CN208461462U - A kind of direct-current traction power supply equipment of tape frame protective device - Google Patents
A kind of direct-current traction power supply equipment of tape frame protective device Download PDFInfo
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- CN208461462U CN208461462U CN201821205048.6U CN201821205048U CN208461462U CN 208461462 U CN208461462 U CN 208461462U CN 201821205048 U CN201821205048 U CN 201821205048U CN 208461462 U CN208461462 U CN 208461462U
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Abstract
The utility model discloses a kind of direct-current traction power supply equipment of tape frame protective device; including frame and frame protection device; the frame is installed on insulation assembly; the frame is connected by frame protection device with the earth; once DC power supply unit and secondary AC power supply unit, the secondary AC power supply unit are connected by an electrical isolation component with the external accessory power supply that exchanges for setting in the frame.The direct-current traction power supply equipment of the tape frame protective device of the utility model has many advantages, such as that structure is simple, safe and reliable.
Description
Technical field
The utility model relates generally to technical field of rail traffic, and the DC traction for refering in particular to a kind of tape frame protective device supplies
Electric equipment.
Background technique
Direct-current traction power supply equipment is designed as single-point grounding system, and to DC suppling equipment using being insulated, rail is logical
It crosses felt pad and the earth insulate, to reduce the leakage of stray electrical current.As shown in Figure 1, the frame of DC suppling equipment is by a set of
Low ESR frame leakage protection device and the earth are connected, when DC suppling equipment inner part generates leakage or insulation damages to cabinet body
When flashover, leakage current is not enough to start other direct current protecting device actions, in order to protect the person and DC suppling equipment
Direct current frame protection device is arranged in safety, once frame protection device detects that leakage current or contact voltage are greater than the set value
When, frame protection device acts rapidly.But the secondary device in Partial DC power supply unit needs to access and exchanges secondary auxiliary
Power supply power supply will usually exchange in secondary power system in order to ensure the safe handling of alternating-current system and secondary device
Property point or secondary device outer case ground connection, and secondary device outer case is generally directly installed on device framework or by be grounded and set
Standby frame connects.Exchange secondary power system ground connection or secondary device outer case ground connection, which will be grounded to exist with frame protection, to be conflicted, will
Make DC suppling equipment frame by exchange secondary power system grounding path, is connect around Low ESR frame protection device and the earth
It is logical, so that frame protection be made to fail.
Utility model content
The technical problems to be solved in the utility model is that for technical problem of the existing technology, this is practical new
Type provides a kind of direct-current traction power supply equipment of simple, the safe and reliable tape frame protective device of structure.
In order to solve the above technical problems, the utility model proposes technical solution are as follows:
A kind of direct-current traction power supply equipment of tape frame protective device, including frame and frame protection device, the frame
It is installed on insulation assembly, the frame is connected by frame protection device with the earth, and once direct current is arranged in the frame
Power supply unit and secondary AC power supply unit, the secondary AC power supply unit are exchanged by an electrical isolation component with external
Accessory power supply is connected.
As a further improvement of the above technical scheme:
The electrical isolation component insulation is installed on the inside of the frame.
The lower portion is provided with the more insulating mounting beams being horizontally mounted, and the electrical isolation component is securedly mounted to
On the insulating mounting beam.
The frame protection device includes frame currents protection detecting element, and the frame currents protect the one of detecting element
It terminates on frame, the other end is connected with grounded screen single-point in electric substation；When frame currents protection detecting element detects leakage
When electric current is greater than the set value, all power supplies being connected with a DC power supply unit are disconnected.
The frame protection device includes frame voltage protection detecting element, and the frame voltage protects the one of detecting element
It terminates on frame, the other end is connected with the cathode of a DC power supply unit primary circuit；When frame voltage protects detection member
When part detects that contact voltage is greater than the set value, all power supplies being connected with a DC power supply unit are disconnected.
The electrical isolation component is isolating transformer.
The iron core of the isolating transformer is connected with the external ground line for exchanging accessory power supply.
The power of the isolating transformer and the power of secondary AC power supply unit match.
It is connected after the secondary earthing bar that the secondary AC power supply unit ground connection is uniformly connected in frame with frame.
The insulation assembly includes felt pad.
Compared with the prior art, the advantages of the utility model are:
The direct-current traction power supply equipment of the tape frame protective device of the utility model, by former secondary AC power supply unit
Input terminal be arranged an electrical isolation component (such as isolating transformer), make secondary AC power supply unit with outside exchange auxiliary
Electrical isolation between power supply solves exchange auxiliary power ground, secondary AC power supply unit ground connection connects with frame protection device
The conflict on ground avoids frame protection failure of apparatus, guarantees the reliability service of equipment, and structure is simple, is easily achieved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the frame assumption diagram of the utility model.
