CN201681020U - Fixture for toroidal tensile test of thin pipe - Google Patents
Fixture for toroidal tensile test of thin pipe Download PDFInfo
- Publication number
- CN201681020U CN201681020U CN2010201914873U CN201020191487U CN201681020U CN 201681020 U CN201681020 U CN 201681020U CN 2010201914873 U CN2010201914873 U CN 2010201914873U CN 201020191487 U CN201020191487 U CN 201020191487U CN 201681020 U CN201681020 U CN 201681020U
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- semicolumn
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- anchor clamps
- clamp
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Abstract
The utility model relates to a fixture for the toroidal tensile test of a thin pipe, which comprises two clamping bodies which are arranged up and down and have mutually symmetrical shapes, wherein each clamping body comprises an installation part, a support part and a semi-cylindrical part, the support parts are connected with the installation parts in a dismountable way, the center lines of the support parts are vertically arranged, the semi-cylindrical parts are fixedly arranged on the opposite side faces of the two support parts, the end faces of the semi-cylindrical parts are vertical to the side faces of the corresponding support parts, the outer diameter of the end faces of the two semi-cylindrical parts is the same, and the two semi-cylindrical parts are mutually adhered into a cylinder. The fixture has simple structure and larger practicability and is especially suitable for the toroidal tensile test of a thin pipe with small size.
Description
Technical field
The utility model relates to a kind of anchor clamps, relates in particular to a kind of being used for light wall pipe is carried out the anchor clamps that the hoop tension test is used.
Background technology
We know that for the pipe fitting that uses under the different occasions, the size that need can meet with stresses to the hoop of pipe fitting to be used is measured.And for the cladding nuclear fuels pipe, this kind body is thinner, adopts zircaloy to make usually, because under the condition that this kind light wall pipe applied environment is high temperature, fission gas to be existed, this just requires to press in its pipe greater than the pipe external pressure, to tube wall and the circumferential stress of Yan Shiguan greater than meridional stress.Therefore, body design and appraiser must consider the circumferential mechanical performance of material.In general, the circumferential mechanical performance adopts the hoop performance test to implement usually.
The test of existing hoop performance can be passed through two kinds of methods:
(1) interior platen press: realize the hoop performance test by exerting pressure;
(2) opposite opened pulling method: adopt similar opposite opened tension plate method to realize the hoop performance test;
For interior platen press, platen press may be brought certain danger in considering at high temperature.Therefore do not recommend to use.And for the opposite opened pulling method, the present ISO 8496 " becket is to stretching test method " of ISO (International Standards Organization), its applicability only at external diameter greater than 150mm and internal diameter tubing greater than 100mm, and the measuring method of extensibility is not mentioned.In U.S. E8-90 and D2290-87 standard, its scope is similar to ISO (International Standards Organization), all is not suitable for the small size tubing of present nuclear fuel.
The utility model content
The purpose of this utility model is to provide a kind of anchor clamps that the tension test of small size light wall pipe hoop is used that are adapted to.
For achieving the above object, the technical scheme that the utility model adopted is: a kind of light wall pipe hoop tension test anchor clamps, it comprises two upper and lower settings and the symmetrical clamp of shape, each clamp comprises installation portion, removably connect with installation portion and the support portion of the vertical setting of center line, be fixedly installed on the opposite flank, two support portions and end face and the perpendicular semicolumn portion in side, support portion accordingly, described two semicolumn end surface external diameters are identical, and two semicolumn portions fit and are a right cylinder.
Further, described installation portion is a screw rod.
Described support portion is a cuboid.
Described semicolumn portion external diameter is 2～5mm.
Because the employing of technique scheme, the utility model compared with prior art has the following advantages: when carrying out the tension test of body circumferential force, at first body to be measured is passed the semicolumn portion on clamp of the utility model, then the semicolumn portion of another clamp is also penetrated in the body and with the semicolumn portion of last clamp and dock, like this, body just is set on cylindrical that two semicolumn portions form, by respectively the installation portion of clamp being connected with drawing machine, drawing machine is used to provide power up and down, simultaneously, thermopair is bind near on the holder wall of body, temperature by the control thermopair, drawing machine spurs installation portion simultaneously up and down, like this, two clamp motions up and down respectively under the effect of power up and down, thereby the semicolumn of the semicolumn portion of upper clamp and lower clamp part from, making that the body hoop is stressed is stretched gradually, thereby can carry out reliable hoop tension test, the utility model clamp structure is simple, be particularly suited for the usefulness of the hoop tension test of small size light wall pipe, have bigger practicality.
Description of drawings
Accompanying drawing 1 is the front view of the utility model light wall pipe hoop tension test with anchor clamps;
Accompanying drawing 2 is the stereographic map of the utility model light wall pipe hoop tensile sample with anchor clamps;
Accompanying drawing 3 is an A place zoomed-in view in the accompanying drawing 2;
Wherein: 1, upper clamp; 11, installation portion; 12, support portion; 13, semicolumn portion;
2, lower clamp; 11, installation portion; 12, support portion; 13, semicolumn portion;
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present utility model is described:
Anchor clamps as shown in Figure 1 to Figure 3, it is used for the tension test of body hoop, mainly form by the clamp 1,2 of two symmetries, during use, clamp 1,2 is in installation site up and down, so at this, two clamps shown in the figure are called upper clamp 1 and lower clamp 2, below upper clamp 1 and lower clamp 2 are introduced respectively:
The utility model anchor clamps are applicable to the tension test of small size light wall pipe, in use, at first upper clamp 1 is connected with cupping machine, the body sample is enclosed within its semicolumn portion 13, and the half-round 23 with lower clamp 2 also penetrates in the body sample then, makes up and down the setting that matches of two semicolumn portions, lower clamp 2 is connected with the lower end of cupping machine again, like this, just can load load deflection speed 0.5mm/min by drawing machine to body; Under the situation of not considering friction force, acted on inside pipe wall by the surface of contact normal direction substantially in outer year that is applied, be equivalent to the interior pressure effect of pipeline, carrying F outward has direct equivalent relation with pressure P in the equivalence, for:
F＝2RP
Simultaneously, thermopair is bind near on the holder wall of sample, and is as the criterion with this thermopair and carries out the control of specimen temperature.When specimen temperature is heated to 400 ℃ of set points of temperature, be incubated 30 minutes.Can carry out record to the load displacement curve of body in the loading procedure, can record the hoop mechanical property of whole tubing by record data.
By the anchor clamps of present embodiment, can conveniently realize test, thereby guarantee the reliable application of body under the specific occasion body hoop mechanical property.
The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (4)
1. light wall pipe hoop tension test anchor clamps, it is characterized in that: it comprises two upper and lower settings and the symmetrical clamp (1 of shape, 2), each clamp (1,2) comprise installation portion (11,21), with installation portion (11,21) removably connect and the support portion (12 of the vertical setting of center line, 22), be fixedly installed on two support portions (12,22) on the opposite flank and end face and corresponding support portion (12,22) the perpendicular semicolumn portion (13 in side, 23), described two semicolumn portions (13,23) the end face external diameter is identical, and two semicolumn portions (13,23) fit and be a right cylinder.
2. a kind of light wall pipe hoop tension test anchor clamps according to claim 1 is characterized in that: described installation portion (11,21) is a screw rod.
3. a kind of light wall pipe hoop tension test anchor clamps according to claim 1 is characterized in that: described support portion (12,22) are cuboid.
4. a kind of light wall pipe hoop tensile sample anchor clamps according to claim 1 is characterized in that: described semicolumn portion (13,23) external diameter is 2～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201914873U CN201681020U (en) | 2010-05-14 | 2010-05-14 | Fixture for toroidal tensile test of thin pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201914873U CN201681020U (en) | 2010-05-14 | 2010-05-14 | Fixture for toroidal tensile test of thin pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681020U true CN201681020U (en) | 2010-12-22 |
Family
ID=43346060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201914873U Expired - Fee Related CN201681020U (en) | 2010-05-14 | 2010-05-14 | Fixture for toroidal tensile test of thin pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681020U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048189A (en) * | 2012-11-23 | 2013-04-17 | 宁波电工合金材料有限公司 | Test fixture for binding strength of composite contact |
| CN104165811A (en) * | 2014-08-01 | 2014-11-26 | 天津大学 | Annular welded sample creep testing device |
| CN104237011A (en) * | 2014-09-05 | 2014-12-24 | 天津大学 | Novel pipe girth weld test sample creep testing device |
| CN105388061A (en) * | 2015-11-26 | 2016-03-09 | 中国航空工业集团公司北京航空材料研究院 | Testing clamp for toroidal fatigue of small-pipe-diameter metal pipe |
| CN105388065A (en) * | 2015-11-26 | 2016-03-09 | 中国航空工业集团公司北京航空材料研究院 | Convenient-to-clamp pipe circumferential tensile test device |
| CN105547819A (en) * | 2016-01-28 | 2016-05-04 | 中国原子能科学研究院 | Annular sample stretching fixture |
| CN109163973A (en) * | 2018-09-30 | 2019-01-08 | 上海交通大学 | A kind of thin-wall tube sample loading device |
| CN109269881A (en) * | 2018-09-30 | 2019-01-25 | 天津津荣天宇精密机械股份有限公司 | A kind of drawing fixture of rectangular tubular workpiece |
| CN112414841A (en) * | 2020-10-13 | 2021-02-26 | 重庆工商大学 | Device and method for testing circumferential tensile strength of self-adaptive correcting pipe |
| CN113092257A (en) * | 2021-04-13 | 2021-07-09 | 西北有色金属研究院 | Universal test device and test method for circumferential tension of metal pipe |
-
2010
- 2010-05-14 CN CN2010201914873U patent/CN201681020U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048189A (en) * | 2012-11-23 | 2013-04-17 | 宁波电工合金材料有限公司 | Test fixture for binding strength of composite contact |
| CN104165811A (en) * | 2014-08-01 | 2014-11-26 | 天津大学 | Annular welded sample creep testing device |
| CN104237011A (en) * | 2014-09-05 | 2014-12-24 | 天津大学 | Novel pipe girth weld test sample creep testing device |
| CN105388061A (en) * | 2015-11-26 | 2016-03-09 | 中国航空工业集团公司北京航空材料研究院 | Testing clamp for toroidal fatigue of small-pipe-diameter metal pipe |
| CN105388065A (en) * | 2015-11-26 | 2016-03-09 | 中国航空工业集团公司北京航空材料研究院 | Convenient-to-clamp pipe circumferential tensile test device |
| CN105547819A (en) * | 2016-01-28 | 2016-05-04 | 中国原子能科学研究院 | Annular sample stretching fixture |
| CN109163973A (en) * | 2018-09-30 | 2019-01-08 | 上海交通大学 | A kind of thin-wall tube sample loading device |
| CN109269881A (en) * | 2018-09-30 | 2019-01-25 | 天津津荣天宇精密机械股份有限公司 | A kind of drawing fixture of rectangular tubular workpiece |
| CN109163973B (en) * | 2018-09-30 | 2021-10-26 | 上海交通大学 | Thin-walled tube sample loading device |
| CN109269881B (en) * | 2018-09-30 | 2024-06-04 | 天津津荣天宇精密机械股份有限公司 | Drawing fixture for rectangular tubular workpiece |
| CN112414841A (en) * | 2020-10-13 | 2021-02-26 | 重庆工商大学 | Device and method for testing circumferential tensile strength of self-adaptive correcting pipe |
| CN112414841B (en) * | 2020-10-13 | 2023-11-24 | 重庆工商大学 | Device and method for testing circumferential tensile strength of self-adaptive pilot pipe |
| CN113092257A (en) * | 2021-04-13 | 2021-07-09 | 西北有色金属研究院 | Universal test device and test method for circumferential tension of metal pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20130514 |