CN201440640U - Non-cophase counter parallel connection homopolar unit upper and lower structured rectifier - Google Patents
Non-cophase counter parallel connection homopolar unit upper and lower structured rectifier Download PDFInfo
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- CN201440640U CN201440640U CN2009200319948U CN200920031994U CN201440640U CN 201440640 U CN201440640 U CN 201440640U CN 2009200319948 U CN2009200319948 U CN 2009200319948U CN 200920031994 U CN200920031994 U CN 200920031994U CN 201440640 U CN201440640 U CN 201440640U
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Abstract
The utility model provides a non-cophase counter parallel connection homopolar unit upper and lower structured rectifier, which avoids the problems that the existing rectifier can not eliminate the failure of the inner components, and when in abnormal failure, the failure of the rectifier can be expanded to cause the expansion of terrible accident. The utility model aims to develop a non-cophase counter parallel homopolar unit upper and lower structured rectifier, the structure of which adopts the principle of double three-phase bridge non-cophase counter parallel connection, the rectifying arms with same polarity are positioned in the same unit with an up and down overlapped structure; the main circuit still adopts the type of two groups of the three-phase bridge non-cophase counter parallel connection structures, the rectifying arm is divided into two independent installing units of an upper unit and a lower unit according to the positive and negative polarity of the DC end, and the middle is provided with a high-strength flame-retardant epoxide woven glass fabric laminated sheet serving as interpolar insulation protection. The utility model provides a high-voltage heavy-current rectifier for preventing the terrible short circuit of the inside and the DC output port, two units are independently manufactured and transported, and are overlapped in field to finish the connection of the middle cooling water channel, so a rectifier which is supported by self without a cabinet body and is substantially safe is formed.
Description
One, affiliated technical field
The utility model is developed a kind of non-cophase counter parallel connection with pole unit up-down structure rectifier, owing to the particularity on its main electric structural design, is particularly useful for the ultra-large type electrolysis series rectification power system of aluminium industry.
Two, background technology
At present, the single series scale of domestic aluminum electrolysis industry is developed to 300,000 tons/every year 50000 tons/every year from 3 ∽ of middle nineteen nineties in last century; The series direct voltage also increases to 1450V from 600V ∽ 750V; The series direct current also increases to 400KA from 60KA ∽ 70KA; The rectifier of the direct parallel running of series DC power system also increases to 14 from 8 of 6 ∽; Rectifier unit electric current also increases to 50KA from 10KA ∽ 20KA.Because the rectifier DC output current is huge, prior art measure both at home and abroad also can't realize the DC loop of disjunction fault rectifier economically; When many direct parallel runnings of high-voltage large current rectifier, the interpolar puncture short takes place in wherein any rectifier inside or direct current outlet, the capital produces powerful serial direct-current short circuit electric current and (is commonly called as: adverse current), cause seriously burning (or blast) even involve and closing on rectifier of fault rectifier to reverse the pouring in of fault rectifier; When serious even make whole electrolysis series can't throw the electricity operation, the millions of at least units of the economic loss that causes are at most in hundred million yuan.Therefore, in the every performance index of rectifier that the electrolysis of super large series aluminum is used, should be with headed by the withstand voltage fail safe of rectifier (inner and direct current exports).
Yet employed homemade rectifier nearly all is the parameter amplification product of early stage low pressure series rectifier on domestic each electrolysis series at present; In conjunction with the factor of transformer device structure and performance, referring to Fig. 1, the electric structure overwhelming majority of master that present rectifier is adopted is two three-phase bridge cophase counter parallel connections.Cophase counter parallel connection structure rectifying device adopts positive and negative two groups of rectifier bridges, being in simultaneously in two bridges, two Zhizheng reversed polarity rectifier arms of conduction spatially are positioned as close to layout formation against also arm is right, utilize the both forward and reverse directions magnetic field principle of cancelling each other to weaken the space magnetic field of contrary and rectifier arm outside, and then the eddy-current heating of reduction rectifier structure spare, and help the distribution of the electric current between each device branch road in the rectifier arm.
But, positive reversed polarity rectifier arm also causes high-current rectifier when direct voltage is higher near arranging, guarantees that insulation safety difficulty contrary and that arm is internal increases, during unexpected spray arc, the inner direct current intereelectrode short-circuit of rectifier takes place very easily when the reduction of rectifier arm built-in electrical insulation and component failure particularly.For the direct-current short circuit fault of single cabinet independent operating situation, no matter the probability of its generation or economic loss are still not serious; But directly in parallel for the such multimachine of super large series aluminum electrolysis purposes, the probability of appearance and short circuit energy all increase greatly.In a single day the contrary also arm of this kind structure punctures inside or direct current outlet, because the impedance between very near its short dot of distance will be extremely low, so it will be extremely serious that short circuit will extremely badly and endanger, the aluminium electroloysis load is never to allow (because of power maintenance) to have a power failure for a long time still more.Up to now, (because of the rectifier short circuit is exploded) serious accident took place once all on the big series of the how tame at home aluminium manufacturer of this type rectifier that each complete system plant produces, the economic loss that causes is very huge.On design and making, this kind of structure rectifying device is to be the improvement that cost exchanges electric current (magnetic field) characteristic for to sacrifice voltage security, this uses super large electrolysis series (characteristics are: direct voltage height, parallel rectifier are many, load is concerning the reliability requirement strictness of power supply), belong to that house is mainly asked time in fact, thing non-used, lose more than gain.
The frequent rectifier major accident that takes place in the aluminium electroloysis industry had given each rectifier manufactory and applying unit with deep lesson in recent years.Each tame aluminium manufacturer takes technological transformation one after another to the cophase counter parallel connection structure rectifying device that is in operation: insulation between strengthening part, improve the additional device parameter or change its installation site even change measure such as main converter spare.Though this can suitably remedy the inadequate natural endowment of this structure to a certain extent, this is not a basic way of thoroughly eliminating this structure drawback.Therefore, be a long felt need on the newly-built ultra-large type electrolysis series of aluminium industry that a kind of reliability is higher, the high-voltage large current rectifier of novel structure, safe in utilization, function admirable, guarantee that the safety of Aluminium Electrolysis is normally carried out.
Three, summary of the invention
The purpose of this utility model provides a kind of non-cophase counter parallel connection with pole unit up-down structure rectifier.In order to adapt to super large series aluminum electrolysis production the strong request of rectifier reliability and fail safe, the thorough elimination are had now cophase counter parallel connection structure rectifying device in the deficiency aspect the fail safe.
Though the normal failure phenomenon of inner components and parts all can't be avoided and eliminate to any rectifier, but when components and parts take place to lose efficacy even unusual the inefficacy, such as: from inside to outside spray arc, burning or explosion time, how to avoid the rectifier fault to enlarge even cause deriving of serious accident, and guarantee the rectifier general safety, really belong to and want responsibility first of the rectifier designer.The utility model proposes for this real purpose and realizes.
The technical solution adopted in the utility model is:
Non-cophase counter parallel connection is with pole unit up-down structure rectifier, according to two non-cophase counter parallel connection circuit of three-phase bridge, adopt on the same polarity rectification unit and form for negative closed assembly under just, it is characterized in that: go up rectification unit and contain 6 positive polarity rectifier arms, following rectification unit contains 6 negative polarity rectifier arms; The rectification positive pole is drawn in anodal confluence copper bar stage casing from the top, and the rectification negative pole is drawn from negative pole confluence copper bar end, bottom, the double introducing in middle part behind the interchange end of incoming cables self-rectifying device; The intermediate layer of two rectification units is provided with insulation board in the high-insulativity preventing arc up and down.
The technical solution adopted in the utility model also comprises:
Described non-cophase counter parallel connection is characterized in that with pole unit up-down structure rectifier: adopt no cabinet self-supporting structure, flute profile epoxy insulation pulling part and support the weight of the whole conductive components of rectifier under installing on the stainless steel square steel base; The positive pole busbar that confluxes in top is delivered to down weight on the flute profile epoxy insulation pulling part successively by positive polarity rectifier arm, middle insulation board, negative polarity rectifier arm etc.; The stainless steel square steel base reaches down, and flute profile epoxy insulation pulling part, middle flute profile epoxy insulation pulling part and stainless steel top frame three parts realize overall mechanical strength jointly.
Main circuit still adopts 2 groups of three-phase bridge, but use non-cophase counter parallel connection structural shape, 12 rectifier arms are divided into 2 independent installation units up and down by the positive-negative polarity of dc terminal, and the centre is provided with 1 floor height intensity flame retardant epoxy glass cloth laminated board and does the protection of interpolar high-insulation; Last unit all is made up of (6) positive polarity rectifier arm, and the anodal outlet of rectification is positioned at the top, unit; Lower unit all is made up of (6) negative polarity rectifier arm, and the outlet of rectification negative pole is positioned at the outside, rectifier bottom (left side or right) and stretches out outside the unit; Unit 2 are independently made and are transported, arrive the user when on-the-spot more up and down closed assembly and finish in the middle of the connection of cooling water channel, forms self-supporting, the safe rectifier in essence of no cabinet.
Effect of the present utility model and advantage are:
1, rectifier has good fail safe.
Can find out with pole unit up-down structure rectifier schematic diagram from accompanying drawing 2 non-cophase counter parallel connections: the conductor that confluxes of figure middle and upper part positive polarity is in rectifier zones of different up and down with the conductor branch that confluxes of bottom negative polarity, the direct current outlet is at a distance of very far away, and rectifier diode all is in ac potential with interior conductive component up and down, the shared surface area of energized conductor that is in the both positive and negative polarity current potential is very little, therefore under any circumstance, as long as the proof voltage intensity of intermediate layer insulation board and frame is guaranteed, closely just existence of the possibility of arcing short circuit between this rectifier DC both positive and negative polarity.
Annotate: for strengthening the insulation of unit zone line, in the design of this rectifier, flute profile frame and interlayer dividing plate (thick 15mm) to the splice region between the last lower unit all adopt high-strength anti-flaming type epoxy insulation material, and be perfectly safe.
Can find out with pole unit up-down structure rectifier figure from the non-cophase counter parallel connection of accompanying drawing 3 and accompanying drawing 4:
A. go up the unit rectifier arm with not existing inner near between the lower unit rectifier arm apart from the straight line arcing.
B. for rectifier arm space outerpace arcing:
In AC side:
Near equipotential, there is not the arcing factor between 2 rectifier arms of above-below direction correspondence.Horizontal direction is faced mutually between 2 rectifier arms and is born different alternating voltages, and its electric arc belongs to and exchanges long path arc, can't form under size and the operating voltage between existing design arm.Crisscross arcing between rectifier arm up and down is because of the factor in path just more can not form.
In DC side:
The horizontal direction of every unit is faced mutually and is in equipotential between the rectifier arm, does not have the arcing factor.Corresponding rectifier arm of above-below direction and the arcing that intersects between the rectifier arm all are that folk prescription stretches out under size and the operating voltage condition in the median septum level of existing design apart from curved line to long, also can extinguish at a terrific speed even its electric arc forms; The magnetic blow-out effect of arc stream self formation in addition, electric arc can't be kept at all, thereby can not form the pernicious short circuit of direct current interpolar, has avoided the adverse current accident harm.
C. owing to each rectifying tube all used lead the arc cover and carried out the electric arc guide fence, eliminated individual devices inefficacy arcing involving and influence to all the other devices in the arm.Therefore, the be totally destroyed possibility that forms short circuit of single rectifier arm is also very little.
Even d. single rectifier arm is wiped out by electric arc and forms the arm internal short-circuit, still can bear the serial direct voltage and the transient state overshoot voltage of normal nargin design with its rectifier arm that is in same (in another unit) opposite polarity mutually.
Therefore, no matter the accident inefficacy situations such as (arcings) of which kind of device occurs, the non-cophase counter parallel connection of the utility model is all high with the fail safe of pole unit up-down structure rectifier, has good reliability simultaneously.
2, rectifier has very little operation noise.
Because each rectifier arm is to exist with monomeric form, arm itself does not contain the extensive insulation plate, and each arm 〉=600 millimeters of distances each other, and therefore the electric power that produces reduces greatly than the cophase counter parallel connection structure.In rectifier chamber, eliminated the irritated and frightening noisy environment of the sort of people of allowing in the past basically.
3, the rectifier arm has low bus conduction loss.
Because each rectifier arm element all adopted bilateral to the pressure form, shortened the length of arm greatly, and the position that exchanges inlet wire had some change more in the past also, so current path is very short, the more conventional cophase counter parallel connection structure of the electrical loss that produces during work reduces greatly.
4, the rectifier water circuit system has water quality assurance preferably.
Owing to arrange up and down between positive and negative rectification unit, the cooling pure water enters each negative pole arm separately from bottom charge for remittance device, through middle ac potential district, arrives at the positive polar arm on top, imports the water outlet charge for remittance device at top at last.Though be formed with certain potential difference up and down between the charge for remittance device, can have limited the DC leakage current of water circuit system greatly by the cooperation of outer insulation pipeline.Therefore, greatly reduce the galvano-cautery of water circuit system, guaranteed pure water water quality to a certain extent.
In addition, the cooling jacket of each element of this rectifier is the cast aluminium structure, also good effect is played in the assurance of pure water water quality.
Four, description of drawings
Fig. 1. be prior art cophase counter parallel connection rectifier main circuit schematic diagram.Fig. 2. be that the non-cophase counter parallel connection of the utility model is with pole unit up-down structure rectifier main circuit schematic diagram.Fig. 3. be the structural front view of the non-cophase counter parallel connection of the utility model with pole unit up-down structure rectifier.Fig. 4. be the left view of Fig. 3.
Each alphabetical label is represented respectively in accompanying drawing 1 and the accompanying drawing 2: the output of DC. direct current; P. direct-flow positive pole; N. direct current negative pole; AC. exchange input; A1p---c1p, a1n---c1n. exchange each phase terminal of input; REC. rectifier; RECU. unit on the rectifier; RECD. rectifier lower unit; K1. with insulating barrier in contrary and the arm; K2. phase insulation dividing plate; K3. go up insulating barrier between the lower unit; RD. fast acting fuse; D. rectifier diode.
Each number designation is represented respectively in accompanying drawing 3 and the accompanying drawing 4: descend the commutation absorption piece 1.; 2. stainless steel square steel base; 3. negative polarity rectifier arm; 4. middle level insulating barrier; 5. positive polarity rectifier arm; 6. anodal confluence copper bar; 7. go up the commutation absorption piece; 8. top insulation board; 9. stainless steel top frame; 10. positive arm phase insulation dividing plate; 11. middle flute profile epoxy insulation pulling part; 12. negative arm phase insulation dividing plate; 13. following flute profile epoxy insulation pulling part; 14. negative pole confluence copper bar; 15. fast acting fuse busbar; 16. diode element busbar; The band 17. red copper is flexible coupling; 18. end insulation board.
Five, embodiment
All rectifier was different more in the past with design, manufacturing and the installation of pole unit up-down structure rectifier for the utility model.Because the factor of heavy current, the electric structure of different masters will produce different additional effect.A lot of minor effect factors under low-voltage and little electric current, but under high pressure and big electric current, become the important effect that can influence device performance sometimes.
Below will set forth its innovative thinking, design details and execution mode from several importances:
1. rectifier overall structural arrangement and material are selected
● at the stronger characteristics of non-cophase counter parallel connection structure stray magnetic field, this rectifier adopts the bus self-supporting structure, does not establish metal shell; And except that hanging box and bottom square steel supporting seat employing (stainless steel) metalwork were played in the top, all the other most structure installed parts that are in the high-intensity magnetic field district all adopted non-metallic material.
● main circuit component utilizes high-strength epoxy insulating part and special epoxy grooved (100mm*50mm*12mm) pulling part to be supported on the stainless steel square steel base.
● positive and negative 2 rectifier arms of going up the same upright position of lower unit correspondence are in and exchange same phase, conduction simultaneously in service.
● positive and negative rectifier arm has the same structure size, and the rectifier arm in each unit adopts evenly (600mm) interval layout.
● (corresponding exchange alternate) is provided with the high-strength anti-flaming epoxy glass cloth laminated board and carries out insulating protection between each rectifier arm.
● top, unit and lower unit bottom also all uses the high-strength anti-flaming epoxy glass cloth laminated board to carry out isolating and protecting on the rectifier.
● 12 interchange ends of incoming cables of this rectifier are positioned at middle level district, rectifier rear portion (2 rows up and down), and last unit exchanges inlet wire and is positioned at this unit rear lower, and lower unit exchanges inlet wire and is positioned at this upper back, unit.
● pure water cooling charge for remittance device adopts stainless steel tube, is arranged in the rectifier unit rear portion, lower unit water inlet, the water outlet of last unit; The series connection methods for cooling is adopted in the cell branch water route up and down, and every arm 4 tunnel goes out on advancing down; The arrival end of water inlet charge for remittance device is provided with the pure water pressure sensor, and the port of export of water outlet charge for remittance device is provided with the pure water temperature transducer.
● brachium pontis commutation absorption piece packet configuration (1 group on per 2 arms), and be arranged at the forward position in bottom and top of rectification unit respectively, be convenient to observe and safeguard.
● rectifier inner all be electrically connected securing members, may produce the hardware of eddy-current heating, all adopt stainless steel.
2. diode is arranged and the crimping structure design
● diode and fast acting fuse are installed busbar and are adopted square-section diplopore red copper material, and full Surface Finishing is handled and bright nickel plating (containing the hole), good conductivity, and loss is low, and corrosion resistance is good;
● among the design, 2N diode element becomes N to being arranged above and below with fast acting fuse in the rectifier arm, about two shared one group of securing member two point forms of diode element to pressing, improve the combination property of arm;
● adopt stainless steel to press beam, reduce the eddy-current heating of high-intensity magnetic field;
● use insulating sleeve to cut off the eddy current loop;
● use the insulation of poly-PTFE reinforcing element screw rod, and carry out two insulating Design;
● adopt the design of crimping securing member electric potential floating, reduce the risk of arcing;
● utilize transparent flame-retarding to lead the guiding processing that the arc cover carries out the unexpected arcing of diode;
● diode is eliminated wire stress with using soft copper belt to flexibly connect between fast melting;
3. current sharing design in the arm
Be current-sharing index in the arm of protecting just non-cophase counter parallel connection structure rectifying device, adopt following measure among the design:
● about diode element adopts to pressing, about two elements by waiting pressure drop configuration;
● suitably strengthen busbar cross-section, shorten rectifier arm length as far as possible;
● rationally utilize batch dispersed coupling of the pressure drop that element had current-sharing.
4. reduce the design of structure eddy-current heating
The eddy-current heating factor of non-cophase counter parallel connection rectifier structure has influenced the application of this kind rectifier to a certain extent.For reducing the eddy-current heating of structural member as far as possible, the design has done following consideration:
● crucial hardware adopts stainless steel material;
● in the zone that can't avoid magnetic flux to pass, do everything possible and eliminate the eddy current path;
● key structure spare adopts insulating part;
● adopt no cabinet design.
5. electric insulation safety Design
In the conceptual design of this project rectifier, the first concern point is exactly the fail safe of electric insulation.Therefore, in design, except selecting high-quality device and material for use, on structural design, also taken into full account and exchanged the alternate and electric insulation safety issue direct current interpolar, improved the fail safe of direct current voltage across poles insulation as far as possible.
● rectifier arm element busbar is placed DC side, and the conductive component quantity and the surface area that make rectifier inside have positive and negative DC potential reduce to minimum;
● the direct-flow positive pole bus-bar is arranged on the top of unit, and negative bus-bar is arranged on the bottom of lower unit, widens distance between the both positive and negative polarity as far as possible;
● the thick flame retardant epoxy insulation board of 15mm is set between the positive and negative unit, strengthens direct current electrode insulation;
● (exchange alternate) between rectifier arm the thick flame retardant epoxy insulation board of 10mm is set;
● rectification unit bottom and top are provided with the thick flame retardant epoxy insulation board of 10mm.
● use the insulation of poly-PTFE reinforcing element screw rod, and carry out two insulating Design;
● element crimping securing member is done the electric potential floating design, reduce the risk of arcing;
● utilize transparent flame-retarding lead the arc cover when carrying out single diode fails the guiding of unexpected arcing handle;
● all adopt withstand voltage, heat-resisting, the fire-retardant lead of 3000Vac with the lead that main circuit has electrical connection;
● all (not having electrical connection with main circuit) signal conductors adopt high pressure, heat-resisting, fire-retardant lead;
● signal monitoring circuit (1 minitype circuit board) places in the outer control cubicle of rectifier, and the electricity that helps (under the accident condition) between main cabinet signal and PLC unit is isolated; Guarantee the fail safe of PLC system.
6. rectifying device and bus Cooling Design
● the square water-filled radiator of special (patented product) aluminium matter is adopted in the cooling of this rectifier diodes element, helps keeping pure water water quality;
● polyamine fat semihard preforming sebific duct and thread bush syndeton are adopted in the branch water route, and not only the life-span is long and easy for installation;
● every arm adopts 4 branch road pure water cooling lines and the positive and negative group of rectifier arm type of cooling of connecting up and down to arrange that this rectifier helps all even water circuit system exhaust of each branch's water route flow by the design of medium (0.20Mpa ∽ 0.30Mpa) operation hydraulic pressure;
● the element bus is with the water route arranged crosswise of fast acting fuse bus, and each branch's water route flow is relative to balance with the transmission heat;
● go up the corresponding positive and negative rectifier arm of lower unit by the same spatial configuration of doing mutually of AC side, go up between lower unit branch's water route series electrical pressure reduction and improve other electrology characteristic to reduce;
● (stainless steel) charge for remittance device is in the positive negative potential of different direct currents respectively (charge for remittance device potential value of living in is determined by the high value resistor dividing potential drop of direct current interpolar pure water up and down up and down, be offset to some extent to the two poles of the earth respectively from earth potential), as utilize the exterior insulation pipeline to connect, can reduce water circuit system electric leakage corrosion current.
7. signal monitoring system design
Rectifier switch amount status signal has:
● 12 tunnel master's fast acting fuse (sensitive switch) actuating signals;
● 12 circuit component bus heat alarms;
● 12 tunnel commutations absorb fault (capacitor breakdown) signal.
In the design mounting means of contact bus temperature detection relay has been done special insulation processing: utilize the excellent heat conductivity of high alumina porcelain body and good electric insulating quality to come the package temperature relay.
The rectifier analog signals has:
● 1 tunnel cooling pure water inlet pressure (4-20mA) signal;
● 1 tunnel cooling pure water outlet temperature (4-20mA) signal;
● 1 road commutating voltage dividing potential drop (100: 1) signal (on AC/DC overvoltage respiratory box, drawing);
For ease of wiring, all holding wire terminals all are positioned at the rectifier front portion, rely on the unit central side.Two cabinet wiring positions are symmetrical in the unit center line about unit.
8. outside overvoltage protection design
The overvoltage that rectifier is produced at the unloaded breaking-closing operating of rectifier transformer, and the infringement that exchanges outside atmosphere discharge that network system and DC bus system may suffer etc., this rectifier is provided with 1 outside independent " ac/dc overvoltage absorptive unit " of installing, be installed on rectifier and exchange the inlet wire side, Stainless Steel Shell, wall hanging is installed.
Outside overpressure absorbing circuit adopts " AC/DC multiport star band earth electrode " pattern.Absorb device based on high-power zinc oxide varistor, be equipped with 2 tunnel RC circuit by angle scheme and parameter matching.
The outside circuit that absorbs should be tried one's best near rectifier; External absorption lead-in wire should be lacked as far as possible, and employing is not less than 6mm
2The fire-retardant flexible cord of copper core of/3000Vac specification; The external ground utmost point should have the low resistance that meets national lightning protection standard.
9. maintenanceability design
● this rectifier adopts no cabinet (bus self supporting type) structure, and rectifier arm is shorter, and spacing arm is bigger, and the degree of depth is less, and maintenance and maintenance are comparatively convenient;
● the faster fuse complexity that press-fits owing to rectifier cell, need certain operating space, therefore, the design is arranged in rectifier cabinet front side (being in the DC master row side) with rectifier cell, helps maintenance;
● commutation absorption circuit is arranged at rectification unit bottom and top with the pattern of parts, and install forward position, is convenient to observe, safeguards and overhauls;
● the connection of branch's water route sebific duct all adopts thread bush to connect, and sebific duct was installed and convenient disassembly when last lower unit was spliced;
● each status monitoring signal terminal of rectifier independently is provided with by last lower unit, is positioned at the anterior direct current negative pole outlet rightabout (centerline side of 2 rectifiers of unit) in unit, and cell position is close up and down.
10. rectifier factory assemble sequence and method
Below will assemble each link and set forth its concrete implementation step from factory.
The utility model rectifier should be about to each rectifier arm earlier assemble (positive and negative rectifier arm fit is identical, and only diode element polarity need be reversed) separately and finish before the assembling of last lower unit.Then, last lower unit is assembling respectively earlier, will go up lower unit at last again and be stacked, and connect the water route of connecting up and down, and finish general assembly.
Each rectifier arm assemble sequence is: fast acting fuse (RD) is crimped on the fast molten busbar (15) in pairs, be flexible coupling band (17) and fastening annexes (label slightly) etc. of diode element (D), red copper are pressed on the diode element busbar (16) in pairs, with (4 of arm end insulation strutbeams, label is slightly) be fastened with fast molten busbar (15) and diode element busbar (16), with each red copper be flexible coupling band (17) (for element with melt soon between bonding conductor) be connected with corresponding melt soon (RD).Carefully check the component polarity of negative rectifier arm (3) and positive rectifier arm (5) during assembling, each carries out fastening to rectifier cell moment of torsion in accordance with regulations, and each installation step all should be undertaken by standard, uses when treating the unit assembling after each rectifier arm assembles.
Lower unit by: stainless steel square steel base (2), end insulation board (18), down flute profile epoxy insulation pulling part (13), commutation absorption piece (1), negative pole rectifier arm (3), a negative level property bus-bar (14), negative arm phase insulation dividing plate (12), middle flute profile epoxy insulation pulling part (11), middle insulation board parts such as (4) are formed down.
Last unit by: middle flute profile epoxy insulation pulling part (11), anodal rectifier arm (5), positive arm phase insulation dividing plate (10), stainless steel top frame (9), top insulation board (8), go up commutation absorption piece (7), positive level property bus-bar parts such as (6) are formed.
The lower unit assemble sequence is:
During the lower unit assembling, should at first end insulation board (18) (thickness 10mm) be loaded in the frame of stainless steel square steel base (2), lean against in twos on the post top, front and back (in horizontal direction) of stainless steel square steel base (2) then 4 following flute profile epoxy insulation pulling parts (13) (playing the cross bearer effect) are installed privately, and 6 negative polarity rectifier arms are stood and be fixed on the part (13), use 2 middle flute profile epoxy insulation pulling parts (11) that each negative polarity arm upper end (along continuous straight runs) is fixed; 7 negative arm phase insulation dividing plates (12) and negative polarity bus-bar (14) next are installed; Commutation absorption piece (1) under 3 groups, water inlet charge for remittance device and sebific duct (label slightly) and middle insulation board (4) etc. are installed at last.
Last unit assemble sequence is:
Earlier 6 groups of positive polarity rectifier arms (5) are set up on the mounting disc (fitting attachments takes off during the unit general assembly, and is not shown in the figures), will be plugged in an insulation beam end outer rim on the rectifier arm before and after the stainless steel top frame (9) again, and with bolt that it is fastening; Flute profile epoxy insulation pulling part (11) in the use, it is fixing that all positive polarity rectifier arm (5) bottom insulation strutbeam (label is slightly) places, end are given periphery, makes lower unit become as a whole; Top insulation board (8) and the positive pole busbar (6) that confluxes is installed on the top of stainless steel top frame (9); Water outlet charge for remittance device and sebific duct (label slightly) are installed at last, commutation absorption piece (7) and 7 positive arm phase insulation dividing plates (10) on 3 groups.
Claims (2)
1. non-cophase counter parallel connection is with pole unit up-down structure rectifier, according to two non-cophase counter parallel connection circuit of three-phase bridge, adopt on the same polarity rectification unit to forming for negative closed assembly just down, it is characterized in that: go up rectification unit and contain 6 positive polarity rectifier arms (5), following rectification unit contains 6 negative polarity rectifier arms (3); The rectification positive pole is drawn in anodal confluence copper bar (6) stage casing from the top, and the rectification negative pole is drawn from bottom negative pole confluence copper bar (14) end, the double introducing in middle part behind the interchange end of incoming cables self-rectifying device; The intermediate layer of two rectification units is provided with insulation board in the high-insulativity preventing arc (4) up and down.
2. non-cophase counter parallel connection according to claim 1 is with pole unit up-down structure rectifier, it is characterized in that: adopt no cabinet self-supporting structure, flute profile epoxy insulation pulling part (13) and support the weight of the whole conductive components of rectifier under stainless steel square steel base (2) go up to be installed; The positive pole busbar (6) that confluxes in top is delivered to down weight on the flute profile epoxy insulation pulling part (13) successively by positive polarity rectifier arm (5), middle insulation board (4), negative polarity rectifier arm (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009200319948U CN201440640U (en) | 2009-02-24 | 2009-02-24 | Non-cophase counter parallel connection homopolar unit upper and lower structured rectifier |
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| CN2009200319948U CN201440640U (en) | 2009-02-24 | 2009-02-24 | Non-cophase counter parallel connection homopolar unit upper and lower structured rectifier |
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| CN201440640U true CN201440640U (en) | 2010-04-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924455A (en) * | 2010-07-27 | 2010-12-22 | 中国科学院等离子体物理研究所 | Current equalizing structure of high-current rectifier bridge arm |
| CN103401435A (en) * | 2013-07-19 | 2013-11-20 | 中国科学院等离子体物理研究所 | Non-cophase inverse parallel water-cooling aluminum-alloy current-sharing bridge arm structure for current transformer |
-
2009
- 2009-02-24 CN CN2009200319948U patent/CN201440640U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924455A (en) * | 2010-07-27 | 2010-12-22 | 中国科学院等离子体物理研究所 | Current equalizing structure of high-current rectifier bridge arm |
| CN103401435A (en) * | 2013-07-19 | 2013-11-20 | 中国科学院等离子体物理研究所 | Non-cophase inverse parallel water-cooling aluminum-alloy current-sharing bridge arm structure for current transformer |
| CN103401435B (en) * | 2013-07-19 | 2016-05-18 | 中国科学院等离子体物理研究所 | For the non-cophase counter parallel connection water-cooling aluminum alloy current equalizing bridge arm configuration processed of current transformer |
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Owner name: XI'AN PAIRUI POWER SEMICONDUCTOR CONVERTING TECHNO Free format text: FORMER OWNER: BAOTOU ALUMINIUM CO., LTD.;XIAN POWER ELECTRICS RESEARCH INSTITUTE Effective date: 20121220 |
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Effective date of registration: 20121220 Address after: Two East Road 710077 in Shaanxi province Xi'an City High-tech Zone Jin Industry Patentee after: XI'AN PERI POWER SEMICONDUCTOR CONVERTER TECHNOLOGY CO., LTD. Patentee after: Baotou Aluminum Co., Ltd. Address before: Study on power electronics 710061 Shaanxi city of Xi'an province Suzaku Avenue No. 94 Patentee before: Xi'an Power Electronics Research Institute Patentee before: Baotou Aluminum Co., Ltd. |
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Address after: Two East Road 710077 in Shaanxi province Xi'an City High-tech Zone Jin Industry Patentee after: Xi'an Pairui power semiconductor converter technology Limited by Share Ltd Patentee after: Baotou Aluminum Co., Ltd. Address before: Two East Road 710077 in Shaanxi province Xi'an City High-tech Zone Jin Industry Patentee before: XI'AN PERI POWER SEMICONDUCTOR CONVERTER TECHNOLOGY CO., LTD. Patentee before: Baotou Aluminum Co., Ltd. |
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Granted publication date: 20100421 |