Railway intelligent stranded wire monitoring system

Abstract

The invention discloses a railway intelligent stranded wire monitoring system, and relates to the technical field of railway monitoring. The system comprises an in-station monitoring chamber, a plurality of intelligent stranded wires, a plurality of vibration monitoring hosts and a plurality of temperature monitoring hosts, each intelligent stranded wire comprises an insulating core and an outer stranded wire, three optical fibers used for communication, vibration monitoring and temperature monitoring are arranged in each insulating core, the length of each intelligent stranded wire is set to be 15 km, and the intelligent stranded wires are connected in series. A joint mechanism is arranged at the joint of two adjacent intelligent stranded wires, and the plurality of vibration monitoring hosts and the plurality of temperature monitoring hosts are arranged along a railway. The intelligent stranded wire with the length of 15 km is used as a monitoring unit, networking can be achieved through series connection of the monitoring units, optical fibers in the stranded wire can be simply connected out in cooperation with the design of a novel connector mechanism, the optical fibers are connected with a vibration monitoring host and a temperature monitoring host which are arranged, and the monitoring precision and stability are improved within the effective monitoring range of the host.

Description

Technical Field

[0001] The invention belongs to the technical field of railway monitoring, and in particular relates to a railway intelligent stranded wire monitoring system. Background Art

[0002] Fiber optic sensing technology has the ability to resist electromagnetic interference, withstand harsh environments, be easy to install and integrate, and perform long-length continuous distributed measurements. It has been widely used in many fields such as railways, bridges, and mines. Distributed fiber acoustic sensing technology (DAS) uses the backward Rayleigh scattered light of the laser in optical fiber transmission to demodulate the vibration signal, thereby sensing abnormal vibrations of structures along the line. Similarly, the temperature monitoring host (DTS) senses abnormal temperatures along the line. The optical fiber cable used for distributed monitoring can be used as a unit device and combined with the electrified railway stranded wire to be integrated into an intelligent stranded wire for online monitoring.

[0003] However, currently the maximum continuous monitoring length of a fiber optic vibration monitoring host (DAS) is 50km, and the maximum continuous monitoring length of a temperature monitoring host (DTS) is 15km. Due to the long length of the railway and in order to improve the monitoring accuracy, a large number of hosts are required and parallel optical fibers need to be separated from the smart stranded wire to connect the hosts.

[0004] However, since the stranded wire is very compact and the optical fiber is generally integrated at the axis of the stranded wire, such as the patent with application number 202310180531.2, the difficulty lies in how to connect the optical fiber from a specific point. Therefore, designing a monitoring system that is easy to connect and has high monitoring accuracy is a problem that needs to be solved by the staff in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a railway intelligent stranded wire monitoring system, which uses a 15km long intelligent stranded wire as a monitoring unit, and can be networked through the series connection of the monitoring units. With the design of a new joint mechanism, the optical fiber in the stranded wire can be simply connected and connected to the deployed vibration monitoring host and temperature monitoring host within the effective monitoring range of the host, thereby improving the monitoring accuracy and stability.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a railway intelligent stranded wire monitoring system, comprising a monitoring room in a station, a plurality of intelligent stranded wires, a plurality of vibration monitoring hosts and a plurality of temperature monitoring hosts; The intelligent twisted wire comprises an insulating core and an outer twisted wire, wherein the insulating core is provided with three optical fibers for communication, vibration monitoring and temperature monitoring respectively; The length of the intelligent stranded wire is set to 15 km, a plurality of the intelligent stranded wires are connected in series, and a joint mechanism is provided at the connection between two adjacent intelligent stranded wires; Several vibration monitoring hosts and several temperature monitoring hosts are arranged along the railway. The vibration monitoring hosts are connected to optical fibers for communication and vibration monitoring, and the temperature monitoring hosts are connected to optical fibers for communication and vibration temperature. There are three intelligent twisted wires between two adjacent vibration monitoring hosts, and there is a single intelligent twisted wire between two adjacent temperature monitoring hosts. The joint mechanism includes an inner insulating tube, an outer pole tube and three three-way connectors, the three three-way connectors are respectively connected between three optical fibers of two adjacent intelligent strands, and an extension joint is connected to the branch of the three-way connector, and the extension joints on the three three-way connectors are in the same direction; The insulating core extends beyond the outer strands to form a boss, the inner insulating tube is sleeved outside the boss between the two intelligent strands, and the inner insulating tube is provided with an inner paving opening that cooperates with three extension joints; The outer pole tube is sleeved on the inner insulating tube and the outer twisted wires of two adjacent intelligent twisted wires, and the two outer twisted wires are electrically connected through the outer pole tube. A side surface of the outer pole tube is provided with a yield groove with one end extending to the outer end surface.

[0007] Furthermore, a plurality of pressure points are provided in the area where the outer pole tube overlaps with the outer twisted wire, and the outer pole tube is electrically connected to the outer twisted wire via the pressure points.

[0008] Furthermore, the three three-way connectors are located in the inner insulating tube, and intervals are formed between the three-way connectors and the inner insulating tube.

[0009] Furthermore, the three optical fibers all extend beyond the insulating core and are connected to external connectors, and the external connectors are connected to the main connector of the three-way connector.

[0010] Furthermore, the inner insulating tube is filled with a rubber filler, the connection between the three-way connector and the outer joint is sealed by the rubber filler, and the inlet of the rubber filler is an inner make-way port and a make-way groove.

[0011] Furthermore, the inner insulating tube is composed of a group of symmetrically arranged half-tube bodies, and the two half-tube bodies are connected to each other by fasteners.

[0012] Furthermore, both ends of the inner insulating tube are provided with expanded neck ends, the fasteners are arranged on the expanded neck ends, and the outer surface of the expanded neck ends is flush with the outer surface of the outer twisted wire.

[0013] Furthermore, the three optical fibers are distributed in a herringbone shape, the outer surface of the insulating core is a cylindrical structure, and the outer twisted wire is wound and arranged outside the insulating core.

[0014] Furthermore, both ends of the outer pole tube are integrally connected with cone sleeve ends, and the small-diameter ends of the cone sleeve ends face outwards.

[0015] The present invention has the following beneficial effects: 1. The present invention uses a 15km long intelligent stranded cable as a monitoring unit. The monitoring units can be networked through serial connection. With the design of a new connector mechanism, the optical fiber in the stranded cable can be simply connected and connected to the vibration monitoring host and temperature monitoring host within the effective monitoring range of the host, thereby improving the monitoring accuracy and stability.

[0016] 2. The present invention arranges three optical fibers in the twisted wire, which are used for communication, temperature monitoring and vibration monitoring respectively, and divides communication and monitoring into three paths. The function of each optical fiber is single and independent, which can improve the monitoring accuracy of the corresponding data. The arrangement of the communication line can improve the data transmission between the monitoring room and the monitoring room, thereby improving the monitoring effect.

[0017] 3. The present invention designs a new type of connector mechanism, so that the stranded wire and the three optical fibers can be connected separately, and there will be no interference between the lines, which is convenient for the operator to operate.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a railway intelligent stranded wire monitoring system according to the present invention; Figure 2 It is a structural schematic diagram of the intelligent stranding and joint mechanism; Figure 3 for Figure 2 Schematic diagram of the structure from a bird's-eye view; Figure 4 for Figure 3 A structural cross-sectional view at the position of the middle joint mechanism; Figure 5 It is a schematic diagram of the structure of the intelligent stranded wire, the inner insulating tube and the three-way connector; Figure 6 It is a schematic diagram of the structure of the intelligent stranded wire and three-way connector; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1- monitoring room in the station, 2- intelligent twisted wire, 3- vibration monitoring host, 4- temperature monitoring host, 5- connector mechanism, 201- insulating core, 202- outer twisted wire, 203- optical fiber, 204- boss, 205- outer connector, 501- inner insulating tube, 502- outer pole tube, 503- three-way connector, 504- extension connector, 505- expanded neck end, 506- inner make way port, 507- make way groove, 508- pressure point, 509- cone sleeve end. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-6 As shown, the present invention is a railway intelligent stranded wire monitoring system, comprising a monitoring room 1 in a station, a plurality of intelligent stranded wires 2, a plurality of vibration monitoring hosts 3 and a plurality of temperature monitoring hosts 4; The intelligent twisted wire 2 includes an insulating core 201 and an outer twisted wire 202. The insulating core 201 is provided with three optical fibers 203 for communication, vibration monitoring and temperature monitoring respectively. The length of the intelligent stranded wire 2 is set to 15 km, and a plurality of intelligent stranded wires 2 are connected in series, and a joint mechanism 5 is provided at the connection between two adjacent intelligent stranded wires 2; Several vibration monitoring hosts 3 and several temperature monitoring hosts 4 are arranged along the railway. The vibration monitoring hosts 3 are connected to the optical fiber 203 for communication and vibration monitoring, and the temperature monitoring hosts 4 are connected to the optical fiber 203 for communication and vibration temperature. There are three intelligent strands 2 between two adjacent vibration monitoring hosts 3, and there is a single intelligent strand 2 between two adjacent temperature monitoring hosts 4. The joint mechanism 5 includes an inner insulating tube 501, an outer pole tube 502 and three three-way connectors 503. The three three-way connectors 503 are respectively connected between the three optical fibers 203 of two adjacent intelligent stranded cables 2. The branches of the three-way connectors 503 are connected with extension joints 504. The extension joints 504 on the three three-way connectors 503 are oriented in the same direction. The insulating core 201 extends beyond the outer stranded wire 202 to form a boss 204. The inner insulating tube 501 is sleeved outside the boss 204 between the two intelligent stranded wires 2. The inner insulating tube 501 is provided with an inner opening 506 that cooperates with the three extension joints 504. The outer pole tube 502 is sleeved on the inner insulating tube 501 and the outer twisted wires 202 of two adjacent intelligent twisted wires 2. The two outer twisted wires 202 are electrically connected through the outer pole tube 502. The outer pole tube 502 is provided with a clearance groove 507 on the side surface thereof, one end of which extends to the outer end surface.

[0023] Among them Figure 2-3 As shown, a plurality of pressure points 508 are provided in the area where the outer pole tube 502 and the outer twisted wire 202 overlap, and the outer pole tube 502 is electrically connected to the outer twisted wire 202 via the pressure points 508 .

[0024] Among them Figure 4 and Figure 6 As shown, three three-way connectors 503 are located in the inner insulating tube 501 , and intervals are formed between the three-way connectors 503 and the inner insulating tube 501 .

[0025] Among them Figure 6 As shown, the three optical fibers 203 all extend beyond the insulating core 201 and are connected to an external connector 205 , which is connected to the main connector of the three-way connector 503 .

[0026] The inner insulating tube 501 is filled with rubber filler, the connection between the three-way connector 503 and the outer connector 205 is sealed by the rubber filler, and the inlet of the rubber filler is the inner make-way port 506 and the make-way groove 507 .

[0027] Among them Figure 5 As shown, the inner insulating tube 501 is composed of a group of symmetrically arranged half tubes, and the two half tubes are connected to each other by fasteners.

[0028] Among them Figure 4-5 As shown, both ends of the inner insulating tube 501 are provided with expanded neck ends 505 , and fasteners are arranged on the expanded neck ends 505 . The outer surface of the expanded neck ends 505 is flush with the outer surface of the outer twisted wire 202 .

[0029] Among them Figure 2-6 As shown, the three optical fibers 203 are distributed in a herringbone shape, the outer surface of the insulating core 201 is a cylindrical structure, and the outer twisted wire 202 is wound and arranged outside the insulating core 201.

[0030] Among them Figure 2-3 As shown, both ends of the outer pole tube 502 are integrally connected with a cone sleeve end 509, and the small-diameter end of the cone sleeve end 509 faces outward.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A railway intelligent stranded wire monitoring system, characterized in that: It includes a monitoring room (1) in the station, a plurality of intelligent stranded wires (2), a plurality of vibration monitoring hosts (3) and a plurality of temperature monitoring hosts (4); The intelligent twisted wire (2) comprises an insulating core (201) and an outer twisted wire (202); three optical fibers (203) are arranged in the insulating core (201) and are used for communication, vibration monitoring, and temperature monitoring, respectively; The length of the intelligent stranded wire (2) is set to 15 km, a plurality of the intelligent stranded wires (2) are connected in series, and a joint mechanism (5) is provided at the connection point between two adjacent intelligent stranded wires (2); A plurality of vibration monitoring hosts (3) and a plurality of temperature monitoring hosts (4) are arranged along the railway, the vibration monitoring hosts (3) are connected to an optical fiber (203) for communication and vibration monitoring, the temperature monitoring hosts (4) are connected to an optical fiber (203) for communication and vibration temperature, three intelligent twisted wires (2) are arranged between two adjacent vibration monitoring hosts (3), and a single intelligent twisted wire (2) is arranged between two adjacent temperature monitoring hosts (4); The joint mechanism (5) comprises an inner insulating tube (501), an outer pole tube (502) and three three-way connectors (503); the three three-way connectors (503) are respectively connected between three optical fibers (203) of two adjacent intelligent stranded cables (2); an extension joint (504) is connected to a branch of the three-way connector (503); and the extension joints (504) on the three three-way connectors (503) are oriented in the same direction; The insulating core (201) extends beyond the outer twisted wire (202) to form a boss (204); the inner insulating tube (501) is sleeved on the outside of the boss (204) between the two intelligent twisted wires (2); and the inner insulating tube (501) is provided with an inner clearance opening (506) that cooperates with the three extension joints (504); The outer pole tube (502) is sleeved on the inner insulating tube (501) and the outer twisted wires (202) of two adjacent intelligent twisted wires (2); the two outer twisted wires (202) are electrically connected via the outer pole tube (502); and a clearance groove (507) is provided on the side surface of the outer pole tube (502) with one end extending to the outer end surface.

2. A railway intelligent stranded wire monitoring system according to claim 1, characterized in that: A plurality of pressure points (508) are provided in the area where the outer pole tube (502) and the outer twisted wire (202) overlap, and the outer pole tube (502) is electrically connected to the outer twisted wire (202) via the pressure points (508).

3. The railway intelligent stranded wire monitoring system according to claim 1, characterized in that: The three three-way connectors (503) are located inside the inner insulating tube (501), and a gap is formed between the three-way connectors (503) and the inner insulating tube (501).

4. A railway intelligent stranded wire monitoring system according to claim 3, characterized in that: The three optical fibers (203) all extend beyond the insulating core (201) and are connected to an external connector (205), and the external connector (205) is connected to the main connector of the three-way connector (503).

5. The railway intelligent stranded wire monitoring system according to claim 1, characterized in that: The inner insulating tube (501) is filled with a rubber filler, and the connection between the three-way connector (503) and the outer joint (205) is sealed by the rubber filler. The inlet of the rubber filler is the inner clearance port (506) and the clearance groove (507).

6. The railway intelligent stranded wire monitoring system according to claim 1, characterized in that: The inner insulating tube (501) is composed of a group of symmetrically arranged half-tube bodies, and the two half-tube bodies are connected to each other via fasteners.

7. The railway intelligent stranded wire monitoring system according to claim 6, characterized in that: Both ends of the inner insulating tube (501) are provided with expanded neck ends (505), the fasteners are arranged on the expanded neck ends (505), and the outer surface of the expanded neck ends (505) is flush with the outer surface of the outer twisted wire (202).

8. The railway intelligent stranded wire monitoring system according to claim 1, characterized in that: The three optical fibers (203) are distributed in a herringbone shape, the outer surface of the insulating core (201) is a cylindrical surface structure, and the outer twisted wire (202) is wound and arranged outside the insulating core (201).

9. The railway intelligent stranded wire monitoring system according to claim 1, characterized in that: Both ends of the outer pole tube (502) are integrally connected with a cone sleeve end (509), and the small-diameter end of the cone sleeve end (509) faces outwards.

Images