CN104502261A - Multifunctional corrosive gas experimental box - Google Patents
Multifunctional corrosive gas experimental box Download PDFInfo
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- CN104502261A CN104502261A CN201410810302.5A CN201410810302A CN104502261A CN 104502261 A CN104502261 A CN 104502261A CN 201410810302 A CN201410810302 A CN 201410810302A CN 104502261 A CN104502261 A CN 104502261A
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Abstract
The invention relates to a multifunctional corrosive gas experimental box. The experimental box accords with the requirement of flowing gas corrosion experiments, and can be widely applied to single or mixed corrosive gas experiments for sulfur dioxide gas and hydrogen sulfide gas. The mixed gas experimental device comprises a compressed air delivery system, a mixed gas delivery system, an experimental box main body, an air conditioning system, a control system, a residual gas filter chamber and a protection system; mixed gas with certain concentration is continuously introduced into a box body with a specific volume, a material or a product is subjected to corrosion experiments under the condition that concentration, temperature and relative humidity are constant, and the destruction degree of the material or the product can recur in a certain time range. The device can be used for checking the mixed gas corrosion resistance of the material and the protective layer thereof, comparing with process quality of similar protective layers, and checking the mixed gas corrosion resistance of certain products.
Description
Technical field
The invention belongs to chemical engineering experiment equipment, relate to a kind of Multifunctional corrosion gas experiment case.
Background technology
The impact that the mixed gas that the indoor environment that mixed gas experiment is mainly used in work of determining or storage exists corrodes by these mixed gas the impact of electric and electronic product element, system and material, particularly contact element and web member.Mixed gas experimental system can be assembled into a subsystem respectively or be assembled into a complete system, according to the information given by the test of flowing mixed gas etching system, can mutually compare on the basis of corrosion resistance, help the selection carrying out material, manufacturing process and element design.
Design and the CONSTRUCTED SPECIFICATION of flowing mixed gas etching system are selectable, but pilot system defined terms should be met and should meet following requirement in its whole work space: water droplet or suspended particle should not send into sample chamber; Air used and water should be enough clean, in order to avoid affect test effect; When test gas is by sample chamber, the consistent of test condition in work space should be guaranteed; The gas sampling point of gas analysis should in the work space of sample chamber; The gas discharged should process according to relevant articles of law; Defining of work space is: in work space, the surrosion of the single copper sheet sample of each point is maximum is no more than 15% of all copper sheet sample means surrosion.
Equipment for mixed gas experiment must meet the requirement of flowing gas corrosion test, continue to import certain density mixed gas at the box house of specified volume, when making concentration, temperature, relative humidity constant, corrosion test is carried out to material or product, the destructiveness that reproduction material or product suffer within the scope of certain hour.System can be used for the ability of the anti-mixed gas corrosion examining material and protective layer thereof, and the processing quality of similar protective layer compares, and also can be used for examining the ability of the anti-mixed gas corrosion of some product.
Summary of the invention
The invention provides a kind of Multifunctional corrosion gas experiment case, sulfur dioxide gas can be widely used in, hydrogen sulfide gas, nitrogen dioxide gas, chlorine carries out separately or the etchant gas test such as mixed gas.
Technical scheme of the present invention is as follows:
A kind of Multifunctional corrosion gas experiment case, comprises compressed air conveying system, mixed gas delivery system, experimental box main body, air-conditioning system, control system, residual gas filter chamber and protection system.
Compressed air conveying system comprises compressed-air filter, pressurized air pressure regulator, pressurized air Controlling solenoid valve, pressurized air air flowmeter; Three tunnels are divided into: a compressed air transformer in road is connected to the gas hole between double-deck door made of tempered glass from compressed-air filter pressurized air out, enter the lye tank of gas filter after the one compressed air transformer in tunnel, after the compressed air transformer in last road, enter pressurized air Controlling solenoid valve, pressurized air enters etchant gas mixing chamber and mixed gas mixing through air flowmeter.
Etchant gas induction system comprises source of the gas, etchant gas reduction valve, etchant gas metering pin valve, etchant gas mass flowmeter and etchant gas washer;
Experimental box main body is divided into gas mixer chamber and sample casing; Sample casing is made up of air-conditioning cabinet and sample chamber, and air-conditioning cabinet is connected with air-conditioning system; Have dividing plate between sample chamber and air-conditioning cabinet, dividing plate has duct, sample chamber is communicated with air-conditioning cabinet passing hole channel; Gas mixer chamber adopts double-deck door made of tempered glass, has air blowing pore and air-breathing pore between two-layer door made of tempered glass; First door made of tempered glass adopts silicone rubber seal, does not make mixed gas excessive; Between door made of tempered glass and second leakproof door made of tempered glass, there is air blowing pore below and both sides, and there is exhaust pore top; Exhaust pore is connected to the lye tank of residual gas filter chamber.Air blowing pore adopts pressurized air to blow, even if there is a little Leakage Gas, enters the lye tank of residual gas filter chamber after the gas of leakage also can be blown into air-breathing pore by pressurized air, ensures safety.
Air-conditioning system is connected with air-conditioning cabinet, and air-conditioning indoor temperature and humidity adopts external humiture air conditioning cabinet, and have refrigeration system, heating system, humidification system, the environment producing regulation humiture enters air conditioning chamber, and at air conditioning chamber's Inner eycle.Enter mixing chamber mixed gas and purification after air mixing chamber mixing after, enter air conditioning chamber, under suitable humiture environment, enter the lower floor of sample chamber, enter sample chamber by the pore between the levels of sample chamber.The warming and humidifying element that air conditioning chamber's refrigeration system adopts is titanium heating tube, corrosion-resistant, and long service life heat temperature raising is fast, and humiture is evenly distributed.The refrigeration system of system is arranged on the bottom of system, mainly plays cooling when summer uses and constant temperature and dehumidifying.
Control System Design is on the right side of casing, and be arranged separately in independently in testing laboratory, other system or instrument must not be laid in indoor.After General System places, again system and operation room are separated with glass, so both ensure that the personal safety of personnel, again can by the Test condition in the real-time Control Room of glass.It can realize following functions: can realize humiture and automatically control; There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and perform the functions such as automatic switching; Control each gas flow; Control the work of the functions such as various solenoid valves;
Residual gas filter chamber comprises alkali lye spray chamber, steam separation chamber and charcoal absorption room, can fast and effeciently by gas filtration remaining in casing after off-test, and the pH value of residual air is alkalescent, can not pollute air, easy to operate.
Airborne protection system adopts indoor air exhaust system.In operating process, personnel may slip up, and gas leakage is inner to testing laboratory, and at this moment can open indoor air-changing measure, the gas displacement of indoor leakage is gone out operating room, personnel enter in-house operation or inspection.To be on the safe side, the leakage alarm instrument of various gas can also be installed in indoor.Total system overtemperature, blower fan overheating protection, total system loss phase/anti-phase, refrigeration system is transshipped, refrigeration unit superpressure, total system timing, and other also has electric leakage, runs instruction, the protection such as auto stop after fault alarm.
Mixed gas tests system in use needs to use four kinds of corrosive gass, although the concentration needed in casing is very low, the concentration of the calibrating gas that we are equipped with is higher, is easy to cause personal injury to personnel once steel cylinder leaks.In order to guarantee personal safety, devise test battery room leakage alarm filtering system.
The separately protected system of peripheral hardware can be arranged in the working environment with experimental system, and this separately protected system divides three parts, Leak Detection alarm, filtering system and centrifugal anticorrosion ventilation blower fan.
Leak Detection alarm adopts import electrochemical gas inductive probe, connects audible-visual annunciator, once detect in room have the concentration of this kind of gas to reach setting value, i.e. sound and light alarm, and trigger filter system simultaneously.Filtering system is divided into three-stage filtration, and the first order is in alkali lye and filter chamber, and the second level is steam separation chamber, and the third level is charcoal absorption room.Before the test the alkali lye being configured to regulation pH value (generally between 9-10) is added in alkali lye and filter chamber, can steam be separated steel wire lump put into steam separation chamber, finally activated charcoal is put into charcoal absorption room.Filtering system is once after being triggered, a set of alkali lye atomization system of in alkali lye and inside, filter chamber is opened automatically, alkali lye is atomized and is full of whole filter chamber, the centrifugal anticorrosion ventilation blower fan simultaneously opened blows outward from internal system air draught, just negative pressure is defined to whole filtering system, the gas in room is caused to be made a forcible entry in alkali lye and filter chamber, again by enter steam separation chamber with filter chamber and to be become by most condensation vapor water droplet to fall into the gatherer of bottom again, get back in alkali lye and filter chamber, finally to enter after charcoal absorption room is tightly held by activated carbon again outside discharge chamber.In alkali lye and the alkali lye atomization system of inside, filter chamber utilize siphon principle, use pressurized air, adopt glass material disposal molding, corrosion resistant and valve place is not easy to wear.
The present invention is a kind of Multifunctional corrosion gas experiment case, be applicable to butt contact and web member carries out accelerated corrosion test, with evaluation because the air polluted by combustion of sulfur product is to the corrosive attack of butt contact and web member, meet gas routine tests or the bulk testing such as sulphuric dioxide, sulfuretted hydrogen, nitrogen dioxide, chlorine corrosion that specify in standard.
Accompanying drawing explanation
Fig. 1 is the experiment process schematic diagram of native system.
Fig. 2 is mixed gas corrosion test chamber front view (FV).
In figure: 1-1 tri-overlaps compression air transformer; 1-2 compressed-air filter; 1-3 sulfur dioxide gas; 1-4 nitrogen dioxide gas; 1-5 hydrogen sulfide gas; 1-6 chlorine gas; 1-7 sulfur dioxide gas reduction valve; 1-8 nitrogen dioxide gas reduction valve; 1-9 hydrogen sulfide gas reduction valve; 1-10 chlorine gas pressure reducer; 1-11 tetra-overlaps etchant gas and retains needle-valve; 1-12 tetra-overlaps etchant gas mass flowmeter; 1-13 tetra-overlaps etchant gas washer; 1-14 solenoid valve; 1-15 air flow meter; 1-16 pressurized air enters in the middle of twice glass door; 1-17 pressurized air enters casing gas filter; 1-18 pressurized air enters etchant gas mixing chamber; 1-19 etchant gas mixing chamber; 1-20 lye tank; 1-21 steam separation chamber; 1-22 activated carbon chamber; Outside 1-23 exhaust removal chamber; 1-24 temperature and humidity regulation room; 1-25 humidifier; 1-26 gas buffer plate; 1-27 sample chamber; Glass door in 1-28; The outer glass door of 1-29; 1-30 circulation wind wheel; 1-31 well heater; 1-32 refrigerating evaporator; 1-33 mixed gas enters sample chamber; 1-34 circulating fan; 2-1 glass door sealing strip; 2-2 glass door installation connecting element; 2-3 glass door lock; 2-4 plant bottom case; 2-5 running fix castor; 2-6 control operation instrument and switch; 2-7 puzzle safety lock;
Embodiment
Embodiments of the invention are described in detail below in conjunction with technical scheme and accompanying drawing.
The shell liner material of experimental system of the present invention is corrosion resistant type PVC plastic sheet material, does not react, do not absorb several mixed gas, do not affect test findings with gases to be measured such as sulfur dioxide gas, hydrogen sulfide gas nitrogen dioxide gas, chlorine gases.Internal and external pressure balance during system works, mixed gas at the uniform velocity flows in casing.The case top of system adopts 120 degree of best drift angles, and inwall and other position have the generation system of condensate water in process of the test, and condensate water can not drop onto on sample affects test findings.
The chamber door material of super large is tempered glass, corrosion-resistant silicone rubber seal, and corrosion-resistant equally, easy cleaning, nothing are revealed.Clearly can observe indoor Test condition from outside and do not affect test findings in process of the test.Chamber door and casing adopt the potent sealing of corrosion resistant silicon rubber, prevent gas excessive, thus affect other system in test findings and corroding chamber, the injury that even may cause test operation personnel.
Various auxiliary accessories facility is similarly corrosion resistant type, reasonable in design.The chamber door material of super large is double-deck tempered glass, corrosion-resistant silicone rubber seal, and corrosion-resistant equally, easy cleaning, nothing are revealed.Clearly can observe indoor Test condition from outside and do not affect test findings in process of the test.
Casing heating adopts titanium well heater, and corrosion-resistant quick heating, humiture is evenly distributed.
Specimen holder, by national standard design, also can adopt hook mode.Various gas is first configured to required concentration as requested, respectively from steel cylinder out afterwards through decompression, control to enter mixing casing by flowmeter through corrosion-proof solenoid valve again, enter the shunt conduit of bottom half afterwards together with the humiture air in air-conditioning cabinet, pass in casing equably.
The refrigeration system of system is arranged in the air-conditioning cabinet of system, the effect of main landing gentleness dehumidifying.
Control System Design is on the right side of casing, simple to operate.Ad hoc etchant gas filtering system can fast and effeciently by gas filtration remaining in casing after off-test, and residual air can not pollute air, easy to operate.
As shown in drawings, in figure: three cover compression air transformer 1-1, compressed-air filter 1-2, sulfur dioxide gas 1-3, nitrogen dioxide gas 1-4, hydrogen sulfide gas 1-5, chlorine gas 1-6, sulfur dioxide gas reduction valve 1-7, nitrogen dioxide gas reduction valve 1-8, hydrogen sulfide gas reduction valve 1-9, chlorine gas pressure reducer 1-10, four cover etchant gases retain needle-valve 1-11, four cover etchant gas mass flowmeter 1-12, four cover etchant gas washer 1-13, solenoid valve 1-14 and air flow meter 1-15, each several part connects and composes mixed gas delivery system successively.
Pressurized air enters 1-16 in the middle of twice glass door respectively, enters casing gas filter 1-17, enters etchant gas mixing chamber 1-18, and etchant gas mixes at mixing chamber 1-19.
Residual gas enters steam separation chamber 1-21 again after entering lye tank 1-20, finally enter activated carbon chamber 1-22, the outer 1-23 of last exhaust removal chamber.
Temperature and humidity regulation room 1-24 and 1-25 humidifier carry out temperature regulation and control humiture; Circulation wind wheel 1-30 and circulating fan 1-34 provides recirculating air, ensures continual air supplying.
Well heater 1-31 is as firing equipment, and refrigerating evaporator 1-32 is as refrigeration plant.
Gas buffer plate 1-26 is as gas buffer, and interior glass door 1-28 and outer glass door 1-29 forms double-layer glass door.
Experiment four kinds of mixed gas concentrations of the embodiment of the present invention and correlation values: sulfur dioxide concentration (200-500) × 10
-9v0L VOL; Concentration of hydrogen sulfide: (10-100) × 10
-9v0L VOL; Content of nitrogen dioxide: 200 × 10
-9v0L VOL; Chlorine gas concentration: (10-20) × 10
-9v0L VOL; Adopt steel cylinder method, gas concentration measurement is by the mode of formulae discovery volume ratio, and recycling mass flowmeter measures.
The control system of the embodiment of the present invention adopts TEMI series humiture and each gas-flow rate controller table, giant-screen-liquid crystal display programmable microcomputer PID control SSR exports operation, full import super large lcd touch screen picture, screen is simple to operate, and formula editor is easy; Precision: 0.1 DEG C (indication range); Resolution: ± 0.1 DEG C; Temperature sensing sensor: PT100 platinum resistance temperature detector; Control mode: thermal equilibrium conditioning mode, all electrical equipment all adopts (Schneider) series of products; Temperature and Humidity Control adopts P.I.D+S.S.R system same frequency road cooperation control; There is the function of auto computing, humiture change condition can be revised immediately, make Temperature and Humidity Control more precise and stable; Controller operation interface establishes Chinese and English available, real-time motion curve map can have by screen display the capacity that 100 groups of formulas often organize 100 sections, every section 999 steps capable of circulation, every section of time setting maximal value is after 99 hours 59 points of data and test condition input, controller has fluorescent screen lock function, avoids artificial touch and shuts down; There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and perform the functions such as automatic switching; Controller has the automatic screensaver functions in fluorescent screen, better protects liquid crystal display (make its life-span more permanent) under long-play state.The digital display preserving gas mass flowmeter of the various gas of indoor outfit, Automated condtrol; Be equipped with each gas pressure reducer; Import solenoid valve and air oil-water separator; Various anti-corrosion electromagnetic valve; Perform components and parts: Schneider A.C. contactor, miniature relay, solid-state relay.
Refrigeration and dehumidification system structure as follows: compressor: the safe health 1 of totally-enclosed France is overlapped, and can keep temperature 25 degree, humidity 75% when summer is worked; Refrigeration modes: air-cooled; Cold-producing medium: R404A; Total system pipeline is all made ventilation pressurization 48H and to be stopped leakage in the roof test;
Heat, cooling system is completely independent; Inner-spiral type refrigerant copper pipe; Slope-based evaporator; Device for drying and filtering, cold medium flux form, repairing valve, oil separator, solenoid valve, surge drum all adopt import original part.
Gas from steel cylinder out afterwards through decompression after again through needle-valve to mass flowmeter, enter etchant gas washer, etchant gas mixing chamber is entered after the saxol cleaning of etchant gas washer, enter the shunt conduit of the bottom half of sample chamber again, equably from the duct between the levels of sample chamber through entering sample chamber, circulate together with the humiture air in air-conditioning cabinet, enter lye tank, steam separation chamber, activated carbon chamber afterwards again, finally go out to outdoor.
Mixed gas completes after test mission through sample, namely residual gas filtrator is entered from the upper pipe of sample chamber, in filtrator, the gas filter system (activated carbon chamber) of alkali lye spray chamber and adsorption combined can fast and effeciently by gas filtration remaining in casing after off-test, the pH value of residual air is alkalescent, can not pollute air, easy to operate.After condensate water a small amount of in casing is collected, can focus on.
Specimen holder structural design in sample chamber, by national standard, also can adopt hook mode, and supporting power is large, and test product is placed easily.
System can do the mixed gas tests of sulphuric dioxide, sulfuretted hydrogen, nitrogen dioxide, chlorine four kinds of gases, also can do the pure gas corrosion test of wherein a certain gas.
Casing adopts import PVC plastic flitch to cool aftershaping again through hot mastication, piece between plate with plate becomes 90 degree of right angles after plane milling, adopt the method that high temperature welding gun molten plastic welding wire is filled up again, more firm through cooled weld seam, the piece of whole casing round and smooth smooth, body structure is compact, outward appearance is glossy.
Claims (3)
1. a Multifunctional corrosion gas experiment case, comprises compressed air delivery part, mixed gas delivery part, experimental box main body, air-conditioning system, control system, residual gas filter chamber and airborne protection system; It is characterized in that:
Compressed air delivery part comprises compressed-air filter, pressurized air pressure regulator, pressurized air control reduction valve, pressurized air air flowmeter; Three tunnels are divided into: a compressed air transformer in road is connected to the gas hole between double-deck door made of tempered glass from compressed-air filter pressurized air out, enter the lye tank of gas filter after the one compressed air transformer in tunnel, after the compressed air transformer in last road, enter pressurized air Controlling solenoid valve, pressurized air air flowmeter enters etchant gas mixing chamber and mixed gas mixing;
Mixed gas delivery part comprises source of the gas, etchant gas reduction valve, etchant gas metering pin valve, etchant gas mass flowmeter and etchant gas washer;
Experimental box main body is divided into gas mixer chamber and sample casing; Sample casing is made up of air-conditioning cabinet and sample chamber, and air-conditioning cabinet is connected with air-conditioning system; Have dividing plate between sample chamber and air-conditioning cabinet, dividing plate has duct, sample chamber is communicated with air-conditioning cabinet passing hole channel;
Air-conditioning system is connected with air-conditioning cabinet, and air-conditioning indoor temperature and humidity adopts external humiture air conditioning cabinet, has refrigeration system, heating system, humidification system, produces regulation humiture environment and enter air conditioning chamber, and at air conditioning chamber's Inner eycle; Enter mixing chamber mixed gas and purification after air mixing chamber mixing after, enter air conditioning chamber, under suitable humiture environment, enter the lower floor of sample chamber, enter sample chamber by the pore between the levels of sample chamber;
Control System Design is on the right side of casing, and be arranged separately in independently in testing laboratory, other system or instrument must not be laid in indoor; It can realize following functions: can realize humiture and automatically control; There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and perform the functions such as automatic switching; Control each gas flow, control the work of the functions such as various solenoid valves;
Residual gas filter chamber comprises lye tank, steam separation chamber and charcoal absorption room, can fast and effeciently by gas filtration remaining in casing after off-test, and the pH value of residual air is alkalescent, can not pollute air, easy to operate;
Airborne protection system adopts the leakage alarm instrument of indoor air exhaust system and various gas; Total system overtemperature, blower fan overheating protection, total system loss phase/anti-phase, refrigeration system is transshipped, refrigeration unit superpressure, total system timing, and other also has electric leakage, runs instruction, the protection such as auto stop after fault alarm.
2. mixed gas tests system according to claim 1, is characterized in that, gas mixer chamber adopts double-deck door made of tempered glass, has air blowing pore and air-breathing pore between two-layer door made of tempered glass; First door made of tempered glass adopts silicone rubber seal, does not make mixed gas excessive; Between door made of tempered glass and second leakproof door made of tempered glass, there is air blowing pore below and both sides, and there is exhaust pore top; Exhaust pore is connected to the lye tank of residual gas filter chamber; Air blowing pore adopts pressurized air to blow, even if there is a little Leakage Gas, enters the lye tank of residual gas filter chamber after the gas of leakage also can be blown into air-breathing pore by pressurized air, ensures safety.
3. a kind of Multifunctional corrosion gas experiment case according to claim 1 and 2, it is characterized in that, the shell liner material of casing is corrosion resistant type PVC plastic sheet material, do not react with gases to be measured such as sulfur dioxide gas, hydrogen sulfide gas, nitrogen dioxide gas, chlorine gases, do not absorb several mixed gas, do not affect test findings; The case top of system adopts 120 degree of best drift angles, and inwall and other position have the generation system of condensate water in process of the test, and condensate water can not drop onto on sample affects test findings; Chamber door material is tempered glass, corrosion-resistant silicone rubber seal; Casing heating adopts titanium well heater, quick heating, and humiture is evenly distributed; Specimen holder adopts hook mode.
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