CN209069727U - A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion - Google Patents
A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion Download PDFInfo
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- CN209069727U CN209069727U CN201821579115.0U CN201821579115U CN209069727U CN 209069727 U CN209069727 U CN 209069727U CN 201821579115 U CN201821579115 U CN 201821579115U CN 209069727 U CN209069727 U CN 209069727U
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- fixture
- stress corrosion
- foil gauge
- test
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Abstract
The utility model discloses a kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion, clamp base both sides are provided with the step for placing sample, there are loading blocks in the center upper portion position of two steps, the top of loading blocks is connect by loading screw rod with fixture, the two sides of the fixture are pasted with balance sensor foil gauge, one end of balance sensor foil gauge is pasted on fixture when use, the other end is pasted onto loading blocks, and balance sensor foil gauge is connect by signal wire with the digital recording equipment for recording test data.Sample is broken during test, and imbalance state occur in loading blocks, is transferred to digital recording equipment by balance sensor foil gauge, is realized the accurate recording sample out-of-service time, improves reliably foundation for preferably research H 2 S stress corrosion.
Description
Technical field:
The utility model relates to a kind of anti-H 2 S stress corrosion devices, and in particular to a kind of anti-H 2 S stress corrosion four
The curved test fixture of point.
Background technique:
H 2 S stress corrosion is in tensile stress, H2The cracking occurred under the comprehensive function of S and water, H 2 S stress corrosion
Failure have the characteristics that it is sudden, no-delay and without omen, be to destruction caused by oil-gas pipe material safe operation it is fatal, because
During this sulfide stress corrosion cracking test, it is vital for grasping the fracture failure time.
4 flexure stress corrosion tests of hydrogen sulfide be by one group of loads fixture and sample and meanwhile be soaked in corrosive medium into
Row test, test chamber cannot be opened halfway during test, thus sample occur the fracture failure time can not accurate recording, from
And cause the inaccuracy of test result.To the anti-H 2 S stress corrosion performance of different oil-gas pipe materials can not across comparison, from
And the height of its anti-stress corrosion performance can not be measured.
Application No. is CN201310093143.7, disclose a kind of anti-H 2 S stress corrosion cracking bend test device,
Including rectangular housing, the bottom of rectangular housing is placed with sample mount, and the upper end of rectangular housing is fixed with cover board, and cover board and square
The test chamber that seal washer forms a sealing is provided between shape shell；Sample mount rectangular frame structure and its front and back
End has symmetrical groove, embeddable sample bending fixture in the groove, and two diagonal angles of the cover board are fitted with air inlet pipe
And exhaust pipe, sample bending fixture curved, 3 points of curved or 4 kinking structures for two o'clock.Although the device can detecte evaluation and accurate
Analyze the anti-H 2 S stress corrosion cracking ability of tubing, plate or equipment, but can't the failure of accurate recording sample it is disconnected
Split the time.
Therefore, it is necessary to carry out adaptive improvement to 4 flexure stress corrosion test fixtures of existing hydrogen sulfide, trying it
The accurate recording sample failure fracture time during testing is that the evaluation oil-gas pipe material stress corrosion resistant of more preferable, more acurrate property is tested
Performance provides reliable basis.
Utility model content:
To overcome the above disadvantages, the purpose of this utility model is to provide a kind of 4 points of curved examinations of anti-H 2 S stress corrosion
Test fixture, the fixture can accurately grasp test during sample fail the case where.
The purpose of this utility model solves by the following technical programs: a kind of 4 points of anti-H 2 S stress corrosion curved
Test fixture, clamp base both sides are provided with the step for placing sample, and there are loading blocks in the center upper portion position of two steps,
The top of loading blocks is connect by loading screw rod with fixture, and the two sides of the fixture are pasted with balance sensor foil gauge, make
Used time one end of balance sensor foil gauge is pasted on fixture, and the other end is pasted onto loading blocks, balance sensor foil gauge
It is connect by signal wire with the digital recording equipment for recording test data.
The utility model has the beneficial effects that
(1) sample is broken during test, and imbalance state occur in the utility model loading blocks, is sensed by balance
Device foil gauge is transferred to digital recording equipment, realizes the accurate recording sample out-of-service time, rotten for preferably research hydrogen sulfide stress
Erosion improves reliably foundation.
(2) 4 flexure stress corrosion test fixtures of the utility model anti-H 2 S and loading blocks are Hastelloy, balance
Strain gauge of sensor is the good silver strip of corrosion resistance, effectively improves its service life.
Detailed description of the invention:
Fig. 1 is 4 points of the utility model anti-H 2 S stress corrosion curved test fixture schematic diagrames.
Fig. 2 is the installation diagram of 4 points of curved test fixtures of the utility model anti-H 2 S stress corrosion.
Description of symbols: 1 fixture, 1-1 step, 2 loading blocks, 3 load screw rods, 4 balance sensor foil gauges, 5 signals
Line, 6 samples, 7 test buckets, 8 sealing covers, 9 air inlet pipe, 10 exhaust pipes.
Specific embodiment:
The utility model is described in further detail with reference to the accompanying drawing:
As depicted in figs. 1 and 2, a kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion, 1 bottom both sides of fixture are provided with
For placing the step 1-1 of sample 6, there are loading blocks 2 in the center upper portion position of two step 1-1, and the top of loading blocks 2 is by adding
It carries screw rod 3 to connect with fixture 1, the two sides of the fixture 1 are pasted with balance sensor foil gauge 4, balance sensor when use
One end of foil gauge 4 is pasted on fixture 1, and the other end is pasted onto loading blocks 2, and balance sensor foil gauge 4 passes through signal wire 5
It is connect with the digital recording equipment for recording test data.
Before test, sample 6 is placed on the upper of two step 1-1 first, load is applied to sample 6 by load screw rod 3；
Secondly after the completion of loading, balance sensor foil gauge 4 is sticked respectively in the two sides of fixture 1, by the one of balance sensor foil gauge 4
End is pasted on fixture 1, and the other end is pasted onto loading blocks 2；Last 4 connection signal line 5 of balance sensor foil gauge, and will be upper
It states all components to place in test bucket 7, testing liquid is added and is tested.
The top of the test bucket 7 of the utility model is sealing cover 8, is equipped with air inlet pipe 9 and exhaust pipe 10 on sealing cover 8,
Signal wire 5 passes through sealing cover 8 and connect with digital recording equipment.When experiment, ventilated by air inlet pipe 9 to test bucket 7, exhaust pipe 10
Gas is discharged, test period is recorded by digital recording equipment, fracture failure, loading blocks 2 once occurs in sample 6 in experimentation
There is imbalance state, signal is reached digital recording equipment, digital record by signal wire 5 by balance sensor foil gauge 4 at this time
Equipment records unstability time, as 6 out-of-service time of sample.
In order to facilitate observation experiment situation, it is transparent organic glass that the utility model, which tests bucket 7,.
The utility model fixture 1 and loading blocks 2 are Hastelloy, and the material of balance sensor foil gauge 4 and signal wire 5 is equal
For the good fine silver of corrosion resistance.
Claims (2)
1. a kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion, it is characterised in that: fixture (1) bottom both sides, which are provided with, to be used for
The step (1-1) of sample (6) is placed, the center upper portion position of two steps (1-1) has loading blocks (2), the top of loading blocks (2)
It is connect by load screw rod (3) with fixture (1), the two sides of the fixture (1) are pasted with balance sensor foil gauge (4), make
One end of used time balance sensor foil gauge (4) is pasted on fixture (1), and the other end is pasted on loading blocks (2), balance sensing
Device foil gauge (4) is connect by signal wire (5) with the digital recording equipment for recording test data.
2. 4 points of curved test fixtures of a kind of anti-H 2 S stress corrosion according to claim 1, it is characterised in that: sulfuration resistant
4 points of curved test fixtures of hydrogen stress corrosion are placed in test bucket (7), and the top of test bucket (7) is sealing cover (8), sealing
Air inlet pipe (9) and exhaust pipe (10) are installed, signal wire (5) passes through sealing cover (8) and connect with digital recording equipment on lid (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821579115.0U CN209069727U (en) | 2018-09-26 | 2018-09-26 | A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821579115.0U CN209069727U (en) | 2018-09-26 | 2018-09-26 | A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209069727U true CN209069727U (en) | 2019-07-05 |
Family
ID=67093498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821579115.0U Active CN209069727U (en) | 2018-09-26 | 2018-09-26 | A kind of 4 points of curved test fixtures of anti-H 2 S stress corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209069727U (en) |
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2018
- 2018-09-26 CN CN201821579115.0U patent/CN209069727U/en active Active
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