CN204008807U - A kind of generator unit stator slot for winding current potential detector - Google Patents
A kind of generator unit stator slot for winding current potential detector Download PDFInfo
- Publication number
- CN204008807U CN204008807U CN201420385499.8U CN201420385499U CN204008807U CN 204008807 U CN204008807 U CN 204008807U CN 201420385499 U CN201420385499 U CN 201420385499U CN 204008807 U CN204008807 U CN 204008807U
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- CN
- China
- Prior art keywords
- thin slice
- copper thin
- soft copper
- base plate
- bakelite base
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model discloses a kind of generator unit stator slot for winding current potential detector, comprise bakelite base plate, soft copper thin slice, insulation stock, bolt screw rod and test lead, the width of described soft copper thin slice and bakelite base plate equal in length, after soft copper thin slice closely wraps up bakelite base plate, close up and reserve at center line of bakelite base plate and overlap termination, described insulation stock one end is connected by bolt and nut with the overlap joint termination of soft copper thin slice, with the T-shaped structure of the common formation of bakelite base plate, described test lead one end is connected with soft copper thin slice, and the other end connects voltage table.The beneficial effects of the utility model are: in the time measuring, have that contact is good, stressed evenly, slippage is convenient, an advantage such as Damage to insulation not, test number is accurate, safe and reliable; Insulation stock strengthens the insulation distance between user and line rod, and security improves.
Description
Technical field
The utility model relates to technical field of hydraulic generators, and particularly a kind of generator unit stator slot for winding current potential detector is applicable to the surface groove potential measurement test after generator unit stator winding bar rule.
Background technology
In big-and-middle-sized high-voltage generator, the line rod quantity of stator winding is many, and after on-the-spot rule, upper and lower layer line rod affects greatly in the operating life-span of high voltage hydrogenerator with the clamping quality of iron core cell wall.If the excesssive gap of upper and lower layer line rod and iron core cell wall, will cause the current potential between line rod and iron core cell wall to increase, cause spark discharge, produce " electrocorrosion ", and then affect the major insulation life-span, jeopardize hydrogenerator safe and stable operation.
Along with the single-machine capacity of hydrogenerator in hydroelectric project increases, quantity is corresponding increases for the line rod of stator winding, and the rated voltage of hydrogenerator is corresponding improve also, and the surface groove potentiometric detection of line rod seems further important.GB and generator are manufactured producer and are all specified, the line rod of stator winding after setting-in, generally should be under specified phase voltage surface groove current potential or the cell resistance of slotted line rod, groove current potential generally should be less than 10V or meet manufacturing plant's requirement.
For the operation of measuring flume current potential, there is no at present specific purpose tool.Conventionally adopt the expedients such as test pencil or probe (rod) to measure, the shortcomings such as sharp point contact exists that surface of contact is little, the insulativity of unbalance stress, safe distance deficiency, easy damaged line rod, test result is inaccurate.
Utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of generator unit stator slot for winding current potential detector, have the features such as simple in structure, conduction is good, simple operation, safety economy practicality.
The technical solution adopted in the utility model is such:
A kind of generator unit stator slot for winding current potential detector, comprise bakelite base plate, soft copper thin slice, insulation stock, bolt and nut and test lead, the width of described soft copper thin slice and bakelite base plate equal in length, after soft copper thin slice closely wraps up bakelite base plate, close up and reserve at center line of bakelite base plate and overlap termination, described insulation stock one end is connected by bolt and nut with the overlap joint termination of soft copper thin slice, with the T-shaped structure of the common formation of bakelite base plate, described test lead one end is connected with soft copper thin slice, and the other end connects voltage table.
As preferably, described bakelite base plate is insulation material rectangular slab, and length is 8-10cm identical with soft copper sheet width.
As preferably, the overlap joint termination length that described soft copper thin slice reserves is 5cm.Overlap joint termination is for being connected with insulation stock.
As preferably, described insulation stock is two T-shaped epoxy plates compositions, and its termination is connected with the overlap joint termination of soft copper thin slice by bolt and nut.
As preferably, two T-shaped epoxy plates of described insulation stock are clipped in the middle the bond end head of soft copper thin slice, and the termination of described test lead is sandwiched in the middle of the overlap joint termination of soft copper thin slice, compresses by bolt and nut.Like this simple and compact for structure, the termination of test lead is not easy to come off, safe.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are: in the time measuring, have that contact is good, stressed evenly, slippage is convenient, an advantage such as Damage to insulation not, test number is accurate, safe and reliable; Insulation stock has increased the insulation distance between user and line rod, safe.
Brief description of the drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is vertical view of the present utility model.
Fig. 3 is the schematic diagram that the utility model carries out groove potential test.
Mark in figure: 1 is bakelite base plate, 2 is soft copper thin slice, and 3 is insulation stock, and 4 is bolt and nut, and 5 is test lead, and 6 is line rod, and 7 is slot wedge bed course, and 8 is siliconized plate.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, a kind of generator unit stator slot for winding current potential detector, comprise bakelite base plate 1, soft copper thin slice 2, insulation stock 3, bolt and nut 4 and test lead 5, the width of described soft copper thin slice 2 and bakelite base plate 1 equal in length, after soft copper thin slice 2 closely wraps up bakelite base plate 1, close up and reserve at 1 one center lines of bakelite base plate and overlap termination, described insulation stock 3 one end are connected by bolt and nut 4 with the overlap joint termination of soft copper thin slice 2, with the T-shaped structure of bakelite base plate 1 common formation, described test lead 5 one end are connected with soft copper thin slice 2, the other end connects voltage table.
Described bakelite base plate 1 is insulation material rectangular slab, and length is 8-10cm identical with soft copper thin slice 2 width.
The overlap joint termination length that described soft copper thin slice 2 reserves is 5cm.
As shown in Figure 2, described insulation stock 3 is two T-shaped epoxy plate compositions, and its termination is connected with the overlap joint termination of soft copper thin slice 2 by bolt and nut 4.Two T-shaped epoxy plates of described insulation stock 3 are clipped in the middle the bond end head of soft copper thin slice 2, and the termination of described test lead 5 is sandwiched in the middle of the overlap joint termination of soft copper thin slice 2, compresses by bolt and nut 4.
When the utility model is applied in groove potential measurement, bakelite base plate 1 outside that is surrounded by soft copper thin slice 2 is attached to line rod 6 positions, Zhai Bian upper, middle and lower, side in generator unit stator slot for winding by hand-held insulation stock 3, the voltage input end of the voltage table of test lead 5 external paramount internal resistances, voltage table other end ground connection.
When test, between online rod 6 and siliconized plate 8, apply rated voltage, filling slot wheel chock layer 7 between line excellent 6 and siliconized plate 8, as shown in Figure 3.Alternative line rod 6 Zhai Bian upper, middle and lower, side portion 3 points, touch insulation stock 3 respectively to line rod 6, bakelite base plate 1, soft copper thin slice 2 are contacted well with the side surface of line rod 6, and the voltage table indicated value that reads high internal resistance is line rod surface groove potential value.Also can be by the upper and lower slippage in narrow limit of the online rod 6 of the utility model, conveniently choose other site tests point sampling observation and measure.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a generator unit stator slot for winding current potential detector, it is characterized in that: comprise bakelite base plate (1), soft copper thin slice (2), insulation stock (3), bolt and nut (4) and test lead (5), the width of described soft copper thin slice (2) and bakelite base plate (1) equal in length, after soft copper thin slice (2) closely wraps up bakelite base plate (1), close up and reserve at (1) center line of bakelite base plate and overlap termination, described insulation stock (3) one end is connected by bolt and nut (4) with the overlap joint termination of soft copper thin slice (2), jointly form T-shaped structure with bakelite base plate (1), described test lead (5) one end is connected with soft copper thin slice (2), the other end connects voltage table.
2. a kind of generator unit stator slot for winding current potential detector according to claim 1, is characterized in that: described bakelite base plate (1) is insulation material rectangular slab, and length is 8-10cm identical with soft copper thin slice (2) width.
3. a kind of generator unit stator slot for winding current potential detector according to claim 2, is characterized in that: the overlap joint termination length that described soft copper thin slice (2) reserves is 5cm.
4. according to a kind of generator unit stator slot for winding current potential detector described in claim 1,2 or 3, it is characterized in that: described insulation stock (3) is two T-shaped epoxy plate compositions, and its termination is connected with the overlap joint termination of soft copper thin slice (2) by bolt and nut (4).
5. a kind of generator unit stator slot for winding current potential detector according to claim 4, it is characterized in that: two T-shaped epoxy plates of described insulation stock (3) are clipped in the middle the bond end head of soft copper thin slice (2), the termination of described test lead (5) is sandwiched in the middle of the overlap joint termination of soft copper thin slice (2), compresses by bolt and nut (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385499.8U CN204008807U (en) | 2014-07-14 | 2014-07-14 | A kind of generator unit stator slot for winding current potential detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385499.8U CN204008807U (en) | 2014-07-14 | 2014-07-14 | A kind of generator unit stator slot for winding current potential detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008807U true CN204008807U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420385499.8U Expired - Fee Related CN204008807U (en) | 2014-07-14 | 2014-07-14 | A kind of generator unit stator slot for winding current potential detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548953A (en) * | 2018-06-13 | 2018-09-18 | 中国长江电力股份有限公司 | A kind of turbine generator stator bar slot potential measurement method and device |
| CN110632513A (en) * | 2019-08-19 | 2019-12-31 | 华电电力科学研究院有限公司 | Generator stator slot anti-corona layer potential measuring device and measuring method |
-
2014
- 2014-07-14 CN CN201420385499.8U patent/CN204008807U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548953A (en) * | 2018-06-13 | 2018-09-18 | 中国长江电力股份有限公司 | A kind of turbine generator stator bar slot potential measurement method and device |
| CN110632513A (en) * | 2019-08-19 | 2019-12-31 | 华电电力科学研究院有限公司 | Generator stator slot anti-corona layer potential measuring device and measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA GEZHOUBA GROUP MECHANICAL + ELECTRICAL CONST Free format text: FORMER NAME: GEZHOUBA GROUP MECHANICAL + ELECTRICAL CONSTRUTION CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610091 Sichuan City, Qingyang Province, into the District of Chengdu Road, No. 1 Industrial headquarters base A District, building 4 Patentee after: Gezhouba Group Mechanical & Electrical Constrution Co., Ltd. of China Address before: 610091 Sichuan City, Qingyang Province, into the District of Chengdu Road, No. 1 Industrial headquarters base A District, building 4 Patentee before: Gezhouba Group Mechanical & Electrical Constrution Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |