CN207636528U - Linear expansion coefficient detection device - Google Patents
Linear expansion coefficient detection device Download PDFInfo
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- CN207636528U CN207636528U CN201721724913.3U CN201721724913U CN207636528U CN 207636528 U CN207636528 U CN 207636528U CN 201721724913 U CN201721724913 U CN 201721724913U CN 207636528 U CN207636528 U CN 207636528U
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- expansion coefficient
- linear expansion
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- detection device
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Abstract
The utility model is related to a kind of linear expansion coefficient detection devices.Linear expansion coefficient detection device includes heating furnace, the heating furnace both ends are equipped with the first folder and the second folder, the first clamping part and the second clamping part for being clamped in sample to be tested between two folders in heating-furnace intracavitary, first folder and at least one pressure sensor being equipped with for detecting sample to be tested pressure of the second folder are respectively equipped on first folder and the second folder.Elasticity modulus by heating front and back pressure difference and sample to be tested obtains the deflection of sample to be tested by data processing, to obtain the linear expansion coefficient of sample to be tested.Solve the problems, such as that material expand coefficient existing in the prior art is inaccurate.
Description
Technical field
The utility model is related to a kind of linear expansion coefficient detection devices.
Background technology
The coefficient of thermal expansion of solid material is one of the Specifeca tion speeification of material structure deformation, is characterization material property
Important feature amount.Bridge, building, machine design and manufacture and empty day in the works, the expansion characteristics for all coping with material give
Abundant consideration.The existing method for measuring linear expansion coefficient has very much, such as length-measured telescope, optical lever and thousand
Divide ruler etc., still, these measurement methods can cause measurement accuracy to reduce because of inconvenient, test accidental error is larger mostly.
Authorization Notice No. is CN204945068U, and authorized announcement date is that the Chinese patent of 2016.01.06 discloses a kind of light
Electric-type material thermal expansion coefficient measurement device, including holder, cartridge heater, test specimen to be measured, mandril, light barrier, light source, PSD sensing
Device, temperature sensor, amplifier and display, the photo-electric material thermal expansion coefficient measurement device are expanded in traditional metal wire
On the basis of coefficient measuring device, lever and length-measured telescope are replaced with light barrier, light source, PSD sensors.Mandril is placed on to be measured
Above metal bar, light barrier is fixed on mandril top, and when metal bar is by thermal stretching, metal bar makes mandril drive on light barrier
It moves.The light of light source falls the hot spot in PSD sensors through light barrier slit and also moves up.Hot spot movement causes PSD sensors
Output current changes, and displacement is examined and be converted by microcontroller after amplification, to calculate expansion coefficients of metal wire.
When mandril drives light barrier to move up, mandril, which may glance off, causes finally obtained change in displacement inaccurate.
Utility model content
It is existing in the prior art to solve the purpose of this utility model is to provide a kind of linear expansion coefficient detection device
The problem of material expand coefficient inaccuracy.
To achieve the above object, the technical solution of the linear expansion coefficient detection device of the utility model is：
Technical solution 1：Linear expansion coefficient detection device, including heating furnace, the heating furnace both ends be equipped with the first folder and
Second folder, be respectively equipped on first folder and the second folder in heating-furnace intracavitary for sample to be tested to be clamped
The first clamping part between two folders and the second clamping part, first folder and at least one be equipped with of the second folder are used for
Detect the pressure sensor of sample to be tested pressure.
Advantageous effect：Sample to be tested is clamped in heating-furnace intracavitary by two clamping parts, available by pressure sensor
The pressure that sample to be tested is subject to when initial.Then sample to be tested is heated by heating furnace, sample to be tested, which expands, to be caused to press from both sides
The pressure held between portion increases, and the pressure that sample to be tested at this time is subject to is obtained by pressure sensor.By heat front and back pressure difference and
The elasticity modulus of sample to be tested obtains the deflection of sample to be tested by data processing, and the line to obtain sample to be tested expands system
Number.Solve the problems, such as that material expand coefficient existing in the prior art is inaccurate.
Technical solution 2：On the basis of technical solution 1, the pressure sensor is equipped with temperature detecting module.Pressure passes
It is integrated with temperature detecting module on sensor, is convenient for measuring the installation and measurement of the device and the device for measuring pressure of temperature.
Technical solution 3：On the basis of technical solution 1 or 2, the heating furnace includes the cartridge heater for surrounding heating stove furnace chamber
With the insulating layer being arranged on the outside of cartridge heater.Heating furnace includes cartridge heater and insulating layer, is easy to reach in heating furnace and waits for testing temperature.
Technical solution 4：On the basis of technical solution 3, the cartridge heater includes cylinder liner, on the outside of the cylinder liner
Wall surface is equipped with the groove for winding resistance heating wire.Resistance heating wire is wrapped in the heating that lining in cylinder increases cartridge heater
Uniformity.
Technical solution 5：On the basis of technical solution 1 or 2, the pressure sensor is fixed on the first folder, described
First clamping part is made of pressure sensor.Pressure sensor constitutes the first clamping part, simplifies apparatus structure, and pressure detecting
It is more acurrate.
Technical solution 6：On the basis of technical solution 1 or 2, the linear expansion coefficient detection device further includes pedestal, institute
It states the first clamping part to be fixedly connected on the first folder, second clamping part one end releasable connection is another on the second folder
End be fixedly connected on pedestal, by the second clamping part can relative to the second folder movement sample to be tested is clamped in two folders
Between.Sample to be tested is compressed by the movement for the second clamping part being connected on the second folder, it is simple in structure, it is easy to operate.
Technical solution 7：On the basis of technical solution 6, second clamping part includes compressor arm, is set on the compressor arm
Have an external thread structure, second folder is equipped with the internal thread structure with compressor arm screw-thread fit, by rotatably compress bar with
Sample to be tested is clamped between two folders.Compressor arm is threadedly coupled the convenient compressor arm that passes through with the second folder by sample to be tested two
End is clamped between two folders.
Technical solution 8：On the basis of technical solution 1 or 2, second clamping part includes for positioning sample to be tested
Locating slot.Locating slot facilitates the second clamping part to sample to be tested positioning and clamping.
Technical solution 9：On the basis of technical solution 8, second clamping part includes compressor arm and is arranged in compressor arm
On locating piece, locating piece is equipped with locating slot, and the locating piece is made of ceramic materials.Ceramics are heated to be unlikely to deform, and can be prevented
It is only inaccurate due to being measured caused by clamping part temperature distortion.
Technical solution 10：On the basis of technical solution 1 or 2, first folder is arranged above the second folder.First
Folder is arranged along the vertical direction with the second folder, facilitates the installation test operation of sample to be tested.
Description of the drawings
Fig. 1 is the structural schematic diagram of the specific embodiment one of the linear expansion coefficient detection device of the utility model；
Fig. 2 is the structural schematic diagram of the specific embodiment two of the linear expansion coefficient detection device of the utility model；
In figure：1- nuts, the first folders of 2-, 3- studs, 4- insulating layers, 5- cylinder liners, 6- samples to be tested, 7- positioning
Part, the second folders of 8-, 9- compressor arms, 10- pedestals, 11- rubber end sockets, 12- integrated sensors, 13- electrical measurement conducting wires, 14- data
Amplifier, 15- data collection instrument, 16-PC computers, 17- heating stove furnace chambers, 18- resistance heating wires, 90- compressor arms, the bottoms 101-
Seat, 30- studs, 100- nuts.
Specific implementation mode
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
The specific embodiment one of the linear expansion coefficient detection device of the utility model, as shown in Figure 1, linear expansion coefficient detects
Device includes heating furnace and pedestal 10, and heating furnace both ends are equipped with the first folder 2 and the second folder 8, the first folder 2 and the second folder
Be respectively equipped on 8 in heating stove furnace chamber 17 for sample to be tested 6 is clamped in the first clamping part between two folders and
Second clamping part.For convenience of operation, while increasing measuring accuracy, the first folder 2 and the second folder 8 in the present embodiment are along upper
Lower direction setting, the first folder 2 are arranged above the second folder 8.In other embodiments, the first folder and the second folder can edges
It is horizontally arranged；First folder may also be arranged below the second folder.First folder 2 is equipped between two clamping parts of induction
The pressure sensor of pressing force, is additionally provided with the temperature detecting module for measuring temperature in heating stove furnace chamber 17, in the present embodiment
Temperature detecting module be arranged on pressure sensor, i.e., the pressure sensor in the present embodiment be collection pressure be with temperature detection
The integrated sensor 12 of one.Integrated sensor 12 not only facilitates the detection of temperature and pressure, and facilitates the installation of detection device
And positioning.In other embodiments, pressure sensor may be provided on the second folder；Temperature detecting module can with pressure sensor
Split settings；Pressure sensor also can respectively be arranged one on the first clamping part and the second clamping part；Temperature detecting module also may be used
It is arranged as required to two or more.Sample to be tested 6 is clamped in by two folders in heating stove furnace chamber 17, and integrated sensor 12 is passed through
The pressure that sample to be tested 6 is subject to when can be obtained initial.Then sample to be tested 6 is heated by heating furnace, sample to be tested 6 occurs swollen
The swollen pressure for causing sample to be tested 6 to receive increases, and obtains two clamping parts at this time by integrated sensor 12 and is applied to sample to be tested 6
On pressure, while the temperature of sample to be tested 6 is obtained by integrated sensor 12.The pressure being subject to by heating front and back sample to be tested 6
The elasticity modulus of force difference and sample to be tested obtains the deflection of sample to be tested by data processing, to obtain the line of sample to be tested
The coefficient of expansion.
In the present embodiment, heating stove furnace chamber 17 is surrounded by cylinder liner 5, on the outer side surface of the cylinder liner 5 on set
Fluted, resistance heating wire 18 for heating is wrapped in the cartridge heater of composition heating furnace in the groove of cylinder liner 5, cartridge heater
For being evenly heated to sample to be tested 6.It should be noted that：To increase the being heated evenly property of sample to be tested 6, in the present embodiment
18 uniform winding of resistance heating wire can design the winding density of resistance heating wire as needed on cylinder liner 5.In other realities
It applies in example, resistance heating wire can be directly wound on cylinder liner outer side surface；The side that resistance heating wire can wind or be laid with
Formula is arranged in cylinder liner cavity body or is arranged in cylinder liner wall surface.Simultaneously to prevent heat loss to the external world, cause
The efficiency of heating surface of heating furnace reduces, and insulating layer 4 is equipped on the outside of cartridge heater.For convenience of the processing and installation of heating furnace, this implementation
Cartridge heater in example is structure as a whole with insulating layer 4.In other embodiments, cartridge heater and insulating layer can be separate structure；
It can be not provided with heat insulation layer structure.This design of heating furnace can make the temperature in heating stove furnace chamber 17 be rapidly achieved setting stabilization,
Increase the temperature uniformity in heating stove furnace chamber 17 simultaneously, the sample to be tested 6 being located in heating stove furnace chamber 17 is made to be heated evenly, increases
Add measurement accuracy.
It should be noted that when carrying out the fixation of the first folder 2 and the second folder 8, heating furnace is first positioned over two folders
Then centre position between part will be fixed by nut 1 across the stud 3 of two folders, complete the first folder 2, second
Fixation between folder 8 and heating furnace.First folder, 2 center is equipped with the first folder through-hole, and integrated sensor 12 passes through the first folder
Part through-hole is in heating stove furnace chamber 17, and then integrated sensor 12 is fixed on the first folder 2 by fixing piece.For convenience
The fixation of integrated sensor 12 and simplify device, the integrated sensor 12 in the present embodiment constitutes the of first folder 2
One clamping part.In the present embodiment, integrated sensor 12 is fixed on by nut on the first folder 2, in other embodiments, is integrated
Sensor 12 can be fixed on by the fixed forms such as riveting, welding on the first folder 2.To prevent connection integrated sensor 12 and electricity
The connective stability for surveying conducting wire 13 is fixed in 12 upper end of integrated sensor by rubber end socket 11 and electrical measurement conducting wire 13.At other
Electrical measurement conducting wire can not have to additional fixed between integrated sensor in embodiment, only be connected by the line of electrical measurement conducting wire.
Second folder, 8 center also offers the second folder through-hole, and the second folder through-hole is equipped with the second clamping part, and described the
On the second folder, the other end is fixedly connected on pedestal 10 for one end releasable connection of two clamping parts.Second in the present embodiment
Clamping part is compressor arm 9, and it is helicitic texture that compressor arm 9, which is equipped with, and corresponding second folder through-hole is equipped with internal thread structure, leads to
It crosses between sample to be tested 6 is clamped in two folders by rotation compressor arm 9, it is simple in structure, it is easy to operate.In other embodiments, may be used
The other modes such as the gasket of multiple thermal deformation coefficient very littles are arranged by increase compression pole length or on compressor arm will be to be tested
Sample clamps.To prevent the thermal expansion deformation due to compressor arm 9 from causing to measure inaccurately, it is equipped with by ceramics in the upper end of compressor arm 9
Locating piece 7 made of material, locating piece 7 are equipped with the locating slot for carrying out horizontal direction positioning to sample to be tested 6.Compressor arm
9 other end with pedestal 10 by being welded and fixed, in other embodiments, can be connected through a screw thread between compressor arm and pedestal,
The modes such as riveting are fixedly connected.
To realize the measurement of the linear expansion coefficient detection device for Small variables, electrical measurement conducting wire 13 in the present embodiment
The other end is connect with 14 signal of data amplifier, is carried out at a series of amplifications to the data being collected by data amplifier 14
Reason, it is detectable to obtain Small variables data.For convenience of the processing to later data, 14 other end of data amplifier is connected in turn
Data collection instrument 15 and PC computers 16.By the data processing of collection and computer to data after amplification, finally in PC computers
The linear expansion coefficient value of sample to be tested 6 is obtained and shown on 16.In other embodiments, data amplifier can be not provided with；Also may be used
It is not provided with data collection instrument；Also PC computers can be not provided with；Also can the later stage voluntarily only be carried out by the numerical value that integrated sensor obtains
Data processing.
The specific implementation mode of the linear expansion coefficient detection device of the utility model：Heating furnace is placed on the first folder first
Suitable position between part 2 and the second folder 8 is simultaneously fixed with nut 1 and stud 3, then by the electrical measurement of integrated sensor 12
Conducting wire 13 is fixed on integrated sensor 12, and by 12 one end of integrated sensor stretch into heating stove furnace chamber 17 with sample to be tested
6 contacts, the other end are fixed on the first folder 2.Sample to be tested 6 is put into the locating slot of locating piece 7 later, and passes through second
Folder through-hole enters in heating stove furnace chamber 17.Drive compressor arm 9 will be to be tested relative to 8 movement of the second folder by rotary funace
6 upper end of sample is pressed on integrated sensor 12.Then data amplifier 14 is connect with electrical measurement conducting wire 13, then successively by data
Amplifier 14 is connect with data collection instrument 15, and data collection instrument 15 is connected on PC computers 16.Also it can suitably adjust as needed
The assembling sequence of each component before test.It is finally powered that heating furnace heat measuring and obtains the linear expansion coefficient of sample to be tested 6.
After the completion of test, furnace cooling to be heated but after, rotary funace takes out sample to be tested 6 from the second folder through-hole.Line expansion system
The correlation that number detection device can be used for synchronism detection linear expansion coefficient is a small amount of, has sample to be tested heating uniformity good；In addition, should
Linear expansion coefficient structure of the detecting device is simple, easy to use, the advantages of can effectively improving the precision of linear expansion coefficient.It solves existing
There is the problem of material expand coefficient inaccuracy present in technology.
The specific embodiment two of the linear expansion coefficient detection device of the utility model, the linear expansion coefficient with the utility model
The specific embodiment one of detection device is compared, and is differed only in：As shown in Fig. 2, the second clamping part includes compressor arm 90, compressor arm
90 are polished rod and can be slided up and down with respect to the second folder, are welded and fixed on pedestal 100 there are two stud 30, stud 30 and second presss from both sides
Part is threadedly coupled, between sample to be tested is clamped in two folders by rotating nuts 100 drive the second folder to move.
Claims (10)
1. linear expansion coefficient detection device, including heating furnace, characterized in that the heating furnace both ends are equipped with the first folder and second
Folder, be respectively equipped on first folder and the second folder in heating-furnace intracavitary for sample to be tested to be clamped in two
The first clamping part between folder and the second clamping part, first folder and the second folder are at least one equipped with for detecting
The pressure sensor of sample to be tested pressure.
2. linear expansion coefficient detection device according to claim 1, characterized in that the pressure sensor is equipped with temperature
Detection module.
3. linear expansion coefficient detection device according to claim 1 or 2, characterized in that the heating furnace includes surrounding to add
The cartridge heater of hot stove furnace chamber and the insulating layer being arranged on the outside of cartridge heater.
4. linear expansion coefficient detection device according to claim 3, characterized in that the cartridge heater includes cylinder liner,
The cylinder liner outer side surface is equipped with the groove for winding resistance heating wire.
5. linear expansion coefficient detection device according to claim 1 or 2, characterized in that the pressure sensor is fixed on
On first folder, first clamping part is made of pressure sensor.
6. linear expansion coefficient detection device according to claim 1 or 2, characterized in that the linear expansion coefficient detection dress
It further includes pedestal to set, and first clamping part is fixedly connected on the first folder, and second clamping part one end releasable connection exists
On second folder, the other end is fixedly connected on pedestal, by the second clamping part can relative to the second folder movement with will be to be measured
Sample is clamped between two folders.
7. linear expansion coefficient detection device according to claim 6, characterized in that second clamping part includes compressing
Bar, the compressor arm are equipped with external thread structure, and second folder is equipped with the internal thread structure with compressor arm screw-thread fit,
By rotatably compressing bar so that sample to be tested to be clamped between two folders.
8. linear expansion coefficient detection device according to claim 1 or 2, characterized in that second clamping part includes using
In the locating slot of positioning sample to be tested.
9. linear expansion coefficient detection device according to claim 8, characterized in that second clamping part includes compressor arm
With the locating piece being arranged on compressor arm, locating piece is equipped with locating slot, and the locating piece is made of ceramic materials.
10. linear expansion coefficient detection device according to claim 1 or 2, characterized in that first folder setting is the
Above two folders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721724913.3U CN207636528U (en) | 2017-12-12 | 2017-12-12 | Linear expansion coefficient detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721724913.3U CN207636528U (en) | 2017-12-12 | 2017-12-12 | Linear expansion coefficient detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207636528U true CN207636528U (en) | 2018-07-20 |
Family
ID=62863158
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721724913.3U Expired - Fee Related CN207636528U (en) | 2017-12-12 | 2017-12-12 | Linear expansion coefficient detection device |
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| Country | Link |
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| CN (1) | CN207636528U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213353A (en) * | 2020-09-09 | 2021-01-12 | 中国科学院金属研究所 | Method for testing linear expansion coefficient |
| CN114252474A (en) * | 2021-12-22 | 2022-03-29 | 中钢新型材料股份有限公司 | High efficiency graphite thermal expansion tester |
| CN116149395A (en) * | 2023-04-18 | 2023-05-23 | 深圳华通威国际检验有限公司 | Medical material test environment temperature control box |
-
2017
- 2017-12-12 CN CN201721724913.3U patent/CN207636528U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213353A (en) * | 2020-09-09 | 2021-01-12 | 中国科学院金属研究所 | Method for testing linear expansion coefficient |
| CN114252474A (en) * | 2021-12-22 | 2022-03-29 | 中钢新型材料股份有限公司 | High efficiency graphite thermal expansion tester |
| CN116149395A (en) * | 2023-04-18 | 2023-05-23 | 深圳华通威国际检验有限公司 | Medical material test environment temperature control box |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 Termination date: 20181212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |