CN203366825U - Intelligent on-line monitoring type railway signal cable - Google Patents

Abstract

An intelligent on-line monitoring railway signal cable belongs to the technical field of electric wires and cables. Including the cable core, the moisture-proof shielding layer wrapped longitudinally outside the cable core and the outer sheath extruded outside the moisture-proof shielding layer. The layered wire includes a set of conductors and an insulating sheath that is extruded outside the set of conductors. Features: the cable core also includes a pair of alarm wires twisted together. When wrapping the covered wire, the tape is wrapped in the wrapping tape at the same time. Each pair of alarm wires includes an alarm wire conductor and an alarm wire coating layer coated outside the alarm wire conductor, and an opening is set in the length direction of the alarm wire coating layer. The window of the coating layer of the alarm wire, the conductor of the alarm wire is in a bare state at the part corresponding to the window of the coating layer of the alarm wire. Ensure the correct effect of signal transmission and ensure the safety of railway trains.

Description

Intelligent online monitoring of railway signal cables

technical field

The utility model belongs to the technical field of electric wires and cables, in particular to an intelligent on-line monitoring railway signal cable.

Background technique

Railway signal cables are suitable for transmission of railway signals, audio signals or control circuits for automatic signal devices with a rated voltage of AC 500V or DC 1000V and below. Among them, the integrated sheath and aluminum sheath railway signal cables have certain shielding performance and are suitable for electrical applications. Sections or other areas with strong electromagnetic interference.

Belonging to the category of railway signal cables are: railway integrated sheathed signal cables, railway aluminum sheathed signal cables, railway digital signal cables, railway inner shielded digital signal cables, railway axle counting signal cables and railway transponder data transmission cables, etc. The operating environment temperature of railway signal cables is usually -45～+60℃, the laying environment temperature is usually not lower than -10℃, the long-term working temperature of cable conductors does not exceed 70℃, and the number of cores of railway signal cables can theoretically reach 61 cores, but usually around 40 cores.

Technical information about railway signal cables can be found in a large number of published Chinese patent documents, such as the authorized announcement number CN2556759Y (railway signal cable), CN202013768U (a railway signal cable), CN202384093U (railway signal system Special cables for special cables), CN202677960U (a railway signal cable), CN202677879U (a new type of high temperature resistant through ground cable) and publication number CN102800408A (an aluminum sheathed railway signal cable).

Not limited to the patented technologies listed above, although each has corresponding advantages, it does not provide corresponding enlightenment on how to prevent the railway signal cable from moisture invasion. Invention patent application publication number CN102136321A recommends "moisture-proof new type railway signal cable". In this patent, a water-blocking wrapping layer, an aluminum-plastic composite tape moisture barrier layer, a polyethylene bonding layer, and a steel tape armoring layer are sequentially arranged outside the insulated conductor. (longitudinal wrapping) and polyethylene outer sheath layer, using water-blocking tape around the cladding layer, aluminum-plastic composite tape moisture-proof layer and petroleum jelly filling layer to reflect the moisture-proof function; the authorized announcement number CN201845579U provides "water-blocking and anti-seepage type railway signal Cable", compared to CN102136231A, this patent omits the petroleum filling paste, and the cable has moisture-proof and water-blocking functions by wrapping the water-blocking tape and the moisture-proof shielding layer of the aluminum-plastic composite tape.

Undoubtedly, since railway signal cables are usually laid underground, moisture and even surface water will inevitably seep into the cable during service, that is, during use. Therefore, it is self-evident to take moisture-proof and waterproof measures in the design and manufacture of cables. positive meaning. However, whether it is a railway signal cable with a moisture-proof and water-blocking function or an ordinary cable that does not have a moisture-proof and water-blocking function, once external moisture or even the aforementioned surface water invades and enters the cable core, it cannot be known by the railway monitoring system. It was only discovered after a lot of investigations and investigations were done after the railway network signal was disturbed and malfunctioned.

It can be seen that the railway signal cable in the prior art has "congenital" defects in the structural design, so it is impossible to know the information that the cable is flooded in the first time. However, as mentioned above, if the water in the cable core cannot be disposed of in time such as replacement, it is very likely to generate an error signal, and even cause an undesirable but possible railway traffic accident.

How to make the monitoring center of the railway system (customarily called the monitoring room or control room) timely obtain the information that the railway signal cable is invaded by moisture and/or water has long been troubled by the industry, and it is expected to be solved, but in the Chinese and foreign patents and patents disclosed so far There is no corresponding technical revelation in the non-patent literature.

In view of the above-mentioned prior art, the applicant has made long-term and beneficial explorations, finally found a solution to the above-mentioned problems, and formed a technical solution to be introduced below.

Contents of the invention

The task of this utility model is to provide a method that helps the monitoring department of the railway signal network to know that the cable core has been invaded by moisture and/or water at the first time, so as to replace it in time and ensure the correct effect of signal transmission to ensure the safety of railway trains. Intelligent online monitoring of railway signal cables.

The task of the utility model is accomplished in this way. An intelligent online monitoring railway signal cable includes a cable core, a moisture-proof shielding layer longitudinally wrapped outside the cable core, and an outer sheath squeezed outside the moisture-proof shielding layer. The core includes a set of covered wires and a wrapping tape wrapped around a set of covered wires, each covered wire includes a set of conductors and an insulating sheath extruded outside a set of conductors, and the cable core also includes There is a pair of alarm wires twisted together, the pair of alarm wires are set along with the covered wire, and are wrapped in the wrapping tape at the same time when the wrapping tape wraps the covered wire, one Each of the alarm wires includes an alarm wire conductor and an alarm wire coating layer coated outside the alarm wire conductor, and an alarm wire coating window is opened in an interval state in the length direction of the alarm wire coating layer, and the alarm wire conductor is in the The part corresponding to the coating window of the alarm wire is in an exposed state.

In a specific embodiment of the present invention, the number of said group of covered wires is seven to forty.

In another specific embodiment of the present utility model, the number of said one component conductor is four, and they are twisted together.

In yet another specific embodiment of the present utility model, the conductor is a copper conductor, an aluminum conductor or a copper-clad aluminum conductor with a diameter of 0.4-0.6 mm.

In yet another specific embodiment of the present utility model, the insulating sheath is polyolefin with a thickness of 0.8-1.2mm.

In yet another specific embodiment of the present utility model, the wrapping tape is a polyester wrapping tape with a thickness of 0.03-0.06mm and a width of 30-80mm. Package rate is 3-20%.

In yet another specific embodiment of the present utility model, the moisture-proof shielding layer is a double-sided aluminum-plastic composite tape with a thickness of 0.2-0.6mm, and the overlap rate when wrapping longitudinally is 5-10%.

In a further specific embodiment of the present utility model, the outer sheath is polyethylene, polyvinyl chloride or low-smoke halogen-free flame-retardant polyolefin with a thickness of 1.6-2.6mm.

In yet another specific embodiment of the present utility model, the window of the coating layer of the alarm wire is opened on one side or the corresponding two sides of the coating layer of the alarm wire at an interval of 10-50mm, And when the coating window of the alarm wire is opened on the corresponding two sides of the length direction of the coating of the alarm wire, the positions of the coating window of the alarm wire on one side and the coating window of the alarm wire on the other side correspond to each other or stagger each other, When staggering, the staggering distance is 10-50mm, wherein: the shape of the coating window of the alarm wire is rectangular, square, circular or oval, and when it is rectangular, the length of the long side is 1-2mm, and the short The length of the side is 0.5-1㎜; when it is square, the side length is 0.5-1.2㎜; when it is circular, the diameter is 0.5-1㎜; The axial length is 1-2mm.

In yet another specific embodiment of the present utility model, the window of the coating layer of the alarm wire surrounds the circumferential direction of the coating layer of the alarm wire to form a circular cut and is along the length direction of the coating layer of the alarm wire at a distance of 10 - 50mm separation distance distribution, wherein the width of the ring cut is 1-2mm.

In the technical solution provided by the utility model, a pair of alarm wires twisted with each other is added to the cable core, so when external moisture and/or water invades the cable core, the conductor of the alarm wire can sense and feed back the signal to the railway signal network for monitoring Department, in order to replace the damaged railway signal cables in the first time, ensure the correct effect of signal transmission and ensure the safety of railway trains.

Description of drawings

Fig. 1 is the structural diagram of the embodiment of the utility model.

FIG. 2 is a schematic cross-sectional view of FIG. 1 .

Fig. 3 is a schematic diagram of a first embodiment of an alarm wire coating layer window opened on the alarm wire coating layer of the alarm wire shown in Fig. 1 .

Fig. 4 is a schematic diagram of a second embodiment of an alarm wire coating layer window opened on the alarm wire coating layer of the alarm wire shown in Fig. 1 .

Fig. 5 is a schematic diagram of a third embodiment of an alarm wire coating layer window opened on the alarm wire coating layer of the alarm wire shown in Fig. 1 .

Detailed ways

In order to enable the examiners of the patent office, especially the public, to more clearly understand the technical essence and beneficial effects of the present utility model, the applicant will describe in detail the following examples, but none of the descriptions of the examples is a description of the present utility model. Restriction of the scheme, any equivalent transformation made according to the concept of the utility model which is only in form but not in substance shall be regarded as the scope of the technical solution of the utility model.

Example 1:

See also Fig. 1, Fig. 2 and Fig. 3, have provided the cable core 1 that belongs to the structural system of the railway signal cable of the present utility model, the moisture-proof shielding layer 2 that is vertically wrapped in the cable core 1 outside the cable core 1 in the longitudinal wrapping mode and the wire and cable The usual technical means in the processing industry is to extrude the outer sheath 3 outside the moisture-proof shielding layer 2 .

The aforementioned cable core 1 includes a set of covered wires 11 and a wrapping tape 2 wrapped around the set of covered wires 11 in a wrapping (also called wrapping) manner, and each set of covered wires 11 includes a set of conductors 111 and an insulating sheath 112 extruded outside a group of conductors 111 . In this embodiment, there are seven covered wires 11 in one group, one of the seven covered wires 11 is located in the center, and the other six are arranged around the circumferential direction of the one located in the center (specifically defined by Figure 1 and Figure 2) to ensure the roundness after cable formation. The number of conductors 111 of each covered wire 11 is four, and form a star-twisted wire, that is to say, the four conductors 111 are twisted together.

In this embodiment, the conductor 111 is a copper conductor with a diameter of 0.6mm, and the insulating sheath 112 extruded outside a set of conductors 111 is made of polyolefin with a thickness of 1mm. The above-mentioned wrapping tape 12 adopts a polyester wrapping tape with a thickness of 0.06 mm and a width of 60 mm, and the lapping rate of the wrapping tape 12 during wrapping is 20%. The aforementioned moisture-proof shielding layer 2 adopts a double-sided aluminum-plastic composite tape with a thickness of 0.4 mm, and is longitudinally wrapped outside the cable core, that is, longitudinally wrapped outside the wrapping tape 12. When the moisture-proof shielding layer 2 is longitudinally wrapped, The overlap rate is controlled to be 5%, that is to say, the openings in the length direction of the moisture-proof shielding layer 2 overlap by 5mm. The aforementioned outer sheath 3 is made of low-smoke halogen-free flame-retardant polyolefin, and the thickness of the outer sheath 3 is 2.1 mm.

As the technical points of the technical solution provided by the utility model: the aforementioned cable core 1 also includes a pair of alarm wires 13 twisted together, and the pair of alarm wires 13 is accompanied by the aforementioned covered wire 11, that is, with the covered wire 11 set, and the pair of alarm wires 13 are wrapped in the wrapping tape 12 at the same time when the aforementioned wrapping tape 12 wraps the covered wire 11.

As shown in FIG. 1 and FIG. 2 , a pair of alarm wires 13 each includes an alarm wire conductor 131 and an alarm wire coating layer 132 coated or extruded outside the alarm wire conductor 131 . In this embodiment, the alarm wire 13 is preferably made of copper wire with a diameter of 0.3-0.6mm, and the coating layer 132 of the alarm wire is preferably made of polyolefin with a thickness of 0.25-0.6mm.

Please focus on Fig. 3 and in conjunction with Fig. 1, the alarm wire coating window 1321 is provided with an interval state on the alarm wire coating layer 132 of the aforementioned pair of alarm wires 13, that is to say along the length direction of the alarm wire conductor 131 On the alarm wire coating layer 132, namely, in the length direction of the alarm wire coating layer 132, an alarm wire coating layer window 1321 is provided at intervals, and the alarm wire conductor 131 is in a bare state at a position corresponding to the alarm wire coating layer window 1321. Therefore, when external moisture and/or water invade the cable core 1, the alarm wire conductor 131 can feed back the signal to the railway signal network monitoring department or the corresponding monitoring center by virtue of the alarm wire coating window 1321, so that the inspectors can detect it at the first time. Obtain the information that the railway signal cable is attacked by water, and quickly dispose of it, such as replacing the cable damaged by water, to ensure the correctness of the railway traffic signal, and to prevent traffic accidents caused by signal disorder and distortion, thereby embodying the utility model intelligent effect.

In this embodiment, the aforementioned alarm wire coating window 1321 is set on one side of the alarm wire coating layer 132 in the length direction at a distance of 10 mm, and the geometric shape of the alarm wire coating layer window 1321 is a rectangle. The length of the side is 2 mm, and the length of the short side is 1 mm.

Example 2:

Please refer to Figure 4 and combine Figure 1 and Figure 2, only change the number of covered conductors 11 constituting the cable core 1 to twenty, change the diameter of the conductor 111 to 0.4mm, and change the conductor 111 to copper-clad aluminum conductor (copper plating on the surface of aluminum); change the thickness of the insulating sheath 112 to 0.8mm; change the thickness and width of the wrapping tape 12 to 0.03mm and 80mm respectively, and change the wrapping rate of the wrapping 3%; change the thickness of the moisture-proof shielding layer 2 to 0.2mm, and change the overlapping rate of the longitudinal wrap to 10%; change the outer sheath 3 to polyethylene with a thickness of 2.6mm; The corresponding two sides in the length direction are facing each other to open the alarm wire coating window 1321, the distance between the adjacent alarm wire coating windows 1321 is changed to 50mm, and the geometric shape of the alarm wire coating window 1321 is changed Change to a square with a side length of 0.5 mm. All the other are the same as the description to embodiment 1.

Example 3:

Only change the number of covered conductors 11 constituting the cable core 1 to forty, change the diameter of the conductor 111 to 0.5mm, and change the conductor 111 to an aluminum conductor; change the thickness of the insulating sheath 112 to 1.2mm; Change the thickness and width of the wrapping tape 12 to 0.045㎜ and 30㎜ respectively, and change the overlapping rate of the wrapping tape 12 to 12%; change the thickness of the moisture-proof shielding layer 2 to 0.6㎜, and change the overlap of the longitudinal wrap change the outer sheath 3 to polyvinyl chloride with a thickness of 1.6mm; The shape of the coating layer window 1321 is an ellipse, the semi-minor axis of the ellipse is 0.5 mm long, and the semi-major axis is 1 mm long. All the other are the same as the description to embodiment 1.

Example 4:

Only change the number of covered conductors 11 constituting the cable core 1 to thirty, change the shape of the alarm conductor coating window 1321 to a circle with a diameter of 1mm, and change the shape of the alarm conductor coating window 1321 to a circle with a diameter of 1 mm, and two holes in the length direction of the alarm conductor coating 132 The sides are opened in a staggered state (not shown in the figure). All the other are the same as the description to embodiment 1.

Example 5:

Please refer to FIG. 5 and in conjunction with FIG. 1 and FIG. 2 , as shown in FIG. 5 , the alarm wire coating layer window 1321 surrounds the circumferential direction of the alarm wire coating layer 132 to form a ring cutout and along the length direction of the alarm wire coating layer 132 Distributed at intervals of 35 mm, the depth of the ring cut is equal to the thickness of the alarm wire coating layer 132 to ensure that the alarm wire conductor 131 is exposed, and the width of the ring cut is 2 mm. All the other are the same as the description to embodiment 1.

Embodiment 6:

Only change the length of the long side of the coating window 1321 of the alarm wire to 1mm, and change the length of the short side to 0.5mm, and the rest are the same as the description of embodiment 1.

Example 7

Only change the side length of the coating window 1321 of the alarm wire to 1mm, and the rest are the same as the description of the second embodiment.

Embodiment 8:

Only change the short semi-axis length and long semi-axis length of the coating window 1321 of the alarm wire to 1 mm and 2 mm respectively, and the rest are the same as the description of embodiment 3.

Embodiment 9:

Only change the diameter of the coating window 1321 of the alarm wire to 0.5 mm, and the rest are the same as the description of embodiment 4.

Example 10:

Only change the width of the ring slit that constitutes the coating window 1321 of the alarm wire to 1mm, and the rest are the same as the description of embodiment 5.

Claims (10)

1. a kind of intelligent online monitoring railway signal cable, comprise cable core (1), the vertical outer moistureproof shield layer (2) of cable core (1) and the crowded outer oversheath (3) of moistureproof shield layer (2) that overlays on of wrapping in, described cable core (1) comprises one group of coating wire (11) and wrapped twining package tape (12) outside one group of coating wire (11), each coating layer line (11) comprises one group of conductor (111) and squeezes the insulation sheath (112) overlayed on outside one group of conductor (111), it is characterized in that described cable core (1) also includes a pair of warning wire twisted together each other (13), this a pair of warning wire (13) is followed in described coating wire (11) and is arranged, and when described twining package tape (12) is wrapped to coating wire (11) simultaneously by wrapped in twining package tape (12), a pair of warning wire (13) respectively comprises warning wire conductor (131) and is overlayed on the outer warning wire coating (132) of warning wire conductor (131), and the length direction at described warning wire coating (132) offers warning wire coating window (1321) with the interval state, described warning wire conductor (131) at the position corresponding to warning wire coating window (1321) in revealing naked state.

2. intelligent online monitoring railway signal cable according to claim 1, the quantity that it is characterized in that described one group of coating wire (11) is seven to 40.

3. intelligent online monitoring railway signal cable according to claim 1, is characterized in that described one quantity that forms conductor (111) is four, and mutually twist together.

4. according to the described intelligent online monitoring of claim 1 or 3 railway signal cable, it is characterized in that described conductor (111) is for copper conductor, aluminium conductor or the copper clad aluminum conductor of diameter 0.4-0.6 ㎜.

5. intelligent online monitoring railway signal cable according to claim 1, is characterized in that described insulation sheath (112) is for the polyolefin of thickness 0.8-1.2 ㎜.

6. railway signal cable according to claim 1, is characterized in that described twining package tape (12) is the polyester twining package tape that thickness 0.03-0.06 ㎜ and width are 30-80 ㎜, and the packet stack rate of this twining package tape (12) when wrapped is 3-20%.

7. intelligent online monitoring railway signal cable according to claim 1, it is characterized in that described moistureproof shield layer (2) is for the double-sided aluminum plastic composite band of thickness 0.2-0.6 ㎜, and the Duplication when vertical bag is 5-10%.

8. intelligent online monitoring railway signal cable according to claim 1, is characterized in that described oversheath (3) is for polyethylene, polyvinyl chloride or the low smoke halogen-free flame-retardant polyolefin of thickness 1.6-2.6 ㎜.

9. intelligent online monitoring railway signal cable according to claim 1, it is characterized in that described warning wire coating window (1321) is opened in a side or the corresponding both sides of the length direction of described warning wire coating (132) with the spacing distance of 10-50 ㎜, and when warning wire coating window (1321) is opened in the corresponding both sides of length direction of warning wire coating (132), the warning wire coating window (1321) that is positioned at a side corresponds to each other or mutually staggers with the position that is positioned at the warning wire coating window (1321) of opposite side, the distance staggered while staggering is 10-50 ㎜, wherein: the shape of described warning wire coating window (1321) is rectangle, square, circular or oval, and when rectangle, the length on long limit is 1-2 ㎜, the length of minor face is 0.5-1 ㎜, when square, the length of side is 0.5-1.2 ㎜, when circle, diameter is 0.5-1 ㎜, when ellipse, semi-minor axis is long is 0.5-1 ㎜, and major semiaxis is long is 1-2 ㎜.

10. intelligent online monitoring railway signal cable according to claim 1, with the state that forms rings cut and along the length direction of warning wire coating (132), the spacing distance with 10-50 ㎜ distributes around the circumferencial direction of described warning wire coating (132) to it is characterized in that described warning wire coating window (1321), wherein, the width of described rings cut is 1-2 ㎜.

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