CN102661771B - Device and method for measuring quantized oil level of high-voltage current transformer - Google Patents
Device and method for measuring quantized oil level of high-voltage current transformer Download PDFInfo
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- CN102661771B CN102661771B CN201210145988.1A CN201210145988A CN102661771B CN 102661771 B CN102661771 B CN 102661771B CN 201210145988 A CN201210145988 A CN 201210145988A CN 102661771 B CN102661771 B CN 102661771B
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- oil level
- angle instrument
- vernier
- tripod
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- 230000001105 regulatory Effects 0.000 claims description 3
- 230000023298 conjugation with cellular fusion Effects 0.000 claims description 2
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- 230000021037 unidirectional conjugation Effects 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 5
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Abstract
The invention discloses a device for measuring a quantized oil level of a high-voltage current transformer. The device comprises a tripod, wherein a vernier angle instrument is mounted on a horizontal plane at the top of the tripod; and a laser sighting device is mounted on the vernier angle instrument. The invention further provides a measurement method, comprising the following steps of: firstly, adjusting the tripod so that the vernier angle instrument is ensured to be placed at a horizontal position; secondly, after adjusting and determining a measurement position, accurately aligning an upper limit, a lower limit and a scale of the oil level on a viewing window of the high-pressure current transformer by using the laser sighting device; meanwhile, obtaining a corresponding angle by the measurement of the vernier angle instrument, wherein angles corresponding to an upper limit A point, a lower limit C point and an oil level scale B point of the oil level viewing window are gamma, alpha and beta; and finally, obtaining a ratio numerical value of the entire viewing window relative to the oil level scale through a calculation formula. With the adoption of the measurement device and method provided by the invention, the gap in the method for measuring the quantized oil level of the high-pressure current transformer is filled. The measurement device provided by the invention has the characteristics of convenience in assembling and carrying, simplicity in operation and high accuracy.
Description
Technical field
The present invention relates to measure measurement mechanism and the corresponding measuring method of high-tension current inductor oil level.
Background technology
Due to the advantage such as compact conformation, dynamic and thermal stability ability be strong, the oil-filled current transformer of inversion type is widely used in the electrical network of 35kV and above.As judging the whether normal important evidence of mutual inductor equipment, observe the oil level of mutual inductor, analyze oil level situation of change, become the important content that power worker's periodical inspection checks mutual inductor equipment.Yet because the oil level glass of inversed current transformer is all positioned at the top of mutual inductor, higher apart from ground, and view window only has 40 ℃ ,-20 ℃ so simple several scale marks outward, make walkaround inspection personnel oil level cannot be quantified as to a concrete numerical value, therefore to oil level whether rationally change, final conclusion that normally can only be next ambiguous.This operating condition for comprehensive grasp mutual inductor equipment is very unfavorable.Especially when current transformer is under oil impregnate defect situation, walkaround inspection personnel are difficult to judge by the result analysis of all previous tour the trend of oil impregnate development of defects, therefore be badly in need of wanting a kind of measuring method that can quantize inversed current transformer oil level, and propose corresponding measurement mechanism.
Summary of the invention
Technical matters to be solved by this invention is just to provide a kind of measurement mechanism and the corresponding measuring method that can measure high-tension current inductor oil level, by use of the present invention, walkaround inspection personnel can be a definite percentage by the oil level measuring and calculating of inversed current transformer, thereby solved the problem that mutual inductor oil level cannot quantize, by analyzing the oil level numerical value of all previous record, the factors such as integrated environment temperature, load condition, whether walkaround inspection personnel can judge the operation of mutual inductor equipment comparatively exactly normal.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of measurement mechanism that quantizes high-tension current inductor oil level, it is characterized in that: comprise a secondary tripod, one vernier angle instrument is installed on the surface level at described tripod top, on described vernier angle instrument, a laser sight is installed.
As preferably, described tripod comprises three legs, wherein two support foot hights are adjustable, described tripod top is provided with the supporting surface of a level, described surface level is set in parallel in supporting surface top, wherein between supporting surface and surface level, be provided with three and be the Level tune screw that equilateral triangle distributes, by adjusting these three Level tune screws, guarantee the level of surface level.
As preferably, two mutually orthogonal spirit bubbles are set on described surface level, in steeping by eye-level, whether level of determined level face is carried out in the position of bubble.
As preferably, described vernier angle instrument comprises T-shaped support member, clip, fan-shaped planker, main scale, vernier scale, base chi and sector, and T-shaped support member bottom is fixed with tripod surface level, and fan-shaped planker is connected with clip by attachment screw; Clip is installed on T-shaped support member one side arm, and sector is installed at main scale back; Main scale outboard end arranges vernier scale, and sector adjusting screw is set on fan-shaped planker, and sector coordinates with sector adjusting screw for regulating and takes measurement of an angle, and the front end of main scale arranges base chi and laser sight.
As preferably, the surface level center of described tripod arranges a square fixture, described square fixture adopts the metal hollow pipe of square, and square fixture pore internal diameter size makes T-shaped support member bottom insertion pore realize fixing with the T-shaped support member bottom mating of vernier angle instrument.
As preferably, described laser sight bottom arranges gib screw on two fixing threaded holes and vernier angle instrument and is used in conjunction with laser sight is fixed on to vernier angle instrument main scale front end, described laser sight is provided with the laser beam adjusting screw that regulates the beam direction that Laser emission mouth launches, and the base chi of guaranteeing laser beam and vernier angle instrument by adjusting laser beam adjusting screw in the same horizontal line.
The present invention also provides a kind of measuring method that quantizes high-tension current inductor oil level, it is characterized in that: first, regulate tripod to guarantee vernier angle instrument horizontal positioned; Secondly, behind adjustment definite measuring position, utilize laser sight accurately to aim at the scale mark of high-tension current inductor observation window upper and lower limit and oil level, with vernier angle instrument, measure corresponding angle, wherein oil level glass upper limit A point, lower limit C point and angle corresponding to oil level scale mark B point are respectively γ, α, β simultaneously; Finally, pass through computing formula
draw the proportional numerical value of the relatively whole view window of oil level scale.
The present invention has filled up the blank that quantizes high-tension current inductor oil-level measurement method, and measurement mechanism provided by the invention has the advantages that assembling is easy to carry, simple to operate, degree of accuracy is high.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is measuring method schematic diagram;
Fig. 2 is surveying instrument structural representation;
Fig. 3 is tripod front view;
Fig. 4 is tripod side view;
Fig. 5 is tripod vertical view;
Fig. 6 is vernier angle instrument front view;
Fig. 7 is vernier angle instrument rear view;
Fig. 8 is laser sight front view;
Fig. 9 is laser sight left view;
Figure 10 is laser sight right view;
Figure 11 is laser sight vertical view.
Embodiment
As shown in Figure 2, the measurement mechanism of quantification high-tension current inductor oil level provided by the invention is mainly comprised of special-purpose tripod 1, vernier angle instrument 8, the laser sight 9 of mapping, convenient for assembly.
As shown in Figures 2 to 5, wherein tripod part is mainly comprised of the special-purpose tripod 1 of mapping, supporting surface 2, Level tune screw 3, surface level 6, spirit bubble (being respectively transverse horizontal bubble 4 and vertical equity bubble 7), square fixture 5, wherein two legs are adjustable to survey and draw special-purpose tripod, can be applicable to most measurement environment (different soil properties, the gradient); Three Level tune screws 3 are set on supporting surface 2, by adjusting these three Level tune screws, guarantee surface level 6 levels; Two mutually orthogonal spirit bubbles are set on surface level 6, by observing the position of bubble in two spirit bubbles, judge whether level of surveying instrument surface level 6; At the center of surface level 6, square fixture 5 is set, plays fixedly vernier angle instrument; Square fixture 5 adopts the metal hollow pipe of square, and pore internal diameter size is mated with the T-shaped support member 10 of vernier angle instrument, makes T-shaped support member 10 insert fixedly use of pore.
Vernier angle instrument 8 as shown in Figures 6 and 7, mainly by parts such as T-shaped support member 10, clip 11, main scale 13, vernier scale 12, brake block 17, base chi 15, fan-shaped planker 20, sector adjusting screw 24, formed, fan-shaped planker 20 and main scale 13, vernier scale 12, base chi 15 are as the main body of this vernier angle instrument, and fan-shaped planker 20 is connected with clip 11 by attachment screw 18; In clip 11, be inserted with T-shaped support member 10, the position by the fixing T-shaped support member 10 of clamp adjustment screw 19 with vernier angle instrument main body; On fan-shaped planker 20, brake block 17 is set, by adjustable brake screw 14, guarantee to obtain measurement result after vernier angle instrument can not change again; Main scale minimum scale is 1 degree, and vernier scale 12 minimum scales are 2 minutes; Sector 22 is installed at main scale 13 backs, by three screws 23, is fixed on main scale; Sector 22 coordinates with sector adjusting screw 24, for regulating, takes measurement of an angle; Main scale 13 end arranges laser sight 9, and laser sight 9 is fixed by two gib screws 16; The laser beam that laser sight 9 penetrates and base chi 15 are on same horizontal line.
Laser sight 9 is as shown in Fig. 7 to Figure 11, and bottom arranges two fixing threaded holes 26, is used in conjunction with the gib screw 16 on vernier angle instrument, and laser sight 9 is fixed on vernier angle instrument 8; Laser beam adjusting screw 28 can regulate the direction of the laser beam of Laser emission mouth 27 ejaculations, guarantees laser beam and vernier angle instrument base chi 15 in the same horizontal line.
The measuring method of the measurement mechanism that adopts above-mentioned quantification high-tension current inductor oil level is described: utilize the Level tune screw of tripod and configuration on it, can guarantee surveying instrument level in conjunction with Fig. 1; After determining measuring position, utilize laser sight accurately to aim at the scale mark of observation window upper and lower limit and oil level, with vernier angle instrument, measure corresponding angle simultaneously, finally by computing formula, draw the proportional numerical value of the relatively whole view window of oil level scale.
After selected measuring position O point, use surveying instrument provided by the invention can accurately measure oil level glass upper limit A point, lower limit C point and corresponding angle γ, α, the β of oil level scale mark B point, thereby show that current mutual inductor oil level is with respect to the numerical value of view window,
Claims (4)
1. a measurement mechanism that quantizes high-tension current inductor oil level, it is characterized in that: comprise a secondary tripod (1), the upper vernier angle instrument (8) of installing of surface level (6) at described tripod top, one laser sight (9) is installed on described vernier angle instrument, described tripod (1) comprises three legs, wherein two support foot hights are adjustable, described tripod top is provided with the supporting surface (2) of a level, described surface level (6) is set in parallel in supporting surface top, wherein between supporting surface and surface level, be provided with three and be the Level tune screw (3) that equilateral triangle distributes, by adjusting these three Level tune screws, guarantee the level of surface level (6), two mutually orthogonal spirit bubbles are set on described surface level (6), in steeping by eye-level, whether level of determined level face (6) is carried out in the position of bubble, described vernier angle instrument (8) comprises T-shaped support member (10), clip (11), fan-shaped planker (20), main scale (13), vernier scale (12), base chi (15) and sector (22), T-shaped support member bottom is fixed with tripod surface level, fan-shaped planker (20) is connected with clip (11) by attachment screw (18), clip (11) is installed on T-shaped support member one side arm, and sector (22) is installed at main scale (13) back, main scale outboard end arranges vernier scale (12), sector adjusting screw (24) is set on fan-shaped planker, sector (22) coordinates with sector adjusting screw for regulating and takes measurement of an angle, and the front end of main scale (13) arranges base chi (15) and laser sight (9).
2. the measurement mechanism of quantification high-tension current inductor oil level according to claim 1, it is characterized in that: surface level (6) center of described tripod (1) arranges a square fixture (5), described square fixture (5) adopts the metal hollow pipe of square, and square fixture pore internal diameter size makes insertion pore in T-shaped support member (10) bottom realize fixing with the T-shaped support member of vernier angle instrument (10) bottom mating.
3. the measurement mechanism of quantification high-tension current inductor oil level according to claim 2, it is characterized in that: described laser sight (9) bottom arranges two fixing threaded holes (26) and is used in conjunction with laser sight (9) is fixed on to vernier angle instrument main scale front end with gib screw (16) on vernier angle instrument, described laser sight is provided with the laser beam adjusting screw (28) that regulates the beam direction that Laser emission mouth (27) launches, and the base chi (15) of guaranteeing laser beam and vernier angle instrument by adjusting laser beam adjusting screw in the same horizontal line.
4. a measuring method that quantizes high-tension current inductor oil level, is characterized in that: first, regulate tripod (1) to guarantee vernier angle instrument horizontal positioned; Secondly, behind adjustment definite measuring position, utilize laser sight (9) accurately to aim at the scale mark of high-tension current inductor observation window upper and lower limit and oil level, use vernier angle instrument (8) to measure corresponding angle, wherein oil level glass upper limit A point, lower limit C point and angle corresponding to oil level scale mark B point are respectively γ, α, β simultaneously; Finally, pass through computing formula
draw the proportional numerical value of the relatively whole view window of oil level scale.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210145988.1A CN102661771B (en) | 2012-05-11 | 2012-05-11 | Device and method for measuring quantized oil level of high-voltage current transformer |
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| CN201210145988.1A CN102661771B (en) | 2012-05-11 | 2012-05-11 | Device and method for measuring quantized oil level of high-voltage current transformer |
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| CN102661771B true CN102661771B (en) | 2014-01-15 |
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