CN109787430A - A kind of installation method of polarity reversal device case - Google Patents
A kind of installation method of polarity reversal device case Download PDFInfo
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- CN109787430A CN109787430A CN201811618016.3A CN201811618016A CN109787430A CN 109787430 A CN109787430 A CN 109787430A CN 201811618016 A CN201811618016 A CN 201811618016A CN 109787430 A CN109787430 A CN 109787430A
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- copper bar
- confluence copper
- polarity reversal
- device case
- reversal device
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Abstract
The invention discloses a kind of installation method of polarity reversal device case, this method includes the excitation lead transfer terminal box removed in hydrogenerator wind-tunnel, and is transform as polarity reversal device case ontology；By cabinet drilling polarity reversal device case ontology is installed on the position of transfer terminal box, is threaded after inlet-outlet line tapping is caught in U-shaped sealing joint strip；Polarity reversal device case ontology is opened, is installed into polarity reversal device case ontology, goes out two the first confluence copper bars and the second confluence copper bar with positive and negative anodes；First confluence copper bar positive and negative anodes are connect with rotor coil positive and negative anodes；Second confluence copper bar positive and negative anodes are connect with degaussing switch lower end positive and negative anodes；Isolation switch 1QS and 2QS are installed in two confluence copper bars；After the completion of the connection of polarity reversal device case ontology, the embedding sealing adhesive tape on chamber door fastens chamber door.Through the above scheme, invention achieves the purposes of slip ring positive and negative anodes even wearing, have very high practical value and promotional value.
Description
Technical field
The invention belongs to power station fields, in particular, being to be related to a kind of installation method of polarity reversal device case.
Background technique
Zi Ping-pu hydraulic power plant main building 4 × 190MW unit, is produced by Dongfang Electric Machine Co., Ltd..It generates electricity
Machine exciting current is the slip ring and rotor coil that rotation is passed to by stationary parts such as conducting ring, carbon brush, and slip ring is with carbon brush
Sound contact, the abrasion of contact surface has electrical, mechanical wear and the lower machinery of no current effect under the function of current between slip ring and carbon brush
Two kinds of situations of abrasion.Under the action of " anode evaporation " and " cathode dusting ", so that the abrasion of slip ring anode is small, cathode abrasion
Greatly, so needing periodically to switch slip ring polarity to keep balancing, but our factory leads to scene due to not considering the situation in design
By cable limitation and polarity can not be switched.After operation, unit slip ring room collector ring is burnt the shutdown that causes the accident, thing
The slip ring of other three machines is checked afterwards, discovery slip ring surface (positive and negative electrode) is uneven, has track, surface film oxide
Worn-out, cathode is more serious than anode, needs to carry out Liao Fan factory and office reason.Therefore how to realize that periodically switching disconnecting link is electric to switch excitation
The polarity of cable, so that slip ring positive and negative anodes surface abrasion is uniform, so that the service life for extending slip ring is current those skilled in the art
Member's urgent problem.
Summary of the invention
The purpose of the present invention is to provide a kind of installation method of polarity reversal device case, mainly solve to deposit in the prior art
Cannot change due to the polarity of excitation cable so that collector ring positive and negative anodes wear non-uniform problem.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of installation method of polarity reversal device case, the polarity reversal device case include polarity reversal device case sheet
Body, two are mounted on the first confluence copper bar and the second confluence copper bar of polarity reversal device case body interior, anode and cathode point
The rotor coil not connecting with the first confluence copper bar anode and cathode, and anode and cathode are positive with the second confluence copper bar respectively
The degaussing switch connected with cathode, first confluence copper bar and the second confluence copper bar pass through the isolation switch of two double-pole shapes
1QS and isolation switch 2QS realizes slip ring to rotor coil polarity reversal.
The installation method includes the following steps:
1) the excitation lead transfer terminal box in hydrogenerator wind-tunnel is removed, and is transformed into and has polarity reversal
The polarity reversal device case ontology of function；
2) support arm is welded on the position of former excitation lead transfer terminal box by cabinet drilling and polarity reversal device is installed
Case ontology, and threaded again after being caught in into and out of line tapping with U-shaped sealing joint strip of polarity reversal device case ontology,
Insulating press boards are fixed with bolt after the completion of threading；
3) polarity reversal device case ontology is opened, is installed into polarity reversal device case ontology, goes out two with positive and negative
The first confluence copper bar and the second confluence copper bar of pole；
4) the first confluence copper bar anode four cables of extraction are positive to slip ring room slip ring to rotor coil, while the confluence copper
It arranges cathode and draws four cables to slip ring room slip ring to rotor coil cathode；
5) the second confluence copper bar anode is introduced by four electrode cables in degaussing switch lower end, at the same the confluence copper bar cathode by
The four cathode cables in degaussing switch lower end introduce that (degaussing switch is equivalent to breaker, closes degaussing switch when building pressure, and when disconnection connects
Logical de-excitation resistance, puts into magnetism elimination circuit, prevents overvoltage, it is both demagnetization and energized circuit)；
6) two isolation switch 1QS and 2QS are installed in the central location into and out of two confluence copper bars；
7) after the completion of electrical equipment connection in polarity reversal device case ontology, in the chamber door of polarity reversal device case ontology
Upper embedding sealing adhesive tape fastens chamber door.
Further, it needs to carry out after drilling when installing the first confluence copper bar and the second confluence copper bar in the step 3)
Tin processing is warded off, then coating conductive paste is answered in the junction of the first confluence copper bar and the second confluence copper bar and drilling, then passes through spiral shell again
Bolt fastening.
Further, the second confluence copper bar in the step 3) is transversely mounted on apart from polarity reversal device case ontology bottom
At portion 140mm, the first confluence copper bar is transversely mounted on the top of distance the second confluence copper bar fore-and-aft distance 240mm, and first
The length of confluence copper bar and the second confluence copper bar is 80mm, while row's spacing of the positive electrode and negative electrode of each confluence copper bar is
80mm。
Further, isolation switch 1QS and 2QS pass through RF-4 epoxy insulating board for two isolation switch in the step 6)
It is fixed at polarity reversal device case ontology bottom plate 40mm, and the horizontal spacing of isolation switch 1QS and 2QS are 100mm.
Further, isolation switch 1QS described in the step 6) and isolation switch 2QS are double isolation switch, it is described every
A knife both ends from disconnecting link 1QS are connect with the anode of the first confluence copper bar and the second confluence copper bar respectively, the isolation switch 1QS
Another knife connect respectively with the cathode of the first confluence copper bar and the second confluence copper bar；A knife both ends of the isolation switch 2QS
It is connect respectively with the cathode of the anode of the first confluence copper bar and the second confluence copper bar, another knife difference of the isolation switch 2QS
It is connect with the anode of the cathode of the first confluence copper bar and the second confluence copper bar.
Further, first confluence copper bar and the second confluence copper bar are transversely mounted on polarity reversal device case ontology
It is interior.
Further, a knife both ends of the isolation switch 1QS respectively with the first confluence copper bar and the second confluence copper bar
Anode connection, another knife of the isolation switch 1QS are connect with the cathode of the first confluence copper bar and the second confluence copper bar respectively.
Specifically, converge with the anode of the first confluence copper bar and second copper respectively at a knife both ends of the isolation switch 2QS
The cathode of row connects, another knife of the isolation switch 2QS respectively with the cathode of the first confluence copper bar and the second confluence copper bar
Anode connection.
Compared with prior art, the invention has the following advantages:
(1) the excitation lead transfer terminal box location arrangements polarity reversal of the invention using in hydrogenerator wind-tunnel fills
It sets, the function of terminal transfer and polarity reversal is integrated in one, not only met the requirement of regulation, specification, but also saved a large amount of
Space, while the cabinet of polarity reversal device case ontology presses live physical location aperture into and out of string holes, replacement new cable is encouraged by original
Magnetoelectricity cable moves towards wiring and former cable polarity wiring, and different modes and two confluence copper are respectively adopted by two isolation switch
Row's connection, can be realized polarity switching, the positive and negative anodes of slip ring can be made to wear relatively uniform, be able to extend slip ring uses the longevity
Life, to ensure that the operational safety of unit.
(2) isolation switch installed in polarity reversal device case ontology of the invention is mounted on the lower section of degaussing switch FMK
The polarity for switching measurement meter is not had to after current divider, after slip ring polarity reversal, and isolation switch is rationally distributed in the device, behaviour
Prosecutor just, be conducive to maintenance.
(3) polarity reversal device case ontology of the invention firmly installs, steadily；Capacity, performance, the machinery of isolation switch are strong
Degree reaches design specification requirement, the stability of powerful guarantee running equipment.
Detailed description of the invention
Fig. 1 is flowage structure schematic diagram of the invention.
Fig. 2 is the schematic diagram of polarity reversal device case ontology of the present invention.
Fig. 3 is the schematic diagram of existing excitation lead changeover apparatus.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and embodiments of the present invention include but is not limited to
The following example.
Embodiment
As shown in Figure 1 to Figure 3, a kind of installation method of polarity reversal device case, the polarity reversal device case, including pole
Property changeover apparatus case ontology 1, two the first confluence copper bars 2 and the second confluence being mounted on inside polarity reversal device case ontology 1
Copper bar 3, the rotor coil 4 that anode and cathode are connect with the first confluence copper bar anode and cathode respectively, and anode and cathode point
The degaussing switch 5 not connecting with the second confluence copper bar anode and cathode, first confluence copper bar 2 and the second confluence copper bar 3 are logical
The isolation switch 1QS6 and isolation switch 2QS7 for crossing two double-pole shapes realize slip ring to rotor coil polarity reversal.
Specific mounting means is as follows:
Generator excitation cable conversion terminal case in wind-tunnel is removed.It is installed on former conversion terminal case position by drilling
Polarity reversal device case ontology, and be caught in and worn with U-shaped sealing joint strip into and out of line tapping in polarity reversal device case ontology
Insulating press boards bolt fastening is used after line again.Polarity reversal device case ontology is opened, be installed into polarity reversal device case ontology,
Two the first confluence copper bars and the second confluence copper bar with positive and negative anodes out, install the first confluence copper bar and the second confluence copper bar with
Isolation switch connecting copper bar answers mating drilling, wards off tin, coating conductive paste, then uses bolt fastening.Second confluence copper bar is transversely mounted, away from
At polarity reversal device case body bottom portion 140mm, at the fore-and-aft distance 240mm of isolation switch lower end, the first confluence copper bar is horizontal
To installation, at polarity reversal device case bodies top 140mm, at the fore-and-aft distance 240mm of isolation switch upper end, first converges
Stream copper bar, the second confluence copper bar length are 800mm, and confluence copper bar positive electrode and negative electrode spacing is 80mm.First confluence copper bar is just
Four cables are drawn to slip ring room slip ring to rotor coil anode in pole, and it is sliding to slip ring room which draws four cables
Ring is to rotor coil cathode.It is introduced in the second confluence copper bar anode by the electrode cable of degaussing switch lower end four, the confluence copper bar
Cathode is introduced by the cathode cable of degaussing switch lower end four.Two isolation knifes are being installed into and out of two confluence copper bar central locations
Lock 1QS and 2QS, isolation switch 1QS and 2QS bolt fastening are on RF-4 epoxy insulating board, and isolation switch is apart from polarity reversal
Device case ontology backboard is 40mm, and RF-4 epoxy insulating board is close to the installation of polarity reversal device case ontology backboard bolt fastening, every
It is 100mm from disconnecting link 1QS and 2QS horizontal spacing.Isolation switch 1QS, 2QS are double-pole shape isolation switch, mono- knife of isolation switch 1QS
Both ends are connect with the first confluence copper bar, the second confluence copper bar anode respectively；Another knife converges with the first confluence copper bar, second respectively
The connection of copper bar cathode；The mono- knife both ends 2QS are connect with the first confluence copper bar anode, the second confluence copper bar cathode respectively；Another knife point
It is not connect with the first confluence copper bar cathode, the second confluence copper bar anode.In device after the completion of electrical equipment connection, in polarity reversal
Embedding sealing adhesive tape on device case ontology chamber door fastens chamber door.
When operation, isolation switch 1QS puts into " combined floodgate " working condition, and isolation switch 2QS should be in " separating brake " state；Otherwise it falls
2QS investment " combined floodgate " working condition is changed, isolation switch 1QS should be in " separating brake " state, must when carrying out isolation switch switching operation
It needs to have a power failure.
Wherein, Fig. 2 working principle are as follows: isolation switch 1QS puts into " combined floodgate " working condition, and the positive circular current of slip ring is by carbon at this time
Brush flows to slip ring, and carbon brush (degaussing switch) is positive polarity, and slip ring is negative polarity, the positive ring under anode evaporation and cathode atomizing
Wear small, the abrasion of negative ring is big；Otherwise 2QS investment " combined floodgate " working condition is switched, electric current flows to carbon brush by slip ring, and carbon brush is at this time
Cathode, slip ring are anode, and negative ring abrasion is small under anode evaporation and cathode atomizing, and positive ring abrasion is big；When equipment is by putting into operation
Between regular progresss of half a year or 1 year isolation switch polarity reversal, current direction is changed by polarity reversal, promotes slip ring positive, negative
Pole even wearing.Although Fig. 3 can be realized the exchange of excitation lead, but due to being isolation switch, the power positive cathode connect is simultaneously
It has not been changed, and not as the present invention when having switched isolation switch, the power positive cathode of different isolation switch carries out
It exchanges, wherein PA is current diverter in Fig. 3, is used for measurement and protection.
Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using
Design principle of the invention, and the non-creative variation worked and made is carried out on this basis, it should belong to of the invention
Within protection scope.
Claims (8)
1. a kind of installation method of polarity reversal device case, which is characterized in that the polarity reversal device case includes polarity reversal
Device case ontology (1), two are mounted on internal the first confluence copper bar (2) of polarity reversal device case ontology (1) and the second confluence
Copper bar (3), the rotor coil (4) that anode and cathode are connect with the first confluence copper bar anode and cathode respectively, and it is positive and negative
The degaussing switch (5) that pole is connect with the second confluence copper bar anode and cathode respectively, first confluence copper bar (2) and the second confluence
Copper bar (3) realizes that slip ring to rotor coil polarity is fallen by the isolation switch 1QS (6) and isolation switch 2QS (7) of two double-pole shapes
It changes.
The installation method includes the following steps:
1) the excitation lead transfer terminal box in hydrogenerator wind-tunnel is removed, and is transformed into and has polarity reversal function
Polarity reversal device case ontology；
2) support arm is welded on the position of former excitation lead transfer terminal box by cabinet drilling and polarity reversal device case sheet is installed
Body, and threaded again after being caught in into and out of line tapping with U-shaped sealing joint strip of polarity reversal device case ontology, it threads
Insulating press boards are fixed with bolt after the completion；
3) polarity reversal device case ontology is opened, is installed into polarity reversal device case ontology, goes out two with positive and negative anodes
First confluence copper bar and the second confluence copper bar；
4) it is positive to slip ring room slip ring to rotor coil to draw four cables for the first confluence copper bar anode, while the confluence copper bar is negative
Four cables are drawn to slip ring room slip ring to rotor coil cathode in pole；
5) the second confluence copper bar anode is introduced by the electrode cable of degaussing switch lower end four, while the confluence copper bar cathode is by demagnetization
The cathode cable of lower end four is switched to introduce；
6) two isolation switch 1QS and 2QS are installed in the central location into and out of two confluence copper bars；
7) embedding on the chamber door of polarity reversal device case ontology after the completion of electrical equipment connection in polarity reversal device case ontology
Enter sealant tape, fastens chamber door.
2. a kind of installation method of polarity reversal device case according to claim 1, which is characterized in that in the step 3)
It carries out warding off tin processing after the first confluence copper bar is installed and needs to drill when the second confluence copper bar, then the first confluence copper bar and the
Coating conductive paste is answered in the junction of two confluence copper bars and drilling, is then fastened by bolts again.
3. a kind of installation method of polarity reversal device case according to claim 2, which is characterized in that in the step 3)
The second confluence copper bar be transversely mounted at polarity reversal device case body bottom portion 140mm, the first confluence copper bar laterally pacify
Mounted in the top of distance the second confluence copper bar fore-and-aft distance 240mm, and the length of the first confluence copper bar and the second confluence copper bar
For 80mm, while row's spacing of the positive electrode and negative electrode of each confluence copper bar is 80mm.
4. a kind of installation method of polarity reversal device case according to claim 3, which is characterized in that in the step 6)
Two isolation switch are fixed on apart from polarity reversal device case ontology by isolation switch 1QS and 2QS by RF-4 epoxy insulating board
At bottom plate 40mm, and the horizontal spacing of isolation switch 1QS and 2QS are 100mm.
5. a kind of installation method of polarity reversal device case according to claim 4, which is characterized in that in the step 6)
The isolation switch 1QS and isolation switch 2QS are double isolation switch, and a knife both ends of the isolation switch 1QS are respectively with first
The anode connection of confluence copper bar and the second confluence copper bar, another knife of the isolation switch 1QS respectively with the first confluence copper bar and
The cathode of second confluence copper bar connects；A knife both ends of the isolation switch 2QS respectively with the anode of the first confluence copper bar and the
The cathode of two confluence copper bars connects, and another knife of the isolation switch 2QS converges with the cathode of the first confluence copper bar and second respectively
Flow the anode connection of copper bar.
6. a kind of installation method of polarity reversal device case according to claim 5, which is characterized in that first confluence
Copper bar (2) and the second confluence copper bar (3) are transversely mounted in polarity reversal device case ontology (1).
7. a kind of installation method of polarity reversal device case according to claim 6, which is characterized in that the isolation switch
A knife both ends of 1QS (6) are connect with the anode of the first confluence copper bar (2) and the second confluence copper bar (3) respectively, the isolation switch
Another knife of 1QS (6) is connect with the cathode of the first confluence copper bar (2) and the second confluence copper bar (3) respectively.
8. a kind of installation method of polarity reversal device case according to claim 7, which is characterized in that the isolation switch
A knife both ends of 2QS (7) are connect with the anode and the cathode of the second confluence copper bar (3) of the first confluence copper bar (2) respectively, it is described every
Another knife from disconnecting link 2QS (7) is connect with the anode of the cathode of the first confluence copper bar (2) and the second confluence copper bar (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811618016.3A CN109787430B (en) | 2018-12-28 | 2018-12-28 | Installation method of polarity reversing device box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811618016.3A CN109787430B (en) | 2018-12-28 | 2018-12-28 | Installation method of polarity reversing device box |
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| Publication Number | Publication Date |
|---|---|
| CN109787430A true CN109787430A (en) | 2019-05-21 |
| CN109787430B CN109787430B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811618016.3A Expired - Fee Related CN109787430B (en) | 2018-12-28 | 2018-12-28 | Installation method of polarity reversing device box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007282490A (en) * | 2006-04-06 | 2007-10-25 | Hilti Ag | Reversible rotary electric motor |
| CN203233282U (en) * | 2013-05-27 | 2013-10-09 | 福建大唐国际宁德发电有限责任公司 | Generator with excitation bus commutation device |
| CN204103681U (en) * | 2014-10-20 | 2015-01-14 | 中国长江电力股份有限公司 | A kind of multipair excitation slip ring |
| CN204859052U (en) * | 2015-08-25 | 2015-12-09 | 南京化学工业园热电有限公司 | Female heat -extraction system of excitation sliding ring |
| CN206820610U (en) * | 2017-05-10 | 2017-12-29 | 国家电网公司 | Pole inversing device |
| KR20180014512A (en) * | 2016-08-01 | 2018-02-09 | 현대자동차주식회사 | System and method for start power generation of vehicle |
-
2018
- 2018-12-28 CN CN201811618016.3A patent/CN109787430B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007282490A (en) * | 2006-04-06 | 2007-10-25 | Hilti Ag | Reversible rotary electric motor |
| CN203233282U (en) * | 2013-05-27 | 2013-10-09 | 福建大唐国际宁德发电有限责任公司 | Generator with excitation bus commutation device |
| CN204103681U (en) * | 2014-10-20 | 2015-01-14 | 中国长江电力股份有限公司 | A kind of multipair excitation slip ring |
| CN204859052U (en) * | 2015-08-25 | 2015-12-09 | 南京化学工业园热电有限公司 | Female heat -extraction system of excitation sliding ring |
| KR20180014512A (en) * | 2016-08-01 | 2018-02-09 | 현대자동차주식회사 | System and method for start power generation of vehicle |
| CN206820610U (en) * | 2017-05-10 | 2017-12-29 | 国家电网公司 | Pole inversing device |
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| Publication number | Publication date |
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| CN109787430B (en) | 2020-12-22 |
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Granted publication date: 20201222 Termination date: 20211228 |