CN102269562A - Macroscopic pipe linear expansion coefficient tester - Google Patents
Macroscopic pipe linear expansion coefficient tester Download PDFInfo
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- CN102269562A CN102269562A CN2011101150587A CN201110115058A CN102269562A CN 102269562 A CN102269562 A CN 102269562A CN 2011101150587 A CN2011101150587 A CN 2011101150587A CN 201110115058 A CN201110115058 A CN 201110115058A CN 102269562 A CN102269562 A CN 102269562A
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- gathering sill
- expansion coefficient
- linear expansion
- tubing
- ball
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Abstract
The invention relates to a macroscopic pipe linear expansion coefficient tester. A group of directional guide rail device provided with 4 circulating ball grooves is arranged in a constant temperature water tank; one end of a pipe is fixed, and the other end of the pipe is freely telescopic and arranged in the directional guide rail device provided with the 4 circulating ball grooves; a distance between an upper guide rail and a lower guide rail is adjusted through a spring between the device to ensure that the pipe is contacted with a ball and the force of rolling friction is less than 5N (the two ends of the pipe are freely telescopic when the rolling friction is tested.). The free telescopic end of the pipe is contacted with a top plate of a measuring device, and when the length is changed, a value is read through a dial indicator of the measuring device. The invention has the advantages that: the macroscopic pipe linear expansion coefficient tester has high generality, has small system resistance in the testing process, can meet the requirement of testing the linear expansion coefficient of a low modulus pipe; the tested temperature range of the tester is wide; the tested pipe is not limited to a single-material plastic pipe, and the tester can be applied to testing the linear expansion coefficient of a composite pipeline; and in the testing process, a sample is easy to prepare.
Description
[technical field]
The present invention relates to pipe line expansion coefficient macro-test field, specifically, is a kind of macroscopic method tubing linear expansion coefficient tester.
[background technology]
New type plastic pipe is applied to feedwater, field of heating widely, more and more is subjected to numerous users' concern.Along with between macromolecular material and the development of the complex technique of macromolecular material and other materials, the composite pipe more than the Mi Yue is accepted by people more.After consulting related data, at present tubing linear expansion coefficient method of testing lacks relevant criterion and instrument, the related checkout equipment of indivedual enterprises exists that versatility is poor, when tubing expands suffered friction force big, can't test defective such as low modulus tubing.Type of the present invention has been designed and developed macroscopic method tubing linear expansion coefficient tester at above problem.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, a kind of macroscopic method tubing linear expansion coefficient tester is provided.
The objective of the invention is to be achieved through the following technical solutions:
A kind of macroscopic method tubing linear expansion coefficient tester, it is characterized in that, comprise directed track-type facilities (1), measurement mechanism (2) and constant temperature water tank three parts are formed, be provided with directed track-type facilities (1) and measurement mechanism (2) in constant temperature water tank, directed track-type facilities (1) and measurement mechanism (2) are by being connected with the free-ended top board of pipe under test.
Wherein, directed track-type facilities (1) comprising: cocycle ball gathering sill (4), following circulating ball gathering sill (7), base (8), locking ring (6), support bar (5), spring (9), nut (3), test tubing (10); Measurement mechanism (2) comprising: horizontal guide (13), slide block (11), support bar (14), top board (15), clock gauge (12), setting nut (16); Constant temperature water tank (17)
It is characterized in that:
A: the cocycle ball gathering sill (4) in the directed track-type facilities (1): two groups of circulating ball gathering sills are arranged, be covered with ball in the gathering sill, ball is spacing by certain special entity, guarantees that ball can freely roll but can not drop because of action of gravity;
B: two groups of circulating ball gathering sills in the cocycle ball gathering sill (4) in the directed track-type facilities (1), the centre is in line, and two ends be semicircle, guarantee that ball is than circulating rolling under the less friction;
C: the following circulating ball gathering sill (7) in the directed track-type facilities (1): two groups of circulating ball gathering sills are arranged, be covered with ball in the gathering sill, two groups of circulating ball gathering sills in the following circulating ball gathering sill (7), the centre is in line, two ends are semicircle, guarantee that steel ball is than circulating rolling under the less friction;
D: locking ring (6), restriction tubing one end can not freely stretch it;
E: the spacing between spring (9), nut (3) control cocycle ball gathering sill (4), the following circulating ball gathering sill (7) makes the mobile friction force of tubing in directed track-type facilities (1) less than 5N;
F: test tubing (10) in directed track-type facilities (1) only with cocycle ball gathering sill (4), down the steel ball in the straight-line segment in four groups of gathering sills in the circulating ball gathering sill (7) contacts reduction friction force;
G: top board (15), slide block (11) are connected with clock gauge (12), and after tubing had deflection, by top board (15), slide block (11) effect, clock gauge (12) can be read variation numerical value accurately;
H: slide block (11) is installed on the horizontal guide (13), and the friction force between slide block (11) and the horizontal guide (13) is less than 1N;
Have 4 groups of ball-recirculation gathering sills in the described directed track-type facilities (1), be in line in the middle of the gathering sill, two ends are semicircle, are covered with the certain diameter ball in the groove, and ball is circulating rolling in gathering sill.
Test tubing (10) in the described macroscopic method linear expansion coefficient tester contacts the friction force when testing tubing (10) dilatation in order to reduce by ball with cocycle ball gathering sill (4), following circulating ball gathering sill (7).
Macroscopic method tubing linear expansion coefficient tester of the present invention, its tested tubing one end is with fixed, one end freely stretches, be placed on cocycle ball gathering sill, the following circulating ball gathering sill, the ball that is covered with certain diameter in the gathering sill, be in line in the middle of the gathering sill, two ends are semicircle, and ball can circulating rolling.After tested tubing produces deflection,, realize the tubing dilatation easily by the rolling of ball.Deflection is by top board, slide block effect, and clock gauge can be read variation numerical value accurately.
Compared with prior art, good effect of the present invention is:
(1) by the steel circulating ball being installed on the upper and lower guide rail in the pipeline stationary installation and in deflection measurement instrument apparatus horizontal guide rail being installed, with the minimizing SR, thereby friction force is to the influence of measurement data in the minimizing measuring process; (2) highly versatile, when test SR little, can satisfy the test of low modulus tubing linear expansion coefficient; (3) temperature range of this device to test can from 20 ℃ in 95 ℃, scope is more extensive; (4) tubing of Ce Lianging is not limited to the plastic conduit of homogenous material, applicable to the measurement of compound pipeline complex pipeline linear expansion coefficient; (5) in measuring process, the preparation of sample is fairly simple, only need the tubing of intercepting certain-length to get final product, do not need to make desired sample in the GB, like this, significantly reduced the time that sample is produced, simultaneously, also avoided the change of the tubing physical property that causes because of sample preparation, measurement result more can be reacted sample situation in actual applications.
[description of drawings]
Fig. 1 is the synoptic diagram of directed track-type facilities, measurement mechanism and the constant temperature water tank of macroscopic method linear expansion coefficient tester;
Fig. 2 is directed guide rail cut-open view;
Fig. 3 is a circulating ball gathering sill synoptic diagram.
[embodiment]
The embodiment of a kind of macroscopic method tubing of the present invention linear expansion coefficient tester below is provided.
Embodiment 1
See also accompanying drawing 1-3, a kind of macroscopic method tubing linear expansion coefficient tester, it is characterized in that, comprise directed track-type facilities (1), measurement mechanism (2) and constant temperature water tank three parts are formed, be provided with directed track-type facilities (1) and measurement mechanism (2) in constant temperature water tank, directed track-type facilities (1) and measurement mechanism (2) are by being connected with the free-ended top board of pipe under test.
Wherein, directed track-type facilities (1) comprising: cocycle ball gathering sill (4), following circulating ball gathering sill (7), base (8), locking ring (6), support bar (5), spring (9), nut (3), test tubing (10); Measurement mechanism (2) comprising: horizontal guide (13), slide block (11), support bar (14), top board (15), clock gauge (12), setting nut (16); Constant temperature water tank (17)
It is characterized in that:
A: the cocycle ball gathering sill (4) in the directed track-type facilities (1): two groups of circulating ball gathering sills are arranged, be covered with ball in the gathering sill, ball is spacing by certain special entity, guarantees that ball can freely roll but can not drop because of action of gravity;
B: two groups of circulating ball gathering sills in the cocycle ball gathering sill (4) in the directed track-type facilities (1), the centre is in line, and two ends be semicircle, guarantee that ball is than circulating rolling under the less friction;
C: the following circulating ball gathering sill (7) in the directed track-type facilities (1): two groups of circulating ball gathering sills are arranged, be covered with ball in the gathering sill, two groups of circulating ball gathering sills in the following circulating ball gathering sill (7), the centre is in line, two ends are semicircle, guarantee that steel ball is than circulating rolling under the less friction;
D: locking ring (6), restriction tubing one end can not freely stretch it;
E: the spacing between spring (9), nut (3) control cocycle ball gathering sill (4), the following circulating ball gathering sill (7) makes the mobile friction force of tubing in directed track-type facilities (1) less than 5N;
F: test tubing (10) in directed track-type facilities (1) only with cocycle ball gathering sill (4), down the steel ball in the straight-line segment in four groups of gathering sills in the circulating ball gathering sill (7) contacts reduction friction force;
G: top board (15), slide block (11) are connected with clock gauge (12), and after tubing had deflection, by top board (15), slide block (11) effect, clock gauge (12) can be read variation numerical value accurately;
H: slide block (11) is installed on the horizontal guide (13), and the friction force between slide block (11) and the horizontal guide (13) is less than 1N;
Have 4 groups of ball-recirculation gathering sills in the described directed track-type facilities (1), be in line in the middle of the gathering sill, two ends are semicircle, are covered with the certain diameter ball in the groove, and ball is circulating rolling in gathering sill.
Test tubing (10) in the described macroscopic method linear expansion coefficient tester contacts the friction force when testing tubing (10) dilatation in order to reduce by ball with cocycle ball gathering sill (4), following circulating ball gathering sill (7).
With the tubular product sample of producing, as Fig. 2, be placed between cocycle ball gathering sill 3 and the following circulating ball gathering sill 4 middle two row's balls, tubing one end is fixed, the other end freely stretches and is placed in the directed track-type facilities that has 4 circulating ball grooves, by the spacing that the spring 8 between setting nut 7 and device is regulated upper rails and lower guideway, guarantee to keep in touch between tubing and ball and force of rolling friction less than 5N (when testing rolling friction all freely stretch in two ends); Again the pipeline stationary installation that fixes is put into water tank; Tubing freely stretches to hold and contacts with the measurement mechanism top board, will inject water in the Water Tank with Temp.-controlled, and the water yield was flooded upper rail; Regulate the horizontal guide rail level in the measurement mechanism, and the number of degrees of adjusting milscale make zero; Open heating system again, set temperature and time, observe and write down test figure at last, and calculate linear expansion coefficient according to correlation formula.
Little, the macroscopic method tubing linear expansion coefficient tester that can satisfy low modulus tubing linear expansion coefficient test of SR when design of the present invention is a kind of highly versatile, test.By the steel circulating ball being installed on the upper and lower guide rail in the pipeline stationary installation and in deflection measurement instrument apparatus horizontal guide rail being installed, with the minimizing SR, thereby friction force is to the influence of measurement data in the minimizing measuring process; The temperature range of this device to test can from 20 ℃ in 95 ℃, scope is more extensive; The tubing of measuring also is not limited to the plastic conduit of homogenous material, applicable to the measurement of compound pipeline complex pipeline linear expansion coefficient; In measuring process, the preparation of sample is fairly simple, only need the tubing of intercepting certain-length to get final product, do not need to make desired sample in the GB, like this, significantly reduced the time that sample is produced, simultaneously, also avoided the change of the tubing physical property that causes because of sample preparation, measurement result more can be reacted sample situation in actual applications.
Apparatus of the present invention modern design, reasonable idea, have simple in structure, save advantages such as material, easy operating.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (7)
1. macroscopic method tubing linear expansion coefficient tester, it is characterized in that, comprise directed track-type facilities (1) measurement mechanism (2) and constant temperature water tank (17) three parts composition, be provided with directed track-type facilities (1) and measurement mechanism (2) in constant temperature water tank (17), directed track-type facilities (1) and measurement mechanism (2) are by being connected with the free-ended top board of pipe under test.
2. macroscopic method tubing linear expansion coefficient tester as claimed in claim 1, described directed track-type facilities (1) comprising: cocycle ball gathering sill (4), following circulating ball gathering sill (7), base (8), locking ring (6), support bar (5), spring (9), nut (3), test tubing (10); It is characterized in that the cocycle ball gathering sill (4) in the described directed track-type facilities (1): two groups of circulating ball gathering sills are arranged, be covered with ball in the gathering sill.
3. macroscopic method tubing linear expansion coefficient tester as claimed in claim 2 is characterized in that, two groups of circulating ball gathering sills in the cocycle ball gathering sill (4) in the described directed track-type facilities (1), and the centre is in line, and two ends are semicircle.
4. macroscopic method tubing linear expansion coefficient tester as claimed in claim 2, it is characterized in that, following circulating ball gathering sill (7) in the described directed track-type facilities (1): two groups of circulating ball gathering sills are arranged, be covered with ball in the gathering sill, two groups of circulating ball gathering sills in the following circulating ball gathering sill (7), the centre is in line, and two ends are semicircle.
5. macroscopic method tubing linear expansion coefficient tester as claimed in claim 2 is characterized in that, described locking ring (6), and restriction tubing one end can not freely stretch it; Spacing between spring (9), nut (3) control cocycle ball gathering sill (4), the following circulating ball gathering sill (7) makes the mobile friction force of test tubing in directed track-type facilities (1) less than 5N.
6. macroscopic method tubing linear expansion coefficient tester as claimed in claim 1, described measurement mechanism (2) comprising: horizontal guide (13), slide block (11), support bar (14), top board (15); It is characterized in that, test tubing (10) directed track-type facilities (1) in cocycle ball gathering sill (4), time circulating ball gathering sill (7) in four groups of gathering sills in straight-line segment in steel ball contact; Top board (15), slide block (11) are connected with clock gauge (12); Slide block (11) is installed on the horizontal guide (13), and the friction force between slide block (11) and the horizontal guide (13) is less than 1N.
7. macroscopic method tubing linear expansion coefficient tester as claimed in claim 1 is characterized in that, the test tubing (10) in the described macroscopic method linear expansion coefficient tester contacts with cocycle ball gathering sill, following circulating ball gathering sill by ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110115058.7A CN102269562B (en) | 2011-05-05 | Macroscopic pipe linear expansion coefficient tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110115058.7A CN102269562B (en) | 2011-05-05 | Macroscopic pipe linear expansion coefficient tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102269562A true CN102269562A (en) | 2011-12-07 |
| CN102269562B CN102269562B (en) | 2016-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839357A (en) * | 2022-03-25 | 2022-08-02 | 河海大学 | Device and method for testing frost heaving stress and frost heaving strain of porous asphalt mixture |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04279849A (en) * | 1991-01-29 | 1992-10-05 | Tokyo Seiko Co Ltd | Measurement of coefficient of linear expansion and device therefor |
| US5189807A (en) * | 1991-02-08 | 1993-03-02 | C. E. Johansson Ab | Method and arrangement for determining the linear (heat) expansion of elongated bodies |
| CN1293319A (en) * | 1999-10-18 | 2001-05-02 | 速睦喜股份有限公司 | Ball jacket |
| CN201203405Y (en) * | 2008-03-12 | 2009-03-04 | 洛阳市谱瑞慷达耐热测试设备有限公司 | Displacement measuring device for dilatometer |
| CN201584087U (en) * | 2009-12-30 | 2010-09-15 | 杭州大华仪器制造有限公司 | Experimental device for testing thermal expansion coefficient |
| CN201589757U (en) * | 2010-01-11 | 2010-09-22 | 浙江伟星新型建材股份有限公司 | Plastic pipe linear expansion coefficient tester |
| CN202582469U (en) * | 2011-05-05 | 2012-12-05 | 上海伟星新型建材有限公司 | Macromethod tubing linear expansion coefficient tester |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04279849A (en) * | 1991-01-29 | 1992-10-05 | Tokyo Seiko Co Ltd | Measurement of coefficient of linear expansion and device therefor |
| US5189807A (en) * | 1991-02-08 | 1993-03-02 | C. E. Johansson Ab | Method and arrangement for determining the linear (heat) expansion of elongated bodies |
| CN1293319A (en) * | 1999-10-18 | 2001-05-02 | 速睦喜股份有限公司 | Ball jacket |
| CN201203405Y (en) * | 2008-03-12 | 2009-03-04 | 洛阳市谱瑞慷达耐热测试设备有限公司 | Displacement measuring device for dilatometer |
| CN201584087U (en) * | 2009-12-30 | 2010-09-15 | 杭州大华仪器制造有限公司 | Experimental device for testing thermal expansion coefficient |
| CN201589757U (en) * | 2010-01-11 | 2010-09-22 | 浙江伟星新型建材股份有限公司 | Plastic pipe linear expansion coefficient tester |
| CN202582469U (en) * | 2011-05-05 | 2012-12-05 | 上海伟星新型建材有限公司 | Macromethod tubing linear expansion coefficient tester |
Non-Patent Citations (1)
| Title |
|---|
| 叶慧群: "简易测量柔性材料线膨胀系数的方法", 《物理实验》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839357A (en) * | 2022-03-25 | 2022-08-02 | 河海大学 | Device and method for testing frost heaving stress and frost heaving strain of porous asphalt mixture |
| CN114839357B (en) * | 2022-03-25 | 2023-05-16 | 河海大学 | Device and method for testing frost heaving stress and frost heaving strain of porous asphalt mixture |
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| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI JIANKE TECHNICAL ASSESSMENT OF CONSTRUCTI Effective date: 20121114 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121114 Address after: 201404 Shanghai, Fengxian District Road, No. 4601 Applicant after: Shanghai Weixing New Building Materials Co., Ltd. Applicant after: Shanghai Jianke Technical Assessment of Construction Co., Ltd. Address before: 201404 Shanghai, Fengxian District Road, No. 4601 Applicant before: Shanghai Weixing New Building Materials Co., Ltd. |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |