CN214898908U - Signal equipment grounding system based on weak current flat steel direct grounding - Google Patents
Signal equipment grounding system based on weak current flat steel direct grounding Download PDFInfo
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- CN214898908U CN214898908U CN202120928626.4U CN202120928626U CN214898908U CN 214898908 U CN214898908 U CN 214898908U CN 202120928626 U CN202120928626 U CN 202120928626U CN 214898908 U CN214898908 U CN 214898908U
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Abstract
The utility model relates to a signal equipment ground system based on weak current band steel direct ground connection, include: signal equipment, signal cables, core wire lightning protection grounding, cable end grounding and station comprehensive grounding network. The signal cable is formed by connecting more than two sections of signal cables in series, and each section of signal cable comprises a core wire and a shielding layer; one end of a core wire of a first section of signal cable is connected with the signal equipment and the core wire lightning protection ground, the shell of the signal equipment and the core wire lightning protection ground are connected with the station comprehensive grounding network, the other end of the core wire of the first section of signal cable is connected with the core wires of other sections of signal cables through the follow current box in sequence, and the core wire of the last section of signal cable is connected with the junction box; one end of a shielding layer of the first section of signal cable is grounded through a cable forming end and is connected with a station comprehensive earth network; the shielding layers of other signal cables are connected with the weak current flat steel; the weak current flat steel is connected with the station comprehensive earth screen through a weak current flat steel connecting wire. The utility model discloses can wide application in track traffic technical field.
Description
Technical Field
The utility model relates to a signal equipment ground system based on direct ground connection of light current band steel belongs to track traffic technical field.
Background
When in use, the electric equipment on the subway can cause electric leakage between the live wire or the part and the shell due to insulation aging, abrasion, water immersion, moisture and the like; or serious heating is caused by overload of equipment, and insulation is burnt to cause electric leakage; and electric leakage caused by environmental gas pollution and dust deposition is possible, so that various electric equipment on the subway needs to be protected and grounded.
However, as shown in fig. 1, in the conventional subway signal grounding system, when signal cables in various signal devices are connected to a subway return system, a shielding layer of the signal cable is connected to a weak current flat steel, and then grounded through the weak current flat steel. Because the induced current is in direct proportion to the length of the signal cable, under the condition that the weak current flat steel is not grounded well, the induced voltage generated on the weak current flat steel is far higher than the voltage on the shielding layer of the signal cable, so that the induced voltage on the signal cable is possibly higher without a diversion function, and the induced voltage pulse on the signal cable is higher. Meanwhile, in the existing design, the steel rail is grounded with the comprehensive ground net at the station, the strong electric flat steel is connected with the comprehensive ground net at the station during actual construction, and the steel rail does not see a connection point with the comprehensive ground net at the station.
Disclosure of Invention
To the above problem, the utility model aims at providing a signal equipment ground system based on weak current band steel direct ground connection, this system can eliminate or reduce the influence of forceful electric power to weak electric system to reduce the interference source, reduce the meter axle and receive the interference and occupy.
In order to achieve the purpose, the utility model adopts the following technical proposal: a signal equipment grounding system based on weak current flat steel grounding comprises: signal equipment, signal cables, core wire lightning protection grounding, cable end grounding, weak current flat steel and station comprehensive ground nets; the signal cable is formed by connecting more than two sections of cables in series, and each section of cable comprises a core wire and a shielding layer which is coated outside the core wire and used for shielding the signal cable; one end of a core wire of the first section of cable is respectively connected with the indoor signal equipment and the core wire lightning protection ground, and a shell of the signal equipment and the core wire lightning protection ground are connected with the station comprehensive grounding network through a signal room grounding collection row; the other end of the core wire of the first section of cable is connected with the core wires of other sections of cables in series through the follow current box, and the other end of the core wire of the last section of cable is connected with the junction box; one end of the shielding layer of the first section of cable is connected with the station comprehensive earth mat through the cable end-to-end grounding and signal room grounding collection row; and the shielding layers of other sections of cables are connected with the weak current flat steel, and the weak current flat steel is connected with the station comprehensive earth screen through a weak current flat steel connecting wire.
Furthermore, the weak current flat steel is connected with the area ground nets through weak current flat steel connecting wires.
Further, the interval ground net comprises a wind well ground net and a cross passage ground net.
Furthermore, each section of cable is cut off once every 1000m, the core wires of each section of cable are continuously connected through a follow current box, and the shielding layer of each section of cable is connected with the weak current flat steel.
Further, the shielding layer of each section of cable comprises an insulating sheath layer, a steel belt shielding layer and an aluminum sheath shielding layer which are sequentially arranged from outside to inside, the insulating sheath layer is stripped to expose the steel belt shielding layer, and the steel belt shielding layer leads out a grounding terminal and is connected with the weak current flat steel.
Further, the signal device is an axle counting device, a signal machine or an active transponder.
Further, this system still includes forceful electric power band steel and rail, forceful electric power band steel pass through the forceful electric power band steel earth connection that the interval set up with the rail links to each other, the rail through the interval set up inhale the line and the earth connection respectively with the return wire in the traction system and the interval earth mat links to each other, forceful electric power band steel with the station is synthesized the earth mat and is linked to each other.
The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses well light current band steel and rail disconnection keep the mode of the current cable shield layer light current band steel, and light current band steel only is connected to the station and synthesizes on the ground net, with light current and strong current separately ground connection, to signal cable shielding layer induction charge earial drainage, and then eliminate or reduce the influence of forceful electric power to the light current system to reduce the interference source, reduce the meter axle and receive the interference and occupy. Therefore, the utility model discloses can the wide application in track traffic technical field.
Drawings
FIG. 1 is a schematic diagram of a grounding model of a conventional axle counting device when the axle counting device is connected to a grounding reflux system;
fig. 2 is a schematic structural diagram of an axle counting device grounding system based on weak current flat steel direct grounding provided by the embodiment of the invention;
the reference numbers in the figures are as follows:
1. a catenary; 2. weak current flat steel; 3. a steel rail; 4. strong electric flat steel; 5. a return line; 6. sucking the thread; 7. air shaft, cross passage ground net; 8. a station comprehensive ground net; 9. a signal chamber ground collection row; 10. a strong electric flat steel grounding wire; 11. an axle counting host; 111. an axle counting amplifying plate; 112. a meter axle housing; 12. the axle counting core wire is grounded in lightning protection; 13. the end of the axle counting cable is grounded; 14. an axle counting signal cable; 141. a core wire of the axle counting signal cable; 142. the axle counting signal cable shielding layer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "assembled", "disposed" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2, the utility model provides a pair of signal equipment grounding system based on weak current band steel direct ground connection, it includes: signal equipment, signal cables, core wire lightning protection grounding, cable end grounding and station comprehensive grounding network. The signal cable is formed by connecting more than two sections of signal cables in series, and each section of signal cable comprises a core wire and a shielding layer which is coated outside the core wire and used for shielding the signal cable; one end of a core wire of a first section of signal cable is respectively connected with indoor signal equipment and core wire lightning protection grounding, a shell of the signal equipment and the core wire lightning protection grounding are connected with a station comprehensive grounding network through a signal room grounding collection row, the other end of the core wire of the first section of signal cable is connected with the core wires of other sections of signal cables in series through a follow current box, and the other end of the core wire of the last section of signal cable is connected with a junction box; one end of a shielding layer of the first section of signal cable is connected with a station comprehensive earth screen through a cable end-to-end grounding and signal room grounding collection row; the shielding layers of other signal cables are connected with the weak current flat steel; the weak current flat steel is directly connected with the station comprehensive earth screen through a weak current flat steel connecting wire.
Furthermore, the weak current flat steel can also be directly connected with the area ground nets through weak current flat steel connecting wires.
Further, the interval ground net comprises an air shaft ground net and a cross passage ground net.
Furthermore, each section of signal cable is cut off once at an interval of 1000m, the core wires of each cut section of signal cable are continuously connected through the follow current box, and the shielding layer of each section of signal cable is connected with the weak current flat steel through the grounding layer of the shielding layer.
Furthermore, the shielding layer of each section of signal cable comprises an insulating sheath layer, a steel belt shielding layer and an aluminum sheath shielding layer which are sequentially arranged from outside to inside, the insulating sheath layer is stripped to expose the steel belt shielding layer, and the steel belt shielding layer leads out a grounding terminal to be connected with the weak current flat steel.
Further, the signaling device is an axle counting device, a signaling device or an active transponder.
Further, the system also comprises a strong current flat steel and a steel rail, wherein the strong current flat steel is connected with the steel rail through a strong current flat steel grounding wire arranged at intervals, the steel rail is respectively connected with a return wire and an interval ground net in the traction system through an upper wire and a grounding wire arranged at intervals, and the strong current flat steel is connected with the station comprehensive ground net.
Example 1
As shown in fig. 2, the present embodiment provides an axle counting device grounding system based on weak current flat steel direct grounding, which includes: the system comprises an axle counting host 12, an axle counting signal cable 15, an axle counting core wire lightning protection grounding 13, an axle counting cable end grounding 14 and a station comprehensive grounding network 8. The axle counting signal cable 15 is formed by connecting more than two sections of axle counting signal cables in series, and each section of axle counting signal cable comprises a core wire 151 and a shielding layer 152 which is coated on the core wire 151 and used for shielding the axle counting signal cable 15; one end of a core wire 151 of a first section of axle counting signal cable 15 is respectively connected with an amplifying plate 121 and an axle counting core wire lightning protection earth 13 which are arranged in an indoor axle counting host 12, the shell 122 of the axle counting host 12 and the other end of the axle counting core wire lightning protection earth 13 are connected with a station comprehensive earth grid 8 through a signal room earth collection row 9, the other end of the core wire 151 of the first section of axle counting signal cable 15 is sequentially connected with core wires of other sections of axle counting signal cables through a follow current box, and the core wire of the last section of signal cable is connected with a junction box; one end of a shielding layer 152 of the first section of axle counting signal cable 15 is connected with an axle counting cable end-to-end grounding 14 arranged indoors, and the axle counting cable end-to-end grounding 14 is connected with a station comprehensive grounding network 8 through a signal room grounding collection row 9; the shielding layers of other sections of axle-counting signal cables 15 are connected with the weak current flat steel 2 of the weak current system through the grounding bolt of the follow-up current box, and the weak current flat steel is connected with the station comprehensive earth screen 8.
The grounding system also comprises a strong electric flat steel 4 of a strong electric system and a steel rail 3. The strong electric flat steel 4 is connected with the steel rail 3 through a strong electric flat steel grounding wire 10 arranged at intervals, the steel rail 3 is respectively connected with the return wire 5 and the inter-zone ground nets 7 through an upper suction wire 6 and a grounding wire 16 arranged at intervals, and the strong electric flat steel 4 is connected with the station comprehensive ground net 8. The return line 5, the steel rail 3, the weak current flat steel 2, the strong current flat steel 4, the line suction 6, the interval ground net 7 and the station comprehensive ground net 8 form one pole of a capacitor, and the contact net 1 forms the other pole of the capacitor.
The above-mentioned embodiments are only used for explaining the present invention, wherein the structure, connection mode, etc. of each component can be changed, all the equivalent transformation and improvement performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.
Claims (7)
1. A signal equipment grounding system based on weak current flat steel direct grounding is characterized by comprising:
signal equipment, signal cables, core wire lightning protection grounding, cable end grounding, weak current flat steel and station comprehensive ground nets;
the signal cable is formed by connecting more than two sections of cables in series, and each section of cable comprises a core wire and a shielding layer which is coated outside the core wire and used for shielding the signal cable;
one end of a core wire of the first section of cable is respectively connected with the indoor signal equipment and the core wire lightning protection ground, and a shell of the signal equipment and the core wire lightning protection ground are connected with the station comprehensive grounding network through a signal room grounding collection row;
the other end of the core wire of the first section of cable is connected with the core wires of other sections of cables in series through the follow current box, and the other end of the core wire of the last section of cable is connected with the junction box;
one end of the shielding layer of the first section of cable is connected with the station comprehensive earth mat through the cable end-to-end grounding and signal room grounding collection row;
and the shielding layers of other sections of cables are connected with the weak current flat steel, and the weak current flat steel is connected with the station comprehensive earth screen through a weak current flat steel connecting wire.
2. A signal equipment grounding system based on a weak electrical flat bar direct ground connection as claimed in claim 1, characterized in that: and the weak current flat steel is connected with the area ground nets through weak current flat steel connecting wires.
3. A signal equipment grounding system based on a weak electrical flat bar direct ground connection as claimed in claim 2, characterized in that: the interval ground net comprises an air shaft ground net and a cross passage ground net.
4. A signal equipment grounding system based on a weak electrical flat bar direct ground connection as claimed in claim 1, characterized in that: each section of cable is cut off once every 1000m, the core wires of each section of cable are continuously connected through a follow current box, and the shielding layer of each section of cable is connected with the weak current flat steel.
5. A signal equipment grounding system based on a weak electrical flat bar direct ground connection as claimed in claim 2, characterized in that: the shielding layer of each section of cable comprises an insulating sheath layer, a steel belt shielding layer and an aluminum sheath shielding layer which are sequentially arranged from outside to inside, the insulating sheath layer is stripped to expose the steel belt shielding layer, and the steel belt shielding layer is led out to lead out a grounding terminal and is connected with the weak current flat steel.
6. A signal equipment grounding system based on a weak electrical flat bar direct ground connection as claimed in claim 1, characterized in that: the signal device is an axle counting device, a signal machine or an active transponder.
7. A signal equipment grounding system based on a weak electrical flat bar direct ground connection as claimed in claim 2, characterized in that: the system further comprises a strong current flat steel and a steel rail, wherein the strong current flat steel is connected with the steel rail through a strong current flat steel grounding wire arranged at intervals, the steel rail is respectively connected with a return wire in the traction system and the interval ground net through an upper wire sucking and grounding wire arranged at intervals, and the strong current flat steel is connected with the station comprehensive ground net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120928626.4U CN214898908U (en) | 2021-04-30 | 2021-04-30 | Signal equipment grounding system based on weak current flat steel direct grounding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120928626.4U CN214898908U (en) | 2021-04-30 | 2021-04-30 | Signal equipment grounding system based on weak current flat steel direct grounding |
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| Publication Number | Publication Date |
|---|---|
| CN214898908U true CN214898908U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120928626.4U Active CN214898908U (en) | 2021-04-30 | 2021-04-30 | Signal equipment grounding system based on weak current flat steel direct grounding |
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| Country | Link |
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| CN (1) | CN214898908U (en) |
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2021
- 2021-04-30 CN CN202120928626.4U patent/CN214898908U/en active Active
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