CN203761306U - Silicon controlled rectifier valve subassembly for medium-and-high-voltage solid soft starting cabinet - Google Patents
Silicon controlled rectifier valve subassembly for medium-and-high-voltage solid soft starting cabinet Download PDFInfo
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- CN203761306U CN203761306U CN201420163930.4U CN201420163930U CN203761306U CN 203761306 U CN203761306 U CN 203761306U CN 201420163930 U CN201420163930 U CN 201420163930U CN 203761306 U CN203761306 U CN 203761306U
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- silicon controlled
- silicon
- unit
- solid soft
- controlled rectifier
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 73
- 239000010703 silicon Substances 0.000 title claims abstract description 73
- 239000007787 solid Substances 0.000 title claims abstract description 28
- 230000001960 triggered effect Effects 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Power Conversion In General (AREA)
Abstract
The utility model provides a silicon controlled rectifier valve subassembly for a medium-and-high-voltage solid soft starting cabinet. The silicon controlled rectifier valve subassembly comprises a shell, wherein partitions are arranged in the shell and divide the shell into three spaces which are independent from one another; and a triggering and protecting unit, a silicon controlled rectifier unit and a voltage-sharing and absorbing unit are respectively placed in the three spaces. The triggering and protecting unit, the voltage-sharing and absorbing unit and the anti-parallel silicon controlled rectifier series-connection device are integrated in a box made of an insulation material, so that an independent bidirectional silicon controlled rectifier serial-connection power subassembly with complete functions is formed, a pulse signal transmitting circuit and a silicon controlled rectifier protecting circuit are arranged on the same triggering plate, triggering coils with the same phases on different triggering plates are strung together by using a high-voltage electric wire, the problem existing in a high-voltage signal transmitting interface and a low-voltage signal transmitting interface and the problem that series-connection silicon controlled rectifiers cannot be triggered synchronously are solved, a control circuit is greatly simplified, silicon controlled rectifiers are protected, the size of the medium-and-high-voltage solid soft starting cabinet is reduced, and the safety and the practicality on a product are improved.
Description
Technical field
The utility model relates to a kind of power cell of mesohigh solid soft start cabinet, particularly a kind of thyristor valve assembly for mesohigh solid soft start cabinet.
Background technology
Mesohigh solid soft start cabinet rose at home the beginning of this century, the special equipment that it uses while being the starting of mesohigh alternating current motor, its effect is to reduce starting current, the investment of reduction power supply facilities, and soft start simultaneously also can extend the useful life of motor and load thereof.
So-called solid-state soft starter, refers in particular to and uses the soft starter of controllable silicon (thyristor) as power component, and operation principle is referring to Fig. 1, and in Fig. 1, R/S/T is major loop incoming power, and U/V/W is major loop outlet.SCR between inlet wire and outlet is controllable silicon, and the effect of controllable silicon in circuit is the size of controlling motor starting electric current.In figure, JC is vacuum contactor, and its effect is closed after starting process, makes main circuit power direct sending motor, and motor enters running status.
In 3-10kV mesohigh solid soft start cabinet, mainly comprise controllable silicon (thyristor) valve module, mesohigh vacuum contactor, current transformer, voltage transformer, lightning arrester and cpu controller etc., referring to Fig. 2, Fig. 2 with the difference of Fig. 1 is: the controllable silicon use of all being connected in Fig. 2, this is because single controllable silicon is withstand voltage limited, and mesohigh loop must multiple series connection.
In mesohigh solid soft start cabinet product in early stage, controllable silicon is laterally put, and triggering, protection, absorption separate (discrete) with controllable silicon string, is not formed with collection and triggers, protects, all presses the valve module that is absorbed in one, there is no modularization.Again because controllable silicon string does not have insulation shell, and in cabinet between electrified body or all need over the ground to have certain safe distance.Therefore, this structure need to take space larger in cabinet, and creating mesohigh solid soft start cabinet width is 1400mm, and 2300mm, thickness 1500mm are identical with 10kV standard switch cabinet for its height.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art; the purpose of this utility model is to propose a kind of thyristor valve assembly for mesohigh solid soft start cabinet; by series winding application after multiple silicon-controlled device inverse parallels; form synchronous triggering, overvoltage protection, all press the valve module that is absorbed as one; dwindle the volume of mesohigh solid soft start cabinet; improved fail safe, be convenient to install, change and maintenance, have simple in structure, insulation reliably, the feature of superior performance.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of thyristor valve assembly for mesohigh solid soft start cabinet; comprise housing 1; housing 1 is the cubic cavity body structure of upper and lower end opening; in housing 1, be provided with dividing plate 8; housing 1 is divided into three separate spaces, places respectively trigger protection unit 2, controllable silicon unit 3, all press absorptive unit 4.
Described housing 1 adopts the fire-retardant SMC plate of 4mm or other insulating sheet material.
Described trigger protection unit 2 comprises trigger protection plate 5, is arranged on dividing plate 8, and the transfer circuit of pulse triggering signal, controllable silicon overvoltage crowbar are located on trigger protection plate 5 simultaneously.
In described trigger protection unit 2, adopt high-tension bus-bar 6 that synchronous controllable silicon is triggered to magnet ring 7 and be worn together, make it flow through same pulse current, to reach the triggering absolute synchronization of serial connection controllable silicon in mesohigh solid soft start cabinet.
Described controllable silicon unit 3 comprises that two is the silicon-controlled device 9 that one group of inverse parallel connects; two sides clamps with radiator 10; two silicon-controlled devices are on the same group the high pressure pie silicon-controlled device that parameter is identical; the trigger protection circuit of trigger protection unit 2 is connected with antiparallel silicon-controlled device respectively with all pressures absorbing circuit of all pressing absorptive unit 4, then carries out multilayer series connection.
The beneficial effects of the utility model:
1. by integrated to triggering, protection, absorption and controllable silicon; develop the thyristor valve assembly unit of tape insulation shell; by power of controlled silicon assembly mould blocking, dwindle the volume of mesohigh solid soft start cabinet, the 1000mm that the width reduction that makes mesohigh soft starting cabinet product is present market popularity.
2. the trigger board of having developed band protection, is made in the transmission of pulse signal, silicon controlled rectifier protecting circuit in a trigger board.
3. pioneeringly in soft starting cabinet with high-tension bus-bar, synchronous controllable silicon is triggered to magnet ring and be worn together, make it flow through same pulse current, to reach the triggering absolute synchronization of serial connection controllable silicon in mesohigh solid soft start cabinet, solved the high-low pressure interface problem that triggering signal is transmitted simultaneously.
4. with three thyristor valve assembly units, add necessary control circuit and protection device, can be generally for the mesohigh solid soft start cabinet of the 3-15kV of motor.Valve module can play the effect that regulates electric current, voltage, power in cabinet, has not only improved fail safe, and has made installation, maintenance convenient.
Brief description of the drawings
Fig. 1 is prior art solid soft start cabinet schematic diagram.
Fig. 2 is prior art mesohigh solid soft start cabinet electric diagram.
Fig. 3 is valve module shell structure schematic diagram.
Fig. 4 is valve module structural representation, wherein: Fig. 4 (a) is left view; Fig. 4 (b) is front view.
Fig. 5 is mesohigh solid soft start cabinet schematic diagram.
Fig. 6 is silicon-controlled device inverse parallel circuit diagram.
Fig. 7 is valve module electrical connection diagram.
Fig. 8 is magnet ring operation principle schematic diagram.
Fig. 9 is trigger protection plate circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 3, Fig. 4; a kind of thyristor valve assembly for mesohigh solid soft start cabinet; comprise housing 1; housing 1 is the cubic cavity body structure of upper and lower end opening; adopt the fire-retardant SMC plate of 4mm or other insulating sheet material to make; in housing 1, be provided with dividing plate 8, housing 1 is divided into three separate spaces, place respectively trigger protection unit 2, controllable silicon unit 3, all press absorptive unit 4.
Referring to Fig. 5, three valve modules are placed in the regulator cubicle of metal sealing as the core parts of mesohigh solid soft start, make soft starting cabinet width dimensions be optimized for 1000mm.
Referring to Fig. 6, inverse parallel controllable silicon connects.A left side is reverse controllable silicon, and A1, K1, G1 are respectively its anode, negative electrode and the control utmost points; The right side is forward controllable silicon, and A2, K2, G2 are respectively its anode, negative electrode and the control utmost points.
Referring to Fig. 7, controllable silicon unit 3 comprises that two is one group of silicon-controlled device 9 that carries out inverse parallel connection, is positioned in two-layer radiator 10(and generally manufactures with aluminium section bar) between, then multilayer set, also claims silicon stack.The high pressure pie silicon-controlled device that two silicon-controlled devices are on the same group identical parameters, the trigger protection circuit of trigger protection unit 2 and all pressures absorbing circuit of all pressing absorptive unit 4 respectively with carry out antiparallel silicon-controlled device and be connected, then carry out multilayer series connection.Silicon-controlled device can be set to multilayer cascaded structure, and the number of plies that voltage height presses is many, 3kV, 6kV, 10kV voltage are set to respectively two-layer, three layers, five layers cascaded structure.
All press absorptive unit 4 to be formed by some electric capacity, resistance, install concentratedly on an insulation board.All press absorptive unit 4 to comprise absorption circuit, absorption circuit is static voltage sharing R in parallel after Absorption Capacitance C connects with absorption resistance R
0, be then connected across antiparallel silicon-controlled device two ends.
Static resistance R
0resistance is far smaller than controllable silicon resistance value, so static drop is pressed R
0distribute.The R of every layer
0unanimously, just consistent by serial connection controllable silicon quiescent voltage.
Each silicon controlled node capacitance is variant, and the dynamic pressure drop that the controllable silicon in series loop is born varies (voltage distributes by capacitive reactance), inhomogeneous, bears the large just easily damage of voltage.The capacitance that Absorption Capacitance C is set is the more than 100 times of controllable silicon node capacitance amount, and the capacitance of every layer of Absorption Capacitance C of absorption circuit is made as unanimously, consistent to reach the dynamic pressure drop that every layer of silicon-controlled device bear.
Referring to Fig. 7, Fig. 8, trigger theory.Trigger protection unit 2 comprises trigger protection plate 5; be arranged on dividing plate 8; the transfer circuit of pulse triggering signal, controllable silicon overvoltage crowbar are located on trigger protection plate 5 simultaneously; adopting high-tension bus-bar 6 that multiple synchronous controllable silicons are triggered to magnet ring 7 is worn together; make it flow through same pulse current; current phase, the amplitude in every layer of magnet ring secondary coil, responded to are identical, are used for triggering every controllable silicon of series connection, and every the controllable silicon that reaches series connection is opened, closes synchronous.
Referring to Fig. 9, circuits for triggering.Magnet ring secondary coil L1, L2 one end are connected with K1, the K2 of inverse parallel silicon-controlled device respectively, and be connected to the positive pole of diode D5, diode D6 by resistance R 1, resistance R 2, the other end of L1, L2 is connected to respectively the positive pole of diode D3, diode D4 by resistance R 3, resistance R 4, the negative pole of diode D3, diode D4 is connected with control utmost point G1, the control utmost point G2 of controllable silicon unit 3 respectively.
Forward triggers: when having start pulse signal in the right high-tension bus-bar 6, magnet ring secondary coil L2 induced potential anode has been added to forward silicon controlled control utmost point G2 by R4, diode D4, and negative terminal has been added to negative electrode K2, has met controllable silicon and has opened condition;
Oppositely trigger: when having start pulse signal in left side high-tension bus-bar 6, magnet ring is paid coil L1 induced potential anode and has been added to forward silicon controlled control utmost point G1 by R3, diode D3, and negative terminal has been added to negative electrode K1, has met controllable silicon and has opened condition.
Referring to Fig. 9, the realization of controllable silicon over-voltage protecting function. in the time bearing overvoltage between K1, K2 on controllable silicon:
If forward overvoltage, i.e. K1 high potential, K2 electronegative potential, two-way Breakover diode D1, D7, D8, the right one side of something of D2 are breakdown, and electric current is point two-way after resistance R 1, D1, D7, R5, D8, D2: deliver to forward silicon controlled negative electrode K2 through R2 1.; 2. deliver to forward silicon controlled control utmost point G2 through D6.Be actually with the pressure drop forced trigger forward controlled silicon conducting on resistance R2, the lower voltage that K1, K2 are 2, controllable silicon is protected;
If oppositely bear overvoltage, i.e. K2 high potential, K1 electronegative potential, two-way Breakover diode D1, D7, D8, the left one side of something of D2 are breakdown, and electric current is point two-way after resistance R 2, D2, D8, R5, D7, D1: deliver to reverse silicon controlled negative electrode K1 through R1 1.; 2. deliver to reverse silicon controlled control utmost point G1 through D5.Be actually with the reverse controlled silicon conducting of pressure drop forced trigger on resistance R1, the lower voltage that K2, K1 are 2, controllable silicon is protected.
Claims (5)
1. the thyristor valve assembly for mesohigh solid soft start cabinet; comprise housing (1); it is characterized in that; housing (1) is the cubic cavity body structure of upper and lower end opening; in housing (1), be provided with dividing plate (8) and be divided into three separate spaces, place respectively trigger protection unit (2), controllable silicon unit (3), all press absorptive unit (4).
2. a kind of thyristor valve assembly for mesohigh solid soft start cabinet according to claim 1, is characterized in that, described housing (1) adopts the fire-retardant SMC plate of 4mm or other insulating sheet material.
3. a kind of thyristor valve assembly for mesohigh solid soft start cabinet according to claim 1; it is characterized in that; described trigger protection unit (2) comprises trigger protection plate (5); be arranged on dividing plate (8) upper, the transfer circuit of pulse triggering signal, controllable silicon overvoltage crowbar are located on trigger protection plate (5) simultaneously.
4. a kind of thyristor valve assembly for mesohigh solid soft start cabinet according to claim 1; it is characterized in that; in described trigger protection unit (2); adopting high-tension bus-bar (6) that synchronous controllable silicon is triggered to magnet ring (7) is worn together; make it flow through same pulse current, to reach the triggering absolute synchronization of serial connection controllable silicon in mesohigh solid soft start cabinet.
5. a kind of thyristor valve assembly for mesohigh solid soft start cabinet according to claim 1; it is characterized in that; described controllable silicon unit (3) comprises that two is the silicon-controlled device (9) that one group of inverse parallel connects; radiator for two sides (10) clamps; two silicon-controlled devices are on the same group the high pressure pie silicon-controlled device that parameter is identical; the trigger protection circuit of trigger protection unit (2) is connected with antiparallel silicon-controlled device respectively with all pressures absorbing circuit of all pressing absorptive unit (4), then carries out multilayer series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163930.4U CN203761306U (en) | 2014-04-04 | 2014-04-04 | Silicon controlled rectifier valve subassembly for medium-and-high-voltage solid soft starting cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163930.4U CN203761306U (en) | 2014-04-04 | 2014-04-04 | Silicon controlled rectifier valve subassembly for medium-and-high-voltage solid soft starting cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN203761306U true CN203761306U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420163930.4U Expired - Lifetime CN203761306U (en) | 2014-04-04 | 2014-04-04 | Silicon controlled rectifier valve subassembly for medium-and-high-voltage solid soft starting cabinet |
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| Country | Link |
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| CN (1) | CN203761306U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016146086A3 (en) * | 2015-03-19 | 2017-01-12 | Ripd Research And Ip Development Ltd. | Devices for overvoltage, overcurrent and arc flash protection |
| CN110350825A (en) * | 2019-08-21 | 2019-10-18 | 苏州艾克威尔科技有限公司 | Motor high pressure soft starting device |
| US12003088B2 (en) | 2022-10-27 | 2024-06-04 | Ripd Ip Development Ltd | Devices for overvoltage, overcurrent and arc flash protection |
-
2014
- 2014-04-04 CN CN201420163930.4U patent/CN203761306U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016146086A3 (en) * | 2015-03-19 | 2017-01-12 | Ripd Research And Ip Development Ltd. | Devices for overvoltage, overcurrent and arc flash protection |
| US10447023B2 (en) | 2015-03-19 | 2019-10-15 | Ripd Ip Development Ltd | Devices for overvoltage, overcurrent and arc flash protection |
| US11527879B2 (en) | 2015-03-19 | 2022-12-13 | Ripd Ip Development Ltd | Devices for overvoltage, overcurrent and arc flash protection |
| CN110350825A (en) * | 2019-08-21 | 2019-10-18 | 苏州艾克威尔科技有限公司 | Motor high pressure soft starting device |
| US12003088B2 (en) | 2022-10-27 | 2024-06-04 | Ripd Ip Development Ltd | Devices for overvoltage, overcurrent and arc flash protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160620 Address after: 710000, building J28, No. 2, West Avenue, new industrial zone, hi tech Zone, Shaanxi, Xi'an Patentee after: XI'AN WESTPOW POWER ELECTRONICS Co.,Ltd. Address before: 710082, building 520, building 302, West labour Road, Xi'an, Shaanxi Patentee before: Upstairs sun |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211125 Address after: 710000 No. 25, building 719, Fenghui South Road, Lianhu District, Xi'an City, Shaanxi Province Patentee after: Upstairs sun Address before: 710000 building J28, No. 2, West Avenue, new industrial park, high tech Zone, Xi'an, Shaanxi Province Patentee before: XI'AN WESTPOW POWER ELECTRONICS Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
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| CX01 | Expiry of patent term |