CN209117475U - A kind of stress-rupture tester fixture with atmosphere - Google Patents
A kind of stress-rupture tester fixture with atmosphere Download PDFInfo
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- CN209117475U CN209117475U CN201821811006.7U CN201821811006U CN209117475U CN 209117475 U CN209117475 U CN 209117475U CN 201821811006 U CN201821811006 U CN 201821811006U CN 209117475 U CN209117475 U CN 209117475U
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- metal sealing
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Abstract
The utility model discloses a kind of stress-rupture tester fixture with atmosphere, including connector A, fixture A, split electric furnace, metal sealing pipe, sample, fixture B and connector B, wherein: sample is arranged in metal sealing pipe, the outer of metal sealing pipe is arranged in split electric furnace, fixture A, fixture B are separately mounted to sample both ends, it is connected by screw thread or pin, one end of metal sealing pipe is connect by fixture nut with connector B.It is sealed between fixture A, fixture B and metal sealing pipe using low friction dynamic sealing mode.It is compared with the prior art, this fixture is ingenious in design, it is simple to operate, it can be installed on the common various Stress-repture testers in laboratory, it can be achieved that stress-rupture tester of the metal material in various atmospheres (corrosive gas or inert gas etc.).
Description
Technical field
The utility model belongs to Metal Materials At High Temperature experimental study field, and in particular to a kind of high temperature with atmosphere is held
Long test fixture.
Background technique
Stress rupture test be test material at a certain temperature by permanent load effect when, regulation the duration
Do not cause a kind of mechanical property of materials test of the maximum stress of fracture inside.Creep rupture strength is the design of high-temperature component, choosing
Material provides important evidence.Have some marks for Rupture Strength For Metals At Elevated Temperature test and method of evaluating performance both at home and abroad at present
Standard, such as China standard GB/T 2039-2012, international standard ISO 204, Unite States Standard ASTM E139-2011, European standard EN
10291-2000 etc..But the requirement of experimental atmosphere is not prescribed by these standards, only ASTM E139 explanation when sample vulnerable to
It can be tested under vacuum or inert gas shielding environment when environmental damage.
Current stress-rupture tester carries out usually in still air, often has ignored ambiance to test result
It influences, however existing research shows that ambiance often has important influence to the high temperature endurance performance of metal material.Outside
Under the synergy for loading lotus and corrosive environment atmosphere, material often shows the mechanical property more deteriorated.Such as it is coal-fired
Heating surface tubes in boilers, during high-temperature service, pipe outer wall and inner wall respectively by high-temperature flue gas and high-temperature steam corrosion with
Oxidation, therefore only the enduring quality in high temperature air can not really reflect its enduring quality in some special atmospheres.
In addition, for example temperature gas cooled reactor steam generator heat-transfer pipe Service Environment is high-purity He gas, if persistently being tried in high temperature air
It tests, result will have certain error.Currently, domestic Stress-repture tester is generally just for high temperature dry air environment,
Only a small number of producers develop the Stress-repture tester with atmosphere box, but its structure is relative complex, expensive, Wu Faguang
General application.
Utility model content
The purpose of this utility model is to overcome the above drawbacks in the prior art, provide a kind of with atmosphere
Stress-rupture tester fixture.
What the utility model adopts the following technical solution to realize:
A kind of stress-rupture tester fixture with atmosphere, including connector A, fixture A, split electric furnace, metal sealing
Pipe, fixture B and connector B；Wherein:
Sample is arranged in metal sealing pipe, and split electric furnace is arranged outside metal sealing pipe, and fixture A and fixture B pacify respectively
It mounted in sample upper and lower ends, is connected by screw thread or pin, the both ends connector A are connect with endurance testing machine and fixture A respectively, connector
The both ends B are connect with fixture B and endurance testing machine respectively；Metal sealing pipe both ends are respectively equipped with gas vent and air inlet, equal outside hole
Equipped with shut-off valve, metal sealing pipe one end is connect by fixture nut with connector B, between fixture A, fixture B and metal sealing pipe
It is sealed using low friction dynamic sealing mode.
The utility model, which further improves, to be, fixture A includes combined seal ring I, spacer ring, combined seal ring II, gear
Plate, guide ring and connection screw thread；Wherein, combined seal ring I, spacer ring, combined seal ring II are successively installed on the sealing ring of fixture A
In groove, guarantee the low friction dynamic sealing between fixture A and metal sealing pipe using double combined seal rings, baffle is for fixing
Combined seal ring I；Fixture B is identical as fixture A structure, and position is opposite.
The utility model, which further improves, to be, combined seal ring I includes O-ring A and slip ring A, combined seal ring
II includes O-ring B and slip ring B, is separated between combined seal ring I and combined seal ring II with spacer ring.
The utility model, which further improves, to be, metal sealing inside pipe wall finish is better than Ra=0.8.
The utility model, which further improves, to be, slip ring A and slip ring B use the material system of coefficient of friction≤0.1
At.
The utility model, which further improves, to be, to be externally provided with first close in the end pipe close to connector B for metal sealing pipe
External screw thread is sealed, connector B is externally provided with the second sealing external screw thread, is fixedly connected both when test by fixture nut.
The utility model, which further improves, to be, temperature-control heat couple temperature measuring point is located at metal corresponding to sample marking distance section
Seal pipe outer wall, sample and metal sealing inside pipe wall spacing≤5mm.
The utility model has following beneficial technical effect:
1, the utility model forms seal chamber using fixture A, fixture B and metal sealing pipe, and metal material may be implemented and exist
High temperature endurance performance in different atmosphere environment (corrosive gas, inert gas etc.) is tested, more realistically reacting metal material
Enduring quality in some special atmospheres.
2, the utility model uses low friction dynamic sealing mode, frictional force is effectively reduced, so that test result is more accurate
Reliably.
3, the utility model guarantees that gas tightness is good using double combined seal ring sealings, can be in not tonifying Qi
Long term test.
4, the utility model is ingenious in design, simple to operate, cheap, can be installed on common various in laboratory
On Stress-repture tester, it is widely used.
Detailed description of the invention
Fig. 1 is the general assembly drawing of the utility model.
Fig. 2 is combined seal ring partial structural diagram.
In figure: 1 is connector A；2 be fixture A；3 be split electric furnace；4 be metal sealing pipe；5 be sample；6 be fixture B； 7
For connector B；
21 be combined seal ring I；211 be O-ring A；212 be slip ring A；22 be spacer ring；23 be combined seal ring II；
231 be O-ring B；232 be slip ring B；24 be baffle；25 be guide ring；26 be connection screw thread；
41 be gas vent；42 be discharge line valve；43 be air inlet；44 be air inlet stop valve；45 be the first outer spiral shell of sealing
Line；
71 be fixture nut；72 be the second sealing external screw thread.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of stress-rupture tester fixture with atmosphere provided by the utility model, packet
Include connector A1, fixture A2, split electric furnace 3, metal sealing pipe 4, fixture B6 and connector B7；Wherein, fixture A2 includes combination sealing
Enclose I 21, spacer ring 22, combined seal ring II 23, baffle 24, guide ring 25 and connection screw thread 26, wherein combined seal ring I 21 wraps
O-ring A211 and slip ring A212 are included, the combined seal ring II 23 includes O-ring B231 and slip ring B232.By O-ring
B231 is installed in the groove of 2 one end fixture A, and slip ring B232 is installed in groove later, and the two constitutes combined seal ring
II 23, spacer ring 22 is installed in groove later, combined seal ring I 21 is installed again later, baffle 24 is pressed in combined seal ring I
On 21, connector A 1 is connect by connection screw thread 27 with fixture A 2, and compress baffle 24, be later installed on guide ring 25
In the guiding ring groove of fixture A 2.Combined seal ring and guide ring are installed on fixture B 6 using same procedure, by connector B
7 are connect by connection screw thread with fixture B 6.The slip ring should use the material of coefficient of friction≤0.1, select in this programme
Polytetrafluoroethylene (PTFE), by actual measurement, frictional force is about 45N.
The fixture A 2 and fixture B 6 are separately mounted to 5 upper and lower ends of sample, connected by screw thread or pin, selection
The metal sealing pipe 4 of suitable dimension, and guarantee that its inner wall finish better than Ra=0.8, adds in the suitable position of metal sealing pipe 4
Discharge line valve 42 is arranged outside gas vent 41, air inlet stop valve is arranged outside air inlet 43 for work gas vent 41 and air inlet 43
44.The metal sealing pipe 4 is sleeved on outside the sample and fixture, the metal sealing pipe 4 is close to lower jointing one
End pipe is externally provided with the first sealing external screw thread 45, and the lower jointing 7 is externally provided with the second sealing external screw thread 72, two when duration running
Person is fixedly connected by fixture nut 71；When sample is installed, fixture nut 71 is screwed onto 72 side of the second sealing external screw thread, is removed
Metal sealing pipe 4 installs sample.
Test gas used is passed through before test into the seal chamber formed between fixture A 2, fixture B 6 and metal sealing pipe 4
Body (corrosive gas or inert gas etc.) closes air inlet stop valve 44 and discharge line valve after gas is full of entire seal chamber
42。
The heating location of the clamshell type heating furnace 3 is first adjusted during the test, on the one hand guarantees 5 gauge length Duan Wen of sample
Degree reaches default test temperature, on the other hand makes the fixture A 2 and 6 clip position temperature of fixture B relatively low.Start
After test, sample extends during hot test, due to using low friction dynamic sealing between fixture A 2 and metal sealing pipe 4
Relative motion can occur, not only guaranteed that the leakproofness in entire seal chamber is good, but on the power that loads on sample 5 influence compared with
It is small.Temperature-control heat couple temperature measuring point is located at 4 outer wall of metal sealing pipe corresponding to 5 gauge length section of sample, to guarantee temperature accuracy, examination
Sample 5 and 4 inner wall spacing of metal sealing pipe answer≤5mm.
The utility model is ingenious in design, simple to operate, cheap, can be installed on the common various height in laboratory
On warm endurance testing machine, thin-wall metal pipe full section pipe sample may be implemented in various atmosphere (corrosive gas, inert gas etc.) ring
Stress-rupture tester in border.
Claims (7)
1. a kind of stress-rupture tester fixture with atmosphere, which is characterized in that including connector A (1), fixture A (2), right
Open electric furnace (3), metal sealing pipe (4), fixture B (6) and connector B (7)；Wherein:
Sample (5) setting in the metal sealing pipe (4), split electric furnace (3) setting metal sealing pipe (4) outside, fixture A (2) and
Fixture B (6) is separately mounted to sample (5) upper and lower ends, is connected by screw thread or pin, and connector A (1) both ends are tried with lasting respectively
Machine and fixture A (2) connection are tested, connector B (7) both ends are connect with fixture B (6) and endurance testing machine respectively；Metal sealing pipe (4) two
End is respectively equipped with gas vent (41) and air inlet (43), and shut-off valve is equipped with outside hole, and metal sealing pipe (4) one end passes through fixed spiral shell
Female (71) are connect with connector B (7), and low friction dynamic sealing mode is used between fixture A (2), fixture B (6) and metal sealing pipe (4)
Sealing.
2. a kind of stress-rupture tester fixture with atmosphere according to claim 1, which is characterized in that fixture A
It (2) include combined seal ring I (21), spacer ring (22), combined seal ring II (23), baffle (24), guide ring (25) and connection spiral shell
Line (26)；Wherein, combined seal ring I (21), spacer ring (22), combined seal ring II (23) are successively installed on the sealing of (2) fixture A
It encloses in groove, guarantees the low friction dynamic sealing between fixture A (2) and metal sealing pipe (4), baffle using double combined seal rings
(24) it is used for fixed Combination sealing ring I (21)；Fixture B (6) is identical as fixture A (2) structure, and position is opposite.
3. a kind of stress-rupture tester fixture with atmosphere according to claim 2, which is characterized in that combination is close
Seal I (21) includes O-ring A (211) and slip ring A (212), and combined seal ring II (23) includes O-ring B (231) and sliding
Ring B (232) is separated between combined seal ring I (21) and combined seal ring II (23) with spacer ring (22).
4. a kind of stress-rupture tester fixture with atmosphere according to claim 1, which is characterized in that metal is close
Tube sealing (4) inner wall finish is better than Ra=0.8.
5. a kind of stress-rupture tester fixture with atmosphere according to claim 3, which is characterized in that slip ring
A (212) and slip ring B (232) is made of the material of coefficient of friction≤0.1.
6. a kind of stress-rupture tester fixture with atmosphere according to claim 1, which is characterized in that metal is close
Tube sealing (4) is externally provided with the first sealing external screw thread (45) in the end pipe close to connector B (7), and connector B (7) is externally provided with the second sealing
External screw thread (72) is fixedly connected both when test by fixture nut (71).
7. a kind of stress-rupture tester fixture with atmosphere according to claim 1, which is characterized in that temperature control heat
Galvanic couple temperature measuring point is located at metal sealing pipe (4) outer wall corresponding to sample (5) gauge length section, and sample (5) and metal sealing pipe (4) are interior
Wall spacing≤5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821811006.7U CN209117475U (en) | 2018-11-05 | 2018-11-05 | A kind of stress-rupture tester fixture with atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821811006.7U CN209117475U (en) | 2018-11-05 | 2018-11-05 | A kind of stress-rupture tester fixture with atmosphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209117475U true CN209117475U (en) | 2019-07-16 |
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ID=67203703
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821811006.7U Active CN209117475U (en) | 2018-11-05 | 2018-11-05 | A kind of stress-rupture tester fixture with atmosphere |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269882A (en) * | 2018-11-05 | 2019-01-25 | 西安热工研究院有限公司 | A kind of stress-rupture tester fixture with atmosphere |
-
2018
- 2018-11-05 CN CN201821811006.7U patent/CN209117475U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269882A (en) * | 2018-11-05 | 2019-01-25 | 西安热工研究院有限公司 | A kind of stress-rupture tester fixture with atmosphere |
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