CN2071344U - Measuring electrode of insulation oil and temp. controlling system of heating basin - Google Patents
Measuring electrode of insulation oil and temp. controlling system of heating basin Download PDFInfo
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- CN2071344U CN2071344U CN 90202295 CN90202295U CN2071344U CN 2071344 U CN2071344 U CN 2071344U CN 90202295 CN90202295 CN 90202295 CN 90202295 U CN90202295 U CN 90202295U CN 2071344 U CN2071344 U CN 2071344U
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- electrode
- oil
- heating bath
- controlling mechanism
- bath temperature
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Abstract
The utility model discloses a measuring electrode of insulation oil and temp and a temperature controlling system of heating basin, relating to the technical field of electrotechnics, mechanics and thermology. The utility model is the necessary equipment for the electrical property test of transformer oil, switch oil, capacitor oil, cable oil, etc. Which are largely used in the electrician industry. However, the shell simple electrode (an oil cistern for short) made in 1950's to 1960's or the three electrode structure products completely counterfeiting the foreign products made in 1970 s are even used in China until now. The utility model provides a completely new oil cistern of cylindrical form three electrode structure by the originality of the body of the electrode structure, the insulating localization, the fine lock, the wiring, the oil receiving tray, thermostat, etc. The utility model can completely achieve the level of the modern international akin products.
Description
This utility model relates to electrotechnics, machinery and calorifics.
The kind of insulating material is a lot, generally can be divided into three kinds of solid, liquids and gases.With regard to liquid insulating material, commonly used have transformer oil, circuit-breaker oil, condenser oil, cable wet goods mineral oil; Synthetic oils such as dodecyl benzene, silicone oil and trichloro biphenyl.
Adopt the electric product quality and the serviceable life of above-mentioned insulating material, depend on electricity, heat and the physicochemical property of insulating oil to a great extent.For this reason, country is to the far-reaching loss factor tg σ of insulating oil electrical property, relative dielectric constant ε, and specific insulation Pv etc. has formulated the YS-3D-1-84 standard with reference to International Electrotechnical Commission's 1EC-247 proposed standard.Clearly stipulate in the standard, when precision measurement, adopt the electrode of three-electrode structure.
New national standard issued, yet domesticly also generally using five so far, the simple and easy electrode of shell in the sixties.The eighties is initial, the domestic three-electrode structure electrode (abbreviation lubricating cup) that Switzerland's product occurred copying fully.
For studying this problem, electric insulating oil loss determination instrument DAC-10-D1 instructions, Switzerland Tettes company 2903 type electrode instructionss, the Soviet Union that electric system oil test method (hydraulic and electric engineering publishing house in 1984), the 1EC-247 of International Electrotechnical Commission publication, Japan's system are ground Electric Co., Ltd have extensively been collected and have consulted
, work electrical apparatus insulation material test (China Machine Press in 1988) such as M, Ke Chanuo Paderewski, motor engineering handbook the 7th～8 piece of (China Machine Press in 1978), electrical insulation testing technology (Xi'an Communications University compiles, China Machine Press May nineteen eighty-three) electrical measurement and instrument magazine document and data such as (1987 the 5th phases).
Sum up, lubricating cup essence is exactly to be the accurate electric capacity container of medium with oil, and the edge between two battery lead plates is provided with screening electrode (also claiming the protection utmost point), to eliminate the influence of stray capacitance to main capacitance, improves measuring accuracy.The maximum permissible voltage that distance between the pole plate has applied when having determined test.As stipulating clearly that in standard every millimeter does not allow to surpass 1KV.On concrete enforcement, various countries make and use the lubricating cup of various spline structure from applicability, science, standard, processability and aesthetic property equal angles on the basis of different development in science and technology levels and process mating ability.Contrast by analysis thinks that Switzerland and two kinds of electrode structural designs of Japan are ingenious, representative.
Switzerland Tettex Instruments 2903 type lubricating cups are that the 2821 type electric bridges of producing for the said firm are supporting.This electric bridge resolution very high (1 * 10
-5), electrode gap is 2 millimeters, bridge test voltage just can be tested lubricating cup less than 2KV.This lubricating cup is the three-electrode structure that garden post and taper combine, and global design is tight, compact; Adopt six porcelain knobs to insulate respectively and supported guard electrode, test electrode and high-field electrode.Part all can be unpicked and washed equipment at any time except that the wiring plug-in unit, once be subjected to R﹠D institution's welcome that domestic part is introduced instrument.But because quality big (about 4kg), the big user of test job amount is felt too heaviness, unpicks and washes part many (12) and feel trouble.The processing technology level is very high, the electrode parameter that two cover three-point fix porcelain knobs and pilot hole thereof, location eccentricity chute, internal and external electrode cone-shaped body gap etc. are constituted between three electrodes particularly, guarantee by Geometrical Tolerance Principle in the disposable machining entirely, this difficulty concerning general enterprise working condition is big, is difficult to reach external model machine level.
The SDKEN loss determination instrument DAC-01-D1 resolution that Japan's system grinds Electric Co., Ltd's production is higher by (1 * 10
-6), supporting DAC-DBE-1 type liquid electrode is a garden tubular three-electrode structure, and the gap is 1 millimeter, and voltage just can be tested less than 1KV.It is by six A of two covers, 120 degree five equilibriums and six C insulating bases with screw respectively with battery lead plate A and battery lead plate B positioning and fixing on mechanism's plate, electrode container A is tightened on the battery lead plate B, electrode container B is tightened on the battery lead plate A; Above-mentioned general name is put in the shell.The show of entire electrode structure is skilful, wall is thin and light, unpick and wash part few (4), the processing technology difficulty is easier than Switzerland.Yet when the kind electrode structure was increased to 2～3 millimeters in the gap, test caused unnecessary waste greatly with oil mass, should not adopt.
At present, China's insulating oil test supporting testing tool that industry had mostly is a high-tension bridge, and resolution is all low by (1 * 10 than above-mentioned
-4), guarantee that as QS3 type high-tension bridge the minimum trial voltage of sensitivity should be not less than 3KV, thus be fit to the electrode gap of current national conditions get 3 millimeters quite a lot of, but consider the development and the modern world level of testing tool, 2～3 millimeters lubricating cups all can be produced.
This utility model is exactly to be fit to national conditions and to meet international 1EC-247 publication and the novel lubricating cup pattern of GB YS-3D-1-84 requirement for solving the problem of above-mentioned existence, releasing.
From last surface analysis, can conclude that the locator meams of Japanese lubricating cup has its points of course, it is advantage that Switzerland's high-field electrode double as lubricating cup shell can reduce electrode part quantity, cylindrical electrode part in garden is desirable again.Through repeatedly conceiving intention, broken through the obstacle that Japanese high-field electrode separates with shell, overcome mechanism's plate and located weak points such as the internal and external electrode plate not too firmly and not is incubated by insulating base A, B, C up and down, finished following detail of design.
This utility model is the garden cylindricality three-electrode structure lubricating cup that is made of external electrode and the electrode cores general name that is inserted in the inside generally.Below, contrast accompanying drawing one describes.
External electrode one symmetrical high-field electrode (1-1) is the cup shell that top slightly becomes step, the double as electrode shell.Inner bottom is that taper surface or plane and sidewall all are the significant surfaces of electrode plate with high voltage, and the pole-face upper edge exceeds 1 millimeter on step, flows in the pole-face to prevent dirt.M4 lock-screw hole is opened at step sidewall middle part, and near the following oil outlet (1-15) of opening φ 1.2, the step inner chamber is the cavity volume of electrode cores subassembly.Open spill alignment grooves (1-16) in the step exterior bottom, cooperate with the inboard boss contraposition of the oil drain pan on the heating bath.
Lock-screw (1-14) external diameter be φ 14, open bid in the outer part at its end face and show the annular shallow slot of wiring meaning, coating Red lacquer in the groove along being 1.6 millimeters of end face middle part epireliefs, is opened the hole φ 4.2 that inserts the high-voltage connection plug in the inboard of groove at the center.Lock-screw withstands on the annular locking groove of dispatch from foreign news agency polar ring lateral surface, to tighten up the electrode cores general name by the lock-screw hole on the external electrode.
The pole piece plate be the electrode cores general name by dress matrix (1-3), except external electrode and lock-screw, other all electrode parts all are combined on this substrate, form electrode cores integral body.On the shape pole piece plate face of garden; open 4 φ, 12 location wiring holes by 120 degree and 60 degree equal indicative lines and external electrode location loop wire (1-20) infalls, open the guard electrode binding post rivet hole that 4 φ 12 locate wiring holes and 1 φ 4 with interior positioning of electrode loop wire (1-19) infall.Placement positioning insulating mat (1-8) on these 8 φ 14 holes reaches interior electrode (test) binding post (1-11) with 6 dog screws (1-13) and 2 external electrodes (high pressure) binding posts (1-11) following outer, interior electrode retaining collar is fixed on the pole piece plate by dual location and electric insulation outer, interior location insulating base.Pole piece plate bottom cylindrical portion is guard electrode (claiming guarded electrode again).On the guard electrode tube, open 2 φ, 2 symmetrical air holes (1-18) from 12 millimeters places of root.
Dispatch from foreign news agency polar ring (1-4) is the annular solid that the top evagination forms step.External diameter and the external electrode upper step madial wall of bottom ring are slidingly matched, and guaranteeing the concentricity between electrode cores integral body and external electrode, and establish the annular locking groove (1-21) of R5 on wall, and be corresponding with lock-screw hole in the middle part of the external electrode step sidewall.Electrode cores is inserted spacing assurance the in the outer electrode retaining collar upper boss of degree of depth rank in the external electrode.On step surface, with the corresponding M4 screw of not revealing the exact details of opening of 4 pilot holes on the external electrode location loop wire (1-20) on the pole piece plate face.
Interior electrode retaining collar (1-5) is the annular solid of step in the band, open on the interior step surface of ring with the pole piece plate in the corresponding M4 screw in 4 holes on the positioning of electrode loop wire (1-19), electrode was used in the M47 spiral shell button of bottom was fixing.
Outside fix insulating base (1-6) is the annular solid of the outer step of band.The external diameter appropriateness wringing fit of internal diameter and guard electrode tube, the step place is the positioning seat of dispatch from foreign news agency polar ring.It plays electric insulation effect and heat-insulation and heat-preservation effect between pole piece plate and the dispatch from foreign news agency polar ring again, makes the heat in the electrode be difficult for scattering and disappearing by this zone.
Interior location insulating base (1-7) is the annular solid of step in the band, the internal diameter appropriateness wringing fit of its external diameter and guard electrode tube, and interior electrode retaining collar sits on this interior step, location, insulation and the heat-insulation and heat-preservation effect of electrode retaining collar in playing.
On the step surface of above-mentioned outer, interior location insulating base, respectively open with the pole piece plate on the corresponding dog screw perforation of pilot hole on outer, the interior location loop wire (1-20,1-19).
Interior electrode-claim that again all outer surfaces of test electrode (1-2) all is the battery lead plate face, bottom taper surface quite a lot of (designs of this pattern) also can be flat.Coelosis is emptied in inside, in the interior spiral shell button M47 by top is tightened on the electrode retaining collar.
On the pole piece plate, by the brachmorphy symmetry handle (1-9) of adorning two band φ 16 holes, thumb and forefinger head just withstand on is convenient to pick up plug electrode core body on this symmetrical holes.
Handle (1-10) is that the elastic stainless steel silk with φ 2 surrounds half ellipse garden shape, curves for a short time in its both side ends and colludes.Spreading puts in and catches in the hole of two symmetrical handle lower end φ 2.4 and mentions or the traveling electrode body under the effect of elastic force.Temperature is difficult to directly pick up the handle traveling electrode with hand up to more than 90 degree behind the general electrode body examination oil, has had this handle just more convenient.
The terminals place diameter of binding post (1-11,12) is φ 14, at the annular shallow slot (1-17) that its end face is opened bid in the outer part and shown the wiring meaning, is 1.6 millimeters of end face middle part epireliefs on the edge, inboard of groove, and the heart is opened the deep hole φ 4.2 of patch plug therein.The annular table of this protrusion has strengthened the vision difference and the aesthetic property of spigot.Can inlay or be coated with the ring or the lacquer of different colours in the groove, high tension terminal redness, calibrating terminal are blue look.
The quality of temperature control heating bath performance concerns the homogeneity of temperature in electrode programming rate and the electrode body, directly influences the accuracy and the repeatability of test data.Here most critical is heating bath and temperature-controlling mechanism.Below, contrast accompanying drawing two describes.
Heating bath in this utility model is the general name that the top of tubular cartridge heater (2-2) is strengthened into flute profile oil drain pan (2-1).It can connect deposits the oil that the oil in the electrode overflows from the oil outlet on the external electrode because of thermal expansion.The inboard boss of groove exceeds 4 millimeters than the outside, and by spaced apart 24 air channels of 48 five equilibriums (2-7), and this boss just in time cooperates with alignment grooves activity on the external electrode, when in a single day electrode puts into heating bath, lubricating cup just automatically contraposition on center line.At the cartridge heater outer wall, be through in 6 layers of hole that surround by 18 fire-bars with 600 watts of heating wire, reach the purpose that lubricating cup is evenly heated up and down all around.
Temperature-controlling mechanism is the temperature control dish (2-3) that has heat absorbing sheet, and the lower end extends into tubulose, is inserted in the hole that is slidingly matched of cartridge heater bottom (2-5), and tube is the effect of flexible spring (2-4) power outward, and the temperature control dish just is adjacent on the lubricating cup base plane automatically.Temperature control probe (2-6) is inserted in this extension, the temperature of just detectable electrode bottom and control heating power.
This utility model lubricating cup meets international 1EC-247 publication and GB YS-3D-1-84 requirement fully.If can guarantee to select for use on the material high-quality stainless steel and teflon, in the time making meticulously on the lathe of degree of precision and milling machine aspect the processing, comprehensive technical performance can reach the level of state's like products such as Switzerland, Japan and the Soviet Union fully.
Empty cup (not charge of oil) parameter reaches following value:
Electrode gap
 |
Electric capacity (PF) | Withstand voltage (KV) | Loss (tg σ) | The formation testing amount
 |
| 2 | 60±5 | 2.4 | ≤3×10 -5 | 40 |
| 3 | 50±4 | 3.6 | ≤3×10 -5 | 70 |
Electrode weight :≤2kg
The temperature control heating bath heating-up time:
Ring temperature was to 90 degree (oil-filled) 40～60 minutes
Promptly consider weight reduction in the electrode global design, considered the intensity (long-time stability that keep electrode parameter) of other parts again carefully.Electrode is very flexible, when needing only two accessory size slight variations of internal and external electrode, just can realize the change between electrode gap is from 1 millimeter to 3 millimeters.Unpick and wash parts minimum (3), easy and simple to handle.The dual positioning action that interior outside fix insulating base in the electrode is risen can make electrode parameter more stable, and the heat-insulation and heat-preservation effect that it plays is favourable to the homogeneity that improves electrode body programming rate and temperature.The oil drain pan of heating bath upper end can make the heating bath face keep clean, and is difficult for causing and smolders and fire.Temperature-controlling mechanism can use the lubricating cup (gap not simultaneously, lubricating cup length is not different yet) of two kinds of electrode gaps in a heating bath, made things convenient for the user.The pattern of binding post and handle increases the New Times sense of lubricating cup undoubtedly, needn't resemble some domestic and international lubricating cup with specific purpose tool or with long provoking electrode body in the screwdriver reeve upper hole.Above-mentioned these aspects are that state lubricating cup institutes such as Switzerland, Japan are incomparable.
Aspect processing and manufacturing, three interelectrode concentricitys can suitably be adjusted in assembling by parts such as dog screws and improve the tolerance of bringing aspect the machining.The design's pattern battery lead plate bottom is a taper surface, also can be planar shaped; Planar shaped is easy to processing than cone-shaped body and measures, and above-mentioned these aspects meet the existing technical equipment situation of China enterprise, can reach designing requirement.
Claims (8)
1, in a kind of insulating oil potential electrode and the heating bath temperature-controlling mechanism, its insulating oil potential electrode is the accurate garden cylindricality three terminal capacitor electrode that the liquid insulating medium electrical property detects, this electrode is by external electrode (1-1) and what be inserted in the inside be the electrode cores general name formation of matrix with pole piece plate (1-3), this electrode is placed on and carries out the temperature control heating on the heating bath temperature-controlling mechanism of being made up of cartridge heater (2-2) and temperature control dish (2-3) etc., the utility model is characterized in that dispatch from foreign news agency polar ring (1-4) is through outside fix insulating base (1-6), interior electrode retaining collar (1-5) through interior location insulating base (1-7) by 4 cover location insulating mats and dog screw and binding post (1-11) positioning and fixing separately on pole piece plate (1-3), this electrode cores general name slightly becomes the last cavity wall of cup shell external electrode (1-1) of step to be slidingly matched by dispatch from foreign news agency polar ring (1-4) and top, and it is directed and locking by lock-screw (1-14), handle (1-10) is half ellipse garden shape and is colluding under the effect of its tension in the symmetria bilateralis handle bottom hole of machine core board (1-3) upper surface, the cartridge heater upper end of heating bath temperature-controlling mechanism is air channel (2-7) and oil drain pan (2-1), and lower end temperature control dish (2-3) is adjacent on the electrode bottom surface under the effect of coil tension spring (2-4) power automatically.
2, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism, it is characterized in that external electrode (1-1) upper step sidewall middle part open locking screw hole, near followingly leave oilhole (1-15), exterior bottom is opened alignment grooves (1-16), inwall pole-face upper edge exceeds 1 millimeter on step, and the pole-face bottom is a taper.
3, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism; it is characterized in that pole piece plate (1-3) is serves as to fuse with protection utmost point tube below the basis with garden shape plate; open 2 symmetrical air holes (1-18) in the middle and upper part of tube; on pole piece plate face, by 120 degree and 60 degree reticules and external electrodes locate loop wire (1-20) point of crossing open 4 holes, and interior positioning of electrode loop wire (1-19) point of crossing open 5 holes.
4, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism is characterized in that the upper end evagination of dispatch from foreign news agency polar ring (1-4) forms step surface, lower end sidewall middle part corresponding lock-screw (1-14) roof pressure place's open loop shape locking groove (1-21)
5, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism; it is characterized in that opening on the ring-shaped step plane that outside fix insulating base (1-6) upper end evagination forms with pole piece plate (1-3) face on external electrode location loop wire (1-20) go up corresponding 4 perforation; the internal diameter of ring and protection utmost point tube external diameter transition fit; in open on the ring-shaped step plane that convexes in insulating base (1-7) upper edge, location with pole piece plate (1-3) face in positioning of electrode loop wire (1-19) go up corresponding 4 perforation, the external diameter of ring and protection utmost point tube internal diameter transition fit.
6, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism, the end diameter that it is characterized in that binding post (1-11) and lock-screw (1-14) is increased to φ 14, open loop shape shallow slot (1-17) in the outer part on its end face is the ring-shaped step center perforate of 1～2 millimeter of end face middle part epirelief in the inboard of groove.
7, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism, the upper end evagination that it is characterized in that cartridge heater (2-2) strengthens the oil drain pan (2-1) that circularizes groove, the inboard convex edge of this groove exceeds 4 millimeters than edge, the outside, and, exceed the air channel (2-7) of radially all opening 4 millimeters of 24 wide 2～3 millimeters deep on 4 millimeters the convex edge face at this with alignment grooves (1-16) loose fit on the external electrode (1-1) five equilibrium.
8, insulating oil potential electrode as claimed in claim 1 and heating bath temperature-controlling mechanism is characterized in that the temperature control dish bottom that has heat absorbing sheet of temperature control dish (2-3) extends into pipe, insert and are slidingly matched with hole on the cartridge heater bottom (2-5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90202295 CN2071344U (en) | 1990-03-01 | 1990-03-01 | Measuring electrode of insulation oil and temp. controlling system of heating basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90202295 CN2071344U (en) | 1990-03-01 | 1990-03-01 | Measuring electrode of insulation oil and temp. controlling system of heating basin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071344U true CN2071344U (en) | 1991-02-13 |
Family
ID=4883728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90202295 Withdrawn CN2071344U (en) | 1990-03-01 | 1990-03-01 | Measuring electrode of insulation oil and temp. controlling system of heating basin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707033A (en) * | 2016-12-08 | 2017-05-24 | 北京师范大学 | Variable-temperature dielectric constant measurement pool for liquid and solid-liquid phase change |
-
1990
- 1990-03-01 CN CN 90202295 patent/CN2071344U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707033A (en) * | 2016-12-08 | 2017-05-24 | 北京师范大学 | Variable-temperature dielectric constant measurement pool for liquid and solid-liquid phase change |
| CN106707033B (en) * | 2016-12-08 | 2019-06-21 | 北京师范大学 | A kind of alternating temperature dielectric constant measurement pond for liquid and solid-liquid phase change |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |