CN202717592U - Novel high-voltage starting device for polycrystalline silicon reducing furnace - Google Patents
Novel high-voltage starting device for polycrystalline silicon reducing furnace Download PDFInfo
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- CN202717592U CN202717592U CN 201220357653 CN201220357653U CN202717592U CN 202717592 U CN202717592 U CN 202717592U CN 201220357653 CN201220357653 CN 201220357653 CN 201220357653 U CN201220357653 U CN 201220357653U CN 202717592 U CN202717592 U CN 202717592U
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical group data:image/svg+xml;base64,<?xml version='1.0' encoding='iso-8859-1'?>
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 [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 53
- 230000000875 corresponding Effects 0.000 claims description 9
- 229920005591 polysilicon Polymers 0.000 claims description 7
- 238000000034 methods Methods 0.000 abstract description 10
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 281000183701 Siemens companies 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000001012 protector Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 3
- 238000006243 chemical reactions Methods 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Abstract
The utility model discloses a novel high-voltage starting device for a polycrystalline silicon reducing furnace. The starting device mainly aims at a reducing furnace the silicon core arrangement is of which is that four pairs of silicon cores are a group and is used for a silicon core starting breakdown stage for polycrystalline silicon production in a Siemens process. The starting device mainly consists of a boosting transformer with two different voltage levels, an electric reactor, a contactor, a fuse protector, a current detection device, a programmable logic controller (PLC) unit, an electric grounding knife switch and a grounding resistor, wherein the silicon cores which need to be subjected to high voltage breakdown are directly connected with the output of the boosting transformer in a mode that a switch is not needed to be switched and isolated; a current value detected by the current detection device is sent to the PLC unit; the PLC controls actions of the contactor and the electric grounding knife switch according to the detected current; when the reducing furnace is started, high voltage with the high voltage level is applied to each pair of silicon cores at first, and the transformer with the high voltage level is switched into the transformer with the low voltage level after the current rises to the maximum output current of the transformer; and while the high voltage with the low voltage level is applied to every two pairs of silicon cores, the current is switched to the normal power supply to supply power after the current continuously rises, so that the high voltage starting is finished. Then, the four pairs of silicon cores are used as heating sources, the normal power supply is used to totally break down the rest of the silicon cores to enter a normal production stage.
Description
One, technical field
The utility model relates to a kind of Novel polysilicon reduction furnace high pressure starting device, the unloading phase of being used for the silicon core puncture of Siemens process polycrystalline silicon production.
Two, background technology
At present, domestic high voltage startup system generally is the former limit of step-up transformer thyristor phase shifting control and controls size of current in the high voltage startup process, have simultaneously a dedicated transformer that power supply is provided for high pressure starting device with is connected cover isolation cabinet when being used for disconnecting high voltage startup with being connected of normal power source, this scheme not only control method is complicated, need the thyristor trigger module, but also need dedicated transformer and a large amount of high-tension switch cabinets, take larger land area and cost of investment.On the other hand, domestic general high voltage starts isolates separately power supply for every pair of silicon core, after the insulation of silicon core electrode wherein is breakdown, from curent change, can't judge that the silicon core is breakdown or electrode is destroyed, if untimely powered-down can make electrode and chassis of reducing furnace suffer more serious destruction.
Three, utility model content
The utility model provides a kind of Novel polysilicon reduction furnace high pressure starting device.Mainly for one group of 4 pairs of high pressure starting device of polysilicon reduction furnace that the silicon core carries out high-voltage breakdown, this device directly uses reduction furnace technique Circuit Fault on Secondary Transformer power supply to boost to be the high voltage startup power supply, load silicon core is directly connected in the output of step-up transformer under the safety isolation prerequisite of assurance high-low voltage power source by its method, saves a large amount of high-tension switch cabinets; And control method becomes contactor control by the transformer primary side thyristor control, simplifies control program, and whether simultaneously can also detect electrode for reduction furnace has breakdown in the process of high voltage startup.
The technical scheme that its technical problem that solves the utility model adopts is: it comprises the reactor that is linked in sequence, transformer, trip switch, the single-phase step-up of two kinds of different voltage ranges, the mode that adopts Same Name of Ends to link is directly connected on the load silicon core, is connected with stake resistance and grounding switch at silicon core load first and last end; The step-up transformer of every pair of corresponding voltage levels of silicon core, the corresponding low-voltage-grade step-up transformer of per two pairs of silicon cores, the former limit of voltage levels step-up transformer current-limiting reactor, low-voltage-grade step-up transformer are high short circuit impedance transformer; Load silicon core is directly connected in the output of single-phase step-up transformer, totally 4 of voltage levels step-up transformers of every pair of silicon core correspondence, totally 2 of the corresponding low-voltage-grade step-up transformers of per two pairs of silicon cores, transformer and transformer Same Name of Ends link, connect a stake resistance and current transducer and pass through a grounding switch ground connection at silicon core load head end, the load of silicon core is terminal directly by a grounding switch ground connection, and all grounding switchs are controlled by same electro-motor; In the output loop of transformer and stake resistance loop, be respectively arranged with current transducer, for detection of high voltage startup electric current and grounding current.
The beneficial effects of the utility model are that complete assembly need not to be equipped with separated transformer and high-tension switch cabinet isolated high-voltage and the normal power source for high voltage startup, saves great amount of cost; PLC is the break-make of control contactor only, and mainly by circuit restriction itself, control is simple for current control; In start-up course, can detect and whether exist electrode for reduction furnace breakdown.
Four, description of drawings
Fig. 1 is schematic circuit diagram of the present utility model.
Fig. 2 is system chart of the present utility model.
Among the figure: the load of 1----silicon core, 2----voltage levels step-up transformer, 3----low-voltage-grade step-up transformer, 4----current-limiting reactor, the 5----contactor, 6----fusible cut-out, 7----stake resistance, the 8----grounding switch, 9----current transducer, 10----power supply.
Five, embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to accompanying drawing, it comprises the reactor that is linked in sequence, transformer the utility model, trip switch, the single-phase step-up of two kinds of different voltage ranges, the mode that adopts Same Name of Ends to link is directly connected on the load silicon core, is connected with stake resistance and grounding switch at silicon core load first and last end; The step-up transformer of every pair of corresponding voltage levels of silicon core, the corresponding low-voltage-grade step-up transformer of per two pairs of silicon cores, the former limit of voltage levels step-up transformer current-limiting reactor, low-voltage-grade step-up transformer are high short circuit impedance transformer.Load silicon core is directly connected in the output of single-phase step-up transformer, totally 4 of voltage levels step-up transformers of every pair of silicon core correspondence, totally 2 of the corresponding low-voltage-grade step-up transformers of per two pairs of silicon cores, transformer and transformer Same Name of Ends link, connect a stake resistance and current transducer and pass through a grounding switch ground connection at silicon core load head end, the load of silicon core is terminal directly by a grounding switch ground connection, and all grounding switchs are controlled by same electro-motor.In the output loop of transformer and stake resistance loop, be respectively arranged with current transducer, for detection of high voltage startup electric current and grounding current.
Silicon core reduction furnace high pressure starting device in Siemens process polycrystalline silicon production, the high-pressure side Same Name of Ends of four voltage levels step-up transformers 2 links to each other and is connected in the load of silicon core, the high-pressure side of same two low-voltage-grade step-up transformers 3 also adopts Same Name of Ends to link to each other and is connected to the load of silicon core, four current branch in its silicon core load 1 loop are equipped with current transducer 9 for detection of the silicon core electric current of high voltage startup, primary coil order and the current-limiting reactor 4 of voltage levels step-up transformer 2, contactor 5, fusible cut-out 6 links to each other, limit its maximum output current by current-limiting reactor 4, low-voltage-grade step-up transformer 3 adopts high short circuit impedance transformer to limit maximum output current, its primary coil order and contactor 5, fusible cut-out 6 links to each other, and the maximum output current of low-voltage-grade step-up transformer 3 is greater than voltage levels.The incoming power unification of all transformers is connected to same single phase poaer supply, and this power supply 10 is provided by a certain voltage range of reduction furnace technique transformer.Stake resistance 7 and grounding switch 8 ground connection are passed through respectively in two ends in the load of silicon core, one current transducer 9 are housed for detection of the grounding current in the high voltage startup process at its current circuit.
The control unit that the utility model is system with its PLC unit is responsible for the monitoring of whole start-up course.After starting beginning, at first initialize and receive enabled instruction of PLC disconnects grounding switch, send electricity for reduction furnace technique transformer, and the grounding switch that then closes guarantees the isolation of reduction furnace normal power source and high voltage startup power supply.The contactor of control voltage levels transformer is charged, apply the high pressure of voltage levels at every pair of silicon core, the Current rise that detects until current transducer is to the maximum output current of this transformer, disconnect the contactor of voltage levels transformer, the contactor of low-voltage-grade transformer closes, continue to promote silicon core electric current to the maximum output current of this transformer, the contactor that disconnects the low-voltage-grade transformer also disconnects grounding switch simultaneously, and should organize the silicon core and be handed over to normal power source and power.Whether in this process, current transducer always monitoring stream is crossed the electric current of stake resistance, breakdown by the size reaction electrode for reduction furnace of judging electric current.
After 4 pairs of silicon cores all puncture, disconnect grounding switch, transfer to the normal power source series-fed.At this moment, these 4 pairs of silicon cores are increased to more than 300 degree interior temperature of stove as heating source.Under this temperature, normal power source adopts bypass-series connection separately to all the other every group 4 pairs of silicon cores, thereby perhaps the multiple-series translative mode applies normal voltage and its puncture can be entered the normal production phase.
Claims (3)
1. Novel polysilicon reduction furnace high pressure starting device, it comprises the reactor that is linked in sequence, transformer, trip switch, it is characterized in that: the single-phase step-up of two kinds of different voltage ranges, the mode that adopts Same Name of Ends to link is directly connected on the load silicon core, is connected with stake resistance and grounding switch at silicon core load first and last end; The step-up transformer of every pair of corresponding voltage levels of silicon core, the corresponding low-voltage-grade step-up transformer of per two pairs of silicon cores, the former limit of voltage levels step-up transformer current-limiting reactor, low-voltage-grade step-up transformer are high short circuit impedance transformer.
2. a kind of Novel polysilicon reduction furnace high pressure starting device according to claim 1, it is characterized in that: load silicon core is directly connected in the output of single-phase step-up transformer, totally 4 of voltage levels step-up transformers of every pair of silicon core correspondence, totally 2 of the corresponding low-voltage-grade step-up transformers of per two pairs of silicon cores, transformer and transformer Same Name of Ends link, connect a stake resistance and current transducer and pass through a grounding switch ground connection at silicon core load head end, the load of silicon core is terminal directly by a grounding switch ground connection, and all grounding switchs are controlled by same electro-motor.
According to claim 1 with 2 described a kind of Novel polysilicon reduction furnace high pressure starting devices, it is characterized in that: in the output loop of transformer and stake resistance loop, be respectively arranged with current transducer, for detection of high voltage startup electric current and grounding current.
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| CN 201220357653 CN202717592U (en) | 2012-07-14 | 2012-07-14 | Novel high-voltage starting device for polycrystalline silicon reducing furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220357653 CN202717592U (en) | 2012-07-14 | 2012-07-14 | Novel high-voltage starting device for polycrystalline silicon reducing furnace |
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| CN202717592U true CN202717592U (en) | 2013-02-06 |
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| CN 201220357653 CN202717592U (en) | 2012-07-14 | 2012-07-14 | Novel high-voltage starting device for polycrystalline silicon reducing furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003394A (en) * | 2014-06-11 | 2014-08-27 | 陕西天宏硅材料有限责任公司 | Electrical system and starting method of reduction furnace with polycrystalline silicon rods |
| CN104129788A (en) * | 2014-08-11 | 2014-11-05 | 重庆大全泰来电气有限公司 | System for starting polycrystalline silicon reduction furnace |
| CN106300918A (en) * | 2016-10-18 | 2017-01-04 | 四川英杰电气股份有限公司 | A kind of improved Siemens start-up circuit and method |
| CN106933119A (en) * | 2015-12-30 | 2017-07-07 | 内蒙古盾安光伏科技有限公司 | Polycrystalline silicon reducing furnace power regulating cabinet control system |
| CN108111026A (en) * | 2017-12-22 | 2018-06-01 | 南京因泰莱电器股份有限公司 | It is a kind of to possess from the polysilicon power-supply controller of electric implementation method for opening function |
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2012
- 2012-07-14 CN CN 201220357653 patent/CN202717592U/en not_active IP Right Cessation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003394A (en) * | 2014-06-11 | 2014-08-27 | 陕西天宏硅材料有限责任公司 | Electrical system and starting method of reduction furnace with polycrystalline silicon rods |
| CN104003394B (en) * | 2014-06-11 | 2016-04-06 | 陕西天宏硅材料有限责任公司 | Polycrystalline silicon rod reduction furnace electrical system and starting method thereof |
| CN104129788A (en) * | 2014-08-11 | 2014-11-05 | 重庆大全泰来电气有限公司 | System for starting polycrystalline silicon reduction furnace |
| CN104129788B (en) * | 2014-08-11 | 2015-12-09 | 重庆大全泰来电气有限公司 | A kind of start up system of polycrystalline silicon reducing furnace |
| CN106933119A (en) * | 2015-12-30 | 2017-07-07 | 内蒙古盾安光伏科技有限公司 | Polycrystalline silicon reducing furnace power regulating cabinet control system |
| CN106300918A (en) * | 2016-10-18 | 2017-01-04 | 四川英杰电气股份有限公司 | A kind of improved Siemens start-up circuit and method |
| CN106300918B (en) * | 2016-10-18 | 2018-12-28 | 四川英杰电气股份有限公司 | A kind of improved Siemens start-up circuit and method |
| CN108111026A (en) * | 2017-12-22 | 2018-06-01 | 南京因泰莱电器股份有限公司 | It is a kind of to possess from the polysilicon power-supply controller of electric implementation method for opening function |
| CN108111026B (en) * | 2017-12-22 | 2020-09-18 | 南京因泰莱电器股份有限公司 | Implementation method of polycrystalline silicon power supply controller with self-starting function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130206 Termination date: 20190714 |