CN207610642U - A kind of calibrating installation for solid volume expansion gauge - Google Patents
A kind of calibrating installation for solid volume expansion gauge Download PDFInfo
- Publication number
- CN207610642U CN207610642U CN201721689250.6U CN201721689250U CN207610642U CN 207610642 U CN207610642 U CN 207610642U CN 201721689250 U CN201721689250 U CN 201721689250U CN 207610642 U CN207610642 U CN 207610642U
- Authority
- CN
- China
- Prior art keywords
- test chamber
- screw rod
- micrometer head
- calibration
- expansion
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model is related to a kind of calibrating installations for solid volume expansion gauge, there are one the hollow bases being fixed on front side of expansion gauge test chamber in cavity wall for tool, pedestal and the junction of expansion gauge test chamber cavity wall are sealed by the second ring type seal in the form of static seal structure, first annular sealing ring is set in base cavity pocket, by the rear portion screw rod of a secondary spiral micrometer head by penetrating base cavity pocket in the form of movable sealing structure in first annular sealing ring after, spiro rod rear end screw thread is set to penetrate in expansion gauge test chamber again, it is equipped with ratchet in spiral micrometer head front, the rear portion screw rod of spiral micrometer head can be driven to be moved along base cavity pocket axial reciprocating by the rotation of ratchet.Calibrating installation described in the utility model does not change dilatometer test chamber internal environment before and after calibration, and its dimension criteria provided can be adjusted on demand, realizes repeatedly calibration, and then control random error；The calibrating installation is also equipped with the ability that volume increases and decreases calibration simultaneously.
Description
Technical field
The utility model belongs to technical field of measuring equipment, core be to provide it is a kind of do not influence to measure, can repeatedly adjust,
Can positive negative regulator (provide volume increases standard and volume reduces standard), can trace to the source for solid volume expansion gauge
Calibrating installation.
Background technology
Expansion characteristics refer under the external force load such as the environmental loads such as temperature, pressure and pulling force, pressure, and material volume changes
The characteristic for becoming and (increasing or reduce).In engineer application, the expansion characteristics of solid material are the characteristic of material mechanics that must take into consideration
One of.Obtain volume-expanding characteristics method be：Measuring volume expansion of the material under load-up condition, (i.e. volume increaseds or decreases
Magnitude), take and volume expansion and load the ratio of front volume to get the expansion characteristics to material under load-up condition.Therefore, body
The high-precision of product expansion can trace to the source measurements, for obtaining solid material expansion characteristics with key effect.
For isotropic material, the linear expansion characteristic of all directions is identical, so under load-up condition, measures material
Expect the length knots modification in either direction, you can volume expansion and the expansion characteristics of material are calculated；For anisotropic
The linear expansion characteristic of solid material (such as part high molecular material, advanced composite material (ACM)), all directions is different, so can not
Material volume is obtained using the above method to expand.
The volume expansion instrument well known in the art at present measured for solid material volume expansion is broadly divided into using gas
The gas type dilatometer of medium and the liquid-type dilatometer for using liquid medium.The calibration method of existing volume expansion instrument is：
It is closed after the test chamber of inflatable body or liquid in loading using the calibrated bolck of known volume, it is calibrated；After calibration, beat
It opens test chamber and takes out calibrated bolck, be reloaded into closed after material sample, load is applied to material sample, air pressure in test chamber is caused to increase
(gas method) or volume of sample variation (liquid processes) greatly, to the volume of air pressure knots modification or liquid medium, the variable measures.
Above-mentioned calibrating installation and calibration method the problem is that：First, with measurement process, the opening and closing of test chamber cause for calibration
The front and back test intracavity liquid of calibration or gas medium state (mainly volume) is set to change, measurement result can not trace to the source；Its
Secondary, each calibrated bolck can only provide a kind of known dimension criteria and be calibrated, and whether be carried out using multiple calibrated bolcks multiple
Calibration, or single-point calibration is only carried out, all it is readily incorporated random error；Finally, dimension criteria block can only generally carry out volume increasing
The calibration added cannot reduce volume and calibrate.
Invention content
The purpose of this utility model is that being solved to problem of the existing technology, a kind of structural behaviour conjunction is designed
Reason, the easy to operate calibrating installation for solid volume expansion gauge, the device do not change dilatometer before and after calibration and survey
Chamber internal environment is tried, the dimension criteria provided is measurable to trace to the source, and the dimension criteria that secondly calibrating installation provides can be adjusted on demand
Section realizes repeatedly calibration, and then controls random error；In addition be also equipped with volume increases and decreases calibration to the calibrating installation simultaneously
Ability.
The technical solution used for achieving the above object is such：What is provided is swollen for solid volume
The calibrating installation tool of swollen measuring instrument there are one the hollow base being fixed on front side of expansion gauge test chamber in cavity wall, pedestal with it is swollen
The junction of swollen measuring instrument test chamber cavity wall is sealed by the second ring type seal in the form of static seal structure, in pedestal sky
Cavity inner sleeve is equipped with first annular sealing ring, by the rear portion screw rod of a secondary spiral micrometer head by first annular sealing ring with dynamic sealing
After structure type penetrates base cavity pocket, then spiro rod rear end screw thread is made to penetrate in expansion gauge test chamber, before spiral micrometer head
Portion is equipped with ratchet, the rear portion screw rod of spiral micrometer head can be driven to be moved along base cavity pocket axial reciprocating by the rotation of ratchet.
In real work, the utility model can measure by using volume, the measurable micrometer head screw rod traced to the source is as body
Product expansion standard；By the movable sealing structure of device pedestal, screw rod can increase or decrease it in test chamber inside points as needed
Volume, volume expansion standard is provided；After the completion of calibration, Screw recovery is in situ, carries out volume expansion measurement.
Compared with prior art, the utility model is advantageously：
One, the utility model uses the micrometer head screw rod of uniform diameter, and the part that screw rod is stretched into dilatometer test chamber is made
For dimension criteria, since its linear measure longimetry and diameter measurement can be achieved metering and trace to the source, so the volume mark that can be traced to the source can be provided
It is accurate；
Two, the micrometer head spiro rod length of the calibrating installation is adjustable, so multiple volumes can be provided as needed for calibration
Standard, the defect of single dimension criteria can only be provided by overcoming traditional standard block, be convenient for multiple spot calibration, controlled with chance error
Difference；
Three, screw rod exits the volume of part from test chamber, it is possible to provide the dimension criteria in reduction in volume calibration, and it is existing
Volume calibration method can only provide the dimension criteria of volume incrementss using dimension criteria block；After calibration, micrometer head
Screw recovery is in situ, you can starts to measure, avoiding must open test chamber in existing method, take out calibrated bolck, then again
The troublesome operation for installing sample and sealing, eliminates the error of secondary introducing in these operating process, it is ensured that when calibration is with measuring
In test chamber environment it is constant, calibration can trace to the source with measurement result.
Description of the drawings
Fig. 1 is the structural schematic diagram of a specific embodiment of the utility model.
Each number designation title is respectively in figure：1- spiral micrometer heads, the first annular sealing rings of 2-, 3- (micrometer head)
Screw rod, 4- expansion gauge test chambers, 5- pedestals, the second ring type seals of 6-.
Specific implementation mode
Referring to attached drawing, there are one fixed for the calibrating installation tool described in the utility model for solid volume expansion gauge
Hollow base 5 in 4 front side cavity wall of expansion gauge test chamber, the junction of pedestal 5 and 4 cavity wall of expansion gauge test chamber
It is sealed in the form of static seal structure by the second ring type seal 6, first annular sealing ring is set in 5 cavity of pedestal
2, the rear portion screw rod 3 of a secondary spiral micrometer head 1 is empty by penetrating pedestal 5 in first annular sealing ring 2 in the form of movable sealing structure
After chamber, then 3 rear end screw thread of screw rod is made to penetrate in expansion gauge test chamber 4, is equipped with ratchet in 1 front of spiral micrometer head, passes through
The rotation of ratchet can drive the rear portion screw rod 3 of spiral micrometer head to be moved along 5 cavity axial reciprocating of pedestal.
The actual product of the calibrating installation manufactures according to the following steps：
1st step：Pedestal of the manufacture with movable sealing structure and static seal structure, for fixing micrometer head.Wherein, static seal
The sealing of (i.e. the second ring type seal 6) for pedestal 5 and the cavity wall engaging portion of expansion gauge test chamber 6；Dynamic sealing (i.e.
One ring type seal 2) for the sealing of micrometer head screw rod 3 and pedestal engaging portion it can make micrometer in addition, by movable sealing structure
Head screw rod 3 more can be moved back and forth swimmingly；
2nd step：Using the micrometer caliper after measurement and calibration, 3 diameter of micrometer head screw rod is measured；To spiral micrometer
First 1 carries out measurement and calibration；
3rd step：Spiral micrometer head 1 is mounted on the base, it is ensured that screw rod 3 is moved back and forth suitable by movable sealing structure
Freely；
4th step：Debug and confirm the sealing performance of calibrating installation.
In the utility model structure, spiral micrometer head 1 is fixed on pedestal 5, has movable sealing structure, the first ring in pedestal 5
Shape sealing ring 2 is the component being in direct contact with micrometer head screw rod 3 in movable sealing structure；Pedestal 5 is fixed on expansion gauge test
The cavity wall of chamber 4；Pedestal 5 is having a static seal structure with cavity wall junction, the second ring type seal 6 be in static seal structure with expansion
The component that the cavity wall of measuring instrument test chamber 4 is in direct contact；The corresponding position trepanning of 4 cavity wall of expansion gauge test chamber, makes expansion
Measuring instrument test chamber 4 is connected to 5 inner cavity of pedestal, while micrometer head screw rod 3 can stretch into 4 chamber of expansion gauge test chamber by the hole
In wall.Calibrating installation is after in test chamber cavity wall, installation is complete, static seal structure, the calibration cartridge of calibrating installation and test cavity combining body
It sets inside and and together with original test chamber cavity wall, constitutes new test chamber, thus with the movable sealing structure of micrometer head screw rod
Ensure calibrating with measurement process, expansion gauge tests intracavity gas or liquid medium and external environs.
In practical application, for carrying out the gas type dilatometer of volume expansion measurement, calibrating installation peace with gas medium
Calibration flow after the completion of dress is as follows：
(1), the initial position L of screw rod is recorded0With the air pressure P in test chamber0；
(2), calibrated volumes as needed, rotation micrometer head ratchet increased or decrease screw rod and stretch into survey to drive screw rod
Try the length of chamber, record screw position L1With the air pressure P in test chamber1；
(3), the screw diameter D measured before being installed in conjunction with calibrating installation, then swell increment dimension criteria at this time is V1=π D2
(L1-L0)÷4；
(4), (2), the operation of (3) step as needed, are repeated, the number of multigroup swell increment dimension criteria and corresponding air pressure is obtained
According to；
(5), micrometer head ratchet is rotated, to drive Screw recovery to initial position L0；
(6), the swell increment dimension criteria-barometric information obtained according to measurement draws calibration graph, according to this curve
Figure, gas pressure measurement when by volume expansion can check in volume expansion value.
For carrying out the liquid-type dilatometer of volume expansion measurement, school of the calibrating installation after installation is complete with liquid medium
Quasi- flow is as follows：
(1), the initial position L of screw rod is recorded0With the measured value V of characterization liquid volume0；
(2), calibrated volumes as needed, rotation micrometer head ratchet increased or decrease screw rod and stretch into survey to drive screw rod
Try the length of chamber, record screw position L1With the measured value V of liquid volume1；
(3), the screw diameter D measured before being installed in conjunction with calibrating installation, then swell increment dimension criteria at this time is V1=π D2
(L1-L0)÷4；
(4), (2), the operation of (3) step as needed, are repeated, multigroup swell increment dimension criteria and corresponding liquid volume are obtained
Data；
(5), micrometer head ratchet is rotated, to drive Screw recovery to initial position L0；
(6), the swell increment dimension criteria-liquid volume data obtained according to measurement draw calibration graph, according to this
Curve graph, liquid volume measurement value when by volume expansion, can check in volume expansion value.
It should be noted that：The above is only the preferred embodiment of the present invention, and it is new to be not limited to this practicality
Type, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It can still modify to the technical solution recorded in previous embodiment, or which part technical characteristic is replaced on an equal basis
It changes.
Within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing being within the protection scope of the utility model.
Claims (1)
1. a kind of calibrating installation for solid volume expansion gauge, it is characterised in that：There are one be fixed on dilatometry to tool
Hollow base (5) on front side of instrument test chamber (4) in cavity wall, pedestal (5) and the junction of expansion gauge test chamber (4) cavity wall are logical
It crosses the second ring type seal (6) to be sealed in the form of static seal structure, first annular sealing is set in pedestal (5) cavity
It encloses (2), by the rear portion screw rod (3) of a secondary spiral micrometer head (1) by being worn in the form of movable sealing structure in first annular sealing ring (2)
After entering pedestal (5) cavity, then screw rod (3) rear end screw thread is made to penetrate in expansion gauge test chamber (4), in spiral micrometer head (1)
Front is equipped with ratchet, the rear portion screw rod (3) of spiral micrometer head can be driven along pedestal (5) cavity axial reciprocating by the rotation of ratchet
It is mobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689250.6U CN207610642U (en) | 2017-12-07 | 2017-12-07 | A kind of calibrating installation for solid volume expansion gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689250.6U CN207610642U (en) | 2017-12-07 | 2017-12-07 | A kind of calibrating installation for solid volume expansion gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207610642U true CN207610642U (en) | 2018-07-13 |
Family
ID=62797665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721689250.6U Withdrawn - After Issue CN207610642U (en) | 2017-12-07 | 2017-12-07 | A kind of calibrating installation for solid volume expansion gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207610642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843176A (en) * | 2017-12-07 | 2018-03-27 | 陕西电器研究所 | A kind of calibrating installation for solid volume expansion gauge |
| CN112595284A (en) * | 2021-03-04 | 2021-04-02 | 山东胜工检测技术有限公司 | Special calibration device for shale dilatometer and installation method thereof |
-
2017
- 2017-12-07 CN CN201721689250.6U patent/CN207610642U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843176A (en) * | 2017-12-07 | 2018-03-27 | 陕西电器研究所 | A kind of calibrating installation for solid volume expansion gauge |
| CN112595284A (en) * | 2021-03-04 | 2021-04-02 | 山东胜工检测技术有限公司 | Special calibration device for shale dilatometer and installation method thereof |
| CN112595284B (en) * | 2021-03-04 | 2021-05-28 | 山东胜工检测技术有限公司 | Special calibration device for shale dilatometer and installation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180713 Effective date of abandoning: 20230714 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180713 Effective date of abandoning: 20230714 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |