CN2266133Y - Device for quick measuring resistance between armature vertical lamination for DC exciter - Google Patents
Device for quick measuring resistance between armature vertical lamination for DC exciter Download PDFInfo
- Publication number
- CN2266133Y CN2266133Y CN 96235296 CN96235296U CN2266133Y CN 2266133 Y CN2266133 Y CN 2266133Y CN 96235296 CN96235296 CN 96235296 CN 96235296 U CN96235296 U CN 96235296U CN 2266133 Y CN2266133 Y CN 2266133Y
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- current
- exciter
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model relates to a quick measuring device for resistance between the armature vertical laminations of a DC exciter. The utility model is composed of a measuring carbon brush, a constant-current power supply, an amplifier for current and voltage, a digital-to-analog converter, a calculating device, etc., wherein, the measuring carbon brush slides over the commutator segment of the exciter, and outputs the measured signals of the current and the voltage via the calculation and the processing of a single-chip computer. When doing measurement, the utility model is also provided with photoelectric positioning to determine metered alpha and omega; with the utility model, an exciting body can be rotated with one circle when a vehicle is turned, and thus the data of the resistance between the armature vertical laminations can be obtained quickly.
Description
DC exciter armature riser bar to bar resistance rapid measurement device, the utility model belongs to electric signal measurement instrument field, refers in particular to the measurement mechanism of the continuous fast measuring resistance value of a kind of energy.
The golden portion output power of DC exciter armature plate carrying exciter.Under heating power, electric power and the effect of high speed centrifugation power, owing to reasons such as welding technologys, the accident that the armature riser snaps happens occasionally, and directly has influence on the stable operation of generator.Measuring the riser bar to bar resistance, is the effective way of judging the riser welding quality.
Measure bar to bar resistance, now common electric bridge method or current and voltage method.Bridge method is during operating cost; Current and voltage method must guarantee current constant.More than two kinds of methods all must be with two probe galvanizations, two probe power takings pressures, this is the hardest thing.Particularly when the exciter guard shield was not opened, brush holder was in the way, and the tester is crowded together, and it is very inconvenient to work.An exciter has up to a hundred armature risers, and the exciter on the hydraulic turbine then reaches 600 multi-discs.Quite time-consuming hard during test.
At the problems referred to above, the purpose of the utility model is the device that proposes a kind of quick measurement exciter bar to bar resistance.Utilize the jiggering process, the riser of rotation is inswept special-purpose carbon brush is obtained the current/voltage value of each sheet, and the current/voltage value input computing machine that records is carried out calculation process, like this, can obtain every sheet resistance value of exciter armature riser when only needing jiggering once the time of circle.
The purpose of the utility model is achieved by the following scheme: by constant-current supply, shunt, electric current, voltage amplifier, analog to digital converter, arithmetical unit, keyboard, display, measure compositions such as carbon brush and photoelectricity alignment sensor, it is characterized in that: measure carbon brush and be installed on the excitation brush holder, carbon brush end face width is greater than 2 times of furrow widths, and is wide less than 1/4, a pair of carbon brush and constant-current supply, the shunt current amplifier joins, and another joins to carbon brush and voltage amplifier, and the signal of current amplifier and voltage amplifier send arithmetical unit to handle through analog to digital converter, result is by display, printer output.
Accompanying drawing and drawing explanation:
Accompanying drawing is the utility model one-piece construction figure.
1---measure carbon brush; 2---reflecting piece; 3---photoelectric sensor;
4---constant-current supply; 5---shunt; 6---current amplifier;
7---voltage amplifier; 8---electronic switch; 9---analog to digital converter;
10---arithmetical unit; 11---keyboard; 12---display;
13---printer.
The utility model is described in further detail below in conjunction with accompanying drawing drawing explanation and embodiment: the utility model is when enforcement, it is corresponding respectively to measure carbon brush, every group two carbon brush are across between adjacent two commutators, the end face width that carbon brush contacts with commutator is greater than 2 times of furrow widths, wide less than 1/4, measure the acute and constant-current supply 4 of carbon for one group, shunt 5 current amplifiers 6 join; Another organizes measurement carbon brush and voltage amplifier 7 joins, and measuring-signal is delivered to analog to digital converter 9 and changed the back by arithmetical unit 10 processing behind electronic switch 8, controls, can the effect certificate output to display 12 or printer 13 by keyboard 11.When implementing to measure, stick a slice reflecting piece 2 in the appropriate location of exciter shaft, and establish photoelectric sensor 3 at correspondence position, when exciter rotates a circle, photoelectric sensor 3 is obtained a pulse signal, send arithmetical unit, rotates the beginning and end position of a circle as the record exciter.
In sum, the utility model remains the current-voltage measurement method that adopts, make things convenient for the data contrast to judge, its main advantage is to send MICROCOMPUTER PROCESSING with the data that record automatically, also has the photosignal location simultaneously, definite measurement begins and finishes, and can eliminate the operate miss of hand dipping basically in whole measuring process, is not only quick, laborsaving, but also the new device accurately of a cover.
Claims (1)
- Resistance is measured fast between DC exciter armature riser, be by constant-current supply, shunt, electric current, voltage amplifier, analog to digital converter, arithmetical unit, keyboard, display is measured compositions such as carbon brush and photoelectricity alignment sensor, it is characterized in that: measure carbon brush and be installed on the excitation brush holder, carbon brush end face width is greater than 2 times of furrow widths, less than 1/4 wide, a pair of carbon brush and constant-current supply, the shunt current amplifier joins, another joins to carbon brush and voltage amplifier, the signal of current amplifier and voltage amplifier send arithmetical unit to handle through analog to digital converter, and result is by display, printer output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235296 CN2266133Y (en) | 1996-07-19 | 1996-07-19 | Device for quick measuring resistance between armature vertical lamination for DC exciter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235296 CN2266133Y (en) | 1996-07-19 | 1996-07-19 | Device for quick measuring resistance between armature vertical lamination for DC exciter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2266133Y true CN2266133Y (en) | 1997-10-29 |
Family
ID=33911393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96235296 Expired - Fee Related CN2266133Y (en) | 1996-07-19 | 1996-07-19 | Device for quick measuring resistance between armature vertical lamination for DC exciter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2266133Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881807A (en) * | 2021-01-08 | 2021-06-01 | 大唐长春第二热电有限责任公司 | Generator rotor loop resistance and carbon brush loop resistance measuring tool and method |
-
1996
- 1996-07-19 CN CN 96235296 patent/CN2266133Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881807A (en) * | 2021-01-08 | 2021-06-01 | 大唐长春第二热电有限责任公司 | Generator rotor loop resistance and carbon brush loop resistance measuring tool and method |
| CN112881807B (en) * | 2021-01-08 | 2023-11-14 | 大唐长春第二热电有限责任公司 | Tool and method for measuring loop resistance and carbon brush loop resistance of generator rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |