CN214472660U - Liquid gas phase rust-proof test device - Google Patents
Liquid gas phase rust-proof test device Download PDFInfo
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- CN214472660U CN214472660U CN202120678070.8U CN202120678070U CN214472660U CN 214472660 U CN214472660 U CN 214472660U CN 202120678070 U CN202120678070 U CN 202120678070U CN 214472660 U CN214472660 U CN 214472660U
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Abstract
The utility model provides a liquid gas phase rust-proof test device, which comprises a metal test piece; a three-necked wide-mouth bottle; the upper end in the middle of the three-port wide-mouth bottle is provided with a first opening, a metal experiment sheet is placed into the three-port wide-mouth bottle from the first opening, the first opening is sealed through a screw cap in a threaded mode, one side of the three-port wide-mouth bottle is provided with a second opening, the second opening is connected with a tee, one end of the tee is connected with a protection balloon, the other end of the tee is connected with a double-row pipe device for vacuumizing and replacing oxygen through a gas pipeline, the other side of the three-port wide-mouth bottle is provided with a third opening, the third opening is used for adding liquid to be measured, and the third opening is sealed through a cock; a thermostat; the three-mouth jar can be placed in the incubator, and the incubator is used for keeping the experimental temperature of three-mouth jar invariant when experimental. The utility model has the advantages of it is following: the experimental device is simple, and can greatly improve the experimental accuracy and shorten the experimental time.
Description
Technical Field
The utility model relates to a gaseous phase rust resistance of liquid can experimental field, in particular to liquid gaseous phase rust resistance test device.
Background
Hydraulic fluids are the vehicle for power transmission in hydraulic transmission systems and must be flame retardant under special conditions of use (e.g., near high temperatures or open flames) in order to prevent accidents that can occur if the hydraulic fluid leaks from valves, pumps, lines, etc. during use. Besides flame retardancy, the antirust performance is extremely important, especially, the antirust performance is easy to corrode in an oil tank and the upper part of the liquid level of the oil tank, a valve is corroded, and a hydraulic pump shell is corroded in the using process, and particles generated after corrosion seriously influence the normal use of a hydraulic system, the antiwear performance and the anti-foaming performance of hydraulic liquid. With the development of modern hydraulic equipment towards high speed, high temperature and large capacity, the demand of hydraulic fluid is more and more, but the anti-rust performance, especially the gas-phase anti-rust performance of the hydraulic fluid restricts the use of the hydraulic fluid to a certain extent. In addition, rust slag often appears above the liquid level of oil tanks such as water-based cutting fluid, quenching fluid and the like, so that the problems of foam enlargement and overflow, oil tank damage and the like are caused.
The method for evaluating the gas-phase rust-proof performance of the liquid at present is 'SH/T0752 water-containing fire-retardant hydraulic liquid corrosion resistance determination method', and the method adopts a hanging sheet method, so that half of a metal sheet is immersed in test oil, the other half of the metal sheet is above the liquid level of the test oil, the temperature of the test liquid is kept at 35 +/-1 ℃, and the gas-phase rust-proof performance of the test oil is judged to be good or bad according to the weight loss and the surface corrosion degree of the metal sheet after 672 +/-2 hours. The method is adopted by the water-glycol fire-retardant hydraulic fluid product standard GB/T21449-2008. But when detecting the product, the experimental period that uses this detection device is overlength, experimental condition is comparatively mild, the experimentation is comparatively loaded down with trivial details, and the experimental result is accurate inadequately moreover.
SUMMERY OF THE UTILITY MODEL
The invention provides a liquid gas-phase rust-proof test device which is simple in device and short in test time and is suitable for liquid.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a liquid gas phase rust-resistant test device which characterized in that: comprises a metal test piece; a three-necked wide-mouth bottle; the upper end of the middle of the three-port wide-mouth bottle is provided with a first opening, the metal experiment sheet is placed into the three-port wide-mouth bottle from the first opening, the first opening is sealed through a screw cap in a threaded mode, one side of the three-port wide-mouth bottle is provided with a second opening, the second opening is connected with a tee joint, one end of the tee joint is connected with a protection balloon, the other end of the tee joint is connected with a double-row pipe device for vacuumizing and replacing oxygen through a gas pipeline, the other side of the three-port wide-mouth bottle is provided with a third opening, the third opening is used for adding liquid to be measured, and the third opening is sealed through a cock; a thermostat; the three-mouth wide-mouth bottle can be placed in a thermostat, and the thermostat is used for keeping constant experiment temperature during the test of the three-mouth wide-mouth bottle.
Further, the polishing device also comprises a polishing plate, wherein the polishing plate comprises sand paper or abrasive cloth.
Further, the polishing pads include a polishing pad having a particle size of 125 μm, a polishing pad having a particle size of 35 μm, and a polishing pad having a particle size of 25 μm.
Further, still include first metal experiment piece cleaning means, first metal experiment piece cleaning means includes first cotton wool and petroleum ether.
Further, still include second metal laboratory sheet cleaning means, second metal laboratory sheet cleaning means includes second cotton wool and ethanol.
Further, the cock comprises a rubber plug and a glass grinding plug.
The utility model has the advantages that:
the utility model discloses when using liquid vapour phase rust-resistant test device to test in fact, each face of the metal experiment piece that awaits measuring of polishing earlier is all bright, uses the cleaning means, with the sheetmetal sanitization. Then placing a polished metal experiment sheet in the three-mouth wide-mouth bottle, and sealing the first opening through screwing a cover; the third opening is sealed by a cock, and the cock uses a rubber plug; the second opening is connected with a tee joint, one port of the tee joint is connected with a double-row pipe device for vacuumizing and replacing through a gas line, the other port of the tee joint is provided with a protective balloon, the interior of the three-mouth wide-mouth bottle is vacuumized through the double-row pipe device for vacuumizing and replacing, then oxygen is used for replacing, and after the process is repeated for three times, the bottle of the three-mouth wide-mouth bottle is filled with oxygen; then use the syringe to inject into a certain amount of liquid that awaits measuring from the rubber buffer, make the part of experiment sheetmetal be in the liquid level of the liquid that awaits measuring below, part is in above the liquid level, later change the rubber buffer for glass grinding stopper fast.
And finally, placing the liquid gas phase rust-proof test device in a thermostat, maintaining the body system at a certain temperature, taking out the test device after a certain time, taking out the metal test piece after the temperature is cooled, and judging the liquid phase rust-proof performance and the gas phase rust-proof performance of the liquid to be tested according to the corrosion conditions of the part above the liquid level and the part below the liquid level of the metal test piece.
The utility model has the advantages of it is following:
(1) the experimental device is simple and can be easily realized in a laboratory;
(2) the experimental condition that sets up is equivalent basically with on-the-spot operating mode, directly reflects the corrosion condition of sheetmetal below the liquid level and above the liquid level under the on-the-spot operating mode to great improvement the accuracy of experimental result, this application is through the double row pipe device evacuation of evacuation replacement in addition, then uses oxygen replacement, and after relapseing the cubic, the system is full of oxygen, with the oxygen atmosphere in the simulation corrosion environment, and than using the air, the corrosion metal surface that can be faster shortens test time.
Drawings
Fig. 1 is an overall configuration diagram of an embodiment of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings:
as shown in fig. 1, as one aspect of an embodiment of the present application, an embodiment of the present application provides a liquid-gas phase rust prevention test apparatus, including:
the method comprises the following steps of selecting a metal test piece 2 material according to the requirements in SH/T0752-2005 standard, wherein the size of the test piece is 3cm x 10 cm:
TABLE 1 Metal test Panel Standard
A three-necked wide-necked bottle 1; be used for placing the metal experiment piece 2 that awaits measuring and the liquid 3 that awaits measuring in the experiment, the upper end in the middle of three-port wide-necked bottle 1 is provided with first opening, and during the metal experiment piece was put into three-port wide-necked bottle 1 from first opening, first opening passed through spiral cover 5 thread seal, and one side of three-port wide-necked bottle 1 is provided with the second opening, and the second opening is connected with tee bend 7.
And the tee joint 7 is used for vacuumizing and replacing oxygen, one end of the tee joint is connected with a gas pipeline 8 of the double-pipe arrangement device for vacuumizing and replacing, and the other end of the tee joint is connected with a protective balloon 6 for protecting the constant pressure of the system.
The protection balloon 6 is a rubber balloon and is used for protecting the oxygen atmosphere of the system and avoiding air leakage.
The cock 4 is a rubber plug and a glass ground plug and is used for sealing the experimental container.
A thermostat 9; and the device is used for keeping the temperature of the experimental atmosphere constant.
Further, the polishing device also comprises a polishing sheet, and the polishing sheet comprises sand paper or abrasive cloth.
The polishing sheets included a polishing sheet having a particle size of 125 μm, a polishing sheet having a particle size of 35 μm, and a polishing sheet having a particle size of 25 μm. The three kinds of sand paper can ensure that the rust spots on the surface are completely removed, uniform and smooth.
Still include first metal laboratory sheet cleaning means, first metal laboratory sheet cleaning means includes first cotton wool and petroleum ether.
Still include second metal laboratory sheet cleaning means, second metal laboratory sheet cleaning means includes second cotton wool and ethanol.
The cock comprises a rubber plug and a glass grinding plug.
As another aspect of the embodiments of the present application, there is provided an experimental method for testing liquid vapor phase rust inhibitive performance by using one liquid vapor phase rust inhibitive test apparatus in the above embodiments, the method comprising:
the utility model provides a polish the metal test piece that awaits measuring to get rid of the metal piece surface rust point, avoid judging the error that brings follow-up test result, use 125 mu m abrasive paper to polish different material test pieces to six faces all bright, use 35 mu m abrasive paper to polish different material test pieces to six faces all bright, use 25 mu m abrasive paper to polish different material test pieces to six faces all bright. And (3) cleaning abrasive particles on the surface of the steel wire by using absorbent cotton in petroleum ether, cleaning the surface of the steel wire by using the absorbent cotton in ethanol, and airing for later use.
Secondly, placing a polished metal experiment sheet in the three-opening wide-mouth bottle, and screwing down and sealing the middle of the wide-mouth bottle by using a screw cap; one side is sealed by a rubber plug; the other side is connected with a glass tee joint, the port of the tee joint is connected with a double-row pipe, and the other port is provided with a balloon device.
And thirdly, the three-mouth wide-mouth bottle is vacuumized in the double-tube arrangement device, then the oxygen is used for replacement, and after the replacement is repeated for three times, the system is filled with oxygen to simulate the oxygen atmosphere in the corrosion environment, and compared with the air, the three-mouth wide-mouth bottle can corrode the metal surface more quickly, and the test time is shortened. And then injecting 150 mL-500 mL of liquid to be tested from the rubber stopper of the third opening by using a syringe, so that part of the metal sheet is below the liquid level and part of the metal sheet is above the liquid level, and then quickly replacing the rubber stopper with a glass ground stopper.
The English name of the double-row tube device is Schlenk line, and Chinese is generally called as 'Hirak technology'. Schlenk does not require much higher vacuum (because multiple replacements are possible), and is safer and more effective. The operation amount is from several grams to several hundred grams, and the operation can be used for general chemical reaction (reflux, stirring, dropwise adding liquid, solid feeding and the like) and separation and purification (distillation, filtration and recrystallization, sublimation, extraction and the like) and storage and transfer of samples.
The main device of the double-row pipe device comprises: bubbler, mercury safety tube, drying column, oxygen removing column (silver molecular sieve), Na-K alloy tube, oil cutting tube, double row tube, and vacuum gauge. The shielding gas may be normal N2, or a more expensive high purity N2 or Ar gas. The protective gas is preferably used after passing it through a scrubbing cylinder containing concentrated H2SO4 or a drying tower containing a suitable desiccant.
Fourthly, placing the liquid gas phase rust prevention test device in a constant temperature box, keeping the body system at a certain temperature, the optimal temperature being 40-70 ℃, the optimal temperature being 60 ℃, taking out the liquid gas phase rust prevention test device after a certain time, the optimal time being 16-24 h, taking out the metal test piece after the temperature is cooled to room temperature, judging the liquid phase rust prevention performance and the gas phase rust prevention performance of the liquid to be tested through the corrosion conditions of the part above the liquid level of the metal piece and the part below the liquid level, and comparing the corrosion conditions of different metal test pieces of different liquids to be tested after photographing.
The gas-phase antirust performance device for detecting the liquid has the advantages that the experimental result is accurate, and the device has obvious distinguishability on different liquids to be detected; the experimental method is related to the actual working condition, the actual working point temperature is generally 70-90 ℃, the actual oil tank temperature is generally 45-60 ℃, the experimental method simulates the temperature in the oil tank, the metal surface can be corroded faster and the experimental time can be shortened by simulating the oxygen atmosphere in the corrosion environment compared with the use of air, and the experiment has obvious distinction compared with the 672h experimental time required by SH/T0752. The advantage that the experimental time is short, efficient reflects, just can distinguish the gas of different liquid that awaits measuring, liquid phase antirust performance in this experiment short time, improvement laboratory that can be very big is high to the work efficiency of antirust performance development, can better study the gas phase antirust performance of fluid.
The above description is not intended to limit the technical scope of the present invention, and any modifications to the above embodiments according to the technical spirit of the present invention are possible; equivalent changes and modifications are also within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a liquid gas phase rust-resistant test device which characterized in that: comprises that
A metal test piece;
a three-necked wide-mouth bottle; the upper end of the middle of the three-port wide-mouth bottle is provided with a first opening, the metal experiment sheet is placed into the three-port wide-mouth bottle from the first opening, the first opening is sealed through a screw cap in a threaded mode, one side of the three-port wide-mouth bottle is provided with a second opening, the second opening is connected with a tee joint, one end of the tee joint is connected with a protection balloon, the other end of the tee joint is connected with a double-row pipe device for vacuumizing and replacing oxygen through a gas pipeline, the other side of the three-port wide-mouth bottle is provided with a third opening, the third opening is used for adding liquid to be measured, and the third opening is sealed through a cock;
a thermostat; the three-mouth wide-mouth bottle can be placed in a thermostat, and the thermostat is used for keeping constant experiment temperature during the test of the three-mouth wide-mouth bottle.
2. The liquid-gas phase rust prevention test device according to claim 1, characterized in that: also included is a sanding block comprising sandpaper or a cloth.
3. The liquid-gas phase rust prevention test device according to claim 2, characterized in that: the polishing sheets included a polishing sheet having a particle size of 125 μm, a polishing sheet having a particle size of 35 μm, and a polishing sheet having a particle size of 25 μm.
4. The liquid-gas phase rust prevention test device according to claim 3, characterized in that: still include first metal laboratory sheet cleaning means, first metal laboratory sheet cleaning means includes first cotton wool and petroleum ether.
5. The liquid-gas phase rust prevention test device according to claim 3, characterized in that: still include second metal laboratory sheet cleaning means, second metal laboratory sheet cleaning means includes second cotton wool and ethanol.
6. The liquid-gas phase rust prevention test device according to claim 1, characterized in that: the cock comprises a rubber plug and a glass grinding plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120678070.8U CN214472660U (en) | 2021-04-02 | 2021-04-02 | Liquid gas phase rust-proof test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120678070.8U CN214472660U (en) | 2021-04-02 | 2021-04-02 | Liquid gas phase rust-proof test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214472660U true CN214472660U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120678070.8U Active CN214472660U (en) | 2021-04-02 | 2021-04-02 | Liquid gas phase rust-proof test device |
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|---|---|
| CN (1) | CN214472660U (en) |
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2021
- 2021-04-02 CN CN202120678070.8U patent/CN214472660U/en active Active
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