CN205958708U - Alternate water -cooled generator direct current test instrument that has water path connection - Google Patents
Alternate water -cooled generator direct current test instrument that has water path connection Download PDFInfo
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- CN205958708U CN205958708U CN201620456902.0U CN201620456902U CN205958708U CN 205958708 U CN205958708 U CN 205958708U CN 201620456902 U CN201620456902 U CN 201620456902U CN 205958708 U CN205958708 U CN 205958708U
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Abstract
The utility model provides an alternate water -cooled generator direct current test instrument that has water path connection, includes the direct current test instrument, direct current test instrument connection water -cooled generator, the direct current test instrument includes the coil, the diode, and resistance, electric capacity, the voltmeter, ampere meter and branch road, the water -cooled generator includes the water path connection system, resistance includes first resistance, second resistance, and third resistance and fourth resistance, the ampere meter includes milliammeter and microammeter, winding connection diode and first resistance, first ohmic connection electric capacity. The utility model discloses the water -cooled generator major insulation that can effectively detect the alternate water path connection of having is made moist and the local defect, can detect stator winding end portion's insulating defect to dielectric strength through the withstand voltage examination generator major insulation of direct current reaches testing dielectric strength, in time discovers the purpose of defect.
Description
Technical field
This utility model is related to generator test technology, particularly to the DC experiment technology of water-cooled generator.
Background technology
At present, the DC experiment of water-cooled generator is an important tests project of inspection generator insulating performance, its
In, the alternate water-cooled generator having water route to connect, routinely test method be unable to successful implementation DC experiment, maintenance repair is tieed up
In shield, tested using ac voltage withstanding and substitute, this does not obviously meet《DL/T596 power equipment preventive trial code》Requirement,
Maintenance repair is tested with ac voltage withstanding in safeguarding and is replaced, and also there are following two problems：One is the accumulation effect of ac voltage withstanding test
Generator insulating should be caused with potential injury；Two is that ac voltage withstanding test is insulated more effectively for discovery Stator Slots, right
It is not so good as DC experiment effectively in stator end defect, and day-to-day operation is vulnerable to injury most in safeguarding and needs most inspection exactly
End defect, therefore alternate test can not reach effective purpose finding defect.
Utility model content
This utility model solves prior art and can not carry out the alternate water-cooled generator direct current having water branch road to connect examination
The problem tested, this tester can effectively detect the alternate water-cooled generator major insulation having water route to connect and make moist and local defect,
The insulation defect of stator winding end, and the dielectric strength by DC break down voltage examination generator stator insulation can be detected, reach examination
Test examination dielectric strength, find the purpose of defect in time.
Concrete technical scheme of the present utility model is as follows：Including DC experiment instrument, DC experiment instrument connects internal water cooling and generates electricity
Machine, described DC experiment instrument includes coil, diode, resistance, electric capacity, voltmeter, ammeter and branch road, and described internal water cooling generates electricity
Machine includes water route connection system, and described resistance includes first resistor, second resistance, 3rd resistor and the 4th resistance, described electric current
Table includes milliammeter and microampere meter, and described coil connects diode and first resistor, and described first resistor connects electric capacity, and described the
One resistance is also connected with second resistance, and described second resistance connects voltmeter, and described voltmeter connects milliammeter, and described milliammeter divides
Not Lian Jie microampere meter and 3rd resistor, described 3rd resistor connects the 4th resistance, described 4th resistance one end earth lead, described the
Four resistance are also connected with battery, and described water route connection system includes phase three-wire three and equivalent resistance, and described equivalent resistance one end connects
3rd resistor, its other end connects phase three-wire three, and described phase three-wire three includes equivalent resistance and the line circle that alternate water route connects,
The equivalent resistance that described alternate water route connects is respectively the first equivalent resistance and the second equivalent resistance, and described line circle includes first
Line circle, the second line circle and the 3rd line circle, described first equivalent resistance be connected to the first line circle and the second line circle it
Between, described second equivalent resistance is connected between the second line circle and the 3rd line circle, and described second connects coils from parallel connection of coils the 3rd even
Coil, described second line circle and the 3rd line circle are connected in parallel on milliammeter and connect on the branch road of 3rd resistor.
It is below attached technical scheme of the present utility model.
Preferably, described microampere meter earth lead.
Preferably, described equivalent resistance is each equivalent resistance to collection pipe water route.
Technique effect of the present utility model：A kind of alternate water-cooled generator direct current having water route to connect examination of this utility model
Test instrument, be changed to connect instrument charge for remittance pipe end mode by non-pressurised by earthing mode, alternate water branch road leakage current is shielded, solution
Instrument microampere meter light current electric current of having determined outranges, and microampere meter light current current measurement be exactly what is needed want Stator Slots insulation and
The leakage current to iron core for the overhang insulation, simultaneously alternate and core insulation relatively bears the examination of test voltage, has reached examination
Test purpose.
Brief description
Fig. 1 is the schematic diagram of the DC experiment instrument of water-cooled generator of this utility model embodiment.
In figure：DC experiment instrument 1, coil 10, diode 11, first resistor 121, second resistance 122,3rd resistor 123,
4th resistance 124, electric capacity 13, voltmeter 14, milliammeter 151, microampere meter 152, branch road 16, battery 17, water-cooled generator 2,
Equivalent resistance 21, the first equivalent resistance 22, the second equivalent resistance 23, the first line circle 201, the second line circle 202, the 3rd line
Circle 203, joint 300.
Specific embodiment
Below in conjunction with the accompanying drawings utility model is described further.
As shown in figure 1, a kind of alternate water-cooled generator DC experiment instrument having water route to connect of the present embodiment, including straight
Stream tester 1, DC experiment instrument 1 connects water-cooled generator 2, and described DC experiment instrument 1 includes coil 10, diode 11, electricity
Resistance, electric capacity 13, voltmeter 14, ammeter and branch road 16, described water-cooled generator 2 includes water route connection system, described resistance
Including first resistor 121, second resistance 122,3rd resistor 123, the 4th resistance 124, described ammeter includes milliammeter 151 He
Microampere meter 152, described coil 10 connects diode 11 and first resistor 121, and described first resistor 121 connects electric capacity 13, described
First resistor 121 is also connected with second resistance 122, and described second resistance 122 connects voltmeter 14, and described voltmeter 14 connects milliampere
Table 151, described milliammeter 151 connects microampere meter 152 and 3rd resistor 123 respectively, and described 3rd resistor 123 connects the 4th resistance
124, described 4th resistance 124 one end earth lead, described 4th resistance 124 is also connected with battery 17, described water route connection system bag
Include phase three-wire three and equivalent resistance 21, described equivalent resistance 21 is each equivalent resistance to collection pipe water route, described equivalent electric
Hinder 21 one end and connect 3rd resistor 123, its other end connects phase three-wire three.Described phase three-wire three includes what alternate water route connected etc.
Effect resistance and line circle, it is respectively the first equivalent resistance 22 and the second equivalent resistance 23.Described line circle includes the first line
Circle 201, the second line circle 202 and the 3rd line circle 203, described first equivalent resistance 22 be connected to the first and second line circles it
Between, described second equivalent resistance 23 is connected to second and the 3rd between line circle, described second clamping ring 202 the 3rd line in parallel
Circle 202, described second line circle 202 and the 3rd clamping ring 202 are connected in parallel on the branch road 16 that milliammeter 151 connects 3rd resistor 123
On.It is additionally provided with joint 300 on described branch road 16, so arranges, dotted line inframe is water-cooled generator DC experiment instrument；Dotted line frame
Outer for the alternate water-cooled generator stator coil having water branch road to connect and water route connection system, wherein, R1 is the alternate water of A, B
The equivalent resistance that road connects；R2 is the equivalent resistance that the alternate water route of B, C connects；Ry is each equivalent electric to collection pipe water route
Resistance.Whole wiring and conventional method difference are exactly changed to connect collection pipe shielding mode by non-pressurised by earthing mode, this
Utility model solves the problems, such as that the alternate water inner cold motor having water branch road to connect can not carry out DC experiment, effectively prevent use
Ac voltage withstanding test replaces causing potential injury to generator insulating, reaches examination dielectric strength, the timely purpose finding defect,
Meet《DL/T596 power equipment preventive trial code》Requirement.
Further, the DC experiment instrument of water-cooled generator improves to routine test, changes test connection, will be non-
Pressurization is changed to connect instrument charge for remittance pipe end mode by earthing mode, and alternate water branch road leakage current is shielded, and solves instrument
The problem that microampere meter μ A electric current outranges, what microampere meter μ A measured is exactly what is needed the Stator Slots insulation wanted and overhang insulation to ferrum
The leakage current of core, meanwhile, alternate and relative iron core（Ground）Insulation bears the examination of test voltage, has reached test objective,
After the non-pressurised instrument charge for remittance pipe end that connects of this DC experiment instrument, on instrument, the current potential of collection pipe terminal does not change, or and
Originally equally close to zero potential, tested device, instrument and operator safety are not affected, achieve leakage electricity in testing
Stream and DC break down voltage test data, under each step-by-step test voltage, the leakage current difference of three-phase is little, and has passed through the straight of 40kV
Stream pressure test, demonstrates the correctness of measurement.
A kind of alternate water-cooled generator DC experiment instrument having water route to connect of this utility model, by non-pressurised by being grounded
Mode is changed to connect instrument charge for remittance pipe end mode, and alternate water branch road leakage current is shielded, and solves instrument microampere meter light current electricity
Stream outranges, the Stator Slots insulation that being exactly what is needed of microampere meter light current current measurement the is wanted and overhang insulation leakage electricity to iron core
Stream, simultaneously alternate and core insulation relatively bears the examination of test voltage, has reached test objective.It is pointed out that on
State preferred embodiment and technology design of the present utility model and feature are only described, its object is to allow person skilled in the art
Will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.All bases
Equivalence changes or modification that this utility model spirit is made, all should cover within protection domain of the present utility model.
Claims (2)
1. a kind of alternate water-cooled generator DC experiment instrument having water route to connect, including DC experiment instrument, DC experiment instrument is even
Water receiving internal cooling generator, described DC experiment instrument includes coil, diode, resistance, electric capacity, voltmeter, ammeter and branch road, institute
State water-cooled generator include water route connection system it is characterised in that：Described resistance includes first resistor, second resistance, and the 3rd
Resistance and the 4th resistance, described ammeter includes milliammeter and microampere meter, and described coil connects diode and first resistor, described
First resistor connects electric capacity, and described first resistor is also connected with second resistance, and described second resistance connects voltmeter, described voltmeter
Connect milliammeter, described milliammeter connects microampere meter and 3rd resistor respectively, described 3rd resistor connects the 4th resistance, described the
Four resistance one end earth leads, described 4th resistance is also connected with battery, and described water route connection system includes phase three-wire three and equivalent electric
Resistance, described equivalent resistance one end connects 3rd resistor, and its other end connects phase three-wire three, and described phase three-wire three includes alternate water route
The equivalent resistance connecting and line circle, the equivalent resistance that described alternate water route connects is respectively the first equivalent resistance and second equivalent
Resistance, described line circle includes the first line circle, the second line circle and the 3rd line circle, and described first equivalent resistance is connected to
Between one line circle and the second line circle, described second equivalent resistance is connected between the second line circle and the 3rd line circle, institute
State second and connect coils from parallel connection of coils the 3rd line circle, described second line circle and the 3rd line circle are connected in parallel on milliammeter and connect 3rd resistor
Branch road on.
2. as claimed in claim 1 a kind of alternate have water route connect water-cooled generator DC experiment instrument it is characterised in that：Institute
Stating equivalent resistance is each equivalent resistance to collection pipe water route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456902.0U CN205958708U (en) | 2016-05-18 | 2016-05-18 | Alternate water -cooled generator direct current test instrument that has water path connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456902.0U CN205958708U (en) | 2016-05-18 | 2016-05-18 | Alternate water -cooled generator direct current test instrument that has water path connection |
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| Publication Number | Publication Date |
|---|---|
| CN205958708U true CN205958708U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620456902.0U Active CN205958708U (en) | 2016-05-18 | 2016-05-18 | Alternate water -cooled generator direct current test instrument that has water path connection |
Country Status (1)
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| CN (1) | CN205958708U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970325A (en) * | 2017-05-15 | 2017-07-21 | 中国大唐集团科学技术研究院有限公司华东分公司 | The generator manually wound insulation reversal connection ray detection device and method measured in high potential |
| CN113820598A (en) * | 2021-09-30 | 2021-12-21 | 华能湖南岳阳发电有限责任公司 | Direct-current voltage withstand test method after generator water collecting pipe is fixedly grounded |
-
2016
- 2016-05-18 CN CN201620456902.0U patent/CN205958708U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970325A (en) * | 2017-05-15 | 2017-07-21 | 中国大唐集团科学技术研究院有限公司华东分公司 | The generator manually wound insulation reversal connection ray detection device and method measured in high potential |
| CN106970325B (en) * | 2017-05-15 | 2024-04-02 | 中国大唐集团科学技术研究院有限公司华东分公司 | Generator handbag insulation reverse wiring inspection device and method for high potential measurement |
| CN113820598A (en) * | 2021-09-30 | 2021-12-21 | 华能湖南岳阳发电有限责任公司 | Direct-current voltage withstand test method after generator water collecting pipe is fixedly grounded |
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