Fig. 3 is the mounting structure schematic diagram of isolating transformer in the utility model.
Figure label indicates: 1, frame；2, frame protection device；3, secondary AC power supply unit；4, isolating transformer；5,
Felt pad；6, mounting rail.
Specific embodiment
The utility model is further described below in conjunction with Figure of description and specific embodiment.
Embodiment one:
As shown in Figures 2 and 3, the direct-current traction power supply equipment of the tape frame protective device of the present embodiment, including 1 He of frame
Frame protection device 2, frame 1 is installed on felt pad 5 to insulate with the earth, and to reduce the leakage of stray electrical current, frame 1 passes through one
Set Low ESR frame protection device 2 is connected with the earth；Once DC power supply unit and secondary AC power supply are single for setting in frame 1
Member 3, secondary AC power supply unit 3 exchange accessory power supply phase with external by an electrical isolation component (such as isolating transformer 4)
Even.The direct-current traction power supply equipment of the tape frame protective device of the utility model, by the defeated of former secondary AC power supply unit 3
Enter one isolating transformer 4 of end setting, make secondary AC power supply unit 3 with it is external exchange between accessory power supply it is electrical every
From solution exchange auxiliary power ground, the ground connection of secondary AC power supply unit 3 conflict with what frame protection device 2 was grounded, avoid frame
Frame protective device 2 fails, and guarantees the reliability service of equipment, and structure is simple, is easily achieved.Certainly, in this electrical isolation group
The specific implementation form of part is defined, and in other embodiments, can also realize electrical isolation using other isolated parts.
In the present embodiment, isolating transformer 4 is insulated in the inside of frame 1.Specifically, frame 1 is internally provided with more
The insulating mounting beam that root is horizontally mounted, isolating transformer 4 be securedly mounted to be insulated beam on, the iron core of isolating transformer 4 with
The ground line of external exchange accessory power supply is connected, to guarantee the insulation between isolating transformer 4 and frame 1.In addition, isolation
The power of transformer 4 and the power of secondary AC power supply unit 3 match.
In the present embodiment, frame protection device 2 includes that frame currents protect detecting element, and frame currents protect detecting element
An end Jie frame 1 on, the other end is connected with grounded screen single-point in electric substation；When frame currents protection detecting element detects
When leakage current is greater than the set value, all power supplies being connected with a DC power supply unit are disconnected, to protect personal peace
Complete and DC suppling equipment safety.
Embodiment two:
As shown in Figures 2 and 3, the direct-current traction power supply equipment of the tape frame protective device of the present embodiment, including 1 He of frame
Frame protection device 2, frame 1 is installed on felt pad 5 to insulate with the earth, and to reduce the leakage of stray electrical current, frame 1 passes through one
Set Low ESR frame protection device 2 is connected with the earth；Once DC power supply unit and secondary AC power supply are single for setting in frame 1
Member 3, secondary AC power supply unit 3 are connected by an isolating transformer 4 with the external accessory power supply that exchanges.The band of the utility model
An isolation is arranged by the input terminal in former secondary AC power supply unit 3 in the direct-current traction power supply equipment of frame protection device
Transformer 4 makes secondary AC power supply unit 3 and the external electrical isolation exchanged between accessory power supply, solves exchange auxiliary electricity
Source ground connection, the ground connection of secondary AC power supply unit 3 conflict with what frame protection device 2 was grounded, and frame protection device 2 is avoided to fail,
Guarantee the reliability service of equipment, and structure is simple, is easily achieved.
In the present embodiment, isolating transformer 4 is insulated in the inside of frame 1.Specifically, frame 1 is internally provided with more
The insulating mounting beam that root is horizontally mounted, isolating transformer 4 be securedly mounted to be insulated beam on, the iron core of isolating transformer 4 with
The ground line of external exchange accessory power supply is connected, to guarantee the insulation between isolating transformer 4 and frame 1.In addition, isolation
The power of transformer 4 and the power of secondary AC power supply unit 3 match.
In the present embodiment, frame protection device 2 includes that frame voltage protects detecting element, and frame voltage protects detecting element
An end Jie frame 1 on, the other end is connected with the cathode of a DC power supply unit primary circuit；It protects and examines when frame voltage
When survey element testing is greater than the set value to contact voltage, all power supplies being connected with a DC power supply unit are disconnected, from
And protect the safety of personal safety and DC suppling equipment.
Embodiment three:
As shown in figure 3, the present embodiment and the difference of embodiment one are only that, frame protection device 2 includes frame electricity simultaneously
Pressure protection detecting element and frame currents protect detecting element, wherein an end Jie frame 1 of frame currents protection detecting element
On, the other end is connected with grounded screen single-point in electric substation；It is set when frame currents protection detecting element detects that leakage current is greater than
When definite value, all power supplies being connected with a DC power supply unit are disconnected, so that personal safety and direct current supply be protected to set
Standby safety.Wherein on an end Jie frame 1 of frame voltage protection detecting element, the other end and a DC power supply unit one
The cathode of minor loop is connected；When frame voltage protection detecting element detect that contact voltage is greater than the set value when, disconnect it is all with
The connected power supply of DC power supply unit, to protect the safety of personal safety and DC suppling equipment.Other contents
Identical as above-described embodiment one, difference repeats herein.
It certainly, in other embodiments, can also be by all secondary AC power supply units 3 in direct-current traction power supply equipment
(the secondary device in figure) and frame 1 are insulated, by exchange secondary power system ground connection, secondary device outer case ground connection and frame
Protective grounding separates, but secondary part category is various, configurations, and all secondary devices are insulated with frame 1,
Enforcement difficulty is big.
Although the utility model has been disclosed with preferred embodiment as above, it is not intended to limit the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model technical spirit to the above reality
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.
Claims (10)
1. a kind of direct-current traction power supply equipment of tape frame protective device, including frame (1) and frame protection device (2), described
Frame (1) is installed on insulation assembly, and the frame (1) is connected by frame protection device (2) with the earth, which is characterized in that
Once DC power supply unit and secondary AC power supply unit (3), the secondary AC power supply unit are set in the frame (1)
(3) it is connected by an electrical isolation component with the external accessory power supply that exchanges.
2. the direct-current traction power supply equipment of tape frame protective device according to claim 1, which is characterized in that described electrical
Barrier assembly is insulated in the inside of the frame (1).
3. the direct-current traction power supply equipment of tape frame protective device according to claim 2, which is characterized in that the frame
(1) the more insulating mounting beams being horizontally mounted are internally provided with, the electrical isolation component is securedly mounted to the insulating mounting
Liang Shang.
4. the direct-current traction power supply equipment of tape frame protective device according to claim 1 or 2 or 3, which is characterized in that institute
Stating frame protection device (2) includes frame currents protection detecting element, an end Jie of the frame currents protection detecting element
On frame (1), the other end is connected with grounded screen single-point in electric substation；When frame currents protection detecting element detects leakage current
When being greater than the set value, all power supplies being connected with a DC power supply unit are disconnected.
5. the direct-current traction power supply equipment of tape frame protective device according to claim 1 or 2 or 3, which is characterized in that institute
Stating frame protection device (2) includes frame voltage protection detecting element, an end Jie of the frame voltage protection detecting element
On frame (1), the other end is connected with the cathode of a DC power supply unit primary circuit；When frame voltage protection detecting element inspection
When measuring contact voltage and being greater than the set value, all power supplies being connected with a DC power supply unit are disconnected.
6. the direct-current traction power supply equipment of tape frame protective device according to claim 1 or 2 or 3, which is characterized in that institute
Stating electrical isolation component is isolating transformer (4).
7. the direct-current traction power supply equipment of tape frame protective device according to claim 6, which is characterized in that the isolation
The iron core of transformer (4) is connected with the external ground line for exchanging accessory power supply.
8. the direct-current traction power supply equipment of tape frame protective device according to claim 6, which is characterized in that the isolation
The power of transformer (4) and the power of secondary AC power supply unit (3) match.
9. the direct-current traction power supply equipment of tape frame protective device according to claim 1 or 2 or 3, which is characterized in that institute
It is connected after stating the secondary earthing bar that secondary AC power supply unit (3) ground connection is uniformly connected in frame (1) with frame (1).
10. the direct-current traction power supply equipment of tape frame protective device according to claim 1 or 2 or 3, which is characterized in that
The insulation assembly includes felt pad (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821205048.6U CN208461462U (en) | 2018-07-27 | 2018-07-27 | A kind of direct-current traction power supply equipment of tape frame protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821205048.6U CN208461462U (en) | 2018-07-27 | 2018-07-27 | A kind of direct-current traction power supply equipment of tape frame protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208461462U true CN208461462U (en) | 2019-02-01 |
Family
ID=65181010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821205048.6U Active CN208461462U (en) | 2018-07-27 | 2018-07-27 | A kind of direct-current traction power supply equipment of tape frame protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208461462U (en) |
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2018
- 2018-07-27 CN CN201821205048.6U patent/CN208461462U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211129 Address after: 401120 No. 333, Changkai Road, shuangfengqiao street, Yubei District, Chongqing Patentee after: Chongqing CRRC times Electric Technology Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. |