Electrified railway contact net and electrified railway system

Abstract

The utility model relates to an electrified railway contact net and an electrified railway system. The electrified railway contact net comprises a connection structure, a multipurpose connector box, a composite wire, monitoring equipment and an optical fiber detection system, the electrified railway overhead line system adopts the composite wire compounded with the optical unit and is matched with the optical fiber detection system, so that multiple functions of optical fiber communication, traction power supply system protection and intelligent monitoring can be realized on the premise of ensuring the mechanical and electrical performance of the protection wire; compared with the traditional independent design of the protection line and the communication optical cable, the independent installation mode reduces the construction cost and the construction period; an installation and connection scheme of a composite wire is provided, so that installation and connection of a traditional protection wire are met, and optical fibers are connected to form an optical fiber network; meanwhile, the multipurpose connector box which can meet the requirement for connection of optical fibers between the optical fiber composite protection lines of the electrified railway and can also achieve signal access of monitoring equipment such as sensors and cameras along the railway is developed, construction is facilitated, and meanwhile the difficulty of daily operation and maintenance is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of electrified railways, in particular to an electrified railway contact network and an electrified railway system. Background Art

[0002] my country's electrified railway traction power supply system has entered the era of intelligence and digitalization. The rapid development of electrified railways has further increased the demand for operational safety. Due to the harsh working environment of the contact network, frequent contact network failures have become one of the biggest weak links in the traction power supply system, thus putting higher requirements on the railway contact network system monitoring technology.

[0003] At present, the daily operation and maintenance of the contact network requires a large number of professional and experienced contact network workers to carry out regular and irregular manual inspections, vehicle inspections, monitoring vehicles and other methods. It is impossible to achieve continuous recording and monitoring of the operating status and technical parameters of the contact network, and it is impossible to discover and eliminate problems arising during operation in real time, and it is impossible to predict and determine possible faults. Moreover, manual inspections and judgments are prone to misjudgment. At the same time, when the contact network fails, the inspection of the fault point will consume a lot of manpower and time, and the timeliness of emergency repairs cannot be guaranteed. Utility Model Content

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem in the existing technology that the daily operation and maintenance of the contact network requires a large number of contact network workers with professional experience to be carried out through regular and irregular manual inspections, vehicle inspections, monitoring vehicles, etc., and it is impossible to achieve continuous recording and monitoring of the operating status and technical parameters of the contact network, and it is impossible to discover and eliminate problems arising during operation in real time, and it is impossible to predict and determine possible faults. Moreover, manual inspections and judgments are also prone to misjudgments. At the same time, when the contact network fails, the inspection of the fault point will consume a lot of manpower and time, and the timeliness of emergency repairs cannot be guaranteed.

[0005] In order to solve the above technical problems, the utility model provides an electrified railway contact network, comprising:

[0006] A connection structure, wherein a plurality of connection structures are arranged at intervals, each of the connection structures comprises a vertically arranged column, two groups of anchoring members symmetrically arranged on both sides of the column are connected to the side of the column, a connecting rod is installed on each of the two anchoring members, a first insulator is provided at one end of the connecting rod away from the anchoring member, the first insulator is connected to a hanging plate, and the hanging plate is connected to a tension fitting;

[0007] A multi-purpose junction box, wherein a plurality of the multi-purpose junction boxes are provided and respectively connected to each of the pillars, and each of the multi-purpose junction boxes is provided with a branching device;

[0008] A composite wire, wherein a plurality of composite wires are provided, and both ends of the plurality of composite wires are respectively connected to two tension fittings on two adjacent columns, the composite wire comprises an optical unit, and the optical unit comprises an optical fiber, and the optical fibers of the two composite wires connected to each column are fused to each other in a multi-purpose splice box on the column and connected to the branching device;

[0009] An optical fiber detection system is connected to the optical fiber.

[0010] In one embodiment of the present invention, the multi-purpose junction box includes a box base and a box cover, the box base is bowl-shaped, and a protective wire clamp is connected to each side of the box base, and a fixed terminal located between the box base and the protective wire clamp is also connected to each side of the box base, and a conical threaded through hole is provided on the fixed terminal, a conical rubber plug is provided in the threaded through hole, and a tightening terminal is also screwed into the threaded through hole; at the same time, the box cover is fastened to the box base by fasteners, and the brancher is provided on the box cover.

[0011] In one embodiment of the present invention, the optical units of the two composite wires connected to each of the pillars are respectively clamped by the two protective wire clamps, and the optical fibers of the two optical units sequentially pass through a set of tightening terminals, conical rubber plugs and fixed terminals to extend into the box seat and are fused with each other.

[0012] In one embodiment of the present invention, a plurality of reserved interfaces are further provided on the box cover.

[0013] In one embodiment of the present invention, a monitoring device is further included. The monitoring device is provided in plurality and is respectively installed on each of the columns, and the monitoring devices are respectively connected to the branch of the multi-purpose junction box on the column where they are located.

[0014] In one embodiment of the present invention, a fixing bracket is provided on the side of the column, the multi-purpose junction box is installed on the fixing bracket, and a second insulator is provided between the multi-purpose junction box and the fixing bracket.

[0015] In one embodiment of the present invention, the composite wire further comprises a metal wire unit, and the metal wire units of the two composite wires connected to each of the columns are connected via a jumper wire.

[0016] In one embodiment of the present invention, the metal wire unit includes an inner metal wire and an outer metal wire, the optical unit and a plurality of the inner metal wires are twisted into a core, and a plurality of the outer metal wires are twisted outside the core.

[0017] In one embodiment of the present invention, the connecting rod is a telescopic connecting rod.

[0018] An electrified railway system comprises the electrified railway contact network as described in any one of the above.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses an electrified railway contact network and an electrified railway system, comprising a connection structure, a multi-purpose junction box, a composite wire and an optical fiber detection system; the connection structure comprises a column, two sets of anchoring parts are connected to the side of the column, a connecting rod is installed on the two anchoring parts, a first insulator is provided on the connecting rod, the first insulator is connected to a hanging plate, and the hanging plate is connected to a tension fitting; a plurality of multi-purpose junction boxes are provided and respectively connected to each column; a plurality of composite wires are provided, two ends of the plurality of composite wires are respectively connected to two tension fittings on two adjacent columns, the composite wires comprise optical units, and the optical fibers of the optical units of the two composite wires connected to each column are mutually connected in the junction box on this column; the optical fiber detection system connects the optical fibers; the utility model discloses an electrified railway contact network, which adopts a composite wire with an optical unit and cooperates with an optical fiber detection system to realize multiple functions of optical fiber communication, traction power supply system protection and intelligent monitoring under the premise of ensuring the mechanical and electrical performance of the protection wire, and reduces the construction cost and construction period compared with the traditional mode of independent design and installation of protection wire and communication optical cable. It also provides an installation and splicing solution for electrified railway composite lines, which meets the installation and splicing requirements of traditional protection lines while realizing optical fiber splicing to form an optical fiber network. At the same time, it has developed a multi-purpose junction box that can not only meet the optical fiber splicing requirements between optical fiber composite protection lines of electrified railways, but also realize signal access for sensors, cameras and other monitoring equipment along the railway, facilitating construction while reducing the difficulty of daily operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0022] Figure 1 This is a schematic structural diagram of an electrified railway contact network according to a preferred embodiment of the present invention;

[0023] Figure 2 It is a structural diagram of the connection structure of the electrified railway contact network of the preferred embodiment of the utility model;

[0024] Figure 3 This is a structural diagram of a multi-purpose junction box for an electrified railway contact network according to a preferred embodiment of the present utility model;

[0025] Figure 4 It is a structural schematic diagram of a composite wire of an electrified railway contact network according to a preferred embodiment of the utility model.

[0026] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Connection structure; 11. Post; 12. Anchor; 13. Connecting rod; 14. First insulator; 15. Hanging plate; 16. Strain fittings; 17. Parallel groove clamp; 18. Jumper; 2. Multi-purpose junction box; 21. Box seat; 22. Box cover; 221. Reserved interface; 23. Protective wire clamp; 24. Fixed terminal; 25. Conical rubber plug; 26. Tightening terminal; 27. Splitter; 28. Fixed bracket; 29. ​​Second insulator; 3. Composite wire; 31. Optical unit; 311. Optical fiber; 312. Outer protective tube; 313. Fiber jelly; 32. Metal wire unit; 321. Inner metal wire; 322. Outer metal wire; 4. Optical fiber detection system; 41. Guide optical cable; 5. Monitoring equipment. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention. Example 1

[0028] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model is an electrified railway contact network, comprising:

[0029] A plurality of connection structures 1 are provided at intervals. Each connection structure 1 includes a vertically arranged column 11. Two sets of anchoring members 12 are connected to the side surfaces of the column 11 and are symmetrically arranged on both sides thereof. A connecting rod 13 is mounted on each of the anchoring members 12. A first insulator 14 is provided at one end of the connecting rod 13 away from the anchoring member 12. The first insulator 14 is connected to a hanging plate 15. The hanging plate 15 is connected to a tension fitting 16.

[0030] Multipurpose junction box 2, there are multiple multipurpose junction boxes 2 and they are connected to each column 11 respectively, and each multipurpose junction box 2 is provided with a branching device 27;

[0031] Multiple composite wires 3 are provided, and the ends of the multiple composite wires 3 are respectively connected to two tension fittings 16 on two adjacent columns 11. The composite wires 3 include an optical unit 31, and the optical unit 31 includes an optical fiber 311. The optical fibers 311 of the two composite wires 3 connected to each column 11 are fused to each other in the multi-purpose splice box 2 on this column 11 and connected to the branching device 27;

[0032] The optical fiber detection system 4 is connected to the optical fiber 311 .

[0033] Specifically, multiple composite wires 3 are connected through the connection structure 1, and the ends of two adjacent composite wires 3 to be connected are respectively connected to two tension fittings 16 on a column 11, and then 5m-10m are led out from the tail end of the tension fitting 16, and all metal wire units 32 with a length of 2m-4m at the tail end of the lead-out section are stripped off to leave only the optical unit 31, and then the two optical units 31 are respectively passed through the protective wire clamps 23 on both sides of the multi-purpose junction box 2 and inserted into the multi-purpose junction box 2, and the two inserted optical units 31 are stripped off in the multi-purpose junction box 2 to expose the optical fiber 311, and the optical fiber 311 is connected, and the connected optical fiber is connected to the splitter of the multi-purpose junction box 2 and the optical fiber detection system, and then connected to each monitoring device 5 through the splitter 27.

[0034] Specifically, the optical unit 31 in the composite line 3 can utilize the Raman dispersion, Brillouin dispersion, and Rayleigh dispersion characteristics of the optical fiber 311 to conduct real-time online monitoring of temperature, wind vibration, icing and other parameters of the entire electrified railway composite line through a distributed optical fiber detection system 4, and transmit and store the monitoring information through optical fiber networking. Through system analysis, the operating status trend analysis, fault identification, intelligent early warning and other functions of the electrified railway composite line can be performed, greatly improving the intelligent and digital management level of the electrified railway traction power supply system.

[0035] The utility model discloses an electrified railway overhead contact network, which utilizes a composite line 3 with a composite optical unit 31 and is coupled with an optical fiber detection system 4. This system achieves multiple functions, including optical fiber communication, traction power supply system protection, and intelligent monitoring, while ensuring the mechanical and electrical performance of the protection line. This reduces construction costs and time compared to the traditional model of independently designing and installing protection lines and communication optical cables. Furthermore, the utility model provides an installation and splicing solution for electrified railway composite lines, meeting the requirements of traditional protection line installation and splicing while also enabling the splicing of optical fibers 311 to form an optical fiber network. Furthermore, a multi-purpose junction box 2 has been developed that can both splice optical fibers 311 between electrified railway composite protection lines and enable signal access to monitoring equipment 5, such as sensors and cameras, along the railway line. This facilitates construction while reducing the difficulty of daily operation and maintenance.

[0036] Specifically, the optical fiber detection system 4 of the substation control center can be connected to the connected optical fiber 311 through the guide optical cable 41, so as to realize the perception and data storage of the operating temperature, vibration and other status parameters of the optical fiber composite protection line along the railway, so as to facilitate railway operation and maintenance personnel to grasp the line operation status in real time.

[0037] Reference Figure 3As shown, further, the multi-purpose junction box 2 includes a box base 21 and a box cover 22 connected together by bolts and nuts. The box base 21 is bowl-shaped, and a protective wire clamp 23 is connected to both sides of the box base 21, and a fixed terminal 24 is also connected to both sides of the box base 21 and located between it and the protective wire clamp 23. A conical threaded through hole is provided on the fixed terminal 24, and a conical rubber plug 25 is provided in the threaded through hole. A tightening terminal 26 is also screwed into the threaded through hole; at the same time, the box cover 22 is fastened to the box base 21 by fasteners, and a branching device 27 is provided on the box cover 22.

[0038] Furthermore, the optical units 31 of the two composite wires 3 connected to each column 11 are respectively clamped by two protective wire clamps 23, and the optical fibers 311 of the two optical units 31 sequentially pass through a set of clamping terminals 26, tapered rubber plugs 25, and fixed terminals 24 to extend into the box seat 21 and are fused to each other. Specifically, the protective wire clamps 23 include an upper clamp and a lower clamp connected together by fasteners. The optical units 31 are clamped when passing through the protective wire clamps 23, thereby preventing the composite wire 3 from loosening and slipping; the clamping terminals 26 and the fixed terminals 24 are connected by threads. By tightening the clamping terminals 26, the tapered rubber plugs 25 can be squeezed to achieve the fixation and sealing of the optical units 31 passing through, preventing external moisture from entering the interior of the multi-purpose junction box 2.

[0039] Specifically, after removing a certain length of outer protective tube 312 from the end of the optical unit 31 extending into the multi-purpose splice closure 2, the fiber paste 313 on the optical fiber 311 is wiped off for splicing. The excess optical unit 31 is coiled inside the splice closure and can be used as residual fiber for subsequent splicing when a splicing point fails or when connecting to other optical fibers 311. Preferably, a fiber storage tray can be provided in the splice closure.

[0040] Furthermore, a plurality of reserved interfaces 221 are provided on the box cover 22. Devices such as sensors and cameras can be connected through the reserved interfaces 221.

[0041] Reference Figure 2 As shown, further, it also includes a monitoring device 5, which is provided in plurality and respectively installed on each column 11, and the monitoring device 5 is respectively connected to the branch device 27 of the multi-purpose junction box 2 on the column 11 where it is located.

[0042] Furthermore, a fixing bracket 28 is provided on the side of the column 11 , the multipurpose junction box 2 is mounted on the fixing bracket 28 , and a second insulator 29 is provided between the multipurpose junction box 2 and the fixing bracket 28 .

[0043] Reference Figure 4As shown, the composite cable 3 further includes metal wire units 32. The metal wire units 32 of the two composite cables 3 connected to each column 11 are connected via jumper wires. Specifically, the metal wire units of the two composite cables are connected via parallel groove clamps 17 and jumper wires 18. More preferably, a guy wire can be installed on the column to support and secure the cable.

[0044] Furthermore, the metal wire unit 32 includes an inner metal wire 321 and an outer metal wire 322. The optical unit 31 and multiple inner metal wires 321 are twisted into a core, and multiple outer metal wires 322 are twisted outside the core. Specifically, the optical unit 31 includes an optical fiber 311 and an outer protective tube 312. The optical fiber 311 is arranged in a non-linear shape such as a spiral or wave in the outer protective tube 312, and a fiber paste 313 is filled between the optical fiber 311 and the outer protective tube 312. The fiber paste 313 has properties such as heat resistance, water resistance, and hydrogen absorption. It can coexist with the optical fiber 311 and the outer protective tube 312 in the natural environment for a long time, ensuring that the performance of the optical fiber 311 can remain stable for a long time. The outer protective tube 312 can be made of stainless steel, aluminum, aluminum alloy, or other weather-resistant non-metallic materials. Specifically, the inner metal wire 321 can be made of galvanized steel wire or aluminum-clad steel wire; the outer metal wire 322 can be made of aluminum wire.

[0045] Furthermore, the connecting rod 13 is a telescopic connecting rod. It is conceivable that the installation distance between the composite wire 3 and the column 11 can be adjusted by the telescopic connecting rod 13, thereby meeting the installation requirements. Example 2

[0046] The utility model also discloses an electrified railway system, comprising the electrified railway contact network of the first embodiment.

[0047] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An electrified railway contact network, characterized in that: include: A connection structure, wherein a plurality of connection structures are arranged at intervals, each of the connection structures comprises a vertically arranged column, two groups of anchoring members symmetrically arranged on both sides of the column are connected to the side of the column, a connecting rod is installed on each of the two anchoring members, a first insulator is provided at one end of the connecting rod away from the anchoring member, the first insulator is connected to a hanging plate, and the hanging plate is connected to a tension fitting; A multi-purpose junction box, wherein a plurality of the multi-purpose junction boxes are provided and respectively connected to each of the pillars, and each of the multi-purpose junction boxes is provided with a branching device; A composite wire, wherein a plurality of composite wires are provided, and both ends of the plurality of composite wires are respectively connected to two tension fittings on two adjacent columns, the composite wire comprises an optical unit, and the optical unit comprises an optical fiber, and the optical fibers of the two composite wires connected to each column are fused to each other in a multi-purpose splice box on the column and connected to the branching device; An optical fiber detection system is connected to the optical fiber.

2. The electrified railway contact network according to claim 1, characterized in that: The multi-purpose junction box includes a box base and a box cover. The box base is bowl-shaped, and is connected to a protective wire clamp on both sides of the box base. The box base is also connected to a fixed terminal located between the box base and the protective wire clamp on both sides. The fixed terminals are each provided with a conical threaded through hole, a conical rubber plug is provided in the threaded through hole, and a tightening terminal is also screwed into the threaded through hole. At the same time, the box cover is fastened to the box base by fasteners, and the brancher is provided on the box cover.

3. The electrified railway contact network according to claim 2, characterized in that: The optical units of the two composite wires connected to each column are clamped by the two protective wire clamps respectively, and the optical fibers of the two optical units sequentially pass through a set of tightening terminals, conical rubber plugs and fixed terminals to extend into the box seat and are fused with each other.

4. The electrified railway contact network according to claim 2, characterized in that: The box cover is also provided with a plurality of reserved interfaces.

5. The electrified railway contact network according to claim 1, characterized in that: It also includes monitoring equipment, which is provided in plurality and respectively installed on each of the columns, and the monitoring equipment is respectively connected to the branch of the multi-purpose junction box on the column where it is located.

6. The electrified railway contact network according to claim 1, characterized in that: A fixing bracket is provided on the side surface of the column, the multi-purpose junction box is installed on the fixing bracket, and a second insulator is provided between the multi-purpose junction box and the fixing bracket.

7. The electrified railway contact network according to claim 1, characterized in that: The composite wire further comprises a metal wire unit, and the metal wire units of the two composite wires connected to each of the columns are connected via a jumper wire.

8. The electrified railway contact network according to claim 7, characterized in that: The metal wire unit includes an inner metal wire and an outer metal wire. The optical unit and a plurality of the inner metal wires are twisted together to form a wire core, and a plurality of the outer metal wires are twisted outside the wire core.

9. The electrified railway contact network according to claim 1, characterized in that: The connecting rod is a telescopic connecting rod.

10. An electrified railway system, characterized in that: Comprising the electrified railway contact network as described in any one of claims 1-9.

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