CN217649330U - Steel rail potential limiting device net hanging test operation system - Google Patents
Steel rail potential limiting device net hanging test operation system Download PDFInfo
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- CN217649330U CN217649330U CN202221071034.6U CN202221071034U CN217649330U CN 217649330 U CN217649330 U CN 217649330U CN 202221071034 U CN202221071034 U CN 202221071034U CN 217649330 U CN217649330 U CN 217649330U
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- rail potential
- steel rail
- potential limiting
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Abstract
The utility model provides a net hanging test operation system of a steel rail potential limiting device, the first steel rail potential limiting device and the second steel rail potential limiting device in the utility model are installed near to facilitate the inspection and comparison in the operation process; the second steel rail potential limiting device is connected with the first steel rail potential limiting device in parallel through a cable, so that the phenomenon that the operation of rail transit is influenced due to faults caused by the fact that the cable on the first steel rail potential limiting device is disassembled and assembled is avoided; the grounding bus of the second steel rail potential limiting device is connected to a strong current grounding copper bar M1 of a cable interlayer of the traction and mixing device through a cable, so that the grounding connection of the second steel rail potential limiting device is realized; the negative pole of the second steel rail potential limiting device is connected to a preformed hole of a rail potential loop in the negative pole cabinet through a cable, so that the purpose of one use and one standby is really realized, and the problem that the running safety of a direct current system is influenced due to the failure of a new product is solved.
Description
Technical Field
The utility model belongs to the technical field of the track traffic, concretely relates to rail potential limiting device hangs net test run system.
Background
The rail potential limiting device is arranged in a rail transit traction voltage reduction hybrid substation and is connected between the negative electrode of a traction power supply system and a grounding terminal. When the potential of the steel rail is higher than a set value, the steel rail is grounded so as to limit the potential difference between the steel rail and the ground and ensure the personal safety of passengers and workers. The steel rail potential limiting device comprises a short-circuit device (a contactor loop and a thyristor loop), a measurement and operation loop, a signal interface terminal, a protection device, an anti-condensation heater, a state display instrument and the like.
The network-on test operation refers to the fact that a new product is installed in a rail transit direct-current power distribution system, and the performance and reliability of the product are verified through test operation.
The inventor finds that in the net hanging test operation, the common method is to replace the original product with a new product to operate, so as to achieve the purpose of net hanging; therefore, once a new product fails, the running safety of the direct current system is affected, and personal accidents are caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a steel rail potential limiting device net hanging test operation system, aiming at the safety problem that new performance of net hanging operation can cause the operation of a direct current distribution system, a second steel rail potential limiting device and a first steel rail potential limiting device which are in net hanging test operation are connected in parallel to operate, and one purpose and one spare purpose are realized; even if the second steel rail potential limiting device in the net hanging test operation fails, the first steel rail potential limiting device always operates according to the original fixed value, and the purpose of protection is achieved.
According to some embodiments, the utility model provides a scheme provides a rail potential limiting device hangs net test run system, adopts following technical scheme:
a steel rail potential limiting device net hanging test operation system comprises a first steel rail potential limiting device and a second steel rail potential limiting device which are connected in parallel;
the grounding buses of the first steel rail potential limiting device and the second steel rail potential limiting device are connected to a strong current grounding copper bar M1 of a cable interlayer of the towing and mixing plant;
and the cathodes of the first steel rail potential limiting device and the second steel rail potential limiting device are respectively connected with a preformed hole of a rail potential loop in the cathode cabinet.
As a further technical definition, the first rail potential limiting device and the second rail potential limiting device each comprise a contactor, a thyristor and a bus.
Furthermore, a first group of thyristors is arranged in the first steel rail potential limiting device, and a second group of thyristors is arranged in the second steel rail potential limiting device; the first group of thyristors and the second group of thyristors are connected in opposite directions.
Furthermore, a first contactor is arranged in the first steel rail potential limiting device, and a second contactor is adopted in the second steel rail potential limiting device; the first contactor and the second contactor both adopt normally closed direct current contactors.
Further, the normally closed dc contactor is a single-phase bipolar normally closed dc contactor.
Further, the strong electricity grounding copper bar M1 of the cable interlayer of the pulling and mixing device is at least provided with two newly added cable wiring holes.
Furthermore, the grounding bus of the second steel rail potential limiting device is connected with the newly added cable wiring hole.
Furthermore, the first group of thyristors are connected with the existing cable wiring holes of the strong current grounding copper bar M1 of the cable interlayer of the towing and mixing device after being connected through the first contactor.
Furthermore, the second group of thyristors is connected with the newly added cable wiring hole after being connected through the second contactor.
Further, the strong electricity grounding copper bar M1 of the cable interlayer of the mixing station adopts a TMY-80 x 8 copper bus.
