reliability of the equipment.

[0032] Reference Figure 2 and Figure 4 Furthermore, in the embodiment of the present application, a first pestle head suspension insulator 65 is provided between the free end of the first connecting rope 61 and the bowl head hanging plate 63, and between the free end of the second connecting rope 62 and the bolt-type tension clamp 64; under the action of the insulator, the insulation effect of the power supply line 8 is improved, thereby improving the safety of the power supply line 8.

[0033] Reference Figure 1 and Figure 3In the implementation of the present application, the suspension member 6 includes a first connecting wire 51 arranged between the load-bearing cable 3 and the contact wire 4, the first connecting wire 51 is gate-shaped, the connecting rope, the power supply wire 8 and the load-bearing cable 3 are electrically connected through the first wire clamp 52, and the two free ends of the first connecting wire 51 and the power supply wire 8 are electrically connected through the second wire clamp 53; after the power supply wire 8 is connected to the disconnector 2, the power supply wire 8 is fixed to the load-bearing cable 3 and the contact wire 4 through the wire clamp, completing the electrical connection between the power supply wire 8 and the contact wire 4.

[0034] The implementation principle of Example 1 is:

[0035] When the contact network is supplying power, first, the first connecting rope 61 and the second connecting rope 62 are set up between the towers 1 on both sides, and then the power supply line 8 is hung on the bolt-type tension clamp 64, and then one end of the power supply line 8 is fixedly connected to the disconnector 2, and the other end of the power supply line 8 is connected to the contact line 4 through the first connecting wire 51, thereby completing the power supply of the contact line 4. Under the action of the bolt-type tension clamp 64, the power supply line 8 is a complete line, thereby reducing the possibility of the power supply line 8 being connected, thereby reducing the possibility of the power supply line 8 being broken, and thereby improving the connection stability of the power supply line 8.

[0036] Example 2

[0037] The difference between Example 2 and Example 1 is that, referring to Figure 5 , Figure 6 and Figure 7 The suspension member 6 includes a connecting rod 66 arranged between the iron towers 1 on both sides, and the power line 8 is fixed on the connecting rod 66 through the third wire clamp 58, and the connecting rod 66 is a pestle ring rod; when the power line 8 is installed, the two ends of the pestle ring rod are fixed on the iron towers 1 on both sides, and then the middle section of the power line 8 is fixed on the pestle ring rod through the third wire rack, and the operation is simple and convenient.

[0038] Reference Figure 5 , Figure 6 and Figure 7 In the implementation of the present application, the electrical connector 5 includes a second connecting wire 54 arranged between the load-bearing cable 3 and the contact wire 4, the second connecting wire 54 is in a circular shape and is open, and the horizontal section of the second connecting wire 54 parallel to the load-bearing cable 3 and the contact wire 4 is fixedly connected to the load-bearing cable 3 and the contact wire 4 through a fourth wire clamp 55; the free end of the power supply wire 8 is fixedly connected to the vertical section of the second connecting wire 54 through a fifth wire clamp 56; after the power supply wire 8 is fixed on the pestle ring rod, the power supply wire 8 is respectively fixed to the load-bearing cable 3 and the contact wire 4 through the fourth wire clamp 55 and the fifth wire clamp 56 to complete the power supply of the contact wire 4, and the operation is simple and convenient.

[0039] Reference Figure 5 , Figure 6 and Figure 7In order to improve the quality of the power supply line 8 and reduce the possibility of damage to the power supply line 8 due to vibration, the portion between the vertical hanging section and the free end of the second connecting line 54 is horizontal, and the horizontal section of the second connecting line 54 is fixedly connected to the bearing cable 3 through the sixth wire clamp 57.

[0040] Reference Figure 5 , Figure 6 and Figure 7 In the present application, both ends of the connecting rod 66 are fixedly connected to the iron tower 1 through the pestle ring rod and the second pestle head suspension insulator 7.

[0041] The implementation principle of Example 2 is:

[0042] When the contact network is powered, first, a connecting rod 66 is set up between the towers 1 on both sides, and then the power line 8 is hung on the connecting rod 66. Then, one end of the power line 8 is fixedly connected to the disconnector 2, and the other end of the power line 8 is connected to the contact line 4 through the second connecting line 54, thereby completing the power supply of the contact line 4.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A T-connection structure for a high-speed railway power supply line, characterized in that: The invention comprises a power supply line (8) located between two side iron towers (1), one end of the power supply line (8) being electrically connected to an isolating switch (2) on the iron tower (1), and the other end being connected to a load-bearing cable (3), an electrical connector (5) being provided between the load-bearing cable (3) and the contact wire (4), the electrical connector (5) being used for electrically connecting the power supply line (8) and the contact wire (4), and a suspension member (6) being provided between the two side iron towers (1), the suspension member (6) being used for suspending the power supply line (8).

2. A high-speed railway power supply line T-connection structure according to claim 1, characterized in that: The suspension member (6) comprises a connecting cable located between the iron towers (1) on both sides, the connecting cable comprising a first connecting cable (61) and a second connecting cable (62), one end of the first connecting cable (61) and the second connecting cable (62) being fixedly connected to the iron towers (1) on both sides respectively, the power supply line (8) being connected to the free ends of the first connecting cable (61) and the second connecting cable (62), the free end of the first connecting cable (61) being provided with a bowl head hanging plate (63) for suspending the power supply line (8), and the free end of the second connecting cable (62) being provided with a bolt-type tension clamp (64) for suspending the power supply line (8).

3. A T-connection structure for a high-speed railway power supply line according to claim 2, characterized in that: A first club-head suspension insulator (65) is provided between the free end of the first connecting cable (61) and the bowl-head hanging plate (63), and between the free end of the second connecting cable (62) and the bolt-type tension clamp (64).

4. The T-connection structure of a high-speed railway power supply line according to claim 2, characterized in that: The suspension member (6) comprises a first connecting wire (51) arranged between the load-bearing wire (3) and the contact wire (4); the first connecting wire (51) is gate-shaped; the first connecting wire (51), the power supply wire (8) and the load-bearing wire (3) are electrically connected via a first wire clamp (52); and the two free ends of the first connecting wire (51) and the power supply wire (8) are electrically connected via a second wire clamp (53).

5. The T-connection structure of a high-speed railway power supply line according to claim 1, characterized in that: The suspension member (6) comprises a connecting rod (66) arranged between the two side iron towers (1), and the power supply line (8) is fixed to the connecting rod (66) via a third wire clamp (58).

6. A T-connection structure for a high-speed railway power supply line according to claim 5, characterized in that: The electrical connector (5) comprises a second connecting wire (54) arranged between the load-bearing wire (3) and the contact wire (4); the second connecting wire (54) is in a circular shape and is arranged with an opening; a horizontal section of the second connecting wire (54) parallel to the load-bearing wire (3) and the contact wire (4) is fixedly connected to the load-bearing wire (3) and the contact wire (4) via a fourth wire clamp (55); and a free end of the power supply wire (8) is fixedly connected to the vertical section of the second connecting wire (54) via a fifth wire clamp (56).

7. A T-connection structure for a high-speed railway power supply line according to claim 6, characterized in that: The portion of the second connecting line (54) between the vertical hanging section and the free end is horizontal, and the portion of the second connecting line (54) that is a horizontal section is fixedly connected to the load-bearing cable (3) via a sixth wire clamp (57).

8. The T-connection structure of a high-speed railway power supply line according to claim 5, characterized in that: Both ends of the connecting rod (66) are fixedly connected to the iron tower (1) via a pestle ring rod and a second pestle head suspension insulator (7).

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