CN207882346U - A kind of experimental provision measuring solid dielectric relative dielectric constant - Google Patents
A kind of experimental provision measuring solid dielectric relative dielectric constant Download PDFInfo
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- CN207882346U CN207882346U CN201721756877.9U CN201721756877U CN207882346U CN 207882346 U CN207882346 U CN 207882346U CN 201721756877 U CN201721756877 U CN 201721756877U CN 207882346 U CN207882346 U CN 207882346U
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- nut
- dielectric constant
- bottom crown
- case
- experimental provision
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- 239000007787 solid Substances 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 14
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model belongs to dielectric constant measuring apparatus field, and discloses a kind of experimental provision measuring solid dielectric relative dielectric constant.The device includes pedestal, bottom crown, case, axle sleeve and shifting axle, bottom crown is set on the base, shifting axle is T-shaped, the horizontal component of T-type is top crown, top crown is opposite with bottom crown to be arranged in parallel, the vertical axes partial outer face of T-type is provided with the screw thread coordinated with nut, nut rotates so that shifting axle moves up and down, and then adjust the spacing between upper bottom crown, wherein, the displacement of its vertical direction is limited in nut rotary course by limit element, limit element includes axle sleeve and case, axle sleeve is moved down for limiting nut, step position is provided on case, step position limits it with nut cooperation and moves up.By the utility model, measurement error caused by the depth of parallelism between direct moving in rotation axis changes upper bottom crown is solved, simple in structure, manufacturing cost is low, high certainty of measurement, and use scope is wide.
Description
Technical field
The utility model belongs to dielectric constant measuring apparatus field, opposite more particularly, to a kind of measurement solid dielectric
The experimental provision of dielectric constant.
Background technology
Medium will produce charge inducing in extra electric field and weaken electric field, electric field and former extra electric field (vacuum in medium
In) ratio be relative dielectric constant, also known as permitivity, with frequency dependence, dielectric constant is relative dielectric constant and vacuum
Middle absolute dielectric constant product, if there is the material of high-k is put in the electric field, the intensity of electric field can have in dielectric
Considerable decline, since electrostatic screen field strength is always zero inside perfact conductor, therefore its dielectric constant is infinite.Opposite dielectric is normal
Number, value be equal to using predict material as medium with using vacuum as made of medium with the ratio between sized capacitor capacitance, the value
It is the characterization of material storage electric energy power, also referred to as relative permitivity, the relative dielectric constant under different materials different temperatures is different, profit
The capacitor of different performance specification or related element can be made with this characteristic.
Relative dielectric constant εrUnder type such as can be used to measure with electrostatic field：First between two pieces of pole plates for vacuum when
Wait the capacitance C of test capacitors0, then, electricity is measured after dielectric is added with same capacitance pole distance between plates but between pole plate
Hold Cx, then relative dielectric constant can be calculated with following formula
Relative dielectric constant is the physical parameter for reflecting dielectric substance polarization characteristic in electrostatic field, for weighing insulation
Body stores the performance of electric energy, and the relative dielectric constant of different materials is different, and different performance specification can be made using this characteristic
Capacitor or related element understand the physics of dielectric constant to be applied to scientific research and industrial every field
Meaning and measuring principle grasp the assay method of solid dielectric relative dielectric constant, are important interior in colleges and universities' science and engineering class experiment
Hold, however, the equipment of current Measuring Dielectric Constant is not suitable for the application environment in laboratory mostly, exist design it is unreasonable,
The shortcomings of measurement result is not accurate enough has developed a kind of experiment dress of novel measurement solid dielectric relative dielectric constant thus
It sets.
Utility model content
For the disadvantages described above or Improvement requirement of the prior art, it is opposite that the utility model provides a kind of measurement solid dielectric
The experimental provision of dielectric constant is designed by shifting axle and nut, compared with direct moving in rotation axis in the prior art, purpose
Be by rotating nuts shifting axle is moved up and down, so as to adjust the distance between upper bottom crown, thus solve due to
Direct moving in rotation axis changes the technical issues of measurement error caused by the depth of parallelism between upper bottom crown.
To achieve the above object, according to the utility model, a kind of reality measuring solid dielectric relative dielectric constant is provided
Experiment device, which is characterized in that the device includes pedestal, bottom crown, case, axle sleeve and shifting axle,
The pedestal is the carrier of other elements, and on the base, the shifting axle is T-shaped, the T for the bottom crown setting
The horizontal component of type is top crown, and the top crown is opposite with the bottom crown to be arranged in parallel, the vertical shaft portion appearance of the T-type
Face is provided with the screw thread coordinated with nut, which rotates so that the shifting axle moves up and down, and then adjusts the pole up and down
Spacing between plate, wherein make it that the displacement of vertical direction not occur by limit element in the nut rotary course, the limit
Bit unit includes the axle sleeve and case being arranged below the nut, and the axle sleeve is sleeved in the vertical axes of the shifting axle, is used
Moved down in limiting the nut, step position be provided on the case, the step position and nut cooperation limit its to
Upper movement；
In addition, being connected separately with conducting wire on the upper bottom crown, it is connect with extraneous measuring instrument by the conducting wire.
It is further preferred that cover board is provided on the pedestal, for placing the case.
It is further preferred that the material of the pedestal, cover board and case uses insulating materials.
It is further preferred that the vertical axes outer surface setting of the shifting axle is fluted, this is provided on the cover board
The boss of groove cooperation, the verticality moved up and down for ensuring the T-type component.
It is further preferred that there are two wiring holes for setting on the cover board, it is connect respectively with the conducting wire.
It is further preferred that through-hole is provided with above the case, for placing amesdial measurement head.
In general, it can obtain down the above technical solutions conceived by the present invention are compared with the prior art,
Row advantageous effect：
1, the utility model is by using mobile shaft design so that the vertical axes of top crown and the shifting axle are one whole
Body reduces top crown and the error in vertical axes assembling process compared with prior art, to change the levelness of top crown,
And then change the depth of parallelism between upper bottom crown, influence the accuracy of measurement result；
2, the utility model is by using the cooperation of shifting axle and nut, and nut is in rotary course, nut and shifting axle
Relative motion occurs, by limiting moving up and down for nut so that shifting axle moves up and down without rotating, and does not change pole up and down
The depth of parallelism of plate；Further, since shifting axle does not rotate so that relative displacement does not occur on circumference between upper bottom crown, no
It rotates so that equipment ensure that the system environments of entire measurement process is constant in measurement process, with original state phase
Than reducing variable, improving measurement accuracy；
3, the utility model increases the adjustable pitch between bottom crown by using non-rotary mobile shaft design
From so that the area of section of upper bottom crown can be set according to the sectional area of object under test, not by the size of object under test
It influences, expands use scope；
4, the utility model is moved up and down by using shifting axle to change the distance of upper bottom crown, is surveyed when using amesdial
Measure top crown movement apart from when, compared with the experimental provision of existing Measuring Dielectric Constant, effectively avoid idle running difference
Problem；
5, experimental provision provided by the utility model is simple in structure, and manufacturing cost is low, and easy to operate, high certainty of measurement makes
It is wide with range.
Description of the drawings
Fig. 1 is the experimental provision structural schematic diagram constructed by the preferred embodiment according to the utility model.
In all the appended drawings, identical reference numeral is used for indicating identical element or structure, wherein：
1- pedestal 2- cover board 3- case 4- axle sleeve 5- nut 6- amesdial measurement head 7- amesdial 8- shifting axles
9- binding post 11- conducting wire 13- footing 14- top crown 15- bottom crown 16- amesdials
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
Fig. 1 is the experimental provision structural schematic diagram constructed by the preferred embodiment according to the utility model, as shown in Figure 1,
A kind of experimental provision measuring solid dielectric relative dielectric constant, which includes pedestal 1, bottom crown 15, shifting axle 8, nut
5, axle sleeve 4, cover board 2, case 3, conducting wire 11 and binding post 9.Pedestal 1 is U-shaped, and bottom crown 15 is arranged in pedestal 1, and cover board 2 is set
It sets above pedestal 1, is connected with pedestal, shifting axle 8 is T-shaped, and the horizontal component of T-type is top crown 14, top crown 14 and lower pole
Plate 15 is opposite to be arranged in parallel, for placing object under test, the vertical axes partial outer face of T-type between top crown 14 and bottom crown 15
It is provided with external screw thread, nut 5 coordinates with external screw thread, and when rotating nuts, the up and down motion due to nut is limited, so that moving
The distance between moving axis moves up and down, and then adjust upper bottom crown, step position is provided on case 3, which matches with nut
It closes, limits moving upwards for nut, axle sleeve 4 is provided with below nut, axle sleeve 4 is sleeved in the vertical axes of T-type, and case 3 is arranged
On cover board 2, bottom crown 15 and shifting axle 8 are all made of aluminium alloy making, and cross section is circle, area equation, cover board 2, pedestal 1
It is insulating materials with case 3,3 top of case is provided with through-hole, and the measurement head of amesdial passes through the vertical axes of the through-hole and T-type
Tip contact obtains the thickness of determinand by the difference in height before and after measurement clamping determinand；It is connected separately on upper bottom crown
Conducting wire 11, conducting wire are connect with binding post 9, extraneous measuring instrument, such as universal bridge, are connected with upper bottom crown by wire column,
Multiple footing 13 are provided with below pedestal, are used to support whole device.
The measurement that this experimental provision is explained below uses process.
Rotating nut 5, it is zero to make top crown 14 and the spacing of bottom crown 15, presses the zero key of amesdial, rotating nut
5, make top crown, 14 rise the height slightly larger than measured material thickness, are placed in parallel into measured material, rotating nut 5 makes top crown
14 decline and simultaneously compress measured material, read amesdial registration at this time and record, and repeat the step 5 time, make top crown every time, and 14
Measured material is all moved certain angle as shaft rotation using center line after rising to compress again, 5 amesdial registrations is recorded respectively, puts down
Mean value is the thickness of measured material, universal bridge is connect by binding post with experimental provision, rotating nut 5 makes top crown 14
Slightly rise, take out measured material, records reading after universal bridge registration stabilization, while writing down amesdial registration at this time,
Retaining nut 5 is motionless, and measured material is placed in parallel into top crown again, between 14 and bottom crown 15, waits for that universal bridge registration is steady
Reading is recorded after fixed.Experimental data substitution formula scales are found out to the relative dielectric constant of measured medium.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (6)
1. it is a kind of measure solid dielectric relative dielectric constant experimental provision, which is characterized in that the device include pedestal (1), under
Pole plate (15), case (3), axle sleeve (4) and shifting axle (8),
The bottom crown (15) is arranged on the pedestal (1), and the shifting axle (8) is T-shaped, and the horizontal component of the T-type is upper
Pole plate (14), the top crown is opposite with the bottom crown (15) to be arranged in parallel, and the vertical axes partial outer face of the T-type is provided with
With the screw thread of nut (5) cooperation, which rotates so that the shifting axle (8) moves up and down, and then adjusts the upper bottom crown
Between spacing, wherein its vertical direction is limited by limit element in nut (5) rotary course and is subjected to displacement, the limit
Bit unit includes that the axle sleeve (4) being arranged below the nut and case (3), the axle sleeve are sleeved on the vertical axes of the shifting axle
On, it is moved down for limiting the nut, step position is provided on the case (3), which coordinates with the nut
It is limited to move up；
In addition, being connected separately with conducting wire (11) on the upper bottom crown, it is connect with extraneous measuring instrument by the conducting wire.
2. a kind of experimental provision measuring solid dielectric relative dielectric constant as described in claim 1, which is characterized in that described
Cover board (2) is provided on pedestal, for placing the case (3).
3. a kind of experimental provision measuring solid dielectric relative dielectric constant as claimed in claim 1 or 2, which is characterized in that
The material of the pedestal (1), cover board (2) and case (3) uses insulating materials, the bottom crown (15) and shifting axle (8) to select
Conductive material.
4. a kind of experimental provision measuring solid dielectric relative dielectric constant as claimed in claim 2, which is characterized in that described
The vertical axes outer surface setting of shifting axle (8) is fluted, the boss of groove cooperation is provided on the cover board, for ensuring
The verticality that the T-type component moves up and down.
5. a kind of experimental provision measuring solid dielectric relative dielectric constant as claimed in claim 2, which is characterized in that described
There are two binding posts (9) for setting on cover board, are connect respectively with the conducting wire.
6. a kind of experimental provision measuring solid dielectric relative dielectric constant as described in claim 1, which is characterized in that described
Case is provided with through-hole above (3), for placing amesdial measurement head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756877.9U CN207882346U (en) | 2017-12-15 | 2017-12-15 | A kind of experimental provision measuring solid dielectric relative dielectric constant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756877.9U CN207882346U (en) | 2017-12-15 | 2017-12-15 | A kind of experimental provision measuring solid dielectric relative dielectric constant |
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| Publication Number | Publication Date |
|---|---|
| CN207882346U true CN207882346U (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721756877.9U Withdrawn - After Issue CN207882346U (en) | 2017-12-15 | 2017-12-15 | A kind of experimental provision measuring solid dielectric relative dielectric constant |
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| CN (1) | CN207882346U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942143A (en) * | 2017-12-15 | 2018-04-20 | 华中科技大学 | A kind of experimental provision for measuring solid dielectric relative dielectric constant |
| CN114910827A (en) * | 2022-05-13 | 2022-08-16 | 滁州市技术监督检测中心 | Device for detecting the influence of locking on the capacitance of a variable capacitor |
-
2017
- 2017-12-15 CN CN201721756877.9U patent/CN207882346U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942143A (en) * | 2017-12-15 | 2018-04-20 | 华中科技大学 | A kind of experimental provision for measuring solid dielectric relative dielectric constant |
| CN107942143B (en) * | 2017-12-15 | 2024-02-06 | 华中科技大学 | Experimental device for measure solid medium relative dielectric constant |
| CN114910827A (en) * | 2022-05-13 | 2022-08-16 | 滁州市技术监督检测中心 | Device for detecting the influence of locking on the capacitance of a variable capacitor |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180918 Effective date of abandoning: 20240206 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180918 Effective date of abandoning: 20240206 |