Compared with the prior art, the beneficial effects of the utility model are that:
the first steel rail potential limiting device and the second steel rail potential limiting device in the utility model are installed near to facilitate the inspection and comparison in the operation process; the second steel rail potential limiting device is connected with the first steel rail potential limiting device in parallel through a cable, so that the phenomenon that the operation of rail transit is influenced due to faults caused by the fact that the cable on the first steel rail potential limiting device is disassembled and assembled is avoided; the grounding bus of the second steel rail potential limiting device is connected to a strong current grounding copper bar M1 of a cable interlayer of the traction and mixing device through a cable, so that the grounding connection of the second steel rail potential limiting device is realized; the negative pole of the second steel rail potential limiting device is connected to a preformed hole of a rail potential loop in the negative pole cabinet through a cable, so that the purpose of one use and one standby is really realized, and the problem that the running safety of a direct current system is influenced due to the failure of a new product is solved.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural diagram of a steel rail potential limiting device net hanging test operation system in an embodiment of the present invention;
fig. 2 is a primary electrical schematic diagram of a first rail potential limiting device in an embodiment of the present invention;
fig. 3 is a primary electrical schematic diagram of a second rail potential limiting device in an embodiment of the present invention;
fig. 4 is a structural diagram of a new strong current grounding copper bar M1 arranged on the cable interlayer of the mixing and pulling station in the embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The embodiment provides a steel rail potential limiting device net hanging test operation system;
a steel rail potential limiting device net hanging test operation system as shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a first steel rail potential limiting device and a second steel rail potential limiting device which are connected in parallel; in practical application, the first rail potential limiting device and the second rail potential limiting device are operated in parallel.
In other embodiments, the overvoltage set value of the second steel rail potential limiting device can be smaller than the overvoltage set value of the first steel rail potential limiting device, so that the second steel rail potential limiting device is firstly put into operation to achieve the purpose of detecting the performance of a net hanging product, and further, the first steel rail potential limiting device is ensured to operate according to the original overvoltage set value when the second steel rail potential limiting device breaks down, the purpose of protection is achieved, and personal injury accidents caused by overvoltage are avoided; the overvoltage set value of the rail potential limiting device is set to be the prior art and is not described in detail here.
The first steel rail potential limiting device is installed and operated on site, and the second steel rail potential limiting device is a net hanging operation product; the electric main loops of the first steel rail potential limiting device and the second steel rail potential limiting device respectively comprise a thyristor, a contactor, a current divider and a copper bus; the first rail potential limiting device and the second rail potential limiting device may be obtained by an existing product, or may be provided as follows.
A first group of thyristors are arranged in the first steel rail potential limiting device, and a second group of thyristors are arranged in the second steel rail potential limiting device; the first group of thyristors and the second group of thyristors are connected in opposite directions, and forward and reverse voltages are conducted.
In the present embodiment, the model number of the first group of thyristors is KPC5200,500V; the second group of thyristors has the model number MKP50 KA-22X 2.
A first contactor is arranged in the first steel rail potential limiting device, and a second contactor is arranged in the second steel rail potential limiting device; the first contactor and the second contactor both adopt normally closed direct current contactors.
In this embodiment, the first contactor has a model number of N0001250P, specification 1250A, single-phase double-pole; the model of the second contactor is HOMA-G1400/HAT, the specification is 1400A, and the second contactor is a single-phase double-pole contactor; the shunt model of the first steel rail potential limiting device is a weigel model, and the specification is 1KV/60mV; the shunt model of the second steel rail potential limiting device is FL-2, and the specification is 1KV/60mV.
The thyristors of the first steel rail potential limiting device and the second steel rail potential limiting device are connected with the upper ports of the direct current contactors and then are respectively connected with a rail potential loop in the negative electrode cabinet; after the thyristor of the first steel rail potential limiting device is connected with the lower port of the direct current contactor, the thyristor is in compression joint with a cable hole of a strong current grounding copper bar M1 of a cable interlayer of the traction and mixing device; and after the thyristor of the second steel rail potential limiting device is connected with the lower port of the direct current contactor, the thyristor is in compression joint with a newly added cable hole of a strong current grounding copper bar M1 of a cable interlayer of the traction and mixing device.
In this embodiment, the first rail potential limiting device may have an outer dimension (length, width, height) of 600 x 800 x 2260; the second rail potential limiting device may have an outer dimension (length, width, height) of 700, 600, 1800.
As shown in fig. 3, the strong electricity grounding copper bar M1 of the interlayer of the cable of the mixing plant is a newly added grounding device; the strong electricity grounding copper bar M1 of the cable interlayer of the pulling and mixing device is a TMY-80 x 8 copper bus; 10-phi 17 of a strong current grounding copper bar M1 of the cable interlayer of the pulling and mixing device is an existing cable wiring hole; the 10-phi 17 holes of the strong current grounding copper bar M1 of the cable interlayer of the pulling and mixing station can be pressed and connected by 185mm 2 、240mm 2 A cable; 2-phi 17 of a strong-current grounding copper bar M1 of the cable interlayer of the pulling and mixing plant is a newly-added cable wiring hole; the 2-phi 17 holes of the strong current grounding copper bar M1 of the cable interlayer of the traction and mixing station can be newly pressed with 240mm 2 A cable; 240mm newly added on 2-phi 17 holes of strong-current grounding copper bar of cable interlayer of traction mixing plant 2 The cable is crimped by adopting a DT-240 cold-pressed end; the newly added 240mm2 cable on the 2-phi 17 holes of the strong current grounding copper bar (M1) of the cable interlayer of the drawing and mixing device is pressed and connected by adopting a DT-240 cold pressing end; then fastened by M16X 25 bolts, and added with 240mm 2 The cable is connected to the 2-phi 17 hole of the strong-current grounding copper bar M1 in a pressing mode.
The first steel rail potential limiting device and the second steel rail potential limiting device in the embodiment are installed nearby, so that inspection and comparison in the operation process are facilitated; the second steel rail potential limiting device is connected with the first steel rail potential limiting device in parallel through a cable, so that the phenomenon that the operation of rail transit is influenced due to faults caused by the fact that the cable on the first steel rail potential limiting device is disassembled and assembled is avoided; the grounding bus of the second steel rail potential limiting device is connected with a strong-current grounding copper bar M1 of a cable interlayer of the traction mixing device through a cable, so that the grounding connection of the second steel rail potential limiting device is realized; the cathode of the second steel rail potential limiting device is connected to a preformed hole of a rail potential loop in the cathode cabinet through a cable, so that one use and one standby are really realized; the overvoltage set value of the second steel rail potential limiting device is smaller than that of the first steel rail potential limiting device, so that the second steel rail potential limiting device is put into operation firstly, the performance detection of a net hanging product is realized, the first steel rail potential limiting device is ensured to operate according to the original overvoltage set value when the second steel rail potential limiting device breaks down, the protection purpose is realized, and personal injury accidents caused by overvoltage are avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A steel rail potential limiting device net hanging test operation system is characterized by comprising a first steel rail potential limiting device and a second steel rail potential limiting device which are connected in parallel;
the grounding buses of the first steel rail potential limiting device and the second steel rail potential limiting device are connected to a strong current grounding copper bar M1 of a cable interlayer of the towing and mixing station;
and the cathodes of the first steel rail potential limiting device and the second steel rail potential limiting device are respectively connected with a preformed hole of a rail potential loop in the cathode cabinet.
2. The steel rail potential limiting device net hanging test running system according to claim 1, wherein the first steel rail potential limiting device and the second steel rail potential limiting device both comprise a contactor, a thyristor and a bus.
3. The steel rail potential limiting device net hanging test running system according to claim 2, wherein a first group of thyristors are arranged in the first steel rail potential limiting device, and a second group of thyristors are arranged in the second steel rail potential limiting device; the first group of thyristors and the second group of thyristors are connected in opposite directions.
4. The steel rail potential limiting device net hanging test running system according to claim 3, wherein a first contactor is arranged in the first steel rail potential limiting device, and a second contactor is adopted in the second steel rail potential limiting device; the first contactor and the second contactor both adopt normally closed direct current contactors.
5. A steel rail potential limiting device net hanging test operation system as claimed in claim 4, wherein the normally closed DC contactor is a single-phase bipolar normally closed DC contactor.
6. A steel rail potential limiting device net hanging test operation system as claimed in claim 5, wherein the strong electricity grounding copper bar M1 of the cable interlayer of the mixing plant is provided with at least two newly added cable wiring holes.
7. A rail potential limiting device screening commissioning system as recited in claim 6 wherein said second rail potential limiting device ground strap is connected to said added cable connection hole.
8. A steel rail potential limiting device net hanging test operation system as claimed in claim 6, wherein the first group of thyristors is connected with existing cable wiring holes of strong electric grounding copper bars M1 of the cable interlayer of the mixing plant through the first contactor.
9. A rail potential limiting device screening commissioning system as recited in claim 6 wherein said second set of thyristors is connected to said additional cable connection port through said second contactor.
10. A rail potential limiting device screen test run system according to claim 1, wherein the strong earthed copper busbar M1 of the cable interlayer of the mixing plant is a TMY-80 x 8 copper busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221071034.6U CN217649330U (en) | 2022-05-06 | 2022-05-06 | Steel rail potential limiting device net hanging test operation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221071034.6U CN217649330U (en) | 2022-05-06 | 2022-05-06 | Steel rail potential limiting device net hanging test operation system |
Publications (1)
| Publication Number | Publication Date |
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| CN217649330U true CN217649330U (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221071034.6U Active CN217649330U (en) | 2022-05-06 | 2022-05-06 | Steel rail potential limiting device net hanging test operation system |
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| CN (1) | CN217649330U (en) |
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2022
- 2022-05-06 CN CN202221071034.6U patent/CN217649330U/en active Active
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