CN109342303B - Cavitation erosion test device for rod-shaped sample - Google Patents
Cavitation erosion test device for rod-shaped sample Download PDFInfo
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- CN109342303B CN109342303B CN201811182004.0A CN201811182004A CN109342303B CN 109342303 B CN109342303 B CN 109342303B CN 201811182004 A CN201811182004 A CN 201811182004A CN 109342303 B CN109342303 B CN 109342303B
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the field of cavitation erosion (cavitation erosion) test devices, in particular to a cavitation erosion test device for a rod-shaped sample. The device is provided with a cavitation erosion generator and a special fixture for cavitation erosion test of a rod-shaped sample, wherein the special fixture for cavitation erosion test consists of a base, a sample holder, a limiter and a sample fixer, and has the following specific structure: the base is adhered to the bottom in the cavitation liquid container and used as a support of the sample holder, the top of the sample holder is provided with a sample fixer, and the rod-shaped sample is clamped by two horizontally opposite U-shaped grooves on the sample holder and the sample fixer, so that the rod-shaped sample is horizontally arranged; the cavitation generator is vertically arranged above the rod-shaped sample, and the limiter is arranged below the sample fixer and corresponds to the two ends of the rod-shaped sample, so that the cavitation head can always correspond to the middle position of the rod-shaped sample. The invention solves the problem that the existing cavitation erosion test device can only aim at a flat plate sample, and provides a new method and a new thought for the control test of special-shaped samples such as a rod-shaped sample.
Description
Technical Field
The invention relates to the field of cavitation erosion (cavitation erosion) test devices, in particular to a cavitation erosion test device for a rod-shaped sample.
Background
In the prior art, cavitation erosion test apparatuses are mostly directed to flat plate specimens only. As a test specimen which is often used for other properties, a rod-like test specimen has not been reliable in cavitation test method, and has a difficulty in that: if the rod-shaped sample is fixed and dead, cavitation erosion is generated on one side of the rod-shaped sample directly by the cavitation erosion head, and the influence of the non-uniform cavitation erosion on other mechanical properties of the rod-shaped sample is difficult to evaluate.
Disclosure of Invention
The invention aims to provide a cavitation erosion test device for a rod-shaped sample, which can enable a certain part of the rod-shaped sample to generate uniform cavitation erosion in the circumferential direction and provides convenience for evaluating the influence of cavitation erosion on other mechanical properties of materials.
The technical scheme of the invention is as follows:
the cavitation erosion test device for the rod-shaped sample is provided with a cavitation erosion generator and a special fixture for cavitation erosion test of the rod-shaped sample, wherein the special fixture for cavitation erosion test consists of a base, a sample seat, a limiter and a sample fixer, and has the following specific structure:
the base is adhered to the bottom in the cavitation liquid container and used as a support of the sample holder, the top of the sample holder is provided with a sample fixer, and the rod-shaped sample is clamped by two horizontally opposite U-shaped grooves on the sample holder and the sample fixer, so that the rod-shaped sample is horizontally arranged; the cavitation generator is vertically arranged above the rod-shaped sample, and the limiter is arranged below the sample fixer and corresponds to the two ends of the rod-shaped sample, so that the cavitation head can always correspond to the middle position of the rod-shaped sample.
In the cavitation erosion test device for the rod-shaped sample, the upper part of the base is turned to be connected with the sample seat through internal threads, and the lower part of the hollow sample seat is turned to be connected with the base through external threads.
In the cavitation erosion test device for the rod-shaped sample, cavitation erosion oscillation is generated by the cavitation erosion generator, and the cavitation erosion head at the lower end of the cavitation erosion generator is controlled to be 0.5-1 mm away from the rod-shaped sample.
In the cavitation erosion test device for the rod-shaped sample, the sample fixer and the limiter are connected through bolts.
The cavitation erosion test device for the rod-shaped sample is characterized in that the limiter is made of two ends of a stainless steel plate, wherein the two ends of the rod-shaped sample are bent at an angle of 90 degrees, are positioned between bent parts at the two ends of the limiter, and are positioned at the outer side of the sample seat.
The cavitation erosion test device for the rod-shaped sample is characterized in that the punching size in the middle of the bottom of the limiter is consistent with that of the base, four small holes which correspond to the punching holes in four corners of the sample fixer up and down are further processed in the bottom of the limiter, and the four small holes are used for being connected with the sample fixer through bolts.
In the cavitation erosion test device for the rod-shaped sample, a hole with the diameter being more than twice of the diameter of the cavitation erosion head is formed in the middle of the sample fixer, so that cavitation erosion liquid is only between the cavitation erosion head and the rod-shaped sample; and four corners of the sample fixer are perforated, and the limiter is connected through bolts.
And one end of the rod-shaped sample is connected with a rotating wheel of the motor through a belt, and the motor is fixed outside the cavitation liquid container through a motor base.
In the cavitation erosion test device of the rod-shaped sample, in order to increase friction force, a damping sleeve is additionally arranged at the connecting end of the rotating wheel of the motor and the rod-shaped sample and the belt.
In the cavitation erosion test device for the rod-shaped sample, the bottom and the side wall of the cavitation erosion liquid container are provided with cooling water interlayers.
The design idea of the invention is as follows: the cavitation erosion test sample moves at a uniform speed, and the purpose of uniformly changing the surface of the part needing cavitation erosion treatment is achieved. The base, the sample seat, the limiter and the sample fixer form a special fixture for cavitation test, and the base of the special fixture for cavitation test is used for connecting the bottom of a cavitation liquid container; two U-shaped openings are arranged on the sample seat and are used for holding a rod-shaped sample; the limiters are positioned at two ends of the bar-shaped sample and can prevent the bar-shaped sample from sliding in the horizontal direction; the sample holder is covered on the upper end of the sample holder so that the rod-shaped sample cannot move upwards.
The invention has the following advantages and beneficial effects:
1. the invention selects the motor arranged outside the liquid, which is beneficial to the model selection and the later maintenance of the motor.
2. The special fixture for the sample is divided into the sample holder and the sample fixer, so that the replacement of the sample is convenient.
3. The self-lubricating material adopted by the invention can ensure the lubricating effect and avoid the pollution of lubricating oil.
4. The damping belt is adopted to connect the motor and the rod-shaped sample, the sample has the function of the rotating shaft, and the energy transmission loss is reduced.
In a word, the cavitation erosion test device of the rod-shaped sample with new design is adopted, the problem that the conventional cavitation erosion test device can only aim at a flat plate sample is solved, and a new method and a new thought are provided for the control test of the special-shaped sample of the rod-shaped sample.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
In the figure: 1. cavitation liquid container; 2. cavitation generator; 3. a base; 4. a sample holder; 5. a sample holder; 6. a rod-shaped sample; 7. a bolt; 8. a limiter; 9. a belt; 10. a motor; 11. a motor base; 12. cavitation liquid; 13. cooling water interlayer.
Detailed Description
As shown in fig. 1, the cavitation test apparatus for a rod-like sample of the present invention comprises a cavitation liquid container 1, a cavitation generator 2, a base 3, a sample holder 4, a sample holder 5, a rod-like sample 6, a bolt 7, a stopper 8, a belt 9, a motor 10, a motor base 11, and the like, and has the following specific structure:
the cavitation liquid container 1 is used for containing cavitation liquid 12, and the bottom and the side wall of the cavitation liquid container 1 are provided with cooling water interlayers 13. The base 3 is adhered to the bottom in the cavitation liquid container 1, and as the support of the sample holder 4, the upper turning internal thread of the base 3 is used for connecting the sample holder 4, and the lower turning external thread of the hollow sample holder 4 is used for connecting the base 3. The top of the sample holder 4 is provided with a rectangular sample holder 5, the rod-shaped sample 6 is clamped by two horizontally opposite U-shaped grooves on the sample holder 4 and the sample holder 5, and the rod-shaped sample 6 is horizontally arranged. The cavitation generator 2 is vertically arranged above the rod-shaped sample 6, the cavitation generator 2 is used for generating cavitation oscillation, and the cavitation head at the lower end of the cavitation generator is controlled to be 0.5-1 mm away from the rod-shaped sample 6. A limiter 8 is arranged below the sample holder 5, and a bolt 7 is used for connecting the sample holder 5 and the limiter 8; the limiter 8 is formed by bending two ends of a stainless steel plate at an angle of 90 degrees, two ends of the rod-shaped sample 6 are positioned between bending parts at two ends of the limiter 8 and are positioned outside the sample seat 4, and the two ends of the rod-shaped sample 6 are provided with the limiter 8, so that the rod-shaped sample 6 can be prevented from sliding in the horizontal direction, and a cavitation erosion head can always correspond to the middle position of the rod-shaped sample 6; the middle of the bottom of the limiter 8 is perforated to be identical to the base 3 in size, four small holes which are vertically corresponding to the four corners of the sample holder 5 are also processed at the bottom of the limiter 8, and the four small holes are used for connecting the sample holder 5 through bolts 7. A hole with the diameter more than twice of the diameter of the cavitation head is formed in the middle of the sample fixer 5, so that cavitation liquid 12 is only arranged between the cavitation head and the rod-shaped sample 6; the four corners of the sample holder 5 are perforated for connecting the stoppers 8 by bolts 7. The belt 9 is used for connecting the rotating wheel of the motor 10 and one end of the rod-shaped sample 6, in order to increase friction force, a damping sleeve is additionally arranged at the connecting end of the rotating wheel of the motor 10 and the rod-shaped sample 6 and the belt 9, so that the belt 9 is prevented from slipping in cavitation liquid 12, the motor 10 is fixed outside the cavitation liquid container 1 through the motor base 11, and the motor 10 arranged outside the cavitation liquid container 1 is provided, so that the assembling difficulty can be reduced, and the requirements on tightness and insulativity of the motor 10 are met.
The special fixture for cavitation test is composed of the base 3, the sample holder 4, the limiter 8 and the sample fixer 5, and the special fixture adopts graphite with good self-lubrication as a rotary interface, so that rotary lubrication is guaranteed, and pollution of lubricating oil is avoided.
Before the test, the rod-shaped sample 6 is placed in cavitation liquid 12 in a cavitation liquid container 1 through a special fixture for cavitation test, and the distance between the cavitation head of the cavitation generator 2 and the middle part of the rod-shaped sample 6 is adjusted to be 0.5 mm-1 mm; then, the motor 10 is started to enable the rod-shaped sample 6 to rotate at a constant speed; the cavitation generator 2 is started again, so that the middle part of the rod-shaped sample 6 can generate uniform cavitation corrosion in the circumferential direction, the problem that the conventional cavitation test device can only aim at a flat sample is solved, and a new method and a new thought are provided for the control test of the special-shaped sample of the rod-shaped sample.
Claims (7)
1. The cavitation erosion test device for the rod-shaped sample is characterized by being provided with a cavitation erosion generator and a special fixture for cavitation erosion test of the rod-shaped sample, wherein the special fixture for cavitation erosion test consists of a base, a sample holder, a limiter and a sample fixer, and has the following specific structure:
the base is adhered to the bottom in the cavitation liquid container and used as a support of the sample holder, the top of the sample holder is provided with a sample fixer, and the rod-shaped sample is clamped by two horizontally opposite U-shaped grooves on the sample holder and the sample fixer, so that the rod-shaped sample is horizontally arranged; the cavitation generator is vertically arranged above the rod-shaped sample, and a limiter is arranged below the sample fixer and corresponds to two ends of the rod-shaped sample, so that the cavitation head can always correspond to the middle position of the rod-shaped sample;
the limiter is made of stainless steel plates with two ends bent at an angle of 90 degrees, and two ends of the rod-shaped sample are positioned between the bent parts at the two ends of the limiter and outside the sample seat;
one end of the rod-shaped sample is connected with a rotating wheel of the motor through a belt, and the motor is fixed outside the cavitation liquid container through a motor base;
in order to increase friction force, a damping sleeve is additionally arranged at the connection end of a rotating wheel of the motor, a rod-shaped sample and a belt.
2. The cavitation test apparatus of a rod-shaped test sample according to claim 1, wherein the upper part of the base is turned with an internal thread to connect with the test sample holder, and the lower part of the hollow test sample holder is turned with an external thread to connect with the base.
3. The cavitation test apparatus of a rod-shaped test sample according to claim 1, wherein cavitation oscillation is generated by a cavitation generator, and a cavitation head at a lower end thereof is controlled to be 0.5-1 mm from the rod-shaped test sample.
4. The cavitation test apparatus of a rod-shaped test sample according to claim 1, wherein the test sample holder and the stopper are connected by a bolt.
5. The cavitation test device for a bar-shaped sample according to claim 1, wherein the bottom middle of the stopper has a hole corresponding to the base, and four small holes corresponding to the holes at four corners of the sample holder are formed in the bottom of the stopper, and the four small holes are used for connecting the sample holder by bolts.
6. The cavitation test apparatus for a rod-like specimen according to claim 1, wherein a hole having a diameter twice or more as large as that of the cavitation head is formed in the specimen holder so that only cavitation liquid is present between the cavitation head and the rod-like specimen; and four corners of the sample fixer are perforated, and the limiter is connected through bolts.
7. The cavitation test apparatus for a rod-like specimen according to claim 1, wherein the bottom and the side wall of the cavitation liquid container have a cooling water interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182004.0A CN109342303B (en) | 2018-10-10 | 2018-10-10 | Cavitation erosion test device for rod-shaped sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182004.0A CN109342303B (en) | 2018-10-10 | 2018-10-10 | Cavitation erosion test device for rod-shaped sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109342303A CN109342303A (en) | 2019-02-15 |
| CN109342303B true CN109342303B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811182004.0A Active CN109342303B (en) | 2018-10-10 | 2018-10-10 | Cavitation erosion test device for rod-shaped sample |
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| Country | Link |
|---|---|
| CN (1) | CN109342303B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203643309U (en) * | 2013-12-16 | 2014-06-11 | 河海大学 | Temperature control corrosion test device |
| CN104634681A (en) * | 2014-12-25 | 2015-05-20 | 江南大学 | Gap-adjustable cone water-jet cavitation tester |
| CN107238542A (en) * | 2017-05-11 | 2017-10-10 | 江苏大学 | A kind of experimental rig for being used to measure the anti-Cavitation of material |
| CN207163835U (en) * | 2017-08-16 | 2018-03-30 | 江南大学 | A kind of coupling of multiple physics field cavitation corrosion device |
| CN209264527U (en) * | 2018-10-10 | 2019-08-16 | 中国科学院金属研究所 | A kind of cavitation test device of bar samples |
-
2018
- 2018-10-10 CN CN201811182004.0A patent/CN109342303B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203643309U (en) * | 2013-12-16 | 2014-06-11 | 河海大学 | Temperature control corrosion test device |
| CN104634681A (en) * | 2014-12-25 | 2015-05-20 | 江南大学 | Gap-adjustable cone water-jet cavitation tester |
| CN107238542A (en) * | 2017-05-11 | 2017-10-10 | 江苏大学 | A kind of experimental rig for being used to measure the anti-Cavitation of material |
| CN207163835U (en) * | 2017-08-16 | 2018-03-30 | 江南大学 | A kind of coupling of multiple physics field cavitation corrosion device |
| CN209264527U (en) * | 2018-10-10 | 2019-08-16 | 中国科学院金属研究所 | A kind of cavitation test device of bar samples |
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| Publication number | Publication date |
|---|---|
| CN109342303A (en) | 2019-02-15 |
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