CN203216980U - Mining explosion-proof high-voltage frequency converter direct current bus voltage indicating device - Google Patents
Mining explosion-proof high-voltage frequency converter direct current bus voltage indicating device Download PDFInfo
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- CN203216980U CN203216980U CN 201320100768 CN201320100768U CN203216980U CN 203216980 U CN203216980 U CN 203216980U CN 201320100768 CN201320100768 CN 201320100768 CN 201320100768 U CN201320100768 U CN 201320100768U CN 203216980 U CN203216980 U CN 203216980U
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- circuit board
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- direct current
- current bus
- indicating device
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Abstract
The utility model relates to a mining explosion-proof high-voltage frequency converter direct current bus voltage indicating device comprising resistors and an illuminating circuit board, wherein the resistors and the illuminating circuit board are connected in series at positive and negative ends of a direct current bus, and positions where the resistors are connected with the illuminating circuit board are close to an end of the direct current bus. A light emitting diode is connected on the illuminating circuit board, two ends of the positive electrode and the negative electrode of the light emitting diode are respectively connected with optical fibers, and the tail ends of the optical fibers are connected with a support module. The device is characterized in that light of the light emitting diode on the illuminating circuit board can be led out by the optical fibers, whether voltage exists across the direct current bus of a frequency converter can be determined based on whether the optical fibers illuminate, safety and reliability are realized, and visual directness of display is also realized.
Description
Technical field
The utility model relates to a kind of voltage indication means, specifically, relates to a kind of mine anti-explosion high voltage converter DC bus-bar voltage indicating device.
Background technology
The DC bus-bar voltage of explosion-proof high-pressure frequency converter externally must have the charged indication of bus under the coal mine, and this function is passed through in the existing explosion-proof frequency converter: 1, resistance in series and stabilivolt between bus add luminous circuit board at the stabilivolt two ends.The defective of this mode is, the lead-in wire two ends of light emitting diode easily produce common mode voltage on the luminous circuit board, size is in 1/2nd of DC voltage, formation is to the high pressure of frequency converter casing, in case it is bad that lead wire insulation is handled, can discharge to the frequency converter shell, even cause dc-side short-circuit, have certain potential safety hazard.If directly at bus two ends serial connection luminous circuit board, observe difficult.2, the mode that the high voltage converter that has is isolated by voltage is imported a low-voltage signal, connects reflective diode, and diode lead does not have high pressure over the ground under the normal condition, in case but isolation module breaks down, and still leaded to shell over-voltage breakdown hidden danger.
The utility model content
The utility model is at the big present situation of existing high voltage converter DC bus-bar voltage indicating device potential safety hazard, provide a kind of simple in structure, safe and reliable, technical difficulty is low, the mine anti-explosion high voltage converter DC bus-bar voltage indicating device of intuitive display.
The technical solution of the utility model is: a kind of mine anti-explosion high voltage converter DC bus-bar voltage indicating device, comprise resistance and luminous circuit board, be connected with light emitting diode on the luminous circuit board, resistance and luminous circuit board are connected in series in the positive and negative terminal of dc bus, described light emitting diode positive and negative end is connected with optical fiber respectively, and optical fiber connector is connected with supporting module.
Preferably: the link position of resistance and luminous circuit board is near an end of dc bus.
Preferably: luminous circuit board also comprises stabilivolt, current-limiting resistance.
The beneficial effects of the utility model are: the utility model has been studied a kind of mine anti-explosion high voltage converter DC bus-bar voltage indicating device, this device is derived the light signal of light emitting diode on the luminous circuit board by optical fiber, utilize optical fiber light indication high voltage converter DC bus-bar voltage, the no high pressure that goes between, the potential safety hazard of having avoided traditional mine anti-explosion high voltage converter DC bus-bar voltage indicating device lead-in wire overtension to bring.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
Specific embodiment of the utility model as shown in Figure 1: a kind of mine anti-explosion high voltage converter DC bus-bar voltage indicating device, comprise resistance 1, luminous circuit board 2, be connected with light emitting diode 3 on the luminous circuit board 2, resistance 1 and luminous circuit board 2 are connected in series in the positive and negative terminal of dc bus, described light emitting diode 3 positive and negative ends are connected with optical fiber 4 respectively, and optical fiber 4 ends are connected with supporting module 5.Luminous circuit board also comprises stabilivolt, current-limiting resistance, and circuit board is played voltage stabilizing and current-limiting protection effect.The link position of resistance and luminous circuit board shortens the high pressure path near an end of dc bus, reduces the high-voltage breakdown risk.
During work, if having voltage between frequency changer direct current bus, then the photodiode 3 on the circuit board 2 is luminous, and the light signal at photodiode 3 two ends is derived by optical fiber 4, and optical fiber 4 is luminous; If the frequency converter outage, the discharge of inverter storage capacitor, along with storage capacitor is lighted minimizing, voltage reduces gradually between dc bus, and the brightness of light emitting diode 3 reduces gradually, and optical fiber 4 brightness also reduce gradually; Treat that voltage will be 0 between dc bus, light emitting diode 3 extinguishes, and optical fiber 4 is not also luminous.
Claims (3)
1. mine anti-explosion high voltage converter DC bus-bar voltage indicating device, comprise resistance and luminous circuit board, resistance and luminous circuit board are connected in series in the positive and negative terminal of dc bus, be connected with light emitting diode on the luminous circuit board, it is characterized in that: described light emitting diode positive and negative end is connected with optical fiber respectively, and optical fiber connector is connected with supporting module.
2. mine anti-explosion high voltage converter DC bus-bar voltage indicating device as claimed in claim 1 is characterized in that: an end of the close dc bus of the link position of described resistance and luminous circuit board.
3. mine anti-explosion high voltage converter DC bus-bar voltage indicating device as claimed in claim 1, it is characterized in that: described luminous circuit board also comprises stabilivolt, current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100768 CN203216980U (en) | 2013-03-05 | 2013-03-05 | Mining explosion-proof high-voltage frequency converter direct current bus voltage indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100768 CN203216980U (en) | 2013-03-05 | 2013-03-05 | Mining explosion-proof high-voltage frequency converter direct current bus voltage indicating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203216980U true CN203216980U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320100768 Expired - Fee Related CN203216980U (en) | 2013-03-05 | 2013-03-05 | Mining explosion-proof high-voltage frequency converter direct current bus voltage indicating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203216980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787959A (en) * | 2017-01-17 | 2017-05-31 | 苏州艾克威尔科技有限公司 | A kind of high pressure soft starting device running status display system |
| CN107582375A (en) * | 2017-09-30 | 2018-01-16 | 武汉资联虹康科技股份有限公司 | A kind of ear-clip electrodes with fiber optic conduction |
-
2013
- 2013-03-05 CN CN 201320100768 patent/CN203216980U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787959A (en) * | 2017-01-17 | 2017-05-31 | 苏州艾克威尔科技有限公司 | A kind of high pressure soft starting device running status display system |
| CN107582375A (en) * | 2017-09-30 | 2018-01-16 | 武汉资联虹康科技股份有限公司 | A kind of ear-clip electrodes with fiber optic conduction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 266000, No. 662 Century Avenue, Qingdao, Shandong, Jiaonan Patentee after: QINGDAO CCS VFD MOTOR CO., LTD. Address before: 266000, No. 1003, King Hai Road, Jiaonan, Shandong, Qingdao Patentee before: Qingdao Tianxin Variable Frequency Motor Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20160305 |