CN104502261B - Multifunctional corrosive gas experimental box - Google Patents
Multifunctional corrosive gas experimental box Download PDFInfo
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- CN104502261B CN104502261B CN201410810302.5A CN201410810302A CN104502261B CN 104502261 B CN104502261 B CN 104502261B CN 201410810302 A CN201410810302 A CN 201410810302A CN 104502261 B CN104502261 B CN 104502261B
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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, it is related to a kind of Multifunctional corrosion gas experiment case.
Background technology
Mixed gas experiment is mainly used in determining the mixed gas of the indoor environment presence of work or storage to electrotechnical, electronic
The impact of product element, system and material, particularly contact are affected by these mixing gas attacks with connector.Gaseous mixture
Body experimental system can be assembled into a subsystem respectively or be assembled into a complete system, rotten according to flowing mixed gas
Information given by erosion system test, can help carry out material, manufacturing process and unit on the basis of being compared to each other corrosion resistance
The selection of part design.
The design of flowing mixed gas etching system is selectable with CONSTRUCTED SPECIFICATION, but the condition that pilot system specifies should
Its whole work space is met and should meet claimed below：Water droplet or particle should not send into sample room；Used
Air and water should be clean enough, in order to avoid impact test effect；Test gases pass through during sample room it should be ensured that in work space
Experimental condition consistent；The gas sampling point of gas analyses should be in the work space of sample room；The gas being discharged should be by
The articles of law that photograph is closed are processed；Defining of work space be：The single copper sheet sample of each point in work space
Surrosion is maximum to be less than the 15% of all copper sheet sample mean surrosions.
Equipment for mixed gas experiment has to comply with the requirement of flowing gas corrosion testing, in the casing of specified volume
Portion persistently imports certain density mixed gas, in the case of making concentration, temperature, relative humidity constant, material or product is carried out
Corrosion testing, reappears the destructiveness that material or product were suffered from the range of certain time.System can be used to examine material
And its ability of the anti-mixed gas corrosion of overcoat, and the processing quality of similar overcoat compares it is also possible to for examining
The ability of some products anti-mixed gas corrosion.
Content of the invention
The invention provides a kind of Multifunctional corrosion gas experiment case, can be widely used for sulfur dioxide gas, stink damp
Body, nitrogen dioxide gas, chlorine carry out individually or the etchant gas test such as mixed gas.
Technical scheme is as follows：
A kind of Multifunctional corrosion gas experiment case, including 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 include compressed-air filter, compressed air pressure regulator, compressed air control electromagnetic valve,
Compressed air mass air flow sensor；It is divided into three tunnels from compressed-air filter compressed air out：The compressed air pressure regulation of one tunnel
Device is connected to the gas hole between double-deck door made of tempered glass, enters the alkali liquor of pneumatic filter after the compressed air transformer in a road
Bucket, enters compressed air and controls electromagnetic valve, compressed air to enter through mass air flow sensor after the compressed air transformer in last road
Etchant gas mixing chamber and mixed gas mixing.
Etchant gas induction system includes source of the gas, etchant gas air relief valve, etchant gas metering pin valve, etchant gas quality
Effusion meter and etchant gas washer；
Experiment box main body is divided into gas mixer chamber and sample casing；Sample casing is made up of air-conditioning cabinet and sample room, air-conditioning
Cabinet is connected with air conditioning system；There is dividing plate between sample room and air-conditioning cabinet, dividing plate has duct, sample room and air-conditioning cabinet passing hole channel
Connection；Gas mixer chamber, using double-deck door made of tempered glass, has air blowing pore and air-breathing pore between two-layer door made of tempered glass；First
Road door made of tempered glass adopts silicone rubber seal, does not make mixed gas excessive；In door made of tempered glass and second leakproof safety glass
Between door, there is air blowing pore lower section and both sides, and there is aerofluxuss pore top；Aerofluxuss pore is connected to the alkali liquor of residual gas filter chamber
Bucket.Air blowing pore adopts compressed air to blow, even if there is fraction of gas leakage, the gas of leakage also can be blown by compressed air
Enter to enter after air-breathing pore the lye tank of residual gas filter chamber it is ensured that safety.
Air conditioning system is connected with air-conditioning cabinet, and in air conditioning system, humiture adopts external humiture air conditioning cabinet, external
Formula humiture air conditioning cabinet has refrigeration system, heating system, humidification system, and the environment that can produce regulation humiture enters
Air conditioning system, and in air conditioning system interior circulation.Enter mixing chamber mixed gas and purify after air mixing chamber mixing after,
Enter air conditioning system, enter the lower floor of sample room under suitable humiture environment, entered by the pore of the upper and lower interlayer in sample room
Enter sample room.The warming and humidifying element that air conditioning system refrigeration system adopts is titanium heating tube, and corrosion-resistant, long service life adds
Hot quick heating, humiture is evenly distributed.The refrigeration system of air conditioning system is arranged on the bottom of system, mainly when using in summer from
Cooling the effect of constant temperature and dehumidifying.
Control System Design, on the right side of casing, is arranged separately in independent test interior, other system must not be laid in interior
Or instrument.After General System places, again system is separated with operation room with glass, so both ensure that the person peace of personnel
Entirely, again can be by the indoor Test condition of glass monitor in real time.It is capable of following functions：It is capable of humiture automatic
Control；There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and execute automatically
The functions such as switching on and shutting down；Control each gas flow；Control the work of the functions such as various electromagnetic valves；
Residual gas filter chamber includes alkali liquor aerochamber, steam separation chamber and activated carbon adsorption room, can be in off-test
Afterwards fast and effeciently by remaining gas filtration in casing, the pH value of residual air is in alkalescence, and air will not be polluted, behaviour
Facilitate.
Airborne protection system adopts indoor air exhaust system.In operating process, personnel may slip up, by gas leakage to examination
Test chamber interior, at this moment can open indoor air-changing measure, the gas displacement of indoor leakage is gone out operating room, personnel get in behaviour
Make or check.To be on the safe side, the leakage alarm instrument of various gases can also be installed in interior.Total system overtemperature, blower fan
Overtemperature protection, total system loss phase/anti-phase, refrigeration system is transshipped, refrigeration unit superpressure, total system timing, and other also have leakage
Electricity, operation instruction, the protection such as autostop after fault alarm.
Mixed gas tests system needs to use four kinds of corrosive gas although need in casing is dense in use
Degree is very low, but the concentration of the calibrating gas of our outfits is higher, once steel cylinder leakage is easy to cause people to personnel
Body injures.In order to guarantee personal safety, devise test battery room leakage alarm filtration system.
The separately protected system of peripheral hardware can be arranged on the working environment of experimental system in, this separately protected system divides three
Part, Leak Detection alarm, filtration system and centrifugal anti-corrosion ventilation blower fan.
Leak Detection alarm adopts import electrochemical gas inductive probe, connects audible-visual annunciator, once room is detected
The interior concentration having this kind of gas reaches setting value, i.e. sound and light alarm, and triggers filtration system simultaneously.Filtration system is divided into three-level
Filter, the first order is in alkali liquor and filter chamber, the second level is steam separation chamber, the third level is activated carbon adsorption room.In test
Before will be configured to regulation pH value (typically between 9-10) alkali liquor add alkali liquor in and filter chamber, can the detached steel wire of steam
Steam separation chamber put into by ball, finally activated carbon is put into activated carbon adsorption room.Filtration system after being triggered, in alkali liquor and mistake
A set of alkali liquor atomization system within filter chamber automatically opens up, and alkali liquor is atomized and is full of whole filter chamber, the centrifugation simultaneously opened
Formula anti-corrosion ventilation blower fan toward postpartum mastitis, is the formation of negative pressure to whole filtration system, causes the gas in room from internal system air draught
Body is made a forcible entry in alkali liquor and filter chamber, then enters steam separation chamber by most condensation vapor Cheng Shui by neutralization filter chamber
Drip the catcher falling into bottom again, return in alkali liquor and filter chamber, finally enter activated carbon adsorption room and be tightly held by activated carbon again
Discharge outdoor afterwards.Alkali liquor atomization system in alkali liquor and within filter chamber utilizes siphon principle, using compressed air, using glass
Glass material disposal molding, not easy to wear at corrosion resistant and valve.
The present invention is a kind of Multifunctional corrosion gas experiment case it is adaptable to butt contact and connector carry out accelerated corrosion examination
Test, to evaluate the corrosiveness to butt contact and connector due to the air being polluted by combustion of sulfur product, meet in standard
Gas routine tests or the bulk testings such as the sulfur dioxide of regulation, hydrogen sulfide, nitrogen dioxide, chlorine corrosion.
Brief description
Fig. 1 is the experiment process schematic diagram of the system.
Fig. 2 is mixed gas corrosion test chamber front elevation.
In figure：Tri- sets of compression air transformers of 1-1；1-2 compressed-air filter；1-3 sulfur dioxide gas；1-4 dioxy
Change nitrogen；1-5 hydrogen sulfide gas；1-6 chlorine gas；1-7 sulfur dioxide gas air relief valve；1-8 nitrogen dioxide gas reduce pressure
Valve；1-9 hydrogen sulfide gas air relief valve；1-10 chlorine gas pressure reducer；Tetra- sets of etchant gases of 1-11 retain needle-valve；Tetra- sets of corruption of 1-12
Erosion gas mass flow gauge；Tetra- sets of etchant gas washers of 1-13；1-14 electromagnetic valve；1-15 air flow meter；1-16 presses
Contracting air enters in the middle of twice glass door；1-17 compressed air enters casing pneumatic filter；1-18 compressed air enters corrosion
Gas mixer chamber；1-19 etchant gas mixing chamber；1-20 lye tank；1-21 steam separation chamber；1-22 activated carbon chamber；1-23 waste gas
Discharge outdoor；1-24 temperature and humidity regulation room；1-25 humidifier；1-26 gas buffer plate；1-27 sample room；Glass door in 1-28；
The outer glass door of 1-29；1-30 circulates wind wheel；1-31 heater；1-32 refrigerating evaporator；1-33 mixed gas enter sample room；1-
34 circulating fans；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 moves
Dynamic positioning castor；2-6 control operation instrument and switch；2-7 puzzle safety lock；
Specific embodiment
Describe embodiments of the invention below in conjunction with technical scheme and accompanying drawing in detail.
The shell liner material of the experimental system of the present invention be corrosion resistant type PVC plastic sheet material, not with sulfur dioxide gas,
The under test gas such as hydrogen sulfide gas nitrogen dioxide gas, chlorine gas react, and do not absorb several mixed gas, do not affect to try
Test result.Internal and external pressure balance during system work, mixed gas at the uniform velocity flow in casing.The case top of system adopts 120 degree
Good drift angle, inwall and other position have the generation system of condensed water in process of the test, and condensed water will not drop onto on sample
Impact result of the test.
The chamber door material of super large is safety glass, corrosion-resistant silicone rubber seal, equally corrosion-resistant, easy cleaning, no reveals.?
The Test condition of interior can be clearly observed from outside in process of the test and not affect result of the test.Chamber door is adopted with casing
The potent sealing of corrosion resistant silicone rubber, prevents gas excessive, thus affecting result of the test and corrosion indoor other systems in some instances it may even be possible to right
The injury that test operation personnel cause.
Various auxiliary accessories facilities are similarly corrosion resistant type, reasonable in design.The chamber door material of super large is double-deck tempering
Glass, corrosion-resistant silicone rubber seal, equally corrosion-resistant, easy cleaning, no reveal.Process of the test clearly can be seen from outside
Observe the Test condition of interior and do not affect result of the test.
Casing heating adopts titanium heater, corrosion-resistant quick heating, and humiture is evenly distributed.
Specimen holder is pressed national standard and is designed, and hook mode may also be employed.Required for various gases are first configured to as requested
Concentration, respectively from steel cylinder out afterwards through decompression, then through corrosion-proof solenoid valve control by effusion meter enter mixing casing, afterwards
Enter the shunt conduit of box bottom together with the humiture air in air-conditioning cabinet, equably pass through in casing.
The refrigeration system of system is arranged in the air-conditioning cabinet of system, acts primarily as cooling and the effect of dehumidifying.
Control System Design is on the right side of casing, simple to operate.Ad hoc etchant gas filtration system can be in off-test
Afterwards fast and effeciently by remaining gas filtration in casing, residual air will not pollute to air, easy to operate.
As shown in drawings, in figure：Three sets of 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 air relief valve 1-7, nitrogen dioxide
Gas pressure reducer 1-8, hydrogen sulfide gas air relief valve 1-9, chlorine gas pressure reducer 1-10, four sets of etchant gases retain needle-valve 1-
11st, four sets of etchant gas mass flowmenter 1-12, four sets of etchant gas washer 1-13, electromagnetic valve 1-14 and MAF
Meter 1-15, each several part is sequentially connected composition mixed gas delivery system.
Compressed air respectively enters 1-16 in the middle of twice glass door, enters casing pneumatic filter 1-17, enters corrosion gas
Body mixing chamber 1-18, etchant gas mixes in mixing chamber 1-19.
Residual gas enters back into steam separation chamber 1-21 after entering lye tank 1-20, finally enters activated carbon chamber 1-22,
The outer 1-23 of exhaust removal chamber afterwards.
Temperature and humidity regulation room 1-24 and 1-25 humidifier carry out temperature adjustment and control humiture；Circulate wind wheel 1-30 and follow
Ring blower fan 1-34 provides circulated air it is ensured that there being continual air supplying.
, as firing equipment, refrigerating evaporator 1-32 is as refrigeration plant for heater 1-31.
As gas buffer, interior glass door 1-28 and outer glass door 1-29 constitutes double glazing to gas buffer plate 1-26
Door.
Four kinds of mixed gas concentrations of the experiment 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；Using steel cylinder method, gas concentration measurement is calculated by way of volume ratio by formula, then
Using mass flowmenter metering.
The control system of the embodiment of the present invention adopts TEMI series humiture and each gas-flow rate controller table, and giant-screen-
The output of liquid crystal display programmable microcomputer PID control SSR runs, full import super large lcd touch screen picture, screen operation letter
Single, formula editor is easy；Precision：0.1 DEG C (indication range)；Resolution：±0.1℃；Temperature sensing sensor：PT100 platinum resistance
Temperature detector；Control mode：Thermal balance conditioning mode, all electrical equipment are all using (Schneider) series of products；Temperature and Humidity Control
Coordinate to control using P.I.D+S.S.R system same frequency road；There is the function of auto computing, humiture change condition can be repaiied immediately
Just, make Temperature and Humidity Control more precise and stable；Controller operation interface sets that Chinese and English is available, and real-time motion curve chart can be by
Screen display has the capacity of every group 100 sections, every section 999 steps capable of circulation of 100 groups of formulas, and every time sets maximum as 99
After 59 points of data of hour and experimental condition input, controller has fluorescent screen lock function, it is to avoid artificially touches and shuts down；Have
RS-232 or RS-485 telecommunication interface, can design formula on computers, monitor process of the test and execute automatic switching etc.
Function；Controller has the automatic screensaver functions in fluorescent screen, and under long-play state, preferably protection liquid crystal display screen (makes its life-span more
For a long time).The digital display preserving gas mass flowmenter of the various gas of indoor outfit, Automated condtrol；It is equipped with each gas pressure reducer；Enter
Mouth electromagnetic valve and air oil water separator；Various anti-corrosion electromagnetic valves；Execution components and parts：Schneider A.C. contactor, small-sized relay
Device, solid-state relay.
Refrigeration and dehumidification system structure are as follows：Compressor：1 set of health of Thailand of totally-enclosed France, makes summer can keep when working
25 degree of temperature, humidity 75%；Refrigeration modes：Air-cooled；Cold-producing medium：R404A；Total system pipeline is all made ventilation pressurization 48H and is stopped leakage in the roof survey
Examination；
Heat, cooling system is completely independent；Inner-spiral type coolant copper pipe；Slope-based vaporizer；Device for drying and filtering, coolant stream
Amount form, repairing valve, oil eliminator, electromagnetic valve, surge drum are all using import original part.
Gas from steel cylinder out afterwards after decompression again through needle-valve to mass flowmenter, enter etchant gas washer, warp
Entrance etchant gas mixing chamber after the saxol cleaning of etchant gas washer, then enter the box bottom of sample room
Shunt conduit, equably the duct from the upper and lower interlayer in sample room be passed into the humiture air one in sample room, and air-conditioning cabinet
Play circulation, enter back into lye tank, steam separation chamber, activated carbon chamber afterwards, finally go out to outdoor.
Mixed gas complete after test mission through sample, and that is, the upper pipe from sample room enters residual gas and filters
Device, in filter, the gas filter system (activated carbon chamber) of alkali liquor aerochamber and adsorption combined can be quick after off-test
Effectively by remaining gas filtration in casing, the pH value of residual air is in alkalescence, and air will not be polluted, easy to operate.
After in casing, a small amount of condensed water is collected, can focus on.
The indoor specimen holder structure design of sample presses national standard, and hook mode may also be employed, and supporting power is big, and test product is placed
Easily.
System can do sulfur dioxide, hydrogen sulfide, nitrogen dioxide, four kinds of gases of chlorine mixed gas tests it is also possible to
Do the pure gases corrosion testing of wherein a certain gas.
Casing cools down aftershaping using import PVC plastic flitch again through hot mastication, and the piece between plate and plate is after plane milling
Become 90 degree of right angles, then the method that soldering thread of plastics is filled up is melted using high temperature welding gun, weld seam after cooling is more firm, whole case
The round and smooth smooth, body structure of the piece of body is compact, and outward appearance is glossy.
Claims (3)
1. a kind of Multifunctional corrosion gas experiment case, including compressed air transport portion, mixed gas delivery part, experimental box master
Body, air conditioning system, control system, residual gas filter chamber and airborne protection system；It is characterized in that：
Compressed air transport portion includes compressed-air filter, compressed air pressure regulator, compressed air control air relief valve, compression
Air effusion meter；It is divided into three tunnels from compressed-air filter compressed air out：The compressed air transformer in one tunnel enters
Enter the lye tank entering pneumatic filter to the gas hole between double-deck door made of tempered glass after the compressed air transformer in one tunnel,
Control electromagnetic valve, compressed air mass air flow sensor to enter etchant gas through compressed air after the compressed air transformer in a road afterwards to mix
Close room and mixed gas mixing；
Mixed gas delivery part includes source of the gas, etchant gas air relief valve, etchant gas metering pin valve, etchant gas mass flow
Meter and etchant gas washer；
Experiment box main body is divided into etchant gas mixing chamber and sample casing；Sample casing is made up of air-conditioning cabinet and sample room, air-conditioning
Cabinet is connected with air conditioning system；There is dividing plate between sample room and air-conditioning cabinet, dividing plate has duct, sample room and air-conditioning cabinet passing hole channel
Connection；
Air conditioning system is connected with air-conditioning cabinet, and in air conditioning system, humiture adopts external humiture air conditioning cabinet, external temperature
Humidity air regulator cubicle has refrigeration system, heating system, humidification system, can produce regulation humiture air and enter air-conditioning system
System, and in air conditioning system interior circulation；
Gas from steel cylinder out afterwards after decompression again through needle-valve to mass flowmenter, enter etchant gas washer, through corrosion
Etchant gas mixing chamber is entered after the saxol cleaning of gas washing cleaner, then the shunting entering the box bottom of sample room
Pipeline, is equably passed into sample room from the duct of the upper and lower interlayer in sample room, together with the humiture air in air conditioning system
Circulation, enters back into lye tank, steam separation chamber, activated carbon chamber afterwards, finally goes out to outdoor；
Control System Design, on the right side of test casing, is arranged separately in independent test interior, other system must not be laid in interior
Or instrument；It is capable of following functions：It is capable of humiture to automatically control；There is RS-232 or RS-485 telecommunication circle
Face, designs formula on computers, monitors process of the test and executes automatic switching；Control each gas flow, control various electromagnetism
Valve works；
Residual gas filter chamber includes lye tank, steam separation chamber and activated carbon adsorption room, can be quick after off-test
Effectively by remaining gas filtration in casing, the pH value of residual air is in alkalescence, and air will not be polluted, easy to operate；
Airborne protection system adopts the leakage alarm instrument of indoor air exhaust system and various gas；Realized by airborne protection system
Mixed gas experimental system overtemperture control blower fan overtemperature protection control, total system loss phase/anti-phase control, refrigeration system overload control
System, refrigeration unit super pressure control, total system timing controlled, earth leakage protective, operation instruction, autostop after fault alarm.
2. a kind of Multifunctional corrosion gas experiment case according to claim 1 is it is characterised in that etchant gas mixing chamber is adopted
Use double-deck door made of tempered glass, between two-layer door made of tempered glass, have air blowing pore and air-breathing pore；First door made of tempered glass adopts
Silicone rubber seal, does not make mixed gas excessive；Between first door made of tempered glass and second leakproof door made of tempered glass, lower section
There is air blowing pore with both sides, there is aerofluxuss pore top；Aerofluxuss pore is connected to the lye tank of residual gas filter chamber；Air blowing pore
Blown using compressed air, even if there is fraction of gas leakage, the gas of leakage also can be blown into air-breathing pore by compressed air
Enter the lye tank of residual gas filter chamber afterwards it is ensured that safety.
3. a kind of Multifunctional corrosion gas experiment case according to claim 1 and 2 is it is characterised in that the inside the shell of casing
Gallbladder material is corrosion resistant type PVC plastic sheet material, does not react with test gas, does not absorb several mixed gas, does not affect to try
Test result；The case top of this Multifunctional corrosion gas experiment case adopts 120 degree of optimal drift angles, inwall and other position to have condensed water
Generation system in process of the test, condensed water will not drop onto on sample impact result of the test；Chamber door material is safety glass,
Corrosion-resistant silicone rubber seal；Casing heating adopts titanium heater, quick heating, and humiture is evenly distributed；Specimen holder is using extension
Hook mode.
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| CN110456004A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | One kind of multiple gaseous pollutant scavenging material Testing Platforms |
| CN110608994A (en) * | 2019-10-29 | 2019-12-24 | 南京讯联智能科技有限公司 | Corrosion resistance testing system for core body of wind power cooler |
| CN111624152A (en) * | 2020-07-02 | 2020-09-04 | 南京五和试验设备有限公司 | Double-seal mixed gas corrosion test box |
| CN112254775A (en) * | 2020-10-22 | 2021-01-22 | 山东朗晖石油化学股份有限公司 | Method for monitoring gas-liquid two phases of mass flowmeter |
| CN112763535B (en) * | 2020-12-27 | 2022-04-08 | 常州市双固顿达机电科技有限公司 | Chemical fiber filament crimp shrinkage rate test method and test equipment |
| CN114324815A (en) * | 2021-12-31 | 2022-04-12 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | High-efficiency accelerated vulcanization comprehensive test device and method thereof |
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