CN103383340A - Immersion test apparatus for coating of cargo oil tank of crude oil tanker - Google Patents
Immersion test apparatus for coating of cargo oil tank of crude oil tanker Download PDFInfo
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- CN103383340A CN103383340A CN2013102589459A CN201310258945A CN103383340A CN 103383340 A CN103383340 A CN 103383340A CN 2013102589459 A CN2013102589459 A CN 2013102589459A CN 201310258945 A CN201310258945 A CN 201310258945A CN 103383340 A CN103383340 A CN 103383340A
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Abstract
The invention provides an immersion test apparatus for the coating of a cargo oil tank of a crude oil tanker, which belongs to the field of corrosion resistance test of materials for ships. The apparatus comprises a constant temperature water bath box and a condensation reflux type immersion test container arranged in the constant temperature water bath box, wherein a test solution is filled in the immersion test container, the immersion test container is composed of a glass container and an upper glass cover, an overhung hanger used for hanging a test template is arranged at the top of the glass container, the upper glass cover is provided with an opening communicated with the bottom end of a condensation return pipe, the top of the condensation return pipe is an air exhaust opening, and a cooling water pipe connected with a water chilling unit is uniformly wound around the wall of the condensation return pipe. The apparatus provided by the invention can truly reproduce the environmental condition of a polyphase acid oil-water mixed medium in which the coating of the cargo oil tank of the crude oil tanker is located in a loading state.
Description
[technical field]
The present invention relates to Marine Materials corrosion resistance test field, especially relate to a kind of decay resistance for simulation boats and ships crude oil Cargo Oil bunker oil district protective finish and the immersion test device of environmental adaptability.
[background technology]
Known, IMO MSC.288 (87) " boats and ships crude oil oil cargo tank protective finish performance standard " issued and enforces in May, 2010, it stipulates in the preparation qualifying licensing examination of selecting about coating, and coating must be by carrying out the submergence accelerated test of 180 days according to its annex 1 " the qualifying licensing examination program of crude oil carrier oil cargo tank protective finish " or equivalent test program; Yet, existingly adopt the single-phase medium submergence be used to the chamber of carrying out coating corrosion resistance immersion test more, as single-phase salt water resistant test, chemical-resistant reagent test or anti-product oil test etc., single-phase test like this can't the true reappearance loading condition under the environmental aspect of the residing heterogeneous acid oil mixing with water medium of crude oil Cargo Oil bunker oil district's protective finish, therefore also just can't measure accurately crude oil Cargo Oil bunker oil and distinguish the adaptability of coating in complex environment;
In addition, adopt airtight simple glass test chamber to carry out the liquid medium immersion due in existing immersion test more, but in the process of the test of 180 days, the expansion of certainly will will volatilizing of the liquid in container, this just easily causes glass container to break because interior external pressure is unbalance; If glass container leaves discharge orifice, the volatile matter of discharging by discharge orifice can cause again the problems such as environmental pollution, testing liquid consumption or the variation of test(ing) liquid chemical composition, loads onto the corresponding device that automatically the replenishes testing liquid stability of test(ing) liquid chemical composition during warranty test fully even add this moment;
Secondly, the non-airtight glass test chamber of many employings in existing high temperature immersion test, but during due to hot test, liquid medium will certainly continual volatilization or evaporation, therefore, just need the regular replenishment test to make up the minimizing of volatilizing or evaporating the total amount of liquid that causes with liquid in process of the test, and in the process of the test of reality, the liquid that replenishes can't keep the stability of test(ing) liquid medium chemical composition, and the harmful toxic matter that contains in the test volatile matter also can cause certain corrosion contamination to environment.
[summary of the invention]
In order to overcome the deficiency in background technology; the invention discloses a kind of crude oil tanker oil cargo tank coating immersion test device; described device not only can the reproduction loading condition of true stereo under the environmental aspect of the residing heterogeneous acid oil mixing with water medium of crude oil Cargo Oil bunker oil district's protective finish; but also can guarantee pressure equilibrium inside and outside test chamber during immersion test, and guarantee that the chemical composition of bulk testing liquid is relatively stable.
For achieving the above object, the present invention adopts following technical scheme:
A kind of crude oil tanker oil cargo tank coating immersion test device, described device comprise that impermeability is good, the constant water bath box of acid resistance atmosphere long-term corrosion and be placed in a plurality of condensing reflux formula immersion test containers in constant water bath box; The testing liquid temperature that described constant water bath box adopts the mode of heated water bath will be loaded in the immersion test container remains on 60 ± 2 ℃; Described testing liquid is the heterogeneous acid oil-water mixture that contains bunker fuel oil, benzene+toluene Mixed Solvent, sulfuretted hydrogen and synthetic sea water; Described immersion test container is made of flat cylindrical glass container and hemispherical glass top cover; The top of described flat cylindrical glass container is mounted with one and is used for hanging vertical immersion in the hanger that dangles of the test piece of testing liquid, and this hanger that dangles is corroded by anti-testing liquid, and does not make with the material of testing liquid generation chemical reaction; Described glass top cover is provided with an opening, and this opening connects constant water bath box by sealing pipeline is communicated with the bottom of a condensing reflux pipe; The top of described condensing reflux pipe is exhausr port, and the outer uniform winding of the tube wall of condensing reflux pipe has the cooling water pipe that joins with water chiller;
Described device first is loaded into the immersion test container with described testing liquid when using in, making the height of testing liquid in glass container is 400mm, and wherein water is 20mm; The test piece of application coating to be measured hangs in the immersion test glass container by the hanger that dangles again, and makes in the testing liquid of the complete vertical immersion of test piece in glass container, mutually isolates between the warranty test model simultaneously and does not block mutually; Then, the temperature of operation constant water bath box Control experiment solution is at 60 ± 2 ℃ and move 180 days, make the environmental aspect of reproducing the residing heterogeneous acid oil mixing with water medium of crude oil Cargo Oil bunker oil district's protective finish under loading condition in the immersion test device, thereby the protective finish that is painted on test piece is tested; During test run, in glass container, the volatile matter of testing liquid is entered to the condensing reflux pipe with the pipeline that is connected by the opening of glass top cover, then cools by the condensing reflux pipe, and is back in glass container after condensation liquefaction.
Described crude oil tanker oil cargo tank coating immersion test device, described testing liquid preparation steps is as follows:
A, take appropriate density≤0.89g/mL and meet the bunker fuel oil of ISO 8217-2005 standard DMA level rectifying, and by adding naphthenic acid, the acid number of bunker fuel oil is adjusted to 2.5 ± 0.1 mg KOH/g;
B, interpolation respectively account for benzene and the toluene of bunker fuel oil gross mass 4%;
C, interpolation account for the synthetic sea water of bunker fuel oil gross mass 5.0 ± 0.2%;
D, interpolation hydrogen sulfide solution, making the concentration of hydrogen sulfide in overall test solution is 5.0 ± 1ppm.
Described crude oil tanker oil cargo tank coating immersion test device, described constant water bath box are connected with the senior microprocessor controller that corresponding tool LED shows.
Described crude oil tanker oil cargo tank coating immersion test device, described immersion test container is six.
Described crude oil tanker oil cargo tank coating immersion test device, described immersion test container adopts the glass container of 240 (overall diameter)/220 (interior diameter) * 450 (height) mm, and diameter is the glass top cover of 250mm; Described glass container inner top is arranged as the hanger that dangles of diameter 215mm.
Described crude oil tanker oil cargo tank coating immersion test device, the described hanger that dangles is made by the insulated nylon material.
Owing to adopting technical scheme as above, the present invention has following beneficial effect:
Crude oil tanker oil cargo tank coating immersion test apparatus structure of the present invention is simple, convenient operation, described device can be in coating corrosion resistance immersion test the environmental aspect of the residing heterogeneous acid oil mixing with water medium of crude oil Cargo Oil bunker oil district's protective finish under the reproduction loading condition of true stereo, therefore can correspondingly measure accurately the adaptability of crude oil Cargo Oil bunker oil district's coating in complex environment; In addition, described device not only can be in the pressure equilibrium that ensures during immersion test inside and outside test chamber, thereby effectively avoid the immersion test container to break, and described device can also make bulk testing liquid keep the relative stability of its chemical composition in the bulk testing process.
[description of drawings]
Fig. 1 is schematic diagram of the present invention.
In figure: 1, constant water bath box; 2, testing liquid; 3, glass container; 4, glass top cover; 5, the hanger that dangles; 6, test piece; 7, condensing reflux pipe; 8, water chiller; 9, cooling water pipe.
[embodiment]
Can explain in more detail the present invention by the following examples, disclose purpose of the present invention and be intended to protect all changes and improvements in the scope of the invention, the present invention is not limited to the following examples:
1 described a kind of crude oil tanker oil cargo tank coating immersion test device by reference to the accompanying drawings, described device comprise that impermeability is good, the constant water bath box 1 of acid resistance atmosphere long-term corrosion and be placed in six condensing reflux formula immersion test containers in constant water bath box 1, described constant water bath box 1 is connected with the senior microprocessor controller that corresponding tool LED shows, and its testing liquid 2 temperature that can adopt the mode of heated water bath will be loaded in the immersion test container remain on 60 ± 2 ℃, be that constant water bath box 1 can be controlled the fresh water that heating is stored in the case inner bottom part by microprocessor controller, thereby utilize the fresh water after heating that the temperature control that dress is stored in six testing liquids 2 in the immersion test container is remained on 60 ± 2 ℃, such type of heating is temperature stabilization not only, homogeneous heating, but also reliable and can ensure automatically keeping of water level, described testing liquid 2 is for containing the heterogeneous acid oil-water mixture of bunker fuel oil, benzene+toluene Mixed Solvent, sulfuretted hydrogen and synthetic sea water, this testing liquid 2 fills in the glass container 3 that is stored in the immersion test container, its dress is deposited and highly is 400mm, and requires to generate the water of 20 mm,
Wherein, described testing liquid 2 preparation steps are as follows:
A, take appropriate density≤0.89g/mL and meet the bunker fuel oil of ISO 8217-2005 standard DMA level rectifying, and by adding naphthenic acid, the acid number of bunker fuel oil is adjusted to 2.5 ± 0.1 mg KOH/g;
B, interpolation respectively account for benzene and the toluene of bunker fuel oil gross mass 4%, and the benzene and the toluene that namely add account for respectively 4% of bunker fuel oil gross mass;
C, interpolation account for the synthetic sea water of bunker fuel oil gross mass 5.0 ± 0.2%;
D, interpolation hydrogen sulfide solution are made described testing liquid when the concentration of hydrogen sulfide in overall test solution is 5.0 ± 1ppm.
Described immersion test container is made of the hemispherical glass top cover 4 that the flat cylindrical glass container 3 that is of a size of 240 (overall diameter)/220 (interior diameter) * 450 (height) mm and diameter are 250mm; The inner top of described glass container 3 is mounted with one and is used for hanging vertical immersion in the hanger 5 that dangles of the test piece 6 of testing liquid 2, these hanger 5 diameters that dangle are 215mm, it is corroded by anti-testing liquid 2, and does not make with the insulated nylon material of testing liquid 2 generation chemical reactions; Described glass top cover 4 is provided with an opening, this opening connects constant water bath box 1 by sealing pipeline is communicated with the bottom of a condensing reflux pipe 7, the top of condensing reflux pipe 7 is exhausr port, the outer even distance of the tube wall of condensing reflux pipe 7 is wound with the cooling water pipe 9 that joins with water chiller 8, thereby the cool purpose of condensing reflux pipe 7 of the recirculated water that utilizes water chiller 8 to provide to cooling water pipe 9 has been provided;
In sum; be the pressure equilibrium inside and outside guaranteeing the immersion test container at duration of test; avoid the glass container 3 in the immersion test container to occur damaged; the component that ensures simultaneously testing liquid 2 is relatively stable at duration of test; and solution does not consume or only trace consumption; described device adopts condensing reflux formula immersion test container, namely carries out pressure protect by 7 pairs of immersion test containers of condensing reflux pipe.
when implementing crude oil tanker oil cargo tank coating immersion test device of the present invention, first described testing liquid 2 is loaded in the immersion test container, the height that makes the interior testing liquid 2 of glass container 3 is 400mm, and wherein water is 20mm, again will be at corresponding test piece 6 outside surface brushing protective finish to be tested, again by the hanger 5 that dangles with test piece 6 vertical hangings in glass container 3, and make in the testing liquid 2 of the complete vertical immersion of test piece 6 in glass container 3, simultaneously, want mutually isolate between warranty test model 6 and do not block mutually when placing, then, operation constant water bath box 1, after the temperature of testing liquid 2 is controlled at 60 ± 2 ℃, operation is 180 days, make the environmental aspect of reproducing the residing heterogeneous acid oil mixing with water medium of crude oil Cargo Oil bunker oil district's protective finish under loading condition in the immersion test device, thereby the protective finish of brushing on test piece 6 tested, during test run, the volatile matter of the interior testing liquid 2 of glass container 3 is entered to condensing reflux pipe 7 with the pipeline that is connected by the opening of glass top cover 4, then cool by condensing reflux pipe 7, and be back to after condensation liquefaction in glass container 3, so not only overcome pressure and adjusted the inaccurate risk that causes, but also avoided the change of the testing liquid composition that direct exhaust brings and on the impact of environment, simultaneously, because the volatile matter that only has few liquefaction that is not cooled may be from the exhausr port discharge on condensing reflux pipe 7 tops, therefore, described device can not consuming or only trace consumption at the effective warranty test solution of duration of test.
Part not in the detailed description of the invention is prior art, therefore the present invention is not described in detail.
Claims (6)
1. crude oil tanker oil cargo tank coating immersion test device is characterized in that: described device comprises that impermeability is good, the constant water bath box of acid resistance atmosphere long-term corrosion (1) and be placed in a plurality of condensing reflux formula immersion test containers in constant water bath box (1); Testing liquid (2) temperature that described constant water bath box (1) adopts the mode of heated water bath will be loaded in the immersion test container remains on 60 ± 2 ℃; Described testing liquid (2) is for containing the heterogeneous acid oil-water mixture of bunker fuel oil, benzene+toluene Mixed Solvent, sulfuretted hydrogen and synthetic sea water; Described immersion test container is made of flat cylindrical glass container (3) and hemispherical glass top cover (4); The top of described flat cylindrical glass container (3) is mounted with one and is used for hanging vertical immersion in the hanger that dangles (5) of the test piece (6) of testing liquid (2), this hanger that dangles (5) is corroded by anti-testing liquid (2), and does not make with the material of testing liquid (2) generation chemical reaction; Described glass top cover (4) is provided with an opening, and this opening connects constant water bath box (1) by sealing pipeline is communicated with the bottom of a condensing reflux pipe (7); The top of described condensing reflux pipe (7) is exhausr port, and the outer uniform winding of the tube wall of condensing reflux pipe (7) has the cooling water pipe (9) that joins with water chiller (8);
Described device first is loaded into the immersion test container with described testing liquid (2) when using in, the height that makes the interior testing liquid of glass container (3) (2) is 400mm, and wherein water is 20mm; The test piece of application coating to be measured (6) hangs in immersion test glass container (3) by the hanger that dangles (5) again, and make in the complete testing liquid (2) of vertical immersion in glass container (3) of test piece (6), mutually isolate between warranty test model (6) simultaneously and do not block mutually; Then, the temperature of operation constant water bath box (1) Control experiment solution (2) is at 60 ± 2 ℃ and move 180 days, make the environmental aspect of reproducing the residing heterogeneous acid oil mixing with water medium of crude oil Cargo Oil bunker oil district's protective finish under loading condition in the immersion test device, thereby the protective finish that is painted on test piece (6) is tested; During test run, the volatile matter of the interior testing liquid of glass container (3) (2) is entered to condensing reflux pipe (7) with the pipeline that is connected by the opening of glass top cover (4), then cool by condensing reflux pipe (7), and be back to glass container in (3) after condensation liquefaction.
2. crude oil tanker oil cargo tank coating immersion test device according to claim 1, it is characterized in that: described testing liquid (2) preparation steps is as follows:
A, take appropriate density≤0.89g/mL and meet the bunker fuel oil of ISO 8217-2005 standard DMA level rectifying, and by adding naphthenic acid, the acid number of bunker fuel oil is adjusted to 2.5 ± 0.1 mg KOH/g;
B, interpolation respectively account for benzene and the toluene of bunker fuel oil gross mass 4%;
C, interpolation account for the synthetic sea water of bunker fuel oil gross mass 5.0 ± 0.2%;
D, interpolation hydrogen sulfide solution are made described testing liquid (2) when the concentration of hydrogen sulfide in overall test solution is 5.0 ± 1ppm.
3. crude oil tanker oil cargo tank coating immersion test device according to claim 1 is characterized in that: described constant water bath box (1) is connected with the senior microprocessor controller that corresponding tool LED shows.
4. crude oil tanker oil cargo tank coating immersion test device according to claim 1, is characterized in that: be mounted with six immersion test containers in described constant water bath box (1).
5. crude oil tanker oil cargo tank coating immersion test device according to claim 1, it is characterized in that: described immersion test container adopts the glass container (3) of 240 (overall diameter)/220 (interior diameter) * 450 (height) mm, and diameter is the glass top cover (4) of 250mm; Described glass container (3) inner top is arranged as the hanger that dangles (5) of diameter 215mm.
6. crude oil tanker oil cargo tank coating immersion test device according to claim 1 or 5, it is characterized in that: the described hanger that dangles (5) is made by the insulated nylon material.
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| CN201310258945.9A CN103383340B (en) | 2013-06-26 | 2013-06-26 | A kind of crude oil tanker oil cargo tank coating immersion test device |
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| CN201310258945.9A CN103383340B (en) | 2013-06-26 | 2013-06-26 | A kind of crude oil tanker oil cargo tank coating immersion test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110346233A (en) * | 2019-07-31 | 2019-10-18 | 中国人民解放军海军工程大学 | A kind of new coating flushing resistance test platform |
| CN114414277A (en) * | 2022-01-13 | 2022-04-29 | 上海发电设备成套设计研究院有限责任公司 | Immersion test system device and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110346233A (en) * | 2019-07-31 | 2019-10-18 | 中国人民解放军海军工程大学 | A kind of new coating flushing resistance test platform |
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