阅读说明：本技术 用于测定管材热膨胀系数的支架和设备 (For measuring the bracket and equipment of tubing thermal expansion coefficient ) 是由 王晓婧 刘艳红 李怀林 鲁仰辉 郑明珉 夏海鸿 于 2019-08-15 设计创作，主要内容包括：本申请公开了一种用于测定管材热膨胀系数的支架和设备,所述支架包括：底座,所述底座具有用于与测定热膨胀系数的设备的推杆相连的安装位；托盘,所述托盘与所述底座相连,且所述托盘具有用于支撑待测试的样品的弧形的支撑面。本申请的支架,由于采用弧形的支撑面来支撑管材样品进行测试,可以利用重力实现样品的自动对中,避免了普通针入法在平面上放置管材样品不稳定性的问题,同时因为弧形的限制,测试过程中样品更易固定,不易移位,且支架可以利用设备现有的推杆定位,设计和替换成本低。(This application discloses a kind of for measuring the bracket and equipment of tubing thermal expansion coefficient, and the bracket includes: pedestal, and the pedestal has the installation position for being connected with the push rod of the equipment of measurement thermal expansion coefficient；Pallet, the pallet are connected with the pedestal, and the pallet has the supporting surface for the arc for being used to support sample to be tested.The bracket of the application, Pipe samples are supported to be tested due to the supporting surface using arc, it can use the automatic centering that gravity realizes sample, avoid the problem of common needling method places Pipe samples unstability in the plane, simultaneously as the limitation of arc, sample is more fixed easily in test process, is not easy to shift, and bracket can use the existing push rod positioning of equipment, design low with alternative costs.)

1. a kind of for measuring the bracket of tubing thermal expansion coefficient characterized by comprising

Pedestal, the pedestal have the installation position for being connected with the push rod of the equipment of measurement thermal expansion coefficient；

Pallet, the pallet are connected with the pedestal, and the pallet has the branch for the arc for being used to support sample to be tested Support face, the supporting surface are a part of straight cylindrical surfaces.

2. according to claim 1 for measuring the bracket of tubing thermal expansion coefficient, which is characterized in that the supporting surface Radian is α, α >=45 °.

3. according to claim 1 for measuring the bracket of tubing thermal expansion coefficient, which is characterized in that the supporting surface Radius is r, is met: 1.5mm≤r≤16mm.

4. according to claim 1 for measuring the bracket of tubing thermal expansion coefficient, which is characterized in that the supporting surface Span is L1, is met: 2mm≤L1≤18mm.

5. according to claim 1 for measuring the bracket of tubing thermal expansion coefficient described in any one of -4, which is characterized in that institute Pallet is stated with top surface, the bottom surface for being connected to the side of the top end and being connected with the side, the supporting surface setting In the top surface, the angle of the joint face of the bottom surface and the pedestal is β, is met: 90 °≤β≤140 °.

6. according to claim 1 for measuring the bracket of tubing thermal expansion coefficient described in any one of -4, which is characterized in that institute Pedestal is stated equipped with mounting groove, the mounting groove is opened wide in the bottom plate away from the pallet of the pedestal, and the mounting groove is formed The installation position, and the roof of the mounting groove is spaced apart with the supporting surface.

7. according to claim 6 for measuring the bracket of tubing thermal expansion coefficient, which is characterized in that the mounting groove The minimum range of roof to the supporting surface is L2, is met: L2 >=0.5mm.

8. according to claim 6 for measuring the bracket of tubing thermal expansion coefficient, which is characterized in that the mounting groove is Cylinder, the pedestal are cuboid.

9. according to claim 1 for measuring the bracket of tubing thermal expansion coefficient described in any one of -4, which is characterized in that institute Bracket is stated to be made of aluminium oxide.

10. a kind of equipment for measuring tubing thermal expansion coefficient characterized by comprising

Push rod, bracket as claimed in any one of claims 1-9 wherein, thimble and displacement sensor, the bracket pass through the peace Dress position is installed on the push rod, and the thimble is for only to the surface away from the supporting surface of the sample to be tested, institute Displacement sensors are used to detect the displacement of the push rod.

Technical field

The application belongs to the hot physical property measurement technical field of material, in particular to one kind for measuring tubing thermal expansion The bracket of coefficient and equipment for measuring tubing thermal expansion coefficient.

Background technique

Any substance all has certain volume under certain temperature, pressure.When the temperature is changed, the volume of substance is also Correspondingly change.The phenomenon that volume or length of substance increase with temperature and increased is known as thermally expanding.Thermal expansion coefficient is material One of Main physical property, it is the important indicator for measuring material thermal stability quality.In materials science field, for difference The thermal expansion amount measurement and coefficient of expansion measurement of material are always a more important project, for the hot property of research material And inherent phase transformation law etc. has great importance.

When substance is to have effigurate solid, measurement volume change shows as the change in size of three-dimensional, claims For body expansion.The measurement of a direction length variation can also be carried out, referred to as line expands, and it is swollen to generally use line when measuring inorganic material Swollen method.The measuring method of linear expansion coefficient has very much, such as shows poor method (also referred to as quartz dilatometer method), Double-Line Method, optical interferometry, again Amount temperature meter method etc..In these test methods, to show that poor method has extensive Practical significance.Used by showing poor method both at home and abroad There are many test equipment, there is vertical dilatometer and two kinds of horizontal expander instrument.Vertical dilatometer is alternatively referred to as thermomechanical analyzer.Generally Thermomechanical analyzer can only test blocky or strip sample, sample complex-shaped for tubing etc., especially respectively to different Property sample, since its center is difficult to determining and fixed, thermomechanical analyzer in the related technology is difficult to test shape Complicated sample.

Summary of the invention

The application aims to solve at least one of the technical problems existing in the prior art.

The application proposes a kind of for measuring the bracket of tubing thermal expansion coefficient, comprising: pedestal, the pedestal, which has, to be used for The installation position being connected with the push rod of the equipment of measurement thermal expansion coefficient；Pallet, the pallet are connected with the pedestal, and the support Disk has the supporting surface for the arc for being used to support sample to be tested, and the supporting surface is a part of straight cylindrical surfaces.

The bracket of the embodiment of the present application supports Pipe samples to be tested, Ke Yili due to the supporting surface using arc The automatic centering that sample is realized with gravity, avoids the problem of common needling method places Pipe samples unstability in the plane, Simultaneously as the limitation of arc, sample is more fixed easily in test process, is not easy to shift, and bracket can use that equipment is existing to be pushed away Bar positioning, is designed low with alternative costs.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the radian of the supporting surface is α, α ≥45°。

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the radius of the supporting surface is r, full Foot: 1.5mm≤r≤16mm.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the span of the supporting surface is L1, Meet: 2mm≤L1≤18mm.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the pallet has top surface, connection Side in the top end and the bottom surface that is connected with the side, the supporting surface are set to the top surface, the bottom surface Angle with the joint face of the pedestal is β, is met: 90 °≤β≤140 °.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the pedestal is equipped with mounting groove, institute The bottom plate away from the pallet that mounting groove is stated in the pedestal opens wide, and the mounting groove forms the installation position, and the peace The roof of tankage is spaced apart with the supporting surface.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the roof of the mounting groove is described in The minimum range of supporting surface is L2, is met: L2 >=0.5mm.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the mounting groove is cylinder, institute Stating pedestal is cuboid.

According to the embodiment of the present application for measuring the bracket of tubing thermal expansion coefficient, the bracket is made of aluminium oxide.

The application also proposed a kind of equipment for measuring thermal expansion coefficient, comprising: push rod, bracket, thimble and displacement Sensor, the bracket are installed on the push rod by the installation position, and the thimble is for only supporting the sample to be tested The surface away from the supporting surface, institute's displacement sensors are used to detect the displacement of the push rod.

Possessed advantage is identical compared with the existing technology with above-mentioned bracket for the equipment, and details are not described herein.

The additional aspect and advantage of the application will be set forth in part in the description, and will partially become from the following description It obtains obviously, or recognized by the practice of the application.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the application will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:

Fig. 1 is the schematic front view of the bracket of the application one embodiment；

Fig. 2 is the schematic top plan view of the bracket of the application one embodiment；

Fig. 3 is the schematic front view of the bracket of second embodiment of the application.

Appended drawing reference:

Bracket 100,

Pallet 10, supporting surface 11, top surface 12, side 13, bottom surface 14,

Pedestal 20, mounting groove 21,

Sample 200.

Specific embodiment

Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.

In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, limit There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.The application's In description, unless otherwise indicated, the meaning of " plurality " is two or more.

In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in application.

Below with reference to Fig. 1-Fig. 3 description according to the embodiment of the present application for measuring the bracket 100 of tubing thermal expansion coefficient.

As shown in Figure 1, the bracket 100 for measuring tubing thermal expansion coefficient according to the application one embodiment includes: Pedestal 20 and pallet 10.

Pedestal 20 has installation position, which is used to be connected with the push rod of the equipment of measurement thermal expansion coefficient, so that branch Frame 100 can be installed on equipment.

In actual execution, as shown in Figure 1, pedestal 20 can be equipped with mounting groove 21, back of the mounting groove 21 in pedestal 20 Bottom plate from pallet 10 opens wide, and mounting groove 21 forms installation position, and such push rod, which protrudes into mounting groove 21, can be realized determining for bracket 100 Position installation.

As depicted in figs. 1 and 2, pedestal 20 can be cuboid.Such as the bottom surface 14 of pedestal 20 be side length be 6mm just Rectangular, the height of pedestal 20 is 2mm-9.78mm.

The roof of mounting groove 21 is spaced apart with supporting surface 11, and a part of mounting groove 21 extends to pallet 10, still For mounting groove 21 not through supporting surface 11, the rigidity of such supporting surface 11 is big, is unlikely to deform, as shown in Figure 1, the roof of mounting groove 21 Minimum range to supporting surface 11 is L2, is met: L2 >=0.5mm.The rigidity of supporting surface 11 in this way is big, is unlikely to deform, can be to prevent Only supporting surface 11 deforms the influence to measuring accuracy.

As depicted in figs. 1 and 2, mounting groove 21 can be cylinder, and cylindrical mounting groove 21 is convenient for pushing away with cylindrical Bar cooperation, in actual execution, the diameter of mounting groove 21 can be 3mm, and depth can be 9.78mm.

Pallet 10 is connected with pedestal 20, and pallet 10 and the integrated molding of pedestal 20 or pallet 10 can pass through with pedestal 20 Welding, the structures such as clamping are connected.And pallet 10 has supporting surface 11, supporting surface 11 is arc, and supporting surface 11 is used to support to be measured The sample 200 of examination.

Bracket 100 is made of aluminium oxide, and pallet 10 is formed as one with pedestal 20, to prevent high temperature oxidation and corrosion, together When reduce bracket 100 itself thermal expansion influence.

Supporting surface 11 is a part of straight cylindrical surfaces, and such Pipe samples 200 (intercepting a part from tubing) can consolidate Ground is freely rolled to the center of supporting surface 11, in actual execution, 200 diameter of Pipe samples to be tested be 2mm extremely 30mm, wall thickness are 0.1mm to 12mm.

As shown in Figure 1, the radian of supporting surface 11 is α, α >=45 °, such supporting surface 11 is sufficiently large to support sample 200, than Such as α=66 °.

As shown in Figure 1, the radius of supporting surface 11 is r, meet: 1.5mm≤r≤16mm.Supporting surface in the size range 11 can be correspondingly used for the Pipe samples 200 that support diameter is 2mm to 30mm.

As shown in Figure 1, the span of supporting surface 11 is L1, meet: 2mm≤L1≤18mm.Supporting surface 11 in this way it is sufficiently large with Sample 200 is supported,

The bottom surface 14 that pallet 10 has top surface 12, is connected to the side 13 of 12 end of top surface and is connected with side 13, support Face 11 is set to top surface 12, and bottom surface 14 and the angle of the joint face of pedestal 20 are β, and meet: 90 °≤β≤140 °, top surface 12 includes The plane of 11 two sides of supporting surface 11 and supporting surface, the upper surface of pallet 10 a length of 20mm, width 6mm, 13 rectangle of side are a height of 3.25mm, width 6mm.

It is understood that the mounting groove 21 of 100 bottom end of bracket is set at the plug of push rod top in test process, Then compo pipe to be measured is intercepted into one section of circular arc formation sample 200 along axial, is put into the supporting surface 11 on 100 top of bracket, props up The arc radius of the supporting surface 11 of frame 100 is greater than the radius of sample 200 to be tested, when sample 200 to be tested is placed in bracket When 100 supporting surface 11, due to the gravity of sample 200, it is automatically scrolling to the center of supporting surface 11, then makes to set The needle point of standby thimble is contacted with the center of Pipe samples 200, and applies certain preloaded force.It is put into heating furnace, with Temperature change sample 200 generate deformation.The radial deformation of sample 200 can be obtained in displacement by testing push rod.

The bracket 100 of the application is suitable for measuring the radial thermal expansion coefficient of Pipe samples 200, especially for each to different The sample 200 of property, can accurately measure its radial thermal expansion coefficient.

The bracket 100 of the embodiment of the present application, due to supporting Pipe samples 200 to be surveyed using the supporting surface 11 of arc Examination can use the automatic centering that gravity realizes sample 200, avoid common needling method and place Pipe samples 200 in the plane The problem of unstability, simultaneously as the limitation of arc, sample 200 is more fixed easily in test process, is not easy to shift, and bracket 100 can use the existing push rod positioning of equipment, design low with alternative costs.

It following is a brief introduction of two kinds of embodiments.

As shown in Figure 1, bracket 100 includes: pedestal 20 and pallet 10.

Pedestal 20 is equipped with cylindrical mounting groove 21, and the top of pallet 10 is equipped with arc-shaped supporting surface 11.Mounting groove 21 For being connected with push rod.Arc-shaped supporting surface 11 is to accept sample 200 to be tested.The material selection aluminium oxide of bracket 100, To prevent high temperature oxidation and corrosion, while reducing the influence of bracket 100 itself thermal expansion.

Pedestal 20 is square, side length 6mm, is highly 7.09mm.21 diameter of mounting groove is 3mm, depth 9.78mm. The a length of 20mm in top surface 12 of pallet 10, width 6mm, the side a length of 3.25mm of 13 rectangle of pallet 10, width 6mm, 100 support of bracket The contact surface angle of disk 10 and 100 bottom end square column of bracket is 111 °.The diameter of supporting surface 11 is more straight than the Pipe samples 200 of test Diameter wants larger, and the center radial heat of progress circular arc for making test sample 200 be rolled to supporting surface 11 by gravity is swollen The measurement of swollen coefficient.And the lowest part of supporting surface 11 need to be greater than 0.5mm apart from mounting groove 21.Pipe samples 200 to be tested are straight Diameter is 9.5mm, wall thickness 0.57mm.100 top arc diameter of bracket is 22mm, and 100 circular arc span of bracket is 11.5mm.

In test process, by 21 sets of mounting groove at the plug of push rod top, then tested compo pipe is intercepted along axial One section of circular arc is put into the supporting surface 11 among 100 top of bracket, and due to the effect of gravity, Pipe samples 200 can nature swing To center, mode is then entered using equipment needle, contacts the needle point of thimble with the center of circular arc, and applied centainly Preloaded force.It is put into heating furnace, as temperature change sample 200 generates deformation.Pass through highly sensitive displacement sensor (LVDT) displacement of push rod is detected.

As shown in figure 3, bracket 100 includes: pedestal 20 and pallet 10.

Pedestal 20 is equipped with cylindrical mounting groove 21, and the top of pallet 10 is equipped with arc-shaped supporting surface 11.Mounting groove 21 For being connected with push rod.Arc-shaped supporting surface 11 is to accept sample 200 to be tested.The material selection aluminium oxide of bracket 100, To prevent high temperature oxidation and corrosion, while reducing the influence of bracket 100 itself thermal expansion.

Pedestal 20 is square, side length 6mm, is highly 7.09mm.21 diameter of mounting groove is 3mm, depth 9.78mm. The a length of 20mm in top surface 12 of pallet 10, width 6mm, the side a length of 3.25mm of 13 rectangle of pallet 10, width 6mm, 100 support of bracket The contact surface angle of disk 10 and 100 bottom end square column of bracket is 111 °.The diameter of supporting surface 11 is more straight than the Pipe samples 200 of test Big 1 times of diameter or more, the center radial heat of progress circular arc for making test sample 200 be rolled to supporting surface 11 by gravity is swollen The measurement of swollen coefficient.And 11 lowest part distance bracket of supporting surface, 100 bottom inner portion cylindrical hollow need to be greater than 0.5mm.To be tested 200 diameter of Pipe samples is 9.5mm, wall thickness 0.57mm.100 top arc diameter of bracket is 32mm, 100 circular arc span of bracket For 17.41mm.

In test process, by 21 sets of mounting groove at the plug of push rod top, then tested compo pipe is intercepted along axial One section of circular arc is put into the supporting surface 11 among 100 top of bracket, and due to the effect of gravity, Pipe samples 200 can nature swing To center, mode is then entered using equipment needle, contacts the needle point of thimble with the center of circular arc, and applied centainly Preloaded force.It is put into heating furnace, as temperature change sample 200 generates deformation.Pass through highly sensitive displacement sensor (LVDT) displacement of push rod is detected.

Disclosed herein as well is a kind of equipment for measuring tubing thermal expansion coefficient.

The equipment includes: push rod, bracket 100, thimble and displacement sensor, and bracket 100 is installed on push rod by installation position, Thimble is for only to the surface away from supporting surface 11 of sample 200 to be tested, displacement sensor to be used to detect the displacement of push rod. Push rod can be made of aluminium oxide, to prevent the measuring accuracy of throw-out lever thermal expansion influence entirety.Bracket 100 is any of the above-described kind of reality Apply the bracket 100 of example.

The equipment for measuring thermal expansion coefficient of the application, the sample of various models can be realized by replaceable holder 100 The measurement of product 200.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the application.In the present specification, to above-mentioned term Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description Point can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that embodiments herein, it will be understood by those skilled in the art that: not A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle and objective of the application, this The range of application is defined by the claims and their equivalents.