CN203241290U - Support for cooling drop weight tear test sample - Google Patents
Support for cooling drop weight tear test sample Download PDFInfo
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- CN203241290U CN203241290U CN 201320267918 CN201320267918U CN203241290U CN 203241290 U CN203241290 U CN 203241290U CN 201320267918 CN201320267918 CN 201320267918 CN 201320267918 U CN201320267918 U CN 201320267918U CN 203241290 U CN203241290 U CN 203241290U
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- support
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- base plate
- cooling
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Abstract
The utility model discloses a support for cooling a drop weight tear test sample, which belongs to the technical field of mechanical performance tests on metal materials. The support comprises a support soleplate which is provided with through holes, supporting legs are fixed on two sides and the middle part of the lower part of the support soleplate respectively, and stand columns are fixed on two sides and the middle part of the upper part of the support soleplate. By virtue of the support, the normalization of the cooling and heat preservation for the drop weight tear test sample can be greatly improved, the sample is convenient to take and store, and the working efficiency is improved.
Description
Technical field
The utility model belongs to the metal material mechanics technical field of performance test, is specifically related to a kind of drop weight tearing sample cooling support.
Background technology
Oil, natural gas line build early stage, the Fragile Split of many pipelines has occured, in order to prevent the generation of brittle fracture accident, people have carried out a large amount of research work.Facts have proved: for guaranteeing the safe reliability of pipe line steel, fracture in the time of need to considering to prevent pipeline in normal operation in the design phase of pipeline; In case also to consider the pipeline fracture simultaneously, should crack arrest in the short period scope, to reduce the loss as far as possible.Therefore require material should possess enough low ductile-brittle transition temperature.Summer all is pilot projects of exosyndrome material toughness than pendulum impact test and Drop-Weight Tear Test (DWTT) (DWTT), is mainly used in the cryogenic property research of metal material.Although the summer measures simple and convenient than pendulum impact test, experimentation cost is also lower, but the pipe line steel for high tenacity, large wall thickness, common Charpy bar is undersized, can not reflect the stress state in the actual components, and the result is dispersed large, according to the measured ductile-brittle transition temperature of the method, brittle temperature that in the ordinary course of things can not the authentic representative material object, its test findings is always on the low side.For transportation pipe, DWTT more can reflect the truth of its fracture near the use state of material than Charpy-type test, and middle 1960s is in API meeting proposition and begin to adopt the Drop-Weight Tear Test (DWTT) method that pipe line steel is evaluated.
Drop-Weight Tear Test (DWTT) (DWTT) must be carried out according to the regulation of " GBT8363-2007 ferritic steel Drop-Weight Tear Test (DWTT) method ".This test is carried out under cryogenic conditions usually, is to carry out this to test of paramount importance sport technique segment to the cooling of sample, insulation.Clear in 7.1 joints of GBT8363-2007: " ... sample should be immersed fully in the attemperator that suitable liquid is housed; the spacing between the sample and sample should be at least 25mm apart from the distance of attemperator edge or bottom; or equal at least sample thickness, peek value the greater.The deviation of the test temperature of fluid temperature and requirement must not be greater than ± 1 ℃.In order to guarantee that temperature is even, should make the cooling liquid in the attemperator keep flowing." when the temperature of sample reaches set point of temperature, should in 10s, take out sample and hammer into shape disconnected.At present, the general usual manner that adopts is incubated, cools off the drop weight tearing sample, this mode is arbitrarily to be deposited in sample in the cryostat,, exist following a few point defect: 1. sample directly contacts with the cryostat, bottom, owing to usually being furnished with serpentine heating pipe (bottom section and other regional temperature just exist difference) in the bottom of cryostat,, sample can't satisfy the regulation of " distance apart from the attemperator bottom should be at least 25mm " in the standard; 2. the taking, putting in the process of sample, easily cause large Lot sample to topple over.At this moment, even if liquid stirring device is installed in cryostat,, but lacking the lasting of refrigerating fluid between the sample flows, the refrigeration of sample can't meet the demands, on the other hand, because sample overlaps together mutually, operating personnel can't take out particular sample smoothly from cryogenic liquid, incured loss through delay test period.Therefore, in the cooling of sample, insulating process, adopt that the conventional type of cooling is time-consuming, effort, not only can't guarantee the refrigeration of sample, also have a strong impact on work efficiency.
The utility model content
The purpose of this utility model provides a kind of standardization that greatly improves drop weight tearing sample cooling insulation, is convenient to picking and placeing of sample, the drop weight tearing sample cooling support of increasing work efficiency.
The technical scheme that the utility model adopts is:
Support is used in a kind of drop weight tearing sample cooling, comprises the support base plate, has through hole on the described support base plate, and described both sides, support base plate bottom and centre are fixed with supporting leg, and described both sides, support base plate top and centre are fixed with column.
Preferably, the quantity in described hole is at least 6.
Preferably, the quantity of described supporting leg is 8.
More preferably, the height of described supporting leg is 30mm.
Further, described column is 4 rows, and the quantity of every row's column is 6～13.
Further, the distance 〉=30mm between the described column.
Preferably, the material of described support base plate is stainless steel.
The utlity model has following advantage:
Of the present utility model simple in structure, easy for installation, production cost is low; Before the test, support is put into cryostat,, sample is put into the column interval successively every a row, because the support of column being arranged, sample can not be toppled over; Hole on the support base plate is conducive to heat eliminating medium (liquid) and flows at the smooth and easy of sample bottom, avoids the cooling of sample is caused negative effect; Utilize simultaneously this support can guarantee that spacing between the sample and sample satisfy the GBT8363-2007 standard code apart from the distance of attemperator edge or bottom, greatly improved the standardization of sample insulation, on the other hand, because the interval between the sample is comparatively reasonable, more be convenient to picking and placeing of sample, save the working time, increase work efficiency, have very strong practical value.
Description of drawings
The Drop-Weight Tear Test (DWTT) that Fig. 1 provides for the utility model embodiment 1 structural representation of support.
Embodiment
Below in conjunction with drawings and embodiments the utility model is described in further detail.
With reference to Fig. 1, the utility model embodiment provides a kind of drop weight tearing sample cooling to use support, comprises support base plate 1, and the material of support base plate 1 is stainless steel.The through hole 2 that to have 12 diameters on the support base plate 1 be 70mm, through hole 2 are in order to ensure the flowing smoothly of cryostat, 3 interior heat eliminating mediums (alcohol), avoid the cooling of sample 5 is caused negative effect.Both sides, support base plate bottom and centre are fixed with 8 supporting legs 4, and the height of supporting leg 4 is 30mm.The effect of supporting leg 4 is to avoid support base plate 1 directly to contact with cryostat, 3 bottoms, satisfied sample 5 should be at least 25mm apart from the distance of attemperator bottom regulation.Support base plate both sides, 1 top and centre are fixed with 4 row's columns 6, and the quantity of every row's column 6 is 13, and the distance between the column 6 is 30mm.Column 6 has satisfied the regulation that spacing between the sample 5 should be at least 25mm, and the support of column 6 is arranged simultaneously, avoids sample 5 to topple over.
During on-test, this support is put into cryostat, 3, sample 5 is drained in column 6 intervals every one, the quantity of sample 5 is 14.Sample 5 is placed complete, after insulation after a while, just sample 5 can be taken out and test.
Of the present utility model simple in structure, easy for installation, production cost is low; Before the test, support is put into cryostat,, sample 5 is put into column 6 intervals successively every a row, because the support of column 6 being arranged, sample 5 can not be toppled over; Hole 2 on the support base plate 1 is conducive to heat eliminating medium (liquid) and flows at the smooth and easy of sample 5 bottoms, avoids the cooling of sample 5 is caused negative effect; Utilize simultaneously this support can guarantee that spacing between the sample 5 and sample 5 satisfy standard code apart from the distance of attemperator edge or bottom, greatly improved the standardization of sample 5 insulations, on the other hand, because the interval between the sample 5 is comparatively reasonable, more be convenient to picking and placeing of sample 5, save the working time, increase work efficiency, have very strong practical value.
The present embodiment as different from Example 1, the quantity in hole is 8, the quantity of every row's column 6 is 10.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (7)
1. support is used in a drop weight tearing sample cooling, it is characterized in that, comprises the support base plate, has through hole on the described support base plate, and described both sides, support base plate bottom and centre are fixed with supporting leg, and described both sides, support base plate top and centre are fixed with column.
2. support is used in drop weight tearing sample cooling according to claim 1, it is characterized in that, the quantity in described hole is at least 6.
3. support is used in drop weight tearing sample cooling according to claim 1, it is characterized in that, the quantity of described supporting leg is 8.
4. support is used in drop weight tearing sample cooling according to claim 3, it is characterized in that, the height of described supporting leg is 30mm.
5. support is used in drop weight tearing sample cooling according to claim 1, it is characterized in that, described column is 4 rows, and the quantity of every row's column is 6～13.
6. support is used in drop weight tearing sample cooling according to claim 5, it is characterized in that the distance 〉=30mm between the described column.
7. support is used in drop weight tearing sample cooling according to claim 1, it is characterized in that, the material of described support base plate is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320267918 CN203241290U (en) | 2013-05-16 | 2013-05-16 | Support for cooling drop weight tear test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320267918 CN203241290U (en) | 2013-05-16 | 2013-05-16 | Support for cooling drop weight tear test sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241290U true CN203241290U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320267918 Expired - Fee Related CN203241290U (en) | 2013-05-16 | 2013-05-16 | Support for cooling drop weight tear test sample |
Country Status (1)
| Country | Link |
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| CN (1) | CN203241290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308058A (en) * | 2019-08-13 | 2019-10-08 | 上海电气核电设备有限公司 | A kind of heat preservation tooling in low-temperature impact test slot |
-
2013
- 2013-05-16 CN CN 201320267918 patent/CN203241290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308058A (en) * | 2019-08-13 | 2019-10-08 | 上海电气核电设备有限公司 | A kind of heat preservation tooling in low-temperature impact test slot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170725 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20190516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |