CN203205318U - Transformer station 330 kV isolation switch moving contact - Google Patents
Transformer station 330 kV isolation switch moving contact Download PDFInfo
- Publication number
- CN203205318U CN203205318U CN 201320157646 CN201320157646U CN203205318U CN 203205318 U CN203205318 U CN 203205318U CN 201320157646 CN201320157646 CN 201320157646 CN 201320157646 U CN201320157646 U CN 201320157646U CN 203205318 U CN203205318 U CN 203205318U
- Authority
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- China
- Prior art keywords
- moving contact
- liner plate
- internal diameter
- transformer station
- pipe body
- 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
Links
- 238000002955 isolation Methods 0.000 title abstract description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model relates to a transformer station 330 kV isolation switch moving contact, based on the improvement of a GW7-330/1600 type isolation switch moving contact. The transformer station 330 kV isolation switch moving contact comprises a moving contact body fixedly provided with a hook dead lever; the head of the hook dead lever is provided with a position-restricted hook. The characteristics are that a pipe body end of the moving contact is equipped with a liner plate, the internal diameter of the liner plate being the same with the internal diameter of the pipe body; gap exists between the liner plate and the hook dead lever. The liner plate and the moving contact pipe body internal diameter are of clearance fit; the liner plate is of a T shape; a contact surface between the T-shaped liner plate and the pipe body internal diameter is provided with an arc matching with the pipe body internal diameter; lower ends of both wings of the T-shaped liner plate are clamped on an upper end surface of the moving contact pipe body. The transformer station 330 kV isolation switch moving contact meets system operation requirements, raises equipment operation reliability, prolongs the service life of equipment, improves stability, avoids and minimizes emergent and great forced stop defects, eliminates equipment inherent hidden dangers, raises equipment operation safety factor and provides reliable guarantees to electrical network safe and economic operation.
Description
Technical field
The utility model relates to a kind of isolating switch, and specifically a kind of 330kV of transformer station isolating switch moving contact is the improvement to GW7-330/1600 type isolating switch moving contact.
Background technology
West, the Lanzhou 330kV of transformer station isolating switch amounts to 37 groups, and that put into operation in 99 years has 26 groups, and what calendar year 2001 put into operation has 11 groups, and manufacturer is Shenyang high voltage switch gear factory, and product type is: the GW7-330/1600 type, call GW7 type isolating switch in the following text.West, Lanzhou transformer station is located in Shu Ping town, Yongdeng County, is chemical industry heavily contaminated district, Lanzhou herein, especially since two thousand seven, and the large and small brick field of continuous construction 26 families around transformer station, a large amount of SO of brick field discharging
2Gas forms in dark and damp or rainy day and is with corrosive acid rain, causes the corrosion of outdoor equipment burn into very serious.After the dynamic and static contact corrosion of GW7 type isolating switch, form corrosion layer at contact and conductive contact surfaces, make the contact-making surface roughening, it is big that contact resistance becomes, and produces cutout between contact, and the equipment operational reliability reduces.Simultaneously, moving contact is owing to frequent deciliter, and the external diameter before use the moving contact end is 76mm, and its external diameter is about 73mm after operation a period of time, and the moving contact contact-making surface has become ellipse by circle.Fingertip extension spring heating annealing, the fixed contact clamping force reduces, and temperature excursion between contact causes contact contact site scaling loss, and useful life is short, causes promptly, is forced to have a power failure, and is difficult to guarantee the normal operation of electrical network.From 2008 to 2010, change each 324 of dynamic and static contacts altogether, spend 1,600,000 yuan altogether, on average changing one group of dynamic and static contact needs 30,000 yuan.
Summary of the invention
The purpose of this utility model is the shortcoming that overcomes above-mentioned prior art, and a kind of 330kV of transformer station isolating switch moving contact that improves equipment operational reliability and useful life is provided; It can effectively prevent contact heating, cutout phenomenon, prevent branch, close phenomenon not in place and the rotating part bite, the hidden danger that abatement apparatus itself is intrinsic improves operation stability, avoid reducing urgent, the great generation of compeling to stop defective, guarantee the safe operation of electrical network.
In order to achieve the above object, the utility model adopts following technical scheme: a kind of 330kV of transformer station isolating switch moving contact, comprise the moving contact body, the moving contact body is installed with the hook fixed lever, hook fixed lever head end is provided with spacing hook, it is characterized in that: moving contact body end (being head end) is equipped with the liner plate identical with internal diameter of tube body, is provided with the space between liner plate and the hook fixed lever.
Liner plate and moving contact internal diameter of tube body matched in clearance; Liner plate is shaped as the T type, and the contact-making surface of T type liner plate and internal diameter of tube body is provided with arc, and arc and internal diameter of tube body are suitable, and T type liner plate both wings lower end is stuck in moving contact body upper surface.
GW7 type isolating switch is three post horizontally openable formula three-phase alternating current 50Hz outdoor high-voltage electrical equipment, under no current-carrying situation, carry out changing-over for high-tension line, and the usefulness of carrying out electrical isolation between electric equipment such as the high voltage bus that quilt is overhauled, circuit breaker and the charged high-tension line.Every group of GW7 type isolating switch is made up of three independent one poles.Each one pole is made up of base, insulation column, conducting system, operating mechanism and earthed switch.Conducting system is divided into conducting rod and fixed contact part; The conducting rod part is made up of conducting rod, moving contact, grading ring etc.; The fixed contact part is made up of fingertip, touch base, terminal block and cover.The utility model is the improvement to the moving contact of conducting rod part.Isolating switch operating principle: driven the power transmission shaft that is located at base by electric motor operating mechanism, the Rotate 180 degree, the four-bar linkage structure of forming by connecting lever and connecting rod drives intermediate insulation rotation 70 degree, so drive hook fixed lever horizontal direction rotation 70 degree, finishes breaking-closing operating.
Before transformation, we find that through the repeated measurement to the moving contact size external diameter before moving contact uses is 76mm, and its external diameter is about 73mm after operation a period of time, and the moving contact contact-making surface has become ellipse by circle.We think that moving contact uses its contact-making surface of back to become oval-shaped this alteration of form by circle, has caused the contact contact area to diminish, and causes loose contact, galvanic circle heating or cutout.We had once carried out reinstatement work repeatedly to moving contact, but after the long-time running, the situation of contact distortion can take place again, proved the generation again that only can't stop this type of defective by simple original state recovery.In order to make moving contact in long-term operation, keep original shape and size, be unlikely to distortion, we determine liner plate of increase in moving contact contact-making surface circle, the problem that solves that moving contact repeatedly divides, deforms behind the closing operation.We have carried out transforming forward and backward contact resistance test and operating temperature test to two groups of isolating switches.
One, the contact resistance test: the isolating switch of changing, newly installing, must carry out the technical indicator test to it, contact resistance value is an important technology index.Equally, we are that improved two groups of isolating switch moving contacts have carried out the contact resistance test to the utility model, and the test back finds that in the time, these two groups of isolating switches all do not produce heating and cutout phenomenon, and are stable at nearly 1 year observation experiment.Testing site 1 sees Table 1 with the forward and backward isolating switch contact resistance of the transformation test comparison data of testing site 2.Table 1 shows: the isolating switch moving contact before the prior art of two testing sites is namely transformed, its contact resistance value all do not reach standard-required, and contact resistance value test result of the present utility model meets standard-required.
Table 1 is transformed forward and backward isolating switch contact resistance test comparison
Its two, operating temperature test: we are to utilize the infrared imaging temperature measuring instrument to carry out temperature test after improved two groups of isolating switch moving contacts are installed to the utility model.Testing site 1 sees Table 2 with the forward and backward isolating switch temperature test of the transformation correction data of testing site 2, can see improved isolating switch temperature and reduce significantly than before transforming from the temperature-measuring results of table 2, the heating phenomenon do not occur.Table 2 proves that fully the utility model is that improved isolating switch contact is good, stable.
Table 2 is transformed forward and backward isolating switch infrared temperature test comparison (ambient temperature is 15 ℃)
Before using the utility model, west transformer station changed each 324 of dynamic and static contacts altogether from 2008 to 2010 Lanzhou, spent 1,600,000 yuan altogether, and on average changing one group of dynamic and static contact needs 30,000 yuan, yet the operation of equipment is held time and had only 6 months.Use the utility model, install, transform the moving contact only use and take about 1,000 yuan, operation hours can be kept more than 12 months, can save production cost more than 80 ten thousand yuan every year.
The utility model provides a kind of simple and practical 330kV of transformer station isolating switch moving contact, it does not change the original structure of moving contact, just at moving contact body end the liner plate identical with internal diameter of tube body is housed, being provided with the space between liner plate and the hook fixed lever, is simple and practical isolating switch moving contact improvement technology.Use the service requirement that the utility model has not only satisfied system, equipment reliability of operation and useful life have been improved, and improved stability, avoid reducing urgent, the great generation of compeling to stop defective, eliminated the intrinsic hidden danger of equipment itself, raising equipment operating safety factor, and then guaranteed the safe operation of electrical network; Also reduced the workload of repair and maintenance in addition, reduced enterprise's production cost, for the safety and economic operation of electrical network provides reliable guarantee, directly and indirect economic effect very considerable.
Description of drawings
Fig. 1 is front view of the present utility model,
Fig. 2 is the vertical view of Fig. 1,
Fig. 3 is the upward view of Fig. 1,
Fig. 4 is the structural representation of T type liner plate,
Fig. 5 is the left view of Fig. 4,
Fig. 6 is the vertical view of Fig. 4,
Fig. 7 is the front view of prior art,
Fig. 8 is the vertical view of Fig. 7.
Among the figure: 1-moving contact body, 2-hook fixed lever, 3-spacing hook, 4-liner plate, 5-moving contact body afterbody, 6-moving contact body end, E-space, B-moving contact body upper surface, D-moving contact body external diameter, d-moving contact internal diameter of tube body, L-T type liner plate upper end width, M-T type liner plate lower end width, H-T type liner plate height, P-T type liner plate thickness, h-T type liner plate both wings height.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3: a kind of 330kV of transformer station isolating switch moving contact, comprise moving contact body 1, moving contact body 1 is installed with hook fixed lever 2, hook fixed lever 2 head ends are provided with spacing hook 3, it is characterized in that: moving contact body end 6 is equipped with the liner plate identical with internal diameter of tube body 4, is provided with space E between liner plate 4 and the hook fixed lever 2.The effect of liner plate 4 is exactly to stop the distortion of moving contact because causing after repeatedly dividing, closing.
For slowing down the speed of T type liner plate 4 oxidation corrosions, be provided with the tin layer on T type liner plate 4 surfaces, namely be coated with one deck tin on T type liner plate surface.
During assembling, liner plate is perpendicular to moving contact datum level B, be moving contact body upper surface B, 5 perpendicular diameter places embed the moving contact inboard from top to bottom along moving contact body end and moving contact body afterbody, T type liner plate 4 both wings lower ends are closely contacted with moving contact datum level B, hard thing such as unavailable iron hammer is installed by force, in order to avoid cause the moving contact body distortion.T type liner plate embeds moving contact body end inwall from top to bottom firmly, and it is very convenient that T type liner plate is installed, and do not change the original structure of moving contact.
Shown in Fig. 7, Fig. 8 is original moving contact structure, and its moving contact body 1 is installed with hook fixed lever 2, and hook fixed lever 2 head ends are provided with spacing hook 3.Moving contact body D outer diameter is 76mm before using, and its external diameter is about 73mm after operation a period of time, and the moving contact contact-making surface has become ellipse by circle.
Claims (4)
1. the 330kV of transformer station isolating switch moving contact, comprise the moving contact body, the moving contact body is installed with the hook fixed lever, hook fixed lever head end is provided with spacing hook, it is characterized in that: moving contact body end (6) is equipped with the liner plate identical with internal diameter of tube body (4), is provided with space (E) between liner plate and (4) the hook fixed levers (2).
2. a kind of 330kV of transformer station isolating switch moving contact as claimed in claim 1, it is characterized in that: liner plate (4) is the T type, T type liner plate (4) is provided with arc with the contact-making surface of internal diameter of tube body, arc and internal diameter of tube body are suitable, and T type liner plate (4) both wings lower end is stuck in moving contact body upper surface (B).
3. a kind of 330kV of transformer station isolating switch moving contact as claimed in claim 2, it is characterized in that: T type liner plate (4) surface is provided with the tin layer.
4. a kind of 330kV of transformer station isolating switch moving contact as claimed in claim 3 is characterized in that: T type liner plate (4) the copper plate making identical with the moving contact material; T type liner plate upper end width (L) is 76mm, and T type liner plate lower end width (M) is 66mm, and T type liner plate height (H) is 108mm, and T type liner plate thickness (P) is 8mm, and T type liner plate both wings height (h) are 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320157646 CN203205318U (en) | 2013-04-01 | 2013-04-01 | Transformer station 330 kV isolation switch moving contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320157646 CN203205318U (en) | 2013-04-01 | 2013-04-01 | Transformer station 330 kV isolation switch moving contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205318U true CN203205318U (en) | 2013-09-18 |
Family
ID=49149400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320157646 Expired - Fee Related CN203205318U (en) | 2013-04-01 | 2013-04-01 | Transformer station 330 kV isolation switch moving contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203205318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198962A (en) * | 2013-04-01 | 2013-07-10 | 甘肃省电力公司检修公司 | Moving contact of 330kV isolating switch of converting station |
-
2013
- 2013-04-01 CN CN 201320157646 patent/CN203205318U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198962A (en) * | 2013-04-01 | 2013-07-10 | 甘肃省电力公司检修公司 | Moving contact of 330kV isolating switch of converting station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: MAINTENANCE COMPANY OF GANSU ELECTRIC POWER COMPANY Effective date: 20131108 Owner name: GANSU PROV. ELECTRIC POWER CO. MAINTENANCE COMPANY Effective date: 20131108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 730050 LANZHOU, GANSU PROVINCE TO: 100031 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131108 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Gansu Electric Power Corporation Patentee after: Maintainance Company of Gansu Electric Power Corporation Address before: 730050 Gansu Province, Lanzhou city Qilihe District Portland Road No. 358 Patentee before: Maintainance Company of Gansu Electric Power Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |